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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

Infiniti Q70 adds long-wheelbase model, fresh looks for 2015

After all the work done for the Q50, Infiniti has finally given some attention to its flagship sedan, the Q70 (or, for those that refuse to use the brand's latest nomenclature, the M). While the refreshed sedan sports a few visual tweaks, the big bit of news is that it's the first vehicle in its segment to offer both long- and a short-wheelbase options (keep in mind, both BMW and Audi offer LWBs in China, but not in the US).
Infiniti has stretched the standard car's 114.2-inch wheelbase to 120.1 inches, lengthening the car 7.3 inches overall. Nearly the entire wheelbase increase is dedicated to rear-seat legroom, with a substantial increase of 5.6 inches overall. As for the effect the stretching had on the Q70's looks, well, we actually think it might look better with the longer wheelbase.
It's a nice change of proportions that is complemented by the fresh looks of the facelifted Q70. New head and taillights are the biggest changes, with full LEDs in the back and LED accents in front. There's certainly a bit of Q50 in the front, thanks to both the headlights and the new "double-arch" grille, complete with mesh-finish inserts. In the cabin, material quality looks to remain impressive, with Infiniti's cool silver-dust wood trim being shown off in the press images. Outside of that, interior changes are kept to a minimum.

Upcoming QX80 will use current model's platform, powertrain

Infiniti previewed the next-gen QX80 full-size SUV at this year's New York Auto Show with the QX80 Monograph concept. The new model is slated to go into production by the end of this year. Despite the updated look, Motor Trend reports that the next QX80 will ride on the same platform as the current model, carrying along with it the 5.6-liter 400 horsepower V8. The current QX80 shares a platform with the Nissan Patrol globally and the Nissan Armada here in the US. The model has been a success for the automaker, outselling every other Infiniti but the smaller QX60 crossover and Q50 sedan. Though the platform dates back to 2010, it seems Infiniti doesn't want to spoil a good thing. Competition like the Mercedes-Benz GLS-class, Cadillac Escalade, and Lexus LX are about as old as the current QX80. While most new models are more refined than their predecessors, Infiniti Motor Company President Roland Krueger says it should drive about the same as the current model. While the V8 will carry over, Krueger didn't rule out the possibility of a smaller turbocharged V6 for the future. Also carrying over will be the independent, self-leveling rear suspension, though neither the QX80 or Armada get some of the Patrol's really good off-road components. Since there isn't much going on beyond the skin, expect a short development cycle and a full debut sometime this fall. Related Video: News Source: Motor Trend Design/Style Infiniti SUV infiniti qx80 infiniti qx80 monograph