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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.

Autoblog Minute: Volvo, Mercedes, Google back autonomous tech

Self-driving cars could make our commutes a breeze but what happens when something goes wrong? Three industry leaders step up with an answer. Autoblog's Adam Morath reports on this edition of Autoblog Minute, with commentary from Pete Bigelow. Show full video transcript text [00:00:00] Self-driving cars could make our commutes a breeze but what happens when something goes wrong? Three industry leaders step up with an answer. I'm Adam Morath and this is your Autoblog Minute. Volvo, Mercedes and Google have all come forward to say that in the event of a systems failure of one of their autonomous vehicles, they would be willing to accept full liability. For more we go to Autoblog's Pete Bigelow: [00:00:30] - [00:01:00] [00:01:30] [Pete Bigelow Interview] With Volvo setting the precedent we'll see how the rest of the industry responds. For Autoblog, I'm Adam Morath. Autoblog Minute is a short-form video news series reporting on all things automotive. Each segment offers a quick and clear picture of what's happening in the automotive industry from the perspective of Autoblog's expert editorial staff, auto executives, and industry professionals.

Recharge Wrap-up: Audi's EV SUV to be built in Brussels, Mercedes-Benz to extend EV range

European Union Industry Commissioner Elzbieta Bienkowska is demanding that Volkswagen compensate owners of cars affected by the diesel emissions scandal. She says European customers should receive the same goodwill compensation as American drivers, whom VW is providing with $1,000 worth of recompense. "The issue of compensation goes beyond the difference in the legal setup between the US and the EU and plays a fundamental role in viewing VW as a responsible and trustworthy company," says Bienkowska in a letter to Volkswagen CEO Matthias Mueller. Bienkowska has also requested detailed data about the vehicles and "corrective measures" VW is planning. Read more from Automotive News Europe. Mercedes-Benz will equip its plug-in vehicles with higher-capacity batteries as it expands its electric model range. While the PHEVs it has released so far have electric driving ranges between 14 and 20 miles, better batteries should extend that range starting around model years 2018 or 2019. After releasing a slew of plug-ins by the end of next year, Mercedes-Benz development director Dr. Thomas Weber says, "The next-generation vehicle will overcome the 30-km to 50-km hurdle and then the next generation after that will be 80-100 km when they run as pure electric cars." Read more at Green Car Reports, or from Motoring. Audi will build its pure electric SUV at its plant in Brussels, Belgium. The batteries for the vehicle based on the Audi E-Tron Quattro concept (perhaps to be called the Q6) will also be built at the Brussels plant when production begins in 2018. With this announcement comes news that production of the A1 will shift from Brussels to Martorell, Spain, while Q3 production will move from Spain to Gyor Hungary. Audi says the Brussels facility will "become a key plant for electric mobility at the Volkswagen Group." Read more at Green Car Congress, or in the press release below. Audi production network: ready for electric mobility - Premium manufacturer to produce large series of electric cars in Brussels as of 2018 - New models for Martorell (Spain) and Gyor (Hungary) - Audi CEO Rupert Stadler: "We are increasing our efficiency and bundling key competencies" Audi is preparing its international production network for the mobility of the future. Large series production of the first purely electric driven SUV from Audi will begin at the site in Brussels in 2018. The plant will also produce its own batteries.