FUEL OVERFLOW VALVE FOR FUEL INJECTION SYSTEM AND FUEL INJECTION SYSTEM HAVING FUEL OVERFLOW VALVE

摘要

The present subject matter relates to a fuel overflow valve (36) for a fuel injection system, particularly for limiting the pressure in a low-pressure region of the fuel injection system, the fuel overflow valve (36) has a valve housing (38), in which a valve member (42; 142) is disposed in a stroke-moving manner. The stroke movement of the valve member (42; 142) controls a connection (43) of an inlet of the valve housing (38) with a release region. The valve member (42; 142) is loaded by a valve spring (48) in a direction of a locking position, in which the connection (43) of the inlet with the release region is interrupted. Further, the valve member (42; 142) is loaded by the pressure prevailing in the inlet in an opening direction. According to the present subject matter, the valve member (42; 142) carries out a further stroke in the locking direction beyond the locking position. Moreover, the valve member (42; 142) acts independent of the valve spring (48).