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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.

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.

Honda recalls 2.7 million vehicles for new air bag inflator defect

WASHINGTON — Honda said on Tuesday it will recall 2.7 million older U.S. vehicles in North America for potentially defective air bag inflators. The defect involves a different type of Takata inflator than those that have prompted the largest-ever auto safety recalls worldwide covering more than 42 million U.S. vehicles by 19 automakers with Takata air bag inflators. The new recall covers Honda and Acura automobiles from the 1996 through 2003 model years. Honda said it is aware of one field rupture of an inflator in the new recall campaign — a 2012 crash in Texas that resulted in an injury — and two in junkyards in Japan. The campaign covers 2.4 million U.S. vehicles and 300,000 in Canada, Honda said, adding that it has not determined recall numbers for other countries. Takata issued a new defect notice in November for inflators from four automakers, including Honda. Honda said all three vehicles "potentially were exposed to unusually high amounts of moisture prior to the rupture events." Honda said the recalls cover driver front airbag inflators manufactured with non-azide propellant and said "all inspections and repairs will begin in approximately one year, as replacement parts from alternative suppliers are not yet available." Honda said it "regrets any inconvenience or distress that this situation may cause to our customers as we seek to resolve this situation. Honda believes that the risk of improper airbag deployment in its vehicles remains very low at this time, but we cannot absolutely guarantee the performance of any recalled part." Related Video: