JPH0454972U - - Google Patents
Info
- Publication number
- JPH0454972U JPH0454972U JP9753990U JP9753990U JPH0454972U JP H0454972 U JPH0454972 U JP H0454972U JP 9753990 U JP9753990 U JP 9753990U JP 9753990 U JP9753990 U JP 9753990U JP H0454972 U JPH0454972 U JP H0454972U
- Authority
- JP
- Japan
- Prior art keywords
- needle valve
- fuel
- fuel injection
- guide hole
- nozzle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000446 fuel Substances 0.000 claims description 18
- 238000002347 injection Methods 0.000 claims description 12
- 239000007924 injection Substances 0.000 claims description 12
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Fuel-Injection Apparatus (AREA)
Description
第１図はこの考案の一実施例を示す燃料噴射ノ
ズルの先端部位の断面図、第２図は第１図の矢
視図、第３図は第１図の燃料噴射ノズルのニード
ルバルブがリフトした状態を示す動作説明図、第
４図はこの考案の他の実施例を示す燃料噴射ノズ
ルの先端部位の断面図、第５図は第４図の燃料噴
射ノズルのニードルバルブがリフトした状態を示
す動作説明図、第６図は第４図の燃料噴射ノズル
に使用される芯出しピンの斜視図、第７図は第６
図の芯出しピンの変形例を示す斜視図、第８図は
従来例を示す燃料噴射ノズルの断面図、第９図は
第８図の燃料噴射ノズルの先端部位の断面図、第
１０図は同燃料噴射ノズルのニードルバルブがリ
フトした状態を示す動作説明図、第１１図は他の
従来例を示す燃料噴射ノズルの先端部位の断面図
である。
１１……ニードルバルブ、１３……ノズルチツ
プ（ノズルボデイ）、１５……噴射孔、４７……
シート面、６５……ガイド穴、６７，７７，８１
……芯出しピン（軸芯補正部材）、６９……底面
、７１……空間、７５……貫通孔（燃料導入通路
）、７９……凹溝（燃料導入通路）、８３……切
り欠き面（燃料導入通路）。
Figure 1 is a sectional view of the tip of a fuel injection nozzle showing an embodiment of this invention, Figure 2 is a view taken in the direction of the arrow in Figure 1, and Figure 3 is a lift of the needle valve of the fuel injection nozzle in Figure 1. FIG. 4 is a sectional view of the tip of the fuel injection nozzle showing another embodiment of this invention, and FIG. 5 shows the state in which the needle valve of the fuel injection nozzle shown in FIG. 4 is lifted. FIG. 6 is a perspective view of the centering pin used in the fuel injection nozzle shown in FIG. 4, and FIG.
FIG. 8 is a sectional view of a conventional fuel injection nozzle, FIG. 9 is a sectional view of the tip of the fuel injection nozzle shown in FIG. 8, and FIG. FIG. 11 is an operational explanatory diagram showing a state in which the needle valve of the fuel injection nozzle is lifted, and FIG. 11 is a sectional view of the tip portion of the fuel injection nozzle showing another conventional example. 11... Needle valve, 13... Nozzle chip (nozzle body), 15... Injection hole, 47...
Seat surface, 65...Guide hole, 67, 77, 81
... Centering pin (axis center correction member), 69 ... Bottom surface, 71 ... Space, 75 ... Through hole (fuel introduction passage), 79 ... Concave groove (fuel introduction passage), 83 ... Notch surface (Fuel introduction passage).
Claims (1)
着座可能に収納され、このニードルバルブが燃料
圧力によつてリフトして前記ノズルボデイのシー
ト面に設けられた噴孔から燃料が噴射される燃料
噴射ノズルにおいて、前記ニードルバルブの先端
部にニードルバルブの軸長方向に延長されるガイ
ド穴を設け、このガイド穴にシート面側に弾性的
に付勢される軸芯補正部材を移動可能に収納し、
前記軸芯補正部材とガイド穴の底面との間の空間
に、ノズルボデイとニードルバルブとの間の燃料
を少なくともニードルバルブのリフト時に導入可
能な燃料導入通路を設けたことを特徴とする燃料
噴射ノズル。 In the fuel injection nozzle, a needle valve is housed in a nozzle body so as to be seated on a seat surface, and the needle valve is lifted by fuel pressure to inject fuel from a nozzle hole provided in the seat surface of the nozzle body. A guide hole extending in the axial direction of the needle valve is provided at the tip of the needle valve, and an axis correction member elastically biased toward the seat surface is movably housed in the guide hole.
A fuel injection nozzle characterized in that a fuel introduction passage is provided in a space between the axis correction member and the bottom surface of the guide hole, through which fuel between the nozzle body and the needle valve can be introduced at least when the needle valve is lifted. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9753990U JPH0454972U (en) | 1990-09-19 | 1990-09-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9753990U JPH0454972U (en) | 1990-09-19 | 1990-09-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0454972U true JPH0454972U (en) | 1992-05-12 |
Family
ID=31837995
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9753990U Pending JPH0454972U (en) | 1990-09-19 | 1990-09-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0454972U (en) |
-
1990
- 1990-09-19 JP JP9753990U patent/JPH0454972U/ja active Pending
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