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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.

Mercedes-Maybach Ultimate Luxury SUV concept shown in leaked images

Just days ago, we posted the interior teaser image Mercedes-Maybach released of its Ultimate Luxury concept due to be presented at the Beijing Motor Show. Now photos of the entire vehicle, inside and out, have leaked online courtesy of the manufacturer. Thanks to the concept's own microsite being live for a short while, we've gotten a good look of the concept. And it's not just a dressed-up GLS by any means, even if there might be a GLS platform underneath it all: It's a high-riding four door sedan with a clearly formed trunk instead of a traditional SUV shape. There's a big waterfall grille flanked by low, aggressive three-unit headlights, and the detailing is a combination of SUV cues and something a lot more luxurious. It's not easy to design a three-box sedan that's still recognizably an SUV. Inside, there's white leather and rose-gold detailing everywhere. But the big deal is the powertrain, which in the concept is all-electric. The all wheel drive is propelled with four electric motors, with a combined power output of 750 horsepower. The battery, said to be a flat underfloor design, is good for 80 kWh and an EPA range of over 200 miles, and the vehicle's top speed is limited to 250 km/h, or 155 mph. There's DC fast charging at up to 350kW, meaning that the range can be boosted by 60 miles in just five minutes, and induction charging is also available. All in all, the vehicle reminds us of the 2009 Lagonda Luxury Utility Vehicle concept, which was also created around a three-box sedan shape and also based on a Mercedes platform, GL-Class in that case. It did not yield a production version, but maybe the Vision Ultimate Luxury will. Related Video: Featured Gallery Vision Mercedes-Maybach Ultimate Luxury View 9 Photos Image Credit: Mercedes-Maybach Green Beijing Motor Show Maybach Mercedes-Benz Concept Cars Electric Luxury mercedes-maybach

Smart brand will be built in China as a Daimler-Geely joint

FRANKFURT/BEIJING — Daimler will build its next generation of Smart electric cars in China through a joint venture with Geely, as a way to increase economies of scale in a market segment that is struggling to turn a profit. China's Geely built a stake of almost 10 percent in Daimler last year, saying it wanted to forge an alliance to develop electric and self-driving cars to better compete against new challengers such as Uber and Google. Daimler said on Thursday it would build the next generation of Smart-branded city cars at a purpose-built factory in China, and planned to share its expertise in manufacturing, engineering and design with Geely. The high cost of electric car batteries has made it hard for automakers to build affordable zero-emissions vehicles, leading several of them to strike alliances with Chinese partners. Daimler's German rival BMW recently unveiled plans to build electric Minis in China, where production costs are low and demand for small electric cars is rising. Daimler and Geely did not disclose financial terms of their deal. The details of the joint venture will be finalized by the end of 2019, they said in a joint press release. Daimler currently develops and builds Smart cars with Renault at factories in France and Slovenia. The Daimler factory in Hambach, France, will be retooled to build Mercedes-Benz cars. Geely has been expanding rapidly through mergers and acquisitions since 2010, when it acquired Swedish carmaker Volvo from Ford. Last year, Daimler and Geely set up a ride-hailing joint venture in China. Daimler's Chief Executive Dieter Zetsche said last month the German carmaker was in talks to deepen its alliance with Geely after the Chinese's group's chairman Li Shufu bought a 9.69 percent stake in Daimler in 2018.