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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

200 Nissan Leafs recalled for faulty power inverters

Nissan is going full speed ahead with strong sales for its all-electric Leaf. Unfortunately, some of those Leafs had a glitch that could stop some of those Leafs from doing the same. Credit a faulty power inverter. US Department of Transportation says the faulty power inverters may cause some Leafs to shut down unexpectedly. Thankfully, the glitch affects just 196 Leafs, all of which were produced between April 15 and 24, 2014. Official DOT information on the recall is available here and it's also pasted below. Nissan started contacting Leaf owners in late May, instructing them to bring their vehicles to certified Leaf dealers for repairs, Nissan spokesman Brian Brockman told AutoblogGreen, adding that there'd been no cases of vehicle shut downs from the power inverter. Nissan confirmed the 196-vehicle figure and isn't charging the vehicle owners for the repairs. The company is also providing loaner vehicles at no cost. The recall marks a rare bit of bad news for Nissan's electrification efforts, as the Japanese automaker has been boosting sales of the Leaf all year. Through May, Leaf sales in the US were up 36 percent from a year earlier to 10,389 units, and May sales alone had surged 46 percent from a year earlier. In May, Chrysler recalled more than 4,141 Fiat 500e models from the 2013 and 2014 model years for a similar issue. Inverter modules on those vehicles may allow coolant to seep onto electrical components, which could cause a short circuit and power loss. The recall impacted cars built between September 2012 and April 2014. Report Receipt Date: MAY 16, 2014 NHTSA Campaign Number: 14V263000 Potential Number of Units Affected: 196 Manufacturer: Nissan North America, Inc. SUMMARY: Nissan North America, Inc. (Nissan) is recalling certain model year 2014 Nissan LEAF vehicles manufactured April 15, 2014, through April 24, 2014. Due to a problem with the motor control circuit board, the inverter may fail, causing the vehicle shut down. CONSEQUENCE: An unexpected vehicle shut down increases the risk of a crash. REMEDY: Nissan will notify owners, and dealers will replace the inverter, free of charge. The recall is expected to begin on July 7, 2014. Owners may contact Nissan customer service at 1-800-647-7261. NOTES: Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.safercar.gov.

Next-gen Nissan Leaf will look more mainstream, have more range

The next-generation Nissan Leaf battery-electric vehicle will look better and go farther on a single charge, company executives tell Automotive News. How much better and how much farther remains to be seen, as does the timing on when the new version will be available to the public. Nissan executive Andy Palmer, speaking recently at the Beijing Motor Show, implied that an electric vehicle would need to have a 185-mile single-charge range to be competitive with hydrogen fuel-cell vehicles, once those arrive in larger numbers. While Nissan boosted its single-charge range by about 15 percent for the 2014 model-year Leaf, the automaker would need to double it to reach that competitive threshold. This seems unlikely for the next-gen model, but we can start making our guesses as to how many more miles Nissan will put into the pack. Regardless, the next-generation Leaf, which may come out around 2017, will at least look a bit more mainstream while it reaches for more range, Automotive News says, citing Nissan global design chief Mamoru Aoki. Indeed, the car, which will keep its hatchback layout, will likely look less angular, said Aoki, who complimented Tesla for the way it styled its Model S luxury electric sedan. Nissan's Infiniti arm could also debut its delayed luxury electric vehicle in 2017, complete with the improved battery pack. Angular looks and all, Nissan continues to increase sales in the US. Leaf sales through April were up 33 percent from 2013, to 7,272 units after more than doubling sales last year to 22,610 vehicles.