JPS58100267U

JPS58100267U - Internal combustion engine fuel injection system

Info

Publication number: JPS58100267U
Application number: JP19317381U
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) [Abstract] 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図はメ゛−タリ
ング時の断面図、第２図は第１図■円内の拡大図、第３
図は圧縮空気導入時の断面図、第４図は圧縮時の断面図
、第５図は噴射時の断面図である。１はインジェクタ本体、１ａは燃料室、１ｂは通路、Ｉ
Ｃはアトマイザ室、１ｄは空気室、１ｅは噴孔、１ｇは
通路、４はチェック弁、５はアトマイザ、７はピストン
、７Ｃは圧縮ばね、７ｄはニードル。The drawings show one embodiment of this invention, and Fig. 1 is a sectional view during metering, Fig. 2 is an enlarged view of the circle in Fig. 1, and Fig. 3 is an enlarged view of the circle in Fig. 1.
The figure is a cross-sectional view when compressed air is introduced, FIG. 4 is a cross-sectional view during compression, and FIG. 5 is a cross-sectional view during injection. 1 is the injector body, 1a is the fuel chamber, 1b is the passage, I
C is an atomizer chamber, 1d is an air chamber, 1e is a nozzle hole, 1g is a passage, 4 is a check valve, 5 is an atomizer, 7 is a piston, 7C is a compression spring, and 7d is a needle.

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.
Piston 7 that pushes out the compressed air in d to the atomizer chamber 1C
The fuel chamber 1a is communicated with an atomizer chamber IC through a passage 1b, and the compressed air and fuel are mixed by an atomizer 5 provided in the atomizer chamber 1C. The piston 7 is biased by a compression spring 7C to close the nozzle hole 1e at the tip of the injector body 1, and rises as the pressure of the fuel and air mixture rises to open the nozzle hole 1e. A fuel injection device for an internal combustion engine, in which the upper end of a needle 7d is slidably supported, and a passage 1g is provided on the front end side of an injector body 1 for introducing compressed air in a cylinder into an air chamber 1d during a compression process.