1991 Nissan 300zx 2+2 Coupe 2-door 3.0l No Reserve on 2040-cars

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Infiniti's new VC-T changes the rules of small turbocharged engines

The upcoming Infiniti QX50 crossover does not get our pulse racing, no matter how shapely the QX Sport Inspiration concept that previews it may be. No midsize SUV does, to be fair. But it has something special under the hood – the world's first production variable-compression-ratio engine. That means the QX50's 2.0-liter turbo four, which makes 268 horsepower and 288 pound-feet of torque, will have up to 27 percent better fuel economy. Here's how it works. The trend of moving to smaller, turbocharged engines carries with it one big falsehood. Under low load when the turbo isn't needed, these engines are less efficient than an equivalent engine without a turbo because of the low compression ratio the turbo requires. That is, if you never need the extra power, you're wasting fuel. Turbocharged (and supercharged) engines use a lower compression ratio to prevent detonation. When you force extra air in a cylinder and mix it with fuel, it's more likely to prematurely go boom. Lowering the compression ratio prevents this problem, but it's less efficient. Infiniti's VC-T promises the best of both worlds, with a compression ratio that ranges from 8.0:1 for high-power turbo needs to a 14.0:1 ratio for fuel-sipping efficiency. At its heart the VC-T engine is a simple idea, but it's complicated to explain. Consider yourself warned. The photo below from Infiniti serves as a good visual overview. For the truly nerdy, this patent application covers the mechanical concept. Instead of having the pistons connected to the crankshaft, Infiniti's engine has a pivot arm with a connection on each end. One end connects to the piston, the other connects to a second lower shaft, which is controlled by an actuator arm. At any given time the engine's pistons move up and down according to the lobes on the crankshaft. But the actuator arm can change the angle of the pivot arm up and down. That is, the pistons still move in the same motion with the same stroke, but phase the entire stroke up or down. Move the pivot up and there's less room at the top, which means a higher compression ratio. Move the pivot down and the compression ratio goes down, too. As an added bonus, the lower shaft eliminates the need for counter-rotating balance shafts. Infiniti says this system works constantly and can vary the compression ratio to any number between 8:1 and 14:1. It also uses electronic variable valve timing on the intake valves to switch into Atkinson-cycle combustion for greater efficiency.

Recharge Wrap-up: Nissan "religious" about zero-emissions, Tesla crashes at dealership, Formula E on-board video

Nissan is pretty darn serious about being king of the EV industry. Just see what Chief Planning Officer Andy Palmer has to say at the launch of the e-NV200: "When it comes to zero emissions, we're absolutely religious. We'll be the absolute, No. 1 leader in zero emissions. No doubt. That's our positioning." Bold words, to be sure. Toyota, on the other hand, ended its collaboration with Tesla (whom Nissan mustn't forget about in its quest to reign supreme in the EV world) to build the RAV4 EV, and will focus instead on hybrids and testing the waters with hydrogen cars. Says Jim Lentz, CEO of Toyota North America, "I would rather invest my dollars in fuel cell development than in another 2,500 EVs." Read more at Automotive News or Autoweek. To celebrate 25 years of TDI technology, Audi is releasing the A7 Sportback 3.0 TDI Competition special edition in Europe. The Competition uses Audi's biturbocharged, 3.0-liter diesel engine boosted to 326 horsepower, giving the car a 0-62 time of 5.1 seconds. It comes with the S line sport package and is offered in four exterior colors: Daytona Gray, Misano Red, Nardo Gray and Sepang Blue. The interior is black leather, with the option of Misano Red or Agate Gray contrast stitching. The Competition edition will go on sale in August starting at ˆ72,000 (about $97,700). Audi's first Turbocharged Direct Injection engine debuted at the 1989 Frankfurt Motor Show in the Audi 100 2.5 TDI. See the press release down below for more details. There was another Tesla Model S crash recently, this one at the Tesla Store. The driver apparently crashed the freshly purchased car into the Tesla sign before even making it off the lot. According to Reddit user s1lentway, who was at the Tesla Store in Fremont, California when it happened, "We believe this is someone who just got their car. They must have been driving it for less than a minute and lost control, crashing right into the sign missing the showroom glass windows only by a few inches." Wrecked Exotics suggests the driver hit the accelerator instead of the brake pedal. Probably the best comment in the Reddit post: "Edison strikes again." See the original post at Reddit for more corny jokes, speculation and similar stories from other users. Take a lap in a Formula E racecar. The video below offers up the sights and sounds of a hot, wet lap in the open-cockpit, all-electric Spark-Renault SRT_01E.

Nismo mashes it up with Sentra 370Z and Altima GT-R

Nismo was a tuning division once content (or required) to restrict itself to just one or two models at a time, but these days Nissan is taking the gloves off and allowing its motorsport department to tune just about everything's it's got.
Now in its thirtieth year, Nismo tunes versions of the GT-R, 370Z, Juke and Versa Note, and will soon be working its magic on the Sentra and European-market Qashqai and Pulsar. And that's not even taking into account its considerable racing programs. At this rate, Nismo is going to run out of vehicles to tune pretty quickly, so what has it done? Invent new ones!
No, we're afraid that Nissan is not letting its Nismo division produce its own stand-alone product, but it has released two sets of amusing renderings combining two vehicles into one. One depicts a GT-R crossed with a Teana sedan (better known in these parts at the Altima), while the other crosses a Sentra with a 370Z.