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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

Nissan ZEOD RC completes 24 laps at Le Mans

Well, that's a nice start. Nissan says a test version of its ZEOD RC racecar has completed its first 24 laps at Le Mans in France. And, aside from two "small technical issues," things went swimmingly. The ZEOD (which stands for "zero emissions on demand") RC pairs a 1.5-liter, three-cylinder engine with a couple of electric motors and includes regenerative braking. The Japanese automaker first started testing the vehicle last fall. The first ZEOD prototype was unveiled at Le Mans last summer. Driven by Wolfgang Reip and Tommy Erdos, the test-version ZEOD suffered from a broken fuel pump and faulty exhaust, but still completed "large sections" of the circuit on electric power alone, so Nissan is gonna call the test run a success. The goal, of course, is to complete a single, 8.5-mile lap at Le Mans purely on electric power. Nissan will test the real version of the ZEOD this week in the UK. Satoshi Motoyama and Lucas Ordonez will drive with Reip at the actual Le Mans race. Check out Nissan's press release below, and take a look (you can cringe a bit if you want) at a really cool crash-test video of the car from last month here. Nissan ZEOD RC on track at Le Mans for the first time SILVERSTONE, UK & LE MANS, FRANCE – The Nissan ZEOD RC completed its first 24 laps of Circuit de la Sarthe with GT Academy winner Wolfgang Reip and two-time Le Mans P2 winner Tommy Erdos at the wheel. While the car was delayed with two small technical issues – a broken fuel pump issue and a broken exhaust – today's test was an important step in the development of the car that aims to complete an entire lap of Le Mans on pure electric power. "Today has been a very important step in the development of the car and what we have achieved is actually quite remarkable," said NISMO's Global Head of Brand, Marketing & Sales, Darren Cox. "We knew we were tackling a huge challenge with the goal of building a car that could complete an entire 8.5 mile lap of Le Mans on nothing but electric power. We have certainly discovered why nobody has tackled it previously. "We completed large sections of the circuit today on EV power and learned a great deal," Cox continued. "Today was about testing the systems and ensuring the transition from electric to internal combustion power was seamless. Testing at other venues is extremely valuable but there is no substitute to running here at Le Mans.

Nissan Juke facelift teased before Geneva

Nissan's funky Juke mini-CUV is set to get a refresh at next week's Geneva Motor Show. If you're thinking that the Japanese automaker will take the opportunity to scale-back some of the crossover's polarizing exterior, think again: Nissan claims the new vehicle will feature an "even more striking design." And with stronger-than-expected sales worldwide for the model, we don't see the company's designers capitulating with a meek-faced mid-life update.
For now, the only look we have of this "striking design" is the teaser image shown up top (go ahead and click on it for a closer look). Nissan is also promising improvements in efficiency and refinement, although what that means for the Juke's fun-to-drive character is unclear.
Because we live in an age dominated by social media, the new Juke will perform a slow striptease on a variety of social networks, according to Nissan. It won't be a full reveal, but there should be some clues as to what the CUV's overall look will evolve into, before it's shown in all its glory in Geneva.