2009 Acura Tech Pkg on 2040-cars

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2017 Acura NSX First Drive [w/video]

The 2017 Acura NSX is heavy. It outweighs the original 1990 car by more than 800 pounds and is over 300 heavier than a Chevrolet Corvette Z06. The NSX is insanely complicated, with an assist motor between the twin-turbo V6 and the nine-speed dual-clutch transmission, plus two torque-vectoring electric motors at the front axle. And the NSX is expensive. It will probably cost $170,000 when it goes on sale in Spring 2016. Commence trolling. If you hadn't guessed, the new NSX isn't much like the first generation built from 1990 to 2005. But the two cars share a common philosophy. Both are Acura's interpretation of what a modern, everyday supercar should be. Based on the new car, things have changed a lot in the last 25 years. For project leader Ted Klaus, the original NSX was one reason he started working at Honda. At the 1990 Detroit Auto Show, "I sat watching that car for a while. A really long while. Even just looking at that car I could see the deep, advanced, functional beauty." The most difficult thing with the new NSX, says Klaus, is to explain how a heavier and more complicated car can outperform other cars in a way that feels like traditional lightweighting. View 33 Photos This is not the way the NSX was supposed to be at first. The original plan was a transverse-mounted, naturally aspirated engine just like the first car. The NSX has a giant bag of neat tricks, but to understand them takes a lengthy explanation that starts with the Sport Hybrid SH-AWD powertrain. Behind the cockpit is a 75-degree, twin-turbocharged, 3.5-liter V6, made specifically for the NSX. On its own it puts out 500 horsepower and 406 pound-feet of torque. The rest of Honda's lineup uses a 60-degree layout, but the wider angle here lowers the center of gravity. Behind the engine is the rear assist motor, with 47 hp and 100 lb-ft. Hanging off the rear of that is the nine-speed dual-clutch, developed in-house. In between the front wheels is the Twin Motor Unit (TMU), a pair of 36-hp, 54-lb-ft electric motors that add or subtract forces to their respective sides. The Power Drive unit manages the electronics, and sits in the center spine of the car like a traditional prop shaft. A lithium-ion battery pack is behind the pair of seats, on the cold side of the firewall. Total system output is 573 hp and 476 lb-ft. This is not the way the NSX was supposed to be at first. The original plan was a transverse-mounted, naturally aspirated engine just like the first car.

2014 Acura RLX gets trick hybrid all-wheel drive system for LA

Acura has endured a year of mixed reviews and middling sales for its new RLX flagship. Meanwhile, the Japanese automaker has been readying what may be the very best version of the car for its debut. Now the wait is almost over, as Acura will show its 2014 RLX Sport Hybrid SH-AWD at this year's LA Auto Show.
When it comes to dealerships in the spring of 2014, the RLX Hybrid will be the most powerful production car Acura has ever sold. The combination of a 3.5-liter V6 and three electric motors - a 35-kilowatt motor pushing torque to the front wheels and two 27-kW units feeding the rears - creates a total system output of 377 horsepower.
Those rear-end electric motors do more than just add power, they also drive the rear wheels without a traditional rear drive shaft and differential. This newest iteration of the Super Handling-All Wheel Drive calls upon the two rear motors to both drive and brake the rear wheels, vectoring torque in cornering situations for additional grip. All three electric motors make use of regenerative braking to feed electricity back into the system's 260-volt lithium-ion battery pack.

2020 Acura NSX Suspension Deep Dive

The Acura NSX has been a special car as long as I’ve been in the business. The first one came out in 1990, the same year I started my career in automotive engineering. I vividly remember driving one briefly back then when we brought one in for benchmarking. I'd drive it again 22 years later when my previous employer bought a used 1991 example for a long-term test. Reader interest was sky-high and the car was still gorgeous, but the march of time and automotive engineering had clearly left it behind. Then, in 2016, a second-generation NSX emerged, and it was packed with bleeding-edge thinking. It has a 3.5-liter twin-turbo V6, but this new NSX is a hybrid with an electric motor-generator sandwiched between the engine and its nine-speed DCT transmission. Two more electric motors – one for each wheel – power the front axle. There they can add traction, regenerate electricity under braking and dole out hyper-accurate levels of torque vectoring. The carÂ’s tire package was changed from Continental SportContact 5 to SportContact 6 tires in 2019, and numerous suspension re-tuning tweaks came along with them. The result is a lively and well-balanced car that is relentless when driven hard and a pussycat around town. LetÂ’s see what theyÂ’ve got going on under there.   At first glance the 2020 Acura NSX appears to have dual wishbone front suspension. But we canÂ’t tell for sure because that big two-piece brake rotor is in the way. The coil-over shock looks obvious, but a few odd details are apparent even from here.   This view also seems to indicate double wishbone suspension. But the pivot axis (green arrow) between the upper and lower ball joints looks wrong – itÂ’s far too vertical. WeÂ’re missing something. But I would be remiss if I failed to point out a few other things before we moved on. For one, the front drive axle confirms this to be an all-wheel-drive machine. Second, the forged aluminum damper mounting fork (yellow) that envelops the axle is mounted to the lower arm about 75% out from the armÂ’s inner pivot. The spring and damper motion ratio would be 0.75-to-1 relative to wheel movement, with a tiny reduction due to its lean angle. Lastly, just look at the huge cast aluminum upright (white). Beautiful. Normally these are called hub carriers or steering knuckles, and I use the terms interchangeably. But the motorsports-derived term upright is normally applied when the piece is tall and, well, upright like this one.   This explains everything.