JPS58100266U

JPS58100266U - Internal combustion engine fuel injection system

Info

Publication number: JPS58100266U
Application number: JP19314981U
Authority: JP
Inventors: 浩樹佐藤
Original assignee: 株式会社小松製作所
Priority date: 1981-12-28
Filing date: 1981-12-28
Publication date: 1983-07-07

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]

図面はこの考案の一実施例を示し、第１図は断面図、第
２図は第１図■円内の拡大図である。１はインジェクタ本体、１ａは燃料室、１ｂ。１ｄ及び１ｅは通路、ＩＣは燃料溜、１ｇは空気室、１
ｈは受圧室、１１は噴孔、４はチェック弁、７はピスト
ン、７ｄは圧縮ばね。第１図第２図The drawings show an embodiment of this invention, with FIG. 1 being a sectional view and FIG. 2 being an enlarged view of the area in the circle in FIG. 1. 1 is the injector body, 1a is the fuel chamber, and 1b. 1d and 1e are passages, IC is a fuel reservoir, 1g is an air chamber, 1
h is a pressure receiving chamber, 11 is a nozzle hole, 4 is a check valve, 7 is a piston, and 7d is a compression spring. Figure 1 Figure 2

Claims

[Scope of utility model registration request]

The injector body 1 provided for each cylinder of the internal combustion engine is opened by the pressure of fuel supplied from an injection pump,
A check valve 4 introduces fuel into the fuel chamber 1a, and the pressure of the fuel introduced into the fuel chamber 1a lowers the fuel into the air chamber 1.
The compressed air in g is sent to the injector body 1 through the passage 1d.
The fuel chamber 1a is provided with a piston 7 that pushes out to the pressure receiving chamber 1h provided at the tip, and the fuel chamber 1a is provided on the tip side of the injection body 1 with a passage 1d that communicates the air chamber 1g and the pressure receiving chamber 1h, and one end is connected to the injection chamber 1a. A passage 1e opening between the nozzle hole 11 at the tip of the main body 1 and the pressure receiving chamber 1h is connected to a fuel reservoir 1C through a passage 1b, and the piston 7 is connected to the injector body 1 by a compression spring 7d.
It is biased to close the nozzle hole 11 at the tip and the opening on the tip side of the passage 1e, and rises as the pressure of the mixture of fuel and air in the pressure receiving chamber 1h increases, and the injection main body 1
The upper end of the needle 7C that opens the opening of the tip side passage 1e and the nozzle hole 11 is slidably supported, and the tip side of the injector body 1 has a passage that introduces compressed air in the cylinder into the air chamber 1g during the compression process. 1j. A fuel injection device for an internal combustion engine.