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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, Renault-Nissan to work together on truck project

Just a few weeks ago, Mercedes-Benz barged into the automotive world with news of a pickup as a mysterious but enticing future model from the German brand. Rumors of a possible collaboration with Nissan followed, but Renault-Nissan Alliance CEO Carlos Ghosn refused to give any clear details. That speculation is now over, because the automakers made their truck partnership official. This new information reveals that the Mercedes truck won't be a full in-house creation from Daimler. For example, the pickup will share some of its underpinnings with the latest Nissan NP300 Navara. The German company's engineers, however, will work to change the design to their liking. Also, as in the rendering, Mercedes will use a double-cab body for the model. "Thanks to our well-established partnership with the Renault-Nissan Alliance, we are able to drastically reduce the time and cost to enter this key segment." Daimler Chairman Dr. Dieter Zetsche said in the company's release. Nissan will play a further major role in the project by helping Renault develop a pickup based on the Navara as well. By 2020, all three trucks will be built together in Cordoba, Argentina, for Latin American markets and in Barcelona, Spain, for other parts of the world. Mercedes will target both regular customers and commercial buyers with its truck. While still not officially slated for North America, there's a chance that the Mercedes truck might be sold here. The US arm of the company reportedly has until the end of the year to decide to offer it with some added luxury-oriented upgrades compared to the rest of the world. Daimler & Renault-Nissan Alliance expand cooperation to 1-ton pickup trucks April 07, 2015 Daimler & Renault-Nissan Alliance expand cooperation to 1-ton pickup trucks Nissan and Daimler to jointly develop midsize pickup truck Mercedes-Benz pickup to share some of the architecture with the all-new Nissan NP300 Mercedes-Benz vehicle to be engineered and designed by Daimler to meet specific needs of its customers Mercedes-Benz pickup will target Europe, Australia, South Africa and Latin America Pickup trucks to be built in Barcelona, Spain, and Cordoba, Argentina Latest milestone in the five-year strategic cooperation between Daimler and the Renault-Nissan Alliance STUTTGART/PARIS/YOKOHAMA –The Renault-Nissan Alliance and Daimler AG will expand their five-year strategic cooperation into the pickup truck segment.

Buy a V8 Mercedes-Maybach, or splurge for a V12? Oh to have such problems

There's a certain air that surrounds the Maybach badge, and it's not just the scent being pumped out by the ionizer in the car's glovebox. It's the cream of the crop when it comes to German luxury. These cars are filled with an acre's worth of wood and a herd's worth of cows, ensuring your fingers rarely touch materials as pedestrian as plastic. It's as quiet, as smooth, and as imposing as you think it would be. Though the latest model from Mercedes-Maybach, the S550, might have swapped in a V8 and all-wheel drive in place of the V12 at the heart of the S600, no other amenities have been lost in translation. The car's size gives it a certain presence. Staring at the profile shows a wheelbase that spans two counties, necessitating a microphone and speaker setup simply so that the driver can converse with the passenger – and a Maybach will almost always have a passenger. No one buys a Maybach to drive. You buy a Maybach to be driven. No means of transport short of business-class airline seating offers this much space. Sit back, recline the seat, roll up the shades and enjoy your $167,125 cocoon. But you know all of that already. What you really want to know is if $25,000 - the V12-powered S600 starts at $192,225 - is worth it to gain an extra four cylinders, 74 horsepower, and 96 lb-ft of torque. On paper, no, it's not. The two cars have identical performance numbers, and the S550 benefits from Mercedes' 4Matic all-wheel-drive system. Even with all-wheel drive, the S550 weighs less than the nose-heavy S600. Fuel economy is, as expected, superior in the S550. It's rated at 16 city, 24 highway and 19 combined as opposed to 13 city, 21 highway, and 16 combined. Visually, the two cars are identical save for a few badges. The V12 badge on the S600 is replaced with a 4Matic badge on the S550, and that's where things start to get murky. When you're spending six figures on a car, decisions become more emotional than practical. $25,000 is a lot of money, but there's a bigger difference between $25,000 and $50,000 than there is between $167,000 and $192,000. As stated, you don't buy these cars to drive. Performance needs to be merely adequate. A smooth, torquey V12 is likely preferable to a hairy-chested V8, refined as it may be. These cars will never touch redline, lest the passengers spill their champagne. Plus, that V12 badge is worth its weight in country club memberships. Driving an S550 is fine until an owner shows up at an event behind an S600.