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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

Ghostbusters' new Ecto-1 is an oddly uninspiring '82 Caddy

The Ghostbusters, or at least the movie franchise, will emerge from Hollywood's cobwebs this summer, but instead of the iconic 1959 Cadillac known as Ecto-1 that delighted big screen audiences in 1984, the new model may leave some scratching their heads. That's because this latest Ghostbusters draws its vehicular inspiration from a decidedly less interesting period in American automobile production: the 1980s. Starring alongside Kristen Wiig, Melissa McCarthy, Kate McKinnon, and Leslie Jones is a 1982 Cadillac DeVille hearse. The studio dressed up this tired Caddy to look the part, but something's amiss. Instead of the flamboyant fins and shiny chrome, the '82 is decidedly pedestrian and uninteresting. Even in 1982, it was kind of a dull choice for luxury car buyers. There's a reason Murilee Martin deemed the '70s and '80s the "malaise era." Built a couple of years before the original, Academy Award-winning Ghostbusters hit cinemas, the '82 DeVille represents one of Cadillac's lowest points bar the Cimarron. Under its hood might be Cadilac's new-for-1982 HT 4100 V8 engine, which featured what the brand referred to as "digital" fuel injection. With 135 horsepower and 190 pound-feet of torque, the DeVille didn't win stoplight races back then. Oddly, the V6 engine that came standard in the '82 Sedan DeVille produced the same horsepower but delivered an extra 15 torques, which made it both faster and more fuel efficient than the V8. These were bad times for General Motors, clearly, but the gas engines paled in comparison to Cadillac's first diesel. The company's LF9 5.7-liter diesel V8 was optional on the DeVille and we pity the unlucky buyers who checked that box. Generally credited as the engine that made "diesel" a haunted word in Detroit for 30 years, the 350-cubic-inch unit might actually be fitting for the Ghostbusters. On the bright side, the '82 is new enough that it may have carried a box or two of Hi-C's stellar, Ghostbusters-inspired Ecto Cooler. Maybe the mortician took his kid to Kroger one time, you never know. Fitting in In the original 1984 Ghostbusters, the '59 Caddy was a forlorn and forgotten piece of machinery waiting for a new lease on life. Character Dr. Ray Stantz picks it up and admits in the film that it needs "some suspension work and shocks ...

Lyft and Ghostbusters want to take you for a ride in Ecto 1

Part of the fun of using a service like Lyft is that you never know exactly what kind of car will pick you up. And if you're in select cities this weekend, it could be the Ghostbusters' Ecto 1. Lyft is picking riders up in a 1982 Cadillac DeVille wagon decked out in the livery of everyone's favorite ghost catchers as part of a promotional tie-in with the new Ghostbusters movie. Just select Ghost Mode when ordering a car, and a decked-out Ecto 1 should appear. Customers can't ride with Slimer, but Lyft is packing each car with Hi-C Ecto Cooler – the relaunched juice drink that most older millennials lived on during their childhood – and Twinkies. If you're questioning the Twinkies, we strongly recommend you go back and watch the 1984 original. Egon will educate you. Riders in New York, Los Angeles, San Francisco, Boston, and Washington can order a free ride in Ecto 1 on Friday, July 1 or Saturday, July 2, between 10 a.m. and 6 p.m. Ghostbusters, starring Kristen Wiig, Melissa McCarthy, Leslie Jones, and Kate McKinnon, hits theaters on July 15. Related Video: News Source: Lyft via YouTube Celebrities TV/Movies Cadillac Wagon Luxury Special and Limited Editions Videos Lyft ecto 1 1982 cadillac deville