Ventil zum Steuern von Flüssigkeiten

摘要

The invention relates to a valve for controlling liquids which cooperates with a liquid-filled membrane actuator (25) for operational purposes. A coupling area (26) included in the membrane actuator (25) is sealed by two membranes acting as separating walls. A filling valve (34) is provided in order to compensate for liquid losses arising from the pressure exerted on the membrane actuator (25). Said filling valve is arranged in an area of one (29) of the two membranes (28 or 29). Re-filling of the membrane actuator (25) is carried out via the filling valve (34) when the control valve (21) is in a closed position. Such filling enables further compensation of modifications in the length of the piezo-actuator (24), the valve or valve housing. The valve is designed for use in fuel-injection devices for automobile internal combustion engines.