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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

Ford F-150, Chevy Silverado, Toyota Tundra flunk IIHS headlight test

The Insurance Institute for Highway Safety put pickup truck headlights to the test and found that the majority of them were equipped with subpar units. The 2017 Honda Ridgeline was the only truck to earn a rating of "good." The large pickup truck test was comprised of the: 2016 to 2017 GMC Sierra, 2017 Nissan Titan, 2016 Ram 1500, 2016 to 2017 Chevrolet Silverado, 2016 to 2017 Ford F-150, and 2016 to 2017 Toyota Tundra. The Sierra's headlights earned a rating of "acceptable," the headlights found on the Titan and Ram 1500 were found to be "marginal," and the ones on the Silverado, F-150, and Tundra were rated as "poor." IIHS claims the F-150 was the most disappointing out of the large pickup trucks as both its halogen and optional LED headlights failed to provide adequate visibility during testing. The Ridgeline (which earned a "good rating"), is usually considered a midsize or small truck, though IIHS included it in the field of large pickups. The headlights on the 2016 Chevrolet Colorado, 2016 GMC Canyon, 2016 Nissan Frontier, and 2016 to 2017 Toyota Tacoma, which made up the small pickup truck group, all earned a rating of "poor." The IIHS claimed the Colorado had the worst headlights of any truck that was tested, as the base vehicle's units were only able to illuminate up to 123 feet in front of the car. The Ridgeline's headlights, for reference, were able to illuminate up to 358 feet in front of the vehicle. To conduct its test, the IIHS utilizes a special tool to measure how far light is projected out of the headlights in different driving situations. The trucks' headlights were tested in a straight line and in corners, while vehicles with high-beam assist were given extra praise. The headlights on the pickup trucks also mimic the testing that was done on small SUVs and cars earlier this year. Next year, automakers will need to fit their vehicles with headlights that earn a rating of either good or acceptable to earn the IIHS Top Safety Pick+. Related Video:

Recharge Wrap-up: Nissan 'No Charge' in Denver, A123 doubles

Nissan has introduced its "No Charge To Charge" program in Denver, Colorado. As of June 2, customers who buy their new Nissan Leaf from certified dealers in the metro Denver area will get two years of free charging. Denver is the 16th market to offer "No Charge To Charge," with a total of at least 25 US markets scheduled to offer the program by the end of the year. "EV charging infrastructure continues to grow in Denver," says Nissan EV Sales and Marketing Director Andrew Speaker, "and access to free public charging for new Leaf buyers helps make owning an all-electric vehicle even more cost-effective and convenient." Read more in the press release below. Wanxiang is investing $200 million in A123 Systems in order to double its lithium-ion battery production. The combined capacity of its three production facilities in Michigan, Hangzhou, China and Changzhou, China will increase from 750 megawatt-hours to 1.5 gigawatt-hours in the next three years. The increased capacity will help support customers building hybrids, passenger EVs, and commercial vehicles. Included in the expansion is the capacity to build 12-volt starter batteries and 48-volt microhybrid systems. "It's been a tremendous turnaround," says A123 CEO Jason Forcier, referring to the company's 2012 bankruptcy. Forcier also says the company is already planning another expansion when this one is complete. Read more at Automotive News, and in the press release from A123. The Royal Hashemite Court of Jordan is ordering 150 Zoe EVs from Renault. King Abdullah II of Jordan signed an agreement with Renault, who will deliver the cars by the end of the year. The cars will be powered completely by solar energy generated on royal property. The order of the 150 Zoes is the largest since 2013, and makes Renault the largest provider for Jordan's royal EV fleet. Renault says that further EV orders are already being discussed. Read more in the press release from Renault-Nissan. Beijing, China will exempt electric vehicles from its limits to vehicles on roads during rush hour. Current policy, designed to help alleviate traffic and air pollution, restricts cars with even and odd license plates from rush hour traffic on alternating days. The exemption for EVs runs from June 1, 2015 until April 10, 2016. It is the newest in the list of perks meant to encourage EV adoption, despite the troublesome lack of charging infrastructure. Read more at Green Car Reports.