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Nissan GT-R goes on Rockies Alberta adventure with Epic Drives

Years after its original debut, the Nissan GT-R remains a much-feared, well-regarded entry in the sports car landscape. Sure, many of its original competitors are onto new generations these days, but Nissan has continually improved the GT-R, giving it meaningful tweaks almost every year since it came to the US market for 2009. Reviewers also just seem to keep finding things to praise about the all-wheel drive, turbocharged coupe. In this episode of Epic Drives, the GT-R proves that in addition to being a quite pleasant road trip companion around the province of Alberta, Canada, in a pinch it can go off-road to herd some horses, too.
At its heart, Epic Drives amounts to half travelogue and half driving review. So in between snaking the GT-R through some picturesque roads, host Arthur St. Antoine takes a tour of Alberta and the Canadian Rockies. If you're in the mood to take a drive in the Nissan through a landscape that blends the looks of a prairie, the Alps and fjords, then have a seat and check this video out.

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.

Worker killed at Nissan Tennessee plant

A worker has died at the Nissan assembly plant in Smyrna, TN following an accident. According to The Detroit News, the tragedy happened Thursday and involved a large electric panel that fell while it was being moved. The victim was not a Nissan employee, he was a worker for Michigan-based supplier Complete Automation.
Nissan has not released the name of the deceased, but has vowed to cooperate with the authorities investigating the accident. The Murfreesboro Post notes that this is the second death at the plant in recent years - in 2012, a transport truck driver was killed after his rig rolled forward, crushing him between his cab and trailer.