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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.

Subaru ice driving and Mercedes-AMG G 63 | Autoblog Podcast #571

In this week's Autoblog Podcast, Editor-in-Chief Greg Migliore is joined by Green Editor John Beltz Snyder. They kick things off by talking about the cars they've been driving: the 2019 Mercedes-AMG G63 and Autoblog's long-term Kia Stinger. Then they discuss hooning the Subaru BRZ, WRX and WRX STI on ice at the Subaru Winter Experience. Then they talk news, specifically Amazon investing $700 million in EV startup Rivian, and Maserati finally launching the Alfieri. Finally they help spend a listener's money on a new, green car. Autoblog Podcast #571 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 Driving the 2019 Mercedes-AMG G63 Long-term Kia Stinger update Subaru Winter Experience Amazon invests in Rivian Maserati Alfieri on its way Spend My Money Feedback Email – Podcast@Autoblog.com Review the show on iTunes Related Video:

Apple lends prestige to a new Mercedes-Benz music system

Not often does Apple offer its name to products or technologies that emerge from beyond the walls of Fortress Cupertino. Could a partnership with Mercedes-Benz signal the start of something new? Mercedes’ new audio system unveiled this past weekend centers on the integration of Apple MusicÂ’s Spatial Audio with Dolby Atmos surround — a music enhancement generally heard in headphone-listening environments — in selected (and optional) Burmester audio systems. Plans are to offer the components initially in the Mercedes-Maybach S-Class, the S-Class as well as the EQE, EQE SUV, EQS and EQS SUV. No prices for the options were announced. Also partnering in the project is the Universal Music Group, one of the worldÂ’s leading music publishers. According to Mercedes, the Dolby tech “empowers musicians and audio engineers to place discrete audio elements or objects in a three-dimensional sound field, which goes beyond the capabilities of standard stereo productions. The system adapts to any playback environment, meaning fans can listen to music with unparalleled clarity that matches the artist's original vision in the studio.” We would expect no less from 31 speakers in a Maybach, powered by a pair of amps churning out 1,750 watts. Imagine Keith Richards cranking guitar through 31 speakers in an enclosed car cockpit. Almost three out of four music consumers say that they listen mostly in a car, says Mercedes Chairman Ola Kallenius. ”Through this exceptional partnership, we are giving our customers the extraordinary in-car audio experience they expect from Mercedes-Benz,” he said. “Both Apple and UMG share our vision and values and, together with Dolby, we will create a seamless and unique experience for our customers." Partnerships between automakers and audio companies have become common in recent years, and there have been mixed results from systems attempting to create a "surround sound" experience that goes beyond stereo. Bose put its systems into General Motors cars decades ago, and others followed, including Bowers & Wilkins, JBL and even the legendary McIntosh. Most recently, famed Italian speaker designer Sonon faber found a home in Maserati's new Grecale, and British speaker maker KEF is working with Lotus.