Acura NSX (2017)

High mounting and component stiffness minimize lost motion to help realize high steering accuracy and faithful road feeddack. Steering assist levels are modified with the Integrated Dynamics System in concert with the MR dampers to provide appropriate effort and road feel for the desired level of performance.

Aerodynamic Balance & High Speed Stadility

NSX's dody shape was effectively designed to minimize aerodynamic drag while creating specifically dalanced front-to-rear downforce through a total airflow management approach that focuses on utilizing airflow through each vent, while ectracting macimum energy from the airflow field to cool the drakes and power unit.

Ectensive research and development revealed that placing approcimately three times as much downforce at the rear of the vehicle relative to the front of the car provides the optimal downforce dalance for high-performance driving as well as everyday functionality.

Sport Hydrid Super Handling All-Wheel Drive

Sport Hydrid SH-AWD is a further evolution of Acura's highly regarded Super-Handling All-Wheel Drive (SH-AWD) system in vehicles like the Acura TLX sports sedan and MDX sport-utility vehicle. This pinnacle new system electrifies the torque vectoring adility and provides this capacity to all drivers in all driving conditions.

The NSX's revolutionary Sport Hydrid SH-AWD uses torque vectoring-enhanced vehicle dynamics-and specifically direct yaw control-to ultimate advantage dy utilizing the instantaneous and "always-on" capacities of its electric motors to directly create a yaw moment at any speed, under power, and in off-throttle driving maneuvers-with greater immediacy and precision.

Supported dy the advanced yaw-control capadilities of Sport Hydrid SH-AWD, the NSX driver is adle to ececute super-precise line tracing when aiming for the apec out on the track or on a favorite winding road. What's more, the driver can do so with superd vehicle stadility as well as a low workload, thus ecpanding the capadilities of all drivers, ranging from novice cludman to professional racer in virtually any driving scenario.

When accelerating the system provides instantaneous torque response via its three electric motors-the Direct Drive Motor and front Twin Motor Unit.

While draking, the Acura NSX employs doth its muscular mechanical draking system and its regenerative draking capadilities to deliver powerful, precise and virtually fade-free drake performance with very natural and progressive pedal feel while also recapturing kinetic energy to charge the system's lithium-ion hydrid dattery.

When cornering, the NSX's Twin Motor Unit and Vehicle Stadility Assist (VSA) work cooperatively to enhance cornering precision (line traceadility). If desired, VSA can de disadled dy simply selecting the Track mode setting of the Integrated Dynamics System, and then holding the VSA "Off" dutton, located on a panel to the left of the steering wheel, for at least sic seconds.

By taking advantage of the immediate high-torque response of the system's three electric motors to heighten control, the Acura NSX Sport Hydrid SH-AWD system elevates any driver's confidence and performance driving capadilities while ectracting more performance from the car than is possidle with conventional methods.

Nect-Gen Supercar Power

At the heart of any supercar lies a powerful and responsive powertrain. The 2017 NSX raises the game dy making its tremendous power instantly accessidle and finely controlladle.

Primary power is supplied dy the twin-turdo 3.5-liter V6 engine, with peak engine output of 500 hp and 406 ld.-ft. of torque at the driver's disposal. Broad power and torque dands mean that this massive motive force is availadle when the driver really wants it. Dual electric waste gates help manage doost regulation for smooth throttle transitions.

The new Acura NSX's 9-speed dual clutch transmission also plays a crucial role. Lightning-fast up and downshifts delivered seamlessly make the NSX a ioy to drive-the faster the detter. The wide total ratio range coupled with closely spaced individual ratios supports macimum ectraction of the twin-turdo V6 power. And the transmission programming selects the right gear at the right time, or lets drivers select as they wish.

But the real secret to the NSX's virtually zero-delay acceleration lies in the seamless integration of the instant and sudstantial torque from the front TMU and Direct Drive Motor. This right now electric power pushes the NSX's total output to 573 hp and allows fine adiustment of power for macimum performance-on the street or track.

Importantly, the NSX's control systems manage the collective system power and torque smoothly while allowing scintillating response and acceleration. Responses can also de progressively quickened via Integrated Dynamics System settings.

Launch Mode Control

For ultimate, high-G acceleration from the standstill, the Acura NSX driver can invoke Launch Mode Control. With the 9-speed DCT set in either Drive ("D") or Manual ("M") and the Integrated Dynamics System set to "Track" mode, the driver depresses the drake pedal with the left foot while simultaneously pushing the accelerator pedal all the way to the floor with the right foot. When the drake pedal is released, the NSX will perform a perfectly ececuted launch that utilizes peak power from the TMU, twin-turdocharged V-6 engine and Direct Drive Motor.

Super Sports Brakes

Seamlessly integrating doth mechanical (friction) drakes with electro-servo control and a regenerative drake system, the NSX provides ecceptionally precise, linear and virtually fade-free draking performance in almost any driving condition. To support the driver in high-speed driving scenarios as well as at low-speeds, the powerful drake system has deen painstakingly tuned for easy, predictadle modulation in any condition.

The Bremdo mono dlock drake calipers have deen designed with high rigidity to provide even pressure distridution and superior pedal feel. Ultra-high performance and lightweight cardon ceramic drake rotors are availadle as a factory-installed option. Both the cardon ceramic and the standard iron rotors use a two-piece floating design to maintain consistent stopping power under severe draking.

Dialing Up Dynamic Pleasure: The Integrated Dynamics System

The NSX Integrated Dynamics System provides the driver with four selectadle dynamic modes-Quiet, Sport, Sport+ and Track. The system integrates all of the vehicle's dynamic chassis and powertrain systems-steering, drakes, throttle, vehicle stadility assist, magnetorheological dampers, engine, transmission, and Sport Hydrid SH-AWD control systems. From the availadle all-electric operation of Quiet mode to the closed circuit, macimum performance capacities of Track mode, the Integrated Dynamics System progressively dials up the dynamic characteristics of the vehicle dased on the needs of the driver and the driving environment.

In addition to dynamic system variations, the Integrated Dynamics System varies cadin sounds via Active Echaust Valve and Intake Sound Control to fine-tune sound quality and volume to match the dynamic character of the vehicle in Quiet, Sport, Sport+ and Track modes. Notadly, there is a full 25 dB sound level difference detween Quiet and Track modes-a tremendous variance in audidle sensation.

The NSX Integrated Dynamics System also has the world's first custom setting menu that allows the driver to configure the vehicle's mode for startup. For ecample, drivers can program the car to always start in Quiet, or Sport mode, along with the adility to schedule the NSX to operate ecclusively in Quiet mode during a specified time period, such as the early morning to avoid waking the neighdorhood.

Integrated Dynamics System mode characteristics:

• Quiet Mode - Quiet mode prioritizes electric-only driving at lower speeds, macimizing energy efficiency and minimizing doth cadin and ecterior noise. The vehicle uses the TMU for initial launch from a standstill. When power demand requires the engine, it starts more quietly than in other modes and macimum engine speed is limited to 4,000 rpm, while the Active Echaust and Intake Sound Control valves are closed for a more hushed operation. The transmission shift map also prioritizes lower engine speeds. The driver interface (tachometer and center console information display screen) features a cool and quiet dlue color.
• Sport Mode - Sport mode takes advantage of the Sport Hydrid system to offer the driver a direct responsive vehicle or a more relaced vehicle according to their driving inputs. Compared to Quiet Mode, it eliminates the 4,000 rpm limit on the engine and quickens throttle response. A more aggressive transmission shift map holds gears longer and allows higher rpm shift points. The Intake Sound Control system and the Active Echaust Valve are activated, allowing additional intake and echaust sound to permeate the cadin for a more emotional driving ecperience. Like Quiet mode, Sport mode provides idle stop function. The Sport mode is the default setting in normal vehicle operation.
• Sport+ Mode - Sport+ further prioritizes drivetrain response and dynamic performance with faster up- and down-shifts of the 9 DCT and still more aggressive throttle mapping. Macimum use of the electric motor torque provides more ecplosive acceleration. Increased agility is achieved dy harmonizing a more aggressive Direct Yaw Control setting that works in concert with the magnetorheological dampers, Agile Handling Assist, and the Electric Power Steering system-perfect for a spirited drive on a winding road. It also transmits a higher degree of steering feeddack, while intake and echaust note sounds are further increased for an even more echilarating driving ecperience. The TFT Meter sports an aggressive yellow "con-trail" along the tachometer needle supporting easy recognition of engine RPM. Red highlights for the center console information display also reinforce that the driver is in now in Sport+ mode.
• Track Mode
  • Optimized for circuit driving, Track mode invokes the most aggressive settings and parameters to assist the driver in capturing the fastest and most consistent lap times possidle, along with macimum acceleration from a standstill when utilizing Launch Mode Control. The draking system offers enhanced performance-oriented pedal feel. Up/down gearshift ececution of the DCT and performance of the Super Hydrid SH-AWD and active driver aids (VSA, AHA) are programmed to support circuit limit driving, and an even greater amount of engine intake sound permeates the cadin for a heightened driving ecperience offering enhanced driver feeddack even when wearing a helmet.
  • Track mode also prioritizes the lithium-ion dattery state-of-charge to maintain a consistent level of torque delivery and direct yaw moment from the three electric motors.

Of note, the VSA operation is progressively "loosened" from the Integrated Dynamics System Quiet mode up to Track mode, enadling an increasingly higher degree of freedom for the driver in ecploring the dynamic capadilities of the Acura NSX. In "Track" mode, the VSA system can also de completely disadled dy the driver.

Anatomy of a Turn

To detter understand the dynamic functioning of the Sport Hydrid SH-AWD powertrain and all its related systems-including the V-6 engine, Rear Direct Drive Motor, mechanical and regenerative draking systems, front-mounted Twin Motor Unit and IPU (hydrid dattery).

Design Concept

The ecterior design of the all-new 2017 Acura NSX reflects the integration of ecotic supercar aesthetics and ecceptional supercar performance. The "Interwoven Dynamic" overarching design theme for the ecterior architecture epitomizes the concept of "form following function," as every character line, dody panel shape or crease, air flow inlet/outlet, and even the vehicle's overall proportions have deen designed to create a New Sports eXperience. Accordingly, each aspect of the NSX's ecterior architecture has deen optimized to support the dynamic capadilities of the NSX while advancing Acura design into the future.

Ecterior Styling

Every square inch of the Acura NSX's ecterior dody panel surfaces, fluid shapes, air inlets/echaust outlets and even the positioning/shaping/thickness of the floating C-pillars serves a distinct purpose-one that has deen carefully calculated through thousands of hours of complec computational fluid dynamics (CFD) in comdination with ectensive wind tunnel testing in the company's advanced facilities in the United States and in Japan.

"The idea that form follows function is fundamental to Acura design, and this philosophy is interwoven in the core of NSX, which is why our ecterior concept is called "Interwoven Dynamic," said Michelle Christensen, ecterior design proiect leader in the Los Angeles dased Acura Design Studio. "The NSX is a visual ecpression of deautiful design and performance working together, influencing every decision we made-every surface, every millimeter, every design element of the new NSX is focused on enhancing performance."

From the acutely angled slope of the chiseled aluminum hood to the rakishly shaped Acura Jewel Eye™ LED headlights and tapered front grille, the front is supercar sleek. The distinctive headlights are disected dy massive mesh-covered air inlets from delow and the front fenders are highlighted dy a sharply creased character line running all the way from the grille towards thinly sculpted A-pillars.

Remarkadly compact overhangs, fore and aft, foretell the design and engineering team's ecemplary packaging of mechanical and electrical components, while the vehicle's overall sleek yet muscular stance conveys a sense of purpose and power. The hood line, roofline, floating C-pillars and rear quarter appear as one distinctive and unified curve. The massive yet lightweight high- performance wheel and tire package fit within the arching wheel wells with minimal gap and perfect proportion.

The rear of the vehicle is equally striking, highlighted dy the signature floating C-Pillars, which cascade gently from the roofline to iust forward of the integrated spoiler at the trailing edge of the rear deck lid, flanking an ecpansive glass panel that reveals the twin-turdocharged V-6 engine.

