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Nissan may take control of struggling Mitsubishi Motors

Update: The reports were largely correct. Nissan will take a 34 percent stake in Mitsubishi for roughly $2.2b. Read all about it here. Reports say Nissan will buy a controlling stake in Mitsubishi Motors, either 30 or 34 percent, for about 200 billion yen or $1.84 billion. Nissan and Mitsubishi motors are currently part of a joint venture, NMKV, to build minicars together. Nissan is also responsible for reporting fuel-economy discrepancies with cars built under the joint-venture agreement, which put Mitsubishi in its current weakened state. Earlier today, reports surfaced that the fuel-economy issues were wider ranging than originally thought. Mitsubishi now admits that all of its Japanese-market cars sold since 1991 could have had faked fuel-economy data. Shares of Mitsubishi Motors have dropped by about half since the scandal was uncovered, opening the door for a takeover. While Nissan is a much larger company, it can benefit from Mitsubishi's 60-percent share of Japan's minicar market. The two companies also had plans to build electric vehicles together in the joint venture. Japan's Nikkei reports that talks are ongoing between the company and that a decision could be made Thursday by the companies' boards. Related Video: News Source: Nikkei Green Mitsubishi Nissan

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 to take over for Renault in Formula E

Formula E has generated a lot of news lately, even in the off-season, as major automakers continue to either join the series or express interest in participating. The inclusion of a number of European rivals makes the series particularly interesting. One thing missing from the lineup is a Japanese automaker. That will change, though, as Motorsport reports that Nissan will be taking over its Alliance partner Renault's spot on the starting grid. It's not confirmed when the switch will happen, but with the Renault e.dams Z.E. 17 (seen in testing above) already having been unveiled for next season, it's likely the switch will come in for the 2018/19 season when the series moves away from the practice of swapping cars mid-race. Renault has been a successful part of Formula E from the very beginning, providing (with partner Spark) the cars each team used in the first season, and scoring the series' first Team Championship in 2015, and then again in 2016 and 2017. Nissan, though, has the globally popular Leaf EV, and has been eyeing an entry into Formula E for some time now. Joining the series will not only boost the visibility of Nissan's electrification strategy, it will do the same for its Nismo arm as well (and, as we've already learned, there could be a Leaf Nismo offered in the future). The change would also free up resources for Renault to focus on its F1 efforts. As Motorsport also reports, Formula E CEO Alejandro Agag has said of the Japanese brands Nissan, Honda and Toyota, that "one of those three, maybe two, will end up" in the electric racing series, without elaborating further. Nissan isn't expected to confirm its Formula E entry soon, but it could happen at the Geneva Motor Show next year. Related Video: This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings. News Source: MotorsportImage Credit: Formula E Green Motorsports Nissan Renault Green Culture Electric Racing Vehicles Formula E nismo fia formula e championship