| 摘要 |
PROBLEM TO BE SOLVED: To suppress damage of a valve seat portion of a control valve of a back pressure control section caused by foreign matters in high pressure fuel.SOLUTION: An inlet connector having an introduction passage of high pressure fuel is mounted to an inlet opening of a housing. A fuel chamber is formed by an end surface of the inlet connector and a bottom surface of the inlet opening. A first fuel passage communicating with the side of a nozzle is opened in an outer peripheral portion of the bottom surface in a region of the fuel chamber, and a second fuel passage communicating to the side of the back pressure control section is opened in a central portion, so that the high pressure fuel introduced from the inlet connector to the fuel chamber can form a turning flow. |
