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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

Nismo smartwatch concept tracks both car and driver [w/videos]

Whether you agree or not, this writer believes that every supercar needs a wristwatch to go with it. Though the Nissan GT-R has been lacking in this one regard, Nissan is keen to correct that wrong. But while most of these automotive-inspired timepieces are decidedly mechanical, Nissan has gone a suitably different direction in creating its new Nismo watch concept.
The electronic smartwatch connects driver, car, watch and phone in a sleek design. The device allows drivers to monitor such parameters as the car's average speed and fuel consumption, access performance telematics on the track, monitor their own heart rate and interface with their smartphone via Bluetooth and a dedicated app. The watch can even tell the driver when it's time to bring his car in for scheduled maintenance, post lap times and such to popular social media platforms, and of course, you know - literally give you the time of day.
Though still in the concept phase, Nissan seems keen to bring this to market, has even gone so far as to design the packaging - made of tire rubber scraped off the track - and done it up in three colors: red, white or black. In the meantime Nismo will be showcasing the smartwatch concept at the Frankfurt show this week, where we hope to get a glimpse up close, but you can delve into the press release and the pair of videos below.

Nissan happy with plug-in vehicles for now, will wait on hydrogen

Anyone who's driven the Nissan Leaf knows that it won't set any land speed records. Still, ask Nissan Vice Chairman Toshiyuki Shiga, and the battery-electric vehicle will be miles ahead of any hydrogen fuel-cell vehicles for the foreseeable future in Nissan's advanced-powertrain plans. Figuratively, of course. Shiga, speaking in Singapore, elaborated on Nissan's interest in developing a production hydrogen fuel-cell vehicle, and, to put it bluntly, he said the company didn't have much interest, the Japan Times reports. Sure, Nissan reached an agreement with Mercedes-Benz parent Daimler and Ford early last year to work together to speed up fuel-cell-vehicle powertrain development. Like Toyota, Honda and Hyundai, the automakers appear to be following the axiom that hydrogen fuel-cell technology is the best-of-all-worlds option for advanced powertrain because of the combination of zero emissions and conventional-vehicle-like full-tank range. Still, the prohibitively high cost of building hydrogen refueling stations will prevent any substantial adoption anytime soon, Shiga says, hence Nissan's focus on battery-electric vehicles. Nissan sells the all-electric Leaf in about 40 countries, and the model is the best-selling battery-electric vehicle in the world. In the US, Nissan sold 24,411 Leaf vehicles through October, up 35 percent from a year earlier.