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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

Recharge Wrap-up: Fiat 500X emissions, Japan EV sales down

The Fiat 500X exceeds EU emissions limits, according to environmental lobby group DUH. In dyno tests, DUH found NOx emissions in the diesel-powered 500X to be 11 to 20 times the limit with a warm engine, but closer to the limit with a cold engine. Testing of vehicles from Fiat and other automakers "point towards defeat devices," says DUH campaigner Axel Friedrich. Fiat Chrysler Automobiles (FCA) offered no comment in response to the accusations. Read more from Reuters. A UK study finds that about 20 percent of the benefits from fuel efficient vehicles are negated by a tendency for people to drive them more. The study, which covers the years 1970 to 2011, finds a significant "rebound effect," when consumers use more of a cheaper energy source. It suggests these drivers drive more not because of the fuel efficiency, but because of the lower operating costs. "Until now, we didn't know the size of this effect for British motoring," says Dr. Lee Stapleton, Research Fellow for the University of Sussex Centre on Innovation and Energy Demand. "We found evidence of a significant, long-term rebound and expect our results to be of interest for public policy." Read more at Green Car Congress. Japanese EV sales have declined for the first time ever. Sales of electric vehicles slid 22 percent in 2015, leaving them at the same levels as 2012. Low gasoline prices are to blame, as well as the late arrival of the updated Nissan Leaf, which caused potential customers to hold off on their purchase. This allowed the Mitsubishi Outlander PHEV to take the lead as Japan's best selling EV. The Toyota Prius Plug-In came in third place in EV sales, with the BMW i3 close on its heels. Read more from EV Sales. Featured Gallery 2016 Fiat 500X: First Drive View 34 Photos Related Gallery Mitsubishi Outlander PHEV Concept-S: Paris 2014 View 12 Photos News Source: Reuters, Green Car Congress, EV SalesImage Credit: Copyright 2016 Drew Phillips / AOL Green Fiat Mitsubishi Nissan Emissions Fuel Efficiency Electric recharge wrapup

Nissan, Mitsubishi team up for $14,000 electric car

Last November, the Renault-Nissan Alliance and Mitsubishi announced a partnership to build some tiny electric vehicles for the Japanese market. Well, the partnership is going to build more than that (like the Nissan Dayz, pictured above in Roox form, and the Mitsubishi eK wagon), but we're most interested in the upcoming plug-in results. Those results are not here yet, but we now know that the 50-50 joint venture is moving forward and that the first "kei car" EV from the project is now due in fiscal 2016, according to the Nikkei Asia Review. The makers of the popular Leaf and i-MiEV electric vehicles say that the new small EV will be the cheapest EV on the market when its released, potentially priced at 1.5 million yen (around $14,700 US). Currently, the i-MiEV is the cheapest EV option in Japan, with a 2.5-million yen starting price (just under $24,500 US) before incentives. Taking a good $10,000 of the purchase price is likely more than enough to counter the smaller size and, perhaps, more limited amenities. Featured Gallery 2014 Nissan Dayz Roox: Tokyo 2013 View 15 Photos News Source: Nikkei Asia Review Green Mitsubishi Nissan Renault Electric kei car