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Nissan and Infiniti to get 6 EVs within 5 years

Nissan will get four new electric-powered vehicles, while its luxury division Infiniti will get two over the next five years, a top executive told Automotive News. The six EVs will make up Nissan and Infiniti's share of the 12 electric vehicles planned for Renault-Nissan-Mitsubishi by 2022, though there's no word on how the numbers break down for those other brands. Infiniti last month announced plans for its first all-electric vehicle in 2021, plus new "e-Power" series hybrids like the ones it has introduced in other markets. But the six vehicles divulged by Toshihiro Hirai, Nissan's corporate vice president for powertrain and EV engineering, reportedly include only full battery-electrics and not hybrids. The only full-electric currently offered by either brand in the U.S. is the Nissan Leaf, which was just updated for 2018. Nissan-Renault CEO Carlos Ghosn has been a consistent supporter of electric vehicles, and he has said EVs need greater government incentives, lower development costs and a greater recognition among the buying public of the risks of climate change in order to gain traction among consumers. Last summer, Nissan-Renault announced plans to build electric vehicles in China in a new venture with Dongfeng Motor to meet EV quotas. They'll use a subcompact crossover platform from its own vehicle family.Related Video:

Infiniti QX70 drops V8 for 2015, holds line on pricing

QX70 was the only application for the 5.0L, making it a tough sell in the boardroom.
It was always easy to chuckle a bit at Infiniti's branding of its FX crossover as a "bionic cheetah" - until you drove the thing. It was something of a revelation when it came on the market in late 2002 - certainly visually, but also in terms of performance, particularly in V8 guise. The Porsche Cayenne burst on the scene at the same time, and between the two of them, they vividly illustrated that the idea of a performance utility vehicle wasn't the oxymoron it first appeared to be.

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.