JPS59196578U

JPS59196578U - Ball seat type air assist injector for fuel-injected internal combustion engines

Info

Publication number: JPS59196578U
Application number: JP9067383U
Authority: JP
Inventors: 氏橋　通明; 実岩田; 辰雄酒井; 川島　豊
Original assignee: トヨタ自動車株式会社; 株式会社デンソー
Priority date: 1983-06-14
Filing date: 1983-06-14
Publication date: 1984-12-27

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]

第１図は従来のエアアシストインジェクタを示す断面図
、第２図は同要部の拡大断面図、第３図はエアアシスト
インジェクタにおける気流ノズルと燃料噴射口間の距離
と噴霧された燃料の平均粒径との関係を示す線図、第４
図はエアアシストイ　　　−ンジエクタにおける気流ノ
ズルと燃料噴射口間の距離とノズル直径との関係を示す
線図、第５図は本考案に係る燃料噴射式内燃機関のボー
ルシート型エアアシストインジェクタの実施例を示す第
２図と同様の断面図、第６図は第５図のＶＩ−ＶＩ線相
当部分の断面図である。４０・・・インジェクタ、４０Ａ・・・インジェクタ本
体、４２・・・燃料噴射口、４４・・・アシストエア導
入部、４６・・・気流ノズル、４８・・・空気取入孔、
５０・・・取付孔、５２・・・アダブ′、′、５４・・
・外側筒状部、５６・・・空気取入部、５８・・・内側
筒状部、６０・・・輪状溝。Figure 1 is a cross-sectional view of a conventional air-assisted injector, Figure 2 is an enlarged cross-sectional view of the same essential parts, and Figure 3 is the distance between the air nozzle and fuel injection port in the air-assisted injector and the average amount of fuel sprayed. Diagram showing the relationship with particle size, 4th
The figure is a diagram showing the relationship between the distance between the airflow nozzle and the fuel injection port and the nozzle diameter in an air-assisted injector, and Figure 5 shows the implementation of the ball-seat type air-assisted injector for a fuel-injected internal combustion engine according to the present invention. FIG. 6 is a sectional view similar to FIG. 2 showing an example, and FIG. 6 is a sectional view of a portion corresponding to the line VI-VI in FIG. 5. 40... Injector, 40A... Injector main body, 42... Fuel injection port, 44... Assist air introduction part, 46... Air flow nozzle, 48... Air intake hole,
50...Mounting hole, 52...Adab', ', 54...
- Outer cylindrical part, 56... Air intake part, 58... Inner cylindrical part, 60... Annular groove.

Claims

[Scope of utility model registration request]

(1) When fitted to the tip of the injector body, an assist air introduction section is formed near the fuel injection port, and an air flow nozzle located in front of the fuel injection port is formed on the peripheral wall, and the assist air introduction section is formed on the peripheral wall. and an air intake hole that allows assist air to be taken in from the surroundings, and an adapter that is inserted into a mounting hole formed on the engine side. In the ball seat type air assist injector for a fuel injection internal combustion engine, the ball seat type air assist injector for a fuel injection internal combustion engine is configured to promote atomization of fuel by ejecting assist air introduced into the assist air introduction part from the air flow nozzle together with fuel. is coaxially screwed into the outer cylindrical part provided with the air intake hole and the inner periphery of the outer cylindrical part, and is connected to the assist air introduction part, the air flow nozzle, and the inner periphery of the outer cylindrical part. an inner cylinder formed between the facing part and the assist air introduction part, and provided with a plurality of air intake parts communicating with the inner peripheral end of the outer cylindrical part of the air intake hole within a certain movement range in the axial direction of the injector main body; A hole seat type air assist injector for a fuel injection internal combustion engine, characterized by comprising a shaped part.

(2) - The inner peripheral end of the air intake hole on the side of the outer cylindrical part faces the outer peripheral end of the air intake part of the inner cylindrical body when the outer cylindrical part and the inner cylindrical part are screwed together. A ball seat type air assist injector for a fuel injection internal combustion engine according to claim 1, characterized in that the air assist injector has an annular groove.