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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

Michael Jordan's cars showcased in 'The Last Dance' documentary

After the masses begged and pleaded for an early release, ESPN finally unlocked the doors to the biggest production in company history last month. Episodes 1 and 2 of The Last Dance, a 10-part documentary special about Michael Jordan, the Chicago Bulls, and the 1997-1998 season, was released at last on April 19, 2020. Each week since, two new episodes have aired on Sunday nights, and the next two, episodes 7 and 8 are scheduled to drop this weekend on May 10. With unprecedented video access to MJ, who became averse to the media during his playing days, a byproduct from The Last Dance is a look at some of Jordan's cars. The Goat's taste ranges across a number of brands, but they all had one thing in common: performance as a top priority. Below, we have listed the rides that have already appeared in the series, and each week, we will update with new car cameos. Chevrolet Corvette C4 The photo above somewhat epitomizes one of the themes of The Last Dance. Everybody, whether that was men, women, children, franchise owners, reporters, coaches, teammates, or opponents, wanted a piece of Jordan. If that meant stopping in the middle of the road to get an autograph, then so be it. Around town, MJ was fairly easy to spot due to his flashy cars that occasionally wore Bulls red. Jordan has driven numerous Corvettes throughout the years, but the C4 is unique in that it was Chevy's top ride when Jordan signed an endorsement deal with the American company during his rookie year in 1984. Two famous photos, one in front of the Chicago skyline, show him standing next to a C4 with the license plate "Jump 23." This exact car, however, came later, as indicated by the squared-off taillights. He went on to star in a number of Chevrolet commercials with vehicles such as the Blazer and S-10 pickup truck. Chevrolet Corvette C5 The most notable Corvette His Airness ever owned was likely the C4 40th Anniversary ZR-1, but he also drove a C5 coupe at one point. Roughly nine minutes into the first episode, Jordan is seen driving the chrome-wheeled targa top into the parking lot at the Berto Center, the Bulls old practice facility.   Ferrari 550 Maranello Roughly three minutes into episode four, viewers get a glimpse of Jordan's exotic taste in the form of a red Ferrari 550 Maranello.

Recharge Wrap-up: Chevy Volt promos, Audi e-gas partnership

GM is offering promotions on the 2017 Chevrolet Volt. As dealers receive the first shipments of the new model year of the Volt, the automaker is giving customers in certain areas (California, Connecticut, Massachusetts, Maryland, Maine, New Hampshire, New Jersey, New York, Oregon, Rhode Island, and Vermont) $1,000 cash back on their purchase. GM Financial is also offering lease discounts for a limited time, and trade-ins may be eligible for even more money back. State and federal incentives could add up to make the new Volt quite the bargain for the right customer. Read more at Clean Technica. The UK's potential exit from the European Union could mean tighter emissions regulations, potentially even in the UK. While Britain has fought against the EU on stricter rules, the "Brexit" could leave officials in Brussels free to strengthen air quality laws. The UK, despite giving up its seat at the table, would still be beholden to some rules as a member of the European Economic Area free trade agreement. British voters vote on a referendum to leave the EU on June 23. Read more from Bloomberg Business. Daimler will refrain from investing in battery pack production with other automakers for the time being. Daimler CEO Dieter Zetsche cites an overabundance of battery production, saying, "Contrary to the expectation four or six years ago when everyone thought that the cells would be a rarity that could even be used as a tool of industrial policy, there is de facto a massive overcapacity in the market today and cells have become a commodity." Daimler recently shuttered its own lithium-ion battery production due to high costs and low demand. Read more from Automotive News. Audi is partnering with the Viessmann Group to increase e-gas production using a new biological process. Audi has been making the renewable fuel through a two-part process of electrolysis (splitting water into oxygen and hydrogen) and methanation (reacting hydrogen with CO2 to make synthetic methane). The new biological process uses microoganisms to absorb hydrogen and CO2 to make methane. The process requires lower temperature and pressure, and doesn't require high concentrations or purity of CO2. Read more in the press release below.