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Renault invests in French electric car plant upgrade

PARIS — Renault will invest more than 1 billion euros ($1.2 billion) to increase electric vehicle production capacity in France and add new models, the carmaker said on Thursday. The Zoe production line in Flins, west of Paris, will double its maximum output with the battery-powered subcompact's next upgrade, the company said in a statement, and its northern Douai factory will tool up to build electric cars on a new architecture shared with Japanese affiliate Nissan. "The acceleration of our investments in France for electric vehicles will increase the competitiveness and attractiveness of our French industrial sites," said Renault Chairman and Chief Executive Carlos Ghosn, who also chairs Nissan and Mitsubishi Motors and heads the carmakers' three-way alliance. The Cleon plant will triple its electric motor production capacity, while Maubeuge in eastern France receives tooling investment for the next Kangoo van including its electric version, Renault said. Reporting by Laurence Frost. Related Video: Image Credit: REUTERS/Jacky Naegele Green Plants/Manufacturing Nissan Renault Electric

Infiniti's new VC-T changes the rules of small turbocharged engines

The upcoming Infiniti QX50 crossover does not get our pulse racing, no matter how shapely the QX Sport Inspiration concept that previews it may be. No midsize SUV does, to be fair. But it has something special under the hood – the world's first production variable-compression-ratio engine. That means the QX50's 2.0-liter turbo four, which makes 268 horsepower and 288 pound-feet of torque, will have up to 27 percent better fuel economy. Here's how it works. The trend of moving to smaller, turbocharged engines carries with it one big falsehood. Under low load when the turbo isn't needed, these engines are less efficient than an equivalent engine without a turbo because of the low compression ratio the turbo requires. That is, if you never need the extra power, you're wasting fuel. Turbocharged (and supercharged) engines use a lower compression ratio to prevent detonation. When you force extra air in a cylinder and mix it with fuel, it's more likely to prematurely go boom. Lowering the compression ratio prevents this problem, but it's less efficient. Infiniti's VC-T promises the best of both worlds, with a compression ratio that ranges from 8.0:1 for high-power turbo needs to a 14.0:1 ratio for fuel-sipping efficiency. At its heart the VC-T engine is a simple idea, but it's complicated to explain. Consider yourself warned. The photo below from Infiniti serves as a good visual overview. For the truly nerdy, this patent application covers the mechanical concept. Instead of having the pistons connected to the crankshaft, Infiniti's engine has a pivot arm with a connection on each end. One end connects to the piston, the other connects to a second lower shaft, which is controlled by an actuator arm. At any given time the engine's pistons move up and down according to the lobes on the crankshaft. But the actuator arm can change the angle of the pivot arm up and down. That is, the pistons still move in the same motion with the same stroke, but phase the entire stroke up or down. Move the pivot up and there's less room at the top, which means a higher compression ratio. Move the pivot down and the compression ratio goes down, too. As an added bonus, the lower shaft eliminates the need for counter-rotating balance shafts. Infiniti says this system works constantly and can vary the compression ratio to any number between 8:1 and 14:1. It also uses electronic variable valve timing on the intake valves to switch into Atkinson-cycle combustion for greater efficiency.

The Nissan Ariya was nearly the new Murano

NEW YORK — In addition to providing thoughts on a future Xterra while at the New York International Auto Show, Nissan Americas Senior Vice President and Chief Planning Officer Ponz Pandikuthira also talked with us a bit about EVs, and more specifically model lines and nameplates. We've seen a few strategies ranging from almost completely new and parallel model lines (such as Hyundai's Ioniqs and Kia's EV#s), to reusing old names on still similarly parallel models (such as Chevy's Equinox, Blazer and Silverado EVs), and of course blends of the two. So far, Nissan has gone with the separate model route with Leaf and Ariya, but that may not be as much the case in the future. Pandikuthira noted that now, consumers don't have as much interest in their EVs being some completely unique, statement piece. As such, both Nissan and Infiniti will be adding EVs to existing nameplates more so than totally new model lines. He didn't say whether they would simply be electric variants of existing internal combustion models, or something like Chevy's model, though. But he did note that the Nissan Ariya was, at one point, considered as a possible Murano successor. It certainly would make sense to us. The Ariya is a distinct-looking crossover, and one with a very upscale interior, both key tenets of the Murano from that model's introduction in the early 2000s. Plus, the Murano is in pretty dire need of a replacement, as the current generation dates back nearly a decade ago to the 2015 model year. The reason Pandikuthira gave for the Ariya decision was that the crossover represented enough of a change in Nissan's EV technology and capabilities that the brand wanted to highlight that with a unique nameplate. Nissan won't be ruling out the possibility of new EV-only models, though. Just like with Ariya, Pandikuthira told us that if a planned car is unique enough, the company will still be open to a new line. But expect more, say, electric Rogues and Altimas than totally new names. Related video: This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings.