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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.

2021 Mercedes-Maybach GLS 600 is business class without the jet lag

Mercedes-AMG demonstrated how sporty a mammoth SUV can be by unveiling the 2021 GLS 63 S at the 2019 Los Angeles Auto Show. Across the Pacific, at the Guangzhou auto show in China, Mercedes-Maybach revealed another GLS variant that puts an unabashed focus on comfort. The 2021 GLS 600 ends years of rumors by finally taking Maybach into the SUV segment. (If you don't count the limited-edition G 650 Landaulet). It's not a standalone model developed from the ground up, and it's in no way related to the electric Vision Mercedes-Maybach Ultimate Luxury concept introduced in 2018. It's a second-generation GLS dressed up in a Hugo Boss suit. Stylists spruced up the front end with Maybach's chromed waterfall grille and mesh inserts in the lower part of the bumper. An abundance of chrome trim (including big slabs of it in on the B-pillars) and Maybach emblems on the D-pillars further set the SUV apart from its non-Maybach-badged sibling. Buyers can order a two-tone paint job at an extra cost. 6.8-foot-long running boards automatically extend from under the body about a second after one of the passengers opens a door. Designers took advantage of the cavernous interior to replace the second- and third-row seats with a pair of business class-like chairs that offer heated, ventilated, massaging and reclining functions. Maybach developed the GLS with chauffeur-driven buyers in mind, so the passengers traveling in the back benefit from their own infotainment system with wireless headphones, folding tablets, wireless device chargers, plus heated and cooled cupholders. Alternatively, buyers can order the GLS as a five-seater with a three-person rear bench. The GLS 600 receives the twin-turbocharged, 4.0-liter V8 engine that's omnipresent in the Mercedes range. It delivers 550 horsepower from 6,000 to 6,500 rpm and 538 pound-feet of torque between 2,500 and 5,000 rpm in this application, and it spins the four wheels via a nine-speed automatic transmission and 4Matic all-wheel drive. Mercedes pegs its zero-to-60-mph time at 4.8 seconds. The standard 48-volt mild hybrid system briefly gives the GLS 600 an additional 21 horsepower and 184 pound-feet of torque. It also sends the kinetic energy it recuperates to the battery pack while braking or coasting, and powers a technology named E-Active Body Control which scans the road ahead and adjusts the suspension as needed if it detects a pothole, a bump or another obstacle.

2015 Monaco F1 Grand Prix race recap [spoilers]

Lewis Hamilton came to Monaco with a new three-year deal with Mercedes-AMG Petronas and a vow to not let anything, including any "mistakes" by teammate Nico Rosberg, stand in the way of his best qualifying effort. Mercedes reportedly made it rain with a 100-million-pound deal, and Hamilton made it rain right back with his first pole position at Monaco. Rosberg did make a mistake but this time it was behind Hamilton, which meant he stuffed-up the qualifying attempts of rival drivers like Sebastian Vettel. So Rosberg starts second, 0.342 behind Hamilton but 0.449 ahead of Vettel in the Ferrari. Daniel Ricciardo thinks he should have been third, but a communication error with his engineers left him in the wrong engine setting for his final hot lap, so by the very first corner he'd lost the time he would have needed to get higher than fourth on the grid. The second Infiniti Red Bull Racing of Daniil Kvyat slots in behind him, ahead of the second Ferrari of Kimi "Not A Very Happy Day" Raikkonen, who just can't get it going lately. Sergio Perez did for the Sahara Force India what the car can't do on its own, which is grab a top-ten qualifying spot. Toro Rosso rookie Carlos Sainz had qualified eighth but missed a call to the weigh bridge, so he's been slapped into the pit lane. Pastor Maldonado in the Lotus inherits his eighth place, ahead of rookie Max Verstappen in the second Toro Rosso, and Jenson Button in the McLaren. Button only got up there because of two penalties: for Sainz, and Romain Grosjean who had qualified 11th but took a penalty for a gearbox change. Want to know how hard it is to do better on race day than in qualifying at Monaco? Even the never-say-die Fernando Alonso said, "Monte Carlo is a train of cars on Sunday, the race finishes on Saturday afternoon." Well obviously, he didn't take Max Verstappen's seek-and-destroy tactics into account. The young Dutchman had made passing look like a real option in Monaco, getting past Maldonado at St. Devote on Lap 7 after a bit of argy-bargy on Lap 6, then taking advantage of blue flags to slink past teammate Carlos Sainz and Williams driver Valtteri Bottas while hiding in Sebastian Vettel's slipstream. He tried the same move on Romain Grosjean on Lap 65, but Grosjean locked him out. Verstappen lined up the Lotus driver over the following laps, then looked like he slipped to the inside at St.