1989 Nissan Pick Up, No Reserve on 2040-cars

Auto blog

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.

Nissan's purchase of Mitsubishi is officially official

After the company's announcement in May, the Nissan's purchase of a 34 percent stake in Mitsubishi is now official. The deal cost Nissan $2.3 billion, according to the Wall Street Journal, and brings Mitsubishi into the Nissan-Renault Alliance. The company explained that this new partnership will manifest itself in shared vehicle platforms and technology, joint purchasing, and shared manufacturing. Nissan also said that this purchase will make the company one of the three largest companies by volume in the world. Nissan also emphasized that Mitsubishi will very much be a partner in the current alliance with Renault. In addition, Carlos Ghosn, CEO of both Nissan and Renault, has been nominated to be the new chairman of the Mitsubishi board. With Ghosn at the head of the board, current Mitsubishi president and CEO, Osamu Masuko, will remain in his positions but Nissan's current chief competitive officer will join Masuko as co-chief executive officer at Mitsubishi. With these companies now working together, we'll probably start seeing more commonality between Nissan and Mitsubishi products here in the States. It would also be a great opportunity to get some of Mitsubishi's cooler products here. Perhaps Mitsubishi and Nissan will take our hint about the Delica. This article has been revised to clarify that Nissan Motors purchased the stake in Mitsubishi, not the Nissan-Renault Alliance, and to add the value of the purchase. Related Video: News Source: Nissan, Wall Street JournalImage Credit: Issei Kato / Reuters Mitsubishi Nissan Renault renault-nissan alliance

Here are the best-selling cars and trucks from January 2015

Every month, Autoblog slogs through all the sales figures reported by automakers that do business in the United States, and, after a little bit of sorting, we put it into an easy-to-read chart in an attempt to make it as easy as possible to follow the ins and outs of sales and shipments. But that only covers the brands themselves, not the individual models they sell. And we think you'd all be interested in knowing which vehicles beat their rivals in sales from month to month, so we've put together this handy gallery to keep you in the know. While the leader of the pack may not come as much of a surprise, the order that the top ten finishes in changes frequently – due to automaker deals, the price of gas, etc. – and we've included some statistics to help you see how their current performance stacks up to month's past. Click here to see January 2015's Top Ten Best-Selling Cars And Trucks In America. By the Numbers Chevrolet Ford GM Honda Nissan RAM Toyota Car Buying