此发明论及一种内燃机燃油喷射泵,这种燃油泵的泵体内孔至少安装有一对柱塞偶件和一个出油阀体,此出油阀体在泵体内通过一个直接压在其上并与高压油管相连的出油接头,直接紧压在柱塞套的密封端面上,与出油阀体相接的柱塞套端面以及出油接头端面的外径相同,在出油阀体的两个密封面上各有一个环形槽,通过这个环形槽将出油阀的两个密封面分成内环形密封面和外环形密封面。 This invention relates to a fuel injection pump for an internal combustion engine having at least a pair of plunger couplings and an oil outlet valve body mounted in the internal bore of the oil pump, The oil outlet connected with the high pressure oil pipe is directly pressed on the sealing end surface of the plunger sleeve and has the same outer diameter of the plunger sleeve end and the oil outlet end connected with the oil outlet valve body. Each of the sealing surfaces has an annular groove through which the two sealing surfaces of the oil outlet valve are divided into an inner annular sealing surface and an outer annular sealing surface.