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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.

Carlos Ghosn launches initiative to help his native Lebanon

BEIRUT — Former Nissan Motor Co. Chairman Carlos Ghosn made a new public appearance in Lebanon Tuesday during which he launched an initiative with a local university to help the country that is undergoing a severe economic and financial crisis. It is GhosnÂ’s second appearance in public since he was smuggled from Japan in late December to his ancestral Lebanon. In early January, Ghosn gave a news conference in Beirut saying he fled because he could not expect a fair trial, was subjected to unfair conditions in detention and was barred from meeting his wife under his bail conditions. Ghosn declined to elaborate about the details of his arrival in Lebanon, saying it happened in “dramatic circumstances” and also refused to answer questions regarding two Americans who allegedly helped him flee Japan to Lebanon through Turkey. He also refused to talk about former Nissan executive Greg Kelly, who is standing trial in Japan. Ghosn said that the initiative with the Maronite Christian Holy Spirit University of Kaslik, USEK, titled "Moving Forward," aims to launch a top executive management program, a training center on new technologies and to support startups. “The objective is obviously serving this institution ... but also serving the country and the society,” Ghosn said in an opening speech. “If there is one specific thing that Lebanon needs it is create jobs.” “When we are developing top management, we are developing people strong enough to carry companies through this difficult time, to grow a company and to create jobs,” Ghosn said. Lebanon is mired in the countryÂ’s worst economic and financial crisis in its modern history. It defaulted on paying back its debt for the first time ever in March, and the local currency has collapsed, leading to hyperinflation and soaring poverty and unemployment. Talks with the International Monetary Fund on a bailout package have stalled. The economic and political crisis deepened after an Aug. 4, blast in Beirut that killed and wounded many and caused damage worth billions of dollars. Many Lebanese consider Ghosn as one of the countryÂ’s heroes in the diaspora who succeeded in turning troubled car companies in France and Japan into profit making ventures. Some have suggested that Ghosn should be given a governmental post in Lebanon to get the country that is notorious for corruption and mismanagement out of its troubles.

Nissan to unveil next-gen Qashqai on Nov. 7

Never heard of the Nissan Qashqai? That's alright, because Nissan has a big crossover lineup, and this one is only sold overseas. But in the markets where it's available, it's been an unbridled success and the cash-cow its name suggests. It was introduced in 2007, and by the end of that year, Nissan had already sold 100,000 of them in Europe alone. By 2011 it had made a million of them, and to date has sold over two million worldwide. And now it's preparing to launch an all-new model to replace it.
Spied while undergoing development a few months ago, Nissan has now announced that it will reveal the new Qashqai on November 7th. But to keep us on our toes, the Japanese automaker has released this teaser image.
Cloaked and looking like something out of Tron, the new Qashqai promises to borrow heavily from the Resonance concept shown earlier this year in Detroit (a bit ironic since the Qashqai isn't sold here) and follow the lead of the new Rogue (or X-Trail as its known in markets where it shares showroom floorspace with the Qashqai).