JPH027362U

JPH027362U -

Info

Publication number: JPH027362U
Application number: JP8526988U
Authority: JP
Priority date: 1988-06-28
Filing date: 1988-06-28
Publication date: 1990-01-18

Description

【図面の簡単な説明】[Brief explanation of drawings]

第１図〜第６図は本考案のインジエクタの燃料
噴射部構造の実施例を示し、第１図はその一実施
例のインジエクタの全体構造を示す縦断面図、第
２図はその要部の拡大断面図、第３図は第２図の
―線断面図、第４図及び第５図はこの実施例
における噴射孔の他の態様を示す断面図、第６図
は本インジエクタの機関への取付け態様を示す図
、第７図は本考案の他の実施例の部分断面図、第
８図は本考案の変形例を示す部分断面図である。
第９図は従来のインジエクタにおける燃料噴射部
の構造を示す模式断面図である。３……弁ハウジング、３ａ……ガイド孔、３ｂ
……弁座、３ｃ，３ｆ……弁孔、４……噴射孔板
、４ａ，４ｂ……噴射孔、７……弁体面、１０…
…弁部材、１３……流量絞り孔、１５……乱流室
、２６……戻しばね。 1 to 6 show an embodiment of the structure of the fuel injection part of the injector of the present invention, FIG. 1 is a longitudinal cross-sectional view showing the overall structure of the injector according to the embodiment, and FIG. 2 shows the main parts thereof. FIG. 3 is an enlarged sectional view, FIG. 3 is a sectional view taken along the line -- in FIG. 2, FIGS. 4 and 5 are sectional views showing other aspects of the injection hole in this embodiment, and FIG. FIG. 7 is a partial cross-sectional view of another embodiment of the present invention, and FIG. 8 is a partial cross-sectional view of a modification of the present invention.
FIG. 9 is a schematic cross-sectional view showing the structure of a fuel injection part in a conventional injector. 3...Valve housing, 3a...Guide hole, 3b
... Valve seat, 3c, 3f... Valve hole, 4... Injection hole plate, 4a, 4b... Injection hole, 7... Valve body surface, 10...
... Valve member, 13 ... Flow rate restricting hole, 15 ... Turbulence chamber, 26 ... Return spring.

Claims

【実用新案登録請求の範囲】 (1) 先端に弁孔と弁座とを備え軸心部を貫通す
るガイド孔を有する弁ハウジングと；先端に前記
弁座に当接する弁体面を有し、前記弁ハウジング
のガイド孔に摺動可能に内挿され常時は戻しばね
によつて前記弁座方向に付勢される弁体と；を備
えてなる内燃機関用インジエクタにおいて、前記弁ハウジングの前面に、前記弁ハウジング
の弁孔に連通する噴射孔を開設してなる噴射孔板
が設置され、前記弁ハウジングの弁孔は軸心部に
配した最小流路断面を有する流量絞り孔と、該流
量絞り孔に続き流路断面積が拡大された乱流室と
からなり、かつ、前記噴射孔板の噴射孔は前記流
量絞り孔とは偏心してなる、ことを特徴とするイ
ンジエクタの燃料噴射部構造。 (2) 先端に弁孔と弁座とを備え軸心部を貫通す
るガイド孔を有する弁ハウジングと；先端に前記
弁座に当接する弁体面を有し、前記弁ハウジング
のガイド孔に摺動可能に内挿され常時は戻しばね
によつて前記弁座方向に付勢される弁体と；を備
えてなる内燃機関用インジエクタにおいて、前記弁ハウジングの前面に、前記弁ハウジング
の弁孔に連通する噴射孔を開設してなる噴射孔板
が設置され、前記弁孔と噴射孔とは同一軸線上に
配されるとともに、該噴射孔は最小流路断面を有
する流量絞り孔とされてなる、ことを特徴とするインジエクタの燃料噴射部構造
。[Claims for Utility Model Registration] (1) A valve housing having a valve hole and a valve seat at its tip and a guide hole passing through the shaft center; having a valve body surface abutting the valve seat at its tip; An injector for an internal combustion engine, comprising: a valve body slidably inserted into a guide hole of a valve housing and normally biased toward the valve seat by a return spring; An injection hole plate having injection holes communicating with the valve hole of the valve housing is installed, and the valve hole of the valve housing has a flow restrictor hole having a minimum flow passage cross section arranged at the axial center, and the flow restrictor. 1. A fuel injection part structure for an injector, comprising a turbulent flow chamber with an enlarged flow passage cross-sectional area following the hole, and the injection hole of the injection hole plate is eccentric with respect to the flow rate restriction hole. (2) a valve housing having a valve hole and a valve seat at the tip and a guide hole passing through the shaft center; a valve body surface that comes into contact with the valve seat at the tip; the valve housing slides into the guide hole of the valve housing; An injector for an internal combustion engine, comprising: a valve body that is inserted into the valve body and normally biased toward the valve seat by a return spring; An injection hole plate is installed with injection holes formed therein, the valve hole and the injection hole are arranged on the same axis, and the injection hole is a flow rate restricting hole having a minimum flow path cross section. A fuel injection part structure of an injector characterized by the following.