| 摘要 |
PROBLEM TO BE SOLVED: To provide a high-pressure pump which can maintain a stable valve-opening operation and a valve-closing operation of a discharge valve.SOLUTION: In a high-pressure pump, a cylindrical union 61 is fixed to an inner wall of a fuel discharge part attachment hole which is formed at an upper housing. A seat member 70 is arranged at the diameter inner side of the union 61, and a discharge value 80 is seated on/off to/from a valve seat 76 which is arranged at the fuel outlet side of a first flow passage 71 possessed by the seat member 70. A stopper member 90 for limiting a movement amount of the discharge valve 80 in a valve-opening direction forms a second flow passage 92 which makes fuel having flowed out of the first flow passage 71 flow to the fuel outlet side, and is pressed into an inner wall of the union 61 in a radial inside direction to be fixed. By this constitution, since the stopper member 90 can be made of a hard material which is applied with heat treatment or the like, even if the abutment and separation of an abutment face 93 of the stopper member 90 and the discharge value 80 are repeated, the wear of the abutment face 93 of the stopper member 90 is suppressed. |
