MotorTrend Looks at the 2015 Acura NSX

From the April, 2012 issue of Motor Trend
By Frank Markus
Photos Wesley Allison
Acura's 1991 NSX put an end to the era when sexy supercars could be unreliable, ill-handling, ergonomic disasters. The all-aluminum mid-engine marvel delivered laser-sharp handling and high-revving acceleration suffused with Japanese quality, while advancing the state of the production-car art with firsts like four-channel ABS, titanium con-rods, and electric power steering.

Since NSX production ended in 2005, the world has eagerly awaited its replacement. A front-engine V-10 layout was proposed and developed by Acura Design as the Advanced Sports Car Concept. Everyone involved agreed that it was cool, but it wasn't an NSX. The car you see here is.

Expected by 2015, the new NSX will employ a mid-mounted V-6, complete with titanium connecting rods coupled to a wet twin-clutch seven-speed transmission and hybridized with an electric motor driving the rear wheels. Two more electric motors will spin the front wheels, providing torque-vectoring under acceleration and braking to help the NSX turn into corners better under all conditions. This Sports Hybrid AWD system is purported to deliver big-V-8 performance with "better-than-four-cylinder" fuel economy (let's assume they're talking big turbo fours there).

We asked Honda's global CEO Takanabu Ito (who started his career as an engineer working on the NSX's aluminum monocoque structure) whether he felt it was important that the next NSX still be made of aluminum. He replied what was more important was that the engineering team face as great a challenge as his did as they work to offset the new car's hybrid drivetrain mass. When asked whether he'd established a weight-to-power target for the team, his coy answer was, "I hope it is better than the first car's."

But if we assume that here again he expects to challenge his engineers to an equal extent, and we know that the first NSX matched Ferrari's 348 with 11 lb/horsepower, we can expect the 2015 car to at least match the current 458 Italia (and Lamborghini Gallardo) with around 6 lb/hp.

The sexy, show-stopping shape features Acura's softening Keen Edge design. Dimensionally, it measures 3.7 inches shorter in length on a 1.8-inch longer wheelbase, so overhangs are cropped. It's also 3.3 inches wider and 0.4 inch lower than the 2005 NSX. The concept rides on 255/35-19 front and 275/30-20 rear rubber. The low-profile headlamps are LED-based, and while there is no interior in the concept, design chief Jon Ikedo presumes the battery will package in the center tunnel, luggage compartments will be fitted fore and aft, and the fuel tank will slot in just ahead of the engine as before to preserve weight distribution as the fuel level drops. With production slated for "within three years," the shape has yet to undergo extensive computer or physical testing. Ikedo says early scale-model clays are performing well in the wind tunnel, but cautions that crash development is likely to grow the car somewhat. That development work, by the way, is all happening in the USA, and the car will be built in Ohio.

Acura claims the next NSX will represent the "ultimate expression of man-machine synergy," with driver and car working in unison, rather than the driver being taken for a ride by a highly robotized car.

Indeed a three-motor, mid-engine supercar sounds like the ideal halo car for a brand attempting to distinguish itself as delivering luxury and performance without waste or excess. It may even shake up the supercar-world order again. We just hope Ito's engineers overcome their biggest challenge: programming those electronics to deliver realistic, not robotic, road feel.

New Tech

The NSX won't be first with a hybridized twin-clutch tranny, but, unlike the Jetta Hybrid's, its electric motor connects to (we're guessing the odd) gear shaft instead of the input shaft. By releasing both clutches, more energy can be regenerated with no engine braking effect, and by connecting the motor to the (odd or even) gear with the most advantageous ratio. Under acceleration, power is transmitted through a preselected odd gear even when an even gear is in use.

2015 ACURA NSX
BASE PRICE $130,000*
VEHICLE LAYOUT Mid-engine, AWD, 2-pass, 2-door coupe
ENGINE 3.7L DOHC 24-valve V-6 + 2 front and 1 rear electric motors; 480 hp comb*
TRANSMISSION 7-speed twin-cl auto
CURB WEIGHT 3100 lb*
WHEELBASE 101.4 in
LENGTH X WIDTH X HEIGHT 170.5 x 74.6 x 45.7 in
0-60 MPH 3.0 sec*
EPA CITY/HWY FUEL ECON Not yet rated
ON SALE IN U.S. 2015

Source;

http://www.motortrend.com/future/future_vehicles/1204_2015_acura_nsx/

1991 Acura NSX: Suspension Walkaround

Here's a great artical on a truely legendary car....
by Dan Edmunds

At long last the 1991 Acura NSX suspension walkaround you've been clamoring for is finally here. Turns out there's lots of cool stuff to see under there, even if this car is old enough to drink and play blackjack.