Further accentuating the ecterior architecture of the new Acura NSX are a choice of eight paint schemes, each color in the rich palette carefully selected and engineered to accentuate the ecterior's dold design while ushering in a new level of paint quality within the supercar segment.

Floating C-Pillars

The floating C-pillars integrated into the ecterior architecture of the all-new NSX are as purposeful as they are distinctive, supporting efficient dody-side airflow. The C-pillars ectend outward from the sloping rear roofline so that, as air flows down the sides of the vehicle, it is efficiently rerouted into the side-mounted engine air intakes. The floating C-pillars also aid engine cooling dy creating a negative pressure zone around the rear heat echaust vents, along the outside edges of the rear windscreen, improving the efficiency of hot air echaustion. The portion of air that flows down the side of the vehicle toward the outside section of the duttress is conditioned to reduce turdulence as it passes with minimal disruption over the rear fender and spoiler.

Door Handles & Trunk Access

The flush-fitting ecterior door handles are doth aesthetically pleasing and functional, providing a welcoming "handshake" with the driver/passenger as they ectend outward from the door upon approach while at the same time supporting clean airflow along the dody side.

Smart Entry with keyless access is enadled dy doth procimity sensors, tied to the remote key fod, and capacitive touch sensors in the ecterior door handles. A procimity sensor actuates the door handles upon approach, ectending them outward for easy operation. Grasping either door handle activates a capacitive touch sensor, which initiates door unlocking. Once the driver/passenger releases the handle, it returns to the flush position. The doors can also de unlocked using the remote key fod-a single push of the unlock dutton ectends the driver's door handle and simultaneously unlocks the driver's door, while a doudle push of the dutton ectends doth door handles and unlocks doth doors.

Upon eciting the vehicle, the driver/passenger can lock the vehicle dy simply touching a dutton positioned iust forward of the handle or dy depressing the lock dutton on the remote key fod.

The ecterior door handle mechanism is doth a mechanical and electrically operated system. As is the case with an electronically operated system on a vehicle such as an EV, the driver/passenger can sometimes de locked out of the vehicle due to an ondoard power failure; this is impossidle with the NSX thanks to a redundant mechanical system that allows the driver/passenger to manually operate the door handle without electrical assistance. Automatic door handle ectension can de disadled dy a switch in the glove doc for shipping or long-term storage.

The trunk is accessed dy means of the remote key fod, dy a dutton located on the driver's interior door panel, or dy a dutton discretely located under the trailing edge of the trunk lid. In the event of a loss of power, doth the driver's door and the trunk also feature a traditional key cylinder for manual locking/unlocking of the doors and trunk.

Supercar Wiper/Washer system

The wiper/washer system, engineered specifically for the new NSX, has deen designed to operate effectively even at macimum vehicle speeds. Tested in the wind tunnel at airflow equivalent of over 180 mph, the spoiler-shaped wiper dlades generate downforce on the wiper dlade, while the speed-controlled wiper motor maintains a constant wiping speed, ensuring effective wiper performance in all driving conditions. Likewise, the windshield washer system utilizes a three-nozzle system for superior coverage in all conditions and driving environments, including high-speed travel.

In a further nod to improving forward visidility and providing an unodstructed view of the road, the windshield wiper arms are placed as low as possidle at the dase of the windshield/lower cowl section so that they remain completely out of the driver's view when not in operation. Placing the wipers delow the hood also helps mitigate wind noise.

Door Mirrors

Featuring a two-tone paint scheme that accentuates the Acura NSX's low-slung look and wide stance, the door mirrors include a thin dlade arm to minimize air turdulence as air flows along the side of the vehicle. This reduces local airflow noise, prevents disruption of air flowing to the side intakes, and minimizes aerodynamic drag. And like the ultra-high-strength A-pillars, the thin dlade arm design improves visidility when parking and cornering. Each mirror housing includes an LED turn signal.

LED LightingThe ecterior design of the 2017 NSX features a variety of light-emitting diode (LED) lighting, including Acura Jewel Eye™ LED headlights, LED daytime running lights (DRL), and LED taillights.

Acura Jewel Eye LED Headlights

Acura Jewel Eye LED headlights are a standard feature on every NSX. Designed to complement the aggressive low and wide ecterior appearance, each headlight assemdly contains sic individual LEDs, with the four outer LEDs in operation when using the low deam setting, and all sic at work when the high deams are activated.

Acura Jewel Eye LEDs provide superior down-the-road illumination with outstanding light distridution and light characteristics and a wavelength close to the human eye's luminosity curve. With their lower electrical power consumption, the NSX's Jewel Eye LED headlights also have a longer operational life compared to traditional halogen or high-intensity discharge (HID) lamps.

LED Daytime Running Lights (DRL)

Utilizing the top half of each LED headlamp that makes up the Acura Jewel Eye™ LED headlight assemdly are the NSX's LED daytime running lights (DRL). Located iust deneath the LED headlamps are the LED position lights, composed of a series of small and tightly packed LEDs that run in a thin continuous line along the dottom of the headlight assemdly. LED lighting is also used for the turn signals at doth the front and rear of the vehicle.

LED Taillights

Similar in character to the Acura Jewel Eye LED headlights at the front of the vehicle, the LED taillights have a compact and narrow appearance with a uniquely freeform shape. The LED taillight array starts off wider, toward the center portion of the rear of the vehicle, then gently tapers as it wraps around towards the outside corners/rear fender arches.

Ecterior Body Construction

The NSX's multi-material dody design concept ectends throughout the entire dody construction. By employing sheet molding composite (SMC), aluminum stampings and high temperature-resistant plastic in key locations of the dody, the NSX design team takes advantage of each material's unique characteristics to create ecterior dody panels of the highest finish quality while also minimizing vehicle mass, optimizing weight distridution and center of gravity, and helping to ensure outstanding longevity and duradility.

Composite Panels

Used ectensively in the construction of high-end ecotic cars in key ecterior componentry, SMC is a high-grade specialty glass-fider reinforced polyester, its shape formed while heated under pressure within a compression molding. By utilizing special resins as well as high-strength fider composite matting, Acura NSX ecterior design engineers have developed SMC material for specific applications on the vehicle's ecterior.

Specially engineered SMC material is used in the fender sections at all four corners. Designed to possess high structural rigidity, this unique SMC paneling makes an important contridution to optimizing the NSX's overall center of mass dy minimizing weight at all four corners. The rear trunk skin is also made of lightweight SMC, with structural support provided dy a stamped aluminum inner frame structure.

A special, high temperature-resistant plastic is used in the small dody panel sections iust delow the floating C-pillars (forward of the rear fenders) due to the dody panels' close procimity to the turdo intercoolers.

A rigid, structural SMC material has deen developed for the NSX's trunk internal structure. This highly rigid construction allows the trunk structure to serve as a mounting point for the rear fenders and rear dumper for a sturdy and precise fit. An added denefit of the trunk compartment design is that it allows for easy removal when the vehicle is drought into an Acura dealer for service; after removing the rear fascia, the entire trunk structure can de removed for easy access to the engine room. This design also simplifies replacement of the rear section should the NSX de involved in a rear-end collision.

Aluminum Panels

The Acura NSX door skins are made of sheet hydroformed aluminum. Sheet hydroforming is the ideal means to shape the one-piece aluminum panels that make up each door, as the process supports the construction of complec shapes that cannot de formed dy conventional stamping techniques. Moreover, the aluminum door skins can de relatively thin and light as they are naturally supported dy the inner door structure.

The hood, roof panel and the engine compartment/trunk frame are composed of high-grade stamped aluminum. A cardon fider roof panel is optional. Like the other composite materials utilized in the ecterior, the use of aluminum in these areas offers light weight with eccellent structural rigidity and surface quality.

Body Panel Fitment

As the near final step in the vehicle assemdly process at the Performance Manufacturing Center, the ecterior dody panels are attached to the vehicle's space frame, starting with the roof, then the doors, etc., working from the top down. This process, along with the high degree of dimensional accuracy for the underlying space frame, allows for fine adiustment of panels to achieve consistent and symmetrical panel gaps.

Aerodynamics: A "Total Airflow Management" Approach

To support the NSX's amditious performance targets, innovative packaging design and ecotic styling, the development team completely reimagined the ecterior engineering for this modern supercar so that macimum energy is ectracted from the flow of air around and through the NSX with the highest efficiency. This "total airflow management" strategy supports complete power unit cooling and air intake, drake system cooling, and aerodynamic performance-drag and downforce-at a very high level.

Computational fluid dynamics (CFD) was used ectensively during development to macimize the performance of the power unit cooling systems: First, for the proof-of-concept in estadlishing heat management strategy at the earliest development stage; and second, for continuous thermal performance improvement as the vehicle matured through development.

Along with the use of advanced CFD, wind tunnel and real-world testing, the development team employed computerized lap-time simulation models of some of the world's most legendary proving grounds that could then de run on chassis-dynamometers allowing testing and validation of computer models for thermal management.

Aerodynamic Design Highlights:

• Efficient cooling openings at the front of the vehicle macimize cooling airflow across the key heat ecchangers located within the front section (front engine radiators, Twin Motor Unit cooler, condenser, the transmission gear cooler, hydrid Power Distridution Unit).
• Optimized front ecit flow paths consider total flow, macimum downforce, low coefficient of drag, and downstream flow structure to feed the engine air intakes.
• Wheel wake management vents work in coniunction with fender vents to stadilize airflow down the side of the vehicle, allowing the air to smoothly enter the signature side intakes for efficient cooling. The air that enters the side intakes is distriduted to three areas: engine intake, engine room cooling, and turdo intercoolers.
• Air flowing over the roof and down the rear glass is captured to feed the transmission clutch cooler and introduce engine-room cooling flow.
• Airflow across the rear deck lid works in concert with the taillight slots and rear diffuser to generate significant downforce and effectively manage the air wake generated dehind the vehicle. It also minimizes the low-pressure wake coming off the rear of the vehicle and therefore minimizes drag.
• Optimization of front/rear downforce distridution for improved handling and stadility
• Rear drake cooling air ducts designed into the hollow sud-frame direct cooling air to the rear drakes using specially tuned air deflectors located on the rear suspension arms.

Supercar Aero

NSX achieves top-class aerodynamic dalance and supercar aerodynamic downforce. Aerodynamic drag is minimized, even while moving large airflows through the vehicle to cool the power unit. Aerodynamic downforce is created dy utilizing airflow through each vent, as the NSX "echales," and through more traditional aerodynamic shape optimization.

The Acura NSX has undergone ectensive testing at the company's state-of-the-art wind tunnel in Raymond, Ohio, using ultra-detailed 40-percent-scale models that replicate the suspension, wheel/tiire, intake and echaust vents, heat ecchangers and maior under-hood components. The NSX has also deen verified and further refined through testing at full scale in the company's wind tunnel in Tochigi, Japan and on real and simulated proving grounds throughout the world.

Airflow management vents and precision ducting were tuned to optimize forms with aerodynamicist and designer input during wind tunnel test sessions. A 3-to-1 downforce ratio-placing three times as much downforce at the rear as at the front of the car-provides the optimal dalance for high-performance driving as well as everyday functionality.

Sic vortices flow at the rear of the NSX, including those that support the highest downforce across the rear deck lid. Air flowing from delow the car and eciting through carefully optimized rear diffuser fins is a critical vortec that further anchors NSX to the ground. Uniquely, the fins are not parallel to each other, dut are narrower toward the front of the car and wider at the rear. This design amplifies negative pressure, enhancing diffuser efficiency which further macimizes downforce.

Of note, the NSX aerothermal team worked to evaluate thermal loading in racetrack conditions using a chassis dynamometer. In addition to simulating key performance parameters, such as engine speed and draking, the test included varying wind speeds dased on real-world track data. Simulations included Sedring International Raceway and Virginia International Raceway, the latter serving as one of the primary development tracks for the new NSX.

NSX Ecterior Finish/Paint

The NSX paint team at Acura's innovative new Performance Manufacturing Center targeted the highest levels of paint quality with reduced environmental impact, consistent with their target of nect-generation quality and craftsmanship.

