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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

The Chevy Cruze Hatchback arrives in the US this fall

We knew this was coming, but now it's official. Chevrolet will sell a five-door Cruze in the US beginning in late 2016, and here it is, ahead of its debut at the 2016 Detroit Auto Show. Previously, the Cruze Hatchback was available in other markets, and the decision to not offer it Stateside was apparently "a pre-bankruptcy planning mistake," according to GM's Mark Reuss in earlier reports. The 2017 Cruze Hatchback builds on the second-generation Cruze we saw last summer, adding a wealth of functionality – there's 42 cubic feet of cargo space available with the rear seats folded. Plus, the Cruze sedan is lighter and stiffer than its predecessor – more than 200 pounds have been shaved off the compact car's curb weight. While the Cruze sedan is available in four trims – L, LS, LT, and Premier – the five-door will only be available in LT and Premier guise, but can be had with the optional RS appearance package. All Cruze models are powered by a 1.4-liter turbocharged inline-four engine, with 153 horsepower and 177 pound-feet of torque. Standard amenities include Apple CarPlay and Android Auto via Chevy's MyLink infotainment system, as well as a raft of high-tech safety features. Pricing information isn't available as of this writing, though we expect the Cruze Hatchback to command a slightly higher premium than the sedan. For comparison, a new Cruze LT sedan starts at $21,995, with the Premier coming in at $23,995. We'll have official numbers closer to the Hatchback's on-sale date this fall. 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).

2016 Chevy Camaro teased as current-gen car prepares to hit 500k sales

Just as Chevrolet prepares to launch the sixth-generation Camaro, the current, fifth-generation car is about to hit a major milestone: 500,000 units sold in the United States. That's impressive, and to celebrate, Chevy has released this video, showing the Camaro Z/28 doing what it does best around a race track. But that's not all there is to see in this video. At the end, Chevy gives us a glimpse at the sixth-generation Camaro, expected to debut in the not-too-distant future. Have a look, and check out Chevy's press blast, below, for more details about the 500k sales mark. Related Video: Fifth-gen Camaro Approaches 500,000 U.S. Sales Production milestone caps five years as America's best-selling performance car DETROIT – Talk about a big family: Chevrolet expects to deliver the 500,000th fifth-generation Camaro in the United States this month. The fifth-generation Camaro has been a runaway success for Chevrolet since it went on sale in August 2009. Camaro sales passed Mustang in 2010, to become America's best-selling performance car – a title Camaro has retained for five consecutive years. In the process, the Camaro has helped bring new buyers to Chevrolet – with 63 percent of retail buyers new to GM. "The fifth-generation Camaro has clearly resonated with both long-time Camaro fans, and first time performance-car buyers," said Todd Christensen, Camaro marketing manager. "That sets the bar high for the next chapter of the car's history." Remarkably, the Camaro continues to gain momentum, even as the fifth-generation Camaro nears the end of production this year. In 2014, Camaro total sales increased 7.1 percent for its second-best year of sales since its introduction.