1995 Cadillac Deville Base Sedan 4-door 4.9l on 2040-cars

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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

2014 Cadillac CTS images leak out yet again

It seems the 2014 Cadillac CTS just doesn't want to stay under wraps. For the second time in as many days, Caddy's next sedan is showing a bit more sheetmetal than the automaker would like before it is officially debuted tomorrow at the New York Auto Show.
This time, the leak comes from USA Today, and we've gone ahead and added them to our gallery of 2014 CTS images. As you may know, Cadillac will bestow the next CTS with an all-new twin-turbo V6 engine that will offer up an impressive 420 horsepower and 430 pound-feet of torque.
USA Today also mentions a new Vsport model but doesn't give any more details other than the fact that it will boast the twin-turbo engine and an eight-speed automatic transmission. Of course, all you have to do is come back to these pages for the official unveiling tomorrow afternoon for all the sordid details. In the meantime, check out the images above.

2016 Cadillac CT6 shows crisp sense of style in leaked images

You're looking at the 2016 Cadillac CT6, aided by the almost inevitable internet-aided leak, ahead of its debut at the New York Auto Show this week. As you can see, the overall shape is straight-edged and aggressive, and overall in keeping with what we've seen from Cadillac over the last several years. High-tech lighting clusters extend from the fender peaks all the way down in what appear to be LED strips toward the lower fascia and its rectangular fog lights. A suitably massive grille encrusted in chrome boasts one of the larger Wreath and Crest badges we've ever witnessed on a car. Under that sharply creased hood will sit a twin-turbo 3.0-liter V6 engine with 400 horsepower at its disposal, according to Cadillac, mated to an eight-speed automatic transmission. A naturally aspirated 3.6-liter V6 will also be available, we're told. We may wish for an edgier range-topping sedan from Cadillac, but it's not really fair to draw any real conclusions from just one leaked image. In other words, stay tuned, 'cause the rest of the story won't be far behind.