| 摘要 |
A fuel injector (32) for a machine (10) is disclosed. The fuel injector has a nozzle member (56) with a first end (64) and a second end. The first end of the fuel injector has at least one orifice (80). The fuel injector also has a control chamber (71) located toward the second end of the nozzle member with an end wall portion (116) approximately orthogonal to an axial direction of the nozzle member. The fuel injector further has a port (78) disposed in the end wall portion of the control chamber and at least one passageway (77) in fluid communication with the control chamber via the port. The fuel injector additionally has a needle valve element (58) with a tip end (82) and a base end (110). The tip end is configured to selectively block fuel flow through the at least one orifice. The base end has a recess (112) configured to cap off the port. |
