| 摘要 |
PROBLEM TO BE SOLVED: To perform a pressure/flow control precisely using a simple configuration not requiring electric control. SOLUTION: A variable flow ejector 10 according to the invention is composed of a nozzle 32, a needle 33, and a diaphragm 35 and a second diaphragm 36. The nozzle 32 is furnished internally with a fluid passage 51 for supplying the fuel from a fuel supply part through a supply side pressure control part. The needle 33 extending along the axis of the nozzle 32 is inserted into the passage 51 and held in such a way as slidable in the axial direction. The upstream end of the passage 51 is blocked with the first diaphragm 35. The two diaphragms 35 and 36 located separately are connected fast to the base end of the needle 33. The diaphragms 35 and 36 and a casing 10a constitute an air extreme pressure lead-in chamber 54, while the second diaphragm 36 and the casing 10a constitute a fuel extreme pressure lead-in chamber 56. |
