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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.

New Mercedes E-Class nearly exposed, may be Maybach

The all-new Mercedes-Benz E-Class is marching closer and closer to production, with a new round of spy photos giving us our best look yet at the S-Class-inspired looks of the German brand's executive luxury car. There really is very little camouflage this time around – what's there looks more like the kind of plastic wrapping you'd see on a freshly imported vehicle at the port. In front, we can see the new E will wear similar LED accents to the S- and C-Class. The E-Class' big and little brothers also inspired the tail of the new model, where we can see slightly disguised, vertically oriented LED taillights. Prominent, enclosed exhausts are very similar to what we saw in our spy shots of the Mercedes-Maybach E-Class. Aside from the exhausts, this particular car also wears the same blingy wheels as the range-topping tester we spied last August. The thick-rimmed, multi-spoke design isn't the only giveaway to this car's luxurious intentions, though. Our last Maybach sighting showed a car completely covered in camo, making it difficult to tell just how large the rear doors are relative to the car we're seeing today. Instead of the doors, though, we suggest you look at the windows. Like the August spy photos, this prototype features tinted rear glass, which could perhaps indicate that we're looking at yet another example the second Mercedes-Maybach model. So is this yet another Maybach E-Class? We're leaning towards yes. The size of the back doors – and the rear quarter window, in particular – is close enough to what we saw last month, and the presence of tinted glass, the same exhausts, and the same wheels can't be discounted either.

EVO "2012 Car of the Year: The Track Battles" is a sports car salmagundi

EVO has come out with another gotta-watch-it video, throwing its 2012 Car of the Year contestants around the UK's 1.5-mile Blyton Park track. It's actually a 15-minute teaser for the full-length DVD detailing the magazine's Car of the Year selection, but the tease is worth every penny free second.
Tiff Needell and sports car racer Richard Meaden handle the wheel duties, the two driving five pairs of sports cars: Lotus Exige S vs. Porsche Boxster S, Morgan Three-Wheeler vs. Toyota GT86, BMW M135i vs. Porsche 911, Mercedes-Benz C63 AMG Black Series vs. Alpina B3 GT3, the marquee event pits the McLaren MP4-12C vs. the Pagani Huayra. After a head-to-head lap with commentary during drifts, Meaden takes each car out to set a representative lap time.
You'll find the verdicts, lots of tire smoke, and lines like "Anything you can do sideways I can do sideways" in the video below.