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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

2016 Chevrolet Equinox gets styling tweaks, not much else

The current Chevy Equinox debuted over five years ago, in late 2009. Since then, the midsize crossover segment has become increasingly important, with brand-new entries meeting substantially overhauled versions of existing nameplates. But the Equinox carried on, largely unchanged. And while Chevy is using its Chicago Auto Show stage to debut the freshened, 2016 Equinox, it appears there isn't a whole lot to talk about. Take a look at the updated Equinox's exterior and you're pretty much going to see all that's new for 2016. Sure, the Chevy still boasts a handsome, inoffensive design, and it's now upgraded with things like LED running lamps on top-level trims, as well as new 17- and 18-inch wheel designs, projector beam headlamps, and revised taillamp styling. Moving inside, Chevy has added a standard seven-inch color touchscreen to all models, which includes a backup camera. New-to-Equinox safety features like side cross traffic alert and side blind zone alert are also available for 2016. And really, that's about it. Powertrain options carry over from last year. On the base end, there's a 2.4-liter inline-four that's good for up to 32 miles per gallon on the highway (with front-wheel drive). Buyers can also opt for a 301-horsepower, 3.6-liter V6 that allows the Equinox to tow up to 3,500 pounds. Will this be enough to keep the Equinox fresh in its highly competitive class? In 2014, the Equinox did outsell lower-volume competitors like the Mazda CX-5 and Subaru Forester, but was bested by fresher offerings like the Ford Escape, Honda CR-V, and Toyota RAV4. Have a look at all there is to know about the 2016 Equinox in the press blast below. We'll have live images and more impressions direct from the Chicago show floor, soon. Fresh Face: Chevrolet Introduces Restyled 2016 Equinox Premium cues, new safety features enhance Chevy's record-selling compact SUV CHICAGO – Chevrolet today introduced the 2016 Equinox – a contemporized version of the popular compact SUV. Updates include new styling with premium accents, new wheel designs and new available safety features, as well as a larger color touchscreen radio and a standard rear-vision camera for entry-level models.

Chevy to resume engine-building program for 2015 Corvette Z06

One of Chevrolet's most popular and unique customer features is set to return for 2015, as the company has announced that the Engine Build Experience is back. Interested owners will be able to screw together their engines beginning in March. The $5,000 option (which does not include the cost of travel) will give future owners of the 2015 Corvette Z06 the chance to screw together their car's actual 6.2-liter, supercharged V8. Available on each of the Z06's three trims, the Engine Build Experience includes a day at the Performance Build Center, instruction from an engine assembly tech, photographs of the experience and a personalized engine plaque. Once the build process is completed, the engine will (eventually) be fitted under the hood of the customer's personal Z06. "Chevrolet recognizes the passion customers have for Corvette and the Engine Build Experience offers them a truly unique opportunity for hands-on involvement in the creation of the heart of their new car," Corvette product manager Harlan Charles. "It's important for customers to understand their engine won't be installed the day after they built it. It will flow into the scheduling process for vehicle assembly, which depends on a number of logistical variables." Scroll down for the official announcement of the Z06's Engine Build Experience, available below. Exclusive Corvette Engine Build Experience Returns Program renewed for supercharged LT4 engine at new Bowling Green build center 2015-01-07 BOWLING GREEN, Ky. – Chevrolet announced today it is resuming the exclusive Engine Build Experience for Corvette Z06 customers – the only program of its kind for supercar customers. Starting in March 2015, Corvette Z06 customers will be able to assemble the 650-hp supercharged LT4 engine for their cars at the new Performance Build Center inside the Bowling Green Assembly Plant. "Chevrolet recognizes the passion customers have for Corvette and the Engine Build Experience offers them a truly unique opportunity for hands-on involvement in the creation of the heart of their new car," said Harlan Charles, Corvette product manager. "It's a chance to bond with their new car." The Engine Build Experience is selected with order code PBC and is offered on all Z06 trim levels.