Hyundai Motor Company and Kia Corporation have introduced the 'Active Air Skirt' (AAS), aimed at maximising the driving range and stability of electric vehicles (EVs) by minimising aerodynamic resistance during high-speed driving.
AAS is a sophisticated system designed to regulate the airflow beneath the vehicle, effectively managing turbulence generated around the wheels based on the vehicle's speed during high-speed driving. Positioned discreetly between the front bumper and the front wheels, AAS remains concealed during regular operation but springs into action at speeds exceeding 80 kmph when aerodynamic resistance surpasses rolling resistance. It retracts at 70 kmph, preventing unnecessary activation within specific speed ranges.
This strategic placement enhances downforce, improving vehicle traction and high-speed stability. AAS is capable of operating at speeds over 200 kmph, thanks to its rubber material application, ensuring durability and protection against external objects at high speeds.
Tests conducted on the Genesis GV60 demonstrated a notable reduction in the drag coefficient (Cd) by 0.008, translating to a 2.8 percent improvement in drag. This improvement is estimated to extend the driving range of electric vehicles by approximately 6 km. Hyundai Motor and Kia have applied for patents in South Korea and the United States and plan to explore mass production after thorough durability and performance testing.
Sun Hyung Cho, Vice President and Head of Mobility Body Development Group at Hyundai Motor Group, emphasized the potential impact of this technology on SUVs, where enhancing aerodynamic performance is particularly challenging. Cho stated, 'We will continue to strive to improve the driving performance and stability of electric vehicles through improvements in aerodynamics.'
In their pursuit of competitive drag coefficients, Hyundai Motor and Kia are incorporating various technologies, including rear spoilers, active air flaps, wheel air curtains, wheel gap reducers, and separation traps. The Hyundai IONIQ 6, featuring these technologies, has achieved a global-leading Cd of 0.21, showcasing the brands' commitment to advancing electric vehicle capabilities.
Also Read
Hyundai Motor India Acquires GM’s Talegaon Plant, Signs INR 6k Cr MoU With Maharashtra Govt