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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

Peter Max staring down $1M lawsuit over Corvette collection sale

Pop artist Peter Max recently sold off his collection of 36 vintage Chevrolet Corvettes – one each from 1953 to 1989 ­– for an undisclosed amount. The new owners have already announced plans to restore some of them and auction the models off sometime soon. Up until then, the sports cars had been languishing in various garages around New York City for decades and were caked in dust and grime. However, Max's end of the transaction has just become more complicated, because two men are suing the artist claiming he employed them to complete the deal first. The men allege that Max hired them to broker the sale of the 36 Corvettes in exchange for a 10-percent commission, according to the New York Post. They claim to have emails and text messages proving the existence of the deal, and are taking Max to court for $1 million over the squabble. The collection of Corvettes was amassed in 1989 as part of a prize package from the television network VH1, and Max bought the cars from the winner intending on using them for an art project. He never got around to it, though, and parked the sports cars around New York, until he finally sold them over the summer.

GM won't pay owners of recalled cars for lost value

Kenneth Feinberg, the man in charge of the General Motors compensation fund dealing with the its widespread ignition switch woes, has issued an informal, two-letter response to the plaintiffs in more than 70 lawsuits seeking redress for lost resale value of their Cobalts: "No." The cases were recently combined into one, but Feinberg told The Detroit News that the fund will deal "only with death and physical injury claims," and that "perceived diminished value" will get no consideration.
ALG, the firm specializing in establishing residual values, determined that Cobalt owners had lost $300 compared to the segment competition and doesn't envision any long-term effects from the recall situation. Feinberg's statement comes in advance of public details on how the compensation fund will work and adheres to GM's long-held position on the matter. The company has already asked a judge to throw out such suits using the pre-bankruptcy defense, even as it stopped using that defense in cases of injury and death.
With plenty of potential gain from the GM suit, however, don't expect the plaintiffs to give up yet. When Toyota was sued for the same reason during the unintended acceleration debacle, it eventually settled the case for between $1 billion and $1.4 billion just to get it over with. Since the 85 law firms involved in the Toyota litigation took home more than $250 million of that total, we shouldn't expect the attorneys to give up on a GM payout, either.