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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 Q50 Active Lane control is scarily self-driving

Occasionally, we post videos that require us to tell you not to try something at home. They usually involve some unsafe activity that requires a high-degree of skill and planning to achieve. This video, though, gets a more interesting disclaimer: Don't ever try this. Ever. Never ever. Period. Seriously, don't try it.
Some clowns in Germany decided to put the Infiniti Q50's Active Lane Control system to the test. For those not in the know, ALC can make small adjustments to keep the vehicle in the correct lane, a feature that's just starting to pick up steam. Instead of using it the way you're supposed to - with both hands on the wheel - these guys not only take both hands off the steering, but at one point climb out of the seat while traveling at freeway speeds, just to see how automated the combination of ALC and adaptive cruise control really are.
Yes, we've seen this sort of stunt before, but it was done in extremely controlled circumstances that didn't put the cars, the driver or any other motorists at risk and probably had appropriate emergency personnel on hand should the worst happen.

Next Infiniti FX to gain interior volume

The Infiniti FX, soon to be renamed QX70 thanks to the Japanese brand's convoluted naming scheme, is currently in the midst of its second-generation. And while we like the compact, sporty crossover's driving character a lot, it lacks the "utility" part of the CUV moniker. That lack of cabin space will be addressed in the future, though.
Automotive News recently sat down with Nissan's global design boss, Shiro Nakamura, to talk about the future of what he called "the icon of Infiniti." And while Nakamura-san admitted the FX/QX70's worth to the brand, its sales have long been something of a disappointment. "Exterior and styling-wise, it's very strong as an icon. But to be honest, its sales volume has not been as big as we wanted," a reality Nakamura believes is due largely to its tight cabin relative to its competition.
Finding the right balance might be difficult, though. The FX/QX70 is selling extremely well in both China and Russia, according to Nakamura, because of its looks. Altering that style in order to increase interior space risks alienating a new and important group of buyers for Infiniti. The designer put it best when he told AN, " It is selling well in China and Russia because it stands out. So we want to maintain that striking look." As it stands, we'll likely be living with the current vehicle for a few more years - AN doesn't expect the third-generation of the FX/QX70 to arrive until 2015 or 2016.