Patent ID: 6302087
Filing Date: 2001-10-16
Classification: F02M

Abstract:
A fuel injection valve for internal combustion engines, comprising a housing (1) which has an inlet (5) for fuel from a high-pressure fuel supply, an injection valve needle, is guided in the housing, a sealing face disposed on one end of said injection valve needle cooperates with a valve seat in the housing and in so doing controls a connection between a pressure chamber (7) that communicates constantly with the inlet (5) and at least one injection port, and that on another end said injection valve needle is exposed at least indirectly to a pressure in the control pressure chamber (7) that communicates constantly with the inlet (5) via a Z-throttle (8) and is defined a cylinder (4) by a movable wall (6), said movable wall (6) is operatively connected to the injection valve needle, and a relief line (25) containing an outlet throttle (26) leads away from the control pressure chamber (7), and an outlet into a relief chamber is controlled by a magnet valve, a valve member (45, 50) of said magnet valve is connected to an armature (40) and is guided in an insert (10) that receives a valve seat (28) of the magnet valve (29), the relief line (25) and outlet throttle (26) and the control pressure chamber (7), said insert (10) is braced in the housing (1) of the fuel injection valve by the housing (34) of the magnet valve (29), and the insert (10) additionally receives the cylinder (4) with the movable wall (6).