JPS586960U

JPS586960U - fuel injection pump

Info

Publication number: JPS586960U
Application number: JP9977181U
Authority: JP
Inventors: 健次新宮
Original assignee: ヤンマーディーゼル株式会社
Priority date: 1981-07-04
Filing date: 1981-07-04
Publication date: 1983-01-17
Also published as: JPS633418Y2

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) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は本考案実施例の燃料噴射ポンプの正面図、第２
図は第１図の■−■縦断面図、第３図は第２図の■部拡
大図、第４図は第１図の燃料噴射ポンプの要部分解斜視
図である。１・・ｐ・・・ポンプ本体、２・・・・・・バレル、２
ａ・・・・・・バレル外側面、３・・・・・・プランジ
ャ、３ａ・・・・・・プランジャ頂部、３ｂ・・・・・
・プランジャ側周面、５・・・・・・環状弁、２２・・
・・・・通油孔、３５・・・・・・燃料室、４３・・・
・・・プランジャ嵌挿穴、４５・・・・・・漏出油排出
路、４６・・・・・・連通路、４７・・・・・・環状溝
。Figure 1 is a front view of the fuel injection pump according to the embodiment of the present invention;
3 is an enlarged view of section 2 in FIG. 2, and FIG. 4 is an exploded perspective view of a main part of the fuel injection pump shown in FIG. 1. 1...p...Pump body, 2...Barrel, 2
a...Barrel outer surface, 3...Plunger, 3a...Plunger top, 3b...
・Plunger side circumferential surface, 5... Annular valve, 22...
...Oil hole, 35...Fuel chamber, 43...
... Plunger insertion hole, 45 ... Leak oil discharge path, 46 ... Communication path, 47 ... Annular groove.

Claims

[Scope of utility model registration request]

Barrel 2 attached to pump body 1. The plunger 3 inserted into the plunger insertion hole 43 is reciprocated with the rotation of the camshaft 65 to enable fuel to be pumped, while the middle part of the barrel 2 communicates with the plunger insertion hole 43. A fuel chamber 35 is formed in this state, and the fuel chamber 3
5, the annular valve 5 is slidably and rotatably fitted to the outside of the plunger 3, and the plunger 3 is rotated appropriately according to the load condition of the engine, so that the annular valve 5 is connected to the plunger 3. The annular valve 5 is arranged in the axial direction of the plunger 3 so that the amount of fuel to be injected can be controlled by changing the timing of opening and closing of the oil passage hole 22 formed between the top 3a and the side circumferential surface 3C. A fitting portion of the plunger 3 and the barrel 2 is located at a position closer to the camshaft 65 than the fuel chamber 35 in the barrel 2. An annular groove 47 is formed so as to surround the outer periphery of the plunger 3, and a communication hole 4 is formed which communicates the annular groove 47 with the outer peripheral surface 2a of the barrel 2.
6, the fuel injection pump is connected to a fuel oil return passage.