30 May '18, 3pm

#Audi: #e-tron prototype drag coefficient of 0.28 contributes to 400 km range; virtual mirrors and dimples

#Audi: #e-tron prototype drag coefficient of 0.28 contributes to 400 km range; virtual mirrors and dimples

Audi’s e-tron prototype, the forerunner of its coming series-production battery-electric SUV, features a drag coefficient of 0.28—a top result in the SUV segment. The figure is a decisive factor in the everyday range of more than 400 kilometers (248.5 mi) in the WLTP cycle; a hundredth of the drag coefficient figure represents a range of around five kilometers (3.1 mi) driving under everyday conditions, Audi says. On the aeroacoustics test rig in the Wind Tunnel Center in Ingolstadt—the world’s quietest vehicle wind tunnel—Audi engineers optimize drag and noise under extreme conditions. With an output of 2.6 MW, the fan produces speeds of up to 300 km/h (186.4 mph). The Audi e-tron prototype was put through more than 1,000 hours of testing here. To achieve the drag coefficient of 0.28, the Audi engineers developed a wide range of aerodynamics measures in all body areas. So...

Full article: http://www.greencarcongress.com/2018/05/20180530-audi.html

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