1968 Cadillac Deville Base Hardtop 4-door 7.7l on 2040-cars

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Cadillac CT6 styling will be evolutionary, not like Elmiraj

Well, this is at least a little disappointing. It turns out Cadillac's long-awaited flagship, the CT6, won't be ushering in a wholesale change in the company's design. That's coming from GM Design guru Ed Welburn, meaning it should be taken as gospel (unless of course he's just trying to hoodwink us). "It'll be different and it will certainly stand out in the portfolio," Welburn told Automotive News. "But you won't see a real shift in direction." Instead, Art and Science will be shown in yet another new form, and will "continue to evolve," according to Welburn, although what that means is unclear. What we can say for certain, though, is that Art and Science on the CT6 will not evolve into the stunning Elmiraj Concept. "I think Elmiraj was more of an influence on some other things we're working on for Cadillac," Welburn said, we're guessing with a smirk and an air of mystery. Considering we have yet to see the CT6, it's hard to tell whether this will be good news or bad, although based on the critical reception to the Elmiraj, we're a little bit disappointed by Welburn's statements. Still, only time will tell whether the styling of the CT6 will really work out.

Cadillac boss: We will have diesels

Johan de Nysschen doesn't usually mince words about his plans, and the Cadillac boss says that diesel-fueled models are on the horizon for the luxury brand in the US by the early 2020s. The four- and six-cylinder engines under development would launch first in Europe about 2019. "We will definitely bring them to the US," de Nysschen said during a press event, according to Automotive News. Unfortunately, the Cadillac president isn't saying which models would get the diesels, yet. This plan has been in the works for at least several months, and Cadillac made mention of the two oil-burners earlier this year during the unveiling of its new V6 engine. De Nysschen broached the possibility during an interview at the 2015 Detroit Auto Show, and he also referred to the inclusion of hybrids and plug-ins into the company's lineup at that time. Last year, a rumor suggested the addition of a V6 turbodiesel into the Escalade range. There were also rumblings of an oil-burning ATS during that model's launch. While Cadillac is no stranger to offering diesels in Europe, the decision to develop these new ones could come at an inopportune time. Governments there are rapidly moving against the fuel in favor of electrification. Tighter emissions regulations could also be on the way for the EU. Related Video:

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