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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.

Daimler rebuffs Geely offer to buy stake

HONG KONG/BEIJING - Daimler AG has turned down an offer from China's Geely to take a stake of up to 5 percent via a discounted share placement, as the German automaker has long been reluctant to see existing shareholdings diluted, sources with knowledge of the talks said. A stake of that size would be worth $4.5 billion at current market prices. Although Daimler declined the offer, it told Geely it was welcome to buy shares in the open market, the sources added. Carmakers in China have embarked on a flurry of dealmaking, as they scramble to boost production of electric and plug-in hybrid vehicles ahead of tough new quotas to be imposed by Beijing, which wants to reduce urban smog and lower the country's reliance on oil. People with knowledge of Geely's thinking said the company was keen to access Daimler's electric car battery technology and wanted to establish an electric car joint venture in Wuhan, the capital of Hubei province. Geely, which also owns Swedish car maker Volvo, is still hopeful it can secure a deal in some form over the coming weeks, they added. The two automakers met in Beijing in recent weeks at Geely's behest. There, the Chinese firm, formally known as Zhejiang Geely Holding Group, offered to take a stake of between 3 percent and 5 percent if Daimler would issue new shares at a discount, the sources said. It was not immediately clear what kind of discount for the shares Geely had in mind or whether Geely was interested in buying the shares on the open market. A spokesman for Geely declined to comment. A spokesman for Daimler said the company was "very happy with our shareholder structure at present", but added that it would welcome new investors with a long-term interest in the company. Shares in Daimler were up 1 percent in early Wednesday trade, in line with the broader market.DAIMLER ALREADY TIED TO BAIC, BYD Geely, which has a market value of some $32 billion, is the leading domestic brand in China with a 5 percent market share, according to an analysis by Nomura Securities. A stake of 5 percent would establish it as Daimler's third-largest shareholder behind the Kuwait Investment Authority and BlackRock, who hold 6.8 percent and 6 percent respectively, according to Reuters data.

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.