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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.

The Mercedes G-Class gets the full Maybach treatment before the curtain finally closes

Like the hotdog and soda combo at Costco or the official website for the 1996 movie Space Jam, the Mercedes-Benz G-Class has soldiered on nearly unaltered since its birth. Sure, there have been variants like the wonderfully over-the-top G63 6x6, but the G-Wagen is essentially the same squared-off SUV with rifle-bolt locks and doors with enough mass to support a minor gravity field. Spy shots show a replacement is finally on the horizon, but based on the leaked YouTube video above and Instagram post below, it looks like the current model is going to get the full Mercedes-Maybach Landaulet treatment before the curtain finally closes. While there has been no official word from the automaker, all signs point to a genuine Mercedes-Maybach product. The vehicle is badged as a G650, which falls in line with other current V12-powered Mercedes-Maybach products. The Maybach name and badge are found in all the expected places. The license closely matches other Mercedes German-manufacturer plates. The carbon fiber fender flares and portal axles look like they were taken from the G550 4x42. The latter means, despite the increased wheelbase, this new model should still be a formidable off-road machine. This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings. While we can't see the interior, look for the typical Maybach treatment. That means high-quality leather surfaces throughout and an increased focus on rear seat comfort and convenience. If this is indeed a G650, it's packing a 6.0-liter twin-turbocharged V12 under the hood that churns out 630 horsepower and 737 pound-feet of torque. The partial convertible top is what gives this the Landaulet moniker. According to the text on this Instagram post, there will only be 99 examples produced. Look for a full reveal in the next few months. Related Video: This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings.

2014 Mercedes-Benz SLS AMG Black Series [w/video]

The biggest misconception about the Mercedes-Benz SLS AMG Black Series is that it's simply a higher-performing version of the SLS GT - a closer look, or better yet, a few hot laps on a high-speed racing circuit, reveals that is anything but the case.
Launched in the States in mid-2011, the standard SLS GT is a 583-horsepower, all-aluminum, gull-wing coupe with performance that positions it near the top of the exotic segment. While the AMG team at Mercedes-Benz could have left it alone, their experience with the SLS AMG GT3 race car said there was room for improvement, so they devised the SLS Black Series. The transformation from SLS GT to SLS Black Series is extensive, with no fewer than 17 different significant enhancements.
The engine mapping, crankshaft, connecting rods, valve-train, intake, exhaust and cooling are all modified and the engine's redline bumps up from 7,200 to 8,000 rpm, which pushes output of the hand-built 6.3-liter V8 to 622 horsepower. The power steering receives a new ratio, a coil-over AMG Adaptive Performance suspension is installed along with underbody braces, the track is widened, two-piece carbon-ceramic brakes replace iron rotors at each corner and a lightweight titanium exhaust is fitted beneath. The AMG Speedshift seven-speed dual-clutch gearbox is modified and an electronically controlled AMG rear differential lock ensures the power goes to the pavement. Last on the mechanical upgrades are new lightweight forged wheels (10x19 inches front and 12x20 inches rear) wrapped in special R-compound Michelin Pilot Sport Cup tires.