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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.

2014 Mercedes-Benz E63 AMG rumbles on stage 4Matic style

Bruce Hornsby and his soothing piano skills helped introduce us to the 2014 Mercedes-Benz E-Class, but the monstrous E63 AMG sedan needed no entrance music as it rumbled on stage. The 550-horsepower (and up) sedan sat proudly alongside the rest of the redesigned E-Class on stage at the Detroit Auto Show, but stood miles apart in intention and execution.
In addition to a choice of sedan and wagon body styles, the E63 AMG will also offer buyers the choice of the standard 550 hp or an upgraded 577-hp S-Model; regardless of output, all 2014 E63 AMG models will come standard with the 4Matic all-wheel-drive system.
We already saw the E63 AMG's aggressive styling last week, but now we have a full assortment of live images for you to enjoy as well as the Mercedes-Benz press release, which is also posted below.

Mercedes-Maybach SUV concept headed for Beijing reveal in April

Mercedes-Benz has toyed with the idea of a Maybach SUV for at least 11 years. According to Autocar, we'll finally see a concept with production intent at the Beijing Motor Show next month, the luxury SUV slated for market release next year. As has been the rumor for at least six years, the Maybach people carrier will be based on a stretched version of the GLS, which moves to the company's new Modular High Architecture with the 2019 model. Back in 2007 when Maybach was its own brand and selling roughly 300 units per year, Car magazine reported that brand chiefs were interested in convertible versions of the Maybach 57 and 62 sedans, and an SUV. Maybach built a one-off concept based on the GL — the former GLS-Class — in 2009, but never took the idea further. The rumor popped up again in 2014, then in 2015, reaching not-if-but-when status early last year. A decade on, it's finally time to play the hand. Even though the super-luxe SUV would sit on a stretched version of what is already a three-row SUV, it's reasonable to expect the Maybach SUV will only get two rows. That would give designers plenty of extra room for seating luxury and amenities even beyond the S-Class Maybach. On the other hand, if Mercedes sticks to the rough Maybach playbook so far, a triple-row Maybach would be the only such SUV in the mid- to upper-six-figures. The S-Class 560 4Matic starts at $102,990, the S 560 4Matic Maybach starts at $168,600. Applying that spread to the $94,500 GLS 550, you'd land around $160,000 before adding the markup for a new generation. That kind of starter pricing might make a great tweener proposition. Mercedes could focus on a range of buyers who want to go upscale from the $125,300 AMG GLS 63, without needing to worry — yet — about challenging Bentley and Rolls-Royce. Power is said to come from some version of the company's oft-applied 4.0-liter twin-turbo V8 that puts out 462 horsepower in the S 560, but the 3.0-liter inline-six hybrid in the S 560e is under consideration. We'll know next month, when the lightly veiled concept takes the stand in China. The full-on production version should get an introduction at this year's L.A. Auto Show. Related Video: