Hyundai Motor Enhances EV Performance with Innovative 'Active Air Skirt' Technology

Hyundai Motor Company has recently introduced the 'Active Air Skirt' (AAS) technology, a significant development in the field of electric vehicle (EV) aerodynamics. The AAS is designed to minimize aerodynamic resistance during high-speed driving, thereby enhancing the driving range and stability of EVs.

'Active Air Skirt' Technology

The primary function of AAS is to manage the air flow entering through the lower part of the bumper. This technology is specifically designed to control the turbulence around the vehicle's wheels during high-speed travel. The AAS operates variably depending on the vehicle's speed, engaging at speeds over 80 km/h when aerodynamic resistance surpasses the rolling resistance. It retracts once the vehicle slows down to 70 km/h. This differential in deployment and retraction speeds is intended to avoid frequent activation within certain speed ranges.

The installation of the AAS between the front bumper and front wheels is strategic. When not in operation, it remains concealed. This design is particularly effective for Hyundai Motor's Electric-Global Modular Platform (E-GMP) for EVs, where a flat platform floor already exists. The technology's operation at speeds over 200 km/h is enabled by incorporating durable rubber material, reducing damage risk from external objects at high velocities.

Enhanced Downforce and Traction

Hyundai Motor has tailored the AAS technology to enhance the aerodynamic performance of its EVs. Unlike a full frontal coverage, the AAS is positioned only in front of the tires. This placement significantly improves the vehicle's aerodynamics by enhancing downforce, which is crucial for better traction and stability at high speeds. The impact of this technology is substantial in reducing the coefficient of drag (Cd) — the resistance coefficient of air acting against the vehicle’s motion.

Hyundai Motor's focus extends beyond AAS to other aerodynamic technologies such as rear spoilers, active air flaps, and wheel air curtains. The Hyundai IONIQ 6, featuring these technologies, achieved a remarkable global leading Cd of 0.21. These developments underscore Hyundai Motor's dedication to optimizing the driving performance and stability of EVs through aerodynamic improvements, setting a new benchmark in EV technology.

In conclusion, Hyundai Motor's Active Air Skirt technology represents a significant step forward in the evolution of electric vehicle design. By effectively managing air turbulence and enhancing downforce, the AAS improves both the efficiency and stability of EVs, particularly at high speeds. With ongoing tests and potential mass production in sight, Hyundai Motor continues to demonstrate its commitment to innovation in the electric vehicle sector.