2003 Mercedes 230 Slk Convertible , on 2040-cars

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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 GLS updates Silver Star seven-seater

It can be bewildering, the staggering array of crossovers and SUVs offered by Mercedes-Benz. There's the G, the GL, the GLK and the GLA, not to mention the new GLE and the ML that basically started it all. So you can forgive yourself if you've never heard of the GLS. After all, it doesn't currently exist. But it will soon. In accordance with Benz's new nomenclature, the GLS-Class will be the replacement for the GL – the largest of the Mercedes utility vehicles and the only one with three rows of seats. Since the current GL was only launched about two and a half years ago, the new nameplate won't be attached to an all-new model just yet. But as you can see from these spy shots, it appears that Mercedes is preparing a facelifted version of the existing model to fit into the new (or at least renamed) lineup. The biggest changes discernible from these spy shots is the revised front end, with new headlights, a more upright grille and a reshaped bumper and hood to go along with it. Around back the changes are more subtle, with reshaped tail lamps, bumper and exhaust pipes. Inside we're expecting a cleaner center console with a new 8-inch touchscreen reportedly inspired by the iPhone. We don't know when, exactly, to expect the revised GLS to arrive on the scene, but given the relatively modest nature of the revisions and how close they look to being ready, we wouldn't expect it to be long now. Whether those minor changes will be enough to keep up with the all-new Audi Q7 just announced, however, is another matter entirely.

Carlsson SLK 340 Judd is winged up for hill climb glory

Carlsson has been expertly tuning Mercedes-Benz products for more than 20 years now, but we can't say as we remember the outfit turning out anything quite so racy as this SLK 340 Judd that it has brought along to the Geneva Motor Show this year.
This SLK is meant for competition, obviously, and Carlsson has already booked the car to race in several hill climb events in the E1 category. The purpose-built racer should have a fighting chance to do well in said races, with a shape vetted in wind tunnel testing for maximum downforce, the SLK uses a carbon-fiber bodyshell to help achieve a curb weight of just about 1,720 pounds.
The featherweight SLK's name comes from its 3.4-liter V8 engine, which churns out a wicked 610 horsepower to go with its 317 pound-feet of torque. A Hewland transmission with paddle shift operation manages all of the thrust.