Hyundai Electric Vehicles Boost Range with Innovative Air Skirt

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In a move to enhance the efficiency of their electric vehicles, Hyundai and Kia have unveiled a cutting-edge technology known as the Active Air Skirt (AAS). This innovative system is strategically designed to minimize aerodynamic resistance during high-speed driving, ultimately improving the driving range and stability of battery-powered cars.

How AAS Operates: AAS operates by intelligently controlling the airflow entering through the lower part of the bumper. The system adeptly manages turbulence generated around the vehicle wheels, making variable adjustments corresponding to the vehicle’s speed during high-speed driving. Positioned discreetly between the front bumper and the front wheels, the system remains concealed during normal operation but becomes active at speeds exceeding 50 miles per hour when aerodynamic resistance surpasses rolling resistance. The system reverts to its stowed position at around 43 mph, strategically avoiding frequent operation within specific speed ranges.

Tailored Approach for Improved Performance: AAS adopts a tailored approach by selectively covering only the front part of the tires, rather than completely concealing the entire front. This approach, as explained by the South Korean automakers, proves to be more effective in enhancing aerodynamic performance, especially considering the flat platform floor of the E-GMP platform. Moreover, this partial coverage contributes to increased downforce, enhancing vehicle traction and high-speed stability.

High-Speed Operation and Durability: Remarkably, AAS is designed to operate even at speeds exceeding 124 mph, thanks to the application of rubber material on the lower part. This material not only reduces the risk of external objects causing damage while driving at high speeds but also ensures the durability of the system.

Test Results and Range Enhancement: Hyundai and Kia have conducted tests, revealing a reduction in the drag coefficient (Cd) by 0.008 upon installing AAS in the Genesis GV60. This improvement translates to a 2.8 percent enhancement in drag, estimated to yield an additional range improvement of approximately 3.7 miles. This breakthrough showcases the potential of AAS to revolutionize electric vehicle performance and contribute to the ongoing advancements in automotive technology.

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