Audi again teased it’s E-Tron prototype & know revealed it’s aerodynamics result. The production ready prototype has lowest drag coefficient of 0.28 & these one a top result in the SUV segment. So, lets check –
Audi E-Tron prototype achieve these drag coefficient by engineers developed a wide range of aerodynamics measures in all body areas. It’s drag coefficient is 0.07 less than conventionally powered vehicle.
The typical usage profile this set-up increases the range by around 35 kilometers per battery charge in the WLTP cycle. Audi E-Tron tested in Wind Tunnel Center in Ingolstadt which is the world’s quietest vehicle wind tunnel & Audi engineers optimize drag and noise under extreme conditions.
Audi do a brutal testing & company say E-Tron prototype go through over a 1,000 hours of testing plus an output of 2.6 megawatts, the fan produces speeds of up to 300 km/h. The high range of more than 400 kilometers in the WLTP cycle. A hundredth of the drag coefficient figure represents a range of around 5 kilometers driving under everyday conditions.
There is optional virtual exterior mirrors which reduce the vehicle width by 15 centimeters & thanks to their new shape, not only reduce drag, but also noticeably cut the nonetheless low wind noise. Audi put flat supported integrated small camera that captured images appear on OLED displays in the transition between the instrument panel plus door.
Audi virtual exterior mirrors can be adapted for various driving situations, thus potentially improving safety. Three views are available in the MMI system for highway driving, turning & parking. Major factor is standard adaptive air suspension a pneumatic suspension with adjustable damping at speeds above 120 km/h (74.6 mph), it lowers the body by up to 26 millimeter.
Here is some more important thing that company share –
The underbody of the all-electric SUV is fully enclosed; the front and rear area are fully paneled. Underneath the passenger cell, an aluminum plate protects the high-voltage battery against damage from below, such as stone chipping or curbs. Its bolting points come with bowl-shaped indentations, similar to the dimples on a golf ball. They make the air flow much better than a totally flat surface.
The controllable cool-air inlet – a frame behind the Singleframe with two electrically operated louvers – also helps lower drag. When shut, the air in this area flows with virtually no swirl. As soon as the drivetrain components need cooling or the air conditioning condenser requires ventilation, the top louver opens first and then both louvers. When the hydraulic wheel brakes are subject to high loads, the controllable cool-air inlet opens and releases two ducts which channel the cooling air into the front wheel arches to the brakes.
The side air inlets at the front of the Audi e-tron prototype incorporate additional ducts, which are clearly visible from outside, to the wheel arches. They channel the airstream so that it flows past the outside of the standard aerodynamically optimized 19-inch wheels. Their design is flatter than with conventional wheels. The 255/55 size tires stand out with their ultralow rolling resistance. Even the tire sidewalls add to the aerodynamic design – the lettering is negative instead of raised.