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Cadillac and Buick boost GM's return to growth in China

BEIJING — General Motors on Monday said continued market recovery from the COVID-19 crisis helped its China vehicle sales grow 12% on year in July-September, marking the Detroit automaker's first Chinese quarterly sales growth in two years. The second-biggest foreign automaker in China by units — after Germany's Volkswagen AG — said on Monday it had delivered 771,400 vehicles in China in the third quarter. That followed a 5% fall in the second quarter, when parts of China were still emerging from virus-busting lockdown measures. GM has a Shanghai-based joint venture with SAIC making Buick, Chevrolet and Cadillac vehicles. It has another venture, SGMW, with SAIC and Guangxi Automobile Group, producing no-frills minivans and which has started manufacturing higher-end cars. Sales rose 26% for cars under its mass-market Buick brand in the third quarter versus the same period a year earlier, while those of premium brand Cadillac jumped 28%, GM said in a statement. Sales of its mass-market Chevrolet marque fell 20%. Sales of no-frills brand Wuling grew 26%, whereas those of mass-market Baojun vehicles tumbled 19%. "GM's compact models returned to four-cylinder engines and that helped sales growth," said LMC Automotive senior analyst Alan Kang, referring to an attempt to market cleaner but noisier three-cylinder versions. "Cadillac also has a more complete lineup this year." China's biggest automakers' association expects overall car sales to grow by double digits in July-September versus a year earlier. Makers such as Toyota, Honda and Geely saw sales jump in the just-finished quarter. GM has seen its China sales suffer in a crowded market and slowing economy. To revive its fortunes, it plans to have electric vehicles (EVs) make up over 40% of new models in the next five years in China, where the government promotes greener cars. The automaker's Wuling Hong Guang MINI EV, a micro two-door EV with a starting price of 28,800 yuan ($4,200), was China's biggest-selling EV in August. GM's sales fell 15% in 2019 from a year earlier to 3.09 million vehicles. The automaker delivered 3.65 million vehicles in 2018 and 4.04 million in 2017. Related Video:

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

Autoblog Podcast #326

Easter Jeep Safari concepts, Shelby 1000, 2014 Cadillac CTS and Mercedes CLA45 AMG leaks
Episode #326 of the Autoblog Podcast is here, and this week, Dan Roth and Zach Bowman talk about this year's Easter Jeep Safari concepts, the 1,200-horsepower Shelby 1000 and leaked images of the 2014 Cadillac CTS and Mercedes-Benz CLA45 AMG. We wrap with your questions and emails, and for those of you who hung with us live on our UStream channel, thanks for taking the time. Keep reading for our Q&A module for you to scroll through and follow along, too. Thanks for listening!
Autoblog Podcast #326: