Patent ID: 6422210
Filing Date: 2002-07-23
Classification: F02M

Abstract:
A fuel injector comprising a valve needle which is slidable within a bore and engageable with a seating to control fuel delivery through first and second outlet openings, the valve needle being moveable between a closed position and first and second fuel injecting positions, a fuel supply passage for supplying fuel under pressure to the bore, a control chamber which is arranged to receive fuel from the fuel passage, in use, the valve needle being acted upon in use by a force due to fuel pressure within the control chamber, an actuator arrangement for controlling fuel pressure within the control chamber, and a damping arrangement for damping movement of the valve needle away from the seating into the first or second fuel injecting position wherein the damping effect on the valve needle movement away from the seating is greater than the damping effect toward the seating.