JPS5887964U

JPS5887964U - electromagnetic fuel injector

Info

Publication number: JPS5887964U
Application number: JP18508181U
Authority: JP
Inventors: 神谷　欣吾; 高城　孝明
Original assignee: 愛三工業株式会社
Priority date: 1981-12-11
Filing date: 1981-12-11
Publication date: 1983-06-15

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図は従来の電磁燃料噴射器の縦断面図、第２図は第
１図の燃料噴射口部分の拡大説明図、第３図はこの考案
による電磁燃料噴射器の縦断面図、第４図は第３図の開
閉弁の詳細図、第５図ないし第７図は他の実施例の開閉
弁の詳細図である。２２・・・・・・バルブ・ハウジング、２３・・・・・
・燃料噴射口、２４・・・・・・ガイド孔、２５・・・
・・・燃料通路、２７・・・・・・磁気ハウジング、２
８・・・・・・固定磁心、２９・・・・・・電磁コイル
、３１，４１，５１．６１・・・・・・開閉弁、３２．
４２．５２．６２・・・・・・弁子、３３．４３，５３
．６３・・・・・・スライドＫｓ４−・・・・・アーマ
チュア。５ａ５ −　第４図３１　３３ｂ　３３ａ　　　− ３３ｂ３３３４Fig. 1 is a vertical cross-sectional view of a conventional electromagnetic fuel injector, Fig. 2 is an enlarged explanatory view of the fuel injection port in Fig. 1, Fig. 3 is a longitudinal cross-sectional view of the electromagnetic fuel injector according to this invention, and Fig. 4 is a longitudinal cross-sectional view of a conventional electromagnetic fuel injector. This figure is a detailed view of the on-off valve of FIG. 3, and FIGS. 5 to 7 are detailed views of on-off valves of other embodiments. 22... Valve housing, 23...
・Fuel injection port, 24... Guide hole, 25...
... Fuel passage, 27 ... Magnetic housing, 2
8... Fixed magnetic core, 29... Electromagnetic coil, 31, 41, 51. 61... Open/close valve, 32.
42.52.62... Benko, 33.43,53
．． 63... Slide Ks4-... Armature. 5a5 - Figure 4 31 33b 33a - 33b3334

Claims

[Scope of utility model registration request]

(1) A valve housing with a fuel injection port and a valve seat at the tip and a guide hole passing through the shaft center, and a valve housing that is slidably inserted into the guide hole and normally closes the fuel injection port with a compression spring. an on-off valve, an armature coupled to the rear end of the on-off valve, a fixed magnetic core that faces the rear end surface of the armature through a certain gap and has a fuel passage penetrating through the shaft center; It consists of an electromagnetic coil attached to the periphery and a magnetic housing that couples the valve housing and the fixed magnetic core, and opens the opening/closing valve and injects pressurized fuel while receiving a valve opening signal to the electromagnetic coil. In the electromagnetic fuel injector, the on-off valve is integrally formed with a spherical valve element and a hollow cylindrical slide part that slides in contact with the guide hole, and the outer diameter of the spherical surface of the valve element is The electromagnetic fuel injector is characterized in that the diameter of the sliding portion is not larger than the outer diameter of the sliding portion, and the inside of the sliding portion has openings at both front and rear ends to form a fuel passage.

(2) The electromagnetic fuel injector according to claim 1, wherein the on-off valve comprises a valve element portion and a slide portion made of a common material such as titanium, titanium alloy, or ceramic.

(3) The electromagnetic fuel injector according to claim 1, wherein the on-off valve comprises a valve element portion and a slide portion, one of which is made of titanium or a titanium alloy, and the other of which is made of ceramic.

(4) The on-off valve includes a valve part and a slide part, one of which is made of titanium, titanium alloy, or ceramic, and the other of which is made of iron-based material. Claim 1 of the Utility Model Registration Claim electromagnetic fuel injector.