Patent ID: 7048521
Filing Date: 2006-05-23
Classification: F04B

Abstract:
1. A high pressure fuel supply pump comprising: a housing provided with a through-hole having a step; a plunger slidably accommodated and reciprocatingly movable in the through-hole extending from an axial end thereof to the step; an intake valve member positioned in the through-hole on an axially opposite side to the plunger with respect to the step and in contact with the step so that a pump chamber is formed between the plunger and the intake valve member, the intake valve member being provided with an intake check valve through which fuel is supplied to the pump chamber when the plunger moves in an opposite direction to the step; a discharge valve member positioned in the through-hole on an axially opposite side to the plunger with respect to the intake valve member and in contact with the intake valve member, the discharge valve member being provided with a discharge check valve through which fuel is discharged from the pump chamber when the plunger moves toward the step; and a plug screw fastened into an inner wall of the through-hole on another axial end thereof so as to axially push both of the discharge valve member and the intake valve member against the step so that the intake valve member and the discharge valve member are rigidly fixed in the through-hole.