JPH03116765U - - Google Patents
Info
- Publication number
- JPH03116765U JPH03116765U JP2497790U JP2497790U JPH03116765U JP H03116765 U JPH03116765 U JP H03116765U JP 2497790 U JP2497790 U JP 2497790U JP 2497790 U JP2497790 U JP 2497790U JP H03116765 U JPH03116765 U JP H03116765U
- Authority
- JP
- Japan
- Prior art keywords
- valve
- needle valve
- fitted
- sealing mechanism
- thrust piece
- 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 6
- 238000002347 injection Methods 0.000 claims description 4
- 239000007924 injection Substances 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims 1
- 230000000630 rising effect Effects 0.000 claims 1
Landscapes
- Fuel-Injection Apparatus (AREA)
Description
第１図は本考案の燃料噴射弁のシール機構の要
部の拡大断面図、第２図は同平面図である。第３
図は一般の燃料噴射弁の例を示す断面図、第４図
は同側面図、第５図は燃料噴射弁のシール機構の
第１図と同様な部分を示す拡大断面図である。
１……下部本体、１ａ……シリンダ、１ｂ……
拡大部、１ｃ……弁座部、２……ニードル弁、２
ａ……拡大部、２ｂ……弁部、２ｃ……環状部、
２ｄ……当り面、３……スラストピース、３ａ…
…小径部、３ｂ……筒状部、３ｃ……当り面、４
……上部本体、５……スリーブ、８……燃料通路
、９……弁室、２０……弁部、２１……溝部、２
２……溝部、２３……当り面。
FIG. 1 is an enlarged sectional view of a main part of a sealing mechanism of a fuel injection valve according to the present invention, and FIG. 2 is a plan view thereof. Third
The figure is a sectional view showing an example of a general fuel injection valve, FIG. 4 is a side view of the same, and FIG. 5 is an enlarged sectional view showing a portion of the seal mechanism of the fuel injection valve similar to that in FIG. 1. 1... Lower body, 1a... Cylinder, 1b...
Enlarged part, 1c... Valve seat part, 2... Needle valve, 2
a... Enlarged part, 2b... Valve part, 2c... Annular part,
2d...Attaching surface, 3...Thrust piece, 3a...
...Small diameter part, 3b...Cylindrical part, 3c...Abutment surface, 4
... Upper body, 5 ... Sleeve, 8 ... Fuel passage, 9 ... Valve chamber, 20 ... Valve section, 21 ... Groove section, 2
2...Groove portion, 23...Abutment surface.
Claims (1)
シリンダ部の上端部に設けたスラストピースによ
つて上昇位置を規制され、弁座方向に弾圧された
ニードル弁を有し、該ニードル弁に設けた通路の
上端に前記スラストピースの下端より突出した筒
状部が嵌入され、前記ニードル弁の上端面と前記
筒状部の周囲に形成された面との間にシール機構
が形成されており、該シール機構は燃料通路を囲
む環状の弁部と、この弁部の外周に溝部を介して
当り面が設けられ、該当り面に逃し溝を設けてな
る燃料噴射弁。 The needle valve is fitted into a cylinder part provided inside the main body, the rising position is regulated by a thrust piece provided at the upper end of the cylinder part, and the needle valve is pressed toward the valve seat. A cylindrical part protruding from the lower end of the thrust piece is fitted into the upper end of the passageway, and a sealing mechanism is formed between the upper end surface of the needle valve and a surface formed around the cylindrical part, The sealing mechanism is a fuel injection valve comprising an annular valve portion surrounding a fuel passage, a contact surface provided on the outer periphery of the valve portion via a groove portion, and a relief groove provided on the corresponding surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2497790U JPH03116765U (en) | 1990-03-14 | 1990-03-14 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2497790U JPH03116765U (en) | 1990-03-14 | 1990-03-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03116765U true JPH03116765U (en) | 1991-12-03 |
Family
ID=31527922
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2497790U Pending JPH03116765U (en) | 1990-03-14 | 1990-03-14 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03116765U (en) |
-
1990
- 1990-03-14 JP JP2497790U patent/JPH03116765U/ja active Pending