Dosierventil für ein unter Druck stehendes Fluid

A metering or proportioning valve for a fluid (a liquid or a gas) has a housing (2) with a valve cavity (18) for receiving a valve needle (7) which forms a valve with the housing wall. An actuator cavity (17) is provided for accommodating the piezo- actuator (4) in which a hydraulic piston (1) suppo...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	GOTTLIEB, BERNHARD, KENDLBACHER, CHRISTOPH, KAPPEL, ANDREAS
Format:	Patent
Sprache:	ger
Schlagworte:	ACTUATING-FLOATS BLASTING COCKS COMBUSTION ENGINES CONVERSION OR DISTRIBUTION OF ELECTRIC POWER DEVICES FOR VENTING OR AERATING ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR ELECTRICITY ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS GENERATION HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS LIGHTING MECHANICAL ENGINEERING SUPPLYING COMBUSTION ENGINES IN GENERAL, WITH COMBUSTIBLEMIXTURES OR CONSTITUENTS THEREOF TAPS THERMAL INSULATION IN GENERAL VALVES WEAPONS
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Beschreibung
Zusammenfassung:	A metering or proportioning valve for a fluid (a liquid or a gas) has a housing (2) with a valve cavity (18) for receiving a valve needle (7) which forms a valve with the housing wall. An actuator cavity (17) is provided for accommodating the piezo- actuator (4) in which a hydraulic piston (1) supports the piezo- actuator (4) on the side facing away from the valve needle (7). An equalisation cavity (13) is joined to the hydraulic chamber (3), both being filled with a pressurised hydraulic fluid, the join being formed by a throttle or restriction diaphragm (12) or by the combination of a packed sealing gap (21) with an equalising/balancing boring (20), such that the system, hydraulic chamber- equalising cavity- hydraulic fluid, forms a dynamically rigid bearing for the piezo-actuator and a length equalising element for more protracted processes.