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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 appoints Dacia Logan creator to head its Nano-rival program in India

After watching the Tata Nano post sales numbers smaller than its engine displacement, Renault gave up on its much publicized intention to build a truly inexpensive car to rival it. Then, a month ago, reports emerged that Renault was resuming work on a couple of low-priced cars for emerging markets, but this time it would work with its in-house partner, Nissan. That plan envisions an offering for €3,000 ($3,888 US) and another for €5,000 ($6,400 US), both of which would be more spendy than the Nano but might avoid the charge of being cheap - and nasty - and instead be considered affordable.
A report in Reuters talks to the man in charge, Gerard Detourbet, who has been in Chennai, India since at least August working on the program. Detourbet led the Dacia Logan project and is considered "Renault's low-cost car specialist" and "the father of entry-car programs." This one is reportedly codenamed A-Entry and will create a "'sub-entry' architecture" that will provide roominess beyond the vehicle's price and class, and use an engine with a displacement of 800 cubic centimeters.
It isn't aimed at the Nano, though - it means to take on the products that make up 45-50 percent of India's car market, like the Maruti Suzuki Alto and Hyundai Eon. According to Reuters, out of the 2.6-million-strong Indian car market the Maruti Suzuki line-up alone nabs one million registrations annually. The Alto 800 begins at 244,000 rupees ($4,440 US), the Eon at 300,000 rupees ($5,559 US), the Chevrolet Spark at about 316,000 ($5,750 US); if Renault can nail its price targets it will just about bracket those three and be right in the game.

Pretty scenery alert: Nissan Leaf drives up a volcano on Maui

Gravity taketh away but gravity giveth back, Nissan is trying to teach all of us. The Japanese automaker has posted a two-minute video about Maui resident Neil Wagner using his Nissan Leaf to catch the legendary sunrise over the volcano in Haleakala National Park. After climbing the more-than-10,000-foot elevation, the Leaf is shown having lost about 84 percent of its usable battery capacity. The finer point, though, is that electric vehicles have a regenerative braking system, meaning that the downhill ride and all of its switchbacks actually replenish battery capacity. Of course, the video didn't show exactly how much of that capacity was replenished, but the point is well-made, and with really cool scenery. Sales for the Leaf have already been strong this year. Through the first three months of the year, Nissan boosted sales 46 percent from 2013 numbers up to 5,184 units. This is after more than doubling sales last year to 22,610 units. And, for anyone curious, there are six publicly-accessible plug-in vehicle charging stations in Kahului and another eight in Lahaina, two of Maui's largest cities, according to the US Department of Energy. We're pretty sure that Mr. Wagner already knows that but we're going to take notes in case we need to make the sunrise drive one day. For now, we're going to check out Nissan's two-minute video below one more time. This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings.