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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

Recharge Wrap-up: Elon Musk talks autonomous cars, Renault to run ZOE in ZENN Monte-Carlo Rally

Elon Musk discussed the autonomous driving capabilities of the Tesla Model S with NVIDIA CEO Jen-Hsun Huang. He said the car is already equipped with the hardware needed for highway driving. "Even with the current sensor suite, we could make the car go fully autonomous, but not a level of reliability that would be safe in, say, a complex urban environment at 30 miles an hour," says Musk. That would require "a bigger sensor suite, and you need more computing power." Huang and Musk also discussed car hacking and artificial intelligence during the interview at the 2015 GPU Technology Conference. See the video above, and read more at Teslarati. Renault will send four of its ZOE electric cars to the ZENN (Zero Emission, No Noise) Monte-Carlo Rally. The rally, which travels through the principality beginning and ending at the Port of Monaco, is open to electric cars with ranges of less than 250 kilometers (about 155 miles). Visitors can also explore an "electric village," which includes vehicle test drives and information about the future of automobiles. The race takes place from March 20 through 22. Read more in the press release from Renault below. A Seattle-area Nissan dealership has opened a "charging depot" with six fast chargers. Bellevue Nissan now claims to have a larger group of fast chargers than any other dealership in the country. The chargers are part of the NRG eVgo network, and will be available to drivers around the clock every day of the week. They'll also be part of Nissan's "No Charge To Charge" program for Leaf customers. Washington Governor Jay Inslee was on hand at the dealership for the opening, where he called such fast charging stations, "the backbone of our future transportation infrastructure." Read more at Hybrid Cars. A coalition of environmental groups and renewable energy advocates want New York to require all heating oil sold in the state to include at least two percent biodiesel. The proposal passed the Assembly's Committee on Environmental Conservation Tuesday. Its sponsor is Assemblyman Steven Englebright, a Long Island Democrat who says a biodiesel standard would reduce carbon emissions while boosting the state's agricultural industry. Supporters of a biodiesel standard include the New York League of Conservation Voters, the New York Public Interest Research Group and the state's Corn and Soybean Growers Association. Conventional oil companies are opposed.

Sporty cars from the '80s get retro reviews from MotorWeek

The more things change, the more they stay the same. That's the feeling we're left with after watching the retro-review video above, in which MotorWeek – television's original automotive magazine, as if you didn't already know – takes a look at the 1984 Honda Prelude. A sporty coupe from Japan that lacks the outright performance and thrust of comparable American and European competitors, but makes any perceived slight up with unarguably supreme driving dynamics? That sounds sort of familiar, doesn't it? As always, we love taking a look back at the early days of MotorWeek (the more things change, they more they stay the same, remember?). And it doesn't end there. Far from it, in fact. Not only did MotorWeek bestow upon us the Prelude, Maryland's favorite public television show also unleashed retro reviews of (deep breath) the '82 Fiat X1/9, '84 Olds Cutlass, '88 Lotus Esprit Turbo, '84 Nissan 200SX Turbo, '88 Subaru XT6, '88 Toyota Celica All Trac, '84 Ford EXP Turbo, '89 Suzuki Swift GTi and '89 Mazda 323 GTX. Watch them all, up above and down below. This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings. This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings. This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings. This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings. This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings. This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings. This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings. This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings. This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings. This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings. Honda Nissan Toyota Automotive History Coupe Classics Videos retro review honda prelude oldsmobile cutlass