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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

Tesla poaches Renault-Nissan communications boss Sproule

Need another sign that Tesla is growing into a force to be reckoned with? Bloomberg reports it has just snagged high-profile communications boss Simon Sproule from Renault-Nissan to become the EV maker's vice president of communications and marketing.
Sproule is an industry veteran, having spent 20 years at Nissan (where he grew to become CEO Carlos Ghosn's right-hand man). In addition, he logged stints at Ford, Jaguar (when it was still a Blue Oval-owned brand) and Microsoft. Despite all that experience, Sproule is still young, at just 45 years of age, as Bloomberg points out, yet he's held positions in the US, Japan and France over the years.
This is all good news for Tesla, which is in need of a strong spokesman outside of company CEO Elon Musk. It's been battling with the state of New Jersey and its governor, Chris Christie, over direct sales in the Garden State.

Honda, Nissan, and Toyota expand Takata recall by millions worldwide

Honda, Nissan, and Toyota are expanding their global Takata airbag inflator recalls to cover millions of additional vehicles. Toyota alone is adding about 5 million vehicles to its campaign globally, and over 600,000 of those are in the US, according to Automotive News. Nissan's expansion includes an estimated 1.56 million cars worldwide, including about 326,000 in North America, but the exact models from the company are not yet known. According to Automotive News, Honda has also announced plans to increase the scope of its campaign but hasn't yet disclosed specific models, total numbers, or their location. Company spokesperson Chris Martin tells Autoblog that none of these vehicles are in the US, though. In the US, Toyota is replacing the driver's side front inflators on 160,000 examples of the 2004 and 2005 RAV4 nationwide. It's also swapping out the front passenger side parts for 177,000 units of the 2003 and 2004 Tundra (pictured above) and 2004 Sequoia. The automaker is also expanding its regional recalls in high-humidity areas to include the passenger-side inflators of 300,000 more vehicles. In total, the affected models are 2005-2007 model-year Corolla, Matrix, Sequoia, and Lexus SC; plus the 2005-2006 Tundra is included, as well. All of the states that are covered by this campaign are listed in Toyota's announcement, below. In a statement to Autoblog, Nissan said that it's currently working with the National Highway Traffic Safety Administration on this campaign. "We expect to have a more formal statement and additional information by Friday, May 15," the company said. TOYOTA EXPANDS TAKATA AIRBAG SAFETY RECALLS TORRANCE, Calif., May 12, 2015 – Toyota Motor Sales, U.S.A., Inc. today announced that it is expanding its recalls involving Takata air bag inflators. First, Toyota will conduct a recall to replace Takata-supplied driver front airbag inflators on approximately 160,000 model year 2004 and 2005 RAV4 sport utility vehicles. The inflators could potentially be susceptible to rupture when deployed in a crash, increasing the risk of injury to vehicle occupants. For similar reasons, Toyota will expand two existing recalls for Takata-supplied front passenger airbag inflators, namely: Toyota's nationwide recall launched in April 2013 will expand to include approximately an additional 177,000 model year 2003-2004 Tundra and model year 2004 Sequoia vehicles.