Patent ID: 6691934
Filing Date: 2004-02-17
Classification: F02M

Abstract:
A fuel injection valve for internal combustion engines, comprisinga housing (12), in which a pistonlike valve member (35) is disposed longitudinally displaceably in a bore (34) and by a longitudinal motion in an opening direction, with its end toward the combustion chamber, causes at least one injection opening (39) to communicate with a pressure chamber (37) embodied in the housing (12), an inlet conduit (14) that is embodied in the housing (12) and discharges into the pressure chamber (37) and by way of which conduit the pressure chamber (37) can be filled with fuel at high pressure, a control chamber (20), embodied in the housing (12) and filled with fuel, wherein the pressure in the control chamber (20) at least indirectly exerts a force acting in the closing direction on the valve member (35), the control chamber (20) communicating with the inlet conduit (14), a control valve (16), disposed in the housing (12), by way of which valve the control chamber (20) can be made to communicate with a leak fuel chamber (23) in which a markedly lower pressure prevails than in the inlet conduit (14), and a damping chamber (46) in the housing (12) communicating with the inlet conduit (14) via at least one throttle (44).