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Infiniti's variable compression engine in the 2019 QX50 is the first of its kind

The world's first variable compression ratio engine is here, in a production car. That car is the 2019 Infiniti QX50, debuting this week at the Los Angeles Auto Show. The midsize crossover has seen a refresh that has brought it an all-new platform together with new driver assist features, but it's the engine that's the centerpiece here. Nearly everything is continuously variable under the hood of the QX50 – not only the new shift-by-wire XTRONIC CVT. The new VC-Turbo gasoline engine is able to change its compression ratio from 8:1 to 14:1, or anything in between depending of the driving situation; whether there is need for top-end power or turbodiesel-like torque from low revs, or optimized fuel economy. The pistons' reach is continuously adjusted by an electric "Harmonic Drive" motor, which controls a multi-link system, affecting the top-dead-center of the pistons and changing the compression. The engine can also switch between efficiency-maximizing Atkinson cycle and regular combustion cycle, on the go – and there's both multipoint injection and gasoline direct injection employed. The result is 268 horsepower at 5,600 rpm and 280 pound-feet of torque at 4,400 rpm; good figures for a 2.0-liter four-cylinder gasoline engine with a single-scroll turbocharger. Infiniti says that the FWD version's fuel economy of 27 miles per gallon combined is 35-percent better than the previous-generation V6 engine; in AWD guise, it reaches 26 mpg, which is a 30-percent improvement. The new engine is pretty much all-aluminum, but the vaguely magical-sounding "transformative multi-link components" behind the variable compression system are made from high-carbon steel alloy. The engine's multi-link system also enables it to do away with any balancing shafts, and Infiniti compares its smoothness to a V6 rather than a regular four-cylinder. In addition to the aforementioned tech, the VC-Turbo engine has the world's first active engine mount vibration damping system to smoothen its operation even further. Related Video:

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 QX30 Concept teased ahead of Geneva reveal

Nearly a year and a half after Infiniti unveiled the first Q30 Concept at the 2013 Frankfurt Motor Show, the company is preparing to unveil a high-riding version of the concept, wearing the QX30 moniker, ahead of next month's Geneva Motor Show. While we've yet to receive any details on what to expect of the new QX30 Concept, Infiniti has issued a single teaser image of the car's shapely backside, revealing a pair of trapezoidal exhausts that have been integrated into the rear bumper. That bumper sits particularly high to accommodate what looks to be a small hatch with a prominent space between the slim ribbons of the LED taillights. Similarities to the Q30 hatch, meanwhile, are obvious. The taillights are similarly shaped, as is the tailgate and the integration of the dual exhausts (although they are shaped differently on the QX30). Of course, as soon as Infiniti bothers to release the full and complete details for its upcoming concept, we'll be sure to relay those on to you. Until then, have a peek at both the Q30 and the QX30 and let us know what you think in Comments. Infiniti gears up for premiere of QX30 Concept in Geneva Hong Kong – Infiniti will take the covers off the QX30 Concept at the Geneva International Motor Show next month. The QX30 Concept is the Infiniti design vision which will inspire a new premium compact crossover targeted at a new generation of premium customers. Set to be revealed at Infiniti's press conference, scheduled for 14:30 on 3 March in Geneva, the QX30 Concept aims to reignite the premium compact segment with a distinctive approach to design that looks beyond the practicality and conformity expected of the segment. The potential customers for such a concept are searching for a product to suit their 'urban week and get-away weekend' lifestyle and the QX30's compact footprint matches that. Combining the sleek lines of a coupe with the rugged looks and commanding seating position of a crossover, the QX30 Concept foreshadows an urban explorer which is equally at home in the city as it is on the open road.