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Cadillac confirms 'Blackwing' name, manual gearboxes for pumped-up CT4-V, CT5-V

Cadillac officially confirmed Tuesday that the high-output variants of its new CT4-V and CT5-V sedans will be dubbed "Blackwing," sharing a nameplate with GM's stillborn twin-turbocharged V8. As an added bonus, company representatives said for certain that both of Cadillac's new super-sedans will be offered with a manual transmission, confirming long-standing rumors to that effect.  "The Blackwing name has come to represent the very best of Cadillac performance engineering, craftsmanship and technology," said Cadillac chief engineer Brandon Vivian. "The new CT4-V Blackwing and CT5-V Blackwing build on the brand’s respected legacy of ultimate-performance driving experiences and elevate them even further." Cadillac says the two Blackwing sedans, which are successors to the critically acclaimed ATS-V and CTS-V, will represent "the apex of Cadillac performance and driver engagement." The company also remained mum on just what to expect in terms of capability, teasing only the fact that both the CT4-V and CT5-V Blackwing posted quicker lap times in testing at Virginia International Raceway earlier this year than their predecessors did.   Rumors have pointed to the CT5-V Blackwing making use of the company's supercharged 6.2-liter V8, which also powered its predecessor. The 6.2 shares its architecture with the company's flagship, naturally aspirated V8, making it an economical choice for powering performance cars. The smaller CT4-V is likely to be motivated by a turbocharged 6-cylinder. They will also be available in limited numbers, though Cadillac's announcement did not elaborate on just how many (or few, as the case may be) will eventually be built, or how many model years to expect. The CT6-V, which carries the 4.2-liter V8 that shares the "Blackwing" name, saw only limited production before being axed.  The V8 itself may find a new home down the road, but for the time being, it's toast.  Cadillac assured us that more information on the new CT4-V and CT5-V Blackwing will be come along soon enough. For now, at least we know what they're going to be called.  Related Video:    

GM wants to have 10 plug-in models in China in five years

Last we checked, General Motors was selling all of three plug-in vehicle models in its home country of the US, and is prepared to make the Chevrolet Bolt EV available on these shores later this year. So it's notable that the automaker is hatching plans to have at least 10 plug-in variants for sale in China within the next five years, according to Hybrid Cars. Which plug-ins are coming remains a mystery. GM started selling a hybrid version of the Buick LaCrosse in China this month. The strategy makes sense, as China is now the world's largest car market, and accounts for about a third of GM's annual revenue. The automaker, which operates in China under the SAIC-GM and SAIC-GM-Wuling joint ventures, sells cars there under the Chevrolet, Buick, Cadillac, and Boujun badges, and has been doing so for the better part of two decades. Most recently, GM started selling a hybrid version of the Buick LaCrosse in China this month. What we do know is that GM is building its Cadillac CT6 Plug-in Hybrid in China, with distribution to be split between China and the US. That model, which is scheduled to start sales by the end of the year, is being built overseas because of a combination of Chinese government support for new-energy vehicle technology through incentives and the fact that battery-pack maker LG Chem makes most of its cells in nearby South Korea. The plug-ins are part of a broader plan by General Motors to either introduce or substantially tweak about 60 models by the end of the decade. With such new models, GM looks to boost unit sales by as much as five percent a year for the next few years. As for the other nine plug-in models slated for China by 2021, the company is mum. GM spokesman Dan Flores declined to comment to AutoblogGreen. Related Video: Featured Gallery 2016 Cadillac CT6: First Drive View 32 Photos News Source: Hybrid Cars Green Cadillac Chevrolet GM Electric Hybrid PHEV

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