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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.

Rosberg survives the Mexican mess | 2016 Mexican Grand Prix recap

Roughly ten messy laps defined the Mexican Grand Prix – five laps at the start and five at the end. Those laps included a couple of actual wrecks and a few more near wrecks that turned the entire day into chaos. To have any chance of winning the 2016 Driver's Championship, Lewis Hamilton needed to get his Mercedes-AMG Petronas across the finish line ahead of teammate Nico Rosberg. Once again we got a weekend full of vintage Hamilton, the Brit dominating the from Friday to Sunday, except for the first corner of the first lap. Pole-sitter Hamilton reached Turn 1 clearly in front of the field. But he couldn't make the corner and stay on track, so he zipped into the runoff area and over the grass, rejoining at Turn 3 still ahead of the field. The stewards didn't penalize Hamilton, one commentator's explanation being that Hamilton "was not battling another car." The non-action left car #44 to enjoy a lights-to-flag win. At that very same corner, Rosberg also availed himself of the runoff area. His infraction seemed destined to incur a penalty until replays showed that Max Verstappen in the Red Bull slid wide and bumped Rosberg, causing the German to go off track. No penalties were handed out there, either. Verstappen would return to hound Rosberg later in the race when angling for second place. Verstappen took a stab through Turn 4 on Lap 50 of the 71-lap race, but ran off the track and lost touch with the Mercedes by Lap 55. Ferrari got half of its strategy right in Mexico, putting Sebastian Vettel hard on the charge in the final stint. The German got within DRS range of Verstappen on Lap 67, with Red Bull's Daniel Ricciardo a little more than a second behind Vettel. On Lap 68, Verstappen pulled the same move as Hamilton at the beginning of the race: the Dutchman ran wide through Turn 1, zoomed over the grass and rejoined the track at Turn 3, staying ahead of Vettel the whole time. With three laps remaining, the stewards chose to investigate after the race. In spite of Verstappen's own team telling he probably needed to cede position to Vettel, Verstappen stayed in front and slowed just enough to put Vettel under threat from Ricciardo. On Lap 70 Ricciardo had closed up to Vettel's gearbox. Headed for Turn 4, Vettel swung outside to take the corner. When Ricciardo moved inside to pass, Vettel moved inside to block the Aussie while both cars were in the braking zone. The Ferrari made light contact with the Red Bull, but Vettel held his position through Turn 5.

Recharge Wrap-up: Toyota FCV Rally Car To Compete, Barra bullish on Chevy Volt

The Toyota FCV will compete in the last stage of the 2014 Japanese Rally Championship. The sport-tuned hydrogen-powered car will tackle the 177-mile Shinshiro Rally on November 1 and 2, emitting no greenhouse gases in the process. The rally course will help prove the safety of the vehicle before it goes on sale in Japan in the next several months. The Toyota FCV, rumored to be called "Mirai" in Japan, will begin sales there before April, according to Toyota, and in the summer in the US and Europe. Read more in the press release below. Carsharing is becoming more popular, and more visible, throughout the world, including the US. According to WardsAuto columnist John McElroy, 18 percent of US drivers have used some sort of carsharing service. Additionally, he says 60 percent of Americans are familiar with Zipcar and Uber. Mercedes' Harald Kroeger says promotions like free parking for carshares in Stuttgart are encouraging growth for Daimler's carsharing service, Car2go. Read more at WardsAuto. Ethanol is being help up by rail transport, according to ethanol producer Green Plains. More and more stations are carrying E15 blend gasoline, but grain producers have complained that crude oil is given higher priority by the rail lines shipping it, which rail companies deny. Union Pacific and BNSF Railway say they are stepping up service to make sure that ethanol can be shipped reliably to customers. Read more at Omaha World-Herald. General Motors "has placed a significant bet [on] the electrification of the automobile," says CEO Mary Barra. In a speech to the Detroit Economic Club this week, she spoke about the Chevrolet Volt, and its importance to GM's future. While Barra admits the Volt's success has been "not everything we wanted," it has provided experience, and shows that EVs have "an important role in the future of GM." The new Volt is more refined, stores more energy, has longer range, uses less fuel and is a big investment for Michigan. She announced that the new Volt's electric drive system will be built in Warren, and that all of its major components will be made in Michigan. "Silicon Valley doesn't have a corner on the market for innovation, creativity and drive," says Barra. "These qualities exist here – in this region – as well." See the speech's highlight video and read more in the transcript below. This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings.