2003 Chevrolet S10 Xtreme Standard Cab Pickup 2-door 4.3l on 2040-cars

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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 Green Truck of the Year, Commercial Green Car of the Year finalists

Not only are commercial-grade haulers getting more green love lately, they're getting more different kinds of green love. The 2016 Green Truck of the Year, the second time the award has been handed out, is being decided by judges from Green Car Journal and the San Antonio Auto & Truck Show. This year the award is joined by the new 2016 Commercial Green Car of the Year, which crowns one of the little vans increasingly used by small business as cargo and delivery vehicles. The Green Truck of the Year finalists are the Chevrolet Colorado Duramax (pictured), Ford F-150, GMC Canyon Duramax, Nissan Titan XD, and Toyota Tacoma. The first three of those were on last year's list, but since they are completely new or upgraded for 2016 - Ford with its all-aluminum body, the General Motors twins with the new diesel Duramax engine - they qualify for entry again. The Ram 1500 EcoDiesel won last year. The Commercial Green Car finalists are the Chevrolet City Express, Ford Transit Connect, Mercedes-Benz Metris, Nissan NV200, and Ram ProMaster City. You can read more details in the presser below, and the awards will be announced in San Antonio sometime during the show from November 19-22. San Antonio Auto & Truck Show Announces 2016 Green Truck of the Year and Commercial Green Car of the Year Finalists SAN ANTONIO, Oct. 22, 2015 /PRNewswire/ -- Green Car Journal and the San Antonio Auto & Truck Show have announced finalists for the 2016 Green Truck of the Year™ and 2016 Commercial Green Car of the Year™ awards. The Green Truck of the Year™ nominees are the Chevrolet Colorado Duramax, Ford F-150, GMC Canyon Duramax, Nissan Titan XD, and Toyota Tacoma. Vying for the all-new 2016 Commercial Green Car of the Year™ award are the Chevrolet City Express, Ford Transit Connect, Mercedes-Benz Metris, Nissan NV200, and Ram ProMaster City. "Over the past few decades, new car models have benefitted from design and technology improvements that have brought higher fuel efficiency and greater levels of environmental compatibility," said Green Car Journal and CarsOfChange.com Editor and Publisher Ron Cogan. "With models like these ten deserving finalists, we're witnessing the pickup and light commercial vehicle field enjoying the same attention." The new Commercial Green Car of the Year™ award is part of an expanded awards program presented at this year's 2015 San Antonio Auto & Truck Show.

Valet mode captures joyride in red Corvette

A man in California is among the first to catch a valet behaving badly in his 2015 Corvette using a controversial built-in recording feature. Dan Cowles told KTLA 5 when he bought his dream car, a 2015 Chevrolet Corvette Stingray, he opted for the Performance Data Recorder. The Corvette PDR uses a high-definition camera mounted in the windshield header, a microphone in the cabin and a GPS receiver that record and track the sports car's movements and sounds. They work together to produce a video with telemetry overlay, so you can see acceleration rates, lap times and g-forces. The system can be customized to show extensive performance data, or simply video of your drive like a traditional dash cam. It also comes with Valet Mode, which locks the glove box, disables entertainment and records video. The audio recording feature ran afoul of several state's recording consent laws, but this video has no audio, indicating the fix may have been as easy as turning off the microphone. Cowles dropped off his hot red 'Vette with the valets at the Segerstrom Center for the Performing Arts in Costa Mesa, CA. When he got his car back he checked the PDR and discovered footage of the valet taking a short, but intense, joyride in the garage. In the video, the valet finds a straightaway in a tiered parking garage and pushes the car to 50 miles per hour in five seconds before quickly stopping. He then parks the car without incident. The valet then gets out of the car and takes one more admiring look at the front. The valet company has yet to commented on the video, according to Fox News, but valets everywhere should be on notice; that little red Corvette you have your eye on may have its eyes on you. Related Gallery Ward's 10 Best Engines of 2015 View 10 Photos Chevrolet Driving Classics valet parking