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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.

Tesla poaches Renault-Nissan communications boss Sproule

Need another sign that Tesla is growing into a force to be reckoned with? Bloomberg reports it has just snagged high-profile communications boss Simon Sproule from Renault-Nissan to become the EV maker's vice president of communications and marketing.
Sproule is an industry veteran, having spent 20 years at Nissan (where he grew to become CEO Carlos Ghosn's right-hand man). In addition, he logged stints at Ford, Jaguar (when it was still a Blue Oval-owned brand) and Microsoft. Despite all that experience, Sproule is still young, at just 45 years of age, as Bloomberg points out, yet he's held positions in the US, Japan and France over the years.
This is all good news for Tesla, which is in need of a strong spokesman outside of company CEO Elon Musk. It's been battling with the state of New Jersey and its governor, Chris Christie, over direct sales in the Garden State.

Hyundai Tucson Adventuremobile ready for camping at SEMA

A troop of customized 2016 Hyundai Tucsons will be making their way to the company's SEMA Show display in Las Vegas, NV, this year, and now there'll be one more in attendance, too. Joining hardcore offroad and high-horsepower takes on the crossover is the Adventuremobile from tuner John Pangilinan for those that love the outdoors but still need a vehicle to commute to work during the week. The Adventuremobile has everything for a camping excursion. There's no worry about where to rest in the wilderness thanks to a roof-mounted tent that sleeps two, and solar panels keep electronics topped up. An LED light bar should mean no problems finding the perfect spot, either. Even the cabin is a comfy place for a drive to the campsite with an upgraded stereo and Katzkin leather upholstery. The crossover looks rugged thanks to a coat of army green paint, but this tuned Tucson keeps the rest of the mods fairly realistic for the average adventurer. For a little added ability offroad, there's a 1.5-inch suspension lift and Toyo Open Country A/T II tires on some Rays wheels. The powertrain also gets some small tweaks with some new plumbing by AEM and a Magnaflow exhaust. The whole package seems like a great tool for spending a weekend in the woods. JOHN PANGILINAN CREATES TUCSON ADVENTUREMOBILE FOR SEMA FOUNTAIN VALLEY, Calif., Oct. 19, 2015 – John Pangilinan, the renowned Southern California tuner known for creating vehicles that blur the lines between lifestyle and automotive, has released details on his 2016 Tucson SEMA build. Dubbed the "Adventuremobile," the vehicle blends Hyundai's new crossover platform with a passion for the great outdoors, perfect for the weekend getaway. The car will be revealed at Hyundai's SEMA press conference on November 3 at 11:30 a.m. PT, in Las Vegas. The "Adventuremobile" is just as home on the daily commute as it is lugging gear up into the mountains for the weekend out of town. Most obvious is the addition of a Treeline Tamarack roof-top tent, with ample room to sleep two campers, and Goal Zero solar panels to power all of their accessories. The exterior has been beefed up with the addition of an Aries bull bar and side steps, Rigid Industries LED lights, and the vehicle has been finished in a BASF army green paint scheme by Strasse Sport. A custom 1.5-in.