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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:

2016 Infiniti QX60 facelift spied

Initially launched in 2012 as the JX35 and rebadged in the brand's new nomenclature as the QX60 in 2013, Infiniti's three-row crossover is due for a facelift next year. And that's just what you're looking at here in this latest gallery of spy shots. Captured while undergoing testing here in the United States, the 2016 Infiniti QX60 is slated to benefit from revised styling front and rear. That means a new grille and headlights stylistically drawn from those on the QX50 and QX80, as well as a reshaped rear end with new taillights. The design changes ought to help further differentiate the QX60 from its more commonplace counterpart, the Nissan Pathfinder, on which it is based. Nissan dealers, after all, charge a good $13k less for their version than Infiniti dealers get for theirs, and customers want their premium wheels to look the part. And in the process, the updates aim to help the QX60 compete with rivals like the Acura MDX and Buick Enclave. A fresh set of wheels is almost a foregone conclusion whenever an automaker is trying to spruce up one of its models. And we can expect some updated equipment and revised materials inside as well. We wouldn't expect much in the way of mechanical upgrades under the hood. Infiniti recently recalibrated the continuously variable transmission for improved performance and refinement for 2015. Sources point towards an unveiling before year's end – which likely means the upcoming Los Angeles Auto Show later this month – before sales commence early in the new year.

Infiniti recalls Q50 and Q70 Hybrid models

Infiniti is issuing three separate recalls for its Q50 Hybrid and Q70 Hybrid and M35 Hybrid covering roughly 13,794 vehicles in North America.
The larger campaign listed by the National Highway Traffic Safety Administration covers 5,831 examples of its 2014 Q50 Hybrid (shown above) and 2014 Q70 Hybrid in North America, with 5,412 of those in the US and its territories. According to NHTSA, "due to a software error, the electric motor may stop working while the vehicle is being driven using the electric motor only," creating a "stall-like condition." To fix the fault, the company is reprogramming the motor inverter software, and owners should be contacted in mid-November.
The second recall covers just 890 2014 Q50 Hybrid and 2014 Q70 Hybrid models in North America, with 817 of those residing in the US. It's possible that their transmission housings were damaged during manufacturing, and on affected models, the housing could have a crack that might fracture while driving. Dealers will inspect the transmission and faulty examples will be replaced.