JPS6186565U - - Google Patents
Info
- Publication number
- JPS6186565U JPS6186565U JP17165984U JP17165984U JPS6186565U JP S6186565 U JPS6186565 U JP S6186565U JP 17165984 U JP17165984 U JP 17165984U JP 17165984 U JP17165984 U JP 17165984U JP S6186565 U JPS6186565 U JP S6186565U
- Authority
- JP
- Japan
- Prior art keywords
- needle
- nozzle
- fitting hole
- nozzle needle
- lifted
- 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 4
- 239000007924 injection Substances 0.000 claims description 4
- 239000000446 fuel Substances 0.000 claims description 3
- 239000000295 fuel oil Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Fuel-Injection Apparatus (AREA)
Description
図面は本考案の一実施例を示し、第１図は燃料
噴射弁の縦断面図、第２図は第１図の円部分の
拡大図、第３図は本考案と従来の噴射特性線図で
ある。
１…ノズルホルダボデイー、３…ノズルボデー
、３ａ…噴孔、５…ノズルニードル、６…ニード
ルジヤーナル部、６ａ…大径部、６ｂ…小径部、
７…嵌合孔、９…プレツシヤピン、１４…プレツ
シヤスプリング。
The drawings show one embodiment of the present invention; Fig. 1 is a longitudinal cross-sectional view of a fuel injection valve, Fig. 2 is an enlarged view of the circular part of Fig. 1, and Fig. 3 is an injection characteristic diagram of the present invention and the conventional one. It is. DESCRIPTION OF SYMBOLS 1... Nozzle holder body, 3... Nozzle body, 3a... Nozzle hole, 5... Nozzle needle, 6... Needle journal part, 6a... Large diameter part, 6b... Small diameter part,
7... Fitting hole, 9... Pressure pin, 14... Pressure spring.
Claims (1)
ドルジヤーナル部の上端部を、ノズルホルダボデ
ーの下端部に穿設された嵌合孔内を摺動自在に介
してプレツシヤピンの下端部に係合させることに
より、該プレツシヤピンを介して前記ノズルニー
ドルをプレツシヤスプリングにより噴孔を閉塞す
る方向に付勢すると共に、前記ノズルニードルと
ノズルボデーとの間の隙間を潤滑した燃料油が前
記ニードルジヤナール部と嵌合孔との間の隙間を
介して低圧側へリークし得るようにした燃料噴射
弁において、前記ニードルジヤーナル部は軸方向
所定位置より上端側を下端側より小径となし、前
記ノズルニードルがリフト開始位置から所定位置
までリフトする間は前記ニードルジヤーナル部の
小径部のみが嵌合孔内に位置し且つ前記ノズルニ
ードルが所定位置から最大位置までリフトする間
は前記ニードルジヤーナル部の大径部が前記嵌合
孔内に位置し得るように構成したことを特徴とす
る燃料噴射弁。 The upper end of a needle journal protruding from the center of the upper end surface of the nozzle needle is slidably engaged with the lower end of the pressure pin through a fitting hole bored in the lower end of the nozzle holder body. As a result, the nozzle needle is urged by the pressure spring in the direction of closing the nozzle hole through the pressure pin, and the fuel oil that has lubricated the gap between the nozzle needle and the nozzle body is connected to the needle journal part. In the fuel injection valve that is capable of leaking to the low pressure side through a gap between the nozzle needle and the fitting hole, the needle journal portion has a smaller diameter on the upper end side than on the lower end side from a predetermined axial position, and the nozzle needle is lifted. While the nozzle needle is lifted from the starting position to the predetermined position, only the small diameter portion of the needle journal portion is located in the fitting hole, and while the nozzle needle is lifted from the predetermined position to the maximum position, the large diameter portion of the needle journal portion is located within the fitting hole. A fuel injection valve characterized in that it is configured to be positioned within the fitting hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17165984U JPS6186565U (en) | 1984-11-14 | 1984-11-14 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17165984U JPS6186565U (en) | 1984-11-14 | 1984-11-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6186565U true JPS6186565U (en) | 1986-06-06 |
Family
ID=30729338
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17165984U Pending JPS6186565U (en) | 1984-11-14 | 1984-11-14 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6186565U (en) |
-
1984
- 1984-11-14 JP JP17165984U patent/JPS6186565U/ja active Pending
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