1999 Infiniti Q45 Base Sedan 4-door 4.1l 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:

2014 Infiniti Q50 priced at $37,605*

Infiniti has released full pricing information for its new 2014 Q50 line, which, as you're probably aware, replaces the well-liked G-series sedan. You may be wondering why this is news, as Infiniti announced pricing for its new Q50 sedan back in March. Apparently, though, those earlier prices applied only to the special pre-sell offer announced earlier this year and are only good for cars ordered by October 31, 2013.
Starting in November, base 2014 Q50 models with the automaker's 328-horsepower 3.7-liter V6 engine will begin at $37,605 (*including a $905 destination fee), while the sportier Q50S model will begin at $44,105. Adding all-wheel drive to either model costs an additional $1,800 over the standard rear-wheel-drive models. Regardless of engine or whether it's rear- or all-wheel drive, the Q50 comes with a seven-speed automatic transmission.
Opting for the 2014 Infiniti Q50 Hybrid will get the buyer a powertrain consisting of a 3.5-liter V6, a 50kW electric motor and a lithium ion battery that offers up a total power output of 354 hp and a highway fuel mileage rating of 36 miles per gallon, all for a starting price of $44,855, which includes the Premium group. The most expensive version of the new sedan is the Q50S Hybrid with all-wheel drive. That model carries an MSRP of $49,055.

Infiniti gets boiled down to four P's: Performance, passion, precision, provocation

So then we asked, "Well, what does that mean?"
We met Andreas Sigl, the global director of Infiniti's Formula One involvement (that's him above on the right), at the US Grand Prix in Austin last year, and our questions to him were aimed at understanding what Infiniti was doing and where it intended to go. In spite of regard for its products and increased sales, few outside - and even inside - Infiniti seemed to have a clear idea of what the brand stood for.