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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

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

2016 Chevy Malibu gets premium looks, hybrid model

The Chevrolet Malibu was once an automotive icon, but its modern reputation is one for underachievement. A new 2016 model seeks to restore the storied nameplate with improved styling, more interior room and a new hybrid version. It debuts Wednesday at the New York Auto Show. Put simply, "the goal was to put Chevrolet back in the midsize car segment," said John Cafaro, the brand's executive director of car design. In a crowded arena with 2.2 million sales up for grabs annually, Chevy has not been a player. Last year, the brand sold 188,519 Malibus, a six-percent decline from 2013, and fewer than half the number of Toyota Camrys and Honda Accords sold. Despite awards from J.D. Power and Associates and the Insurance Institute for Highway Safety, Chevy knew the Malibu needed a big change. New Skin, Lighter Bones The redesign has been in the works for at least three years. Although the Malibu is still based on GM's Epsilon 2 platform, the underpinnings are more derivative of the Impala than the outgoing model. The body structure makes greater use of high-strength steel, which helps reduce weight by 300 pounds. Size is more Impala-like as well, with 2.3 inches more overall length and a 3.6-inch wheelbase stretch contributing to greater interior space. A new skin covers the Malibu's lighter bones, and design language from the Impala gives its sibling sedan a fresher, more upscale appearance. To execute this premium appearance, Chevy turned to 25-year-old designer Jaymer Starbody, a four-year General Motors veteran and graduate from Detroit's College for Creative Studies. He described the new Malibu as having a "wheel-oriented" design, and the car looks poised to pounce from certain angles. Though the 2016 Malibu is the same width as before, designers stretched the creases and angles in the sheetmetal to create a flatter, sleeker appearance. The hood and cowl are lower, and the Malibu's face sparkles with LED running lamps on the top trim levels. Inside, the roomier cabin has a new center stack, satin chrome accents on the interior panel and a console storage area designed for mobile devices. Chevy MyLink with a seven-inch color touchscreen is standard on lower trims, and the top model upgrades to an eight-inch screen. Perforated leather seats and ambient lighting are also available options. The cabin was designed to look high-tech, but still remain easy to use, according to Chevy interior design director Crystal Windham.