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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

Autoblog's top 50 car photos of 2016

This one shouldn't need much explanation. We like cars a whole lot, and that includes not just driving them but taking great pictures of them. We've collected our 50 favorite images from this year in the mega-gallery above. It's a mix of old and new, with a healthy dose of vintage and modern race cars mixed in, and not one single shot under the harsh lights of an auto show. So click through and enjoy. Featured Gallery Autoblog's Top 50 Photos of 2016 View 50 Photos Image Credit: Copyright 2016 Autoblog.com Audi BMW Chevrolet Dodge Ferrari Ford Lamborghini Mazda McLaren Mercedes-Benz Porsche Rolls-Royce Volvo Convertible Coupe Motorcycle Luxury Racing Vehicles Performance Supercars Classics

Chevy Cruze CNG available from Crazy Diamond Performance

Anyone out there who can somehow find a second way to link Pink Floyd to natural gas vehicles gets a prize. Because so far, we have one Michigan-based company called Crazy Diamond Performance (Shine On You Crazy Diamond being a longtime Floyd fave) that's setting out to convert Chevrolet Cruze vehicles to run on compressed natural gas (CNG). All in the name of cheaper fuel and domestic security, of course. Crazy Diamond says it can offer a converted CNG-powered Chevy Cruze for a price as low as $26,000. That four-cylinder version has 130 horsepower and an 8.5-gasoline-gallon-equivalent capacity that provides a full-tank range of as many as 250 miles. Pony up another $2,000 or so and the peppier, turbocharged CNG Cruze can be yours. The company says it will provide a 100,000-mile powertrain warranty and is trying to get EPA certification for its conversions. The selling points are cheaper fuel (CNG is about half the cost of regular gasoline in some parts of the country) and homeland security (CNG reduces dependence on foreign oil). The only production passenger vehicle CNG in the US is the Honda Civic CNG, which sells in very limited numbers. Check out Crazy Diamond's flyer here. Featured Gallery 2015 Chevrolet Cruze LTZ: New York 2014 View 13 Photos News Source: Crazy Diamond Performance via Hybrid Cars, Green Fleet Magazine Green Chevrolet Natural Gas Vehicles CNG