| 摘要 |
PURPOSE: To separate a pressure chamber of an injection nozzle from a working chamber of a pump by providing a pressure line with a pressure valve opening towards the pressure chamber, and disposing a relief valve opening towards a spring direction simultaneously with lowering of pressure in the working chamber of a pump. CONSTITUTION: A pressure line 10, 10' is provided with a pressure valve 11 which is under loading due to a spring 12 in a closed direction and opens towards a pressure chamber 13. A movable valve member 20 of a relief valve 17, which has already been under loading in an opened direction due to a pressure in the pressure chamber 13 in a high-pressure phase, opens towards a spring chamber 19 in a flow direction simultaneously with the lowering of a pressure in a pump working chamber 9. As a consequence, a clear separation can be secured between the pressure chamber of an injection nozzle and the working chamber of a pump. |
