JPS616673U

JPS616673U - Diesel engine fuel injection nozzle

Info

Publication number: JPS616673U
Application number: JP9026984U
Authority: JP
Inventors: 昭夫山口
Original assignee: いすゞ自動車株式会社
Priority date: 1984-06-19
Filing date: 1984-06-19
Publication date: 1986-01-16

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図は本考案に係る燃料噴射ノズルの一実施例を示す
縦断面図、第２図叫第１図の■一■線矢視断面図、第３
図は第１図のパッキンが圧縮されたときの状況を示す部
分拡大断面因、第４図、第５図、第６図は本考案の他の
実施例を示す縦断面図、第７図は従来の燃料噴射ノズル
の縦断面図である。図中、１はシリンダヘッド、２はノズル本体、３は燃焼
室、４はヒートシ二ルド、８はノズノＪ本体の先端晶、
、１０はパッキン、１１は突出部、１３は突起部、１７
は副噴孔、１８は内周面、１９−は環状溝、２０は段部
、Ｊは副噴霧である。Fig. 1 is a longitudinal sectional view showing an embodiment of the fuel injection nozzle according to the present invention, Fig. 2 is a sectional view taken along the line
The figure is a partially enlarged cross-sectional view showing the situation when the packing in Figure 1 is compressed, Figures 4, 5, and 6 are longitudinal cross-sectional views showing other embodiments of the present invention, and Figure 7 is a FIG. 3 is a longitudinal cross-sectional view of a conventional fuel injection nozzle. In the figure, 1 is the cylinder head, 2 is the nozzle body, 3 is the combustion chamber, 4 is the heat shield, 8 is the tip of the nozzle J body,
, 10 is a packing, 11 is a protrusion, 13 is a protrusion, 17
18 is a sub-nozzle hole, 18 is an inner circumferential surface, 19- is an annular groove, 20 is a stepped portion, and J is a sub-spray.

Claims

[Claims for Utility Model Registration] (1) A heat shield is provided between the tip of the nozzle body having the sub-nozzle hole and the cylinder head, and a heat shield is provided between the heat shield and the tip surface of the nozzle body. A diesel engine characterized in that it is provided with an annular packing that is compressed and is also provided with a positioning part at a contact area between the packing and a nozzle body or a heat shield surrounding the packing in order to restrict movement of the packing in the radial direction. Engine fuel injection nozzle. {2} The positioning portion is formed of protrusions that are provided along the outer circumferential surface of the packing at appropriate intervals and protrude in the radial direction from the outer circumferential surface so as to contact the inner circumferential side surface of the heat shield. A fuel injection nozzle for a diesel engine according to claim 1 of the utility model registration claim. (3) The diesel engine fuel according to claim 1, wherein the positioning portion comprises an inner peripheral surface portion of the heat shield formed in a conical shape so as to guide the packing from the outer peripheral side of the nozzle body. injection nozzle. (4) Request for registration of a utility model in which the positioning portion comprises an annular groove formed on the inner bottom surface of the heat shield and a protruding portion formed in an annular shape on the heat shield side surface of the packing and fitting into the annular groove. A fuel injection nozzle for a diesel engine according to item 1. (5) Fuel injection for a diesel engine according to claim 1, wherein the positioning portion comprises a stepped portion formed in an annular shape on the outer edge of the tip surface of the nozzle body to fit the packing therein. Noz