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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

Chevrolet Chaparral 2X Vision Gran Turismo could only work in a video game [w/video]

There's something wondrous about the Vision Gran Turismo series of concepts that has let companies go wild with completely imaginary concepts for Gran Turismo. For Chevrolet's crack at the idea, it has taken a page out of its performance past with the Chaparral Can-Am racers of the '60s and '70s, with its designers having reinterpreted that period look for the future of motorsports as the Chaparral 2X. In real life, the 2X looks even better than in earlier photos. The design takes inspiration from someone in a flying suit with head down and arms outstretched, an influence you can really see that in the vehicle's shape. The driver lies facedown inside with the instruments projected onto a visor. Unfortunately, the powertrain here is a complete flight of fancy and works purely in the video game world. It imagines a laser propelled by lithium-ion batteries and an air-powered generation to make 900 horsepower. The 2X has a theoretical top speed of 240 miles per hour and hits 60 mph in a lightning-quick 1.5 seconds. Scroll down to see the concept on video with Chevrolet designers describing their inspiration and read the company's full announcement. It's also downloadable in Gran Turismo 6. Chevrolet to Show Chaparral Vision Gran Turismo Concept Boundary-pushing, Chevy-powered race cars changed motorsports design DETROIT – When racers Jim Hall and Hap Sharp founded Chaparral Cars in 1962, few could have guessed how they would shake up the conformities of the racing world – and fundamentally change it. Through pioneering applications of aerodynamics and aerospace technology, and a partnership with Chevrolet Research and Development, Chaparral Cars advanced the science of racing cars. It also triumphed on the track over well-established sports car companies from around the world, using Chevrolet horsepower. It was that spirit of innovation that inspired the Chevrolet Chaparral 2X VGT concept race car developed for the Vision Gran Turismo project, which celebrates the 15th anniversary of PlayStation® racing game Gran Turismo by inviting manufacturers to give fans a glimpse into the future of automotive design. It will debut at the Los Angeles Auto Show, Nov. 19, and gamers will be able race the Chaparral 2X VGT following the release of an online update for Gran Turismo 6 during the holiday season.

12 new cars that will never go out of style

Some cars never go out of style. It’s rare, but it happens. They get old. They get depreciated. But they never stop looking cool.  Some might call them modern or instant classics. Within a few years theyÂ’re no longer the latest and greatest, no longer the flavor of the month, but they remain special. Eternally special. Timeless.  These cars arenÂ’t necessarily going to be worth a fortune someday. However, some may not depreciate as rapidly or as far as other models. But thatÂ’s not what weÂ’re talking about here. These are the cars that enthusiasts will always find desirable from the curbside. TheyÂ’re the cars you end up shopping on eBay late at night 10 years later because you canÂ’t get them out of your head. TheyÂ’re the cars that will forever excite you when you spot a clean one in traffic or in a parking lot.  There are plenty of recent examples over the past couple of decades that could count as instant design classics. But then we got to thinking, what 2021 models will be forever cool to stare at? Which new cars and trucks on sale today will we be shopping on eBay late at night in the 2030s? We kept supercars and other ultra-expensive cars off the list to keep things within the realm of attainability, and ended up with 12 total cars. Lexus LC WeÂ’re not applying a numerical ranking to any of the cars on this list, but if we were, the Lexus LC would be No. 1. There isnÂ’t another car design out there that can stir our emotions the way an LC can when itÂ’s just standing still. This car is a concept design come true in the most beautiful of ways, and itÂ’s a shoo-in winner for Concours events decades into the future. All of this heaping praise, and we havenÂ’t even gotten to the LC 500Â’s intoxicating 5.0-liter V8. It doesnÂ’t win drag races. It wonÂ’t be the fastest around the track against any similarly-priced competition. But none of that matters. ItÂ’s quite possibly the best car you can buy new, and that says it all when it comes to the LC. Chevrolet Corvette It might not be the stunner that the Lexus LC is, but the new C8 Corvette is and will always be a special vehicle. ItÂ’s the first mid-engine Corvette, which instantly cements it into an automotive hall of fame section of sorts. All of the performance stats and specs are there to back up its supercar-like looks, and it remains the best performance bargain on sale today.