JPS59133773U

JPS59133773U - electromagnetic fuel injector

Info

Publication number: JPS59133773U
Application number: JP2701283U
Authority: JP
Inventors: 泰雄大野; 清野　正; 幸男上野; 苅山　憲治; 宇都木　伸二; 成男岡田
Original assignee: 東北三國工業株式会社
Priority date: 1983-02-28
Filing date: 1983-02-28
Publication date: 1984-09-07
Also published as: JPS6224047Y2

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 drawings]

第１図は本考案電磁式燃料インジェクタの断面図、第２
図はバルブ部分の拡大断面図、第３図は従来形インジェ
クタの部分的拡大断面図である。Figure 1 is a sectional view of the electromagnetic fuel injector of the present invention, Figure 2
The figure is an enlarged sectional view of a valve portion, and FIG. 3 is a partially enlarged sectional view of a conventional injector.

Claims

[Claims for Utility Model Registration] 1. A fuel passage 30.3 that communicates with the valve chamber 18 by making the core 4 and the plunger 6 hollow and arranged in the body 1 made of magnetic material.
In an injector, a ball valve 7 fixed to the tip of a plunger is assembled into a seat member 13 so as to be able to move toward and away from the seat member 13, and when the solenoid coil 3 is energized, the ball valve 7 is opened to inject fuel. Guide pipe 5
The tip of the plunger 6 is extended into the valve chamber 18, and a collar-shaped stopper 16 is formed on the valve chamber side protruding end of the plunger 6 that is loosely fitted in the guide pipe to touch and separate from the extended end of the guide pipe to regulate the plunger stroke. The electromagnetic fuel injector is further characterized in that a groove or hole 32 is provided in the root portion of the collar-shaped stopper 16 on the side opposite to the pole, so that the outside of the stopper communicates with the fuel passage 31 or 30. 2 A widening conical or spherical surface 15 is formed at the extended end of the guide pipe 5 on the valve chamber side, and the guide pipe is self-aligned at the end of the suction stroke of the plunger on the side opposite to the ball of the stopper 16 of the plunger 6. Utility model registration claim 1 forming a spherical surface 17 that abuts a conical surface or a spherical surface
Electromagnetic fuel injector as described in section. 3. The seat surface 21 of the seat member 13 is at a right angle, and the contact area with the ball is 0. The electromagnetic fuel injector according to claim 1, which has a conical surface similar to that of an IC. 4. The electromagnetic fuel injector according to claim 1, wherein the core 4 is spot-welded to the guide pipe 5 after setting the air gap L with the upstream side of the plunger.