JPH01160168U - - Google Patents
Info
- Publication number
- JPH01160168U JPH01160168U JP5665188U JP5665188U JPH01160168U JP H01160168 U JPH01160168 U JP H01160168U JP 5665188 U JP5665188 U JP 5665188U JP 5665188 U JP5665188 U JP 5665188U JP H01160168 U JPH01160168 U JP H01160168U
- Authority
- JP
- Japan
- Prior art keywords
- needle
- damper chamber
- forming member
- rod portion
- lift direction
- 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
- 238000002347 injection Methods 0.000 claims description 5
- 239000007924 injection Substances 0.000 claims description 5
- 239000000446 fuel Substances 0.000 claims 3
Description
第１図および第２図はこの考案の一実施例を示
すもので、第１図はその一部省略断面図、第２図
は要部の拡大断面図、第３図、第４図はそれぞれ
この考案の他の実施例を示す第２図と同様の断面
図である。
１……ノズルホルダ、４……ノズル本体、７…
…ばね、１２……弁座、１４……噴射孔、１５…
…ニードル、２０……ロツド部、２１……弁座、
２３……ダンパ室形成部材、２５……ダンパ室、
２７，３１……リーク溝（隙間）。
Figures 1 and 2 show an embodiment of this invention, with Figure 1 being a partially omitted sectional view, Figure 2 being an enlarged sectional view of the main parts, and Figures 3 and 4 respectively. FIG. 2 is a sectional view similar to FIG. 2 showing another embodiment of the invention; 1... Nozzle holder, 4... Nozzle body, 7...
...Spring, 12...Valve seat, 14...Injection hole, 15...
...needle, 20...rod part, 21...valve seat,
23... damper chamber forming member, 25... damper chamber,
27, 31...Leak groove (gap).
Claims (1)
射孔を開くニードルと、このニードルを前記噴射
孔を閉じる方向へ付勢する戻しばねと、前記ニー
ドルのリフト方向の先方にニードルと対向して配
置され、ニードルとの間にダンパ室が形成される
ダンパ室形成部材とを備え、前記ニードルのリフ
ト方向の先端部に前記ダンパ室形成部材を隙間を
もつて貫通するロツド部が設けられた燃料噴射ノ
ズルにおいて、前記ロツド部と前記ダンパ室形成
部材との間の隙間が前記ニードルのリフト方向に
おける先端側で小さく、後端側で大きくなるよう
、前記ロツド部のリフト方向と直交する方向にお
ける断面積をリフト方向の先端側で大きく、後端
側で小さくしたことを特徴とする燃料噴射ノズル
。 a needle that is lifted by the pumped fuel to open the injection hole; a return spring that biases the needle in a direction to close the injection hole; , a damper chamber forming member having a damper chamber formed between the needle and the needle, and a fuel injection nozzle provided with a rod portion that penetrates the damper chamber forming member with a gap at the tip end of the needle in the lift direction. In this step, the cross-sectional area of the rod portion in the direction orthogonal to the lift direction is set so that the gap between the rod portion and the damper chamber forming member is smaller at the tip side in the lift direction of the needle and becomes larger at the rear end side. A fuel injection nozzle characterized by being larger at the tip side in the lift direction and smaller at the rear end side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5665188U JPH01160168U (en) | 1988-04-28 | 1988-04-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5665188U JPH01160168U (en) | 1988-04-28 | 1988-04-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01160168U true JPH01160168U (en) | 1989-11-07 |
Family
ID=31282522
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5665188U Pending JPH01160168U (en) | 1988-04-28 | 1988-04-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01160168U (en) |
-
1988
- 1988-04-28 JP JP5665188U patent/JPH01160168U/ja active Pending