2001 Infiniti Qx4 Base Sport Utility 4-door 3.5l on 2040-cars

Auto blog

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 Q30 Concept might be the cleverest Q model yet

When we first got official word of the Infiniti Q30 Concept, the Japanese automaker said that the crossover's "harmonious contrasts and dissymmetric philosophy" would "make an emotional connection with customers spontaneously." Now, we might not be heads of design studios or directors of marketing departments, but we're pretty sure we can translate that to: "The production Q30 will compete with the Audi A3 and Mercedes-Benz CLA-Class."
In all seriousness (if we can say that of a concept car painted a sort of rose metallic), the Q30 concept looks fetching here in Frankfurt; its rather convoluted and flowing bodywork just carried off successfully because of its grownup hatchback proportions and, frankly, huge wheels. The Q30 could seemingly slot into the current, attractive Infiniti range of production cars and not look amiss (though we'd prefer a color palette that looks a little less like Grandma's sitting room sofa).
Look above for our live images of the Infiniti Q30 Concept from the show floor in Frankfurt, below for stock pictures of the thing, or scroll down to re-read the breathless press release.

Infiniti G37 to live through MY 2015, sell alongside Q50

Infiniti has officially confirmed news we broke last month about its G37 sedan - that it will live on in showrooms alongside its erstwhile replacement, the 2014 Infiniti Q50, a model that goes on sale this week. And it's sticking around for quite a while - it will be sold through the 2015 model year.
In order for the G37 and Q50 to not rub shoulders, Infiniti is rolling out an amended G lineup, complete with lowered pricing. The G37 will stick around in Journey and all-wheel drive trims, both powered by the same 3.7-liter VQ-Series V6 engine, and only two option groups will be available, Premium and Navigation. The 2014 G37 Journey will start at $32,550, while the G37 Sedan AWD will run $34,150 (both are subject to a $905 destination fee).
The 2013 G37 had been priced from $38,255 delivered as of earlier this week, so the price drop is significant, likely bringing the base MSRP more in line with where transaction prices had been on the aging model. The new pricing, which takes effect August 6, should also allow the G37 gain consideration amongst shoppers of smaller-engined rivals like the BMW 320i while the Q50 waits on a turbocharged four-cylinder and diesel engine from Daimler. For comparison's sake, the larger, more tech-rich Q50 will start at $37,605 delivered.