Internal combustion engine fuel injector

摘要

The injector has a hollow body (12) carrying a nozzle; a metering valve (24); and an electromagnet (26) for activating an armature (27) controlling the valve (24). The electromagnet (26) is housed inside a jacket (54) integral with an end wall (57) fitted with a discharge fitting (32) of the valve (24). The armature (27) is guided by a guide member (66) having a thread (69) engaging a corresponding thread (18) of the hollow body (12), independently of fitment of the body (33) of the valve (24). A spacer (82) of modular size is provided between the electromagnet (26) and the guide member (66) to adjust the gap between the armature (27) and the electromagnet (26). The jacket (54) is fitted to the hollow body (12) by means of a cover (62) which screws onto the hollow body (12).