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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

2016 Chevy Camaro Convertible gets cleaner looks, improved refinement [UPDATE]

UPDATE: We have live photos from the reveal. Scroll to the bottom of the story and check them out in the Related Gallery. Back in May, Chevrolet introduced a redesigned Camaro. Now, and not at all surprisingly, the Bowtie brand is showing off the latest Camaro convertible, based on the coupe that debuted on Belle Isle in Detroit. From the beltline down, this is the same car that was so well-received last month. But above the waist, there's an all-new, fully automatic canvas roof that can be raised and lowered at speeds up to 30 miles per hour. On top of that, owners will be able to drop the roof remotely by simply pressing a button on the key. Chevy does not, however, say if this new convertible roof is lighter than last year's top. The biggest change for the Camaro convertible, though, is something we've long yearned for – a proper hard tonneau cover that deploys over the folded roof. The current muscle car's roof fabric has the unpleasant tendency to flap in the breeze. The new droptop shouldn't have that problem, and will likely boast an even cleaner top-down profile to boot. Like the hardtop, though, the Camaro convertible does benefit from the same lightweight structure, that helps trim "at least" 200 pounds of body fat. It should also make use of the same powertrain lineup, with a turbocharged four-cylinder, a 3.6-liter V6, and a 6.2-liter V8 with six-speed manuals or eight-speed automatic transmissions spanning the lineup. "From the beginning, the Camaro's architecture was developed to incorporate a convertible with uncompromised driving dynamics," Camaro chief engineer Al Oppenheiser said in the attached release. "Customers will appreciate what they don't feel: quivers, cowl shake or an under-damped chassis typically found in a four-seat convertible." Increased refinement, a cleaner look, better driving dynamics and a more usable convertible roof? We're looking forward to you 2016 Camaro convertible. Chevy claims the new car arrives in "early 2016," which means we should plan on seeing this droptop at the typically cold and snowy Detroit Auto Show. Until then, check out the full press release from Chevrolet. Related Video: Chevrolet Lifts Lid on 2016 Camaro Convertible Segment's most advanced top is fully automatic, with refined appearance DETROIT – Let the sun shine in. Chevrolet will offer a convertible model of the all-new 2016 Camaro, featuring the segment's most-advanced top.

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.