Laminated piezoelectric element, and injection device and fuel injection system provided with same
AssigneeKYOCERA Corporation
InventorYasuhiro ASAKURA
Life of this patent
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Abstract
There are provided a laminated piezoelectric element in which a stress applied to an interface between a cover layer and a stacked body is reduced, and an injection device and a fuel injection system provided with the laminated piezoelectric element. A laminated piezoelectric element includes a stacked body in which piezoelectric layers and internal electrode layers are alternately laminated; and a cover layer disposed so as to surround a side face of the stacked body, and the cover layer has a two-layer structure with an annular boundary when viewed in a section perpendicular to a stacking direction of the stacked body.
Claims8
A laminated piezoelectric element comprising:
- a stacked body in which piezoelectric layers and internal electrode layers are alternately laminated;
- and
- a cover layer disposed so as to surround a side face of the stacked body,
- the cover layer having a two-layer structure with an annular boundary when viewed in a section perpendicular to a stacking direction of the stacked body.
Dependencies are inferred from the claim text.