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Opel director Sedran to succeed Docherty as Chevy Europe boss

When longtime General Motors executive Susan Docherty announced she would be stepping down from her post as the head of Chevrolet and Cadillac in Europe, there was some idle chatter that plans for the creation of a new global overseer position for the Bowtie brand was behind the move. And while US sales chief Alan Batey has indeed assumed control of Chevy worldwide since her departure announcement, Docherty's vacancy is being filled after all, with Opel chief strategist Thomas Sedran taking up the reins.
That's according to Automotive News, who reports that Sedran will be tasked with pulling Chevy out of a sales funk, much of it pegged on Europe's stagnant auto industry, which has sunk to a 20-year low. AN notes that Chevy's EU sales plunged 32 percent to 57,584 units through the first five months of 2013, but the everyday value brand is faring worlds better than Cadillac, which has sold just 167 units in Europe over the same time period.
Sedran, 48, has been in the auto industry for over 20 years. Most recently, at Opel he had been working on long-term plans for the marque, and was appointed to the brand's management board in April of last year. Prior to joining GM, Sedran was employed as a management consultant for AlixPartners, where he worked closely with Opel for six years. Sedran will assume his new duties beginning July 1.

Steve Carlisle replaces Johan de Nysschen as head of Cadillac

Johan de Nysschen, a longtime automotive industry executive, is out the door at Cadillac after four years at the helm of GM's flagship luxury brand. Steve Carlisle will replace de Nysschen as General Motors senior vice president and president, Cadillac. Carlisle previously served as president and managing director of GM Canada. Travis Hester will replace Carlisle in that role, starting immediately. "We appreciate Johan's efforts over the last four years in setting a stronger foundation for Cadillac," said General Motors President Dan Ammann. That strong foundation is mostly seen overseas. Cadillac has seen record sales in China under de Nysschen's watch, but has continued to flounder in its home market of the United States with market share significantly lower than rival brands like Audi, BMW, Lexus, and Mercedes-Benz. Growth in the U.S. market is mostly happening with crossovers and SUVs, and Cadillac has been trailing its German and Japanese rivals on that front. The brand-new XT4 is seen as a big potential sales booster for the automaker, but its late arrival has already hurt the brand's sales figures here in America. "Looking forward, the world is changing rapidly, and, beginning with the launch of the new XT4, it is paramount that we capitalize immediately on the opportunities that arise from this rate of change," said Ammann. "This move will further accelerate our efforts in that regard." Carlisle will report directly to Ammann in his role as the head of the Cadillac brand. 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