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Mercedes-Benz engines with 48-volt systems coming in 2017

As part of a big green push announced yesterday, Mercedes-Benz is jumping into the world of 48-volt power. The company will launch a new family of efficient gasoline engines next year and will begin rolling out 48-volt systems with it, likely in its more expensive cars first. Mercedes will use the 48-volt systems to power mild-hybrid functions like energy recuperation (commonly called brake regeneration), engine stop-start, electric boost, and even moving a car from a stop on electric power alone. These features will be enabled through either an integrated starter-generator (Mercedes abbreviates it ISG) or a belt-driven generator (RSG). (RSG is from the German word for belt-driven generator, Riemenstartergeneratoren. That's your language lesson for the day.) Mercedes didn't offer many other details on the new family of engines. There are 48-volt systems already in production; Audi's three-compressor SQ7 engine uses an electric supercharger run by a 48-volt system, and there's a new SQ5 diesel on the horizon that will use a similar setup with the medium-voltage system. Electric superchargers require a lot of juice, which can be fed by either a supercapacitor or batteries in a 48-volt system. Why 48-volt Matters: Current hybrid and battery-electric vehicles make use of very high voltages in their batteries, motors, and the wiring that connects them, usually around 200 to 600 volts. The high voltage gives them enough power to move a big vehicle, but it also creates safety issues. The way to mitigate those safety issues is with added equipment, and that increases both cost and weight. You can see where this is going. By switching to a 48-volt system, the high-voltage issues go away and the electrical architecture benefits from four times the voltage of a normal vehicle system and uses the same current, providing four times the power. The electrical architecture will cost more than a 12-volt system but less than the complex and more dangerous systems in current electrified vehicles. The added cost makes sense now because automakers are running out of ways to wisely spend money for efficiency gains. Cars can retain a cheaper 12-volt battery for lower-power accessories and run the high-draw systems on the 48-volt circuit. The industry is moving toward 48-volt power, with the SAE working on a standard for the systems and Delphi claiming a 10-percent increase in fuel economy for cars that make the switch.

Fast sedans and loose Tweets | Autoblog Podcast #555

On this week's Autoblog Podcast, Editor-in-Chief Greg Migliore is joined by Associate Editor Reese Counts. Reese has been traveling a lot, and the two discuss his recent first drives of the 2019 Mercedes-AMG GT four-door and the 2019 Audi Q3. The pair also talk about the 2018 BMW X2 that's been in the office this week. Also on the agenda is the SEC's lawsuit against Elon Musk, Ola Kaellenius replacing Dieter Zetsche at Mercedes-Benz, Cadillac's move back to Detroit and the upcoming reveal of the 2019 BMW 3 Series at the Paris Motor Show.Autoblog Podcast #555 Get The Podcast iTunes – Subscribe to the Autoblog Podcast in iTunes RSS – Add the Autoblog Podcast feed to your RSS aggregator MP3 – Download the MP3 directly Rundown 2019 Mercedes-AMG GT four-door 2019 Audi Q3 2018 BMW X2 Elon Musk lawsuit New Mercedes-Benz CEO Cadillac is heading back to Detroit The new 3 Series debuts next week Feedback Email – Podcast@Autoblog.com Review the show on iTunes

Super Bowl commercials: Steven Tyler, Emerson Fittipaldi, Keanu Reeves and more

Sunday is Super Bowl LII, which means America will immerse itself in high-calorie potluck fare, garish halftime-show entertainment (Justin Timberlake, bringing sexy back, but not that kind), the most expensive and over-the-top TV ads of the year, and — oh yeah — a football game between two teams connected by Amtrak's Northeast Corridor line. What else you gonna do on the first Sunday of February? As usual, automakers plan big, splashy TV spots to reach all those gajillions of eyeballs glued to the teevee, though the list may be shorter than in previous years. Here's a roundup of what we know is coming. Hyundai Hyundai will test the football/futbol divide with a 60-second spot starring a youth-soccer ref who arrives for the game dramatically and just in time in his 2018 Kona. Only it's Super Bowl Sunday, so he — along with the two coaches, and apparently most of the parents — are eager to get on with their game-day plans. Advantage: football, being the message, we guess. The ad does make a quick plug for Hyundai's BlueLink nav system, but this is only nominally about the car. This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings. Hyundai also plans a 60-second ad that recognizes people fighting pediatric cancers and highlights its own nonprofit organization that focuses on the cause, according to Reuters. Kia This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings. The Korean automaker will put Aerosmith frontman Steven Tyler behind the wheel of its new Stinger on an abandoned racetrack. The former " American Idol" host promptly puts it into reverse, going back to his '70s heyday, courtesy of some CGI, to the strains of "Dream On" played backwards. Trotting out an almost-70-year-old to relive some classic rock glory fits the Super Bowl template to a T. Two-time Formula One and Indianapolis 500 champ Emerson Fittipaldi also makes a cameo. It airs in the third quarter. Lexus This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings. Lexus teams with Marvel Studios to preview its forthcoming movie "Black Panther," which arrives in theaters Feb. 16. In "Long Live The King," the Black Panther, a.k.a. King T'Challa, played by Chadwick Boseman, dispatches some bad guys to recover stolen Vibranium after clinging to the roof of a speeding 2018 LS 500 F Sport, driven by co-star Danai Gurira.