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A look inside Infiniti's variable-compression engine

We're sympathetic to anyone who had trouble understanding what's going on with Infiniti's new variable-compression engine. While we got a full tech briefing on the novel VC-Turbo back in August, the visual aids were lacking. The cutaway engine Infiniti brought to the Paris show fixes all of that. You can thank the little green and pink lines on the cutaway for making the whole idea a little more clear. Click through the gallery to see two lines – one green and one pink – that represent the different strokes allowing for different compression ratios. Remember, the compression ratio is the amount of volume in the cylinder on intake compared to the amount at the end of the compression stroke. Leave more room at the end and you lower that ratio. The length of the stroke doesn't change with this system, but where it sits along the cylinder does. Hence those two lines. The variable compression ratio allows this new turbocharged engine to maximize fuel economy when the turbo isn't needed by raising the compression ratio. It will see its first use in the next Infiniti QX50 crossover, previewed by the QX Sport Inspiration concept that's also on display in Paris, and has performance targets of 268 horsepower and 288 pound-feet of torque. After, it will migrate to other Infiniti and Nissan vehicles, with transverse front-drive-based applications first in line. Eventually, it's likely to completely replace Nissan's corporate 3.5-liter V6. We'll be poking around the engine a little more in Paris today to try and get some more info. For now, enjoy those cutaway images and those friendly little lines. Featured Gallery Infiniti VC-Turbo engine cutaway View 14 Photos Paris Motor Show Infiniti Nissan Technology Emerging Technologies engine 2016 paris motor show

Nissan, Mitsubishi confirm plans to invest in Renault EV unit Ampere

PARIS — Renault's longstanding alliance partners Nissan and Mitsubishi confirmed plans to invest in the French car maker's electric vehicle unit Ampere and use it to develop EVs for the European market, the companies said on Wednesday. After years of contentious partnership, the announcement on Wednesday confirms that the new alliance between the three automakers is smaller and more pragmatic, focusing on regional cooperation. Nissan and Mitsubishi confirmed they would invest respectively up to 600 million euros ($647.46 million) and 200 million euros in Ampere, which has been carved out from the rest of Renault and is due for a public listing next year. Nissan will become "a strategic investor" in Ampere, Makoto Uchida, CEO of the Japanese car marker told reporters, adding the company may use the EV unit's software and connectivity innovations in other markets outside Europe. "Developing electric vehicles all over the world alone would be very challenging," he said. Ampere will develop and manufacture an electric version of the compact Nissan Micra for the European market and a medium-sized electric SUV for Mitsubishi. Renault CEO Luca de Meo said Ampere will cut the costs for the Micra for Nissan by 50%. The alliance partners also confirmed their joint projects in Latin America and India. In September, Renault, Nissan and Mitsubishi ended their common purchasing agreement, which they said would allow them to focus on individual projects and adapt more quickly to regional differences in automotive markets. At the end of July, Renault and Nissan finalised the terms of a restructured alliance after months of negotiations. Talks dragged on for months longer than expected due in part to Nissan, which was concerned about protecting its intellectual property in future collaborations. Related video: Earnings/Financials Green Mitsubishi Nissan Renault Electric

Nissan Leaf sales up again in February, Chevy Volt dips deeper

Nissan managed to buck the industry's overall trend of lower sales in February with double-digit growth throughout its lineup. That includes a 12th month of record sales for the Nissan Leaf electric vehicle, with the year-over-year numbers up more than a skosh. The February ledger for the Chevy Volt looked much worse, falling 25.6 percent from February 2013 down to 1,210 units. With 1,425 Leafs sold, Nissan came away the winner in a head-to-head competition between these the two early plug-in vehicles for the fourth month in a row. Nissan expects the Leaf's sales momentum continue in March. February Leaf sales were up 118.2 percent, making 2014 the car's best February ever. The car was most popular in San Francisco, CA and Atlanta, GA, two places where the the brutal winter cold that struck most of the country had a limited effect. Nissan said that other markets with notable Leaf sales growth were Honolulu, HI, Dallas/Ft. Worth, TX and Denver, CO. Toby Perry, Nissan's director of EV sales and marketing, said in a statement that Nissan, "amped up advertising in the latter half of February, which already has resulted in an uptick in sales and a significant increase in shopping traffic. We expect to see that momentum continue in March." The Volt retains an overall sales lead against the Leaf, but Chevy's calendar year-to-date sales numbers are down 23.1 percent so far in 2014. Overall, Chevy's sales calendar YTD numbers were down just 7.7 percent, so the Volt is performing below average. As always, we will have a more complete report of last month's green car sales up in short order. Green GM Nissan Electric Hybrid PHEV ev sales