Actuator acting as a drive unit for an injector and method for the production of said injector
AssigneeSiemens Aktiengesellschaft
InventorsWolfgang Bloching, Jurgen Dick, Willibald Schurz, Martin Simmet
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Abstract
An actuator (1) acts as a drive unit for an injector, especially for an accumulator injection system. The actuator comprises a piezostack (3) disposed in a tube spring, a top plate (2) and a bottom plate. The top plate (2) of the actuator is directly fixed to the injector housing (7) by means of caulked areas. The caulking enables the injector to be produced in a simple and economical manner.
Claims20
An actuator acting as a drive unit for an injector, especially for an accumulator injection system, comprising a piezostack disposed in a tube spring, a top plate and a bottom plate, wherein the top plate of the actuator is fixed directly to an injector housing by means of caulked areas.
A method for producing an injector with an actuator, whereby the assembly of the actuator to activate the injector in an injector housing comprises the following steps:
- Pre-assembly of the actuator comprising a piezostack disposed in a tube spring, a top plate and a bottom plate,
- Positioning of the pre-assembled actuator in the injector housing by lining up the actuator, especially by lining up the bottom plate with its predefined position and
- Fixing the actuator on the injector housing by means of caulking between the top plate and the injector housing.
Dependencies are inferred from the claim text.