JPS613933U

JPS613933U - Fuel injection timing adjustment device for distribution type fuel injection pump

Info

Publication number: JPS613933U
Application number: JP8853884U
Authority: JP
Inventors: 勇立野; 幸典宮田; 総二郎土屋; 克二塩田
Original assignee: 株式会社デンソー
Priority date: 1984-06-13
Filing date: 1984-06-13
Publication date: 1986-01-11
Also published as: JPH0330595Y2

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図ａ，ｂは本考案の一実施例のフイードポンプ力
バーを示す断面図、正面図、第２図ａは本考案の一実施
例のローラリングを示す断面図、第２図ｂは第２図ａの
Ｑ印の部分拡大図、第３図及び第４図は本考案の効果の
説明に供する特性図、第５図及び第６図はそれぞれ従来
の分配亜燃料噴射ポンプの断面図、要部断面図である。１１・・・駆動軸、１２・・・ポンプハウジング、１３
・・・フイードポンプ、１４・・・プランジャ、１６・
・・燃料室、１８・・・フエイスカム、１９・・・カム
ローラ、２３・・・圧送ポンプ室、３３・・・スピルリ
ング、４１．４１’・・・ローラリング、４３・・・調
整ピストン、５１．５１’・・・フイードポンプ力バー
。Figures 1a and b are cross-sectional views and front views showing a feed pump force bar according to an embodiment of the present invention, Figure 2a is a cross-sectional view showing a roller ring according to an embodiment of the present invention, and Figure 2b is a cross-sectional view showing a feed pump power bar according to an embodiment of the present invention. 2a is a partially enlarged view of mark Q, FIGS. 3 and 4 are characteristic diagrams for explaining the effects of the present invention, and FIGS. 5 and 6 are sectional views of a conventional distribution fuel injection pump, respectively. It is a sectional view of the main part. 11... Drive shaft, 12... Pump housing, 13
...Feed pump, 14...Plunger, 16.
...Fuel chamber, 18...Face cam, 19...Cam roller, 23...Pressure pump chamber, 33...Spill ring, 41.41'...Roller ring, 43...Adjusting piston, 51 .51'...Feed pump power bar.

Claims

[Scope of utility model registration request]

A feed pump and a plunger provided in a pump housing are rotated by a drive shaft driven by an internal combustion engine, and a face cam provided in the plunger is actuated by a cam roller to cause the plunger to reciprocate in the axial direction multiple times during one rotation, The fuel supplied to the fuel chamber in the pump housing by the feed pump is sucked into the pressure pump chamber by the reciprocating motion of the plunger, and distributed and supplied from the pressure pump chamber to each cylinder of the internal combustion engine, and the cam roller is supported. A distribution type fuel injection pump in which a roller ring is displaced in the circumferential direction by an adjustment piston that is operated according to the fuel pressure in the fuel chamber, and the actuation timing of the plunger is adjusted by the circumferential displacement of the roller ring, It has a feed pump force bar that partitions the feed pump and the fuel chamber, and a roller ring that comes into contact with the feed pump force bar.
A fuel injection timing adjustment device for a distribution type fuel injection pump, characterized in that a continuous or discontinuous recess is provided in at least one of the contact portion or the contact portion of the feed pump force bar that contacts the roller ring. .