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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.

Japanese automakers kick in $800k for new charging-station company

Cynics may say that gathering $800,000 (total) from four of Japan's largest automakers is merely a rounding error. Still, Toyota, Nissan, Honda and Mitsubishi, along with the Development Bank of Japan, are putting those funds to good use. So, that's something. Last week, those five entities officially founded Nippon Charge Service LLC. The company was established to promote plug-in vehicle charging installations across Japan and the automakers seeded it with 80 million yen, or about $786,000 US. Those funds will be used to help business owners deploy charging stations at convenience stores, highway-side locales and other locations that will make it easier for plug-in vehicle drivers (of Toyotas, Hondas, Mitsubishis and Nissans, obviously) to get their juice. The automakers first announced they'd collaborate last year, when they said they'd work with the Japanese government to more than triple the country's publicly accessible chargers to about 17,000 units. No targets were disclosed as far as how many charging stations would be deployed this time out, but, in a move similar to the EZ Charge system in the US, Nippon Charge Service will also have universally-accepted charging cards available by the end of the year to drivers all of those brands' plug-in vehicles to make the charging process a little more seamless. Check out Honda's press release below. Japan Automakers Advance Electric Charging Infrastructure with New Company, Nippon Charge Service -Established to help build charging infrastructure for electric-powered vehicles (PHVs, PHEVs and EVs)- Toyota Motor Corporation Nissan Motor Co., Ltd. Honda Motor Co., Ltd. Mitsubishi Motors Corporation Development Bank of Japan Inc. TOKYO, Japan, May 30, 2014 - Toyota Motor Corporation, Nissan Motor Co., Ltd., Honda Motor Co., Ltd., and Mitsubishi Motors Corporation jointly established a new company, Nippon Charge Service, LLC, on May 26 to promote the installation of chargers for electric-powered vehicles (PHVs, PHEVs, EVs). The goal is to help build a charging network that offers more convenience to drivers in Japan. The new company will promote the installation of chargers, for the good of society and to expand the use of electric-powered vehicles. Related industries are also expected to benefit. Development Bank of Japan Inc.

Nissan gives a better look at its Vision Gran Turismo concept

Just the other day, Nissan released an image showing all of its cars you can drive in Gran Turismo, with one little mystery hiding in the bottom right corner: a draped shape with the date June 10, 2014 - suggesting that it would reveal its Vision Gran Turismo on that date. Well, if you look at that calendar you'll realize that June 10 came and went yesterday, and Nissan didn't reveal the car.
As it turns out, what the folks at Nissan meant when they indicated June 10 was that they'd release the next teaser on that date, and that's what we have here. The teaser hints at one menacing-looking futuristic chunk of virtual performance meta, but "the next chapter" won't be revealed until next week on Monday, June 16. At that point we hope Nissan will actually reveal the full thing and not another teaser, but one way or another the finished product is expected to be present in the flesh (or sheet metal) for the Goodwood Festival of Speed at the end of the month.