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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.

Highlights from the Goodwood Festival of Speed, including the McLaren P1 and a Ford Transit running the hill

The sole purpose of this post is as a time-waster, and since you shouldn't have to work to waste time, we've done it for you. In the numerous videos below you'll find cars that have lately been in the news tramping all over the grounds of Lord March's estate in Goodwood, England.
There's the McLaren P1 heading up the hill, the Jaguar Project 7, then a casually-driven Porsche 917 followed by an even-more-casually-driven Porsche 956, topped off by a Porsche 936 that is anything but casually driven. The next round is the flame-spitting Peugeot 405 T16 Pikes Peak from Climb Dance, a camera mounted on the Peugeot RCZ R after it showing you what the whole, uninterrupted run up the hill looks like. For a real head-turner, we couldn't embed it but there's Andy Reid blasting up the hill in a Ford Transit Supervan with a Cosworth 3000 V6 engine.
The modern racing contingent has Allan McNish doing the hill in the Audi R18 e-tron quattro he used to win Le Mans and Lewis Hamilton making lots of tire smoke in the Mercedes-AMG Petronas MGP-W02. For comparison, that's followed by Nick Heidfeld's record-setting run up the hill in 1999 in the McLaren MP4/14 . The classic racing contingent is headlined by 71-year-old Giacomo Agostini on an MV Agusta.

Porsche teams with Delta airlines to woo VIP passengers

The next time you're waiting for a flight at Hartsfield-Jackson Atlanta International Airport, see if you can spot a Porsche Cayenne or Panamera zipping between aircraft on the busy tarmac. The high-performance German vehicles aren't there practicing for an upcoming autocross; they are tasked with whisking some of the airline's most important customers between flights so they can keep their busy schedules intact.
Launched nearly two years ago, the program has proven popular with the automaker, airline and passengers as all benefit from the unique arrangement. Atlanta-based Porsche is able to showcase its cars to Delta's frequent-flying Medallion members, the airline is recognized for providing unusual perks to its high-value customers and those fortunate enough to be surprised with a quick lift are able to make connections without a stressful run through the terminal. Based on its success, the airline is rolling our similar programs in New York, Los Angeles and Minneapolis this month.
And don't think Porsche is the only automaker working with an airline to entice its frequent flyers. Mercedes-Benz ran a program over the summer that offered purchasing and leasing incentives to MileagePlus Premier members of United Airlines, and the two are currently shuttling top fliers around Houston's George Bush Intercontinental Airport in the automaker's S-Class and GL-Class models.