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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 delays decision on merger with Fiat Chrysler

PARIS — Renault has delayed a decision on whether to merge with Fiat Chrysler Automobiles, a deal that could reshape the global auto industry as carmakers race to make electric and autonomous vehicles for the masses. The deal still looks likely, but faced new criticism Tuesday from Renault's leading union and questions from its Japanese alliance partner Nissan. The French government is also putting conditions on the deal, including job guarantees and an operational headquarters based in France. The French carmaker's board will meet again at the end of the day Wednesday to "continue to study with interest" last week's merger proposal from FCA, Renault said in a statement. A Renault board meeting Tuesday to study the deal was inconclusive. The company didn't explain why, but a French government official said board members don't want to rush into a deal and are seeking agreement on all parts of the potential merger. The official, who spoke on condition of anonymity in line with government policy, told The Associated Press the conditions outlined by France's finance minister still "need to be met." France and Italy are both painting themselves as winners in the deal, which could save both companies 5 billion euros ($5.6 billion) a year. But workers worry a merger could lead to job losses, and analysts warn it could bog down in the challenges of managing such a hulking company across multiple countries. And a possible loser is Japan's Nissan, whose once-mighty alliance with Renault and Mitsubishi is on the rocks since star CEO Carlos Ghosn's arrest in November. Nissan CEO Hiroto Saikawa cast doubt Tuesday on whether his company will be involved in a Renault-Fiat Chrysler merger — and suggested adding Fiat Chrysler to the looser Renault-Nissan-Mitsubishi alliance instead. Saikawa said in a statement that the Renault-Fiat Chrysler deal would "significantly alter" the structure of Nissan's longtime partnership with Renault, and Nissan would analyze its contractual relationships to protect the company's interests. If Renault's board says "yes" to Fiat Chrysler, that would open the way for a non-binding memorandum of understanding to start exclusive merger negotiations. The ensuing process — including consultations with unions, the French government, antitrust authorities and other regulators — would take about a year. A merger would create the world's third-biggest automaker, worth almost $40 billion and producing some 8.7 million vehicles a year.

Autoblog's guilty pleasure cars

Guilty pleasures are part of life – don't even try to pretend like you don't have one (or two, or six). In the non-automotive space, this could come down to that secret playlist in your iPhone of songs you'll only listen to when you're alone; or think of that one TV show you really do love, but won't admit to your friends. I've got plenty, and so do you. Going back to cars, here's a particularly juicy one for me: several years ago, I had a mad crush on the very last iteration of the Cadillac DTS. Oh yes, the front-wheel-drive, Northstar V8-powered sofa-on-wheels that was the last remaining shred of the elderly-swooning days of Cadillac's past. Every time I had the chance to drive one, I was secretly giddy. Don't hate me, okay? These days, the DTS is gone, but I've still got a mess of other cars that hold a special place in my heart. And in the spirit of camaraderie, I've asked my other Autoblog editors to tell me some of their guilty pleasure cars, as well – Seyth Miersma, as you can see above, has a few choice emotions to share about the Mitsubishi Lancer Evolution. Read on to find out what cars make us secretly happy. Mercedes-Benz SL65 AMG This decadent convertible is the epitome of the guilty pleasure. It's big, powerful, fairly heavy and it's richly appointed inside and out. It's a chocolate eclair with the three-pointed star on the hood. Given my druthers, I'd take the SL65 AMG, which delivers 621 horsepower and 738 pound-feet of torque. That output is borderline absurd for this laid-back convertible. I don't care. You don't need dessert. Sometimes you just crave it. The SL line is about the feel you get on the road. The roof is open. The air, sun and engine sounds all embrace you. It's the same dynamic you could have experienced in a Mercedes a century ago, yet the SL gives you the most modern of luxuries. An Airscarf feature that warms my neck and shoulders through a vent embedded in the seat? Yes, please. Sure, it's an old-guy car. Mr. Burns and Lord Grantham are probably too young and hip for an SL65. I don't care. This is my guilty pleasure. Release the hounds. – Greg Migliore Senior Editor Ford Flex I drove my first Flex in 2009 when my mother let me borrow hers for the summer while I was away at college. The incredibly spacious interior made moving twice that summer a breeze, and the 200-mile trips up north were quite comfortable.