1968 Cadillac Deville Base Convertible 2-door 7.7l 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

Cadillac Elmiraj has production potential

There are many reasons to love the Cadillac Elmiraj Concept, but not the least of which is how production-ready this big coupe appears to be. Take out the overly fancy interior and a few conceptual elements of the exterior, and this looks like a coupe that could be in dealers now as the successor to the Eldorado.
On top of that, Automotive News is quoting Bob Ferguson, Cadillac senior vice president, as saying that a production version of this car is "very doable." AN adds that if the Monterey showstopper gets the green-light, this car would compete against the upcoming Mercedes-Benz S-Class Coupe and would based on Cadillac's upcoming rear-wheel-drive flagship sedan due out in 2015. The range-topping coupe would debut sometime after the sedan model. Cross your fingers.

Cadillac reveals more 2015 Escalade details, launches colorizer

Cadillac has opened up a mini-site to entice you into its all-new 2015 Escalade, and begun talking about more of its features and trim levels. While all versions of the new daddy Caddy will be powered by a 6.2-liter V8 with 420 horsepower and 460 pound-feet of torque routed through a six-speed automatic, there will be three trim packages you can wrap around that powertrain and seven exterior colors available to make it pop.
Features common to all trims include leather throughout, heated and cooled front seats, a 12-inch reconfigurable dash cluster, a quieter interior thanks to Bose active noise cancellation and the brand's love/hate CUE infotainment system. The base trim comes with adaptive remote start, hands-free tailgate, rear-view camera, park assist, Magnetic Ride Control and sits on 20-inch wheels. Moving up to the Luxury spec increases your stature with 22-inch wheels and adds a reconfigurable, color head-up display, a sunroof, power fold-and-tumble second row seating, Intellibeam headlights and a Driver Awareness Package with active crash-avoidance technology like Safety Alert Seat, lane departure warning and forward collision alert.
The top Premium trim gets a Driver Assist Package that includes Automatic Collision Preparation, automatic braking and adaptive cruise control, rear-seat entertainment, along with exterior touches like illuminated door handles.