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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

2023 Chevy Colorado, GMC Canyon and Ford Maverick Tremor | Autoblog Podcast #741

In this episode of the Autoblog Podcast, Editor-in-Chief Greg Migliore is joined by Senior Editor Jeremy Korzeniewski. In the news, GM has revealed the 2023 Chevy Colorado and teased the 2023 GMC Canyon. The Chevy Silverado EV has surpassed 100,000 reservations. A new Mustang will be revealed in Detroit next month. Sebastian Vettel will retire from F1 following this season. Also, the 2023 Ford Maverick Tremor has been revealed. Our hosts talk about old muscle cars, and how they weren't as fast as we thought. We've been driving the Lexus LC500 Convertible and the turbocharged Mazda3 Hatchback. Jeremy just got home from driving a new electric UTV from Polaris. Finally, we reach into the mailbag to help a listener decide on a used van. Send us your questions for the Mailbag and Spend My Money at: Podcast@Autoblog.com. Autoblog Podcast #741 Get The Podcast Apple Podcasts – Subscribe to the Autoblog Podcast in iTunes Spotify – Subscribe to the Autoblog Podcast on Spotify RSS – Add the Autoblog Podcast feed to your RSS aggregator MP3 – Download the MP3 directly Rundown News 2023 Chevy Colorado revealed, with ZR2 and new Trail Boss 2023 GMC Canyon teased, debuts August 11 2024 Chevy Silverado EV passes 150,000 reservations New Ford Mustang will debut Sept. 14 at the Detroit Auto Show Sebastian Vettel will retire at end of 2022 F1 season 2023 Ford Maverick Tremor gets some real off-road chops Feature: Our old muscle cars aren't as fast as we thought they were Cars we're driving 2022 Lexus LC500 Convertible 2022 Mazda 3 turbo hatchback 2022 Polaris Ranger XP Kinetic electric UTV Spend My Money: Van edition Feedback Email – Podcast@Autoblog.com Review the show on Apple Podcasts Autoblog is now live on your smart speakers and voice assistants with the audio Autoblog Daily Digest. Say “Hey Google, play the news from Autoblog” or "Alexa, open Autoblog" to get your favorite car website in audio form every day. A narrator will take you through the biggest stories or break down one of our comprehensive test drives. Related video:

C7 Corvette makes inaugural ad appearance in Chevy's first spot with new slogan

Chevrolet's "Runs Deep" tagline has finally been run into the ground, replaced with the Bowtie brand's "Find New Roads" slogan that's part of parent General Motors' plan to unify its everyday brand's marketing efforts worldwide. The new Chevrolet campaign was ushered in on prime time last night during the Grammy Awards on CBS, and the first spot, a 90-second full-line ad, also marks the first appearance of the 2014 Corvette Stingray in a commercial.
Being a full-line ad, the commercial is composed of vignettes centered on different vehicles in the brand's lineup. The all-new 2014 Impala also makes its first commercial appearance in dapper fashion, and time is spent on a skateboarding Sonic and a bouquet of brightly colored Spark hatchbacks driven by fashionable women. The ad starts and ends with Chevy's green halo car, the Volt, along with a young girl with her robotic dog (yes, really).
Chevrolet's "Runs Deep" campaign got off to a rocky start in the fall of 2010, but it did last for a couple of years with some tweaks. This new one, "Find New Roads" seems more intent on drawing new customers into the fold than the outgoing tagline, which seemed to play more toward the brand faithful. It admittedly reminds us more than a little the short-lived "Find Your Own Road" Saab motto (which, we note, was conceived while the Swedish brand was under GM's control), but no matter, we still think it's got more long-term potential than "Runs Deep."