Acura Debuts Limited Production 600hp ACURA NSX Type S HONDA NSX

Acura Debuts Limited Production 600hp ACURA NSX Type S HONDA NSXShow more

Fundamental to the performance of the second-generation Acura NSX, Acura's Sport Hybrid Super Handling All-Wheel Drive™ (SH-AWD®) expands on the torque vectoring capabilities of mechanical SH-AWD® to provide advanced power delivery and unique handling performance.

Designed by Acura, Sport Hybrid SH-AWD® delivers a unique combination of efficiency and performance by applying hybrid technology and using the instantaneous torque of electric motors to improve acceleration, fuel efficiency and handling.

A first-of-its-kind technology, Sport Hybrid SH-AWD® was first showcased on the NSX Concept at the North American International Auto Show (NAIAS) in 2012 and made its production debut in the U.S. on the 2014 Acura RLX Sport Hybrid. Utilizing torque generated by electric motors, Sport Hybrid SH-AWD® is radically different than Acura's mechanical SH-AWD® system. Although both systems feature torque vectoring, the layout, components and operation of Sport Hybrid SH-AWD® are unique and its performance is superior.

Sport Hybrid SH-AWD® System Layout
There are two variations of the Sport Hybrid SH-AWD® system, one with the electric motors mounted on the vehicle's rear axle and another with the electric motors on the front axle. On both the 2014-2020 RLX Sport Hybrid and 2017-2020 MDX Sport Hybrid the system's electric motors were in the back. When its electric motors moved up front on the second-generation NSX, first shown at the 2015 NAIAS, Sport Hybrid SH-AWD® reached its highest performance level yet.

Despite the unique layouts, in both variations of Sport Hybrid SH-AWD® primary power comes from a gasoline engine paired with a dual-clutch transmission (DCT). On RLX and MDX, the transmission incorporates an electric motor, while NSX uses a Direct Drive Motor sandwiched between the engine and transaxle that acts directly on the crankshaft. On the RLX and MDX Sport Hybrid, this combination powers the front axles, while it powers the rear axle of the NSX. When needed, the electric motor provides additional power for an effortless feeling of acceleration, regenerative electricity back to the battery, and under certain circumstances, can even power the car solely on electric power, in conjunction with the electric motors in the Twin Motor Unit.

In all three applications, providing power to the other axle is the Twin Motor Unit (TMU), consisting of a pair of electric motors in a single housing. An Intelligent Power Unit (IPU) contains the lithium-ion battery to supply the TMU with electricity, along with the 12-volt DC/DC converter, electronic control units (ECUs) for the three electric motors, and other components.

Common to all three versions of Sport Hybrid SH-AWD®, the TMU features two 36 horsepower electric motors that receive power from the IPU. Although integrated into a single unit, the TMU's two electric motors operate independently from each other and even from the gasoline engine itself, key to the system's torque-vectoring abilities. A one-way clutch can also combine the output of the electric motors when necessary for maximum use of available traction, such as in poor weather conditions.

On RLX and MDX, with the engine and transmission powering the front axle, the TMU provides additional power, optimized traction, and torque vectoring to the rear wheels. Both used a V6 engine with a 7-speed DCT with an integrated electric motor. For the RLX, the 3.5-liter V6 and electric motors combined for a of 377 total system horsepower, while the MDX with its slightly smaller 3.0-liter V6 generated 321 total system horsepower.

Acura Debuts Limited Production 600hp ACURA NSX Type S HONDA NSX

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