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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

Production Infiniti QX80 will be revealed at Dubai Motor Show

Back at the New York auto show, Infiniti showed the QX80 Monograph concept, which indicated what direction the updated production QX80 would go. At this year's Dubai auto show, we'll get to see how close the QX80 gets to the concept, since that's where the production car will debut. And thanks to some teaser images from Infiniti, we get a solid sneak peak at the SUV. Immediately apparent is that many key styling cues have made it to production, but the overall car has been notably toned down from the already relatively conservative concept. We're glad to see that the headlights have completed their trip up the front fascia, matching up better with the corporate trapezoidal grille and providing a wider, more aggressive look. The jutting, Leno-esque lower valence of the concept has been reduced to more modest proportions, but the basic shape of the lower grilles remains the same. It also appears that the fenders haven't been pumped up as much as the concept's. The mild redesign matches what will probably be very mild mechanical changes. Previous reports have said that the new QX80 will retain the same platform and powertrain as the current model. We wouldn't be surprised, though, if there have been some suspension tweaks and maybe a few extra horsepower squeezed from the current 400-horsepower 5.6-liter V8. Also, though Infiniti hasn't revealed when the SUV will go on sale, we would expect it to arrive at dealers early next year. Related Video: Featured Gallery 2019 Infiniti QX80 Image Credit: Infiniti Infiniti SUV Luxury Off-Road Vehicles dubai motor show infiniti qx80 infiniti qx80 monograph

Infiniti QX55 spied for the first time looking sleek

The Infiniti QX55 is well on its way to joining the crossover coupe ranks in 2020, and here’s our first view of the car out testing. Infiniti is expected to debut the ‘ute in the first half of 2020, so it wonÂ’t be long till we see it without the swirls and body cladding on it, too. As the name suggests, the QX55 is a derivative of the QX50 crossover, which was just completely redesigned for the 2019 model year. Infiniti debuted its new VC-Turbo (variable compression) engine technology in that crossover, and itÂ’ll certainly be along for the ride in the QX55 as well. The latest teaser suggested that Infiniti would be greatly differentiating this crossover coupe to the rest of the field by giving it a uniquely long tail for more cargo space. That tail still exists on the vehicle caught out testing, but it doesnÂ’t look drastically different than other vehicles of its ilk. To that end, rear cargo space is likely to be slightly down from the more traditionally shaped QX50, even if itÂ’s slightly better than competitors. However, rear seat space appears to be better than expected. The roof itself doesnÂ’t taper at a horribly steep angle into the rear passengerÂ’s heads, and the rear windows are large enough that they may only cause minor claustrophobia. Most of everything except for the rear end will likely resemble the QX50 verbatim, so itÂ’s just the back half that weÂ’re waiting for in the reveal. The grille itself has the same waveform shape as the normal QX50, and the body creases in the hood and doors protruding through the skin-tight camo resemble it as well. Even the wheels on this tester are exactly the same design as the rollers used on the production QX50. When it does come out, the QX55 will join its German competition in this stylish but utility-hampered segment. The BMW X4 and Mercedes-Benz GLC Coupe will be the main targets when we expect this car to hit dealer lots later this year. Related Video: