JPH0214467U - - Google Patents
Info
- Publication number
- JPH0214467U JPH0214467U JP9184988U JP9184988U JPH0214467U JP H0214467 U JPH0214467 U JP H0214467U JP 9184988 U JP9184988 U JP 9184988U JP 9184988 U JP9184988 U JP 9184988U JP H0214467 U JPH0214467 U JP H0214467U
- Authority
- JP
- Japan
- Prior art keywords
- tip
- nozzle
- fuel injection
- needle valve
- injection valve
- 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 9
- 239000007924 injection Substances 0.000 claims description 9
- 239000000446 fuel Substances 0.000 claims description 5
Landscapes
- Fuel-Injection Apparatus (AREA)
Description
第１図は本考案燃料噴射弁の実施例における全
体縦断面図、第２図は第１図のノズルチツプ先端
部分の拡大図、第３図は第２図のＡ矢視図、第４
図はニードル弁リフト変化による噴孔断面積の変
化図、第５図は従来の燃料噴射弁の縦断面図、第
６図は第５図のノズルチツプ部分の拡大図、第７
図は第６図の下方から見た図である。
１０１……噴射弁本体、１０２……ノズルチツ
プ、１０２ａ……中央噴孔、１０２ｂ……円周方
向の噴孔、１０２ｄ……シート面、１０２ｅ……
ニードル弁先端ピン周囲の間隙部、１０４……ニ
ードル弁、１０４ａ……ニードル弁先端ピン。
Fig. 1 is an overall longitudinal sectional view of an embodiment of the fuel injection valve of the present invention, Fig. 2 is an enlarged view of the tip of the nozzle tip in Fig. 1, Fig. 3 is a view taken in the direction of arrow A in Fig. 2, and Fig. 4 is an enlarged view of the tip of the nozzle tip in Fig.
The figure shows changes in the cross-sectional area of the nozzle hole due to changes in needle valve lift, Figure 5 is a vertical cross-sectional view of a conventional fuel injection valve, Figure 6 is an enlarged view of the nozzle tip in Figure 5, and Figure 7
The figure is a view seen from below in Figure 6. 101... Injection valve body, 102... Nozzle chip, 102a... Central injection hole, 102b... Circumferential injection hole, 102d... Seat surface, 102e...
Gap around needle valve tip pin, 104... Needle valve, 104a... Needle valve tip pin.
Claims (1)
及び同ノズルチツプに挿入されたニードル弁を有
する燃料噴射弁において、燃料噴射用噴孔をノズ
ルチツプ先端の中央並びにニードル弁とのシート
面直下の円周方向に配置し、更にニードル弁先端
に先に向つて細くなるテーパ状のピンを突設し、
同ピンをノズルチツプ先端の中央噴孔へ挿入させ
たことを特徴とする燃料噴射弁。 Nozzle tip attached to the tip of the injection valve body,
In a fuel injection valve having a needle valve inserted into the nozzle tip, the fuel injection nozzle hole is arranged in the center of the tip of the nozzle tip and in the circumferential direction directly below the seat surface with the needle valve, and further directed toward the tip of the needle valve first. Protruding tapered pins that become thinner and narrower,
A fuel injection valve characterized in that the pin is inserted into a central nozzle hole at the tip of a nozzle tip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9184988U JPH0214467U (en) | 1988-07-13 | 1988-07-13 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9184988U JPH0214467U (en) | 1988-07-13 | 1988-07-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0214467U true JPH0214467U (en) | 1990-01-30 |
Family
ID=31316306
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9184988U Pending JPH0214467U (en) | 1988-07-13 | 1988-07-13 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0214467U (en) |
-
1988
- 1988-07-13 JP JP9184988U patent/JPH0214467U/ja active Pending