| 摘要 |
In a fuel injection valve having a valve body (10), having a control pressure chamber (16) embodied in it and closed on one side by an actuating part (14) for a nozzle needle (12), which needle, controlled by the actuating part, is displaceable between a closing position and an opening position, having an inlet (18) to the control pressure chamber and an outlet (20) out of the control pressure chamber, the outlet being controlled by a control valve (24), in which the injected fuel quantity is metered with high precision. To that end, a displaceable throttle piston (32) is provided, which in a first position enables a partial opening stroke of the nozzle needle out of the closing position counter to a slight resistance, and in a second position enables a remaining opening stroke, immediately following the partial opening stroke, of the nozzle needle (12) into the opening position only counter to a higher resistance.
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