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Nissan Leaf keeps plug-in vehicle sales crown for 6th straight month

And Nissan makes it 14 in a row. For the 14th straight month, the all-electric Leaf has had "record sales," according to Nissan's marketing team. What that means is that for that particular month (in this case, April) no matter what year you look at, the car sold more than it ever did before. For April 2014, the 2,088 Leafs sold represents a 7.8-percent increase from 2013. Nissan's director of EV sales and marketing, Toby Perry, said in a statement that the "new market" of Cincinnati made the top 25 list for Leaf sales areas in April, so the car's popularity continues to ebb and flow across the US. Over at Chevy, the Volt sold 1,548 units in April, reaching a year-to-date total of 5,154. The Leaf is outpacing that with 7,272 YTD sales. In 2013, the Volt outsold the Leaf by about 500 vehicles, but Leaf sales are up 33 percent year-over-year while Volt is down 7.1 percent. The Leaf has also outsold the Volt for six straight months. But we're excited for every eco-car sale, and that's why we'll have our monthly detailed write-up of the rest of the plug-ins, hybrids and diesel vehicles available soon. Until then, discuss. Green Chevrolet Nissan Electric Hybrid PHEV ev sales

GM patent reveals new two-stage turbocharger

Modern turbochargers may be some of the best ever made, but performance is something that engineers are always trying to improve. According to GM Inside News, General Motors (GM) is hoping to alleviate some of the negative aspects of a two-stage turbocharger setup with a newly-patented design. The patent, that was filed on May 19, 2016, reveals a clever bypass system that allows the engine, a four-cylinder unit, to optimize both the low-pressure and high-pressure inlets for its respective functions. According to the filing, a conventional two-stage turbocharger setup is engineered to allow both turbines to operate simultaneously at low and mid engine speeds. At high engine speeds, only the low-pressure turbine works. The setup can't isolate either the low or high pressure side, which can impair low-end performance. GM's new two-stage turbocharger setup looks to eliminate this by linking the high-pressure turbo to the exhaust manifold through the high-pressure inlet duct. The low-pressure turbo is attached to the high-pressure turbo by a low-pressure inlet duct, which is linked to a connecting channel. A single actuator that is housed in the exhaust manifold creates a bypass that can opens the high-pressure inlet or close the connecting channel. Depending on what the engine load and speed is, the ECU guides the actuator—a single rotating spindle with discs corresponding to flanges on the high and low pressure sides—to isolate one of the two turbos. Isolating the turbos allow the respective inlets to be engineered for the best possible fluid dynamic performance. The setup should increase performance and decrease lag. There's no word on what car this setup will make an appearance on, but it will most likely be used in premium vehicles before trickling down to the rest of GM's vehicles. Related Video: News Source: GM Inside News, AutoGuide via GM Authority Cadillac Chevrolet GM Technology Sedan turbo patent engine turbocharging

Race Recap: 2013 Twelve Hours of Sebring, cakewalk up front, grindfest out back [w/spoilers]

This year's 12 Hours of Sebring wasn't exactly a foregone conclusion because we're still talking about racing, and anything can happen when the speeds are as high as the adrenaline and the desire. But we're still talking about Audi bringing it's two top-spec racers - and its huge budget and its nearly neurotic attention to detail - to a race that it uses as a test bed for The 24 Hours of Le Mans and as a way to open the endurance racing season with a victory.
Besides, 12 hours is a long time, especially at Sebring, and things didn't go all Audi's way. On top of that, although it was a pretty quiet race, behind the Audis things got even grimier, with plenty of battles, plenty of mechanical issues, and the new BMW Z4 GTE and Viper GTS-R being race tested. Oh, and that brand new chromed-out DeltaWing...