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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.

Workers at Mississippi auto supplier protesting low wages

Workers at an automotive seat factory in Mississippi are protesting what they say are low wages and poor working conditions as they attempt to unionize in what could become a new front for the United Auto Workers in the state. A group of workers and supporters at the Faurecia SA seating plant in Cleveland plans a Tuesday march. "We work an auto job and we're getting paid like Wal-Mart wages," said Jamarqus Reed, a 32-year-old Pace resident who has worked at the plant for almost 10 years. "We're trying to better ourselves." Nationally, the UAW has staked its future on unionizing Southern auto factories, with limited success so far. The union has been trying to organize Nissan Motor Co.'s Canton, MS, plant for years, and lost a 2008 worker vote at a Johnson Controls plant in nearby Madison that French-based Faurecia bought in 2011. The UAW narrowly lost a unionization vote at the Volkswagen AG plant in Chattanooga, TN, last year, but the union has since qualified for a new labor policy at the plant that grants access to meeting space and to regular discussions with management. The policy stops short of collective bargaining rights. The union is also trying to organize Nissan's assembly plant in Smyrna, TN, and Daimler AG's Mercedes-Benz plant in Tuscaloosa, AL. Protesters say Faurecia employees make a top wage of $11.64 per hour, while contract workers make $7.73 an hour. Company spokesman Tony Sapienza said that with overtime, the typical Faurecia employee makes more than the $27,000 a year that is the median wage around Cleveland. Wages are often low in the heavily impoverished Delta. "We are very confident that we are offering a very competitive wage," Sapienza said. Organizers criticize use of lower-paid contract workers Shannon Greenidge, a 44-year-old Cleveland resident, said she worked for a labor agency for more than two years before being hired directly by Faurecia. Greenidge said she makes $9.29 an hour, and can't save for retirement or to send her 11-year-old daughter to college. "That's not going to help me down the line in life," she said. Union supporters say as many as half the workers at the plant work for a contract-labor agency. Sapienza said that while the number varies, the company expects 15 percent of its workforce will be temporary employees this year. The UAW has organized some Southern auto parts plants in recent years, including Faurecia plants in Cottondale, Alabama, in 2012 and Louisville, Kentucky in 2013.

Nissan Cube dead for 2015

Another class cut-up has graduated from our motor pool. The Nissan Cube's indefatigable weirdness was likely both its chief selling point and its Achilles Heel, but Autoblog sources say that after a six-year run in the US, the niche player has been scrubbed from the Japanese automaker's lineup.
The move is hardly unexpected - there was confirmation from Nissan Canada that it was pulling the plug on the asymmetric little front-driver in its market back in May, and sales have not exactly been sparkling here in the States, either. In June, Nissan shifted just 336 Cubes, down 23.8 percent year over year. So far this year, Nissan has sold 2,294 units, a sales pace off 30.9 percent versus 2013. At its peak in 2010, the Cube remained firmly a niche vehicle, selling 22,968 units.
Nissan North America's Dan Passe, senior manager of product communications, maintains that "We are continuing to sell the 2014 Cube and we haven't made an announcement about future model plans," but Autoblog sources indicate that an official announcement will be coming in the next couple of months, and the Cube has been conspicuously left off of an exhaustive 2015 lineup "Charting the Changes" announcement released on Tuesday.