1993 Cadillac Deville Spring Edition 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

Cadillac scraps three-row CUV plans

Crossovers are one of the hottest automotive segments on the planet. Apparently, the idea of mixing the practicality of a station wagon with the looks of an SUV appeals to people whether they are in Cleveland or Shanghai because nearly every automaker is jumping into the market. So it was no surprise when early rumors suggested Cadillac was planning two, new CUVs to fit above and below the SRX. But things might have changed since then.
New rumblings indicate Caddy is taking a different route. Instead of two crossovers, only the compact is on the way, and the larger, three-row CUV on the Lambda platform to sit between the SRX and Escalade may be a goner. According to Ward's Auto, General Motors thinks that the other three-row, Lambda vehicles like the Buick Enclave and GMC Acadia compete too closely with the proposed Cadillac. The decision comes fairly close to the 2017 intended production date.
As far back as 2010, this Lambda-platform based CUV was considered highly likely for production. However, Cadillac Senior Vice President Bob Ferguson was somewhat cooler about it when he discussed the new crossover briefly last year. He said the model could use the Escalade name, despite its unibody chassis, but no decision had been made yet to actually produce it.

2015 Cadillac Escalade is exactly what you expect [w/video]

Leading up to the debut of the 2015 Cadillac Escalade, we were told that the new luxo-SUV would be "much less ostentatious" and that we could expect greater differentiation from its Chevy Tahoe/Suburban and GMC Yukon siblings. And while those things may be true to some extent, after digesting the full raft of Escalade information and photography, we can say that this new 2015 model is exactly what we were expecting all along.
No, there isn't a single part of the new Escalade package makes us go "wow" or "ooh," but it still looks like a solid, nicely updated offering that will surely attract the same sort of baller status when it hits the road. For starters, the new front end has been completely redesigned, where cleaner, tauter lines work with the full-LED headlamps and running lamps to create a face that, while familiar, falls right in line with the rest of Cadillac's lineup. Around the sides, the shape is exactly the same as the rest of the SUV's platform mates, with better-fitting body panels and a handsome, upright design. Of course, 20-inch wheels are standard, and hifalutin' 22-inch rollers are available (in chrome, we assume). Things get really interesting around back, where full-LED taillamps extend from the bumper all the way up to the top of the tailgate, and - like the Tahoe/Suburban/Yukon - the rear window wiper has been integrated into the top of the hatch for a cleaner look. It all looks pretty modern and good, but doesn't really tone down the otherwise flashiness of the Escalade package.
Like its predecessor, the new Escalade will be available in standard- and extended-wheelbase formats (bring on the EXT!). Only one engine is available: GM's 6.2-liter EcoTec3 V8, good for 420 horsepower and 460 pound-feet of torque, mated to a six-speed automatic transmission. Both two- and four-wheel drive configurations will be offered, and the new Escalade should be a bit better to drive than the previous model, with a new coil-over front suspension and five-link rear setup, a wider track, variable-assist electric power steering and Cadillac's Magnetic Ride Control system with Tour and Sport modes.