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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

2016 Chevy Camaro coming on May 16

We officially have a date for the arrival of the sixth-generation Chevrolet Camaro. Fans of Chevy's Mustang fighter should look forward to May 16, and if they're in the Detroit area, they'll want to make their way down to Belle Isle, home of the Chevy Indy Dual in Detroit. We still don't have a great deal of information on the new Camaro, aside from what's been gleaned in spy shots and the like, although Chevy's press release was accompanied by the image shown above. That, friends, looks a lot like the Camaro's badge of old. Its presence here could be an indication that an old logo is set to return to production. That's because what Chevy is planning could best be described as a jamboree, or Camaro-palooza, if you prefer, rather than a typical unveiling. Chevy is inviting up to 1,000 Camaro fans to descend on Belle Isle for a day-long event that will offer up a lot more than their first look at the sixth-generation muscle car. Fans can hot lap the Belle Isle circuit from the passenger's seat of a new Z/28, check out a Camaro "museum," featuring "the most significant vehicles from the brand's history," and chat with some of the Camaro's designers and engineers. "This will be an event Camaro fans will not want to miss," Camaro marketing manager Todd Christensen said in a statement. "This is only the sixth time we have introduced an all-new Camaro. We wanted to share the moment with the customers and fans who have helped make Camaro both America's favorite performance car for the past five years, and a cultural icon since 1967." We'll almost certainly be on hand for the debut (and you'll absolutely be able to get all the details here). And as we said, if you happen to be in the Detroit area in mid May, you can register to attend the unveiling. All you need to do is head over to Chevy's dedicated website for the sixth-generation Camaro and sign up for the big event, on Saturday, May 16. Scroll down for the full press release. 2016 Camaro Drops Cover on May 16 in Detroit DETROIT – Chevrolet is inviting fans to see the all-new 2016 Camaro on Saturday, May 16, in Detroit. The sixth-generation Camaro will cap a day-long celebration on Belle Isle, the 982-acre island park that is home to the Chevrolet Detroit Belle Isle Grand Prix May 29-31. "This will be an event Camaro fans will not want to miss," said Todd Christensen, Camaro marketing manager. "This is only the sixth time we have introduced an all-new Camaro.

GM recalls 330,000 fullsize trucks for airbag replacement

General Motors has announced a recall of 330,198 fullsize pickups in the US in the aftermath of the announcement made on May 19 that doubled the number of vehicles being called in to replace Takata's defective airbag inflators. That announcement expanded the nationwide recall to an estimated 33.8 million vehicles in the US. Heavy Duty versions of the 2007 and 2008 Chevrolet Silverado and GMC Sierra are included in GM's move, for the purpose of replacing the passenger airbag inflators. The announcement made by the National Highway Traffic Safety Association cited long-term exposure to moisture as a possible cause of the inflator issues. GM says it isn't aware of any problems with the recalled pickups due to moisture, nor has it had any reports of crashes, injuries, or fatalities, and has not received any complaints. GM will notify owners, who can then take their trucks to the dealers to have them repaired free of charge. You'll find a statement from GM and the recall notice from NHTSA below. Related Video: General Motors Statement General Motors is recalling 330,198 2007 and 2008 model year full-size Chevrolet Silverado heavy duty and GMC Sierra heavy duty pickup trucks in the U.S. to replace the passenger air bag inflators manufactured by TK Holdings Inc. (Takata). This recall implements Takata's air bag inflator equipment recall announced on May 19, 2015 (NHTSA recall number 15E-041). GM is not aware of any humidity-related ruptures in Takata air bag inflators in any GM-badged vehicles in the field and knows of no crashes, injuries, fatalities or complaints regarding air bag performance in these vehicles. Including Canada and exports, the total number of vehicles being recalled is 374,715. Population breakdown: United States 330,198 Canada 39,630 Exports 4,887 Total 374,715NHTSA RECALL NOTICE: Report Receipt Date: MAY 28, 2015 NHTSA Campaign Number: 15V324000 Component(s): AIR BAGS Potential Number of Units Affected: 330,198 Manufacturer: General Motors LLCSUMMARY: General Motors LLC (GM) is recalling certain model year 2007-2008 Chevrolet Silverado 2500HD and 3500HD trucks manufactured November 28, 2006, to August 29, 2008, and 2007-2008 GMC Sierra 2500HD and 3500HD trucks manufactured November 27, 2006, to August 29, 2008.