| 摘要 |
PURPOSE:To obtain a good spraying characteristic at all times by a method wherein a fuel return path is opened at a place opposite to the nozzle of an eddy-current chamber and the opening area thereof is controlled by a control valve in accordance with the pressure of the eddy-current chamber in the fuel injection valve equipped with the eddy-current chamber. CONSTITUTION:The fuel injection valve 1 in a gas turbine engine is constituted by forming the first eddy-current chamber 26 between a vortex plate 16 and a valve body 18 and the second eddy-current chamber 26 between a vortex holder 14 and the first eddy-current chamber 26 in the lower part thereof and the eddy- current chamber 26 is opened in the same chamber 28 through a nozzle 30 while the eddy-current chamber 28 is opened in a combustion chamber through the nozzle 32 resepctively. In this case, a relief opening 185 is provided on a wall surface opposite to the nozzle 30 of the eddy-current chamber 26 while the opening 185 is communicated with a return pipe through a reverse flow preventing valve 80, a choke member 74 and the like. The choke member 74 is provided with a control valve 75, fitting a spring 76 used both for the closing spring of the reverse flow preventing valve 80, to choke the opening area of the orifice 741 in accordance with the pressure of the eddy-current chamber 26. |
