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Tesla poaches Renault-Nissan communications boss Sproule

Need another sign that Tesla is growing into a force to be reckoned with? Bloomberg reports it has just snagged high-profile communications boss Simon Sproule from Renault-Nissan to become the EV maker's vice president of communications and marketing.
Sproule is an industry veteran, having spent 20 years at Nissan (where he grew to become CEO Carlos Ghosn's right-hand man). In addition, he logged stints at Ford, Jaguar (when it was still a Blue Oval-owned brand) and Microsoft. Despite all that experience, Sproule is still young, at just 45 years of age, as Bloomberg points out, yet he's held positions in the US, Japan and France over the years.
This is all good news for Tesla, which is in need of a strong spokesman outside of company CEO Elon Musk. It's been battling with the state of New Jersey and its governor, Chris Christie, over direct sales in the Garden State.

Renault board names Ghosn stand-ins, as tensions with Nissan increase

PARIS/TOKYO — French carmaker Renault tapped its chief operating officer and a senior board member to fill in for embattled boss Carlos Ghosn, after an investigation by alliance partner Nissan led to his arrest on suspicion of financial misconduct. Thierry Bollore, Ghosn's operational second-in-command, will become deputy chief executive, while lead independent director Philippe Lagayette assumes the function of interim chairman, Renault said after a board meeting late on Tuesday. But the board refrained from firing Ghosn while awaiting more detail on the allegations — in a decision that could also buy more time for an accelerated, permanent succession process. "Mr. Ghosn, temporarily incapacitated, remains Chairman and Chief Executive Officer," Renault said in a statement. "During this period, the board will meet on a regular basis under the chairmanship of the lead independent director." Ghosn, one of the car industry's best-known leaders, was arrested on Monday after Nissan said he had engaged in years of wrongdoing, including personal use of company money and under-reported earnings. The Japanese company plans to remove him as chairman on Thursday. The French government, Renault's biggest shareholder, had begun to distance itself from Ghosn, calling for new interim leadership before the meeting, as the Japanese investigation expanded to include Renault-Nissan alliance finances. "Carlos Ghosn is no longer in a position where he is capable of leading Renault," Finance Minister Bruno Le Maire said earlier in the day. "Renault has been weakened, which makes it all the more necessary to act quickly." Statements by Le Maire, Renault and its board all echoed French preoccupations over the future of the alliance first articulated by President Emmanuel Macron within hours of Ghosn's arrest on Monday. Following talks between Le Maire and his Japanese counterpart Hiroshige Seko on Tuesday, the ministers reaffirmed their "shared wish to maintain this winning cooperation." But in a sign that Nissan may now seek to loosen its French parent's hold on the partnership, the Japanese company informed Renault it also had evidence of potential wrongdoing at Renault-Nissan BV, the Dutch venture overseeing alliance operations under Renault's ultimate control, three people with knowledge of the matter told Reuters.

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.