JPS6119671U - fuel injection nozzle - Google Patents
fuel injection nozzleInfo
- Publication number
- JPS6119671U JPS6119671U JP10453484U JP10453484U JPS6119671U JP S6119671 U JPS6119671 U JP S6119671U JP 10453484 U JP10453484 U JP 10453484U JP 10453484 U JP10453484 U JP 10453484U JP S6119671 U JPS6119671 U JP S6119671U
- Authority
- JP
- Japan
- Prior art keywords
- piston
- fuel injection
- movement
- fuel
- injection 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
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〜第６図のこの考案の実施例に係わり、第１図は
燃料噴射ノズルの断面図、第２図は第１図の要部の拡大
された断面図、第３図ａ ” ｃはアイドルおよび部分
負荷時における作動説明図、第４図ａ ” ｃは高負荷
時における作動説明図、第５図ａは燃料噴射圧の変化を
示す説明図、第５図ｂはニードルバルブのリフト変化を
示す説明図、第６図ａ ”− ｃはそれぞれアイドリン
グ、部分負荷、高負荷における燃料噴射率を示す説明図
、第７図は従来の燃料噴射ノズルの断面図である。
（図面の主要部を表わす符号の・説明）、１・・・ノズ
ルボデイ、１１・・・ニ一ドルバルブ、２７・・・第１
ピストン、３５・・・第２ピストン、４９・・・周溝（
燃料案内部）、５１・・・洟絡孔、５５・・・燃料スピ
ル通路、５７・・・連絡孔。Regarding the embodiments of this invention shown in FIGS. 1 to 6, FIG. 1 is a sectional view of the fuel injection nozzle, FIG. 2 is an enlarged sectional view of the main part of FIG. 1, and FIG. is an explanatory diagram of the operation at idle and partial load, Figure 4 a `` c is an explanatory diagram of the operation at high load, Figure 5 a is an explanatory diagram showing changes in fuel injection pressure, and Figure 5 b is an explanatory diagram of the needle valve lift. Figures 6a to 6c are explanatory diagrams showing fuel injection rates at idling, partial load, and high load, respectively, and Figure 7 is a cross-sectional view of a conventional fuel injection nozzle. 1... Nozzle body, 11... Needle valve, 27... First
Piston, 35...Second piston, 49...Circumferential groove (
51... Fuel spill passageway, 57... Communication hole.
Claims (1)
ボデイ内に移動自在に収納された二一ドルバルブとを有
するディーゼル機関の燃料噴射ノズルにおいて、前記ニ
ードルバルブの開弁時の移動方向側にニードルバルブの
移動に伴って移動し、この移動途中に燃料導入通路に通
じる連絡孔と燃料スピル通路に通じる連絡孔とを連通可
能にする燃料案内部を備えた第１ピストンを配設し、こ
の第１ピストンのどの移動位置においても前記連通を高
負荷時に遮断する第２ピストンを運転状態に応じて第１
ピストンに沿って移動可能に設けたことを特徴とする燃
料噴射ノズル。In a fuel injection nozzle for a diesel engine, which has a nozzle body with a nozzle hole formed at its tip and a twenty-one dollar valve movably housed in the nozzle body, the needle valve is disposed on the side in the direction of movement of the needle valve when the needle valve is opened. A first piston is provided that moves with the movement of the first piston, and includes a fuel guide portion that enables communication between a communication hole communicating with the fuel introduction passage and a communication hole communicating with the fuel spill passage during this movement. At any movement position of the piston, the second piston, which cuts off the communication under high load, is switched to the first piston depending on the operating state.
A fuel injection nozzle characterized in that it is provided movably along a piston.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10453484U JPS6119671U (en) | 1984-07-12 | 1984-07-12 | fuel injection nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10453484U JPS6119671U (en) | 1984-07-12 | 1984-07-12 | fuel injection nozzle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6119671U true JPS6119671U (en) | 1986-02-04 |
Family
ID=30663882
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10453484U Pending JPS6119671U (en) | 1984-07-12 | 1984-07-12 | fuel injection nozzle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6119671U (en) |
-
1984
- 1984-07-12 JP JP10453484U patent/JPS6119671U/en active Pending
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