Patent ID: 6892967

Claim:
A fuel injection valve for intermittent fuel injection into the combustion space of an internal combustion engine, which comprises: a housing having an injection valve-seat element, a double acting control piston, a slide-valve body, a control body, a pilot valve, a high-pressure inlet for a fuel, and an injection valve member for cooperating with said valve-seat element and being arranged for being longitudinally moveable in the housing and being spring-loaded in a direction toward said valve-seat element, said double-acting control piston being positioned on the injection-valve member and delimiting a high-pressure space flow-connected to the high-pressure inlet and delimiting a control space with said slide-valve body, said slide-valve body being guided in a sliding fit in said housing and which has a first end face likewise delimiting the control space, a second end face located opposite said first end face and a throttle passage extending between said first and second end faces, and said control body having a slide-valve seat cooperating with the second end face of the slide-valve body and which has a control passage formed therein which emanates from the slide valve seat, and which is flow-connected to the throttle passage and which is adapted to be communicated to a low-pressure space in said housing by said pilot valve, the throttle passage and the control passage being flow-connected to the high-pressure space via a throttle inlet and a gap which is formed when the slide-valve body lifts off said slide-valve seat for being flow-connected to the high-pressure space, wherein the slide-valve body has a second passage which issues into the control space and which is closed when the slide-valve body engages the control body and is connected to the high-pressure space when the slide-valve body is lifted off the control body.