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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

Carlos Ghosn was on verge of release — so prosecutors file new allegation

TOKYO — Japanese prosecutors added a new allegation of breach of trust against Nissan's former chairman Carlos Ghosn on Friday, dashing his hopes for posting bail quickly. Ghosn and another former Nissan executive, Greg Kelly, were arrested Nov. 19 and charged with underreporting Ghosn's income by about 5 billion yen ($44 million) in 2011-2015. They also face the prospect of more charges of underreporting Ghosn's income for other years by nearly 10 billion ($80 million) in total. The breach of trust allegations were filed a day after a court rejected prosecutors' request for a longer detention of both men. The new allegation only applies to Ghosn, and Kelly could still be bailed out. A request for bail by Kelly's lawyer is pending court approval, according to the Tokyo District Court, but his release will have to wait until next week since the request was still in process after office hours Friday. Prosecutors in a statement Friday alleged that Ghosn in 2008 transferred a private investment loss worth more than 1.8 billion yen ($16 million) to Nissan by manipulating an unspecified "swap" contract. Ghosn also profited by having the company transfer a total of $14.7 million to another company to benefit himself and that company's owner, who helped in the contract manipulation, prosecutors said. Shin Kukimoto, deputy chief prosecutor at the Tokyo District Prosecutors Office, refuse to say if the two transactions were related or how Ghosn illegally profited. He also declined to identify the collaborator or whether the transactions were made overseas. Ghosn and Kelly are only charged with underreporting Ghosn's pay over five years, in violation of the Financial Instruments and Exchange Act. They have not been formally charged with an additional allegation of underreporting another 4 billion yen ($36 million) for 2016-2018, for which their first 10-day detention was to expire Thursday. Prosecutors have been criticized for separating the allegations as a tactic to detain Ghosn and Kelly longer. They say Ghosn and Kelly are flight risks. The maximum penalty for violating the financial act is up to 10 years in prison, a 10 million yen ($89,000) fine, or both. Breach of trust also carries a similar maximum penalty. The conviction rate in Japan is more than 99 percent for any crime. Ghosn was sent by Renault in 1999 to turn around Nissan, then on the verge of bankruptcy, and he led its rise to become the world's second-largest automaker.

Is your new-car warranty good at the race track?

We've all heard the horror stories. Your buddy knows a girl that was dating a guy whose best friend's brother once broke his brand-new, recently purchased performance car while making runs at a drag strip or laps at a track day, and the manufacturer wouldn't cover the repair under warranty. True story? Urban legend? Complete crap? Yes, no, maybe. One thing's for sure: Automotive warranties have always come with caveats. In 1908, an ad in the Trenton Evening Times clearly stated: "All Ford Cars Guaranteed for One Year." Although it changed over time, by 1925 the Ford New Car Guarantee only covered 90 days on material and 30 days on labor, and it clearly stated that that there was "No guarantee whatever on Fan Belts, Glass, Bulbs, Wiring, Transmission, Bands, Hose Connections, Commutator Shells, Rollers, Spark Plugs or Gaskets." Whether or not Ol' Henry would pay to fix your Model T if you broke it shaving a tenth off your lap time at the local board track seems to be lost to history. We're guessing no. But what about today? Do new-car warranties in 2017 cover cars when they are driven on race tracks? We researched the warranties of 14 auto brands to find out, and the answer is yes, no, maybe, depending on the brand, in some cases the model, and whether or not your car is modified from stock. Acura has been out of the high-performance car game for a number of years, but jumps back into the party in 2017 with its hybrid-powered $173,000 NSX supercar. And Acura's warranty, as well as Honda's, clearly states that it does not cover "the use of the vehicle in competition or racing events." View 33 Photos So we asked Sage Marie, Senior Manager of Public Relations for Honda and Acura. "If the car is stock, the warranty covers it on a track just as it does on the street. No question," he told us. "However, if the car is modified, say with slick tires or other components that would put higher stresses on the vehicle's parts and systems, then we would have to investigate the circumstances further." Marie went on to say the same would be true for any Acura model or Honda vehicle, including the new 2017 Honda Civic Si. This became a common theme. Chevrolet actually started this practice with the fifth-generation Camaro on the high-performance ZL1 and Z/28 models.