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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.

Race recap: 2016 Belgian Grand Prix is a dozen angry laps

The calm of the Formula One summer break ended with the tumult of the Belgian Grand Prix. The first two days included unusual tire pressures and grid penalties; Mercedes-AMG Petronas' Lewis Hamilton started 21st because of a 55-place grid penalty for engine and gearbox changes, McLaren's Fernando Alonso started 22nd due to a 60-place penalty for the same offenses. The bedlam rolled right into what was effectively an 11-or 12-lap race. Mercedes driver Nico Rosberg took off from pole and the cameras barely bothered with him until he took the checkered flag 44 laps later. Red Bull's Max Verstappen bogged from second on the grid, got swallowed by Ferrari's Sebastian Vettel and Kimi Raikkonen on the way to Turn 1, then attempted to recover by sticking his Red Bull's nose between Raikkonen's sidepod and the apex at the first corner. Vettel, who didn't see Verstappen, turned into La Source leaving only enough room for Raikkonen. Three cars don't fit in a space for two cars. Vettel spun, Raikkonen and Verstappen clobbered one another and all three drivers had to pit for repairs. Force India's Nico Hulkenberg zig-zagged his way into second ahead of Red Bull's Daniel Ricciardo, Williams' Valtteri Bottas, and Sergio Perez in the second Force India. On Lap 6 Kevin Magnussen lost his Renault at Raidillon at the top of Eau Rouge and flew backward into an enormous crash. Magnussen escaped with just a cut ankle. The Safety Car paraded the field for four laps before officials red flagged the race to repair the barriers. When racing resumed on Lap 10, Rosberg led Ricciardo, Hulkenberg, Alonso, and Hamilton. Ricciardo stayed ahead of Hamilton to keep second place at the end of the race, Hamilton easily got around Alonso and Hulkenberg to lock up third. Hulkenberg – who'd given up second to Ricciardo by pitting during the Safety Car period – earned another career-best fourth position ahead of teammate Perez in fifth, followed by Vettel and Alonso on recovery drives, Bottas, Raikkonen, and Felipe Massa taking 10th in the second Williams. Rosberg reignited his Driver's Championship charge with the victory, closing to nine points of leader Hamilton. We could argue that Hamilton had an equally good day by driving from 21st to third, limiting his loss to only 10 points. About that Verstappen, though... We've seen far more experienced drivers attempt the same move Verstappen made into Turn 1 – Raikkonen on Bottas in Russia in 2015, for instance.

Recharge Wrap-up: new Gigafactory drone video, Mercedes valet

A new, Tesla-approved drone video shows the progress of the Gigafactory. Recently, a video surfaced showing what Elon Musk said was just the "pilot plant," which is only a quarter of the size of the final planned Gigafactory. This new video not only shows the structure, but also the site surrounding it. We see more steel beams waiting to be erected, suggesting that the footprint of the finished building will be even more massive than that of the current standing structure. And if what Musk says is accurate, we've got a lot more to look forward to. Have a look in the video above, and read more at Teslarati. Tesla is paying hackers to find bugs in its website and products. In a posting on Bugcrowd, the electric automaker calls on "security researchers" to find vulnerabilities in the site itself, any domains owned by Tesla, any Tesla apps as well as Tesla hardware owned by the hacker like a Model S or the Powerwall. In exchange for the hackers' service, Tesla is offering rewards ranging from $25 to $1,000 for reported vulnerabilities. Tesla also promises not to sic the law enforcement on hackers who step forward to help, as long as they follow the rules. Read more at Teslarati. Daimler and Bosch are working on automated parking for Mercedes-Benz. In a properly equipped parking garage, the car would find an empty space and park by itself, and return to the driver when called upon. The groups are starting a pilot project for the autonomous valet feature with carsharing service Car2go, where it works the other way around. Customers will be able to call a car to a pick-up zone using a mobile app. When finished, the customer leaves the car in the drop-off zone, and the car takes care of the rest on its own. "Fully automated parking will be ready for mass-production before fully automated driving," says Bosch's Dr. Dirk Hoheisel. "Low driving speeds and the information from the car park infrastructure enable a fast implementation." Read more in the press release from Daimler. Volta has raised $7.5 million in funding to expand its free EV charging network. To offer free charging, Volta's chargers essentially perform double duty as billboards for what Volta calls "companies with a vested interest in the community." "Early Internet pioneers like Google became industry titans by first offering free consumer services online paid for by companies that advertised on their platforms," says Volta CEO Scott Mercer.