JPS61178072U

JPS61178072U -

Info

Publication number: JPS61178072U
Application number: JP6099785U
Authority: JP
Priority date: 1985-04-25
Filing date: 1985-04-25
Publication date: 1986-11-06

Description

[Brief explanation of the drawing]

第１図は本考案に係る燃料噴射ポンプの要部断
面図、第２〜７図は従来例に関するもので第２図
は第１従来例の要部断面図、第３図は第２従来例
の要部断面図、第４図は第３図のＡ―Ａ断面図で
あるがこの位置では連絡孔６２によりプランジヤ
室とデリバリバルブ下部室４２と連通している。
第５図は第３図のＡ―Ａ断面図であるがこの位置
では連通孔６２はデリバリガイド５２によりプラ
ンジヤ室とデリバリバルブ下部室とは遮断される
。第６図は第４図のデリバリバルブ位置における
噴射管内圧力状況図、第７図は第５図のデリバリ
バルブ位置における噴射管内圧力状況図である。３３…プランジヤ室、４２…デリバリバルブ室
、５２…デリバリバルブガイド、５３…突起、６
２，６１…連通孔。 Fig. 1 is a sectional view of the main part of the fuel injection pump according to the present invention, Figs. 2 to 7 are related to the conventional example, and Fig. 2 is a sectional view of the main part of the first conventional example, and Fig. 3 is the second conventional example. FIG. 4 is a sectional view taken along the line AA in FIG. 3, and at this position, the plunger chamber and the delivery valve lower chamber 42 communicate with each other through a communication hole 62.
FIG. 5 is a sectional view taken along the line AA in FIG. 3, and in this position, the communication hole 62 is isolated from the plunger chamber and the delivery valve lower chamber by the delivery guide 52. 6 is a diagram showing the pressure inside the injection pipe at the delivery valve position shown in FIG. 4, and FIG. 7 is a diagram showing the pressure inside the injection pipe at the delivery valve position shown in FIG. 33...Plunger chamber, 42...Delivery valve chamber, 52...Delivery valve guide, 53...Protrusion, 6
2,61...Communication hole.

Claims

[Scope of utility model registration request]

A fuel injection pump having a delivery valve with a protrusion and a communication hole that communicates between the plunger chamber and the delivery valve chamber, characterized in that the delivery valve chamber is provided at the lower part of the delivery valve guide and the communication hole communicates with each other. pump.