A FUEL VALVE FOR PILOT OIL INJECTION AND FOR INJECTING GASEOUS FUEL INTO THE COMBUSTION CHAMBER OF A SELF-IGNITING INTERNAL COMBUSTION ENGINE

摘要

A fuel valve (50) for pilot oil injection and gas fuel injection into a self-ignition internal combustion engine is disclosed. The fuel valve comprises: a long fuel valve housing (52) having a rear end part and the front end part; a nozzle (54) having a nozzle hole (56); a gas fuel inlet port (53) for being connected to a pressurized gas fuel supply source (60); and a valve needle (61) which is capable of displacement in the axial direction and having a closed position and an opened position and mounted on a seat (69) at the closed position in order to prevent flow from the gas fuel inlet port (53) to the nozzle (54).