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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

Renault and Nissan forge deeper alliance

If the automotive industry's current era could be summarized by one trend - from a corporate aspect, anyway - surely it would be conglomeration. But of all the major auto groups that have emerged over the past several years, none have kept themselves at arm's length quite like the Renault-Nissan Alliance.
Much like Fiat and Chrysler, Renault and Nissan are presided over by a common chief executive. But whereas Sergio Marchionne's Italian-American alliance has moved swiftly from a transatlantic partnership to a merged company in the span of less than five years, Carlos Ghosn's Franco-Japanese alliance has stood oceans apart since 1999. But now the Renault-Nissan Alliance is following the lead set by Fiat Chrysler Automobiles in bridging that distance through several key measures.
For one, Renault and Nissan will make increased use of common platforms, R&D, systems and testing. The two automakers will also cooperate more closely on manufacturing and supply chain management, purchasing and human resources. To manage the increased cooperation, the alliance has appointed several new executive vice presidents from within its ow ranks and a new management committee to be chaired by Ghosn, details about which you can read in the press release below.

2013 Nissan Pathfinder: Wrap-Up [w/video]

Despite our tendency as enthusiasts to clamor for things like wagons and hot hatchbacks, it's hard to argue with the buying public's increasing demand for functional crossovers. In fact, the great SUV craze of the late-1990s has all but faded in favor of the easier-driving, better-packaged, more-efficient crossover. That's even true at the larger end of the market - just look at what happened when Ford redesigned its body-on-frame Explorer into a stylish and well-equipped CUV. And now look at the similar success Nissan has had in repurposing its rugged Pathfinder sport-ute as an appealing crossover.
But happily, we report the following line: out of every long-term vehicle Autoblog has ever tested, not a single one has been as in-demand as the 2013 Pathfinder Platinum you see here. After 13 months of solid use, we added 24,372 miles to the Pfinder's odometer - and that's without the vehicle ever leaving the hands of our Detroit-based team (sorry, West Coasters).
There's good reason for that high-demand usage, too. After spending a little over a year with our Mocha Stone tester (a color that earned this Nissan the nickname "Sweet Brown") we came to appreciate its vast versatility, comfort, all-weather prowess, and the way it absolutely ate up the miles on long trips. We drove it all over the United States, in all four seasons, filling it with our families, friends, and occasionally using its capacious cabin for sleeping on the road. Through good and bad, the Pathfinder was a trusty friend. But like any good friendship, that wasn't without a couple of fights.