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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

Watch the National Corvette Museum sinkhole being filled in by R/C cars

Okay, so not exactly cars, but Bobcats - but still quite cool. You might remember that the National Corvette Museum had that little divot that needed to be filled in. Turns out the construction firm of Scott, Murphy & Daniel doing the work is using two remote-controlled Bobcats to fill the sinkhole with "manufactured sand," which in this case is crushed limestone. It appears that the Bobcat company has offered remote operation since at least 2007 via a wireless transmitter that works up to 1,500 feet away. So yes, that means two SMD employees stand on the edge of the pit and flick joystick levers for hours at a time, one in charge of a Bobcat with a roller-compactor attachment, the other in charge of a Bobcat with a bucket. And that, to us, is a pretty good way to earn the daily bread. Check out the video above for the latest sinkhole update. News Source: National Corvette Museum via YouTube Auto News Weird Car News Chevrolet GM Videos rc car remote control National Corvette Museum bobcat ncm

GM posts $4 billion third-quarter profit thanks to trucks and SUVs

DETROIT — General Motors is posting huge third quarter numbers, pulling in $4 billion in profit over three months after losing money due to the virus outbreak. GM's adjusted earnings were $2.83 per share, easily outpacing Wall Street's per-share projections of $1.43, according to a survey by FactSet. Revenue of $35.5 billion also edged out most expectations. Shares jumped almost 6% before the opening bell Thursday. The company swung back from a $806 million loss in the second quarter, when it was restarting factories shuttered for safety during the early stages of the pandemic. The Detroit automaker joined most global automakers in reporting better-than-expected earnings from July through September as sales across the globe started to rebound from coronavirus lockdowns, especially in China. GM sales in China jumped 12% in the third quarter, with sales of its Buick and Cadillac brands both rising more than 25%. In the U.S., GMÂ’s most profitable market, sales fell 9.9% in the third quarter compared with a year ago, but were a dramatic improvement over the 34% drop in the second quarter. Sales improved sequentially each month, the automaker said, an encouraging trend. GMÂ’s profit was boosted by higher-priced pickup trucks and large SUVs, which have seen strong sales in the U.S. through the pandemic. It was the best quarter on record for GM's Chevrolet Blazer. Sales of the Cadillac XT6 spiked 45% in the U.S. over last year. Large pickups also sold well. GM also said it was pumping $2 billion into its Spring Hill, Tennessee manufacturing plant to push its transition to produce electric vehicles. Last week, crosstown rivals Fiat Chrysler and Ford reported strong third-quarter net income. FCA said it made $1.4 billion for the period, while Ford earned $2.39 billion. Related Video: Earnings/Financials Buick Cadillac Chevrolet GM GMC