2002 Cadillac Deville Northstar V8 Florida Car Low Miles Best Color on 2040-cars

Auto blog

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's XT6 is not, for better or worse, a mini Escalade

In its latest attempt at reinvention, Cadillac has created a trio of admirable sedans — the ATS, CTS, and CT6 — cars that challenge or beat the competition on their own terms, and do so with audacious exterior styling rendered in a distinctly American idiom. But American customers have been ditching cars in favor of high-riding crossovers, and what Cadillac has not had up until recently is a suite of appropriately (or bizarrely) sized crossovers to offer potential consumers, something competitors have been deploying for years or even decades. And so the new, full-size(ish) three-row Cadillac XT6, unveiled officially last week at an event in Detroit, is intended to help address the premier domestic automotive luxury brand's current product shortcomings. "I guess we had so many priorities and had to decide what's the most important thing," says Andrew Smith, Cadillac's executive director of design. "We decided to approach this one from an interior perspective, to do things like provide ease of use for owners, upgrade the infotainment, and allow time for ourselves to learn lessons from the launch of XT4." The XT6 doesn't exactly break any new ground within the segment, but that's not necessarily a criticism. Though huge from a sales perspective, the two-box crossover category is not the industry's leader in beauty or innovation. Still, Caddy's most recent previous crossover, the size-Small XT4, managed to create handsome proportions and a premium appearance at first glance. The XT6 doesn't feel quite so ambitious or coherent, with a front end that is at once sneering and soft, a lengthy flank that feints at muscularity without delivering, and a rather abrupt tailgate that blends the rectilinear and the anodyne. Maybe consumers won't notice? "Our biggest challenge was giving the vehicle a character that works on this scale and platform," says Smith. "We want to make sure all of our cars feel different. We didn't want it to be a mini Escalade. No one wants a mini anything. But we wanted to give it Escalade presence, but in scale. So it's this combination of nice, and aggressive. I'm convinced we will sell more than we think we'll sell." Maybe he's right, and we definitely don't see this vehicle cannibalizing sales of the Escalade. People who want a bold Cadillac can still get that one, and will have a brand new option later this year, we expect, when a new Escalade is released.

Here is the Cadillac XT6 three-row SUV's interior

The Cadillac XT6 has once again been spotted by one of our spy photographers. Though the outside is still as buttoned-up as ever, our photographer managed to get close enough to see the completely uncovered interior. On the surface it looks more like the interior of the CT6 than the latest Cadillac model, the XT4, which is rather surprising. Specifically, the dashboard layout is nearly identical to the CT6's. It's a wide, sweeping dash, and the mid-section is dominated by a broad piece of trim that appears to be carbon fiber in this model. It likely can be replaced by wood, leather or a variety of other trims. The top part of the center stack is dominated by a large touchscreen with touch buttons surrounding it for driver's aids. Directly underneath are subdued air vents followed by the climate controls. These controls appear to have been lifted straight from the CT6 and feature touch buttons and a trio of toggle switches. The few places the dashboard deviates from the CT6 include how the XT6's fancy trim spans the full width of the dash, rather than giving way to some plain leather on the driver's side. This gives the whole dash a more upscale look. The dash also doesn't try to smash too many different materials and textures into one design. Overall, it all looks attractive enough, though we're a little disappointed to see a lack of physical buttons as we saw in the XT4. That being said, there are XT4-inspired elements in the XT6's interior. Most prominent is the scroll wheel down in the center console. We suspect the infotainment system will be effectively identical, so the wheel will similarly serve as a redundant means of controlling the infotainment system along with the touchscreen, voice commands and wheel controls. The shifter also seems to be the same as the XT4's. The XT6 exterior doesn't really reveal anything new. It still looks angular, and it still looks long enough to have a third row of seats. The introduction of this model will certainly give Cadillac a much more rounded lineup of crossovers from small to large, something the brand sorely needs. Related Video: