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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'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.

Red Bull to run TAG Heuer-branded engines next season

After a drawn-out and very public effort to switch to a different engine supplier, Red Bull Racing will once again be running under Renault power next season. Only it won't be labeled as a Renault. Instead, it will be branded by TAG Heuer. Now if you're thinking that TAG Heuer was in the McLaren camp, you were right up until today's announcement. One of McLaren's oldest partners, the watchmaker jumped ship to join up with Red Bull instead, ostensibly replacing Casio as the team's official timekeeper. Now here's where it gets a little tricky: Mansour Ojjeh and his Techniques d'Avant Garde holding company remain a major stakeholder in McLaren. The firm owned Tag Heuer from 1985 to 1999; now its former watch brand is leaving for Red Bull. This isn't the first time that the TAG name has transferred from one F1 team to another, nor is it the first time we'll see its name replace that of a major automaker on an F1 engine. Techniques d'Avant Garde previously partnered with Williams before Ron Dennis took over in Woking and convinced Ojjeh to come on board. That partnership saw TAG work with Porsche on a successful F1 engine program that won three drivers' championships (with Niki Lauda and Alain Prost), two constructors' titles, and 25 grands prix. While unusual, the deal is hardly unprecedented. Aside from the McLaren-TAG-Porsche arrangement, Sauber once ran Ferrari engines under the brand of its sponsor Petronas (which has long since switched to Mercedes). For another example, the 1998 world championship saw Benetton running Renault engines under the Playlife name, while Williams rebranded its version as Mecachrome, as the French automaker shifted its priorities in F1 much as it is right now. The announcement still leaves a few questions unanswered, however. For one, will Red Bull continue running TAG Heuer-branded engines made by Renault (or another supplier) after 2016? And what does this spell for Infiniti, Renault's sister-brand that has sponsored the team for the past several years? Infiniti declined to comment, but we're told there'll be some sort of announcement early next week. Red Bull Racing to drive forward with TAG Heuer power unit in 2016 From the milliseconds that separate victory from defeat to the finely balanced and perfectly measured rhythm of a racing engine, in motorsport timing is everything.