| 摘要 |
A fuel injector (100) for use in an internal combustion engine, the fuel injector (100) comprising an injection nozzle having a nozzle body (120) provided with a nozzle bore (130), a valve needle (134) being received within the nozzle bore (130) and engageable with a seat region (137) to control fuel delivery through at least one nozzle outlet (126) and first and second actuator arrangements (150, 152), at least the first actuator arrangement (150, 152) being operable to apply an opening force to the valve needle (134) thereby to cause an opening movement of the valve needle (134), wherein the first actuator arrangement (150) is configured to decouple from the valve needle (134) in response to said opening movement. |
