PIEZOELECTRIC ACTUATOR AND METHOD FOR PRODUCING A PIEZOELECTRIC ACTUATOR

PIEZOELECTRIC ACTUATOR AND METHOD FOR PRODUCING A PIEZOELECTRIC ACTUATOR

The invention relates to a piezoelectric actuator (2), particularly for fuel injection valves, having an actuator body (15). The actuator body (15) comprises a plurality of ceramic layers (16 to 22), and a plurality of electrode layers (23 to 28) arranged between the ceramic layers (16 to 22). A fir...

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Bibliographische Detailangaben
Hauptverfasser: HEJTMANN, GEORG, GRIESSL, ANJA, LINDNER, FRIEDERIKE, ESCHENBACHER, COSIMA, SPREMO, IVAN, HENNECK, STEFAN, GUENTHER, MICHAEL
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
ELECTRICITY
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Beschreibung
Zusammenfassung:The invention relates to a piezoelectric actuator (2), particularly for fuel injection valves, having an actuator body (15). The actuator body (15) comprises a plurality of ceramic layers (16 to 22), and a plurality of electrode layers (23 to 28) arranged between the ceramic layers (16 to 22). A first ceramic layer (17) is formed by a first pre-sintered ceramic disk (41). Furthermore, a second ceramic layer (18) is formed by a second pre-sintered ceramic disk (41 "). The ceramic layer (17) formed by the first ceramic disk (41), and the ceramic layer (18) formed by the second ceramic disk (41 ") are interconnected by an electrode layer (24) provided between the ceramic layers (17, 18), wherein said electrode layer (24) is made of a metal paste (45).