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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:

10 automakers sued over keyless ignitions

Keyless ignition has rapidly proliferated throughout the auto industry to become a fairly normal feature on new cars. It's supposed to offer the convenience of keeping the fob in your pocket and just pressing a button to drive away. However, ten major automakers are now being sued in US District Court over claims that the system is dangerous, Reuters reports. The suit alleges that people are forgetting to shut off the engine, and the lack of an idle timer is the cause for 13 deaths by carbon monoxide poisoning and multiple injuries. The suit currently includes 28 plaintiffs, according to Reuters, but the lawyers are asking for class-action status to potentially add many more. The case goes after a major swath of the industry, including BMW, Daimler, FCA, Ford, General Motors, Honda, Hyundai, Nissan, Toyota, and Volkswagen, plus their related brands like Acura, Infiniti, Mini, and Lexus. In all, over five million vehicles are affected. The assertion here is that people walk away from their vehicle without shutting it off because they believe the engine shuts off automatically. If parked in a garage, carbon monoxide can build up, leading to poisoning. The lawyers claim automakers know this is a problem and also cite 27 complaints to the National Highway Traffic Safety Administration about the issue, according to Reuters. The plaintiffs are asking for an automatic shut-off and damages from the companies. These concerns have come up before, though. Toyota previously faced a lawsuit over a carbon monoxide death after a woman accidentally left her Lexus running. Also earlier this year, GM recalled 64,186 examples of the 2011-2013 Chevrolet Volt because owners weren't shutting them off. The problem resulted in two injuries, and the company released a software update to limit the idling time.

The Infiniti Q30 is dead! Long live the Infiniti QX30!

Remember that Infiniti Q30 hatchback we drove last month? It's not coming to the US. But it also is coming to the US. Let us explain. Because of our crossover-obsessed culture, it's easier for automakers to brand new offerings as CUVs rather than hatchbacks. Take one five-door, front-wheel-drive car, add a teensy bit of ground clearance and all-wheel drive, and boom, success! So because the Q30 and ever-so-slightly higher-riding QX30 are so darn similar, Infiniti made the decision to just sell them both under the QX30 name. This might seem stupid to most, but to Infiniti – and the crossover-buying masses – this is actually a pretty logical move. The QX30 arrives in mid-2016. On the base end there's the standard QX30, then there's the lower-riding QX30S, and finally, the higher-than-standard-riding QX30 AWD. They all come with a 2.0-liter turbocharged four-cylinder engine and a seven-speed dual-clutch transmission. They're also practically identical to the Mercedes-Benz A-Class and GLA-Class, except for the swoopy sheetmetal. But even Mercedes sells its cars as two separate model lines. If you're not confused enough yet, feel free to read more in the press release below. Related Video: Infiniti announces QX30 line-up in the AmericasInfiniti QX30 Premium Crossover set to go on sale in mid-2016 NASHVILLE, Tenn. – Infiniti today announced the line-up of its all-new QX30 premium active crossover for the United States and Canada. While sharing basic exterior and interior designs, the QX30 line will be offered in three unique versions, each with its own front and rear fascia, wheel design and interior themes: QX30: The crossover's highly sculpted exterior, unique stance and asymmetric cabin design exemplify Infiniti's design-led approach to product development. This version is sold in Europe and other regions outside of the Americas under the Q30 name. In the Americas, this model will be front-wheel drive. QX30S: With a lower stance, aggressive front and rear fascia, cross-drilled front brake rotors, 19-inch wheels and performance tires, the QX30S is the sports version of Infiniti's new premium compact line. It was shown at this year's Los Angeles Auto Show and is sold in other markets as the Q30S. QX30 AWD: With an intelligent all-wheel drive system, slightly higher ride height and off-road inspired front and rear valence panels, the vehicle is able to take on urban, suburban and winding rural roads in all driving conditions.