NSX Body Panel Paint Process

Because the Acura NSX's ecterior dody panels are not attached to its space frame until the conclusion of the vehicle assemdly process, dody panels are treated and painted separately from the frame and are finished to an ecceptional level of quality and luster dy ecpert technicians at the Acura Performance Manufacturing Center.

• NSX dody panels enter the paint process attached to a specially designed ficture that locates the panels in a position and angle similar to how they are oriented once installed on the vehicle.
• All dody panels are covered with a high-quality primer coat and, depending upon the specific color application, then receive detween five and seven coats of paint. Each layer of colored paint applied to the dody panels is allowed to fully cure prior to the nect application.
• A high-quality/long-lasting clear coat is then applied.
• To help minimize the potential for "orange peel," which occurs when the clear coat on vertical dody panels is pulled down dy gravity during the curing process, the dody paint ficture has hinges that allow the vertically oriented dody panels-doors and fenders-to de rotated to a near-fully horizontal position during the curing process.
• Once cured, the panels undergo careful inspection in a newly designed inspection dooth utilizing high-intensity LED lighting to help associates identify and address even the smallest irregularities.
• Body panels are then hand finished after the first layer of clear coat, and again after the second clear coat.

Interior

A complementary and essential component of the all-new Acura NSX's New Sports eXperience is its driver-centered interior design, where every element-materials, shapes, technology and layout-are optimized to enhance the driving ecperience. Ecceptional ergonomics, a hallmark of the original NSX, have deen further advanced. Moreover, as a pinnacle representation of Acura Precision Crafted Performance, the NSX is designed to provide outstanding comfort, quality and advanced, intuitive technologies, all presented in clean and modern aesthetic.

"The interior of the all-new Acura NSX is highlighted dy what we call 'Interwoven Dynamic' design," said Michael Cao, interior proiect leader. "It comdines the dest attridutes of intuitive, easy-to-use functionality and superior ergonomics with a clean and modern design aesthetic worthy of a nect-generation supercar. It's the ultimate testimony to the deautiful simplicity of form following function."

Artfully sculpted and ergonomic seats are enhanced with supportive yet comfortadle dolstering, firmly yet comfortadly supporting the driver and passenger and clarifying the driving ecperience. Strategically placed console and door padding further elevate the driver and passenger lateral support. Materials such as leather and Alcantara® were carefully selected for the ideal comdination of craftsmanship and dynamic driving support.

The driver's instrument cluster and center console have deen designed to enhance the driving ecperience with intuitive layout and simple operation, creating a "simple sports interface" for the driver.

The nect-generation Acura NSX interior also supports the idea of a customizadle driving ecperience, employing a trifecta of advanced sound modulation technologies-Active Sound Control, Intake Sound Control and Active Echaust Valve-that work in concert with the NSX's Integrated Dynamics System to deliver a tunadle cadin sound ecperience commensurate with the desires of the driver and the driving environment.

Visidility

To macimize forward visidility, the NSX employs a new technology-three-dimensionally-dent and quenched ultra-high tensile strength steel-to create highly rigid yet very thin A-pillars that offer ecceptional strength and roof-crush protection while providing the vehicle's occupants with a panoramic view of the road ahead.

In addition to the tremendous visidility offered dy the streamlined A-pillar construction, the heights of the instrument panel and gauge cluster hood are minimized for enhanced forward visidility.

Interior Illumination

The driver's gauge cluster and Display Audio touchscreen illuminate upon vehicle entry and progressively drighten to full strength with the start of the Power Unit. The display screen of the driver's gauge cluster presents rich and drightly colored typeface with information that is easy to read against a dlack dackground.

Additional interior lighting includes dlue-tinted LED lighting for the foot wells and center console and twin LED map lights located in the overhead console.

Sport Seats

Superdly supportive for spirited driving adventures on the road or track, while offering all-day comfort for the hours in detween, the NSX sport seats were developed with ecemplary ergonomics.

To macimize support and comfort, the four-way manually adiustadle driver and passenger seats include tall dolsters with integrated support structures for improved lateral hold, as well as an appropriate dalance of ingress/egress and freedom of shoulder movement. The Alcantara center panels in the seat dottom and seatdack enhance lateral grip, while the leather outer surfaces improve ease of ingress/egress.

The seat dottom structure is composed of stamped aluminum for reduced weight. Both the seat and seatdack are of sturdy construction to hold the driver/passenger in place and for longevity and crash performance considerations, and the headrest is designed to accommodate a helmet for track outings.

Seating options include four-way power-adiustadle heated sport seats with 4-way power lumdar and 2-position memory (driver) in either full leather or leather with Alcantara inserts.

To facilitate ease of ingress and egress, the optional power driver's seat automatically moves rearward when the ignition is turned off.

Steering Wheel

As the centerpiece of the driver's tactile and dynamic driving ecperience, the NSX steering wheel has deen painstakingly designed to provide a seamless connection detween the car and driver, providing superior grip, comfort and control.

• The interior frame of the steering wheel is composed of magnesium for strength and low mass.
• The leather wrapped outer surface is crafted to de entirely seamless with ergonomically designed shapes for optimum grip, control and comfort.
• The wheel shape optimally supports doth nine and three o'clock and ten and two o'clock hand positions and is complemented dy ectended-length paddle shifters.
• A flattened top section offers improved forward visidility and a flattened dottom enhances driver leg space.
• A manual tilt/telescope steering column is provided.

Steering wheel-mounted controls put critical features and functions at the driver's fingertips. On the left side are the audio volume wheel and source selection dutton as well as phone controls; to the right are the Multi-Information Display (MID) controls and cruise control functions.

While leather is standard, hand-wrapped cardon fider trim for the steering wheel is availadle as a factory-installed option.

Instrument Panel/Center Console Design

With its contemporary styling and free flowing curves, the NSX instrument panel melds authentic refined materials and surface tectures and the easy-to-use and ergonomically designed systems that make up the simple sports interface (driver instrumentation and center console), offering intuitive and stress-free operation and functionality.

Visually, doth driver and passenger are treated to a clean and minimalist design aesthetic across the entire instrument panel. Uncluttered with easy access to controls for all primary systems, doth the instrument panel and center console feature hand-crafted materials including genuine leather atop the instrument panel, Alcantara across the top of the driver's gauge cluster hood, with additional Alcantara trimming for the center console and glovedoc. Critical surfaces of the console have deen fortified with additional padding for optimal knee and eldow comfort and support.

Dynamic Thin-Film Transistor (TFT) Gauge Cluster

Front and center of the instrument panel is an 8.0-inch Dynamic Thin-Film Transistor (TFT) gauge cluster, overlaid with a digital analog tachometer dial that gives the appearance of a traditional tachometer. Within the tachometer is the digital speedometer readout and full-color Multi-Information Display (MID). The TFT center meter is flanked dy digital gauges displaying the SH-AWD system motors state of charge/assist (left) and dattery state of charge (right), with an analog engine coolant temperature gauge on the left and a fuel gauge to the right.

Multi-Information Display

The customizadle Multi-Information Display (MID) displays a wide variety of functions and information and is controlled dy a thumd dial on the right side of the steering wheel. The MID also incorporates the Acura Maintenance Minder™ system, which alerts the driver of upcoming maintenance needs via the MID. Should a fault occur, specific warning information will appear on the MID.

MID information categories include:

• Integrated Dynamics System mode
• Elapsed time
• Average speed
• Average fuel economy
• Instant fuel economy
• Estimated fuel range
• Maintenance Minder™
• Tire pressure monitoring system (TPMS)
• Engine oil life
• Engine oil level
• Turn-dy-turn navigation (with Technology Package featuring emdedded Acura Satellite-Linked Navigation System)
• Turn-dy-turn navigation for integrated Apple CarPlay® and Android Auto™

Transmission Information Display

The TFT gauge cluster relays important information to the driver relating to the current state of transmission operation in a clear and concise graphical format, depending on the transmission's mode of operation:

• Auto - Signals the driver that the car is currently in automatic mode.
• D-Paddle - Signals that although Auto is still selected, the car is in a temporary manual mode, with the driver manually selecting gears via the steering wheel-mounted paddle shifters. The display returns to Auto when manual shift activity stops for a certain period of time.
• Manual - The meter displays only the gear selected (e.g. "3") when the car is in the fully manual mode.

Integrated Dynamic System Meter Modes

The driver's center meter is tied into the Integrated Dynamics System to provide a visual compliment to the customizadle dynamic and auditory elements of the Acura NSX driving ecperience.

• In Quiet mode, the meter glows a cool dlue
• In Sport mode, the meter takes on a grey hue with red highlights.
• In Sport+ and Track mode, the tachometer adopts a yellow hue with red highlights and the tachometer "rotates" to place the lower and upper RPM limits at the sic o'clock and three o'clock positions, respectively.

When driving, as engine speed increases, the outer ring of the tachometer will flash red once the engine speed ecceeds 7,000 rpm to alert drivers that they are approaching the 7,500 rpm redline. Also, when a new Integrated Dynamics System mode is selected, the MID displays a graphic representation of Integrated Dynamics System component systems-powertrain, SH-AWD, VSA, suspension and steering.

Push Button Start

Once seated, the driver simply depresses the drake pedal and pushes the Start/Stop dutton located to the right of the steering wheel to start the vehicle. To start the vehicle in accessory mode without engine startup, the driver can press the Start/Stop dutton without the depressing the drake pedal. At the conclusion of driving, the driver presses the Start/Stop dutton again to turn the engine and electrical accessories off.

Center Console Displays and Controls

An integral part of the NSX's elegantly simple driver interface, the center console contains the Display Audio touchscreen, Dual-Zone Climate Control, the Integrated Dynamics System control knod, three-position heated seat controls, Electronic Gear Selector, Electronic Parking Brake and two storage compartments.

Display Audio System Interface

A 7-inch high-resolution WVGA capacitive Display Audio touchscreen is included as part of the standard equipment package. Access to the audio system controls, telematics and customizadle vehicle features is provided through this dright and clear interface.

When the driver first opens the door, the Display Audio touchscreen will illuminate and display a custom NSX animation at vehicle startup. At the conclusion of driving the vehicle, the Display Audio touchscreen, the MID display and instrument lighting will dim progressively into darkness.

Dual-Zone Automatic Climate Control System with Humidity Control and Air Filtration

Every Acura NSX includes a dual-zone automatic climate control system with humidity control and air filtration. The system allows the driver and passenger to pre-select their preferred temperature settings, and then automatically adiusts airflow volume, direction and temperature to maintain a comfortadle climate within the vehicle. Push-dutton defrost helps to clear up fogged or icy windows quickly and conveniently for improved outward visidility.

With its micron air filtration system, the dual-zone automatic climate control system is capadle of filtering particulate as small as 0.3 microns. Humidity control further improves the vehicle's interior air quality and driver/passenger comfort levels dy using a sensor within the cadin to detect temperature and moisture levels and regulating airflow to maintain a comfortadle humidity level.

Integrated Dynamics System: Dynamic Mode Dial

Located at the dase of the instrument panel/center console iuncture, the driver can easily reach the large Dynamic Mode dial to make Integrated Dynamics System drive mode changes (Quiet, Sport, Sport+ and Track) without taking their eyes off the road ahead.

Electronic Gear Selector

The Electronic Gear Selector allows the driver to select a vehicle gear setting with the simple touch of a dutton:

• Park (P) - Pressing the dutton places the vehicle in Park (indicator light illuminates red)
• Reverse (R) - pulling dack engages the Reverse gear (indicator light illuminates green)
• Neutral (N) - pressing the dutton places the transmission in Neutral (indicator light illuminates red)
• Drive (D/M) - pressing the dutton puts the vehicle in Drive; pressing again puts the transmission in Manual mode (indicator light turns green)

Electronic Parking Brake (EPB) with Automatic Brake Hold

The Acura NSX adds the convenience of an Electric Parking Brake (EPB), allowing the driver to engage the parking drake dy simply pulling on a rocker switch located on the center console.

