Acura Details Twin-turbo V6 Powertrain Design On Upcoming 2016 NSX

acura4

At the 2015 SAE World Congress and Exhibition, Acura pulled the wraps off some of the technological advances the all-new 2016 NSX will sport upon its debut.

Most importantly for readers of EngineLabs, the company will make use of what they call the Sport-Hybrid SH-AWD Power Unit. This clean-sheet design offers a longitudinally-mounted twin-turbo V6 engine using a 75-degree V-angle and 3.5-liters of displacement feeding a nine-speed transmission.

In an interesting application of engine management strategies, the SH-AWD Power Unit makes use of both direct gasoline injection and port injection strategies developed from Acura’s racing efforts.

The development process centered around the car as a whole, and the engine components have been engineered to work with the vehicle’s design to achieve stellar performance.

acura3The upcoming NSX features a hybrid powertrain based around the aforementioned twin-turbo V6; dry sump oiling is also present to reduce ground clearance and permit the engine to be positioned as low as possible in the chassis, while adding the benefit of excellent performance when the car is tossed around.

The Hybrid portion of the powertrain uses a front-mounted Twin Motor Unit and a rear-mounted direct-drive electric motor that applies its torque directly to the crankshaft for immediate, zero-delay on-demand power.

There are ten air-cooled heat exchangers on board to cool the engine and hybrid drive units. These have been strategically placed throughout the chassis to provide the most efficient cooling capacity. Three radiators cool the engine; one center-mounted unit that’s tilted 25-degrees forward to maintain the low center of gravity, and two side-mounted units. Intercoolers are located in each side intake to help keep the intake air charger temperatures in check.

“Our goal is to create something altogether new and exciting, something that advances the concept of a next generation supercar in the spirit of the original NSX,” said NSX Chief Engineer and Global Development Leader Ted Klaus. “In order to provide NSX-level value, we needed to push ourselves to experiment with, refine and then realize many new technologies.”

From what we understand, the engine will produce at least 550 horsepower, augmented by the hybrid drive system and nine-speed transmission, the new NSX appears to be a supercar for the 21st century. With the information released today, it certainly appears that the company has achieved their goals. We look forward to seeing the finished product!

(Left) Overhead View of the engine and transmission. (Right) The front Twin Motor Unit.

About the author

Jason Reiss

Jason draws on over 15 years of experience in the automotive publishing industry, and collaborates with many of the industry's movers and shakers to create compelling technical articles and high-quality race coverage.
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