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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 hires Sebastian Vettel as Director of Performance

Remember when, during the Grand Prix of the Americas weekend last November, we told you that Sebastian Vettel had worked with Infiniti on the new G Coupe and that there'd be more of that kind of involvement on the way? It's been made official with the three-time Formula One World Champion being named Infiniti's Director of Performance.
Although the announcement is fresh, Vettel's time on the job isn't, Infiniti saying that Vettel went to Japan, the Nürburgring and the Circuit de Catalunya to assist in the development of the Q50 sedan.
When we spoke to Andreas Sigl, the man in charge of Infiniti's F1 collaboration with Red Bull, about the tie-up he had also said, "Like Mercedes has AMG and BMW has M - whether it's called IPL or not - we want to have something in that space." If the brand is still serious about that, Vettel's chops could help them deliver the kind of performance they'd need as upstarts to challenge the ringleaders of that particular hi-po circus.

Nissan Skyline Nismo gets a more powerful Z engine

Recent rumors claim the Nissan Skyline will morph into an electric crossover in the coming years. Regardless of whether or not they're true, the company isn't done with the current, gasoline-powered Skyline yet and it launched a limited-edition, Nismo-branded model in Japan. If you're experiencing deja vu, it's likely because the Nissan Skyline is sold as the Infiniti Q50 in the United States. We even get a range-topping, performance-oriented trim level, the 400-horsepower Red Sport 400. The Skyline Nismo goes further, though, by adopting an evolution of the twin-turbocharged, 3.0-liter V6 that powers the Red Sport 400 and the Z coupe. It's rated at 414 horsepower and 404 pound-feet of torque. For context, the Q50 and Z pack 400-horsepower and just 350 pound-feet of torque. The Nismo's engine spins just the rear wheels via a seven-speed automatic transmission, whereas America's Red Sport 400 is available with all-wheel drive. Nissan didn't settle for adding a few horses to the cavalry, slapping a couple of "Nismo" emblems to the body, and calling it a job well done. Its engineers redesigned the Skyline's suspension system, installed fade-resistant brake pads and recalibrated the various vehicle control systems, including the ABS, to deliver a sportier driving experience on and off the track. The brand even went as far as securing the windshield and the rear window with a type of adhesive normally reserved for the GT-R Nismo to improve rigidity without adding weight.  Visual updates are part of the Nismo package as well, including 19-inch Enkei wheels wrapped by tires that are wider than the ones worn by the regular-production model, an old-school "GT" emblem on each fender, and a body kit that includes a front splitter and side skirts. These updates aren't just for show: Nissan notes the redesigned grille opening helps channel additional cooling air to the radiator and the oil cooler. The Nismo treatment also permeates the cabin. The front passengers sit on Recaro sport seats with red inserts, while the driver faces a steering wheel with a red 12-o'clock mark as well as a new-look tachometer with a red ring and a small "Nismo" logo below the needle. Enthusiasts who want an even rarer version of the current-generation Skyline can try their luck at scoring the Nismo Limited.