Procedure for positioning the actuating drive in a fuel injector and device for performing the procedure

An injection valve comprising

• an injection valve housing having;
• a piezoactuator, the piezoactuator having a piezoactuator housing with an opening, the piezoactuator being movable in the piezoactuator housing, wherein the piezoactuator moving moves a base plate of said piezoactuator in direction of the opening when triggered and wherein the piezoactuator housing is screwed into said injection valve housing, and
• a compensation collar arranged between the piezoactuator housing and the injection valve housing having a thickness, wherein the piezoactuator does not deform the compensation collar when the piezoactuator is screwed into the injection valve, and
• wherein the compensation collar defines a distance between the base plate of the piezoactuator and a transfer element to a predefined idle distance of said piezoactuator when screwed into said injection valve housing thereby completely compensating for tolerances in the idle stroke distance.

An injection valve comprising:

• a piezoactuator arranged within a piezoactuator housing and being arranged to be movable in the piezoactuator housing and driving a base plate when triggered, wherein the base plate is operable to make connection with a transfer element arranged in an injection valve housing,
• the piezoactuator housing being screwed in the injection valve housing,
• wherein the base plate of the piezoactuator is aligned with a leading edge of the piezoactuator housing, the leading edge of the piezoactuator housing has a given idle stroke distance with respect to the transfer element, and
• a compensation collar having a thickness arranged between the injection valve housing and the piezoactuator completely compensating for tolerances in the idle stroke distance,
• wherein the piezoactuator does not deform the compensation collar when the piezoactuator is screwed into the injection valve and the compensation collar thereby limits.