2017 Honda NSX Valencia Red Drive and Design.
Honda NSX new Sport Hybrid SH-AWD is the most sophisticated and advanced power unit in the supercar segment
Twin-turbocharged V6 engine produces 507 PS
Nine-speed Dual Clutch Transmission with Direct Drive Motor
Front-mounted Twin Motor Unit contributes to almost instantaneous acceleration and superior dynamics
The exceptional dynamic capabilities of the new NSX are enabled by its revolutionary Sport Hybrid Super Handling All-Wheel Drive (SH-AWD) power unit, the first such system of its kind in a supercar to utilise electric motor torque in combination with engine power, to enhance every element of dynamic performance – acceleration, handling and braking.
At the heart of the new Sport Hybrid power unit is a bespoke, mid-mounted twin-turbocharged V6 engine, paired with an all-new nine-speed dual clutch transmission (9DCT) and Direct Drive Motor that supplements the engine with instant torque response. 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 Hybrid power unit offers exceptional horsepower and torque with a broad powerband for tremendous throttle response and acceleration. Total system peak output is 581 PS: 507 PS from the gasoline engine and 74 PS from the front TMU and Direct Drive Motor.
By creating a propulsion system that makes use of both mechanical and hybrid-electric components rather than just a conventional gasoline-powered internal combustion engine, the NSX’s power unit is able to create constant and linear acceleration at any point in the power band, at any speed with instant response.
At initial launch from a standstill, the front-mounted Twin Motor Unit (TMU) and the direct drive electric motor are able to immediately supplement power production from the twin-turbocharged V6 engine, using the abundant and instantaneous torque production that is an inherent characteristic of electric motors. Conversely, once the vehicle has reached a steady cruising speed, the twin-turbocharged V6 engine becomes the primary motive force for the vehicle, with the three electric motors providing supplementary power and yaw control when necessary.
While the primary focus in the development of the all-new NSX’s clean-sheet power unit was peak performance, efficiency and environmental sustainability were also important design characteristics. Therefore, the all-new NSX meets ultra-low emissions vehicle (ULEV) requirements.
Featuring a wide V-angle of 75 degrees for a low centre of gravity, the NSX’s twin-turbocharged V6 engine achieves an ideal balance between power production, compactness and reduced mass. With a displacement of 3.5 litres, it combines both direct and port fuel injection, along with Dual Variable Valve Timing Control (Dual VTC) to deliver optimal camshaft phasing. Dual VTC allows for precision combustion control at all engine speeds while simultaneously achieving high power output and uncompromised performance at high engine speeds.
Other key engine design elements include a sand-cast engine block, lightweight and compact cylinder heads, and plasma transferred wire arc thermal spray-coated cylinder walls (for higher thermal efficiency with reduced weight and compactness). A dry sump lubrication system significantly reduces the engine’s centre of gravity while simultaneously ensuring consistent engine lubrication under high cornering load conditions.
The NSX has a compact valve train utilising swing arm-type valve actuators, which allows for a more compact head structure and reduces by 22 percent the inertial weight of the valve train compared to a rocker arm-type design. The innovative design was derived from Honda racing engines. Intake and exhaust variable camshaft timing (VTC) is deployed to provide an excellent balance of high power, torque, fuel efficiency, and emissions.
The engine also features for the first time on a Honda a three-piece water jacket for the engine block and heads, including water jackets between the cylinder bores, a triple radiator system and a viscous damper mounted to the crankshaft.
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Post time: Jun-12-2017