| 摘要 |
PURPOSE:To permit to obtain a good atomizing characteristic even in a low flow amount area by a method wherein a fuel return path is opened at the opposite position of a nozzle in an eddy-current chamber and a fuel amount control mechanism is provided in the same path 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 28 between a vortex holder 14 and the eddy-current chamber 26 in the lower part thereof while both chambers 26, 28 are communicated mutually through a nozzle 30. In this case, a relief opening 185 is formed on the wall surface opposite to the nozzle 30 in the eddy- current chamber 26 while the opening 185 is communicated with a return pipe through a reverse flow preventing valve 80, a choking member 74, a hole 20, paths 105, 106, a horizontal hole 382 or the like. The choking member 74 is provided with an orifice 741, setting the amount of fuel to be returned from the eddy-current chamber 26, at the lower end face thereof. |
