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Nissan To Buy Mitsubishi For $2.2B | Autoblog Minute

Nissan confirmed this week that it would take a controlling interest in troubled Japanese automaker Mitsubishi. Nissan will buy 34% of Mitsubishi for $2.2B. Mitsubishi Nissan Autoblog Minute Videos Original Video

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.

Nissan teases crossover concept for Frankfurt

Nissan released a teaser shot on Monday of a crossover concept that will debut at the Frankfurt Motor Show, and it's quite the tease. Nissan literally gave us no further information. Speculation is rampant as to the vehicle's identity. Autocar suggests it could wear the famous Z badge, which would be a stunning departure from the Z's sports-car heritage. Other theories indicate it could be the next-generation Juke. The photo does show off Nissan's latest design language which is used by the Murano and Maxima in production. The only other info we have is a cryptic line from Nissan's press release: "So can Nissan continue to innovate and move the bar higher? What if Nissan created a new way to feel driving excitement? The answer will come at the Frankfurt Motor Show." Expect more information and images to dribble out and or/leak this week in the run-up to the show. Related Video: