Patent ID: 6817547
Filing Date: 2004-11-16
Classification: F02M

Abstract:
In a fuel injection device for an internal combustion engine, having a fuel injection valve (12) that has an injection valve member (28), which is guided so that it can slide in a valve body (26) and controls at least one injection opening (32) and which can be moved in the opening direction (29), counter to the force of a closing spring (44) contained in a spring chamber (46) by means of the pressure prevailing in a pressure chamber (40) of the fuel injection valve (12), in which highly pressurized fuel is supplied from a high pressure source (10; 110) to the pressure chamber (40) of the fuel injection valve (12) in order to initiate fuel injection, and having an electrically controlled valve (23; 123), which at least indirectly controls a connection of the pressure chamber (40) to a relief chamber (24) and which connects the pressure chamber (40) to the relief chamber (24) in order to terminate the fuel injection, the improvement wherein the pressure chamber (40) of the fuel injection valve (12) has a connection (100) to the spring chamber (46), which connection contains a check valve (102) that opens toward the pressure chamber (40).