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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

Can DARPA hack into a Chevy Impala through OnStar?

An ex-video game wizard named Dan Kaufman tracked a circuitous route to becoming the head of the Software Innovation Division at the Defense Advanced Research Projects Agency. DARPA normally makes these pages because of its work with autonomous vehicles and automobile technology that overlaps with military applications, but for the past five years Kaufman and his multiple research teams have been working on creating unhackable software code that could be used in military drones. Part of that work has involved hacking into just about everything else, and as a segment on 60 Minutes reveals, that includes cars. The masterminds discovered a way to hack into OnStar, the General Motors telematics system. After figuring out how to hook into OnStar's emergency communication system, they overwhelmed it with data. While the computer was busy trying to manage the overrun of data, the research team inserted code that took control of the sedan's other computers, giving it control. So while reporter Leslie Stahl tooled around in a parking lot, a DARPA researcher with a laptop would occasionally take control of the car, like by applying its brakes or, conversely, removing the ability for Stahl to use the brakes. Hacking into vehicles has been in the news for years: Car and Driver ran a feature on the various ways cars could be hacked in 2011, two hackers released a car-hacking code at the hacker-fest Defcon in 2013 and demonstrated how it worked on a Toyota Prius and Ford Escape, and German researchers demonstrated how they could hack into BMW's Connected Drive remote-services system last week via an attack on the cars' telematics units. This isn't about GM or Onstar or the future; hacking into cars of all kinds isn't coming, it's here, and it doesn't take the half-billion-dollar annual budget of a small DARPA division to do it. Check out the 60 Minutes video on the CBS site (you can watch the entire video from a mobile device without logging in). The OnStar hacking starts at 6:45, but it's worth watching what leads up to that. News Source: Jalopnik Chevrolet Safety Technology Infotainment Autonomous Vehicles Videos Sedan hacking 60 minutes

Chevy already offering discounts on 2016 Volt

The second-generation Chevrolet Volt has a longer range than the first-generation version, but General Motors doesn't appear to want to take any chances of the extended-range plug-in not being well-received. The US automaker is already offering some cash incentives to make sure the 2016 Volt moves briskly. In fact, GM is offering incentives worth up to $1,000 through November 2 in some states, Green Car Reports says, citing CarsDirect. Most of the country won't get the second-generation Volt until next year, so GM is looking to keep all potential buyers satisfied. That means perks for folks in California, Connecticut, Massachusetts, Maryland, Maine, New Jersey, New York, Oregon, Rhode Island and Vermont - the states where the new 2016 Volt will go on sale first. Buyers can pick up another $500 in incentives by luring a non GM-vehicle owner into buying a new Volt. And then, of course, there's the $7,500 federal-government perk, in addition to any goodies your particular state will throw in via tax breaks. For everyone else, GM is offering as much as $2,500 off the 2015 model year Volt. The 2016 Volt has an MSRP of $33,995, which is actually slightly less than the $34,170 sticker price on the 2015 model. The new version has a 53-mile all-electric range, 15 miles longer than the first-generation Volt. With a lower price and more electric miles, GM hopes to reverse falling Volt sales. Through September, GM sold 9,264 Volts, down 36 percent from a year earlier. You can read our First Drive impressions of the 2016 Volt here. Related Videos: Featured Gallery 2016 Chevrolet Volt: First Drive View 24 Photos News Source: Green Car Reports Green Chevrolet GM Hybrid incentives volt