Hyundai Motor Company and Kia Corporation break new ground with their latest innovation, the ‘Active Air Skirt’ (AAS) technology. This state-of-the-art system revolutionizes electric vehicle (EV) dynamics by significantly reducing aerodynamic resistance at high speeds, thereby boosting range and enhancing stability.
At the core of AAS technology is a sophisticated airflow control mechanism situated at the vehicle’s lower bumper area. This design is pivotal in diminishing turbulence around the wheels, becoming increasingly effective as the vehicle accelerates. Such innovation is crucial in the EV sector, where achieving optimal range from a single charge is a paramount challenge.
Strategically positioned between the front bumper and wheels, AAS remains discreet during standard operation. It springs into action above 80 kilometers per hour, a threshold where aerodynamic resistance overtakes rolling resistance and retracts at 70 kilometers per hour to avoid redundant activation.
Tailored for Hyundai Motor Group’s Electric-Global Modular Platform (E-GMP), AAS targets the front portion of the tires. This selective coverage aligns with the platform’s flat floor architecture, optimizing aerodynamics and enhancing downforce, thus bolstering traction and stability at high speeds.
AAS demonstrates its prowess even beyond 200 kilometers per hour, thanks to robust rubber materials that resist damage from high-speed debris and ensure longevity.
Testing on the Genesis GV60 with AAS installed yielded a reduction in drag coefficient (Cd) by 0.008, equivalent to a 2.8% drag efficiency boost. This advancement translates to a potential range increase of around 6 kilometers.
Hyundai Motor and Kia have secured patents for AAS in South Korea and the United States, with plans for mass production following rigorous durability and performance testing.
Sun Hyung Cho, Vice-President and Head of the Mobility Body Development Group at Hyundai Motor Group, underscores the significance of AAS, particularly for SUVs where aerodynamic enhancement is challenging. Cho reaffirms the commitment to elevating EV performance through aerodynamic advancements.
Complementing AAS, Hyundai Motor and Kia have incorporated a suite of aerodynamic technologies in their vehicles, including rear spoilers, active air flaps, and wheel air curtains. These efforts have propelled the Hyundai Ioniq 6 to a global leading Cd of 0.21, underscoring the companies’ relentless pursuit of excellence in EV technology and performance.
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