2022 Cadillac Xt6 Premium Luxury on 2040-cars

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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.

2013 Cadillac ATS 3.6 AWD

All-Wheel, All Right
There is no escaping the luxury all-wheel drive empire Audi has built for itself over the past 15 years. While nearly every high-end marque has at least one offering with power at all four corners, the hardware can't help but play second fiddle to Ingolstadt's Quattro kingdom. Leather-lined all-wheel drive is simply Audi the way minimum wage is an English degree. But General Motors seems hell-bent on raiding as many established fiefdoms as possible with the 2013 Cadillac ATS. Engineers and designers made no secret of the fact that the baby Cadillac was penned specifically to take on the BMW 3 Series, but Audi should be no less concerned about the newest luxury prince from Detroit.
GM has been stuffing all-wheel drive systems under their vehicles for years, but the effort hasn't come without nasty side effects. Unfortunate understeer, extra ride height, smallish wheels and porky curb weight meant opting for all-wheel drive was like signing your driving pleasure's death warrant. Would you like polished brass or brushed nickel hardware for your right foot's coffin, sir?