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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

Renault's push for more affordable EVs has global implications

The Renault K-ZE is a small electric car that signals a big change in how the French automaker plans on bringing electric vehicles to the masses. Set to go on sale in China beginning in 2019, the K-ZE is meant to have the design of a sport-utility vehicle, but it's on a supermini-sized frame. While it's set to arrive in Europe by 2021, this petite EV could eventually impact electric sales here in the U.S., too. That's because Nissan, maker of the Leaf EV, is part of the Renault-Nissan-Mitsubishi Alliance, a three-pronged automaker with a huge global presence. In China, however, the Renault brand has been absent from the country's booming market for electric vehicles — driven in large part by government mandates to combat air pollution by promoting cleaner, zero-emission cars and trucks in cities. Speaking ahead of the K-ZE's debut this week at the 2018 Paris Motor Show, Carlos Ghosn, the chairman and CEO of Group Renault, stated the company "was a pioneer and is the European leader in electric vehicles." To this, he added the K-ZE is meant to have global reach and bring costs down for the consumer. "We are introducing Renault K-ZE, an affordable, urban, SUV-inspired electric model combining the best of Groupe Renault: our leadership in EV, our expertise in affordable vehicles and in forging strong partnerships," said Ghosn. In China, the K-ZE will be manufactured as part of a joint partnership in cooperation with Renault, Nissan and the Chinese automobile firm Dongfeng Motor Group. The range of the K-ZE is expected to be about 150 miles per charge, or roughly the current range in the 2018 Leaf EV. Except the K-ZE is almost three feet shorter than the Leaf, which means Renault is getting a lot more range from a smaller and lighter amount of batteries. While a car this size would be too small for the U.S. market, the technology beneath this teeny hatchback/SUV is certain to make an appearance here in the years ahead. At the 2018 Geneva Motor Show, Nissan provided a hint of its future European EV plans, courtesy of the IMx Kuro Concept. This edgy-looking electric crossover is a good indication as to the design direction of Nissan's next range of electric crossovers and SUVs over the next 3-5 years — look for the design and tech to similarly migrate stateside.

Nissan pulled planned reveal of longer-range Leaf from L.A.

The arrest and detention of its former chairman, Carlos Ghosn, prompted Nissan at the last minute to pull the plug on plans to debut a longer-range version of its Leaf battery- electric car at the Los Angeles auto show, The Wall Street Journal reports. Nissan instead showed two mild-refresh models for 2019 — the Maxima sedan and the Murano crossover. It had reportedly hoped to make a bigger splash by unveiling the upgraded Leaf with actress and brand ambassador Margot Robbie at a media event at the Japanese American National Museum. It went ahead with an event at the venue, showing current models of the Leaf and holding the Nissan Futures event, the first time the series of panel discussion and keynote addresses had been staged in the U.S., with Robbie sitting down for a brief interview about owning an EV and sustainability issues. "The official announcement regarding details of the 2019 Nissan Leaf with additional performance capabilities is postponed to a later date," the company said in a statement. A spokesman told the Journal the postponement was "to ensure that this important product unveiling could receive the coverage it merits." Ghosn was arrested Nov. 19 in Japan on allegations of financial misconduct, including what Nissan has said was personal use of company money and deliberately under-reporting what he had been paid. Both Nissan and alliance partner Mitsubishi have ousted Ghosn as chairman, though his status remains unchanged for now at Renault, the third member of the partnership where he is both chairman and CEO. Renault has appointed a stand-in replacement while Ghosn remains in custody. Reuters reports that Tokyo authorities extended Ghosn's detention a second time Friday and have until Dec. 10 to file charges or release him. The auto world has been widely anticipating a longer-range version believed to be called the Leaf E-Plus, with a 60-kWh battery pack and an expected driving range of around 225 miles, up from the 40-kWh battery and 151-mile driving range of the current model. A recent report suggests that its starting price will be about $5,500 more than the 40-kWh version, meaning around $36,385 before federal EV tax credits. A spokesman tells Autoblog the postponement doesn't affect the new Leaf's on-sale date but added that date has yet to be announced.