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Nismo GT-R poised to be fastest Nissan ever

For almost every year since the Nissan GT-R first debuted, Nissan has been figuring out how to cram more power under the hood or give it 911-like quickness around the Nürburgring. Looking to create a brand image for its performance arm, we already knew that a hotter, Nismo-branded GT-R was in the works, but it seems some details may have leaked regarding this new Nismo GT-R.
While little has been spoken of this Super GT-R since February, Top Gear is reporting that Nismo is planning to make improvements to the coupe's power, handing and styling - three things that we're sure few have complained about since 2009. What could this mean for the GT-R? According to the article, Nismo could be looking to raise horsepower from the current 545-hp mark to more than 570 hp, and handling upgrades could give the car a 'Ring lap time of seven minutes and 22 seconds, which as Top Gear points out, is four seconds quicker than the new 911 GT3.

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.

Ghosn says having Apple in EV business would be good news

Nissan once promised to have commercially viable autonomous vehicles on the road by 2020 and even certified a Leaf to test the technology in Japan. The company has since backpedaled a bit from its original lofty claims, though. During CEO Carlos Ghosn's keynote presentation at the Mobile World Congress in Barcelona, Spain, the auto exec talked more about the automaker's strategy and directly confronted Apple's rumored entry into the market. "When Apple says they are going to come with an electric car in 2020, that's good news for us," he said in his speech, according to Adweek. Ghosn took the view that any company able to grow the acceptance of EVs would help every automaker in the segment. The Renault-Nissan Alliance has been at the forefront of developing the market and claimed nearly 60 percent of the global market share last year. He was also the latest auto industry heavyweight to voice his opinion on Apple entering the industry. However, in contrast to former General Motors boss Dan Akerson, the Nissan CEO was much more welcoming. Ghosn also used the speech as a chance to clarify Nissan's plans for autonomous vehicles and seemingly pushed the original goal back by about five years. "In 10 years, you'll have cars without the driver. It is here, and it's going to transform the products," he said, according to Adweek. Under Nissan's current timeline, traffic-jam assist and fully automated parking are due in 2016, followed by automatic lane changing in 2018 and the ability to drive through intersections without a driver's control comes in 2020. News Source: AdweekImage Credit: Yasuyoshi Chiba / AFP / Getty Images Green Nissan Renault Technology Emerging Technologies Autonomous Vehicles Electric