| 摘要 |
PROBLEM TO BE SOLVED: To surely ignite a gas fuel at a proper timing.SOLUTION: In a gas fuel valve of a self-ignition type internal combustion engine, a plurality of nozzle holes of a nozzle 54 are opened to a suck chamber (55), the nozzle (54) is disposed on a front end portion of a fuel valve housing, and includes a base portion and a nozzle body, and the nozzle (54) has a nozzle hole near its tip end. The fuel valve has a gas fuel suction port connected to the gas fuel, and a valve needle (61) having a closing position and an opening position, and movable in an axial direction. A valve seat (69) makes a fluid circulate between a fuel chamber (58) and the gas fuel suction port (53), and makes the fluid circulate between a discharge port (68) and a suction chamber (55). The fuel valve includes an actuator system for controllably moving the valve needle (61) between the closing position and the opening position, and an ignition liquid supply pipe connecting an ignition liquid introduction port with the fuel chamber (58), and including a fixed-type flow restricting portion.SELECTED DRAWING: Figure 8 |
