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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

Ringbrothers drops more hints about its wild SEMA creations

Ringbrothers isn't finished teasing its SEMA creations. First we got a sliver of rear quarter on a 1969 Chevrolet Camaro that revealed a bundle of carbon fiber and SEMA-obligatory deep-dish wheels. The Wisconsin tuner's now announced its litter of cars headed to the show and a few specs, along with two shadowy drawings. The Camaro, christened with the name Valkyrja and a two-tone paint job, gets stretched in two directions with severe fender flares to widen the body and an extended wheelbase. We're not sure what's happening with the Camaro's snout in the drawing, but under that bulging hood we'll find a 416-cubic-inch LS V8 from Wegner Motorsports. Wegner built the 416-cu-in supercharged LS3 V8 that powered Ringbrothers' 1,000-hp G-Code Camaro in 2016.  The second member of the gang is a 1969 Ford Mustang Mach 1 dubbed Unkl. The exterior begs for attention with a deep blue sea paint job, deep front chin spoiler, bulging hood, yellow brake calipers, and what looks like a racing number inside a roundel on the doors. Unkl gets its motivation from a 520-cu-in Boss V8 built by Kaase Racing Engines, rumored to throw about 800 hp.    Finally, Ringbrothers is bringing its Cadillac Madam V for another Las Vegas go-round after giving the custom coupe some updates. The Madam V is a 1948 Cadillac Series 62 fastback coupe body placed atop an ATS-V chassis, first shown in 2016. The firm didn't elaborate on the changes, so all we can expect for now are the coupe's postwar good looks mixed with new-millennium engineering, and a 3.6-liter twin-turbo V6 with 464 hp under that exceptionally long hood.    For any in attendance at the show, the Valkyrja Camaro debuts at the BASF booth on Tuesday, Nov. 5, 2019 at 9:30 a.m., the Unkl Mustang gets revealed a couple hours later at the Flowmaster/Holley booth, and the Madam V Cadillac will be on display throughout the show at the Ringbrothers booth.

2016 Chevy Corvette Z06 C7.R Edition brings track style to the road

The Chevrolet Corvette has a long history of excelling at endurance racing, and continues to dominate today. To celebrate that legacy, Chevy is bringing some of the look of its track machine to the road with the 2016 Corvette Z06 C7.R Edition. These machines might be gone faster than the racecar's lap time around Le Mans, because the company is building just 500 of them. All of these track-inspired, special editions are based on the 650-horsepower, supercharged Z06 in the top 3LZ trim, and they also come equipped with the Z07 Performance Package that includes carbon-ceramic brakes, adjustable aero elements, and Michelin Pilot Sport Cup 2 tires. Offered as a coupe or convertible, these 'Vettes use some tricks to match the style of the C7.R. They're available in the racer's traditional bright yellow livery, but black is optional. Unpainted carbon fiber trim (including material for the hood) and grilles that are painted Spectra Gray Metallic also add to the motorsport look. The car rides on a set of black wheels with Corvette Racing logos on the center caps. Inside, buyers of this limited edition are nestled in Competition Sport Seats that are upholstered in Jet Black leather. Suede microfiber accents with yellow stitching cover the steering wheel, gearshift, instrument panel and doors. Plus, there's some additional carbon fiber trim for good measure. Each car also comes with a cover with C7.R graphics. Chevy isn't disclosing the price for the Z06 C7.R Edition yet, but the limited edition model is slated to hit the market later this year. Related Video: CHEVROLET INTRODUCES 2016 CORVETTE Z06 C7.R EDITION 24/04/15 Track-to-street connection honored with limited production model BOWLING GREEN, Ky. – Chevrolet today introduced the 2016 Corvette Z06 C7.R Edition – a road-going, track-capable homage to the Corvette Racing C7.R racecars. It's offered in Corvette Racing's signature yellow livery – or black – with coordinated exterior and interior accents. Only 500 examples of the C7.R Edition will be built and all will include the Z07 Performance Package with carbon ceramic brakes, as well as a specially serialized vehicle identification number. They go on sale later this year. "Corvette Racing's legacy and technology were significant influences on the development of the Corvette Z06 and the new C7.R Edition honors the direct link between the racecar and the production model," said Harlan Charles, Corvette product and marketing manager.