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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.

Lewis Hamilton beats Sebastian Vettel in Chinese Grand Prix

SHANGHAI (Reuters) - Lewis Hamilton mastered Shanghai's changing conditions and stayed clear of squabbling rivals to win the Chinese Formula One Grand Prix on Sunday. The Briton eased his Mercedes across the line 6.2 seconds ahead of Ferrari's Sebastian Vettel. Max Verstappen, who started 16th, finished a surprise third to hand his Red Bull team their 100th podium. It was Hamilton's 54th career win and a record fifth in Shanghai. But it was the triple champion's first this season and returned Mercedes to the top of the podium after Vettel won last month's season-opening race for a resurgent Ferrari. "I'm so happy with my first win of the year and I can't believe it if I'm honest," said Hamilton after the race, which also handed him his 106th podium, putting him joint second with Alain Prost on the list of drivers with most rostrum results. "What I said to Sebastian as I left the last race ... I said I'm coming back in the next one. When I got on the podium it was like 'I told you'." MOTOR-F1-CHINA/ View 12 Photos Hamilton, who finished second to Vettel in Melbourne, heads into the next race in Bahrain in a week's time tied on points with the German. Mercedes, meanwhile, lead the constructors' standings by one point over Ferrari. Hamilton started from pole position, but the conditions were a bit of a lottery for all the drivers with the track damp in patches but drying quickly. He kept the lead off the line ahead of Vettel, who came under investigation for lining up out of position on his grid slot. The German, though, stayed second, fending off Valtteri Bottas in the other Mercedes, who had started third. Lance Stroll, the 18-year-old rookie, spun off the track on the first lap after making contact with Force India's Sergio Perez. The Canadian beached his Williams in the gravel, bringing out the virtual safety car. Vettel took the opportunity to dive into the pits to change to dry weather tires. His gamble backfired when Antonio Giovinazzi — standing in for Pascal Wehrlein at Sauber — crashed, bringing out the actual safety car two laps later. The four-times world champion found himself bottled up behind Ricciardo and his slower team-mate Kimi Raikkonen, costing him valuable time. As the trio squabbled for position, Hamilton pulled clear at the front. By the time Vettel managed to get past, with a series of spectacular overtaking moves that included banging wheels with his former team-mate, Hamilton was too far ahead.

Mercedes warms up the SLC

The Mercedes-Benz SLC moniker was once thought to be revived for the vehicle that became the Mercedes-AMG GT, but the German luxury brand is now rumored to use the name for its upcoming refresh for the SLK. Our spies recently snapped some shots of the updated hardtop convertible testing while not wearing much camouflage. These photos suggest not to expect any significant changes in styling for the refreshed SLK. The lower portion of the front bumper has a single center opening, and the grille gets the latest iteration of Mercedes' single-bar design. The camouflage offers more concealment at the rear, but there's clearly something to hide. The exhausts are better incorporated in the shape, as well. Mercedes is also expected to update the SLK's powertrains with the refresh into the SLC. There could be an AMG Sport version to slot between the regular model and full-bore AMG. Like the C450 AMG Sport, this one might use the brand's 3.0-liter, twin-turbo V6 with 362 horsepower. Related Video: