Air curtain – in the lateral extremities of the front bumper, a well-defined space is created thus allowing air to pass from the front of the bumper towards the wheel housing. The passing airflow from the engine compartment towards the exterior of the wheel, which increases drag, is optimized by the high velocity air stream that flushes the exterior of the wheel. An extension of this solution is to add air curtains after the wheel, allowing an easier evacuation of engine compartment flow for a better equilibrium of pressures.
