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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

Jeep Twitter account hacked, bad language, poor grammar and some hilarity ensue

Just a day after Burger King's Twitter account was compromised by "unauthorized users," Jeep's social media feed has been similarly hacked. Both instances of digital incursion share some similarities - the BK hackers changed the company's logo for McDonald's familiar golden arches, saying a sale had occurred, while the Jeep miscreants have replaced Jeep's branding with that of General Motors property Cadillac.
The resulting tweets from the damaged Jeep account have been a pretty brutal, to put it bluntly. Most of the content coming from the hacked account is unpublishable here, using language that is peppered with racial epithets, and poorly worded "shout outs."
In addition to the defamatory tweets themselves, the hackers have significantly altered the layout of the page. Jeep's header image now features a picture of the Cadillac ATS to go along with the Wreath and Crest, some language calling out that car as winning the 2013 North American Car of the Year award, and this gem: "The official Twitter handle for the Jeep(R) - Just Empty Every Pocket, Sold To Cadillac =[" Also, perhaps in an ode to yesterday's Burger King heist, the background image for the page now features a McDonald's-themed donk. The devil's in the details, we guess.

Season 9 of Comedians in Cars Getting Coffee teases us with BMWs and Volvos

Jerry Seinfeld's successful online show Comedians in Cars Getting Coffee is heading into its ninth season, returning January 5th. It should be no surprise that the list of actors and comedians is impressive, with Kristen Wiig, Christoph Waltz, and more making appearances. Seinfeld has lined up an equally impressive list of cars for the new season. Porsche, BMW, and Volvo all have beautiful machines lined up to shuttle Seinfeld and his guest to different coffee shops. As always, it's a mix of light humor packed into a relatively short and, most importantly, free video. Catch up on the previous eight seasons now on Crackle. Related Video: News Source: YouTubeImage Credit: YouTube Celebrities Humor Acura BMW Cadillac Porsche Volvo Convertible Coupe Luxury Performance Classics Videos Sedan trailer jerry seinfeld comedians in cars getting coffee seinfeld