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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

These are the top luxury cars bought by people entering the segment for the first time

Let's say you just got a big promotion at work or the kids are moving out of the house, and you finally have some extra money. You decide to blow it all at once and treat yourself by upgrading your ride. Naturally, you look to a luxury automaker. What do you choose?
Models like the Audi A3 and Mercedes-Benz CLA-Class may be tailor-made to introduce buyers to the premium segment, but a new study finds that they don't garner the highest rates of non-luxury customer conquests. It turns out that a Volvo leads among folks moving up to a premium brand, and it isn't even one that's made anymore, at that.
A recent study by Polk and IHS Automotive looked at what models had the highest rates of buyers upgrading from a non-luxury segment. The information comes from its new vehicle registration data through April 2014. All ten top models boasted conquest rates of over 50 percent, but the Volvo C70 led the field with 68.01 percent of its customers coming from non-premium brands.

Infiniti's QX50 Concept debuts in oh-so-close-to-production form in Detroit

Infiniti debuted the new QX50 concept today at the Detroit Auto Show, a preview of the midsize crossover set to hit the market soon and an evolution of the 2016 QX Sport Inspiration. This previews the followup to the current QX50, which debuted way back in 2007 as the Infiniti EX. The QX draws on Infiniti's current design language and looks like a slightly shortened version of the larger QX60. While this is still a concept, don't expect the full production version to stray too far from what we see here. Infiniti's press release is full of phrases like "driver-centric, passenger-minded" design, but in reality it's just a handsome but mostly traditional shape. The big news is that the QX50 will be the first application of Infiniti's trick variable-compression 2.0-liter turbocharged inline four. The engine's design promises both high horsepower and high fuel economy. Infiniti is claiming 268 horsepower and 27-percent better fuel economy when compared to the outgoing model. View 17 Photos Also coming on the new QX50 are a suite of active safety and autonomous features. While the details on both are extremely vague, Infiniti claims that the autonomous tech will allow the driver to retain ultimate control over the vehicle. That seems a bit counter to how autonomous driving works, so it will be interesting to see how the system actually functions. The active safety systems are said to be proactive, with future versions using lasers, radar, and cameras. While the outgoing QX50 was a rear-wheel-drive swoopy crossover, this new model appears to send power to the front wheels. Infiniti's release doesn't expressly say, but it does hint towards it with notes about a shorter hood and a "front-biased intelligent all-wheel drive system." This makes sense, and we don't see many enthusiasts lamenting the loss of a dated, rear-drive crossover. No word on pricing or when we'll actually see a production version. The current model turns 10 this year, albeit with a mid-cycle refresh. Look for news of a final production version very soon. Related Video: This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings. Related Gallery Infiniti QX50 Concept View 24 Photos Image Credit: Live photos copyright 2017 Drew Phillips / Autoblog Design/Style Detroit Auto Show Infiniti Technology Emerging Technologies Crossover SUV Concept Cars Videos Original Video 2017 Detroit Auto Show infiniti qx50 variable compression ratio