| 摘要 |
A nozzle assembly includes a nozzle body with a valve seat and a nozzle member that is partially positioned within the nozzle body. At least one of the nozzle member and the nozzle body defines a supply passage. There is a segment of the supply passage positioned above the valve seat and has a spiral shape. The nozzle member moves between a first position, a second position, and a third position. When the nozzle member is in the first position, a lower portion of the nozzle member is in contact with the valve seat and the supply passage is closed. When the nozzle member is in the second position and the third position, a lower portion of the nozzle member is out of contact with the valve seat and the supply passage is opened. When the nozzle member is in the second position, fuel is injected at a relatively high included angle. When the nozzle member is in the third position, fuel is injected at a relatively low included angle.
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