Audi achieves pioneering attainment with e-tron quattro four-wheel drive

In 2012, Audi became a initial manufacturer to win a Le Mans 24 Hours and a FIA World Endurance Championship (WEC) with a four-wheel-drive LMP1 sports car. Equipped with a innovative e-tron quattro four-wheel drive, a R18 has won 10 WEC rounds to date including a 2012 and 2013 Le Mans 24 Hours and a WEC World Champion’s titles in a same years. In 2014, for a initial time, Audi’s two  LMP1 challengers on a manufacturers’ side are also relying on LMP1 sports prototypes with four-wheel drive.

“Innovations usually turn pioneering achievements when they’re successfully used and others start to adopt them,” says Head of Audi Motorsport Dr. Wolfgang Ullrich. “Audi, like no other manufacturer, has regularly achieved such feats ever given a entrance of quattro four-wheel expostulate in 1980.” In a DTM, as well, Audi was a initial group in 1990 to use four-wheel expostulate in racing, usually like in Super Touring Cars, starting in 1993. In a past dual years, on achieving a fibre of success in a WEC, a code valid that e-tron quattro – a multiple of a hybrid complement with four-wheel expostulate – offers poignant advantages.

Up to now, Audi had been authorised to use four-wheel expostulate usually above 120 km/h. But 4 driven wheels guarantee to broach traction advantages quite during low speed, for instance when a motorist accelerates on exiting a parsimonious corner. This year, this speed-related order no longer applies.  

A essentially new Motor Generator Unit (MGU), together with a differential, sits in a monocoque during a turn of a front axle. Two expostulate shafts bond a complement with a front wheels. Under braking, a kinetic appetite of a competition automobile is converted into electric stream that flows into an optimized flywheel appetite storage device located in a cockpit subsequent to a driver. During acceleration, a recovered appetite is converted again by a MGU and powers a front wheels.

“We’ve grown a whole hybrid expostulate from blemish again for 2014,” explains Dr. Martin Mühlmeier, Head of Technology during Audi Sport. “Specifically, it’s turn even lighter and some-more fit than before.” As of 2014, a singular e-machine connected to a front-axle differential is longitudinally mounted. Furthermore, these front-wheel expostulate components are totally integrated into a monocoque of a R18 e-tron quattro. The recuperated appetite is stored in a newly designed flywheel appetite storage system.

While a quattro systems of Audi’s factory-fielded convene models and furloughed cars between 1980 and 1997 used a automatic tie in a form of a expostulate missile between a front and back axles, a appetite placement to a front and back wheels in a e-tron quattro four-wheel expostulate complement is governed particularly by an electronic control unit. In addition, due to a new potency regulations, a mutated plan for a engine and expostulate complement will be used in 2014. The e-tron quattro four-wheel expostulate with a worldly appetite upsurge is characterized by best efficiency.  

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Note to editors: Every Monday until a Le Mans competition on Jun 14/15, we will be providing we with new credentials information on a R18 plan and Audi’s joining in a world’s many famous continuation race. Next week’s topic: a LMP partners.