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Now Mitsubishi Motors has ousted Carlos Ghosn, days after Nissan firing

TOKYO — Mitsubishi Motors said on Monday its board removed Carlos Ghosn from his role as chairman, following his arrest and ouster from alliance partner Nissan last week for alleged financial misconduct. Ghosn's sacking in a unanimous board vote marks the end of his chairmanship of Japanese automakers, just two years after he was praised for bringing a steadying hand to Mitsubishi Motors following a cheating scandal in 2016. CEO Osamu Masuko will become temporary chairman, the automaker said. "Ghosn has lost the confidence of Nissan" and it is "difficult for him to fulfill his duties," spurring the dismissal, Mitsubishi Motors said in a statement. Nissan holds a controlling 34 percent stake in Mitsubishi Motors and has two executives on the board. The move comes amid discontent over French partner Renault SA's role in the 19-year Franco-Japanese alliance of which Ghosn was the driving force. Sealed in 1999 when Nissan was rescued from near-bankruptcy, it was enlarged in 2016 to include Mitsubishi and enabled the members to jointly develop products and control costs. The alliance vies with Volkswagen AG and Toyota for the ranking of the world's biggest automaker. Even as Nissan has recovered and grown rapidly, it remains a junior partner in the shareholding structure. Renault owns 43 percent of Nissan and the Japanese automaker holds a 15 percent non-voting stake in the French firm. And Nissan is almost 60 percent bigger than Renault by sales. Top alliance executives are meeting this week in Amsterdam, aiming to shield their joint operations from the fallout of Ghosn's arrest as a power struggle between Nissan and Renault looms. Renault has refrained from firing him as chairman and CEO. Mitsubishi Motors already had plans to discuss its position in the alliance with Ghosn and, following the ouster, it needs to consider focusing on regions and technology where it can retain competitiveness, CEO Masuko told reporters after the board meeting. Cooperation among alliance members is needed amid the rise of new technology like automated and internet-connected vehicles, he said. Nissan CEO Hiroto Saikawa told staff on Monday that power was too concentrated with Ghosn and that in future better communication between alliance board members and executives would help preserve independence and generate synergies among the automakers, a Nissan spokesman said.

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.

Nissan Leaf sells 1,553 in April, Volt climbs to 905

After three months in the 500 and 600 range, sales of the Chevy Volt climbed to 905 in April. That's up for the year so far – likely due to increasing discounts – but still down 41.5 percent from April 2014. As we've been saying every time the Volt turns in less-than-exciting monthly sales numbers, we suspect a large number of potential Volt buyers are waiting for the next-gen model to arrive in the second half of 2015. While the price for that car has not yet been announced, the updated tech specs show that it will probably be worth the wait for drivers who want the latest and greatest. Over on the Nissan Leaf side of things, April sales were 1,553 units this year. That's the second-best month of the year but down from the 2,088 units sold last April. After the Leaf finally climbed to the top of the cumulative best sellers list for plug-in vehicles last month, the difference between these two leaders is now 1,824 in favor of the Leaf. Nissan says that sales were influenced by the launch of its No Charge To Charge promotion in Indianapolis and Fresno, CA. This deal gives new Leaf buyers and lessees two years of no-cost quick charging in these markets. No Charge To Charge is not available in 15 US markets for (San Francisco, Sacramento, San Diego, Seattle, Portland, Nashville, Phoenix, Dallas-Ft. Worth, Houston, Washington, DC, Los Angeles, Chicago and Atlanta) and will expand to 10 more by the middle of this year. As we do every month, our full wrap-up of US green car sales is coming soon. For now, enjoy discussing these sales figures in the Comments below.