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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-Maybach Pullman Guard is a limo with a bulletproof vest

As fabulously plush as the Mercedes-Maybach Pullman is, there is a certain class of individual for which luxury is only part of the equation. Oligarchs, dictators, kingpins of questionable businesses, and probably some legitimate world leaders all love luxury, but they sometimes face some hairy commutes that demand a bit more protection. For them, the answer to their luxury car needs is the armored Pullman Guard. The Mercedes-Maybach Pullman Guard tops the line of S-Class Guard models that also includes the Mercedes-Benz S600 Guard and the Mercedes-Maybach S600 Guard. Like the non-armored Pullman it packs loads of leather, seats with practically infinite adjustability, and redundant gauges for rear passengers. It is also by far the longest S-Class vehicle available, stretching more than 40 inches longer than the next-longest Mercedes-Maybach. This tremendous length allows the Pullman Guard to have four-passenger seating in the rear, with two seats facing two others. It's the perfect place to sign treaties or entertain diplomats. Or, if foreign affairs aren't your speed, it would also be a convenient place to carve up territory, issue ultimatums to enemies, and intimidate dissidents. The Pullman Guard was developed alongside the standard Pullman, and because of that, the added armor does not sacrifice interior space. The armor does affect weight, though. The Pullman Guard weighs over 11,000 pounds. But, in return, the steel plates on the sides and floor, non-Kevlar-brand high-strength fabrics, and polycarbonate-backed windows protect occupants from bullets and explosives. Plus, the Pullman Guard features a twin-turbo V12 that produces 530 horsepower and 612 lb-ft of torque to haul the added ballast around. If a recognized authority is ordering a Pullman Guard, Mercedes also offers sirens, flashing lights, two-way radios, an emergency starter battery, and a loudspeaker system. These items are sure to be useful when trying to navigate seas of protestors in the streets. All of this extra protection will cost you though, and if you have to ask, you definitely can't afford it. But we'll tell you the price anyway. A standard Pullman will run around $500,000 at current exchange rates. For the Guard model, be prepared to shell out about $1.56 million. It's a steep price for sure, but for those whose pampered lives are in danger, it's probably worth it.

Geely wants to be a tech-sharing 'friend' of Daimler in $9B bet

Chinese carmaker Geely has built up an almost 10-percent stake in Daimler in a $9 billion bet by its chairman that he can access the Mercedes-Benz owner's technology in the growing battle for the future of automotives. The purchase by Li Shufu, Geely's founder and main owner, means China's largest privately-owned automaker is now the biggest shareholder in Germany's Daimler. Geely said on Saturday there were no plans "for the time being" to raise the stake further. Instead, it will seek to forge an alliance with Daimler, which is developing electric and self-driving vehicles, to respond to the challenge from new competitors such as Tesla, Google and Uber. "No current car industry player is likely to win this battle against the invaders from outside without friends. To achieve and assert technological leadership, one has to adapt a new way of thinking in terms of sharing and combining strength. My investment in Daimler reflects this vision," Li said. "Daimler is pleased to announce that with Li Shufu it could win another long-term orientated shareholder, which is convinced by Daimler's innovation strength, strategy and future potential," the German company said in a statement. Geely officials plan to travel to Stuttgart to meet Daimler executives early next week and also hope to meet top German government officials in Berlin, two sources familiar with the matter told Reuters. The Chinese firm plans to use the meetings to underline that it intends to be a supportive long-term investor, they said. Daimler had no immediate comment on any meetings. Geely and the German economy ministry declined to comment. Chinese investors in German technology companies have tended to take a consensual approach, buying incremental stakes in companies such as robotics firms Kuka and Kion, typically after long consultation with management and other stakeholders. In November, Geely asked Daimler to issue new shares so it could buy a stake, as a way to access Mercedes-Benz technology for electric cars and trucks, including battery technology, to help Geely comply with a Chinese crackdown on pollution. But the German company turned down the offer saying it did not want to dilute existing shareholders, sources at the time told Reuters. Li changed tactics, and quietly amassed a stake of 9.69 percent worth $9 billion at Daimler's current share price.