| 摘要 |
#CMT# #/CMT# The method involves exposing contact surfaces for connecting inner electrodes (7, 8) with external electrodes (10, 11) at a peripheral surface of a piezo element (6) by selective removal of sintered skin at the contact surfaces. The sintered skin is left as an electrically insulated protective layer (24) on the remaining peripheral surface, which is free from the contact surfaces. A piezo actuator (20) is manufactured by arranging the external electrodes under simultaneous contact of the inner electrodes on the exposed contact areas. #CMT#USE : #/CMT# Method for manufacturing a piezo actuator that is utilized in a piezo actuator module (all claimed) of a piezo injector for dosing of a fuel in an internal combustion engine. #CMT#ADVANTAGE : #/CMT# The method eliminates the need for applying an insulating varnish, and enables connection of the contact surfaces for connecting the inner electrodes with the outer electrodes, without damaging the desired, electrically isolating sintered skin at the remaining peripheral surface. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a schematic longitudinal sectional view of a piezo injector. 6 : Piezo element 7, 8 : Inner electrodes 10, 11 : External electrodes 20 : Piezo actuator 24 : Protective layer. |
