Patent ID: 6663026
Filing Date: 2003-12-16
Classification: F02M

Abstract:
A fuel injector for controlling fuel flow to an internal combustion engine, the fuel injector comprising:a body extending along a longitudinal axis; a fuel tube coupled to the body; a seat secured to the body, the seat defining an opening through which fuel flows; an armature assembly movable along the longitudinal axis with respect to the body, the armature assembly being movable between a first position spaced from the seat such that fuel flow through the opening is permitted and a second position contiguously engaging the seat such that fuel flow is prevented; a pole piece coupled to the fuel tube so as to confront the armature assembly; a resilient member biasing the armature assembly toward the second position; a member extending parallel to the longitudinal axis between a first portion and a second portion, the first portion having circumferential surface of a generally constant diameter extending within the pole piece towards a terminal end of the first portion proximate the armature assembly, the circumferential surface friction fitted to the pole piece and the circumferential surface at the terminal end of the first portion being located entirely within the pole piece, the first portion supporting the resilient member, and the second portion having a filter molded to the second portion.