Patent ID: 7021567

Claim:
In a fuel injection valve for internal combustion engines, having a housing ( 1 ) with a bore ( 16 ) inside it that contains a longitudinally sliding outer valve needle ( 20 ), which in turn contains a longitudinally sliding inner valve needle ( 22 ), and the end of each valve needle oriented toward the combustion chamber controls at least one injection opening ( 30 ), having a control chamber ( 50 ) that is connected via an inlet throttle ( 70 ) to a high-pressure chamber ( 10 ) whose pressure at least indirectly exerts a closing force on the outer valve needle ( 20 ), having a control pressure at least indirectly exerts a closing force on the outer valve closing force on the inner valve needle ( 22 ), and having an oil leakage chamber ( 78 ) in which a low fuel pressure always prevails, the improvement wherein the housing ( 1 ) contains a control valve ( 58 ) having a valve chamber ( 68 ) and a valve element ( 60 ) contained in it, wherein the valve chamber ( 68 ) has a connection ( 59 ) to the leakage oil chamber ( 78 ), a continuously open connection ( 72 ) to the control chamber ( 50 ), and a connection ( 74 ) to the control pressure chamber ( 52 ), wherein the valve element ( 60 ) in the valve chamber ( 68 ) can move between two end positions: in the first end position, the valve element ( 60 ) closes the connection ( 59 ) to the leakage oil chamber ( 78 ) and opens the connection ( 74 ) to the control pressure chamber ( 52 ); in the second end position, it closes the connection ( 74 ) to the control pressure chamber ( 52 ) and opens the connection ( 59 ) to the leakage oil chamber ( 78 ).