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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 Cadillac CTS-V to hit dealers this summer, start at $83,995*

Cadillac has announced pricing for the 640-horsepower CTS-V, and not only will the new super-sedan outgun its heartiest German rivals, it'll undercut them on price, too. Kicking off at $83,995 (not including a $995 destination charge), the CTS-V is nearly $10,000 less than the 560-hp BMW M5, almost $18,000 less than the 577-hp Mercedes-Benz E63 AMG S 4Matic, and is nearly $25,000 less than the 560-hp Audi RS7. So in case you were wondering, yes, the CTS-V will continue to be one of the auto industry's very best high-performance bargains in its third generation. "V-Series represents the pinnacle of Cadillac, a brand that now makes drivers' cars at the highest level," Cadillac's head honcho Johan de Nysschen said in a statement. "The new CTS-V is essentially two cars in one: a luxury sedan with sophisticated road manners and a track-capable sports car with awe-inspiring performance. This type of car is exclusive, the domain of the few who can access this level of incredible capability. V-Series matches or overtakes the finest cars in this elite class, while being more accessible." As for when you can get your hands on bargain-priced beast, dealers are now accepting orders, with deliveries slated to begin late this summer. Scroll on down for the official release from Cadillac. Next-Generation 640-hp Cadillac CTS-V Launches This Summer U.S. DEALERS BEGIN ACCEPTING ORDERS NOW FOR CADILLAC'S UPCOMING PERFORMANCE ICON DETROIT – Cadillac announced today that U.S. dealers will begin accepting orders for the next-generation 2016 CTS-V, the all-new high-performance sedan that launches in late summer. The 640-hp CTS-V is the second of two all-new V-Series models to come to market in 2015, following the smaller ATS-V coupe and sedan, which launches in late spring. Cadillac's new 2016 V-Series models represent a significant expansion of the brand's elite, high-performance line. Not only are the new V-Series cars elevated in terms of performance, they now reach a broader spectrum of drivers by presenting two distinct personalities, size categories and price points. With a top speed of 200 mph and 0-60 performance in 3.7 seconds, the CTS-V is the most powerful car in Cadillac's 112-year history. The 2016 CTS-V is priced from $83,995. Customers can place orders now with dealers and view additional product information at Cadillac.com. The CTS-V elevates into the elite group of the world's highest-performing sedans.

Cadillac exec realizes ELR pricing was stupid high

At least one Cadillac exec has finally started to come to terms with something we knew all along: the initial $75,000 price for the ELR plug-in hybrid was way too high. The bad decision in part led to the model selling just over 1,000 units last year. Company marketing boss Uwe Ellinghaus recently gave an interview to Bloomberg where he discussed what went wrong. "The MSRP was, indeed, a mouthful," Ellinghaus said to Bloomberg. "We overestimated that customers would realize our competitors were naked at that price." People balked at the ELR's price from the very start, and dealers were receiving $5,000 at one point just for getting customers to test drive the PHEV. Later, some incentives for buyers were as high as $14,000. Cadillac planners saw a conundrum when it came to the ELR's price. Too low of a figure was thought to bring the model close to the Chevrolet Volt, and $75,000 was also believed to signal Caddy's PHEV as something special. "We just wanted to make this a statement for the brand of how progressive we are," Ellinghaus said to Bloomberg. Cadillac is now working to rehabilitate the ELR's reputation with a host of updates for 2016. Buyers get a 25-percent boost in powertrain output, additional standard features, and the whole package comes with a $9,000 drop in price. The tweaks should help the luxurious PHEV make a better second impression. Related Video: