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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: Infiniti considers EV for China, NextEV hires former Tesla, Apple engineer

NextEV has hired Tesla Autopilot and Apple veteran Jamie Carlson as Senior Director of Advanced Technologies. The seasoned autonomous driving engineer joins fellow former Autopilot engineer Kurt Thywissen, who is now NextEV Senior Director of Human-Machine Interaction. NextEV, which is working on an all-electric supercar before focusing on mainstream EVs, recently obtained a self-driving car permit from California and opened its North American headquarters in San Jose. Read more at Electrek. Infiniti is considering launching its first EV in China. "When I think about EV, we design it for China definitely, even as the first market to launch," says Infiniti President Roland Krueger. "We are discussing this internally constantly what is the right timing for Infiniti to have such vehicles." Infiniti has held back on launching an EV, focusing instead on hybrids, but says it could be "very fast" in deploying an EV once it decides to do so. Having Nissan and Renault backing Infiniti, the luxury brand is confident about its access to proven EV technology. Read more at Automotive News Europe. Thrifty car rental has added a Tesla Model S to its fleet in Canberra, Australia. Available at the Canberra Airport, it's the first luxury EV offered for rent from a mainstream rental company in Australia. Australia's capital offers a small registration discount and no stamp duty for EVs, making it a cheaper and more practical place to locate the country's first rental Tesla. Thrifty's parent company, NRMA, is calling on Australia's other states and territories to remove financial and regulatory barriers to EV technology. Read more at The Motor Report.

Infiniti prices Q50 2.0t from $34,855, hybrid from $47,955

Infiniti has a whole range of new engines coming out for the Q50. And that means a new pricing scheme to go along with it. The bottom line is that you can now get into the sports sedan for as little as $34,855 (inclusive of the $905 destination charge). That price is for the 2.0-liter turbo model that's the new point of entry into the range with 208 horsepower on tap. It also represents a much lower starting price for the 2016 model than the one it replaces, which started at over $38k for the base Q50 3.7. It also undercuts the price of the comparable Audi A4, which also comes with a 2.0-liter turbo four priced from $38,250. The BMW 3 Series straddles the divide with two models equipped with 2.0-liter turbo fours: the less potent 320i with 180 hp priced slightly below the Infiniti at $34,145, and the more powerful 328i with 240 hp for $39,345. If you want all-wheel drive or the Premium trim, you'll need to cough up an extra couple grand for each, which is a larger premium than the Japanese automaker charged before. Pricing for the V6-powered 3.0t and Red Sport 400 models are still to come. But along with the 2.0t sticker, Infiniti also released pricing for the hybrid model, which only comes in Premium spec and starts at $47,955. That's a couple grand more than the outgoing version cost at $45,305. For the time being, the top of the line is the Q50 Hybrid Premium AWD, which goes for $49,955. Related Video: INFINITI ANNOUNCES U.S. PRICING FOR 2016 Q50 2.0T AND Q50 HYBRID PREMIUM MODELS First two of four available Q50 engines available now, new 3.0-liter V6 twin turbo-equipped models to follow later this year NASHVILLE, Tenn. – Infiniti today announced pricing for the 2016 Infiniti Q50 2.0t and Q50 Hybrid Premium models, which are on sale now at Infiniti retailers nationwide. Pricing starts at $33,950 for the Q50 2.0t and $47,050 for the Q50 Hybrid Premium. The Infiniti Q50 sports sedan, Infiniti's best-selling model, enters the 2016 model year with an array of significant enhancements, starting with the addition of three new turbocharged engines and continuing with new technologies designed to enhance the already strong driving dynamics of Infiniti's best-selling model. The 2016 Infiniti Q50 is now offered in an expanded range of trim levels, each in a choice of rear-wheel or all-wheel drive – Q50 2.0t and Q50 2.0t Premium, Q50 3.0t Premium, Q50 Hybrid Premium, Q50 3.0t Sport and Q50 Red Sport 400.