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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.

Trump reportedly says he wants to wipe German cars off the U.S. map

BERLIN/FRANKFURT — A report that U.S. President Donald Trump has threatened to pursue German carmakers until there are no Mercedes-Benz rolling down New York's Fifth Avenue dented shares in the luxury car manufacturers on Thursday. An excerpt from German magazine Wirtschaftswoche's article, which cited several unnamed European and U.S. diplomats but did not include any direct quotes, could not be independently verified, while a U.S. Embassy spokesman in Berlin referred questions to Washington. The news and current affairs magazine said Trump had told French President Emmanuel Macron in April that he aimed to push German carmakers out of the United States altogether. Macron's administration in Paris declined to comment on the report. The Trump administration last week opened a so-called Section 232 trade investigation into vehicle imports, which could result in a 25 percent tariff on cars on the same "national security" grounds Washington used to impose metals duties in March. This could destroy exports by German carmakers, which control 90 percent of the U.S. premium market and are the biggest European Union exporters of cars to the United States. BMW owns Rolls-Royce, while Daimler has Mercedes-Benz, and Volkswagen controls Bentley, Bugatti, Porsche and Audi. Daimler, BMW and Audi declined comment. Porsche was not immediately available for comment. BMW shares were trading 0.5 percent lower at 0939 GMT, while Daimler and VW's shares were down 1 percent and 1.6 percent respectively, underperforming Germany's blue-chip DAX. Trump has railed against German carmakers before. And in early 2017, in an interview with German newspaper Bild, he said he would impose 35 percent tariffs on imported cars. At the time, the president called Germany a great car producer but said that the business relationship with the United States was an unfair one-way street. Germany's auto industry association VDA says its members exported 657,000 vehicles to North America last year, with total exports of vehicle components, cars, engines, as well as second-hand vehicles totaling 31.2 billion euros in 2016. Imports from the United States to Germany amounted to 7.4 billion euros, meaning a trade deficit of 23.8 billion euros the VDA's latest available figures show. However, German brands also have huge factories in the United States, where they built 804,000 cars last year, VDA said, providing jobs for U.S. workers. Berlin has reacted angrily to the U.S.

Mercedes-Benz releases US-spec 2014 Sprinter details

Last week, Mercedes-Benz released the details for the updated 2013 Sprinter intended for global markets, but this week it has announced what changes are being made to the US-spec version of the van for the 2014 model year, including the Freightliner model. As expected, most of the changes made to the European model will be present on the 2014 Mercedes-Benz Sprinter when it goes on sale in the US, which is expected to be this fall.
The biggest difference between the Sprinter announced last week and the one headed to our shores is what is found under the hood. While European Sprinters will come with diesel engines and offer the availability of a supercharged four-cylinder gasoline or CNG engine, US Sprinters will still offer the 3.0-liter V6 BlueTEC diesel. This year's Sprinter now comes standard with a new base engine, the 2.1-liter four-cylinder BlueTEC diesel. This smaller engine will produce 161 horsepower and 265 pound-feet of torque, and will be paired to a seven-speed automatic transmission; the optional 3.0 V6 puts out 188 hp and 325 lb-ft of torque, and will be mated to a six-speed auto.
Fuel economy for the new Sprinter has not been announced, but Mercedes-Benz has made numerous changes with the goal of improving efficiency. To this end you'll find a new, low-friction rear axle and the optimization for the generator, fuel pump and power steering pump.