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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

Nissan Leaf is now the best-selling plug-in vehicle of all time in US

Numbers don't lie. And in some instances, you can see their truth from miles away. As everyone expected, the Nissan Leaf is now officially the best-selling plug-in vehicle in the US. While the two vehicles aren't direct competitors (one's a pure EV and the other is a plug-in hybrid), they certainly dominate the plug-in vehicle sales charts. When we do a little math on those charts, we see that since the two vehicles went on sale at the end of 2010, the Volt has sold 75,231 units while the Leaf is now at 76,407, giving the Leaf a 1,176-vehicle lead. The Leaf trailed the Volt by just two units at the end of February. This is the first time the EV had held the overall lead since the end of February 2012, when it was ahead 10,847 to 9,623 and for a while there at the end of 2013, the Volt was up by around 12,000 units. Times have changed, though, and we don't expect the lead to switch back until the next-gen Volt goes on sale later this year, and even then nothing is certain. The Leaf sold 1,817 copies last month, a drop of 27.5 percent from last year. Year-to-date, the Leaf has sold 4,085 units, down 21.2 percent from the same time period in 2014. There were 639 Volts sold last month, a 56.8-percent sales decrease compared to March 2014. So far this year, Volt sales are down 48 percent. Green Chevrolet Nissan ev sales hybrid sales

Malcolm Butler gets the MVP's Chevy Colorado

In the wake of the Super Bowl last week, we reported that New England Patriots quarterback Tom Brady intended to give the Chevy Colorado awarded to him as the game's most valuable player to Malcolm Butler instead. In our informal poll (to say nothing of the hundred-plus comments that ensued), an overwhelming 86.7 percent of you, our loyal readers, agreed that it was the right thing to do. And now that's precisely what's happened. "After consulting Super Bowl MVP Tom Brady," the automaker said in the press release below, "Chevrolet presented an all-new Colorado pickup to New England Patriots cornerback Malcolm Butler." The rookie, as you may have seen in between the commercials, made the game-saving interception that handed his team the victory, propelling Butler to stardom. "I am ecstatic that Chevrolet has chosen to reward me with a Colorado," said Butler upon taking delivery of his new red pickup. "It is just another unreal event in what has been an incredible week." We can only imagine. Enjoy the truck, Malcolm; you've earned it. Related Video: Upon Further Review, Chevrolet Awards Super Bowl MVP Colorado to Malcolm Butler 2015-02-10 DETROIT – After consulting Super Bowl MVP Tom Brady, Chevrolet presented an all-new Colorado pickup to New England Patriots cornerback Malcolm Butler, whose end zone interception preserved the Patriots' victory in Super Bowl XLIX. The Colorado was intended to be awarded to Brady, the Patriots' quarterback, in recognition of his Super Bowl Most Valuable Player award. However, Brady and Chevrolet huddled on Monday and Chevrolet determined Butler deserved recognition for his game-saving interception. "I've seen several game-changing moments in big games, and Malcom's interception last Sunday ranks up there as one of the biggest," said Brady. "I appreciate Chevrolet wanting to honor the Super Bowl's top performer, and I'm glad they have agreed to award the Colorado to Malcolm." Said Butler: "I am ecstatic that Chevrolet has chosen to reward me with a Colorado. It is just another unreal event in what has been an incredible week." The Chevrolet Colorado, 2015 Motor Trend Truck of the Year®, was engineered to be the most capable, most versatile and most technologically advanced midsize truck in the market. With class-leading horsepower and fuel economy along with a 4G LTE built-in Wi-Fi hotspot, the Colorado adds a new dimension to the Chevy truck line.