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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.

Mercedes fits new C-Class with AMG kit

It's only been a week and a half since Mercedes-Benz revealed the new C-Class, and it'll likely be a while yet before the replacement for the C63 AMG comes along. But if you want to see a preview of what it'll look like, look no further than the AMG aero kit that has just surfaced.
Expected to debut on the new C-Class at the fast-approaching Detroit Auto Show, the AMG Line Exterior Pack adds a new bumpers front and rear, side skirts, dual exhaust tips, mesh grille, aluminum window frames and - most importantly - 18-inch alloys packing upgraded brakes and fitted to a lowered sport suspension. All of which will help any C-Class look the part, even if the engine remains stock.

Continental Automotive recalls 5 million airbag control units

Takata isn't the only supplier having airbag problems. Rival manufacturer Continental Automotive Systems announced a recall of 5 million airbag control units fitted to vehicles from Honda, Fiat Chrysler Automotive, Mercedes-Benz, and even a certain Chrysler-based Volkswagen. This sweeping recall has actually been in progress for some time, although the exact scope is only now becoming evident. In October of 2015, Mercedes-Benz recalled 2008 and 2009 model year C- and GLK-Class vehicles because their Continental-made airbag control units could corrode. Such a condition could cause the airbags to deploy without cause or warning, or in the event of a crash, not deploy at all. You can read all about it in our post from last year. Now, Continental's recall is going wide. Alongside the already recalled C and GLK, you've already heard about the 2008 and 2009 Honda Accord airbag recall, which we reported on yesterday. Now, Fiat Chrysler is announcing the recall of the 2009 Dodge Journey, as well as the 2008 and 2009 Dodge Grand Caravan, Chrysler Town and Country, and their rebadged counterpart, the Volkswagen Routan. Yes, one manufacturer is recalling another manufacturer's vehicle. The models listed above only amount to about 580,000 vehicles out of 5 million bad airbag control units. And since Continental will notify manufacturers who will then issue their own recalls, it's extremely likely that more brands and vehicles will be ensnared. Stay tuned. Related Video: News Source: NHTSA via Automotive News - sub. req.Image Credit: Fabian Bimmer / Reuters Recalls Chrysler Dodge Fiat Honda Mercedes-Benz Safety Crossover Minivan/Van Sedan FCA