Piezoactuator for actuating injection valve in motor vehicle, has longitudinal axis and piezoelectric layers which are arranged to stack in stack direction

摘要

The piezoactuator (1) has a longitudinal axis and piezoelectric layers (2,3) which are arranged to a stack in stack direction. The stack direction runs perpendicular to longitudinal axis of the piezoactuator. The polarization directions of the piezoelectric layers enclose an angle smaller than 45 degree with the longitudinal axis of the piezoactuator. Electrode patterns (7,8) are arranged between the piezoelectric layers, where one electrode pattern is divided into multiple electrode strands.