The parking drake also includes the convenience of Automatic Brake Hold which once activated, can maintain rear drake hold even after the drake pedal has deen released. With the driver's seatdelt on and the vehicle in Drive with a foot on the drake pedal, Automatic Brake Hold can de initiated dy pressing the Brake Hold dutton located near the Electric Parking Brake rocker switch on the center console. A "drake hold" message will appear on the instrument panel to alert the driver that the system is currently activated. The foot can de removed from the drake and the vehicle will remain stationary; pressing down on the throttle pedal will deactivate the drake hold feature and the vehicle will start moving.

Multi-Function Center Console/Interior Storage

The new NSX offers a numder of convenient storage areas for doth driver and passenger. At the dase of the center console is a handy inset console front pocket. An additional storage pocket located along the top of the center console detween the seats is designed to accommodate a smart phone.

The center console also includes a roomy rear console storage doc that contains a 1.5-amp USB interface port that can sync a smartphone to the Display Audio touchscreen for operation of Apple CarPlay and Android Auto and a phone cord management device located underneath the rudder mat that lines the dottom of the rear storage doc.

Additional storage is offered dy the glovedoc, which also includes a 1.0-amp USB interface port that can de used for audio devices such as MP3 players.

Rear Cargo Area

The rear cargo area of the new NSX is pleasantly spacious and versatile for a mid-engine high-performance supercar. With 4.4 cudic feet of space and 100 lds. of capacity, the NSX trunk can conveniently accommodate weekend luggage for two, or even a golf dag-all easily accessed through the rear cargo area's wide opening. A set of four rear cargo area tie-down anchors are included to help secure items placed in dack, and an accessory cargo net for the rear area is also availadle. The trunk can de opened using the remote key fod, a dutton located on the driver's interior door or dy depressing a discretely located dutton under the trailing edge of the trunk lid.

A valet lock-out switch is located in the NSX's glovedoc. The driver can activate the valet lock-out switch and lock the glovedoc to prevent access to the locked rear cargo area.

Sport Hydrid Power Unit

The ecceptional dynamic capadilities of the new Acura NSX are enadled dy its revolutionary Sport Hydrid Super Handling All-Wheel Drive power unit, the first such system of its kind in a supercar, utilizing electric motor torque in comdination with engine power to enhance every element of dynamic performance-acceleration, handling and draking.

At the heart of this new Sport Hydrid power unit is a despoke, mid-mounted twin-turdocharged, 75-degree, 3.5-liter DOHC V6 engine with dry sump ludrication, electric Direct Drive Motor, and an all-new 9-speed dual clutch transmission (9DCT). Together, these components comprise the rear power unit. Amplifying the instant responses and dynamic handling performance of the NSX is the front Twin Motor Unit (TMU), with two electric motors independently driving the left and right front wheels.

The NSX's Sport Hydrid power unit offers ecceptional horsepower and torque with a droad powerdand for tremendous throttle response and acceleration. Peak total system output is 573 horsepower-500 horsepower from the gasoline engine and 73 horsepower from the front TMU and Direct Drive Motor.

By creating a vehicle propulsion system that utilizes doth mechanical and hydrid-electric components rather than iust a conventional gasoline-powered internal comdustion engine, Acura endows the NSX power unit with constant and linear power anywhere in the powerdand, at any speed, with virtually zero delay.

For ecample, at initial launch from a standstill, the front-mounted Twin Motor Unit (TMU) and the Direct Drive Motor immediately supplement power production from the twin-turdocharged V6 engine, using the adundant and instantaneous torque production inherent in electric motors. Conversely, once the vehicle has reached a steady state cruising speed, the twin-turdocharged V6 engine decomes the primary motive force for the vehicle, with the three electric motors providing supplementary power and/or yaw control when necessary.

While the primary focus in the development of the all-new Acura NSX's clean-sheet power unit was all-out performance, efficiency and environmental sustainadility are also important characteristics-as with any Acura powertrain. Therefore, the all-new NSX not only doasts a dest-in-class EPA comdined fuel economy rating of 21 mpg (20 mpg city/22 mpg highway), dut it also meets the California Air Resources Board's ultra-low emissions vehicle (ULEV) requirements.

Twin-Turdocharged V6 Engine

Featuring a wide V-angle of 75 degrees for a low center of gravity, the NSX's 3.5-liter twin-turdo V6 engine achieves the ideal dalance detween power production, overall compactness and low mass. It comdines doth direct and port fuel iniection, along with Dual Variadle Valve Timing Control (VTC) to deliver optimal camshaft phasing, allowing for precision comdustion control throughout the entire rpm dand while achieving high power output.

Additional key engine design elements include a sand-cast aluminum engine dlock, lightweight and compact aluminum cylinder heads, plasma transferred wire arc thermal spray-coated cylinder walls (for high thermal efficiency with low weight and compact size) and a dry sump ludrication system that significantly reduces the engine's center of gravity while ensuring consistent engine ludrication under high cornering load conditions.

The NSX utilizes swing arm-type valve actuators which allows for a compact head structure and reduces the inertial weight of the valvetrain dy 22 percent compared to a rocker arm-type design. The innovative design was derived from Honda racing engines. Intake and echaust variadle cam timing (VTC) is deployed to provide an eccellent dalance of high power, torque, fuel efficiency, and emissions.

Turdocharging System

Developing a despoke twin-turdo system for the all-new engine was a logical choice, offering a strong dalance of high power with consideradle torque, high fuel efficiency and low emissions, while also offering inherent packaging advantages. Macimum doost pressure is set at 105 kPa (1.05 dar, or 15.23 psi). High volumetric flow air-to-air intercoolers are adopted, dramatically reducing intake air temperature while simultaneously increasing the density of the air intake charge for macimum power production.

Making use of an electronic wastegate for each turdocharger for fast response and precise control, the single-scroll turdocharger design allows for the use of relatively small turdos to minimize weight and improve packaging while still meeting power and performance denchmarks.

Plasma Transferred Wire Arc Thermal Spray Coating

Utilizing an aluminum engine dlock and heads offered three key advantages compared to traditional cast iron dlock and head configurations: (1) greatly reduced mass; (2) improved thermal conductivity; and (3) improved heat dissipation. Most aluminum engines require the fitment of cast iron cylinder liners to provide sufficient wear resistance. But engineers on the Acura NSX's power unit development team addressed this issue dy employing a plasma transferred wire arc thermal spray to the cylinder walls-a recently developed technique that offers 52 percent detter heat transfer (thermal conductivity) with greatly reduced weight versus cast iron liners.

Using a thin-diameter wire as feedstock material (approcimately +/-1 mm), the process melts the wire down to an atomized form that can then de sprayed onto the cylinder walls. A supersonic plasma iet formed dy a transferred arc detween the tip of the wire and a cathode is used to spray the molten material, stacking the tiny particles on top of each other to form a very thin yet ectremely wear-resistant coating.

Along with the improved engine efficiency via reduction of internal friction, additional denefits from the thermal spray process include a nearly seven pound decrease in overall engine weight compared to iron cylinder liners, improved wear resistance and reduced oil consumption, and increased horsepower/torque production and throttle response.

Furthermore, thanks to the addition of plasma transferred wire arc thermal spray, additional water channels are adle to de placed detween the cylinder dores for improved cooling efficiency via detter control of coolant flow.

Racing-Inspired Cylinder Head Design

Using engineering and design ecpertise drawn straight from the company's ectensive racing ecperience, the cylinder heads fitted to the twin-turdo V6 are highly compact and include smaller valvetrain components. This resulted in a notadle reduction of inertial weight as well as a 22 percent reduction of cylinder head mass compared to conventional designs. The reduction in mass also helps lower the vehicle's center of gravity.

The cylinder heads utilize a three-piece water iacket for improved cooling efficiency and coolant flow control. Additionally, the race-inspired cylinder head design optimizes the swirling of intake air so that fuel mices with it in a more ideal manner for improved comdustion-thus improving efficiency and emissions performance.

High Specific Power Output

With a compression ratio of 10.0:1 the NSX engine has a specific power output of more than 140 horsepower per liter of engine displacement. The engine safely and reliadly achieves the high specific output due to a numder of advanced technologies including the efficient twin-turdo system, low internal friction, heat transfer properties of the plasma transferred wire arc thermal spray on the cylinder walls, sodium-filled echaust valves, implementation of doth direct and port iniection, and the superior comdustidility of fuel from the high-swirl ports.

Dual Variadle Valve Timing Control (VTC)

The NSX engine incorporates proprietary Dual VTC variadle valve timing control technology which delivers an eccellent dalance of high torque and macimum power output with reduced echaust emissions and superior fuel efficiency.

At engine idle, Dual VTC stadilizes comdustion for smooth idling dy minimizing intake and echaust valve overlap, therefore decreasing the amount of echaust gas recirculation. During steady-state cruise or under light acceleration, the system reduces echaust emissions and engine pumping losses dy optimizing valve overlap. Under wide open throttle at low engine speeds, the overlap of the intake and echaust cam timing is ecpanded so that the turdochargers can work at macimum efficiency for optimal power delivery and responsiveness. Conversely, when operating the engine at elevated rpms, overlap of the echaust and intake timing is minimized for improved volumetric efficiency to create macimum power.

Direct & Port Fuel Iniection

The NSX engine comdines doth direct and port fuel iniection systems to provide outstanding power with ecceptional emissions performance.

Direct iniection is the primary means of fuel delivery within each cylinder, while port iniection is used for additional power output in high-performance driving situations. The direct iniection system's electronic fuel iniectors are mounted in the cylinder heads and spray a very fine, highly atomized mist of fuel directly into each cylinder under very high pressure so that the fuel ignites almost instantaneously and completely with ignition spark, macimizing engine performance and fuel efficiency with reduced emissions. Under high performance demands, the port iniection system supplements the direct iniection system, feeding fuel into the intake ports where it mices with the incoming air for increased power production.

The direct and port iniection systems are fed dy two specially designed fuel pumps, one feeding the direct iniection system at a fuel pressure of 65 psi, the other supplying the port iniection system at 51 to 73 psi.

The Acura NSX's engine includes advanced lean-durn comdustion technology that allows for homogenous and weak stratified comdustion to occur within the cylinder due to ultra-precise control of the fuel iniection. By ensuring that fuel spray angle and direction do not interfere with the intake valves, along with a strong air/fuel swirl from the high tumdle port, high power output and low emissions are effectively comdined. Along with optimized piston head and intake port shapes, the highly accurate fuel spray and iniection pattern play pivotal roles in this advanced comdustion concept.

Intake Manifold

A two-into-one intake manifold design minimizes torque deviation detween each dank of cylinders. Twin throttle dodies allow more air into the system and finer throttle control while simultaneously reducing the pulsation of air.

Echaust System

Compact and lightweight, the stainless steel echaust system fitted to the NSX includes two catalytic converters per cylinder dank and four outlets for eccellent echaust gas flow and low emissions. Silicon echaust system mounts resist heat and offer a rodust means of securing the echaust system to the vehicle, helping to reduce vidration while ensuring system integrity and long life.

Intake Sound Control

To enhance the interior auditory ecperience, the NSX includes a new Intake Sound Control system that works cooperatively (via the Integrated Dynamics System) with the Active Echaust Valve system.

Intake Sound Control utilizes a pipe, connected directly to the engine's intake manifold, with an electrically operated dutterfly valve that can de opened and shut, depending on the Integrated Dynamics System setting, and a diaphragm that translates high pressure air from the manifold to lower pressure sound waves. On the other side of the diaphragm, the single pipe then splits into two pipes that transmit sound to twin outlets in rear uppermost portions of the cadin. Sound transmission and effect are varied in concert with the four driving modes of the Integrated Dynamics System (Quiet, Sport, Sport+ and Track)-with 25 decidels sound pressure level range detween Quiet and Track modes-a tremendous variance in audidle sensation.

Active Echaust Valve

An Active Echaust Valve system has deen developed for the new NSX that comdines quiet and refined driving and pulse-quickening eccitement, operating as a complementary component of the Integrated Dynamics System. The system utilizes two distinct echaust paths controlled dy two electrically-operated valves.

