Patent ID: 6687965
Filing Date: 2004-02-10
Classification: F02M,Y10T

Abstract:
An apparatus for lift setting of an armature/needle of fuel injector extending along a central axis and having an upstream body, a downstream body, and an intermediate body, wherein an upstream end of the intermediate body is connected to the upstream body and a downstream end of the intermediate body is connected to the downstream body, the upstream end having an inlet tube, the downstream end having a valve body with a seat and an armature disposed in the valve body, the apparatus comprising:a subassembly of the fuel injector including a deformable intermediate body affixed to the upstream body and the downstream body so that the bodies are fixed in relation to each other along a central axis; a plurality of punches, each punch having a longitudinal axis and a contact end, the respective longitudinal axes intersecting at a common point, each of the contact ends contiguous to a circumferential outer surface of the deformable intermediate body; and an actuator operatively connected to the plurality of punches such that operation of the actuator moves each of the plurality of punches along each respective longitudinal axis so that the contact end of each of the plurality of punches compresses the deformable intermediate body in a plane of the longitudinal axes and plastically elongates the deformable intermediate body along the central axis to provide a working gap between the first end of the upstream body and the surface of the armature in the downstream body.