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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.

Ford and Mercedes join Renault in French emissions investigation

The French government is investigating certain models from Ford, Mercedes-Benz, and Renault because they allegedly produce more nitrogen oxide than the country's pollution rules allow, according to Automotive News, citing a French newspaper. After VW's emissions scandal, French regulators began checking more vehicles for evidence of defeat devices and excessive real-world pollution. According to Automotive News, the Mercedes S350 allegedly showed inconsistent results across these tests, and a Ford C-Max had NOx levels five times over the limit. The Renault Captur crossover, Espace, and an unnamed utility vehicle also had results that were too high. The French testing for this investigation includes an on-road emissions check that's not part of the EU's normal evaluations, which some automakers claim is unfair. "Unofficial on-road testing has varying conditions and can produce significantly different results," a Ford of Europe spokesman told Automotive News. Renault representatives met with French officials on January 18 to explain the situation. The company later submitted a plan to recall 15,800 examples of the diesel Captur, and said it would offer a voluntary software upgrade for about 700,000 other vehicles, according to Automotive News. Representatives from Ford and Mercedes will meet with the government soon, too. Renault's stock price plunged last week after investors heard that French regulators searched three of the automaker's sites as part of the emissions investigation. The stockholders feared an environmental scandal like the one currently embroiling Volkswagen. There's one major difference – as of now, there's no evidence Renault equipped any of the polluting models with defeat devices. Related Video:

Sales start for $146,000 Mercedes-Benz S500 Plug In Hybrid

Mercedes-Benz's first production plug-in hybrid is chock full of astounding numbers, including the price tag. The base price is 108,944.50 euros, or about $146,000 US. If that didn't make your eyes glaze over, the Daimler division is ready to take your down payments now that the Mercedes-Benz S500 Plug-in Hybrid is officially on sale. Deliveries to European dealerships start in September. Details on the PHEV sedan were divulged last August and it was first shown off at last year's Frankfurt Motor Show. Benz calls it the, "first luxury saloon with the performance of a V8 and the fuel consumption of a compact model." That's no exaggeration. The car's powertrain that pairs a 3.0-liter V6 twin-turbo with an electric motor that delivers 436 horsepower and a 0-62 mile per hour acceleration time of just 5.2 seconds. Top speed is 155 miles an hour. On the green side, the car can go as far as almost 21 miles on electric power alone and gets a fuel-efficiency rating, on the more lenient European driving cycle, of 84 miles per gallon equivalent. The car also includes a so-called COMAND navigation system that tweaks how the electric motor is used based on the driver's desired route. Very high-tech. We've got Mercedes-Benz's press release below. Sales release for S 500 PLUG-IN HYBRID: First PLUG-IN HYBRID with a star starts With immediate effect the Mercedes-Benz S 500 PLUG-IN HYBRID can be ordered for prices from 108,944.50 euros[1]. The S 500 PLUG-IN HYBRID blends an ultramodern hybrid drive configuration with the unique innovations and the luxurious equipment and appointments of the S-Class. The luxury saloon with a long wheelbase impresses with unique dynamism and efficiency. Thanks to standard pre-entry climate control it also offers unique climate comfort. In September the first certified three-litre luxury saloon in the world will be arriving at the dealers - a further milestone on the road to emission-free mobility. "The new S 500 PLUG-IN HYBRID offers our customers the entire range of innovations that make our new S-Class so successful, and thanks to its intelligent operating strategy ensures outstanding driving pleasure and dynamism combined with the highest efficiency. Moreover, it allows completely emission-free driving for up to 33 km," says Ola Kallenius, Executive Vice-President for Sales at Mercedes-Benz Cars. "The S 500 PLUG-IN HYBRID is the first luxury saloon with the performance of a V8 and the fuel consumption of a compact model.