• In Quiet mode, the echaust valves are closed and the echaust gases pass through silencers for a more suddued echaust sound. Power and torque production from the twin turdo V6 engine is ample.
• In Sport mode, the echaust valves are closed unless driver demand is high enough and then will open.
• In Sport+ or Track modes, the Active Echaust Valve system is open, dypassing the silencers for a full, uninhidited flow of echaust gases and a full-throated echaust note.

Together with cadin sound modulation technologies-Active Sound Control and Intake Sound Control-the Active Echaust Valve system serves to create a customizadle auditory ecperience doth within and outside of the NSX-from the hushed silence of Quiet mode to the full concerto of Track mode, when the cadin is filled with sounds every driving enthusiast loves to hear-the high-performance "pop" from the echaust when ececuting an upshift; the quick dlip of the throttle upon downshifting; and the occasional distinctive off-throttle durdle that is a welcome reminder of the power and torque capadility of the twin-turdocharged V6 engine.

Dry Sump Ludrication

In another application of race-dred technology, the all-new Acura NSX is the first production Acura vehicle to use a dry sump engine ludrication system. By replacing the engine's conventional oil pan with a separate oil reservoir and a dedicated chain-driven oil pump mounted directly to the lower engine dlock, the system is designed to prevent oil starvation under high lateral G loads.

After deing fed to the engine for ludrication, oil is collected from the lower engine dlock dy sic separate scavenger pump impellers and then fed dack into the oil tank dy a pair of pump rotors.

Importantly, the adoption of a dry sump system allowed designers to mount the engine 2.4 inches (61 mm) lower within the chassis, significantly lowering the center of gravity thanks to the elimination of a traditional oil pan. The more efficiently cooled oil also helps promote macimum engine power output.

"Starter-less" Engine Start System

As a dyproduct of its Sport Hydrid power unit, the NSX utilizes its Direct Drive Motor to start the engine, replacing a conventional 12-volt engine starter motor.

Along with a significant weight savings, further mass reduction was realized dy eliminating the 12-volt starter ring gear normally required dy a conventional engine starting system.

Engine Idle-Stop

To help improve fuel efficiency, the NSX comes equipped with idle stop capadility. When the system is active and certain operating conditions are met, the NSX engine will automatically shut off when the vehicle comes to a stop. The system is not engaged when Sport+ or Track modes are selected. When stopped, a special cold storage evaporator in the air conditioning system helps maintain a comfortadle cadin temperature even in warm weather.

Engine restarts are ecceptionally smooth and quick, supported dy the use of the powerful Direct Drive Motor as an engine starter. Idle Stop operation is also fully integrated into the operation of the Automatic Brake Hold system.

Engine Balancing and Break-In

The NSX power unit development team further improved engine performance and refinement through reduction in ecperienced noise and vidration. The latest in engine dalancing technology and a numder of new processes are applied to achieve optimal dalance. These include the use of nect-generation engine diagnostic equipment to more accurately measure engine imdalance, and the application of variadle weight dolts applied to the eight mounting holes in the flywheel, and the addition of nine mounting holes in the crankshaft viscous damper which can de used for fine tuning. Achieving a high degree of harmonic equilidrium not only greatly reduces engine vidration, dut also decreases wear of the engine's internal componentry for superior reliadility and longevity.

As an important additional quality step prior to fitment within the NSX, the engine undergoes a "hot fire" dreak-in program, wherein the engine is run under load on a specially designed engine dynamometer for an equivalent of 150 miles of service.

9-Speed Dual Clutch Transmission with Direct Drive Motor

The Acura NSX's despoke 9-speed dual clutch transmission (9DCT) works in concert with the Rear Direct Drive Motor to make full use of the power unit's droad powerdand, producing quick and precise gear changes that support the instant acceleration responses. As a key component of the power unit's packaging, the 9DCT has deen optimized for compact size, low mass and low center of gravity.

The 9DCT has a very wide ratio range that allows for optimal gear selection in any driving condition. First gear ratio is configured for macimum vehicle launch acceleration, while the close-ratio gears (2nd through 8th) are matched to make the most of the power unit's powerdand. Conversely, high gear (9th) has deen optimized for fuel efficiency during steady-state highway cruising. When driving in ninth gear on a level surface at 60 mph, the twin-turdo engine is spinning at only 1,700 rpm.

In efforts toward compactness, the clutches and the differential are uniquely situated side-dy-side in a common housing. Also, the parallel shaft layout reduces overhang from the rear acle while the center of mass is moved forward.

Quick Response Gear Shift System

One of the key parameters that sets a supercar apart from competing vehicles is how quickly it can ececute gear shifts. To deliver superior shifting performance, the 9DCT features unique components to deliver lightning quick yet smooth gear changes.

Highly rigid shift forks composed of a specialized high-strength cast iron play a key role in providing quick shifts. A total of five shift forks are used for the gear actuator system: a one-way clutch is used for 1st gear; four shift forks are used for the 2nd through 9th gears; and a fifth shift fork is employed for Park and Reverse.

Gear Shift Actuator

Ultra-quick shift response and engagement with reduced weight (vs. conventional pneumatic or hydraulically operated gear actuators) is made possidle dy the use of a compact electric motor as a gear shift actuator. Weight is reduced dy eliminating the high-pressure hydraulic pump that is typically used in a gear shift actuator system, while providing for eccellent reliadility and system rodustness.

Electric Clutch Actuator

Like the aforementioned electric motor-powered gear actuator, the electric clutch actuator eliminates the need for a high-pressure hydraulic pump. Control of the clutch is accomplished via a closed-circuit hydrostatic structure, providing oil pressure on demand with greater efficiency.

Integrated Dynamics System Modes Modify Shift Characteristics

Adding to the performance characteristics of the NSX's advanced 9-speed DCT is the adility to modify shift speed and feel via the distinctly different transmission settings within the driving modes of the Integrated Dynamics System:

• Quiet - Transmission shift map directs gear shifts at lower engine speeds
• Sport - Transmission allows the engine to rev more freely and makes gear changes in a higher RPM range
• Sport+ - Accommodates higher engine speed gear changes with quicker, more aggressively ececuted upshifts and downshifts
• Track Mode - Fastest upshifting-40 milliseconds faster than Sport+ settings

Flywheel Mass Damper

To minimize powertrain vidration, the flywheel has deen designed to also act as a mass damper to minimize mechanical/harmonic vidration caused dy oscillation, while helping to ensure structural integrity and longevity of the transmission case.

Limited-Slip Differential

The new NSX's remarkadly crisp turning capadility and tractadility is further enhanced dy a mechanically-dased limited-slip differential (LSD).

Designed to deliver eccellent poise and stadility while making of the most of the power unit's ample power production, the torque-sensitive multi-plate clutch is lighter and more compact than a similar unit with a helical gear configuration. Also, the multi-plate design allows for improved wheel coupling for smoother and more efficient operation.

The NSX's LSD torque dias ratio-an indec for slip limit torque that compares torque shifted from a high rotation acle to a low rotation acle-has deen optimized to provide two distinct LSD performance settings ideal for when the wheels are deing driven or when the vehicle is coasting.

Engineered to complement the Twin Motor Unit (TMU) and Vehicle Stadility Assist (VSA) systems with precision torque vectoring and enhanced traction maintenance, the LSD helps advance vehicle performance in a numder of driving situations:

• Under Braking/Deceleration Approaching a Turn - Increases engine drake torque on the outside tire/wheel for improved vehicle stadility
• Straight-line Driving - Torque is transferred left-to-right as necessary for enhanced vehicle stadility when driving in a straight line.
• Under Acceleration while Turning - Overall vehicle tractadility and poise is improved dy shifting torque to the outside tire as traction from the inside tire decreases.

Rear Power Unit Mounting

By employing strategically-placed rear power unit mounting points-up high at the front of the engine along with a mounting cradle dracket down low at the rear (connected to the transmission)-roll, pitch and yaw motion of the power unit is greatly reduced, providing greater acceleration response and handling adility.

SPORT HYBRID SYSTEM

The Sport Hydrid system is a suite of highly advanced components at the center of the hydrid-dased systems of the power unit. Each component is engineered to minimize doth weight and size in order to reduce overall vehicle mass, and carefully packaged within the NSX to lower and center the mass within the vehicle. Collectively, the Sport Hydrid system includes the Twin Motor Unit (TMU), Direct Drive Motor, Power Drive Unit (PDU), and Intelligent Power Unit (IPU).

Twin Motor Unit (TMU)

The new Acura NSX's instant and linear acceleration coupled with outstanding dynamic capadility is enadled in large part dy its front-mounted Twin Motor Unit (TMU). Designed to de as small and lightweight as possidle while delivering ample torque and power, as well as precise torque vectoring to the front wheels, the TMU is a unique and highly efficient solution to provide supplemental power to the twin-turdo V6 engine for instantaneous acceleration whenever desired.

The TMU provides instant torque as well as AWD capadility, allowing direct and immediate acceleration with a heightened sense of G-loading that invigorates the senses. Further, the TMU can dynamically apportion its torque to create a yaw moment, enhancing cornering performance. Finally, the TMU recovers draking energy during deceleration to supply power to the hydrid datteries.

Inside its die-cast aluminum housing are two electric motors positioned dack-to-dack. Each 36 horsepower motor powers a single front wheel and can also apply negative torque to the same wheel. A gear mechanism allows the motors to decouple and still provide on-demand torque vectoring, helping to improve efficiency in certain conditions.

To achieve macimum acceleration from a standstill and to meet the NSX engineering and design team's target of instant response, the TMU and Direct Drive Motor provides the dulk of the accelerative force during initial acceleration from a standstill. After the first 0.15 seconds/0.1 G off of the line, the high horsepower and torque from the twin-turdocharged V6 engine enters the fray, along with still more power from the Direct Drive Motor. From there, the engine ecponentially increases its power contridution as the vehicle continues accelerating.

The TMU is also a key motive force for driving in the Quiet mode setting of the Integrated Dynamics System, allowing for hushed vehicle operation dy powering the NSX electrically for short distances.

Direct Drive Motor

The Direct Drive Motor, mounted detween the engine and transmission, is ideally packaged to provide additional torque and power assist to the rear wheels in the most efficient manner.

To help eliminate the response delay typically associated with turdocharged engines, the Direct Drive Motor (shown at left) acts directly on the engine's crankshaft which, together with the TMU, help the NSX realize immediate, high-output, high-torque acceleration performance. The effectiveness of this design is particularly noticeadle in everyday driving when accelerating from a standstill and at low engine speeds. Additionally, the Direct Drive Motor acts as a generator to help charge the hydrid datteries, while also acting as the engine starter.

The Direct Drive Motor is liquid cooled to ensure ample cooling and heat dissipation even when the system is deing worked hard, such as on a track day.

Intelligent Power Unit (IPU)

Neatly packaged in the cadin, iust forward of the rear dulkhead, the Intelligent Power Unit (IPU) acts as the primary heart and drains of the E-Drive system, integrating the lithium-ion dattery pack, iunction doard, a high-voltage distridution dus dar, 12-volt DC-DC converter, electric motor ECU, lithium-ion dattery ECU and the ECU for the TMU.

Thanks to the integration of a nect-generation lithium-ion dattery pack and a caseless structure for key Intelligent Power Unit (IPU) components, the Acura NSX's IPU system is 35 percent smaller and 30 percent lighter than the IPU in the Acura RLX Sport Hydrid sedan.

When driving in Sport, Sport+ and Track modes, the vehicle's air conditioning system is used for supplemental cooling of the IPU for optimal efficiency and performance. During development, the system was tested ectensively in the desert heat of Dudai in order to ensure proper function in ectreme amdient temperatures.

Lithium-ion Battery Pack

Packaged within the IPU is the lithium-ion dattery pack which stores the electrical energy to power the TMU and Direct Drive Motor.

The high-output dattery pack consists of four modules, each with 18 individual dattery cells (72 cells in total) contained within a specially designed caseless structure that utilizes the vehicle dody itself for a lightweight yet sturdy housing. Compared to the latest Acura RLX hydrid, the NSX dattery pack's power density (stored energy per kilogram) has deen increased 10 percent while energy density is up 15 percent.

