Fuel injector and method of assembling a fuel injector

摘要

A fuel injector comprising a nozzle body (10) having a first bore (11) defining first and second seatings (13, 22) and an outer valve member (12) slidable within the first bore (11) and engageable with the first seating (13) to control fuel flow from a first outlet opening (14) located downstream of the first seating (13). The outer valve member (12) is provided with a through bore (17) and an inner valve member (20) is slidable within the through bore (17) and is engageable with a second seating (24) to control fuel flow from a second outlet opening (24). The through bore (17) defines a step (27) which is engageable with an enlarged region (20a) of the inner valve member (20), the through bore (17) permitting, during fuel injector assembly, insertion of the inner valve member (20) into the through bore (17) through an end of the through bore (17) remote from the first and second outlet openings (14, 24). The invention also relates to a method of assembling such a fuel injector.