Patent ID: 6786434
Filing Date: 2004-09-07
Classification: F02M

Abstract:
A method of setting armature lift in a fuel injector having a first tube with an upstream end and a downstream end extending along a longitudinal axis, the first tube fixedly connected to a body, the body containing an armature reciprocally disposed therein, the armature having an upstream end and a downstream end, the method comprising:inserting a second tube into the first tube, the second tube having first and second ends contacting an inner surface of the first tube along the longitudinal axis, and a middle portion disposed between the first and second ends, the middle portion being spaced from the first tube so that the middle portion avoids contact with the first tube, the second tube including a downstream end of the second tube engaging the upstream end of the armature, the second tube being contiguous to a non-magnetic shell along the longitudinal axis, and the non-magnetic shell having a portion contiguous to the body along the longitudinal axis; inserting a lift gage through the second tube, the lift gage biasing the armature away from the second tube in a direction toward the downstream end of the armature, such that the lift gage measures a gap between the second tube; and separating the second tube away from the armature towards the upstream end of the first tube and away from the armature so as to provide a gap between a downstream end of the second tube and the upstream end of the armature.