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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.

Zetsche's CEO tenure extended through 2016 at Daimler

There appear to be two takes on Daimler CEO Dieter Zetsche having his contract extended for three more years, to 2016. A report in The Detroit News quotes the chairman of Daimler's supervisory board, Manfred Bischoff, talking up the stability at the top, "With today's extensions of the contracts of Dieter Zetsche and Thomas Weber, we are maintaining the important continuity at the top executive level." Bischoff also stated that that Zetsche has a plan to "further enhance Daimler's overall performance."
Over at Reuters, though, the three-year extension was seen as a lack of complete confidence in Zetsche's plans, since his contract was supposedly meant to be extended by five years. A spokesman said the board decided to extend executive contracts by only three years if the person was 60 or would turn 60 during the contract, but that was news to observers. Zetsche wants to make Mercedes-Benz the top selling luxury manufacturer globally by 2020, but has fallen to third place behind Audi and BMW. It hasn't held the top spot 2005, and investors judged it valued at half that of BMW at the end of 2012 once Daimler's truck business was subtracted.
Analysts cites the fact that Daimler stock hasn't bested its rivals but twice in twelve years, and that the company revised its profit target downward last year by nearly one billion euros, warning of stagnant earnings this year and will miss its original margin target for 2013.

Maybach crossover looking more likely, Smart crossover possible

Mercedes-Benz executives are still making positive noises about the chances of a Mercedes-Maybach SUV. Following Daimler CEO Dieter Zetsche's answer of "most likely" at the Geneva Motor Show, Mercedes Cars head of sales and marketing Ola Kallenius told Autocar that a Maybach SUV based on the next-generation GLS is "the more likely scenario." That's the same Kallenius that told Automotive News just last November that "we have no plans for it [a Maybach SUV]." It's a subtle shift, to be sure, but it's still a shift. The GLS – introduced as the latest-generation GL in 2013 – is still undergoing testing for its its mid-cycle refresh, so a Maybach version is a few years off. That would, coincidentally, give Mercedes time to see how the other super-luxe entrants are faring, and prepare its charge accordingly. Autocar expects that should it be built, it will come when the GLS shifts to the S-Class platform and most likely get the twin-turbo V12 from the Mercdes-Maybach S600 sedan, although the company's 4.0-liter twin-turbo V8 is possible if there are strong intentions for the Chinese market. Also on Stuttgart's agenda of dreams is a Smart crossover, according to the report. It could be Smart's best chance at profitably extending the range, based on the mania for tiny utes, and that would help both Daimler and the ForTwo's Renault Twingo sibling. It sounds like this is a ways off, though, due to coming up with an engineering solution for the Smart's engine packaging. Related Video: