JPH0359471U

JPH0359471U -

Info

Publication number: JPH0359471U
Application number: JP11876689U
Authority: JP
Priority date: 1989-10-12
Filing date: 1989-10-12
Publication date: 1991-06-12

Description

[Brief explanation of the drawing]

第１図は本考案の第１実施例に係る内燃機関の
燃料噴射弁の要部断面図、第２図は第１図の燃料
噴射弁のアダプタ部の底面図、第３図は第１図の
−線に沿う要部断面図、第４図は本考案の第
２実施例に係る内燃機関の燃料噴射弁の要部断面
図、第５図は第４図の燃料噴射弁のアダプタ部の
底面図、第６図は本考案の第３実施例に係る内燃
機関の燃料噴射弁の要部概略断面図、第７図は本
考案の第４実施例に係る内燃機関の燃料噴射弁の
要部概略断面図、第８図は従来の２ホール型燃料
噴射弁の部分断面図、第９図は従来の単孔型燃料
噴射弁の部分断面図、である。１１，３３，４４，５４……燃料噴射弁、１２
……噴射弁本体、１５，３１，４１，５１……燃
料噴孔、１６，３４……アダプタ、１７……圧力
調整室、１８ａ，１８ｂ，３２，４２ａ，４２ｂ
，５２……燃料噴射通路、１９……分岐部、２０
……噴射弁軸、２１，３７……ハウジング部材、
２２，３６……エア通路、２３，３５……エアパ
イプ、２６，２８，３８，４５ａ，４５ｂ，５５
……アシストエア通路、２７ａ，２７ｂ，４０，
４３ａ，４３ｂ，５３……通路壁面、２８ａ，２
８ｂ，３９，４６ａ，４６ｂ，５６……開口部。 FIG. 1 is a sectional view of essential parts of a fuel injection valve for an internal combustion engine according to a first embodiment of the present invention, FIG. 2 is a bottom view of an adapter portion of the fuel injection valve of FIG. 1, and FIG. FIG. 4 is a cross-sectional view of the main part of the fuel injection valve for an internal combustion engine according to the second embodiment of the present invention, and FIG. 5 is a cross-sectional view of the main part of the fuel injection valve of FIG. A bottom view, FIG. 6 is a schematic sectional view of main parts of a fuel injection valve for an internal combustion engine according to a third embodiment of the present invention, and FIG. 7 is a main part of a fuel injection valve for an internal combustion engine according to a fourth embodiment of the present invention. FIG. 8 is a partial cross-sectional view of a conventional two-hole fuel injection valve, and FIG. 9 is a partial cross-sectional view of a conventional single-hole fuel injection valve. 11, 33, 44, 54...Fuel injection valve, 12
... Injection valve body, 15, 31, 41, 51 ... Fuel injection hole, 16, 34 ... Adapter, 17 ... Pressure adjustment chamber, 18a, 18b, 32, 42a, 42b
, 52...Fuel injection passage, 19...Branch portion, 20
... Injection valve shaft, 21, 37 ... Housing member,
22, 36... Air passage, 23, 35... Air pipe, 26, 28, 38, 45a, 45b, 55
...assist air passage, 27a, 27b, 40,
43a, 43b, 53... passage wall surface, 28a, 2
8b, 39, 46a, 46b, 56... opening.

Claims

[Scope of utility model registration request]

Fuel for an internal combustion engine in which fuel from a fuel injection hole is injected through a fuel injection passage, and the injected fuel passes through a position biased toward one of the passage walls of the fuel injection passage when passing through the fuel injection passage. A fuel injection valve for an internal combustion engine, characterized in that an assist air passage is opened in a passage wall surface of the fuel injection passage on the side toward which the injected fuel passes.