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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

Next-gen Chevy Volt will get 1.5-liter, four-cylinder engine

As General Motors gets ready to unveil the new Chevy Volt at the Detroit Auto Show in January, it's starting to reveal a few more details about the updated plug-in hybrid. Today should be fruitful on that front, thanks to an event GM is hosting today that focuses on the new Volt, and we've just had the first bit of new: a bigger engine is coming. Since the beginning, the Volt has used a 1.4-liter, four-cylinder engine as a range extender when the battery runs dry. The second-generation model will instead get a slightly larger 1.5-liter, four-cylinder engine that will be built in Flint, MI. That's a step up from the various engines that have been a part of the 2016 Volt's rumored mills, everything from a 1.0-liter or 1.2-liter three-cylinder to a 2.0-liter turbo. The confirmation about the new 1.5-liter powerplant was found in Automotive News, where we also heard again that GM is going to start building the new Volt's electric drive unit in Detroit, moving production up from Mexico. We will have more information on the 2016 Chevy Volt later today.

Bring back the Bronco! Trademarks we hope are actually (someday) future car names

Trademark filings are the tea leaves of the auto industry. Read them carefully – and interpret them correctly – and you might be previewing an automaker's future product plans. Yes, they're routinely filed to maintain the rights to an iconic name. And sometimes they're only for toys and clothing. But not always. Sometimes, the truth is right in front of us. The trademark is required because a company actually wants to use the name on a new car. With that in mind, here's a list of intriguing trademark filings we want to see go from paperwork to production reality. Trademark: Bronco Company: Ford Previous Use: The Bronco was a long-running SUV that lived from 1966-1996. It's one of America's original SUVs and was responsible for the increased popularity of the segment. Still, it's best known as O.J. Simpson's would-be getaway car. We think: The Bronco was an icon. Everyone seems to want a Wrangler-fighter – Ford used to have a good one. Enough time has passed that the O.J. police chase isn't the immediate image conjured by the Bronco anymore. Even if we're doing a wish list in no particular order, the Bronco still finds its way to the top. For now (unfortunately), it's just federal paperwork. Rumors on this one can get especially heated. The official word from a Ford spokesman is: "Companies renew trademark filings to maintain ownership and control of the mark, even if it is not currently used. Ford values the iconic Bronco name and history." Trademarks: Aviator, AV8R Company: Ford Previous Use: The Aviator was one of the shortest-run Lincolns ever, lasting for the 2003-2005 model years. It never found the sales success of the Ford Explorer, with which it shared a platform. We Think: The Aviator name no longer fits with Lincoln's naming nomenclature. Too bad, it's better than any other name Lincoln currently uses, save for its former big brother, the Navigator. Perhaps we're barking up the wrong tree, though. Ford has made several customized, aviation themed-Mustangs in the past, including one called the Mustang AV8R in 2008, which had cues from the US Air Force's F-22 Raptor fighter jet. It sold for $500,000 at auction, and the glass roof – which is reminiscent of a fighter jet cockpit – helped Ford popularize the feature. Trademark: EcoBeast Company: Ford Previous Use: None by major carmakers.