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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

Rumor: 2016 Chevy Volt gets 53 miles EV range, 40% increase

While we're still waiting for the official word from GM, news is creeping around the Internet that the 2016 Chevy Volt will get a big boost in all-electric range and gas-burning efficiency. According to new rumors out today, the second-gen Volt will be able to go 53 miles on a full charge, have 106 MPGe and be able to get 42 miles per gallon on the official EPA numbers. Compared to the outgoing first-gen Volt (38 miles EV range, 98 MPGe, and 37 mpg) these are all impressive increases. The all-electric range boost of almost 40 percent is the biggest surprise, though. We knew the new Volt would get better numbers than the first-gen model, but when GM debuted the car in Detroit earlier this year, it said it suspected the Volt would get a 50-mile range, 41 mpg and 102 MPGe. We'll be keeping an eye out for official confirmation of all these new numbers. Volt drivers are already making most of their driving miles electric. The number sits at about 80 percent currently, and GM has said it expects this to climb to 90 percent in the new model. GM said in May that the 2016 Volt will start at $33,995, a bit lower than the current Volt's MSRP of $34,170 before any tax breaks. So, for less money you'll be getting much better fuel economy. What's not to like about that? Preorders are already open for interested buyers in some parts of the country. Related Video: Featured Gallery 2016 Chevy Volt View 16 Photos News Source: GM Authority, Autoguide Green Chevrolet Fuel Efficiency mpg ev range

NACTOY announces top nine finalists for Car, Truck and Utility of the Year

Finalists for the 2024 North American Car, Truck and Utility Vehicle of the Year (NACTOY) Awards were announced at this year’s L.A. Auto Show. This whittles the field down to nine vehicles in total, with the winners scheduled to be announced on January 4, 2024. The finalists in their respective categories: Car category: Honda Accord, Hyundai Ioniq 6, Toyota Prius Truck category: Chevrolet Colorado, Chevrolet Silverado EV, Ford Super Duty Utility category: Genesis Electrified GV70, Kia EV9, Volvo EX30 These nine cars were chosen from a list of 25, which was previously narrowed down from a list of 52 eligible vehicles. Notable misses include the Chevrolet Corvette E-Ray, Toyota GR Corolla, GMC Canyon, Ford Ranger, Chevrolet Blazer EV, Chevrolet Equinox EV, Mazda CX-90 and Toyota Grand Highlander, among others. Jurors will now evaluate the final nine through the end of the year to determine the four winners. Autoblog Editor-in-Chief Greg Migliore is among the jurors. Green LA Auto Show Chevrolet Ford Genesis GM Honda Hyundai Kia Toyota Volvo Truck Crossover Hatchback SUV Electric Hybrid Luxury Off-Road Vehicles Performance Sedan