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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 adds 2013 Titan to gearshift recall

Nissan has added the 2013 Titan to the list of vehicles recalled over potential gearshift issues. Just a few days ago, the automaker recalled nearly 20,000 NV Vans for a problem with the shift lever assembly that could cause the gear selector to read inaccurately. Now Nissan is recalling certain 2013 Titan pickup trucks manufactured between December 17, 2012 and February 20, 2013 and equipped with column-mounted shift levers, though for a different fault. The pickups were built using certain chemicals that could cause the brake-shift interlock mechanism to fail over time. If that happens, the truck could be shifted out of Park without the driver's foot on the brake.
As a result, the truck could roll away and cause an accident or injury. Nissan says it will remedy the fault free of charge. Owners can expect to be notified once the campaign begins on or around April 8. You can read the full National Highway Traffic Safety Administration notice below for more information.

Nissan ZEOD RC finds nothing but trouble at 2014 Le Mans

Audi came away a big winner at this year's Le Mans competition, but Nissan has at least one thing to celebrate. The Pyrrhic victory apparently presages Nissan giving up on the gas-electric race car for Le Mans 2015. Before the race this weekend, the prototype ZEOD RC hybrid race car was doing quite well. In fact, given the way things turned out, Nissan's keen to mention that team engineers managed to get the car to complete a lap on electric power and hit a target speed of 300 kilometers per hour (186 miles per hour) on the Mulsanne Straight during testing. ZEOD RC stands for Zero Emission On Demand Racing Car. "The race was obviously very disappointing" – Wolfgang Reip Things didn't go so well once the real race started. The problem for the Deltawing-esque prototype – which is powered by a 1.5-liter gas ending putting out 400 horsepower and a pair of 110-kW electric motors – was that something broke in the transmission after just 23 minutes and five laps. Driver Wolfgang Reip put his best spin on the hybrid's collapse: "The race was obviously very disappointing but having got a taste of Le Mans now, I can't wait to get back." If Reip does return with Nissan, it will likely be in a more traditional Le Mons racer. The ZEOD RC was part of the LM P2 class, but Nissan says that, "For Le Mans 2015, Nissan will return to the LM P1 class." You can watch the full warm-up electric lap in a video below. This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings. Nissan ZEOD RC heroic electric lap followed by heartbreak Amazing morning warm-up result after all-nighter by crew "New tech" car halted by "old tech" issue Nissan breaks new ground in electric vehicles LE MANS, France – Nissan's assault on the Le Mans 24 Hours may have ended early, but the revolutionary Nissan ZEOD RC electric prototype still leaves Le Mans having reached its historic goals of hitting 300 km/h on the Mulsanne Straight and recording a complete lap of Le Mans on electric power only. The unique prototype – which features both internal combustion and electric power sources – reached its first target during Thursday night qualifying when Satoshi Motoyama exceeded 300 km/h before the first chicane on the Mulsanne Straight. Nissan's other key goal was to complete an entire 8.5-mile lap of Le Mans on pure electric power. GT Academy winner Wolfgang Reip was at the wheel when the team achieved this goal during the morning warm-up.