Device for reducing resistance and/or lift in vehicles

摘要

The device comprises a plurality of flow channels (1) which are bounded by a plurality of profile elements (3) which are directed downwards from the underside (2) of the vehicle with a symmetrical, droplet-shaped profile cross-section. Largely horizontal surface areas (4) of the underside (2) of the vehicle adjoin the profile elements (3) laterally. As a result of the expansion of the air after it flows through the narrowest cross-section (5) of the flow channels (1), the pressure is increased downstream of the profile elements (3) and the flow speed is reduced so that the losses in flow on the unevennesses of the underside (2) of the vehicle are reduced. Furthermore, in the region of the flow channels themselves a very low pressure is produced which affects the adjacent horizontal surface areas (4) and brings about a force directed towards the plane of the roadway. <IMAGE>