Valve for use in venting system for ventilation of crank case of combustion engine, has auxiliary membrane and bar provided for producing force on flexibly movable tax control membrane as function of difference of pressure

摘要

The valve (1) has a flexibly movable tax control membrane (12) arranged at a housing (2) and provided for closing or opening a valve opening (6). An auxiliary membrane (14) and a bar (19) are provided for producing a force on the membrane (12) as a function of a difference of pressure between the pressure applied to the valve at an inlet side and the pressure caused in a valve interior space of the membrane (12) such that the force exercised by the membrane (14) and the bar on the membrane (12) becomes larger against a closing direction of the valve.