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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

2020 Cadillac CT5 finally appears, hopes you think it's a Charger

This is our first look at what we expect to be the 2 020 Cadillac CT5 sport sedan, a one-to-rule-them-all replacement for the ATS, CTS and XTS. The name follows the scheme set by the CT6 and XT5. The first thing that jumps out about the CT5 is the big hood scoop. We sincerely doubt that scoop will make it to production, and when combined with the scalloped shapes on the car's flanks, we and the spy photographer feel they're probably there to dupe people into thinking it's a weird Dodge Charger. The disguise isn't working, but the scoop surprisingly looks pretty good. Maybe Cadillac should consider putting one on an inevitable V model. Moving past the fake bodywork, we can see that this CT5 takes inspiration from the Cadillac Escala concept. It has the long, almost fastback cabin and extra rear quarter window of that concept. The headlights are slim horizontal units, too, though they still sweep back a bit to bridge the gap between current models and the Escala. We also see that there's a decent amount of distance between the front axle and the base of the A-pillar, so we suspect that the sedan will retain rear-drive and optional all-wheel-drive drivetrains. We don't have any other cars in the image to compare it to, but considering the cars the Cadillac CT5 will replace, we expect it's roughly the size of a CTS, maybe even a touch smaller to satisfy those who want a 3 Series/A4/C-Class size luxury sedan. It will also probably use one or more of the existing powertrains in the Cadillac sedan fleet, which include a turbo 2.0-liter four-cylinder, naturally aspirated 3.6-liter V6, and a twin-turbocharged 3.0-liter V6. We'll also probably see the production model sometime in 2019 since that's when the CTS and ATS will go to the big garage in the sky. Related Video: Featured Gallery Cadillac CT5 spy shots Image Credit: Chris Doane Automotive Spy Photos Cadillac GM Luxury Sedan cadillac ct5

Cadillac ELR next EV to get Plugless Power wireless charging tech

Evatran has been testing its Plugless Power wireless charging systems for electric vehicles in the Chevy Volt and Nissan Leaf for years now and made the tech commercially available early this year. With the growth of the EV market, Evatran is getting ready to expand as well. The company announced today that it will add three premium EVs to the Plugless Power system by the end of the year, with the first (and so far only) named model being the Cadillac ELR. We expect it was not difficult for Evatran to adapt the Plugless Power system to the ELR, since the vehicle's powertrain is so similar to the one in the Volt. The main problem we see is that Cadillac has only sold 390 ELRs (as of the end of June), so this first Plugless Power expansion isn't exactly going to ignite sales, even if every ELR owner opts for the cool tech. If one of the next two announcement is for the Tesla Model S, though, then you're talking numbers. Speaking of the future, what models do you think will be next? The Plugless Power L2 wireless systems were recently declared safe by the Intertek and start at $2,470, not including installation or government incentives. All the online/smartphone connectivity features that work with the car when it's got a cord stuck in it work with the L2 system, Evatran says. Orders start today, and the ELR package will be available September 1. There's more, including a local news report on the technology, below. WSLS 10 NBC in Roanoke/Lynchburg Va Wireless Vehicle Charging available to Cadillac ELR owners starting September 1st The Cadillac ELR Joins the Growing List of Compatible Electric Vehicle ("EV") Models from Evatran, the World Leader in High-Power Wireless Charging RICHMOND, VA July 28, 2014 – In an exciting statement today, Evatran Group, Inc. ("Evatran"), announced that its PLUGLESS wireless charging technology would soon be available on the Cadillac ELR. Evatran, the first Company in the world to make wireless charging available to individual EV drivers, currently has systems that are compatible with the Nissan LEAF and Chevrolet Volt. The Cadillac ELR is the first model to be announced in what is intended to be three new premium model announcements by the end of 2014. Evatran will begin accepting advanced orders today for deliveries as soon as September 1st. "The launch of the Cadillac ELR system is an important milestone for us," commented Rebecca Hough, Evatran CEO and Co-Founder.