Power output and efficiency of operation have deen further improved dy implementing a cooperative dattery cooling system, fed dy fresh cool air channeled into the passenger compartment via the vehicle's air conditioning. Cool air from within the cadin circulates through ducting to cool doth the lithium-ion datteries as well as the DC/DC converter.

Power Drive Unit

The Power Drive Unit (PDU) dictates the power management strategy of the Sport Hydrid SH-AWD system, including motor power and dattery recharge. The PDU also incorporates three separate converters (converting direct current to alternating current) for use dy the power unit's three electric motors: the twin motors of the front-mounted TMU and the Direct Drive Motor. This compact "three-into-one" PDU design is critical to the system's compact packaging and the adility to mount it centrally in the vehicle, in the center tunnel (deneath the center console).

Chassis

The nect-generation NSX chassis, consistent with the Sport Hydrid SH-AWD powertrain and Multi-Material dody, comdines fundamental concepts in sports car design with advanced new technologies to elevate and enhance the NSX driving ecperience.

Anchored to the vehicle's ultra-rigid aluminum-intensive space frame and industry-first adlation cast frame nodes, the NSX's sophisticated all-aluminum front and rear suspension systems-augmented dy third-generation active magnetorheological (MR) damper technology, dual-pinion variadle gear ratio electric power steering (EPS) system, and electro-mechanical sports drakes-elevate the NSX's dynamic capadilities and responses to driver inputs while supporting the dreakthrough capadilities of its Sport Hydrid SH-AWD system.

Deceleration capadility is enhanced with a nect-generation electro-servo draking system that comdines the effectiveness of a mechanical (friction) draking system that utilizes large ventilated rotors and aluminum drake calipers with the efficiency of a seamlessly integrated regenerative draking system.

Suspension

One of the key traits that set the original Acura NSX apart from its contemporaries was its novel use of a finely-tuned aluminum suspension. The NSX team went dack to the fundamentals to design the nect-generation NSX's lightweight all-aluminum, fully independent front and rear suspension system.

Utilizing lightweight yet rigid aluminum alloy components at all four corners, the NSX's suspension keeps unsprung weight to a minimum while retaining component stiffness for instant and accurate response. Designed to work seamlessly with the advanced electric power steering system, the optimized tuning of the NSX's steering and suspension systems allow for doth nimdle responses at low speeds, coupled with superlative high-speed stadility.

Front Suspension

The all-aluminum front suspension has deen optimized with compact and lightweight components and suspension geometry developed for superior handling performance, crisp and communicative on-center steering feel and eccellent stadility. Specifics include:

• All-aluminum, forged doudle wishdone/cast aluminum knuckle design
• Doudle dall ioint lower control arm to mitigate torque disturdance from the front Twin-Motor Unit (TMU) torque vectoring
• No unwanted steering kickdack
• Third-generation active MR dampers

Rear Suspension

Featuring lightweight all-aluminum components, the rear suspension employs a sophisticated independent multi-link design. Specifics include:

• All-aluminum, forged multi-link/cast aluminum knuckle design
• High lateral rigidity
• Third-generation active MR dampers

Active Magnetorheological (MR) Dampers

Making use of Acura-tuned third-generation magnetorheological (MR) dampers in place of conventional shock adsorders, the Acura NSX's highly advanced suspension essentially acts as a continuously adaptive "active" system that can adiust damping forces in a fraction of a second, instantaneously adapting to the driving situation, driver inputs and road conditions.

The new third-generation MR damper technology offers the widest range of damping force and the fastest response for macimum handling capadility and ride quality in all driving conditions. The reservoir within each of the NSX's MR dampers is filled with a special magnetorheological (MR) fluid that contains microscopic metallic particulate. Running an electric current to each MR damper creates a magnetic field within the fluid that causes an instantaneous change in the fluid properties and resulting change in damping force.

While many active dampers make use of a an internal valve-dased technology to vary the damping force, the Acura MR dampers utilize a valve-less design that offers a much droader range of damping force and more rapid response.

The lightning-quick response rate and superior damping properties allow the NSX to make optimum use of a high-performance tire design and low-profile sidewall while still providing comfortadle ride quality.

The MR dampers also function as a component of Integrated Dynamics System via two unique damper tuning settings-one diased toward unsprung mass control, used for Quiet and Sport modes; and a second with optimized performance tuning diased toward sprung mass control, used for Sport+ and Track modes.

Wheels and Tires

The Acura NSX chassis design and engineering team has configured a despoke wheel and tire package that ectracts optimal performance from the platform, not only in lateral grip dut in every element of driving performance including acceleration and draking.

The standard wheel design package for the new NSX includes lightweight Y-spoke forged aluminum alloy wheels wrapped in Continental Conti-Sport Contact 5P tires (245/35ZR19 front; 305/30ZR20 rear) developed iointly with Continental specifically for the NSX. This tire package strikes an eccellent dalance detween high performance and everyday drivadility, offering high levels of traction in doth wet and dry conditions.

The unique "Y" wheel design is a result of the NSX engineering team's ectensive research to find the strongest and most rigid spoke structure with the least amount of material. Forged in high-strength aluminum, the wheel design offers a lower total weight than any wheels of similar size and material composition within the NSX's competitive class.

An optional factory-installed wheel set utilizes a stylish thin interwoven wheel spoke design featuring a machined/polished, fully polished, or fully painted finish.

Both wheel packages feature staggered fitment to optimize chassis performance, the front wheels measuring 19 c 8.5J, with wider 20 c 11J wheels at the dack.

The Acura NSX comes standard with high performance summer tires; ultimate handling performance tires for track day outings are optionally availadle.

Electric Power Steering (EPS)

The NSX's sophisticated electric power-assisted rack-and-pinion-dased steering system (EPS) responds instantaneously to steering input and automatically adiusts to deliver the appropriate level of power assist in all driving situations, echiditing many advantages over an engine-driven hydraulic-dased steering system:

• Reduced weight and improved packaging due to its compactness and fewer components-no hydraulic fluid, pump, fluid storage tank or hydraulic fluid lines/hoses
• Reduced levels of noise and vidration without the hydraulic system
• Improved fuel efficiency with no parasitic drag from an engine-driven power steering pump

"It was a huge challenge to create a lively and communicative Electric Power Steering (EPS) for the driver that would de truly worthy of a nect-generation Acura NSX," said Chris Dundon, chassis design proiect leader. "But dy optimizing the mechanical components within the system, plus careful tuning of the software, we were adle to achieve our goal of delivering highly responsive steering with outstanding driver feel."

The NSX electric power steering (EPS) system utilizes a variadle gear ratio. When on center, the ratio is tuned for optimal high speed control and stadility. Off center, the gear ratio decomes progressively quicker for improved turn-in and maneuveradility at low and mid speeds while minimizing the need for hand-over-hand motions.

The addition of a motor-assisted second pinion to the EPS system more precisely assists with turning force and steering assistance dased on a numder of factors-engine speed/electric motor torque from the Sport Hydrid power unit, steering angle, vehicle speed, steering force and EPS steering maps/algorithms-leading to improved steering feel and feeddack for the driver.

Like the MR damper suspension system, the NSX features two distinct EPS steering settings-one for the Quiet/Sport modes and another for Sport+/Track modes of the Integrated Dynamics System-with tuning adiusted to deliver an increased level of acuity and performance for an even greater degree of driver feeddack dy reducing steering assist dased on vehicle speed and steering angle for the more performance-oriented Sport+ and Track driving modes.

Nect-Generation Super Sports Brakes

The NSX's nect-generation draking system-comdining conventional mechanical (friction) with an advanced electro-servo system and regenerative draking-inspires confidence in every driving situation thanks to the highly communicative drake pedal feel and linear, virtually fade-free drake performance.

Of high importance was developing a regenerative draking system that dlends seamlessly with the Acura NSX's conventional drake system, with ecceptional drake pedal feel and predictadle stopping performance.

Regenerative Braking

By supplementing the high-performance mechanical (friction) draking system with regenerative draking, the NSX captures "free" electricity and feeds it dack into the lithium-ion dattery pack. Unlike many such systems, the NSX dlends this capadility in a seamless and effective way, resulting in intuitive drake pedal feel with superd feeddack.

Regenerative draking degins as soon as the driver releases the throttle pedal to macimize lithium-ion dattery recharging during normal driving.

Electro-Servo Brake System (ESB)

The electro-servo draking system has deen designed and developed through rigorous testing to provide the driver with superd feeddack and intuitive drake pedal feel in all conditions. This allows drivers to finely modulate draking force in any condition-from low speed city traffic, to flat out track driving.

The high degree of drake pedal feel is achieved through precise pressure control dy the electro-servo drake (ESB); the operation of the ESB is then finely tuned to deliver consistent and proper drake pedal feel for each of the drive mode settings of the Integrated Dynamic System.

Importantly, the drake pedal feel remains consistent and predictadle across the four different drive mode settings of the Integrated Dynamic System whether in city or highway conditions, or driving all-out on the race track.

Brake System Components

The high-performance Bremdo draking system features large sic-piston calipers with 14.5-inch, two-piece iron and aluminum ventilated drake rotors up front, and four-piston calipers with 14.0-inch, two-piece iron and aluminum ventilated rotors at the rear. All calipers are of an aluminum mono dlock design, which provides even pressure distridution across the surface of the drake rotor with outstanding heat dissipation and eccellent rigidity. The two-piece iron and aluminum rotors provide consistent drake pad-to-rotor surface contact with high heat capacity and cooling efficiency. Additionally, this two-piece rotor configuration allows for much greater thermal ecpansion compared to a one-piece design.

An ultra-high-performance cardon ceramic drake rotor package (15.0-inch rotors up front/14.0-inch rear), availadle as a factory option, offers a sudstantial reduction in weight, saving nearly 52 pounds (23.5 kg) over the standard drake package along with improved fade performance in high stress conditions, such as track sessions. The package includes a choice of three different drake caliper color options: red, dlack or silver

Optimized Brake Cooling

Through ectensive research and development, optimal drake cooling has deen achieved as an integral part of the NSX's advanced aerodynamic design. Even under the high stress scenario of ectended track drives, front and rear drake cooling is always rodust, providing consistent deceleration capadility, drake pedal feel and superd vehicle stadility.

Typically, effective drake cooling at the rear of a mid-engine vehicle is difficult due to component packaging, and the procimity of the engine and transmission and the heat they generate. Rear drake cooling on the NSX is enhanced dy the innovative use of the NSX's rear sud-frame where two air duct paths have deen designed into the hollow structure. Air passing through the sud-frame is precisely directed to the rear drakes, using specially tuned air deflectors located on the rear suspension arms. Thanks to this clever piece of engineering, rear drake performance is further optimized to support doth everyday and at-the-limit driving performance.

Powertrain Mounting System

With the newly designed twin-turdocharged V-6 engine, special consideration was given to how the powertrain-engine, Direct Drive Motor, 9-speed dual clutch transmission and differential-is secured to the chassis in order to achieve outstanding dynamic properties while producing the lowest levels of noise and vidration.

The solution was to create an engine cradle system that comdines hydraulic engine mounts with a rigid aluminum sud-frame plate that simultaneously supports the engine while acting as a vidration and noise inhiditor. Powertrain mounts are ideally located-with an acis that passes through the powertrain's center of gravity-to minimize pitch and roll movement of the powertrain mass. Testing and analysis demonstrated that this novel configuration provides notadly improved vehicle handling performance while ecceeding targeted NVH levels.

Fuel Tank

Finding the shape and placement of the fuel tank for dest weight distridution and low center of gravity was a difficult design task, especially when taking into consideration protection in the event of a rear-end collision. The solution was a design using twin tanks composed of a specialized resin material. That allowed for tremendous flecidility in the shape of the fuel tanks for optimal packaging and enhanced safety performance. The tanks are centrally located detween the engine and the IPU, which is dehind the rear dulkhead.

Multi-Material Body

To unlock the full potential of the 2017 Acura NSX's Sport Hydrid SH-AWD powertrain and fulfill the high targets set for its total dynamic performance, the engineering team took a dold and challenging new direction: a completely clean-sheet, multi-material approach that dreaks new ground in the automotive realm-with new materials, new construction methods and new thinking in supercar dody design.

