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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's Vision for Gran Turismo revealed in full [w/video]

Just about any car has to be designed with some sort of limitations, whether it's a production car that has to be usable on the road, a racecar that has to comply with regulations, or even a concept car that does, at the end of the day, actually need to be crafted out of real materials and wheeled onto a stage. But the Vision Gran Turismo series imposes no such limitations. Designed only for a virtual reality, the project allows for designers to craft a purely fantastical design whose limits fall barely short of their own imaginations. It presents companies with the opportunity to represent their brand as they want to, so it comes as little surprise that every automaker from here to Hong Kong has been lining up to take part. And the latest is Infiniti. Previewed in a pair of teaser renderings barely over a week ago, the Infiniti Concept Vision Gran Turismo is a suitably striking addition to the virtual world of the Gran Turismo video game franchise. Designed at the company's Beijing studio, the brief calls for a 4.5-liter naturally aspirated V8 hybrid powertrain, with a front mid-ship layout driving a rear transaxle for ideal 45/55 front-rear weight distribution. Beyond that it's all flowing forms, extreme aero and signature Infiniti design cues like a widened version of the brand's trademark grille shape and the kink in the rear pillar. It's got butterfly doors hinged ahead of those spindly mirrors, center-lock alloys crafted from carbon fiber, deeply sculpted aerodynamic elements, a large boomerang-shaped rear wing and aggressive long-hood/low greenhouse proportions. It's F1 meets GT, to hear Infiniti tell it, and whether you've got a PS3 and a copy of Gran Turismo 6 to play around with it or not, you can check it out in the images above and the video below. This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings. Introducing the INFINITI CONCEPT Vision Gran Turismo The "INFINITI CONCEPT Vision Gran Turismo" has been released on "Gran Turismo 6", available exclusively on PlayStation®3. Infiniti has continued to break new ground in design since the brand was first established. This is a sensuous GT car brimming with the Infiniti philosophy. How to receive it After Update 1.15 has been installed, the car can be purchased from the [Vision GT] area within the [CARS] section in "My Home" (here, you can also find the car's presentation movie).

Weekly Recap: Automakers rethink the definition of luxury

Variety is the spice of life, but it's becoming a prerequisite for luxury carmakers in the ultra-competitive US market. The Detroit Auto Show was strong evidence of this reality. It's not enough to offer attractive and well-appointed cars and SUVs anymore. Luxury brands that want to be competitive need to invest in everything from high-powered supercars to clever hybrids. To be relevant, you need to be green and mean – and everything in between. As General Motors product chief Mark Reuss said after the reveal of the 640-horsepower Cadillac CTS-V: "We are not leaving anything on the table." He was speaking for Cadillac, but he might as well have been speaking for the luxury car market. The CTS-V debuted in Detroit about an hour after Lexus surprised showgoers with the reveal of the RC F GT3 race car and then announced ambitious plans to return to competitive racing. That almost overshadowed the fact Lexus had just revealed another potent addition to its growing F line, the 467-hp GS F. View 20 Photos But for luxury brands, it's not just about maximum horsepower for well-heeled enthusiasts or decadent amenities for the Grey Poupon set. Strong competition from all corners has forced automakers to refine and expand their lineups in ways unforeseen even a few years ago. Case in point: Mercedes-Benz finally has an answer to the BMW X6, rolling out the GLE coupe in Detroit. The X6, which blends coupe-like styling cues with some of the functionality of an SUV, debuted in 2008. Back then it was a punchline, but seven years and more than 260,000 sales later, the X6's success has compelled Benz to respond. Mercedes – one of the strongest proponents of diesel technology – also debuted the C350 plug-in hybrid sedan, which promises a range of 20 miles on electricity, though fuel economy figures were not announced. The car pairs Mercedes' well-received 208-hp turbocharged four-cylinder with an electric motor for total output of 275 hp and 443 pound-feet of torque. Meanwhile, Infiniti will add the Q30 hatchback to its lineup by the end of the year, new president Roland Kruger reiterated in Detroit. It's expected to be joined by a crossover variant, and the additions will help strengthen Infiniti in the United States and abroad. "While we're expanding our product line, we're also expanding our market reach," he said. That's something echoed by Jaguar executives, who are preparing to launch the brand's first crossover, the F-Pace, in 2016.