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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.

Watch this mobility scooter drag race a Nissan Skyline with surprising results

Okay, so we may not be talking about a classic, all-conquering Nissan Skyline GT-R here. But the sub-Godzilla-trim Nissan Skyline GTS-T is still a car, after all. And, as a car, if someone asked you to lay a bet on it versus a mobility scooter (Hoveround, Rascal, you know the type) in a drag race, you'd probably take that action.
Unless, of course, that drag race were happening on YouTube, in which case you'd put your money away and open up your laptop. On the Internet it's best to never bet against the wild underdog.
We don't mean to spoil the following video for you, but come on. When you saw Skyline vs. Scooter in that headline, you had a pretty good idea of what was to come, didn't you. Needless to say, mobility scooters fitted with Suzuki GSX-600F engines are pretty quick. Strap in and scroll down.

Recharge Wrap-up: Toyota battery breakthrough, PSA's millionth BlueHDi diesel

Scientists at Toyota have developed battery technology that allows for higher energy density. Using material from hydrogen storage, researchers at the Toyota Research Institute of North America (TRINA) in beautiful Ann Arbor, Michigan have created an electrolyte that works well with a magnesium metal anode. Besides improving energy density for smaller, more powerful batteries, magnesium is also more stable than lithium, making it a safer alternative. Rather than guarding their secret, Toyota is sharing details of this breakthrough in order to advance the technology in hopes of an earlier mass deployment of magnesium batteries. See the video above, and read more in the press release below. Farmdrop – a sort of online farmer's market in the UK – is looking for help naming its electric delivery "vanimals." The Nissan e-NV200 vans are painted and decorated to look like cows, pigs, and chickens. While three of the vans have already been named, fans can suggest their own clever ideas for the rest of the fleet on social media. Those whose names are selected will win a month's worth of shopping on Farmdrop. Cary McCarface, anyone? Read more at the company's website. PSA has built its millionth Euro 6 BlueHDi diesel engine. The automaker builds two diesel engines – a 1.6-liter and a 2.0-liter – at its plant in Tremery, France at a rate of 7,000 engines a day. BlueHDi technology uses three different emissions control mechanisms to filter pollutants out of diesel exhaust, including an oxygen catalyst, an additive filter to remove particulate matter, and a Selective Catalytic Reduction system to reduce NOx. BlueHDi is used in all new Peugeot, Citroen, and DS Euro 6 diesel vehicles. Read more at Green Car Congress. Charging Ahead Toyota Scientists Make Breakthrough on Safer, Smarter Batteries May 04, 2016 ANN ARBOR, Mich. (May 4, 2016) -- For anyone (i.e. everyone) who's ever panicked when their mobile device chirped, "low battery," the future could be far less stressful, thanks to the advanced battery research of scientists at the Toyota Research Institute of North America (TRINA). A new breakthrough involving magnesium batteries may soon open the doors for smaller, longer-lasting batteries for everything from cars to cell phones. What's the Big Deal with Magnesium? Magnesium metal has long been theorized as a much safer and more energy-dense alternative to current lithium battery technology.