JPS5945278U

JPS5945278U - Air assist injector for fuel-injected internal combustion engines

Info

Publication number: JPS5945278U
Application number: JP14074582U
Authority: JP
Inventors: 実岩田
Original assignee: トヨタ自動車株式会社
Priority date: 1982-09-17
Filing date: 1982-09-17
Publication date: 1984-03-26

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図ハ従来のエアア
シストインジェクタを取付けた状態を示す一部ブロック
図を含む略示断面図、第４図は本考案に係る燃料噴射式
内燃機関のエアアシストインジェクタを示す断面図、第
５図は同実施例に係るエアアシストインジェクタを取付
けた状態を示す第３図と同様の略示断面図、第６図およ
び第７図は本考案の第２および第３実施例の要部　　２
を示す断面図である。１０・・・エアアシストインジェクタ、１０Ａ・・・イ
ンジェクタ本体、１２・・・エンジン、１４・・・吸気
マニホルド、１６・・・取付孔、１８・・・燃料噴射口
、２０・・・アシストエア導入部、２２・・・気流ノズ
ル、２４・・・空気取入孔、２６・・・アダプタ、５６
・・・密閉空間、５８・・・第２のアダプタ、６０・・
・空気取入管、５８Ａ・・・フランジ、６２．６６・・
・シール部、６２Ａ、６４・・・オー刃ング、６゛８・
・・空気分配管、７０・・・ゴムホース。Fig. 1 is a cross-sectional view showing a conventional air-assisted injector, Fig. 2 is an enlarged cross-sectional view of the same essential parts, and Fig. 3 is a schematic cross-sectional view including a partial block diagram showing the conventional air-assisted injector in an installed state. 4 is a sectional view showing an air assist injector for a fuel injection internal combustion engine according to the present invention, and FIG. 5 is a schematic diagram similar to FIG. 3 showing the air assist injector according to the same embodiment installed. The sectional views, FIGS. 6 and 7, show the main parts of the second and third embodiments of the present invention.
FIG. 10...Air assist injector, 10A...Injector body, 12...Engine, 14...Intake manifold, 16...Mounting hole, 18...Fuel injection port, 20...Assist air introduction Part, 22... Air flow nozzle, 24... Air intake hole, 26... Adapter, 56
... Closed space, 58 ... Second adapter, 60...
・Air intake pipe, 58A...Flange, 62.66...
・Seal part, 62A, 64... O blade ring, 6゛8・
...Air distribution pipe, 70...Rubber hose.

Claims

[Scope of utility model registration request]

(1) An assist air introduction portion is formed near the fuel injection port, and an airflow nostle is formed in front of the fuel injection port;
an adapter provided with an air intake hole formed on a peripheral wall to allow assist air to be taken in from the surroundings into the assist air introduction portion, and the assist air introduced through the air intake hole; The assist air introduced in the
In an air assist injector for a fuel injection type internal combustion engine, the air assist injector promotes atomization of the fuel by ejecting the fuel from the air nozzle together with the fuel, at least the air excluding the area in front of the air nozzle outside the adapter. a cylindrical second adapter that surrounds the intake hole and forms a sealed space inside that communicates with the assist air introduction part through the air intake hole of the adapter; an air intake pipe for introducing assist air into the sealed space, and the air assist injector for a fuel injection internal combustion engine is installed by inserting and fixing the second adapter into a mounting hole on the engine side. .

(2) A flange extending in the inner diameter direction is formed on the inner periphery of the tip of the second adapter, and a part of the outer periphery of the tip of the adapter is brought into contact with the flange via a sealing material, and the proximal end of the second adapter The utility model registration claim is characterized in that the inner periphery of the second adapter is brought into contact with the outer periphery of the injector main body via a sealing material, and further, the outer periphery of the second adapter is attached to the mounting hole on the engine side via the sealing material. An air assist injector for a fuel injection internal combustion engine according to scope 1. .

(3) A request for registration of a utility model characterized in that the sealing material between the outer periphery of the tip of the adapter and the second adapter is an O-ring interposed between the outer periphery of the adapter and the inner periphery of the second adapter. An air assist injector for a fuel injection internal combustion engine according to item 2.