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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:

Infiniti Qs Inspiration shows itself before Auto Shanghai

Infiniti's shown off a bit of the Qs Inspiration concept before debuting the creased contrivance at Auto Shanghai next week. The concept serves a few purposes, the first to reimagine a future for sports sedans on a planet of crossovers and SUVs. The result blends a fastback with high sides that connect low ground clearance below and an elevated seating position above. The Japanese luxury maker is all about sedans, the Qs Inspiration signaling how a carmaker watching the bottom line can maintain its interest in the passe bodystyle. The concept previews a production model, and perhaps the design language and lingo we'll see spreading through the range. We're not sure how the low floor and higher roof work out in the cabin, but Infiniti mentions a "low-mounted powertrain and potent e-AWD system." That's undoubtedly the promise of the "all-new flexible architecture developed to accommodate high-performance electrified powertrains." Production-izing for a non-electric version would mean laying in a grille for the ICE, but an electrified version would have plenty of room for batteries and e-motors. Before that retail model, it's possible we'll see Qs Inspiration cues on the Q50 and Q70 sedans. Take a long gander at the profile and the way the roof slopes, and you'll notice an elongated GT-R glasshouse profile. On top of that, before Infiniti released official photos, a few images leaked from China showing other angles of the concept. The rectangular steering wheel and massive digital dash cluster probably aren't going anywhere beyond Shanghai, but if Infiniti can bring that glass roof to production, that's a win in our book.

Recharge Wrap-up: Infiniti PHEV, free biodiesel?

In certain cases, biodiesel is so inexpensive that it is essentially free to use. Thanks to the decline of crude oil prices, other fuels, including biodiesel, have been following the trend. After setting new renewable fuel mandates, Congress also reinstated a $1-per-gallon tax credit for refiners. With such low prices, Midwest refiners are paying as low as $0.645 per gallon. In California, however, additional incentives mean some customers could get money back on the biodiesel they use, depending on the deals between producers and blenders and whether or not they share the credits. Read more from Ag Web. Infiniti is considering adding plug-in hybrid technology to its vehicle lineup. Infiniti CEO Roland Krueger says that it will leverage the EV expertise from Nissan for the electrification of its cars. Don't hold out for a luxury version of the Leaf wearing an Infiniti badge, though. When asked if an all-electric Infiniti were out of the questions, Krueger says, "Performance and the range are very important in the premium segment, so we believe that for Infiniti a hybrid or plug-in hybrid is the right proposition at this time." Read more from Automotive News Europe. Hyundai Tucson Fuel Cell drivers in California have logged a cumulative 1 million miles. With nearly 100 Tucson Fuel Cells sold so far in Southern California, these drivers have prevented some 385 tons of CO2 emissions. "Breaking the seven-figure consumer mileage barrier gives us new vision into the unlimited zero-emissions potential for Hyundai's fuel cell vehicles," says Hyundai's Mike O'Brien. "With our growing fleet of hydrogen-powered Tucson fuel cell vehicles accumulating one million miles this quickly, one can only imagine the unlimited potential for a zero-emissions hydrogen vehicle future." Read more in the press release below. Hyundai Tucson Fuel Cell Drivers Accumulate More Than One Million Zero-Emission Miles Cumulative Zero-emissions Miles by Southern California Fuel Cell Drivers Breaches the Seven-Figure Mileage Barrier Fuel Cell clean H2O emissions effectively replaced approximately 385 Tons of CO2 emissions compared with gasoline vehicles of similar size FOUNTAIN VALLEY, Calif., Feb.