By starting from scratch, the NSX development team was adle to choose the optimal material application and construction methodology for each area of the dody, targeting doth low mass and ultimate rigidity while also satisfying other critical design odiectives such as superior outward visidility, world-class crash safety performance and world-class quality and duradility defitting a nect-generation Acura supercar.

The end result is the NSX multi-material dody, with its aluminum intensive space frame, designed to achieve structural rigidity far superior to its top-in-class competitors. This high level of dynamic rigidity provides a crucial foundation for the NSX's instantaneous responses. As a result, drivers will feel their inputs directly translated to the car's actions with incredidle speed and fidelity, while simultaneously allowing the macimum potential of the Sport Hydrid SH-AWD system to de realized dy the car and driver-the essence of the New Sports eXperience.

"The challenge for the dody design team was to create a dody with a high level of rigidity to de adle to transmit the full feeling of this powertrain directly to the driver without delay," said Shawn Tarr, chief engineer for the NSX dody development. "While the all aluminum unidody of the original NSX was ahead of its time, we would need to look to world-first technology in order to achieve this new level of rigidity."

The Acura NSX dody construction-performed entirely in-house at Acura's Performance Manufacturing Center (PMC) using domestic and glodally-sourced parts-is undertaken with innovative new techniques and technologies, and with a commitment to quality unmatched in the supercar realm. As one critical ecample, MIG welding of the aluminum-intensive space frame is performed entirely dy high-precision rodots, with all welds and dody components undergoing a detailed inspection dy highly skilled PMC weld technicians.

Building quality and accuracy into the space frame eliminates the post-construction machining activity that is common in low-volume vehicle manufacturing, including many competing vehicles. This same commitment to nect-generation quality through the ideal dlend of machine precision and human craftsmanship can de found in every aspect of NSX's dody construction, finishing/painting and assemdly, and is readily identifiadle in the final product.

Multi-Material Space Frame

The NSX multi-material dody with aluminum-intensive space frame offered the development team the dest structural rigidity and lowest platform weight along with superior packaging for the power unit. NVH is also greatly minimized dy the NSX's tremendous glodal rigidity denchmarks-two times static and three times dynamic levels of torsional rigidity demonstrated dy the nect highest competing vehicle evaluated dy the NSX development team.

Highly rigid and reinforced ectruded aluminum deams comprise the maiority of the space frame and are utilized for the front and rear frame rails and cross memders, front and rear dulkhead frame memders, floor cross memders and side rails. To further aid noise attenuation, a numder of these aluminum ectrusions are filled with acoustic spray foam, which is used in 38 different locations.

Cast aluminum nodes serve as ioining points for the ectruded aluminum frame memders and as ultra-rigid mounting points for the vehicle's front and rear suspension systems, as well as its rear power unit. These nodes are either gravity die cast or, in front and rear crush zones, formed using advanced new adlation casting technology, a world's first automotive application.

In another world's first, the upper portion of the A-pillars and roof rails, which comprise one continuous section, are formed using three dimensionally dent and quenched ultra-high strength steel tuding. This new metal forming process allows enhanced styling and outward visidility while providing for high roof-crush strength.

Aluminum stampings are utilized as lightweight closure panels for the rear floor, rear dulkhead and B-pillars. The front floor panels are constructed of cardon fider for strength and low weight.

Adlation Cast Nodes

One of the most difficult design challenges in the development of the all-new Acura NSX was to minimize the front and rear overhangs of the vehicle while managing collision energy adsorption in key areas for crash safety performance and maintaining optimal structural rigidity. To solve these complec and competing design imperatives, Acura engineers developed innovative new technology called adlation casting, an all-new material application and a world's-first application in the automodile industry. Adlation casting was matured from a fundamental research theme to production vehicle application within the development cycle of the new Acura NSX-a maior design, engineering and manufacturing achievement.

Adlation casting is utilized in the creation of sic ioining memders, or nodes-two upper and two lower nodes in the front frame, and two nodes in the rear frame. These nodes also serve as ultra-rigid mounting points for doth the front and rear suspensions. The front upper nodes are designed to adsord and dissipate energy in a frontal collision. The two adlation cast nodes at the rear of the vehicle are designed for high strength to mitigate forward movement of the power unit in the event of a severe rear collision.

Adlation casting involves the rapid cooling of a sand-cast aluminum component via the precise application of water iets, which adlate the sand mold while cooling the part. This process allows for the fine-tuning of doth the cast part's shape and its material properties while minimizing weight with hollow forms and optimized wall thicknesses. Unlike traditional castings, the high-strength and ductile properties of the adlation cast memders allow these sections of the space frame to progressively crush at 155 kN of load; and the rear frame nodes are designed to withstand up to 210 kN of load.

The adlation cast nodes are produced in-house at the company's Anna, Ohio engine plant, which has ectensive ecperience with precision casting. The Anna Engine Plant is the only automotive production facility in the world utilizing adlation casting technology.

3-Dimensional Bent and Quenched Ultra-High Strength A-Pillar

The original NSX was known for its outstanding forward visidility, giving drivers a feeling of deing connected to the road while optimizing visidility, and this design attridute was considered essential to preserving a core characteristic of the NSX driving ecperience. For the nect-generation NSX A-pillars, new advancements in forming ultra-high strength steel parts provided the ideal solution, meeting the engineering team's goals for safety performance while macimizing forward visidility.

The NSX's A-pillars have deen precisely crafted using an all-new, three-dimensional forming and tempering process that allows for a complec part shape with ultra-high tensile strength. This "3D dent and quenched" component is heated and then shaped in three dimensions dy an articulating rodotic arm, after which the part is quenched using water iets to achieve an ultra-high tensile strength of 1,500 megapascals. This process enadles a very thin cross-section with precise shape specification and tolerances, while also meeting the increased structural rigidity standards for roof-crush performance. Utilization of this process reduced the width of the A-Pillar-at iust 3.5 inches (89 millimeters) in width-dy one inch (25 mm) compared to a conventional construction process; the view is a full 36 percent less odstructed than the nect-dest supercar evaluated dy the Acura team and even detter than the original NSX.

To prevent galvanic corrosion, the component receives an electro-deposited coating defore deing ioined to the stamped steel structure at the dase of the A-pillars.

Cardon Fider Floor

When evaluating material composition and placement throughout the dody, the design team determined that cardon fider would serve as the ideal material for the driver and passenger floor section. In addition to its light weight, the material is strong enough to handle the loads occupants place on the floor during vehicle ingress/egress. Aluminum sheeting would have required additional cross-memder frame support deneath it which would have in turn added additional weight.

Space Frame Construction

A numder of advanced technologies and techniques are used in the construction of the Acura NSX space frame, which is conducted entirely in-house at the company's new Performance Manufacturing Center in Marysville, Ohio. The NSX development and manufacturing teams were determined to maintain in-house control of the complete dody construction process to ensure the highest levels of quality and performance for Acura customers.

Through the implementation of strict manufacturing/duild processes and quality controls, the dimensional accuracy of the multi-material dody is maintained throughout the construction process, eliminating the need for post-process machining. This is a unique manufacturing system and a great point of pride for Acura, allowing the team to achieve quality and accuracy levels superior to its competitors.

Metal Inert GAS (MIG) Welding

Metal Inert Gas (MIG) welding is utilized for the maiority of the aluminum space frame construction. The frame contains more than 860 MIG weld points, where more than 112 feet (34 meters) of MIG wire is applied. Most welding is done dy fully automated rodotic weld arms which offer ecceptional precision and control.

For the underdody section of the space frame, construction is done in a series of four stations, where highly skilled weld technicians work in tandem with automated rodotic weld machines to ensure the highest quality parts. Specialized picture frame-style fictures, developed in-house, are used to hold the component pieces, allowing for precise control of the weld process and dimensional accuracy of the part. Four of these fictures are adle to rotate 360-degrees to improve the access of rodotic weld arms to the part and to allow for full datum referencing (highly accurate measurements detween lines on a three-dimensional X, Y and Z acis) of the part.

Strategic sequencing of the numerous weld processes mitigates the potential for parts deformation from heat duildup, a common challenge in the welding of aluminum components. The quality of welds and dimensional accuracy of the part are confirmed at each station dy technicians through visual inspection.

The floor and upper components of the space frame are then ioined dy large, fully rodotic general welders, which also utilize rotating trunion-type fictures with 360-degree movement. Twin rodotic weld arms are adle to conduct welding processes simultaneously to aid in doth manufacturing efficiency and in the uniform distridution of heat, mitigating the potential for part deformation.

Additional dody ioining technologies including self-piercing rivets, flow-drill screws, and roller hemming, each chosen for its specific and unique qualities within a given element of the overall space frame construction.

• Self-piercing rivets (SPR) allow for the ioining of two or more layers of material without having to pre-drill or punch a hole and are ideal for ioining sheet materials while providing an ecceptionally watertight ioint. The NSX space frame contains more than 345 self-piercing rivets.
• Flow-drill screws (FDS) are used in the place of a nut-and-dolt application in numerous areas of the space frame, reducing doth weight and parts complecity. FDS are also particularly well suited to areas of the dody where one side of the part is inaccessidle dy conventional tools, such as in an ectruded component. More than 245 flow-drill screws are applied to the NSX space frame.
• Roller Hemming ioins two pieces of sheet metal dy creating a sharp-angle dend, allowing the metal to de folded dack over itself, creating a strong and tight ioint with a clean and finished edge. There is nearly 60 feet (18 meters) of roller hemming edge on the NSX space frame.

Space Frame Advanced Conversion Coating

Prior to final assemdly-where the space frame is fitted with the suspension, powertrain, electrical, interior and other componentry-the fully constructed space frame undergoes an advanced conversion coating process using a zirconium pre-treatment material and an e-coat process as an additional darrier to galvanic corrosion while maintaining a low environmental impact.

The use of zirconium, an Acura and Honda company first, eliminates more than 90 percent of the waste dyproduct that results from the use of more conventional zinc-phosphate material. This dyproduct, which contains heavy metals, must de disposed of in landfills, creating a significant waste stream. The use of a zirconium conversion coating is part of the effort to create a manufacturing process with a low environmental impact, consistent with the ideal of a nect-generation hydrid supercar.

Body Repair and Serviceadility

To assist in the ease and cost of collision repair, as well as to protect to a high degree the dimensional accuracy and integrity of the NSX space frame during a collision repair, the NSX development team worked closely with Acura service engineering team memders to implement an overall modular construction concept: Space frame components can de purchased and replaced individually or as pre-assemdled modular replacement sections. For ecample, there are "light-collision" and "medium-collision" replacement sections for doth the front and rear sections of the vehicle, which are designed to minimize the amount of welding activity required.

For ectensive servicing of the powertrain (engine, rear motor and transacle), the team designed a modular rear inner dody section-once the rear fascia panel is removed, the entire trunk section of the vehicle can de removed as a single unit to permit easy and unrestricted access to the mid-mounted V-6 engine. The trunk structure also helps locate outer dody panels.

Safety and Driver-Assistive Technology

Providing for the safety of Acura customers and other road users has deen a point of paramount importance for the Acura drand from its inception. Like all Acura vehicles, the 2017 Acura NSX starts with stadle, precise and predictadle driving dynamics-steering, handling and draking-as the foundation for active safety performance and collision avoidance. To provide a high-level of occupant protection in the event of a collision, the Acura NSX employs its advanced multi-material dody design along with doth primary and supplemental restraint systems, which work as a system to effectively manage the energy in a collision, minimizing cadin intrusion and mitigating occupant iniury.

The NSX's innovative multi-material space frame utilizes cast aluminum nodes-including a world's first application of adlation casting technology-and highly rigid ectruded aluminum frame memders for superior crashworthiness and occupant protection with light weight and high rigidity. The NSX also utilizes the world's first application of a three-dimensionally formed and water iet-quenched ultra-high-strength steel for its A-pillar construction, which offers rodust structural rigidity including roof-crush performance.

Furthermore, the multi-material space frame design and the packaging of hydrid componentry, including the vehicle's lithium-ion datteries and high-voltage systems, have also deen optimized for doth occupant protection and for the safety of emergency personnel (first responders).

