JPS5971957U - fuel injection nozzle - Google Patents
fuel injection nozzleInfo
- Publication number
- JPS5971957U JPS5971957U JP16738582U JP16738582U JPS5971957U JP S5971957 U JPS5971957 U JP S5971957U JP 16738582 U JP16738582 U JP 16738582U JP 16738582 U JP16738582 U JP 16738582U JP S5971957 U JPS5971957 U JP S5971957U
- Authority
- JP
- Japan
- Prior art keywords
- fuel injection
- needle valve
- nozzle
- injection nozzle
- nozzle hole
- 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
Landscapes
- Fuel-Injection Apparatus (AREA)
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
第1図は従来のホール型燃料噴射ノズルを示す全体断面
図、第2,3図は燃料の噴射率特性を示すグラフ、第4
図は従来のポペット型燃料噴射ノズルを示す要部断面図
、第5〜9図はこの考案に係る燃料噴射ノズルの一実施
例を示す図であり、第5図はその要部断面図、第6図は
そのニードルバルブが噴孔を閉止している状態を示す部
分断面図、第7図は第6図の■−■矢視断面図、第8図
はそのニードルバルブのリフト初期の状態を示す部分断
面図、第9図はそのリフト最大時の状態を示す部分断面
図である。
32・・・・・・ノズルボディ、33・・・・・・噴孔
、34・・・・・・ニードルバルブ、40・・・・・・
シート面、41・・・・・・第1スロットル部、42・
・・・・・第2スロットル部、43・・・・・・先端傘
部、44・・・・・・溝、46・・・・・・シート部。
第1図 第
4図 第5図
第8図
第9図Figure 1 is an overall sectional view showing a conventional hole-type fuel injection nozzle, Figures 2 and 3 are graphs showing fuel injection rate characteristics, and Figure 4
Figure 5 is a cross-sectional view of the main part of a conventional poppet-type fuel injection nozzle, and Figures 5 to 9 are views showing an embodiment of the fuel injection nozzle according to this invention. Figure 6 is a partial sectional view showing the state where the needle valve closes the nozzle hole, Figure 7 is a sectional view taken along the ■-■ arrow in Figure 6, and Figure 8 shows the state of the needle valve at the initial stage of lift. FIG. 9 is a partial sectional view showing the state at maximum lift. 32... Nozzle body, 33... Nozzle hole, 34... Needle valve, 40...
Seat surface, 41...First throttle section, 42.
...Second throttle part, 43...Tip umbrella part, 44...Groove, 46...Seat part. Figure 1 Figure 4 Figure 5 Figure 8 Figure 9
Claims (1)
シート面の先端側に設けられ初期の燃料噴射量を視測す
る第1スロットル部と、噴孔より突出する末広がり状の
先端傘部と、を有するニードルバルブを備え、所定燃圧
下でニードルバルブがリフトして燃料を噴射する燃料噴
射ノズルにおいて、前記ニードルバルブの第1スロット
ル部ト先端傘部との間に、該ニードルバルブの最大リフ
ト量よりその軸方向長さの大きい第2スロットル部を形
成するとともに、該第2スロットル部の外周面または噴
孔内周面にその軸方向に延在する溝を形成したことを特
徴とする燃料噴射ノズル。a seat surface that sits on the seat part of the nozzle hole of the nozzle body;
The needle valve is equipped with a first throttle part that is provided on the front end side of the seat surface to visually observe the initial fuel injection amount, and a tapered end umbrella part that protrudes from the nozzle hole. In a fuel injection nozzle that injects fuel by lifting, a second throttle portion having an axial length larger than a maximum lift amount of the needle valve is formed between the first throttle portion and the tip umbrella portion of the needle valve. A fuel injection nozzle characterized in that a groove extending in the axial direction is formed on the outer circumferential surface of the second throttle portion or the inner circumferential surface of the nozzle hole.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16738582U JPS5971957U (en) | 1982-11-04 | 1982-11-04 | fuel injection nozzle |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16738582U JPS5971957U (en) | 1982-11-04 | 1982-11-04 | fuel injection nozzle |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5971957U true JPS5971957U (en) | 1984-05-16 |
Family
ID=30366211
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16738582U Pending JPS5971957U (en) | 1982-11-04 | 1982-11-04 | fuel injection nozzle |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5971957U (en) |
-
1982
- 1982-11-04 JP JP16738582U patent/JPS5971957U/en active Pending
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