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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: video touts Volvo electric buses, Nissan and BMW build EV chargers in S. Africa

Volvo is touting the advantages of electric buses in a new video. The short film, called Route 55, promotes the ElectriCity Project for public transport, and, more specifically, the new electric bus route in Gothenburg, Sweden. The new route debuts June 15 using Volvo electric and hybrid buses. In the video, two teenagers are seen waiting for the bus. As one boards, the other asks her out from the sidewalk, but she can't hear him over the noise of the diesel bus, which then closes its doors and drives away. The film asks, "What if this bus had been silent?" See the video above, and read more in the press release below. BMW and Nissan will build an EV charging network across South Africa. Through 2017, the two automakers will build fast-charging and AC stations around the country in order to encourage the adoption of EVs. Nissan has been selling the Leaf in South Africa since 2013, and BMW introduced the i3 and i8 in March. "In order for the introduction and expansion of electric vehicles as well as plug-in hybrid electric vehicles to be successful in this market, we need to work together," says BMW South Africa Managing Director Tim Abbott. Read more at Automotive News Europe. The Renault-Nissan Alliance will provide the United Nations with 200 electric vehicles for the COP21 climate conference in Paris. The fleet of vehicles includes the Nissan Leaf and e-NV200, as well as the Renault ZOE, Kangoo ZE and Fluence ZE. The entire passenger car shuttle fleet will use all-electric vehicles as some 20,000 UN attendees descend upon Paris from November 30 to December 11. "Thanks to the Alliance's fleet of 100-percent electric vehicles, it will contribute to our goal of achieving a carbon neutral event," says French Minister of Foreign Affairs and International Development and COP21 President Laurent Fabius. "The technology of electric vehicles helps reduce greenhouse gases in the transportation sector efficiently." Read more from Renault. Visa will be the official title sponsor of the Formula E London ePrix. Officially called the "2015 FIA Formula E Visa London ePrix," the races on June 27 and 28 will be the last of the electric racing series's inaugural season. Visa Europe will award the Visa Fastest Lap trophy after the each round, and will have interactive activities at the race's eVillage.

2014 Nissan GT-R [w/video]

Chasing The Legend
There are only a handful of vehicles in existence that can change you permanently - ones that have the power to rewire your concept of speed to fit their definition. Some five years after the Nissan GT-R legally touched down here in the US for the first time, the coupe is still bending perceptions of what it means to be a supercar in the modern age. For 2014, engineers reworked the GT-R's twin-turbocharged 3.8-liter V6 engine for more power, tweaked the transmission and massaged the suspension for ever more speed. Yes, that's right, I said more speed.
The changes have sharpened one of the best performance buys on the market into a weapons-grade track assault vehicle that just so happens to be street legal. More than ever, this is a car that rankles established supercar players with names like Lamborghini, Ferrari and Porsche, and does so with a Nissan badge on the hood.