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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

48-MPG Nissan X-Trail Hybrid comes to Japan

Next month, Nissan will start selling a hybrid version of its X-Trail compact crossover in Japan. While the Japanese automaker is touting all the bells and whistles like "Intelligent Parking Assist," the model really makes its mark in fuel economy figures. The marquee number is 20.6 kilometers per liter, or about 48 miles per gallon. This is using the more lenient Japanese driving cycle, but it's still something to be proud of. The model also delivers more torque than that typically generated by a 2.5-liter engine while cutting nitrogen oxide emissions by 75 percent relative to the standard gas-powered version. In fact, the X-Trail Hybrid will generate tax exemptions because of its high fuel economy. The model's price in Japan will range from about $23,300 for the base two-wheel-drive version to about $27,000 for the top-of-the-line all-wheel-drive version. The Nissan X-Trail Hybrid goes on sale in Japan May 13. We'd first reported on the X-Trail when it was unveiled at the Frankfurt Motor Show in September 2013, noting at the time that the car's styling was identical to that of the Nissan Rogue. Take a look at Nissan's press release for the X-Trail is available below. Nissan Releases New X-TRAIL HYBRID YOKOHAMA, Japan (April 7, 2015) - Nissan Motor Co., Ltd. today announced the launch of the new Nissan X-Trail Hybrid, which goes on sale on May 13, 2015 at Nissan dealers throughout Japan. The current generation X-Trail has garnered good reviews from customers for its excellent driving performance, realized by features such as its ALL MODE 4X4-i system and advanced chassis control technologies that have been adopted as world-firsts – as well as a variety of safety features such as Emergency Brake and Around View Monitor with Intelligent Parking Assist. Equipped with the 2.0-liter MR20DD hybrid engine that enables both driving and environmental performance, the new X-Trail Hybrid delivers a comfortable driving experience with its powerful acceleration and remarkable quietness, which eclipse those of typical 2.5-liter gasoline engines. In addition, all the grades achieve tax exemptions. In addition, the new X-Trail Hybrid will have Forward Emergency Braking as standard equipment, expanding its safety technology features. Nissan is planning to introduce Forward Emergency Braking as standard on major models in Japan, by the end of autumn 2015.

Nissan recalling GT-R, Infiniti crossovers over steering column issue

Nissan has discovered a problem with the steering column on some of its higher-end all-wheel-drive vehicles from a few years back, and has issued a recall in conjunction with the National Highway Traffic Safety Administration to address the issue. The issue revolves around the outer tube on the steering column, which may not be perfectly round. That would put extra stress on the upper steering bearing, which could cause it to fracture, disabling the car's steering ability and potentially leading to a crash. The problem affects Nissan's flagship GT-R supercar – specifically 2009 models manufactured between March 14, 2007, and April 25, 2008) as well as an array of Infiniti crossovers: namely the 2008 EX35 and the 2008-09 FX35 and FX45. In the case of the luxury crossovers, Infiniti dealers are being instructed to replace just the steering shaft, but Nissan dealers will have to replace the entire steering column assembly on the GT-R. All told, the recall is estimated to encompass 16,973 vehicles across the United States. RECALL Subject : Steering Column Tube may be Out of Round Report Receipt Date: FEB 02, 2015 NHTSA Campaign Number: 15V054000 Component(s): STEERING Potential Number of Units Affected: 16,973 Manufacturer: Nissan North America, Inc. SUMMARY: Nissan North America, Inc. (Nissan) is recalling certain model year 2008 Infiniti EX35 vehicles manufactured June 29, 2007, to April 25, 2008, 2009 Infiniti FX35 and FX45 vehicles manufactured October 31, 2007, to April 16, 2008, and 2009 Nissan GT-R vehicles manufactured March 14, 2007, to April 25, 2008. The steering column outer tube may not be round, resulting in extra stress being applied to the upper steering bearing. This stress may cause the bearing retainer to fracture, creating extra play in the steering wheel or a possible loss of steering. CONSEQUENCE: Extra play in the steering wheel or a loss of steering may increase the risk of a crash. REMEDY: Nissan will notify owners, and dealers will replace the steering shaft on the Infiniti EX35, FX35, and FX45 vehicles, and will replace the steering column assembly on the Nissan GT-R vehicles, free of charge. The manufacturer has not yet provided a notification schedule. Infiniti owners may contact customer service at 1-800-662-6200. Nissan owners may contact the GT-R hotline at 1-866-668-1487.