2003 Infiniti Q45 Base Sedan 4-door 4.5l on 2040-cars

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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:

The Infiniti Q60 Black S gets an F1 KERS system

This is the Infiniti Q60 Black S that will be debuting at the Geneva Motor Show, sporting some intense bodywork and an F1-inspired powertrain. It exists to draw a closer parallel between the Renault F1 program and the Infiniti brand – a relationship that's surely easier to understand in Europe than it is here, but so be it. Other than the wild bodywork, which includes a heavily sculpted front fascia, bigger side sills, two howitzer-sized exhaust pipes, and a massive rear wing, there's the F1-inspired KERS system. Exactly what that will be is up in the air; the F1 system is complex and expensive. While Infiniti says they want to engineer a road-going solution that's as similar as possible to the F1 KERS system, it's likely it'll be watered down a bit for production. View 12 Photos All in all, the 3.0-liter, twin-turbo V6 and the KERS system should combine to produce about 500 horsepower. That's all well and good, if it makes it out of concept car purgatory. Remember the Q50 Eau Rouge, the last Infiniti that got car enthusiast's undivided attention? Well, it got canceled. We're not sure what the appeal of an F1 tie-in would be to American shoppers, so who knows if the Black S will emerge as a rest-of-world special, or at all. In any event, we should have more details around Geneva, so stay tuned. Image Credit: Live photos copyright 2017 Drew Phillips / Autoblog.com Geneva Motor Show Infiniti Coupe Concept Cars Performance Videos Original Video 2017 Geneva Motor Show infiniti q60

Infiniti previews its own Vision Gran Turismo

Every automaker and its parent company is lining up to design its own set of wheels for the GT6 as part of the Vision Gran Turismo program, and this latest one comes from Infiniti. Although nothing in the way of details were disclosed at this point, the two teaser images released today show that, like most of its compatriots, Infiniti's design is for a low-slung, track-focused, two-door sports car. Its long bonnet suggests a front-engined layout, with an intriguingly ovoid windshield framed by raised buttress A-pillars and Infiniti's signature dog-leg rear pillars. The aerodynamic profiling looks suitably advanced for a mythical beast like this one, with deep extractor vents cut into the hood, intersecting side sills running from the front brake vents, an enormous rear diffuser and an even bigger rear wing. More than that we couldn't tell you at this point, but we're sure video racers will enjoy driving this super-Datsun as much as the Nissan Concept 2020 Vision Gran Turismo released back in June.