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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

GM investing $439 million in Corvette plant

General Motors is slowly trickling out announcements about its $5.4 billion in US plant upgrades over the next three years. The latest one is something that fans of one of America's most beloved sports car will be happy about. The Bowling Green, KY, factory that assembles the Chevrolet Corvette is receiving $439 million of those funds to build a new paint shop. Covering 450,000 square-feet, the site will make painting the 'Vette more efficient and environmentally friendly. The upgrades there include robots that use paint more effectively, technology to eliminate sludge water, LED lighting to improve inspections, and less energy-intensive baking ovens. While the groundbreaking is already complete for the building, full construction is expected to begin this summer and take two years. This is the biggest upgrade for the Kentucky factory in a few years. In preparation for the latest Corvette, the Bowling Green plant received $131 million in 2011 for upgrades and to add more workers there. Related Video: Chevrolet Corvette Plant Gets $439 Million in Upgrades New, environment-friendly paint shop drives efficient production, retains 150 jobs 2015-05-21 BOWLING GREEN, Ky. – Torch Red, Shark Gray Metallic and Laguna Blue Tintcoat, three popular palate choices on the 2015 Corvette, kept the marketers who make up names working late. Now they can dream about more painstakingly precise pigments, thanks to a new paint shop that is among $439 million being invested at the only plant in the world that builds Chevrolet's iconic sports car. General Motors announced the moves today that include retaining 150 jobs and building the 450,000 square-foot paint shop that is almost half the size of the entire current production facility. The investment builds on approximately $135 million GM has invested in the plant over the last four years for the new Corvette Stingray and Performance Build Center. The announcement was followed by a groundbreaking event for the new paint shop. "The Corvette is one of Kentucky's most-cherished icons," said. Lt. Gov. Crit Luallen. "Such a significant expansion of the Bowling Green Assembly Plant will help the company remain competitive in the region and around the world." Construction of the new paint shop, which includes substantial technology upgrades, is planned to begin this summer and take approximately two years to complete. Corvette production schedules will be unaffected by the construction.

Best 3rd Row SUVs of 2024

If you plan on using a vehicle's third row a lot, let us at least make the suggestion that a minivan would be a smarter bet than anything you're going to see on this list of best three-row SUVs. Their third rows are bigger, more comfortable and easier to get to. The kids will definitely be happier. Here are our two top choices.  OK, now that that's out of the way, we totally get why minivans are totally depressing and that if the kids want to be happier, they can buy their own darn vehicle. You're buying, you're driving, you're being seen in it and you'd rather have a three-row SUV. Fair enough. Luckily, there are more choices than ever and they're really good. The best do a particularly good job of being family friendly without looking like a drab transportation appliance, although really, you can't go wrong with any of the mainstream three-row SUVs. Now, some of the luxury choices are a bit suspect, including those that are otherwise very appealing but have cramped third-row seats (the Genesis GV80 comes to mind). We're focusing on three-row SUVs here, so having a usable third row is a must.   In this list, we have broken things down into four sub-categories: Best Three-Row Crossover |  Best Full-size Three-Row SUV Best Luxury Three-Row SUV |  Best Flagship Luxury Three-Row SUV Note that we define crossovers as SUVs since most buyers use the terms interchangeably, but acknowledge that "crossover" is literally a vehicle with a car-like unibody structure as opposed to the truck-like, body-on-frame construction that traditionally has defined "SUV." In other words, we consider all crossovers SUVs, but not all SUVs are crossovers (specifically those in the full-size segment and some in the flagship luxury segment). Best Three-Row Crossover SUVs of 2024 2024 Honda Pilot Why it stands out: Exceptional storage and cargo space; unique second-row functionality; refined ride; versatile and capable TrailSport; advanced AWDCould be better: Subpar acceleration with lackadaisical transmission and engine response; so-so driver assistance tech Read our full 2024 Honda Pilot Review The Honda Pilot was completely redesigned for 2023. It maintains its predecessor's family friendly packaging and overall focus, but it has injected a welcome sense of style (especially in the TrailSport pictured above) that makes it stand out much better from the big crossover crowd.