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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 transforms NV200 into part-e-Van [w/video]

Following its earlier BBQ van conversion, Nissan is demonstrating once again the flexibility of its NV200 van by rolling out this mobile party on wheels. Based on the battery-powered e-NV200, the "part e-Van" packs an array of upgrades to give it everything you'd need to turn any parking lot into a club. It's got a DJ booth on the roof, a 1,400-watt sound system, wireless headphones for silent-disco capability, a solar-powered disco ball that feeds juice back into the system, an alcohol-free bar dispenser, an LED dance floor, and a 20-foot-tall light-up canopy. There's even a drone that can deploy to capture the party scene, and a monitor hooked up online to share it all via social media. The party wagon is set to debut outside the Olympiastadion in Berlin for the UEFA Champions League final (that's a soccer game for those of us unfamiliar), and will then hit the road on tour – with its next stop scheduled for the 24 Hours of Le Mans. This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings. Party On! Nissan turns 100% Electric e-NV200 into the ultimate part e-VAN - Vehicle unveiled ahead of the UEFA Champions League Final - Zero Emission vehicle will be displayed outside The Olympiastadion ahead of kick-off - One-off vehicle's key features include a disco ball solar array which feeds power to some of the van's elements - Watch the PART e-VAN in full swing here: https://youtu.be/gdTew0hZ_Rs Nissan has transformed its all-electric e-NV200 into the ultimate party on wheels. The vehicle - called the PART e-VAN and powered by the 100% electric e-NV200 - will charge into Berlin for its inaugural reveal tomorrow night ahead of Saturday's UEFA Champions League Final, before exciting fans outside The Olympiastadion prior to kick-off. Some of the unique van's standout attributes include a dazzling disco ball solar panel array on the roof which absorbs daylight to power some of this one-off vehicle's features, an augmented reality system where users will be able to jump into their own party scene before sharing it with friends on social media and a custom-made sound system capable of throwing the best silent disco party.

Nissan, Honda and Mitsubishi will share EV components and AI research

TOKYO — Japanese automakers Nissan and Honda say they plan to share components for electric vehicles like batteries and jointly research software for autonomous driving. A third Japanese manufacturer, Mitsubishi Motors Corp., has joined the Nissan-Honda partnership, sharing the view that speed and size are crucial in responding to dramatic changes in the auto industry centered around electrification. A preliminary agreement between Nissan Motor Co. and Honda Motor Co. was announced in March. After 100 days of talks, executives of the companies evinced a sense of urgency. Japanese automakers dominated the era of gasoline engines in recent decades but have fallen behind formidable new players in green cars like Tesla of the U.S. and ChinaÂ’s BYD. “Companies that donÂ’t adapt to the changes cannot survive,” said Honda Chief Executive Toshihiro Mibe. “If we try to do everything on our own, we cannot catch up.” Nissan and Honda will use the same batteries and adopt the same specifications for motors and inverters for EV axles, they said. By coming together in what Mibe and counterpart at Nissan, Makoto Uchida, repeatedly called “making friends” to achieve economies of scale, the companies plan more strategic investments in technology and aim to cut costs by boosting volume. Each company will continue to produce and offer its own model offerings. But they will share resources in areas like components and software development, where “making friends” will be a plus, Mibe and Uchida told reporters. They declined to say whether the friendship will extend to a mutual capital ownership, while noting that wasnÂ’t ruled out. The two companies also agreed to have their model lineups “mutually complement” each other in various global markets, including both internal combustion engine vehicles and EVs. Details on that are being worked out, the companies said. Honda and Nissan will also work together on energy services in Japan. Under ThursdayÂ’s announcements, Mitsubishi will join as a third member. Toyota Motor Corp., JapanÂ’s top automaker, is not part of the three-way collaboration. Although Honda and Nissan have very different corporate cultures, it became clear, as their discussions on working together continued, their engineers and other workers on the ground have a lot in common, Uchida said. “Speed is the most crucial element, considering our size,” he added.