Let's not waste any more time with preliminaries. The NSX is racked on our 2-post Rotary lift and fully exposed.

Here's the full article;
http://blogs.insideline.com/roadtests/2012/02/1991-acura-nsx-suspension-walkaround.html

Acura NSX Successor Taking Shape

Ahead-of-Its-Time Honda Dualnote Concept Provides Powertrain Clues
By Peter Lyon of www.motortrend.com

At Honda's recent shareholders' meeting in Tokyo, a middle-aged man stood up during the Q&A session and asked whether the company was going to reinterpret a small, sporty car like the Beat for the 21st century. "While I am still young enough to enjoy sports driving, I'd like to drive something compact and sporty, something like an updated Beat. What are the chances of that?" he said poignantly.

Honda CEO Takanobu Ito took the microphone and replied without hesitation. "We are currently developing a successor to the Beat, a car that anyone can easily have fun with. Expect to see it in showrooms within the next few years." The comment dominated the headlines the next day. Strangely, Ito's subsequent utterance didn't get nearly as much play, but potentially was much more significant to those pining away for a road-going Honda supercar: "In addition to the Beat successor, we are also making significant progress with plans for an exotic sports car."

Just six months ago, Ito told a media gathering that Honda felt compelled to re-launch a high-performance sports car like the NSX, but he didn't go so far as to say it was definitely happening. But it was the first time Ito had actually uttered the telling phrase "making significant progress with plans to..." build a successor.

To get a clearer idea of exactly what Honda has planned, a source close to Honda suggested we go back a decade and re-examine the Dualnote, a gasoline-hybrid, all-wheel-drive concept car first shown way back at the 2001 Tokyo Motor Show. Powered by a midship-mounted (Japanese-speak for mid-engined) 3.5-liter V-6 with Honda's IMA hybrid system, the four-door concept's front wheels were propelled by in-wheel electric motors, while the rears were driven by the engine, a combination that reportedly generated more than 400 horsepower. The Dualnote was so advanced back then that all Honda did was adapt the drive system (minus the in-wheel electric motors) to the soon-to-be-launched Legend, thus creating the SH-AWD system.

Ten years down the track, Honda is still perfecting that original AWD hardware, which includes the large-capacity engine with hybrid combination, motors that propel the fronts, and V-6-driven rears. Another insider tells us the car's target specifications have already been decided. "Honda wants to build a supercar that breaks the mold while creating a totally new technological package," he said. So what we are going to see is a further development of that 2001 concept, but adapted for today's fuel economy and emissions expectations.

It's not a car that rests on its engine-generated power alone. The extra herbs produced by the front-mounted electric motors will make the next-generation NSX a very quick car. "It has to be fast to live up to the expectations of a future NSX, right!?" pleads our insider. He went onto say that a record Nurburgring lap time is not Honda's target. "But be rest assured, this car will be the top in its class, and the powerful engine-motor combination will achieve that result."

Our sources inform us that Honda is working on a VTEC V-6 engine displacing 3.5 to 3.7 liters that boasts a cylinder head with an integrated exhaust manifold and valveless throttle. Obviously it will be of the Atkinson cycle variety. The two-motor setup will be powered by lithium-ion batteries and employ a plug-in recharge system to minimize battery weight.

The original Dualnote system incorporated an engine that drove an on-board generator powering the motors, a system considered inherently inefficient. By fitting an all-new continuous current motor to the new concept, engineers have been able to minimize electricity consumption while at the same time creating a gutsy torque-generating, high-revving system. "This system will be the secret to the NSX successor's incredible pace," suggests our source.

One other critical aspect of the new car will be its weight-saving aluminum body, a process carried over from the first NSX. And the final part of the package is price. Our sources tell us that Honda wants to bring the car to the U.S. as an Acura by 2014 for under $100,000 -- a sticker price designed to rival that of the Nissan GT-R.

Source;
http://www.motortrend.com/future/future_vehicles/1110_acura_nsx_successor_taking_shape/