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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 Ram Rebel, Range Rover and Civic vs. Integra | Autoblog Podcast #753

In this episode of the Autoblog Podcast, Editor-in-Chief Greg Migliore is joined by Senior Editor (Reviews + West Coast) James Riswick for a jam-packed episode. They start off talking SUVs and trucks. James spent some time off-roading the 2023 Ram Rebel and the brand new 2023 Land Rover Range Rover. From there, they pivot to a discussion of the new Honda CR-V. Next up is the all-electric Cadillac Lyriq, followed by a brief discussion of the merits and drawbacks of the Honda Civic Hatchback Sport Touring vs. the new Acura Integra. We have our favorites; do you? After that, they spend a listener's money; this week's is a repeat customer from 2017.  Send us your questions for the Mailbag and Spend My Money at: Podcast@Autoblog.com. Autoblog Podcast #753 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 2023 Ram Rebel 2023 Land Rover Range Rover 2023 Honda CR-V 2023 Cadillac Lyriq 2023 Honda Civic Hatch Sport Touring 2023 Acura Integra Spend my money! 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: 2023 Cadillac Lyriq walkaround

Cadillac reveals futuristic EV crossover in Detroit

Cadillac just revealed a futuristic EV crossover model at an off-site event before the Detroit Auto Show. The vehicle doesn't have a name now, but Cadillac says that and additional information will be revealed closer to the car's launch. Any sort of specifications, range and things of that matter are not available right now. Although, Cadillac mentions we can expect both two- and all-wheel drive and for it to be sold globally. What we know for sure is that this vehicle is meant to preview an actual production model at least somewhat resembling this one. As we look at the two photos, this vehicle looks a bit concept-like but probably won't need a whole lot of change to make it production-ready. When that production will start, Cadillac doesn't make any mention of either. GM said on Friday that Cadillac "will be at the vanguard of the company's move toward an all-electric future." This reveal is the first vehicle related to that goal since the statement only a couple of days prior. We contacted Cadillac in an attempt to understand a bit more about where this car stands in the concept versus production car realm, and will update when we learn more. For now, take a gander at what Cadillac says represents the future of its brand. Related video: