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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.

2016 British Grand Prix kept mostly calm and carried on

Three bursts of chaos decided the course of the British Grand Prix. The first was a literal cloudburst a dozen minutes before the race, which poured water on the Silverstone Circuit while drivers sat on the grid. Six minutes before the lights-out, the race director decided to start the race behind the Safety Car. The field loped around the wet track for five laps. When the Safety Car pulled off, the three leaders – Mercedes-AMG Petronas' Lewis Hamilton, followed by teammate Nico Rosberg and Red Bull's Max Verstappen – stayed out. Behind them, the second chaotic moment occurred: a big group of drivers made pit stops for intermediate tires. When Manor's Pascal Wehrlein spun at Turn 1 on Lap 7, officials issued a Virtual Safety Car. With the rest of the field slowed down, the three leaders ducked into the pits on Lap 8 for intermediates. The fortuitous timing meant all three drivers rejoined the track in their original positions. By Lap 9, with racing resumed, Hamilton had a 4.9-second lead on Rosberg. From that point, even as the track dried, no one bothered Hamilton during what one commentator called "a measured drive." The Brit won his home grand prix, taking the checkered flag seven seconds ahead of Rosberg. Rosberg had to earn second place on track. The German's car didn't respond well to the intermediate tires, so Verstappen excecuted an outstanding pass on Rosberg on the outside through Chapel on Lap 16. After everyone switched to slicks, Rosberg's Mercedes reclaimed its mojo and the German hunted Verstappen down, passing the Dutchman on Lap 38. The final touch of chaos happened when Rosberg's gearbox threw a tantrum on Lap 47 of the 52-lap race. Rosberg radioed his engineer, "Gearbox problem!" His engineer replied, "Affirm. Chassis default zero one. Avoid seventh gear, Nico." The race stewards allowed the engineer's first two statements, but stewards said the instruction about seventh gear contravened the rule that "the driver must drive the car alone and unaided." After the race, officials added ten seconds to Rosberg's time, demoting him to third behind Verstappen. Rosberg's is the first penalty arising from radio communication restrictions. Unsurprisingly, Mercedes will appeal. At this year's Baku race the radio controversy stemmed from engineers refusing to tell drivers what to do. Now we know what happens when the pit wall gets loose lips.

Germany says nein to EU ban on new fossil-fuel cars from 2035

BERLIN (Reuters) - Germany's government will not agree to European Union plans to effectively ban the sale of new cars with combustion engines from 2035, Finance Minister Christian Lindner said on Tuesday. In its bid to cut planet-warming emissions by 55% by 2030 from 1990 levels, the European Commission has proposed a 100% reduction in CO2 emissions from new cars by 2035. That means it would be impossible to sell combustion engine cars from then. European Parliament lawmakers backed the proposals this month, before negotiations with EU countries on the final law take place. Speaking at an event hosted by Germany's BDI industry association, Lindner said there would continue to be niches for combustion engines so a ban was wrong and said the government would not agree to this European legislation. Lindner, a member of the pro-business Free Democrats, which shares power with the Social Democrats and Greens, said Germany would still be a leading market for electric vehicles. (Reporting by Christian Kraemer; Writing by Madeline Chambers; Editing by Miranda Murray and Edmund Blair) Green Government/Legal Green Audi BMW Mercedes-Benz Volkswagen Opel SEAT Skoda