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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.

Recharge Wrap-up: Cool new Euro VI railroader Unimog, Car2go hearts charity

Mercedes-Benz's mega-cool road-railer Unimog now boasts Euro VI compliance. Used for railroad track maintenance and train shunting work, this diesel-powered Unimog offers about a 90-percent improvement in particulate emissions over the Euro V. The new engine also offers improved efficiency. It provides 231 horsepower, and with eight forward and eight reverse gears, it can travel up to 31 miles per hour in either direction. It also has new in-cabin features that make it easier to use for the driver. Read more about the new road-railer Unimog in the press release below. Carsharing group Car2go has launched a donation feature within its mobile app, called "ride2provide." The feature lets users find "heart cars," which, when used, include a $1 donation to Whole Planet Foundation. The money raised by the ride2provide program goes towards the Whole Planet Foundation's mission of providing microcredit to the poor for creating or expanding home-based businesses. Car2go's ride2provide program started August 4, and runs for 90 days. Learn more in the press release below. China continues to pave the way for more EVs, but some people are still skeptical they'll catch on. Charging station operators will be forgiven some of their electricity fees until 2020, said the National Development and Reform Commission (NDRC). China has already extended tax exemptions on EVs through 2017. The NDRC is also urging local governments to offer subsidies and free charging. Still, the costs involved with installing chargers are keeping many from doing it, and many consumers are hesitant to become early adopters of EVs. Read more at ECNS. car2go Launches "ride2provide" To Help car2go Communities To Work Together To Give Back "ride2provide" To Be Integrated via car2go Mobile App Beginning August 4th car2go To Donate To Whole Planet Foundation® As Program's First Exclusive Charity car2go North America LLC, the fastest-growing global carsharing company, announced that it has launched "ride2provide," a donation feature to be integrated into the car2go mobile app for iPhone and android iOS beginning today, August 4th. The new initiative seeks to help car2go communities across its 15 locations and over 400,000 members in North America to work together in donating to a charitable cause, and will first kick off with a 90-day partnership with Whole Planet Foundation as the program's first exclusive charity.

Recharge Wrap-up: Shift to offer Teslas for Hire, Model S P85D beats Ferrari in drag race

A company called Shift plans to provide bikes and EVs for hire. Based in Las Vegas, NV, Shift will provide chauffeured ride services like Uber, but will also include a car- and bike-sharing service that delivers the desired wheels to the customer. Shift's fleet will include EVs like the Smart Fortwo Electric Drive and the Tesla Model S. Shift also promises that you will, "Be on your way within five minutes," which is a pretty tall order. Shift is scheduled to be available to members beginning this fall. Read more at The Car Connection. Nissan UK has confirmed the price of replacement batteries for the Leaf. UK drivers will be able to buy new batteries for 4,920 pounds (or about $7,738). That's considerably more than the price of $5,499 for US customers. Customers get 1,000 pounds back when they exchange their old battery. The original battery is covered under a five-year, 60,000-mile warranty, and most owners will never need to replace it. According to Nissan, only three replacement batteries have been sold out of 30,000 Leafs sold in Europe. Read more at Autocar. The Tesla Model S P85D walloped a Ferrari in an impromptu drag race video. The Ferrari driver pulls up alongside the Tesla and asks, "What you got in there?" before challenging him to a race. The Ferrari gets a head start, but the Tesla pulls out ahead quickly. The video also gets the reactions of some passengers to the car's mighty acceleration. See the video below and read the account of a drag race against a Lamborghini Aventador at Car Throttle. Australian website Drive has chosen their Cars of the Year in various categories. The Tesla Model S was a carryover winner for Luxury Car Over $80,000, but the Mercedes-Benz C200 narrowly overtook it to be crowned the overall winner. Regarding the Model S, one judge says, "This makes every other EV look at least a generation behind." The main thing that held the Tesla back from winning outright was the near-term lack of charging infrastructure. The judges did note Tesla's plans to build a network of Superchargers in Australia, but also pointed out that those plans exclude much of the country so far. See the video below and read more at Drive. This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings. This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings.