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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

GM puts e-commerce shopping in car dashboards

DETROIT — General Motors on Tuesday said it will equip newer cars with in-dash e-commerce technology, betting it can profit as drivers order food, find fuel or reserve hotel rooms by tapping icons on the dashboard screen, instead of using smartphones while driving. GM's Marketplace technology, developed with IBM, will be uploaded automatically to about 1.9 million model-year 2017 and later vehicles starting immediately, with about 4 million vehicles across the Chevrolet, Buick, GMC and Cadillac brands equipped with the capability in the United States by the end of 2018, GM said. GM will get an undisclosed amount of revenue from merchants featured on its in-dash Marketplace, Santiago Chamorro, GM vice president for global connected customer experience, said during a briefing for reporters. Customers will not be charged for using the service or the data transmitted to and from the car while making transactions, he said. "This platform is financed by the merchants," Chamorro said. GM will get paid for placing a merchant's application on its screens, and "there's some level of revenue sharing" based on each transaction, he said. It is too soon to say how much revenue GM could realize from the Marketplace system, he said. The GM Marketplace will compete for customer clicks and revenue with hand-held smartphones, which offer a far richer array of applications than the GM system will at the outset. Amazon.com is partnering with other automakers, including Ford, to offer in-car e-commerce capability through Amazon's Alexa personal assistant system. For example, GM will launch Marketplace with just Shell and Exxon Mobil icons in the fuel category. The only restaurant available for in-car table reservations at launch is the chain TGI Fridays, GM said. In addition, there will be apps for parking, and ordering ahead at coffee shops and restaurants such as Starbucks, Dunkin' Donuts and Applebee's. "We will be adding more vendors," with some coming in the first quarter of 2018, Chamorro said. In addition, he said GM plans to expand integration into its vehicles of music, news and other information services. GM also hopes to use its in-car Marketplace connections to expand purchases of products and services, such as additional access to in-car wifi, from its own replacement parts business and dealer network. Customers can "expect to see more service promotions coming through the platform," Chamorro said. Reporting by Joe WhiteRelated Video:

2017 Chevy Cruze Hatchback updated with utility and style

Ford, Hyundai, Kia, and Scion all have compact hatches on offer, and now Chevrolet joins the fray with the 2017 Cruze Hatchback. Based on the second-generation Cruze, the new body style offers an economical way of scoring a total of 42 cubic feet of cargo space without upgrading to a crossover. Like the sedan, the new hatch comes to market with a turbocharged 1.4-liter four-cylinder good for 153 horsepower and 177 pound-feet of torque. That's it – no naturally aspirated engines here. That engine will be paired with either a six-speed manual or a HydraMatic six-speed auto. Fuel economy should be just as impressive as the sedan, projected to hit 40 miles per gallon on the highway. While looks are subjective, we think that the Cruze Hatchback may be sharper-looking than the sedan. The long, pointy nose looks more balanced with the long roof. The rear end looks good, but that rear aperture is awfully tiny and sits above a high rear bumper – not ideal for a vehicle that consumers will buy because of its versatility. We've got a small gallery from the media scrum at the Cruze Hatchback's Detroit debut above, as well as full video of the press conference with live reaction below. Have a look. Chevrolet Introduces 2017 Cruze Hatch HERE'S THE STORY Ahead of its debut at the North American International Auto Show, Chevrolet today introduced the 2017 Cruze Hatchback. Developed with all the technologies and dynamic driving attributes of the all-new 2016 Cruze sedan, the new hatch adds a functional and sporty choice for customers. It joins Colorado and Trax as the latest Chevrolets to push into new segments. PRODUCT DETAILS The Cruze Hatch has the same, class-leading 106.3-inch (2,700 mm) wheelbase as sedan models, but features a unique roof and rear-end structure – including wraparound taillamps and an integrated spoiler at the top of the liftgate. It opens to offer 18.5 cubic feet (524 liters) of cargo space behind the rear seat. With the rear seat folded, cargo space expands to 42 cubic feet (1,189 liters). ON SALE Fall 2016 QUOTABLE "With 9 percent market growth in small hatchbacks last year, it's the perfect time to bring the Cruze Hatch to America," said Alan Batey, president, General Motors North America and Global Chevrolet.