FUEL OVERFLOW VALVE FOR A FUEL INJECTION DEVICE, AND FUEL INJECTION DEVICE COMPRISING FUEL OVERFLOW VALVE

摘要

The invention relates to a fuel overflow valve for a fuel injection device, in particular for limiting the pressure in a low-pressure region of the fuel injection device. The fuel overflow valve (36) has a valve element (58) which is movably arranged in a receiving portion (40) and which is urged in the closing direction by a valve spring (60) and in the opening direction by the pressure in the low-pressure region (19, 52). A connection (54) of the low-pressure region (19, 52) to a return line (38) is opened by the overflow valve (36) when an overflow valve opening pressure is reached. A valve support (42) is arranged in the receiving portion (40) in a stationary manner, said valve support (42) having a sleeve-shaped portion (44) on which the annular valve element (58) is movably guided. A connection (54) to the return line (38), said connection running through the sleeve-shaped portion (44), is controlled by the valve element (58).