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Tesla, BMW and Nissan meeting in secret to discuss charging tech

It's interesting what's happening in the electric vehicle field. It used to be that BMW and Tesla were competitors. Then – and of course they're still competing, especially in the public mind – they were working together on ... something. Maybe. And now, the Financial Times reports that the two luxury automakers are meeting with Nissan. Again, maybe. The scuttlebutt is that the three companies are interested in working together on something to do with charging electric vehicles, potentially a global recharging standard. Currently, when it comes to fast charging, BMW uses the SAE Combo standard, Nissan uses CHAdeMO and Tesla uses its own Superchargers. The meeting was prompted by Tesla opening of all of its patents the other day, FT says. Speaking during the recent annual shareholder meeting, Musk said he was "more than happy to have other manufacturers" use Tesla's Superchargers but that, "there is no other electric car that can accept anything close to 135 kilowatts." Let's assume the technical hurdle can be overcome. With any potential patent/licensing problems out of the way, these discussions with BMW and Nissan might be revolving around this other angle that Musk mentioned: "They (other automakers) just have to contribute to the capital cost, so figure out what percentage of the time are their cars using the Supercharger network and then they can make a contribution proportionate to their customer usage of the Supercharger network." That certainly sounds like something that could take some time to figure out. News Source: Financial TimesImage Credit: Elbilforeningen / Flickr Green BMW Nissan Tesla Electric supercharger chademo sae combo

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.

2017 Tokyo Motor Show | Mega Gallery

The 2017 Tokyo Motor Show has been a big and busy one. It's also had machinery ranging from beautiful to bizarre. But there's been something for everyone. Companies such as Honda and Subaru brought performance oriented vehicles, Toyota showcased a wide array of funky and practical concepts, and Yamaha even broke away from motorcycles to do another car concept. You can check all of these vehicles out, and more in the galleries below. 2018 Honda Gold Wing: View 5 Photos Honda Neo Sports Cafe Concept: View 5 Photos Honda Riding Assist-e Concept: View 7 Photos Honda Sports EV Concept: View 5 Photos Honda Super Cub: View 3 Photos Isuzu FD-SI and Elf EV: View 9 Photos Lexus LS+ Concept: View 18 Photos Mazda Kai Concept: View 18 Photos Mazda Vision Coupe Concept: View 15 Photos Mitsubishi e-Evolution Concept: View 8 Photos Nissan IMx Concept: View 29 Photos Nissan Leaf Nismo Concept: View 8 Photos Subaru Viziv Performance Concept: View 12 Photos Toyota Century and Crown: View 7 Photos Toyota Concept-i Series: View 16 Photos Toyota GR HV SPORTS Concept: View 6 Photos Toyota Tj Cruiser: View 12 Photos Yamaha Concepts (Cross Hub, MOTOROiD, MWC-4, Motobot): View 5 Photos Related Video: Tokyo Motor Show Honda Isuzu Lexus Mazda Mitsubishi Nissan Subaru Toyota