| 摘要 |
The invention relates to a fuel injection valve for internal combustion engines for injecting fuel under high pressure utilizing a nozzle needle interacting with a valve seat by longitudinal movements thereof, thus opening and closing at least one injection opening. The nozzle needle is subjected to a locking force directed toward the direction of the valve seat pressure in a control space. A control valve is configured in a valve body, by which the pressure in the control space can be adjusted. The control valve has a control valve space connected to the control space, in which a control valve member is disposed in a longitudinally movable manner, and opens and closes a connection of the control valve space to a leakage oil space by longitudinal movement. The control valve member is surrounded by pressure in the control valve space and configured such that no or very little resulting hydraulic force acts upon the control valve member in the longitudinal movement direction by the pressure in the control space, if the control valve member closes the connection of the control valve space to the leakage oil space.
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