| 摘要 |
<p>The device (2) is oriented towards under portion (3) of vehicle (1). A flow path (4) is arranged towards road (B), and pivotable flap (5) is provided for varying air flow (L) during driving operation of vehicle. The air flow is maximum and minimum in second position, or zero in basic position. The flap is arranged in direction of basic position of spring force so that the air flow generates with increasing flow velocity and reinforcing negative pressure in road facing pressure zone on underside of flap. A negative pressure can pivot the flap against spring force. An independent claim is included for a motor vehicle.</p> |
