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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: Fisker takes apart Finland assembly, Nissan Leaf sales in Europe expected to grow 25%

The Fisker Karma's Uusikaupunki, Finland production lines are being dismantled. The lines, operated by Valmet Automotive in the same plant that assembles the Mercedes-Benz A-Class, have been idle since Fisker's money woes brought them to a halt in 2012. Fisker, which has since been purchased by Wanxiang, and Valmet are still in talks over future collaboration. Read more at YLE. Nissan expects a double-digit percentage growth in Leaf sales in Europe in 2015. Nissan Europe's Jean-Pierre Diernaz puts that number at around 25 percent over 2014's record sales. Part of this is due to much lower prices than earlier model years, thanks to government incentives and lower production costs than earlier model years. Diernaz also said that the e-NV200 van will make up about 20 percent of Nissan's EV sales in Europe. Read more at Automotive News Europe. EV drivers pay less on average in taxes than gasoline vehicle drivers in every state except Virginia. Some states impose extra taxes and registration fees for EVs to make up for lost revenue from fuel taxes, but EV drivers still come out ahead, even when compared to high-mileage cars like the Toyota Prius. Even in Wisconsin - which might follow Colorado, Nebraska, North Carolina, Virginia and Washington in added EV fees - those who drive electric should fare better. Virginia, however, charges EV drivers an extra $114 annually across two added fees, while gas drivers would only get dinged about $35.10 in gas taxes in a 50-mpg car. Read more at Green Car Reports. Two hydrogen-powered electric bus prototypes will be deployed on a trial basis Hamburg, Germany. The Solaris articulated electric buses use fuel cell range extenders from Ballard. The buses were unveiled on December 18, and will go into operation in January 2015. The German government is funding the trial, and Hamburg aims to cease the purchase of diesel buses by 2020. The new-generation fuel cell system in the two Hamburg buses improve upon Ballard's previous design by using fewer parts and exhibiting less parasitic power loss from the integrated air compressor and coolant pump. Read more at Ballard's website. Featured Gallery 2012 Fisker Karma: Second Drive View 30 Photos Related Gallery 2013 Nissan Leaf View 55 Photos News Source: YLE, Automotive News Europe, Green Car Reports, BallardImage Credit: Copyright 2014 Drew Phillips / AOL Green Fisker Nissan Alternative Fuels Transportation Alternatives Electric Hydrogen Cars recharge wrapup

So, how do you actually pronounce that automaker's name?

You probably have that friend who always says Porsche wrong, or maybe it's someone who keeps reminding you it's actually two syllables. Whichever side of the pronunciation debate you fall on, you'll find someone to root for in the video above. And before you ask, this was all the video team's idea. So don't get mad at me for being the voice of reason. BMW Chevrolet Hyundai Nissan Rolls-Royce Videos Original Video nissan qashqai