FUEL INJECTOR CONTROL VALVE DEFLECTOR

摘要

The present disclosure relates to a fuel injector (1) having a control valve (11) for controlling fuel pressure in a control chamber (13). The control valve (11) comprises a valve seat (20); and a valve member (12) having a valve face (19) for cooperating with the valve seat (20) to control fuel pressure in the control chamber (13). A return line (44) is provided for returning fuel from the control chamber (13). An armature (26) connected to the valve member (12) and an actuator (24) is provided for actuating the armature (26). The armature (26) is disposed in an armature chamber (28). A deflector (34) is provided in the armature chamber (28) to form a first sub-chamber (40) and a second sub-chamber (41). The first and second sub-chambers (40, 41) are in fluid communication with each other via at least one first aperture (38). In use, a pressure differential is established between the first and second sub-chambers (40, 41) when the valve face (19) lifts from the valve seat (20) promoting the flow of fuel from the second sub-chamber (41) into the first sub-chamber (40) through said at least one first aperture (38).