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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:

US buyers show little interest in big hybrids

The idea of producing large, luxury-vehicle hybrids is turning into a "what were they thinking?" exercise in futility, USA Today reports. General Motors is discontinuing hybrid versions of the Cadillac Escalade, Chevrolet Tahoe and GMC Yukon SUVs, while Mercedes-Benz and Toyota's Lexus division are doing the same with their S-Class hybrid and LS hybrid sedans, respectively. The culprit? Big price increases for fuel economy improvements that border on the unimpressive. Granted, the Escalade hybrid gets 31 percent better fuel economy than the standard version, but that still maps out to a combined fuel-efficiency rating of just 21 miles per gallon. That can be seen as a worthwhile increase, if it didn't cost over $8,000 extra. The 2014 Escalade Hybrid, for example, starts at $74,425 while the non-hybrid can be had for $66,295. Meanwhile, the Lexus full-size hybrid costs $6,000 more than the regular version but only gets 1-2 mpg better combined fuel economy. The result of all these high costs? Low sales. Through April, GM sold 82 of its hybrid SUVs and pickups, down from 541 a year earlier. And the LS hybrid sales were in single-digit territory for April. That isn't stopping Lexus from promoting its hybrids as the right solution (with the wrong facts), though. There are still automakers giving big hybrid vehicles a shot, though. Nissan's Infiniti division is selling a hybrid version of its QX60 and says an impressive 10 percent of QX60 buyers choose the hybrid, which costs just $3,000 more. Looks like money talks. Featured Gallery 2015 Cadillac Escalade: First Drive View 35 Photos News Source: USA TodayImage Credit: Copyright 2014 Brandon Turkus / AOL Green Infiniti Lexus Mercedes-Benz Hybrid lexus ls gmc yukon mercedes-benz s-class infiniti qx60 chevrolet tahoe

New Infiniti QX crossover: expect a pretty Q60 on stilts

When the doors open at the Beijing Motor Show later this month, Infiniti will have a new concept to show off dubbed the QX Sport Inspiration. It takes the form of a mid-size sport-ute that could preview the next-generation QX70 crossover. The Japanese luxury automaker isn't giving us much to go on aside from the decidedly enigmatic teaser image above. But we're expecting the crossover concept to follow closely along the stylistic lines of the Q60 coupe concept we saw in Detroit earlier this year – albeit in a taller form with more space inside. And that's no bad thing, considering how sexy that two-door show car was. Infiniti tells us to anticipate such design elements as floating A-pillars and wide wheel arches, giving it a forward-looking and aggressive appearance that will foreshadow the company's next generation of crossovers. Watch this space for more as the Chinese auto expo prepares to open its doors on April 25. Related Video: This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings. INFINITI QX SPORT INSPIRATION BREAKS COVER AHEAD OF 2016 BEIJING AUTO SHOW - First glimpse of exciting new SUV concept from Infiniti - Inspired by 'Powerful Elegance' form language - World premiere at 2016 Beijing Auto Show Rolle, Switzerland – Infiniti has revealed a first glimpse of its daring new QX Sport Inspiration, an exploration of the brand's vision for a next-generation, mid-size premium SUV. Inspired by Infiniti's 'Powerful Elegance' design philosophy, the QX Sport Inspiration features the brand's design hallmarks and stands out thanks to its striking design details and sophisticated craftsmanship. The concept rendering illustrates SUV-like proportions highlighted with wide muscular lines reminiscent of the Q60 Concept, floating A-pillars and extra-wide wheel arches. Alfonso Albaisa, Infiniti Executive Design Director, commented: "The QX Sport Inspiration expresses a power and purpose that is uniquely Infiniti. With a flowing, natural aesthetic, this concept demonstrates how Infiniti can offer something new and exciting with future QX SUV models." The Infiniti QX Sport Inspiration makes its global debut at the 2016 Beijing Auto Show (press days on April 25/26, public days from April 29 – May 4).