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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

2019 Chicago Auto Show photo gallery: All of the grilles

Do you like trucks? How about grilles? Like really big, shiny, chromey, in-your-face, could-be-made-by-Broil-King grilles? Well, the Chicago Auto Show is the place to be. Traditionally known as the truck show of the annual auto show circuit (at least those covered by national media), Chicago has what seems like a small national park's worth of acreage devoted to both consumer and commercial trucks. From humble extended cab Ford Rangers to a mammoth F-650 with cherry picker sprouting from its aft quarters, there's bound to be a truck for everything. And they all have grilles. So above is our gallery devoted to them, because hell, why not? Should you want to know about the trucks attached to those grilles, check out our coverage below. Heavy Duty Trucks 2020 Chevrolet Silverado HD revealed, tows 35,500 pounds 2020 GMC Sierra HD revealed, has more subtle looks than Chevy sibling 2019 Ram Heavy Duty trucks get new face, 1,000 pound-feet of torque 2020 Ford F-Series Super Duty revealed, adds massive gas engine Full-Size Trucks Read how all of the full-size trucks compare to each other 2019 Chevrolet Silverado First Drive 2019 Chevrolet Silverado 2.7L Turbo First Drive 2019 GMC Sierra First Drive 2019 GMC Sierra AT4 First Drive 2019 Ram 1500 Laramie Quick Spin Review 2019 Ram 1500 eTorque Drivers' Notes Review 2019 Ford F-150 2.7L EcoBoost Quick Spin Review 2018 Ford F-150 King Ranch Power Stroke Diesel Review Related Video: Featured Gallery 2019 Chicago Auto Show: All of the grilles View 40 Photos Chicago Auto Show Chevrolet Ford GMC RAM Truck chevrolet silverado

Ford, Toyota clean up in Best Car For The Money Awards

The U.S. News Best Cars for the Money Awards picks winners by looking at the average transaction price, five-year total cost of ownership, the regard a car has from the automotive press, reliability figures from J.D. Power and Associates and safety data from the National Highway Traffic Safety Administration and the Insurance Institute for Highway Safety. The result, according to the magazine, is "the best combination of critical acclaim and long-term value."
Ford nabbed six of the 21 categories that received awards this year, the Focus, Fusion, Fusion Hybrid, Taurus, Escape and Edge getting trophies. Toyota and its Lexus and Scion sub-brands took another five, the Tacoma and Tundra owning the two categories given to pickup trucks. The other ten awards were split between Honda with three, Buick with two, and one each for Subaru, BMW, Hyundai, Chevrolet and Mazda.
Follow the link to see all the winners and read about why they were chosen.