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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

Dodge Viper and Jaguar XK revival | Autoblog Podcast #543

On this week's Autoblog Podcast, Editor-in-Chief Greg Migliore is joined by Green Editor John Beltz Snyder and Consumer Editor Jeremy Korzeniewski. We talk the possible rebirth of the Dodge Viper and Jaguar XK, as well as the recent goings-on at Tesla. Then we share some of our experiences driving in Europe. We also discuss the cars we've been driving, and help spend another listener's hard-earned dough in this week's "Spend My Money" segment. Autoblog Podcast #543 Your browser does not support the audio element. Get The Podcast iTunes – Subscribe to the Autoblog Podcast in iTunes RSS – Add the Autoblog Podcast feed to your RSS aggregator MP3 – Download the MP3 directly Rundown Dodge Viper and Jaguar XK to make a return? Tesla Model 3 braking issues and Elon Musk vs. media Driving in Europe Cars we've been driving: Porsche Panamera Turbo S E-Hybrid Sport Turismo, Infiniti QX50, Range Rover Velar Spend my money Feedback Email – Podcast@Autoblog.com Review the show on iTunes Related Video: Auto News Green Podcasts Dodge Infiniti Jaguar Land Rover Porsche Tesla Car Buying Used Car Buying Driving Safety Performance jaguar xk infiniti qx50

Infiniti QX50 confirmed for NY debut

It's been eight years now since Infiniti took the wraps off its smaller crossover. The model initially known as the EX was subsequently renamed the QX50 in the brand's broad nomenclature shakeup a couple of years ago, but now it's received what promises to be a comprehensive makeover to be revealed at the New York Auto Show next week. Though it hasn't given us any photos to go on (that's the current model pictured above), Infiniti has revealed that "the updated QX50 has a wheelbase increase of more than three inches, creating additional rear legroom and interior volume." We're also told to expect "new front and rear fascias, wheels, side sills, as well as a slightly higher ride stance." Nissan's rival to the likes of the BMW X3, Audi Q5, Volvo XC60 et al is offered Stateside with a 3.7-liter V6 driving the rear wheels or all four, but is offered overseas as well with a 3.0-liter turbodiesel. We'd expect the revised model to carry over the same engines, perhaps with some revisions, when it reaches showrooms this fall.