Siemens Aktiengesellschaft

Johannes Fitzner

Dirk Baranowski

Gerd Schmutzler

Stefan Lehmann

Raimondo Giavi

Karl Kirchweger

J&uuml;rgen Rink

G&uuml;nter Lewentz

Wendelin Kl&uuml;gl

Hinrich Kr&uuml;ger

Jurgen Rink

A device for transmitting a deflection of a piezoelectric actuator to a movable tappet includes a pressure chamber between the piezoelectric actuator and the tappet. The pressure chamber is substantially formed by two mutually parallel diaphragms having effective radii of different lengths. The diaphragm with the longer radius is associated with the piezoelectric actuator and the diaphragm with the shorter radius is associated with the tappet. Therefore, upon a deflection of the first diaphragm by the piezoelectric actuator, the second diaphragm is deflected by a greater distance toward the tappet. A controller with an actuator having a controllable length is also provided.

Controller with an actuator of controllable length and device for transmitting the deflection of an actuator

A compensating element is disposed between a piezoelectric actuator and one or more transmission elements. The compensating element has a curved surface that bears against the piezoelectric actuator. The compensating element compensates for both a tilting of the piezoelectric actuator and, if two transmission elements are provided, for a difference in an overall height of the transmission elements.

Injection valve with a compensating surface

A mechanical force transmitter converts the deformation of a piezoelectric actuator into a linear movement of a final control element. The transmission is via configuration of two mutually inclined working surfaces and a movable mechanical element disposed between the inclined working surfaces.

Device for transmitting a deflection of an actuator

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Bernhardswald, Germany

Johannes Fitzner