| 摘要 |
PROBLEM TO BE SOLVED: To prevent water, an impurity and the like from staying in a damping chamber in a pulsation damper body.SOLUTION: This pulsation damper includes the pulsation damper body 14 forming the damping chamber 15 on the inside, and a stud bolt 18 threadedly engaging with the pulsation damper body 14 and fixing the pulsation damper body 14 to a fuel injection rail or a fuel supply pipe. In this stud bolt 18, a plurality of passages 22a and 22b for circulating fuel between the damping chamber 15 and the fuel injection rail or the fuel supply pipe are formed so as to disperse in the pressure gradient direction of the fuel. |
