Patent ID: 7044406
Filing Date: 2006-05-16
Classification: F02M

Abstract:
1. In a fuel injection valve for internal combustion engines, having a valve body ( 1 ), in which a hollow valve needle ( 5 ) is disposed longitudinally displaceably in a bore ( 3 ) and on its end toward the combustion chamber has a conical valve sealing face ( 24 ) that cooperates with a conical valve seat ( 18 ), disposed on the end toward the combustion chamber of the bore ( 3 ), and having a longitudinal bore ( 6 ), embodied in the hollow valve needle ( 5 ), in which bore a valve needle ( 7 ) is disposed that, with a valve contact face ( 26 ) embodied on its end toward the combustion chamber, likewise cooperates with the valve seat ( 18 ), the improvement comprising a chamfer ( 30 ) forming a conical face on the end of the hollow valve needle ( 5 ) toward the combustion chamber, wherein the cone that forms the conical face of the chamfer ( 30 ) has a larger opening angle than the valve sealing face ( 24 ).