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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

Looking back on our favorite cars of Mad Men

The second half of the seventh and final season of Mad Men debuted this week, set to cap a run of public and critical acclaim. A decade's worth of interesting cars also made for good television, if you were paying attention. Vehicles didn't often steal the spotlight from Don, Betty, Roger, Joan and the gang, but they added meaningfully to the tone and beauty of the series. We sorted through the wheeled extras from Mad Men's archives, and choose some of our favorites to highlight. The list consists of cars that had at least a small impact on the plot of an episode, though certainly there are worthy gems hiding in just about every street and driving scene. Check out our subjective top five, and then let us know which of the Mad Men cars would be on your list. 1962 Cadillac Coupe DeVille – Season 2 Don Draper's Cadillac Coupe DeVille, all 500 feet of it, shows up in a few seasons of the show, but it's the first appearance that sets the tone. A Cadillac salesman, cut from the same cloth as Draper, asks what Don drives right now. "A Dodge," Don admits. "Those are wonderful if you want to get somewhere," allows the salesman, "this is for when you've already arrived." For a man on the move up corporate and social ladders that's a powerful message, and a pitch-perfect car. 1961 Lincoln Continental – Season 3 The most stylish Lincoln Continental ever is perfect set dressing for the mod show, of course. Though it's interesting that the car isn't cast as dapper Draper's ride, but rather his father-in-law's. Grandpa Gene does what all great grandfathers are bound to: lets his granddaughter Sally drive the big Lincoln while he works the pedals. Generational bond secured, in fine fashion. When you go back through the first three seasons of the show, you'll notice that Continentals show up more than once, too. There's nothing quite like them to evoke the best of the early '60s. 1963 John Deere 110 – Season 3 The only non-standard passenger vehicle on the list, no self-respecting gearhead/Mad Men fan should quibble with the inclusion of the John Deere 110 riding mower. For starters, the Deere is lovely to look at; a miniature version of the American Heartland icon in its green and yellow duds. The 110 appears as if milled from a solid block of steel, just the opposite of today's sleek, plasticky lawn minders (we're scouring Craigslist for one to bring home). The John Deere also has dear ramifications to the plot, too.

Best pickup trucks for 2023

In 2023, it seems like there’s a pickup truck for everyone. This wasnÂ’t always the case, as it wasnÂ’t until fairly recently that the midsize truck segment started becoming competitive again, and even more recently that weÂ’ve got choices for economical compact trucks or cleaner electric pickups. As the diversity of choices continues to grow, so does the potential customer base for vehicles with an open bed. Whether youÂ’re looking for something luxurious to drive in style, an absolute workhorse to tow the heaviest of loads, something small and practical, or a dune-blasting monster, youÂ’ve got options. Whatever it is you need it to do, here are what we think are the best pickup trucks for 2023. Before we start really categorizing these trucks, let's go over the scores our editors have given the best-selling pickup trucks in America. Best Full-Size Pickup Trucks for 2023: 2023 Ram 1500: 9.0 2023 Ford F-150: 8.5 2023 GMC Sierra: 8.0 2023 Chevrolet Silverado: 7.5 2023 Toyota Tundra: 7.0 2023 Nissan Titan: 5.5 Best Midsize Pickup Trucks for 2023: 2023 Ford Ranger: 8.0 2023 Honda Ridgeline: 8.0 2023 Jeep Gladiator: 8.0 2023 Nissan Frontier: 7.5 2023 Toyota Tacoma: 7.0 It's worth noting that the Chevrolet Colorado and GMC Canyon were redesigned for 2023, and we like them quite a bit. We haven't yet been able to pass them around to all of our editors in order to give them official rankings, but we're certain they'll come out at or near the top. Now, remember what we said at the outset about there being a pickup truck for every buyer? Let's break it down.   Best luxury truck: Ram 1500 Limited With an exceptionally comfortable interior with high-quality materials, excellent fit and finish, plenty of space, useful technology and a wealth of convenience features, this is the cabin in which weÂ’d want to spend the most time. We especially like touches like the ventilated reclining back seat, clever storage and 12-inch vertically oriented touchscreen. All the American trucks can be ultra-luxurious, though. What really seals the deal for Ram is its choice of either coil spring or air spring rear suspension that provide unmatched ride quality, no matter which you choose. The 1500 Limited will truly keep you feeling kingly on those long hauls. Read our review of the Ram 1500.   Best truck for cowboys: Ford F-150 King Ranch (Honorable mention: Ram 1500 Limited Longhorn) Need a truck to match those new cowboy boots and shiny belt buckle?