| 摘要 |
<p>A fuel injection valve includes a valve chamber (14), a control valve (3), an actuator (4), a control chamber (26), and a nozzle (2). The control valve (3) is provided in the valve chamber (14). The actuator (4) actuates the control valve (3). The control chamber (26) is always communicated with the valve chamber (14) through a communication passage (15). The nozzle (2) has a needle (21) for opening and closing an injection orifice (24), wherein the needle (21) is biased in a valve closing direction for closing the injection orifice (24) by pressure of fuel in the control chamber (26). High pressure fuel in a high-pressure fuel passage (13) is introduced into the control chamber (26) only through the communication passage (15) in a state, where communication between the valve chamber (14) and the high-pressure fuel passage (13) is allowed by the control valve (3). The communication passage (15) has a common orifice (50).</p> |
