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A look inside Infiniti's variable-compression engine

We're sympathetic to anyone who had trouble understanding what's going on with Infiniti's new variable-compression engine. While we got a full tech briefing on the novel VC-Turbo back in August, the visual aids were lacking. The cutaway engine Infiniti brought to the Paris show fixes all of that. You can thank the little green and pink lines on the cutaway for making the whole idea a little more clear. Click through the gallery to see two lines – one green and one pink – that represent the different strokes allowing for different compression ratios. Remember, the compression ratio is the amount of volume in the cylinder on intake compared to the amount at the end of the compression stroke. Leave more room at the end and you lower that ratio. The length of the stroke doesn't change with this system, but where it sits along the cylinder does. Hence those two lines. The variable compression ratio allows this new turbocharged engine to maximize fuel economy when the turbo isn't needed by raising the compression ratio. It will see its first use in the next Infiniti QX50 crossover, previewed by the QX Sport Inspiration concept that's also on display in Paris, and has performance targets of 268 horsepower and 288 pound-feet of torque. After, it will migrate to other Infiniti and Nissan vehicles, with transverse front-drive-based applications first in line. Eventually, it's likely to completely replace Nissan's corporate 3.5-liter V6. We'll be poking around the engine a little more in Paris today to try and get some more info. For now, enjoy those cutaway images and those friendly little lines. Featured Gallery Infiniti VC-Turbo engine cutaway View 14 Photos Paris Motor Show Infiniti Nissan Technology Emerging Technologies engine 2016 paris motor show

Infiniti hires Sebastian Vettel as Director of Performance

Remember when, during the Grand Prix of the Americas weekend last November, we told you that Sebastian Vettel had worked with Infiniti on the new G Coupe and that there'd be more of that kind of involvement on the way? It's been made official with the three-time Formula One World Champion being named Infiniti's Director of Performance.
Although the announcement is fresh, Vettel's time on the job isn't, Infiniti saying that Vettel went to Japan, the Nürburgring and the Circuit de Catalunya to assist in the development of the Q50 sedan.
When we spoke to Andreas Sigl, the man in charge of Infiniti's F1 collaboration with Red Bull, about the tie-up he had also said, "Like Mercedes has AMG and BMW has M - whether it's called IPL or not - we want to have something in that space." If the brand is still serious about that, Vettel's chops could help them deliver the kind of performance they'd need as upstarts to challenge the ringleaders of that particular hi-po circus.

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.