| 摘要 |
A pressure limiting valve assembly (10) for a fuel injection system comprises a mounting portion (22) for fixing said valve assembly in a bore (12) provided in a wall (14) of a fluid passage or chamber (16) of the fuel injection system. An obturating member (38), moveable in the bore (12), comprises a sealing surface (52) adapted to engage, in a closed position, a sealing seat (53) associated with an inlet port (18). A spring (56) is arranged in between the mounting portion (22) and the obturating member (38) to bias the obturating member (38) against the sealing seat (53). A guide rod (36) extends from the mounting portion (22) towards the sealing seat (53), and the obturating member (38) engages slideably with the guide rod (36) to be guided thereby during its opening and closing strokes. |
