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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.

Watch this Nissan GT-R Nismo attack the 'Ring

Following yesterday's spy photos of the Nissan GT-R Nismo at the Nürburgring, we've been informed that some intrepid spies have captured video of Super Godzilla lapping the track. We aren't sure which turn the first clip is showing, but the second and third are almost certainly the tough right-hander known as Bergwerk.
Like the current GT-R, the Nismo, even with what might be a new exhaust system, isn't a vehicle that sounds particularly good in a flyby. It's more of just an intense whooshing noise. Take a look at the full video from RSR Nürburgring down below.

UAW calls on US State Department to help with Nissan plant

The United Auto Workers is calling for reinforcements in its ongoing battle with Nissan at the manufacturer's Canton, MS factory, where the Altima, Armada, Titan and NV (and eventually, the next Murano) are built. The union has been attempting to organize the employees at the factory for several years, but it's been largely unsuccessful.
Now, Reuters is reporting that the UAW is teaming with the IndustriALL Global Union and requesting intervention by the US State Department, with both groups accusing Nissan of using "threats, intimidation and fear" to keep the 5,600 workers at the facility from organizing. The two unions say this violates the guidelines of the Organization for Economic Cooperation and Development, an international organization dedicated to stimulating economic growth.
The UAW and IndustriALL are asking the State Department's National Contact Point to serve as mediator with Nissan, to make sure things play out fairly. Speaking to Reuters, though, there's at least one Michigan-based labor adviser that's skeptical of the move.