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GM seeks national mandate for zero-emissions cars

DETROIT — General Motors says it will ask the federal government for one national gas mileage standard, including a requirement that a percentage of auto companies' sales be zero-emissions vehicles. Mark Reuss, GM's executive vice president of product development, said the company will propose that a certain percentage of nationwide sales be made up of vehicles that run on electricity or hydrogen fuel cells. GM says a nationwide program modeled on such a requirement in California could result in 7 million electric vehicles, or EVs, on U.S. roads by 2030. California wants 15.4 percent of vehicle sales by 2025 to be EVs or other zero emission vehicles. Nine other states, including Maryland, Massachusetts, New Jersey and New York, have adopted those requirements. In January, California Governor Jerry Brown set a target of 5 million zero-emission vehicles in California by 2030. The Trump administration criticizes California's ZEV mandate, saying it requires automakers to spend tens of billions of dollars developing vehicles that most consumers do not want, only to sell them at a loss. Reuss told reporters that governments and industries in Asia and Europe "are working together to enact policies now to hasten the shift to an all-electric future. It's very simple: America has the opportunity to lead in the technologies of the future." A national mandate also would create jobs and reduce fuel consumption, CO2 emissions and "make EVs more affordable," Reuss added. GM, the nation's largest automaker, will spell out the request Friday in written comments on a Trump administration proposal to roll back Obama-era fuel economy and emissions standards, freezing them at 2020 levels instead of gradually making them tougher. Under a regulation finalized by the Environmental Protection Agency at the end of the Obama administration, the fleet of new automobiles would have to get 36 miles per gallon by 2025, 10 mpg higher than the current requirement. But the Trump administration's preferred plan is to freeze the standards starting in 2021. Administration officials say waiving the tougher fuel efficiency requirements would make vehicles more affordable, which would get safer cars into consumer hands more quickly. GM on Thursday said it doesn't support the freeze, but wants flexibility to deal with consumers' shift from cars to less-efficient SUVs and trucks.

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

Despite De Nysschen saying it won't, Cadillac cuts struggling CTS prices

Ah, well that didn't last long. Not even two years after elevating the price of the then-new third-generation Cadillac CTS by $7,000, the company is now stepping back, telling dealers it will be slashing the price of the 2015 model by anywhere from $1,000 to $3,000. It seems that there are two reasons behind Cadillac's move. First, and most obviously, are its slumping sales, down seven percent last year. That figure is made worse, Automotive News reports, by the seven-percent gain made by the greater luxury market, not to mention gains from fellow American luxury brand Lincoln. Cadillac, meanwhile, also likely faced pressure from its dealer body, which AN reports hasn't been so keen on the price increases. The price reduction is something of a surprise following statements made by Cadillac President Johan de Nysschen shortly after he took office. In September of last year, the 54-year-old exec, who took charge of Cadillac in July of 2014, defended the company's decision to raise prices, telling Automotive News a price cut was "not going to happen." It seems current conditions contradict de Nysschen's statements, though. "We're taking what we've seen are the more desirable optional features for customers and making them more readily available," Cadillac's Dave Caldwell said of the price cut. "Once a car has been on the market for a while, it's not unusual to look at the customer behavior and try to optimize for it." In what's sure to be a pleasant surprise for anyone in the market for a CTS, the most expensive models are getting the biggest price cut, with the price on the Premium and Performance Collection sedans dropping $3,000, AN reports. The 2.0T will get a $2,000 drop, while certain optional extras will now be standard on the Luxury trim, including a panoramic sunroof, navigation and Bose stereo.