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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.

2016 Malaysian Grand Prix recap: Surprises and missed opportunities

Mercedes-AMG Petronas pilot Lewis Hamilton drove so well in the run-up to the Malaysian Grand Prix that he said before the race, "Honestly, I don't feel anything is going to stop us." On Sunday, the Sepang race showed what it thought of plans and predictions. Heading into the right-hand Turn 1, Sebastian Vettel practically recreated the dust-up at the Belgian Grand Prix three races ago. When Mercedes' Nico Rosberg swept across from the outside line toward the apex, Red Bull's Max Verstappen had to jink right to avoid, touching Vettel's Ferrari on the inside. Vettel speared straight on and hit Rosberg. Vettel's left front suspension broke, ending his race. Rosberg spun and got moving again, but at the back of the pack. That appeared to put Hamilton on a clear run to the checkered flag. His car looked perfect, his pace was perfect, he easily kept Red Bull's Daniel Ricciardo and Verstappen behind. A result that would have seen Hamilton retake control of the Driver's Championship – at Petronas' home race – got crushed on Lap 41 when Hamilton's engine blew down the main straight. That put Ricciardo in the lead, followed closely by his teammate. Just two laps before Hamilton's exit, Ricciardo and Verstappen had battled for second place with some of the best driving we've seen all season. Ricciardo drove as if exorcising the demons of missed opportunities earlier in the year, keeping the young Dutchman behind. The two Red Bulls took the flag fifteen laps later in that order, clocking the first one-two finish for a team other than Mercedes since 2014. It's Red Bull's first one-two since Brazil 2013, when Vettel and Mark Weber took the top steps at the last race of the V8 era. Rosberg recovered to take third in spite of a ten-second penalty for an optimistic pass on Ferrari's Kimi Raikkonen. The Finn crossed the line 12 seconds later, followed by Valtteri Bottas in the Williams and Sergio Perez in the Force India. In another Belgium repeat, Fernando Alonso drove from the back of the grid to finish seventh. Nico Hulkenberg secured eighth, Jenson Button ninth for McLaren in his 300th grand prix, and rookie Jolyon Palmer scored his first point of the season for Renault in tenth. The issue to trump all others from now until next week's Japanese Grand Prix: Lewis Hamilton's terrible luck with engines. Power unit gremlins earlier this season helped drop the Brit to 43 points behind Rosberg after the Russian Grand Prix.

2014 Mercedes-Benz B-Class ED has 87-mile range, 84 MPGe

Well, that extra weight had to be felt somewhere. With Mercedes-Benz getting ready to start US sales of its B-Class Electric drive this summer, the big question was how well its range would stack up against other electric vehicles sold in the States. Turns out, the Benz is a bit of a juice hog. Let's say up front that the 87-mile single-charge range of the Mercedes-Benz actually stacks up nicely against its competition, since that distance puts the new model right in line with the Nissan Leaf and BMW i3 (we'll ignore the Tesla Model S for a second, here). You can find the numbers at the US Department of Energy's FuelEconomy website. As far as miles per gallon equivalent ratings, though, the Benz's steel frame makes it come up short, as it's about 1,300 pounds heavier than the carbon-fiber-body i3 and about 600 pounds heavier than the Leaf. The B-Class EV has a bigger battery than the i3 or the Leaf (36 kWh compared to 22 kWh for the i3 and 24 kWh for the Leaf) and that's one reason the car gets an 84 MPGe rating, which is about 26 percent less than the Leaf's and 32 percent less than the i3's. But at least the local utility companies will be happy. Mercedes-Benz priced the 177-horsepower B-Class ED in April at $41,450, or $100 more than the i3. Check out Autoblog's First Drive impressions here.