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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

2016 Civic, Sonata, Lexus RX, and Altima earn TSP+ from IIHS [w/videos]

The 2016 Honda Civic sedan, Hyundai Sonata, Lexus RX, and Nissan Altima started the year with a bang by earning Top Safety Pick+ honors from the Insurance Institute for Highway Safety. They join 48 other 2016 model year vehicles that IIHS already tested that received the agency's top safety marks. These four models met the IIHS' latest requirement, scoring the agency's best possible score in all five of its crash tests – front, side, rear, rollover, and the difficult small-overlap – to be eligible for the safety accolade. Hyundai improved the 2016 Sonata's structure after the sedan's production began, so this rating only applied to examples produced after October. To get the TSP+ honor, a vehicle's crash prevention tech needs to earn least two points on the IIHS' scale. The lower Top Safety Pick designation can go to model with a "basic" version of these systems like a front collision warning. The Civic, Sonata, and RX scored the maximum six points to get "superior" scores for their optional crash prevention tech because they avoided collisions at up to 25 miles per hour. The Altima was successful in a 12-mph test, but the system slowed the sedan by 10 mph in the 25-mph test rather than completely stopping it. Therefore, the agency awarded the Nissan five points, which was still a "superior" score. You can watch the small-overlap tests for the Civic, RX, Altima, and Sonata respectively 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. Four more vehicles earn the 2016 TOP SAFETY PICK+ award ARLINGTON, Va. — The Honda Civic 4-door, Hyundai Sonata, Lexus RX and Nissan Altima are the latest vehicles to earn the top award from the Insurance Institute for Highway Safety. The four vehicles join the 2016 winner's circle just one month after the initial crop of 48 TOP SAFETY PICK+ winners was announced. The requirements for TOP SAFETY PICK+ were tightened for 2016. To qualify, winners must earn good ratings in each of the Institute's five crashworthiness tests and have an available front crash prevention system earning an advanced or superior rating.

Nissan will expand free* charging incentive to 25 Leaf markets

Nissan has proof that giving away a bit of electricity makes buying a new Leaf all the more enticing. Thanks to a deal that offers free charging to some Leaf owners in Texas, one dealer there claims his Leaf sales have tripled. We don't see national sales climbing quite that high starting July 1 2014, but an announcement made today at the New York Auto Show will likely give the EV a boost. New Leaf buyers will get to charge for free at public chargers for two years. Within limits: a max of 30 minutes at CHAdeMO and an hour at Level 2 stations. Nissan will expand its "No Charge to Charge" promotion to at least 25 markets across the US. The deal means that new Leaf buyers will get to charge for free at public chargers that accept the new EZ-Charge card, within limits. That means a maximum of 30 minutes at CHAdeMO DC fast chargers and just one hour at Level 2 stations, Brendan Jones, director of Nissan EV infrastructure strategy and development, told AutoblogGreen. This should be plenty of time, Jones said, since the average Leaf driver comes to a CHAdeMO station with 35-40 percent state-of-charge on the battery and the average time they stay is around 16-17 minutes. A half hour is fine at a fast charger, since the battery will get to 80 percent full within that time, but we're less impressed with the one-hour limit at a Level 2 station, since that will only put maybe 20 miles into the battery. The EZ-Charge card is compatible with four of "the leading EV charging networks," which here means ChargePoint, Blink, AeroVironment and NRG eVgo. Nissan says the 25 markets make up over 80 percent of all the US Leaf sales. Anyone who buys a new Leaf in one of the specified markets - or bought one on or after April 1 of this year - will get the free-to-use EZ-Charge card (others can still get the card, which means only carrying one charger company fob instead of four). The promotion starts July 1 in 10 markets (San Francisco, Sacramento, San Diego, Seattle, Portland, Nashville, Phoenix, Dallas-Fort Worth, Houston and Washington, DC) and then expands to the next 15 by the end of June, 2015. Nissan would not specify which markets these will be, but they will be where the Leaf is selling well and there are DC fast chargers. That means, we suspect, places like Chicago, St. Louis, Philadelphia and Atlanta.