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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

Outrageous Thor24 semi truck to appear in the new season of 'Jay Leno's Garage'

Wednesday is Jay Leno's birthday, and CNBC used the occasion to announce the upcoming season of Jay Leno's Garage. In a new teaser video, Leno is seen with a stacked list of guests, some new, some repeats, as well as a wild gamut of vehicles, including the absolutely insane 24-cylinder, 3,424-horsepower Thor24.  The outrageous semi build, which sold at auction in Saudi Arabia earlier this year for a whopping $12 million (or $1 million per supercharger) will join the likes of the Tesla Cybertruck and a recliner on wheels on the upcoming season of Jay's series.  Thor24 View 24 Photos The formula for Jay Leno's Garage is simple, successful, and not changing anytime soon. He brings out a bunch of famous people, some of which are real enthusiasts, others who have more casual driving backgrounds, and they experience a vehicle together. In the short clip released by CNBC, Leno is accompanied by Elon Musk (again), Danny Trejo, Bill Burr, Tim Allen, Jon Hamm, Brad Garrett, Jeff Dunham, Kelly Clarkson, Matt LeBlanc, Blake Shelton, Norm MacDonald, Edd China, and Jon Lovitz.           View this post on Instagram                   Thank you for sharing your dream with us. Happy Birthday, Jay! Love always, your @cnbcprime Family. A post shared by Jay Leno's Garage (@jaylenosgarage) on Apr 28, 2020 at 8:27am PDT The people, however, are merely social lubricants to spotlight the real stars of the show, the cars. This season will include the Tesla Cybertruck, the record-breaking Bugatti Chiron Super Sport 300+, a 1965 Buick Riviera, a naked cat car, an Aston Martin DBS Superleggera, a Porsche Taycan, a modern Ford GT, a Chevrolet Corvette C8 hard-top convertible, amphicars, a snail car, a beetle car, a couch car, and the 24-cylinder, 12-supercharger, 3,424-horsepower Thor24 semi. Just to name a few. As usual, there will be racing, stunts, spinouts, smoke from both tires and engines, and lots of silly dad jokes. Season 5 of Jay Leno's Garage debuts on CNBC on May 20 at 10 p.m. ET. Related Video: Celebrities Green TV/Movies Aston Martin Bugatti Chevrolet Tesla Special and Limited Editions Jay Leno Jay Lenos Garage

GM throttles back Chevy Malibu, Buick LaCrosse production over swollen inventories

As inventory of the Chevrolet Malibu and Buick LaCrosse continues to pile up, General Motors will be idling its Fairfax Assembly Plant for two weeks, according to Automotive News. This move comes about a month after the plant was shut down for three weeks in late December and early January for the same reason. As of January 31, the GM had a 94-day supply of Malibu stock while the LaCrosse was a little worse with a 117-day supply.
Just last week, GM announced that it would be investing $600 million in upgrading this plant, but it's unclear what future plans the company has in store for Fairfax considering slow sales of both the plant's models. We do expect a refreshed and more luxurious LaCrosse shortly and an early design update for the Malibu to be announced at some point this year, although we have had no official word as to when either will happen.