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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 Q Inspiration Concept shows its face

Update: Infiniti released a second image of its Q Inspiration Concept with a press release about sales. We're not sure why, but we're not complaining and have added it above. The original rear three-quarter image is below in the text. Following a teaser image and some cryptic hints from designers, Infiniti has mostly revealed its concept for the Detroit Auto Show. It's called the Q Inspiration Concept, which for having "inspiration" in the name, is actually a rather uninspired name. But that's OK, because what it lacks in clever naming it makes up for in a beautiful fastback body. When the teaser was released, one of the designers mentioned the car would have a "long cabin," and that's no exaggeration, as the greenhouse reaches nearly to the tail edge of the car. It's a roofline that is highly reminiscent of the Audi A7. And as such, it would make a lot of sense for this Infiniti to be a hatchback, too, especially if it reaches production. We can't say for sure if this concept has a hatch, though, since there are some panel gaps at the base of the D-pillar and the Tesla Model 3-style rear pane of glass suggests this concept is technically a sedan. Unlike the Audi A7, the rest of the Infiniti is as curvy as the roof. There's hardly a crease anywhere, and it looks muscular with the big bulging front and rear fenders that flow effortlessly into each other. The clean exterior is accented by a lack of exterior door handles and what look to be cameras for side mirrors. The contrast to the organic curves comes from the nose and the wheels. The area where the grille would be is more chiselled and aggressive than the rest of the body. The wheels also have hard edges and lots of complicated elements that don't quite fit the organic theme of the rest of the car. Still the car overall is very striking and graceful. The press release continues to emphasize new powertrains, proportions, and the future design direction of Infiniti. As such, we suspect that this car uses, at minimum, a version of Infiniti's variable-compression engine, and more likely features extensive electrification, if not a pure EV powertrain. The lack of a large opening at the front would seem like further evidence the car utilizes electricity at some level. The car will make its full debut on Jan. 15. Related Video: Image Credit: Infiniti Green Detroit Auto Show Infiniti Hatchback Luxury Sedan 2018 detroit auto show

Infiniti shows off the new Q50 engine lineup in Chicago

Infiniti has a raft of engine options it's rolling out on the Q50 sedan. We found out about most of them a couple of months ago, but they're now confirmed in all their turbocharged glory. And they'll all be showcased this week at the Chicago Auto Show. The base engine is a 2.0-liter turbo four based on a Mercedes design and built at the new joint-venture engine plant in Tennessee. The engine produces 208 horsepower and 258 pound-feet of torque and will be available in the Q50 2.0t in either rear- or all-wheel drive. If those specs strike you as familiar, they're the same that you'd find in the Mercedes CLA250 and GLA250, both of which similarly make their 4Matic traction optional, but come standard in front- (not rear-) drive form. Above the four-pot sits a new 3.0-liter twin-turbo V6 that replaces the naturally aspirated 3.7-liter unit and will be available in two states of tune. The 3.0t model offers 300 hp and 295 lb-ft, but the performance model – dubbed Q50 Red Sport 400 – cranks it up to 400 hp and 350 lb-ft. Both versions come mated to a seven-speed automatic transmission and either rear- or all-wheel drive. The fourth powertrain options carries over in the form of the Q50 Hybrid, which still pairs a naturally aspirated 3.5-liter V6 to a 50-kW electric motor for a combined output of 360 hp. So if you like your sports sedan to come with some manner of assist, the Q50 offers plenty of choices. But if you're in the atmospheric camp, we're afraid you'll have to look elsewhere. Related Video: Infiniti Presents Three New Q50 Sports Sedan Engines for the First Time at the 2016 Chicago Auto Show - Q50 Red Sport 400 offers new 400-horsepower VR-series 3.0-liter V6 twin turbo engine - Advanced 300-horsepower VR V6 twin-turbo version shown for the first time in Chicago - Pair of new V6 twin turbo engines joined by new 2.0-liter turbo inline-4 rated at 208 horsepower CHICAGO (Feb. 11, 2016) – Infiniti today revealed the full lineup of new advanced engines for its Infiniti Q50 sports sedan at the 2016 Chicago Auto, including two 3.0-liter V6 twin turbo engines and a 2.0-liter 4-cylinder turbo engine. The trifecta of new powerplants will be available beginning this spring. Joining the three new engine-equipped Q50 models – designated the Q50 2.0t, Q50 3.0t and Q50 Red Sport 400 – on display at the country's oldest and best-attended auto show are the redesigned 2016 QX60 crossover and the all-new QX30 premium active crossover.