Fuel supply device for fuel injection system of internal combustion engine, comprises high-pressure fuel pump that has pump element and through that fuel is supplied into high-pressure area, where injector is provided in high-pressure area

摘要

The fuel supply device comprises a high-pressure fuel pump (10), which has a pump element (20) and through that the fuel is supplied into a high-pressure area (12). An injector (14) is provided in the high-pressure area for fuel injection into the internal combustion engine. The high-pressure fuel pump has a drive area (30,32) arranged in an inner area (28) of a pump housing (26). The fuel is supplied by a feed pump (16) over a fuel inlet (38) through the inner area of the pump housing to the pump element of the high-pressure fuel pump. The opening pressure of a relief valve (54) is variable.