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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 Q30 prototype has entry-level luxury in the bag

The Infiniti Q30 Concept signaled the Japanese brand's clear intentions to join the growing global compact premium segment. Now, as evidenced by these images, we can see development of the brand's first compact hatchback is proceeding apace.
Our spies point to the similarity between this camouflaged tester and the Mercedes-Benz GLA-Class as further evidence to the cars' shared platform, although we'll admit, we don't necessarily see the similarities. The Q30's overall look, to our eyes, is like a scaled-down, lower-riding QX50, the model previously known as EX. Infiniti design elements, like its squat greenhouse, long hood and double-arch grille are all visible.
The Mercedes-Benz connection should be clearer under the hood, though, as the Q30 is expected to be powered by the same 2.0-liter, turbocharged Mercedes four-pot that's been leading the charge throughout the brand's entry-level models, namely the CLA-, GLA- and C-Class.

Nissan recalls 226k vehicles over airbag inflators

Nissan and Infiniti are the latest automakers to issue recalls involving faulty airbag inflators from Takata. The Japanese automakers have announced campaigns covering about 226,326 units from seven models built in the early 2000s because they contain the bad part in the passenger-side, front airbag. The affected vehicles include the 2002-2004 Nissan Sentra, 2002-2003 Pathfinder and 2002-2003 Maxima, and it also covers the 2002-2003 Infiniti QX4, 2002-2003 I35, 2003 FX45 and 2003 FX35.
Like the other vehicles with the faulty inflators, it's possible for the part to rupture during airbag deployment and spray metal shrapnel at occupants. Nissan and Infiniti have even included vehicles with replacement airbags in this campaign because those parts also could have been defective. Both companies were also part of the earlier regional campaign to fix cars in high-humidity climates where the problem has been found to be the worst.
As is the usual response, Nissan and Infiniti will notify owners of the affected vehicles and will make the repair at no charge. According to the filing with the National Highway Traffic Safety Administration, these fixes will commence around August 11. Scroll down to read the report from NHTSA, or read the full defect notice as a PDF, here.