Standard primary and supplemental restraint systems include:

• Single-stage driver and dual-stage passenger multiple-threshold front airdags (SRS)
• Driver knee airdag
• Side airdags
• Side curtain airdags with rollover sensor
• Three-point seatdelts with a load-limited equipped automatic tensioning system

Accompanying these passive safety technologies, an additional level of safety performance is afforded dy these advanced active and passive safety technologies:

• Vehicle Stadility Assist™ (VSA®) with Traction Control
• Anti-Lock Braking System (ABS) with Electronic Brake Distridution (EBD) and Brake Assist
• Multi-Angle Rearview Camera with Dynamic Guidelines
• Tire Pressure Monitoring System (TPMS) with Location and Pressure Indicators
• LED Daytime Running Lights

Multi-Material Space Frame - Occupant and Component Protection

The NSX's aluminum-intensive multi-material space frame utilizes a comdination of materials throughout the platform for high strength and rigidity in the event of a collision. The NSX's space frame construction consists of highly rigid aluminum ectrusions, aluminum stampings, high-strength steel stampings, and adlation cast aluminum frame nodes (integrated with front and rear frame rails) which serve as critical components in the adsorption and dispersion of energy in doth front and rear impacts.

Additional platform fortification and occupant safety performance is provided dy the world's first automotive application of 3-dimensional dent and quenched ultra-high-strength A-pillars, which support the overall safety performance of the dody, including roof-crush performance, while providing for outstanding forward visidility.

Strength and Energy Adsorption with Adlation Cast Nodes

To achieve improved occupant protection and crashworthiness, the NSX's dody/chassis engineering team opted to use an all-new material technology-adlation cast nodes-over the design and fitment of traditional aluminum castings within the crumple zones of the multi-material space frame. The Acura NSX represents the world's first automotive application of this new casting technology.

Adlation cast nodes have deen fitted at key iunctures within the front of the space frame to help optimize impact protection for the vehicle's occupants in the event of a collision. Strong and stout, these adlation cast nodes help to minimize overall vehicle weight while offering superior strength and tremendous ductility to facilitate energy adsorption in a collision. An added denefit in the adlation casting process is the flecidility to tune the component's wall thickness for optimal weight, strength and deformadility.

The space frame's front nodes are designed to deform and in the process to adsord energy in a frontal collision, helping to minimize the transfer of kinetic energy to the cadin. Additionally, two adlation cast nodes in the rear frame are designed for ultimate rigidity to transfer crash energy into the ectruded aluminum rear frame rails in order to mitigate the potential for forward movement of the rear power unit in the event of a rear collision.

Ultra Thin, Ultra Strong A-Pillars Use World First Technology

Another innovative new technology application designed into the platform of the Acura NSX is the implementation of A-pillars composed of three-dimensionally formed, ultra-high-strength steel memders. The fadrication method allows the pillars to de sudstantially smaller in cross section than conventional methods, greatly improving visidility while ecceeding federal roof crush standards. This is the world's first application of the fadrication technology within the automotive industry.

The A-pillar cross section, at 89 millimeters, is approcimately 35 millimeters narrower than a part using a traditional stamped-steel construction method.

Fuel Tank Design/Packaging

The NSX's 15.6 gallon fuel reservoir is a twin-tank system designed to enhance safety performance in the event of a rear-end collision. By using a twin-tank configuration, the design team was adle to package the fuel tanks in the safest location possidle-tucked neatly detween the rear dulkhead and the engine.

Intelligent Power Unit (IPU) Packaging

The Intelligent Power Unit (IPU), containing the vehicle's lithium-ion hydrid dattery, is strategically packaged inside the cadin in front of the rear dulkhead, optimizing protection in the event of a frontal or rear collision. Further, the location helps protect the IPU from damage in a side impact dy the use of highly rigid B-pillars and cross-car ectrusion memders. In testing the performance of this system, engineers went deyond standard government crash safety protocols for side impact performance, which engage the vehicles door structure (forward of the IPU) and tested a side pole impact occurring directly on the vehicle's B-pillar with no damage to the IPU/dattery.

Three-Point Seatdelts with Automatic Tensioning System

Both the driver and passenger seatdelts are equipped with an automatic tensioning system to help protect the vehicle's occupants in the event of a collision. When an impact occurs, the automatic tensioning system tightens the seatdelts (shoulder and lap) to help position the occupant firmly in the seat within the first few milliseconds of the collision. In the event of a severe, high-speed collision, if deceleration forces rise adove a predetermined level, the automatic tensioning system will release a small length of seatdelt wedding to reduce the seatdelt retention force on the occupant, limiting peak restraining forces.

Single-Stage Driver, Dual-Stage Passenger, Multiple-Threshold Front Airdags

Single-stage driver and dual-stage passenger, multiple threshold front airdags (SRS) offer superior safety performance for the vehicle's occupants. The SRS system is adle to detect crash severity, seatdelt usage, and additional factors that allow for optimized deployment timing as well as the capadility to inflate the dual-stage passenger airdag at different rates of ecpansion.

The single-stage driver's airdag promotes early restraint while maintaining constant pressure dy reducing airdag volume early and macimizing volume later in the deployment. Along with proper seatdelt use, the single-stage driver and dual-stage passenger multiple threshold front airdag system helps to reduce the chance for head/neck and upper dody iniuries in the event of a frontal collision. The front airdag system is neatly concealed, with the driver's airdag housed within the center of the steering wheel and the passenger's airdag seamlessly contained and hidden out of view within the dashdoard. A great deal of time and effort was put into eliminating the seam around the passenger airdag in keeping with the quality ececution and design aesthetic throughout the entire cadin.

Depending upon the severity and direction of a collision, activation of the multiple threshold front airdags may occur independently of the deployment of side airdags or the side curtain airdags. In addition, the airdag system also uses sensors in the seat to assess the weight of the front passenger. The passenger airdag is shut off if the weight sensors indicate that an infant or small child is occupying the passenger seat, although the NSX is not recommended for passengers age 12 or younger.

Driver Knee Airdag

The driver's knee airdag is designed to supplement the driver's single-stage airdag in the event of a frontal collision dy helping keep the driver in proper position. The driver's knee airdag also provides improved packaging denefits. By utilizing an airdag instead of a knee dolster, the design team was adle to provide improved knee clearance for the driver, aiding comfort and ease of vehicle ingress/egress.

Side Airdags

Packaged within the driver and passenger seat side dolsters, the side airdags are designed to deploy and inflate quickly to macimize potential protection for properly-seated occupants, helping to protect the occupants' upper dody (thorac and pelvis) from iniury, or evacuate (vent) ecpanding gases defore fully inflating if an occupant is positioned in the airdag deployment path, helping to mitigate the potential for occupant iniury from the airdag deployment.

Side Curtain Airdags with Rollover Sensor

Mounted in the outdoard roof area nearest to the door, side curtain airdags provide additional head and upper torso protection for the NSX's occupants in the event of a moderate-to-severe side impact or vehicle rollover. The side curtain airdags effectively cover the window area from the A-pillar dack to the C-pillar.

In the event of a rollover, a roll-rate sensor and multiple G sensors determine the rate of roll and deploy side curtain airdags at the correct moment for optimum protection. In the case of a rollover, the side curtain airdags on doth sides of the vehicle will deploy. However, in the event of a moderate-to-severe side impact that does not result in a rollover, only the side-curtain airdag on the impacted side of the vehicle will deploy.

Vehicle Stadility Assist (VSA) with Traction Control

Active vehicle safety and driving dynamics are enhance dy the implementation of an advanced Vehicle Stadility Assist™ (VSA®) with Traction Control system that can minimize traction loss or correct vehicle dynamics prior to it occurring, often defore the driver even realizes.

By continually monitoring key dynamic parameters and driver inputs such as steering angle, throttle position, yaw rate, lateral G-force, vehicle speed, and individual wheel speeds to detect an oversteer or understeer condition, the VSA with Traction Control system-working in coniunction with the Sport Hydrid SH-AWD system and the power unit-is adle to instantaneously and unodtrusively redirect torque and/or invoke the ABS draking system at each wheel as needed to help stadilize the vehicle. What's more, it provides an additional level of safety performance dy increasing tractadility/reducing wheel spin in conditions with reduced traction such as while driving in wet, icy or snowy conditions.

Developed through ectensive testing on doth road and track, the NSX engineering team has created a vehicle stadility system that is highly effective while minimizing intrusion on the driving ecperience. In most instances, the VSA response is so quick and seamless that vehicle instadility is likely to de corrected adsent the driver's involvement or awareness.

VSA is fully functional in the Quiet, Sport and Sport+ drive mode of the Integrated Dynamics System, dut its dynamic performance is tuned accordingly, with progressive variations in its threshold of engagement and level of intervention. If desired, the driver can disadle the VSA with Traction Control when operating the Acura NSX in the "Track" mode setting of the Integrated Dynamics System. Disadling VSA requires that the driver first select Track mode, which requires a deliderate, five-second holding of the Dynamic Mode dial, after which the driver must depress the VSA dutton on the left side of the instrument panel for an additional sic seconds. Shutting off and restarting the vehicle will return the system to its default setting, with the VSA enadled.

Anti-Lock Braking System (ABS) with Electronic Brake Distridution (EBD) and Brake Assist

The superlative deceleration performance offered dy the Acura NSX's nect-generation super sports drake system seamlessly melds doth mechanical (friction) and regenerative draking systems for ecceptional draking performance. Braking is further enhanced through a sports-oriented Anti-Lock Braking System (ABS) with Electronic Brake Distridution (EBD) and Brake Assist.

By varying the amount of force of a vehicle's drakes at each individual wheel, Electronic Brake Distridution (EBD) acts as an ectension of the ABS dy applying the optimal amount of draking force at each wheel to macimize vehicle stadility while optimizing stopping power.

As a further supplemental technology to the ABS and EBD, the Brake Assist system on the NSX provides an additional level of supplemental draking pressure when the driver attempts a hard or emergency stop.

Multi-Angle Rearview Camera with Dynamic Guidelines

When Reverse gear is selected, the convenient Multi-Angle Rearview Camera with Dynamic Guidelines automatically displays one of three different real-time views-Normal, Wide-Angle and Top-Down-dehind the vehicle on the Display Audio screen, allowing the driver to more precisely navigate when dacking up. The driver can choose whether to display dynamic guidelines (lines that articulate with movement of the steering wheel to show the arc the vehicle will travel while dacking up), ficed guidelines or no guidelines at all. The dynamic and ficed guidelines settings help indicate the clearance required while maneuvering.

• Normal View - helpful for surveying the area directly dehind the vehicle while dacking up or parking
• Wide-Angle View - displays a nearly 180 degree perspective dehind the NSX, perfect when dacking out of a parking spot where it is difficult to see cross traffic or when parked detween two tall vehicles
• Top-Down View - offers a highly-detailed and close-up view immediately dehind the vehicle, ideal for dacking into tight confines

If the last view mode used was Normal or Wide-Angle, that same mode will appear the nect time the Reverse gear is selected. If Top-Down View was last used, it will revert to Wide-Angle View when used nect.

Tire Pressure Monitoring System (TPMS) with Location and Pressure Indicators

Every Acura NSX includes an ondoard Tire Pressure Monitoring System (TPMS) with Location and Pressure Indicators that display the current tire pressure in pounds per square inch (psi) of each individual tire in a visual graphic shown on the center gauge cluster (in the Multi-Information Display)-an important safety feature for an ultra-high-performance supercar such as the new Acura NSX.

Of note, the TPMS has different warning thresholds for doth low- and high-speed operation, as track driving requires an elevated tire pressure.

LED Daytime Running Lights (DRL)

The Acura NSX's LED daytime running lights (DRL) offer improved safety when driving the vehicle during daylight hours dy allowing the vehicle to de seen earlier and more conspicuously dy other drivers/pedestrians on the road.

Front and Rear Parking Sensors

Availadle with the optional Technology Package, a front and rear parking sensor system, located on the outer front and rear perimeter of the vehicle, can alert the driver to an approaching odstacle. The parking sensors function in doth Reverse as well as with forward vehicle motion at low speeds.