Pressure equalizing valve for a fuel tank or secondary fluid tank on a motor vehicle

摘要

The invention relates to a pressure equalizing valve (5) for a fuel tank or secondary fluid tank on a motor vehicle, comprising at least one valve housing (10), at least one valve body movably arranged in the valve housing (10), at least one venting opening on the tank side and on the connection side or on the atmosphere side, which form a venting path (16) which may be opened or closed by the valve body depending on the position of the tank, when a predetermined transverse force is exceeded relative to a normal force which holds the valve body in a valve seat, the valve body being able to be lifted or deflected from the valve seat and thus opening the venting path (16) and when falling below said transverse force automatically adopting again the position closing the venting path (16). The valve body is configured as a ball (15) and arranged so that when pressure prevails on the tank side, said valve body is held in the valve seat.

主权项

1. A pressure equalizing valve for a fuel tank or secondary fluid tank on a motor vehicle, comprising:
at least one valve housing, at least one valve body movably arranged in the valve housing, at least one venting opening on a tank side, wherein the at least one valve housing, the at least one valve body and the at least one venting opening form a venting path openable or closeable by the valve body such that, when a predetermined transverse force is exceeded relative to a normal force which holds the valve body in a valve seat, the valve body is liftable or deflectable from the valve seat to open the venting path and, when falling below said transverse force, the valve body is automatically positionable in the valve seat to close the venting path, wherein the valve body is arranged so that excess pressure on the tank side acts hydraulically on the valve body, such that said valve body is pressed onto the valve seat, and wherein in the valve housing only one venting path is provided, which in a resting position and a horizontal position of the vehicle and/or of the tank in an installed position, is closed by the valve body.