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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

We recap the 2017 Detroit Auto Show | Autoblog Podcast #499

We're back with our first Autoblog Podcast of 2017! This week, Greg Migliore and David Gluckman discuss the 2017 Detroit Auto Show, including the hot debuts, some new versions of bestsellers, and an unofficial theme we picked up on. Then it's on to what they've been driving lately, and we wrap up with Spend My (Your) Money buying advice to help you, our listeners. The rundown is below. Remember, if you have a car-related question you'd like us to answer or you want buying advice of your very own, send a message or a voice memo to podcast at autoblog dot com. (If you record audio of a question with your phone and get it to us, you could hear your very own voice on the podcast. Neat, right?) And please send trivia questions! You'll get the honor of stumping your fellow listeners, and we'll thank you too. Autoblog Podcast #499 The video meant to be presented here is no longer available. Sorry for the inconvenience. Topics and stories we mention Our 2017 Detroit Auto Show coverage America was the unofficial theme of the 2017 Detroit Auto Show 2017 Chevy Malibu Hybrid 2017 Volkswagen Passat 2017 Buick Envision Used cars! Rundown Intro - 00:00 Detroit show recap - 03:04 What we're driving - 25:04 Spend My Money - 35:46 Total Duration: 49:45 Get The Podcast iTunes – Subscribe to the Autoblog Podcast in iTunes RSS – Add the Autoblog Podcast feed to your RSS aggregator MP3 – Download the MP3 directly Feedback Email – Podcast at Autoblog dot com Review the show on iTunes Podcasts Detroit Auto Show Buick Chevrolet Ford Honda Jeep RAM Toyota Volkswagen Crossover Minivan/Van SUV Sedan Ford Bronco kia stinger gt

How Chevy used popular Instagram user to promote 2016 Volt

A picture is worth a thousand words. When it comes to Chevrolet and its Volt extended-range plug-in, the automaker is hoping pictures can be turned into a few more buyers. The company extended a little love to one popular social-media practitioner to see if the trick works. Former biochemical engineer Kevin Lu started his Instagram account a couple of years ago during a road trip, and the quality of his shots has attracted about 181,000 followers. With that popularity in mind, Chevy brought Lu up to Detroit to check out the unveiling of the next-generation Volt at the Detroit Auto Show last month. Lu also got to see the Detroit-Hamtramck Assembly factory where the Volt is built, Automotive News reports. As for the next-gen Volt, Chevy says a more efficient powertrain and lighter battery help give the car an all-electric range of up to 50 miles and a total driving distance of more than 400 miles. Chevy also touts the model's streamlined grille and (tight) seating for three in the rear. General Motors hopes a combination of those improvements and exposure from sources such as Lu and his Instagram account (and some sleepy ads, apparently) revitalize sales of the model. Last year, Volt sales fell 19 percent to 18,805 units. Related Videos: News Source: Automotive News-sub.req. via GM AuthorityImage Credit: Kevin Lu/Instagram Green Detroit Auto Show Chevrolet Detroit extended-range plug-in instagram