| 摘要 |
<p>An actuator and valve assembly (28) for an electronically-controlled unit injector (18) is disclosed which comprises an electrically-energizable actuator assembly (36) and a device (56) for communicating, collecting and draining damping fluid with respect to at least one cavity (57, 89) of the actuator assembly (36). If too much damping fluid remains in the actuator assembly (36) after engine shutdown, that damping fluid may cool off and cause slow response of the actuator and valve assembly (28) during cold engine starting. The end result is that quick starting and/or operation of the engine (12) may be hindered, particularly under cold engine conditions. The communicating, collecting and draining means (56) permits at least a portion of the hot damping fluid to automatically drain from the cavity (57, 89) after the engine (12) has been shutdown.</p> |
