| 摘要 |
A fuel injection valve for internal combustion engines, having a 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) is embodied in the housing (12) and discharges into the pressure chamber (37), and by way of it the pressure chamber (37) can be filled with fuel at high pressure. A fuel-filled control chamber (20) is also embodied in the housing (12); 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) communicates with the inlet conduit (14) and can be made to communicate via a control valve (16) with a leak fuel chamber (23), in which a markedly lower pressure prevails than in the inlet conduit (14). In the housing (12), a damping chamber (46) is embodied, which communicates with the inlet conduit (14) via a throttle (44).
|
