| 摘要 |
PURPOSE:To simplify the structure and to improve the productionability of a fuel injector for feeding fuel to the injectors fixed to respective cylinder of engine and injecting, by enabling forced circulation of fuel in the injector through single tube. CONSTITUTION:The fuel flowed through an opening 15 made at the fuel flow- in section of a flow-in tube 11 will pass through a filter 12, the inner diameter section of a spring 7 and the side port 19 of a valve 5 to the outercircumference of said valve 5 and upon opening of the valve 5, spiral flow is produced at the shaft port 20 of spiral chip 9 to be injected through a nozzle 10. The residual fuel is passed through the gap of core 3 and the plunger 6 or thrugh a hole 22 made through the plunger 6 to the outercircumference of a coil 4 then through an opening 13 made at the upper portion of core 3 and the double wall path formed with the walls of coaxially arranged flow-in and flow-out tubes 11, 18 to a fuel pipe 17. Consequently, forced circulation of fuel in an injector can be achieved through single tube structure. |
