| 摘要 |
PURPOSE:To perform open/close control of an injection valve quickly and reliably by driving and controlling a fuel gas injection valve for gas engine through the delivery oil pressure of a fuel injection pump to be driven through an engine. CONSTITUTION:Gas from a fuel gas tank 19 is fed with constant pressure through a pressure regulation valve 18 to an injection valve body 1 then through holes 15, 14, a chamber 20, a hole 21 and a spiral path 22 to the ejection hole 8 of a poppet valve 9. While a controller 141 is provided with such inputs as timer position 144, spill position 146, accelerator position 147, intake air pressure 148, cooling water temperature 149, intake air temperature 150, etc. to produce the operating outputs for an ejection control spill ring operator 130, an ejection timing control timer operator 151, and an ejection stop valve 120 in conventional distribution ejection pump 100. The oil pressure from said pump 100 will function through a tube 27 onto the piston 24 to lower said piston against a spring 13 for closing the poppet valve 9 thus to eject the fuel gas directly during compression stroke of cylinder with proper timing by proper amount. |
