JPS62169258U - - Google Patents
Info
- Publication number
- JPS62169258U JPS62169258U JP5919386U JP5919386U JPS62169258U JP S62169258 U JPS62169258 U JP S62169258U JP 5919386 U JP5919386 U JP 5919386U JP 5919386 U JP5919386 U JP 5919386U JP S62169258 U JPS62169258 U JP S62169258U
- Authority
- JP
- Japan
- Prior art keywords
- nozzle
- tip
- valve body
- valve
- fuel injection
- 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 8
- 238000002347 injection Methods 0.000 claims description 5
- 239000007924 injection Substances 0.000 claims description 5
Landscapes
- Fuel-Injection Apparatus (AREA)
Description
第１図はこの考案の一実施例の構成を示す縦断
面図、第２図は第１図の―線に添う断面図、
第３図は弁体のリフト料に対する燃料通過面積の
関係を示すグラフ、第４図及び第５図はカム軸の
回転角に対する燃料噴射量の関係を示すグラフで
あり、第４図は機関の低回転時の場合、第５図は
機関の中高速回転時の場合をそれぞれ示すもので
ある。
１……ノズルボデイ、２……ニードル弁（弁体
）、５……摺動部（弁先端部）、６……第一噴孔
、７……第二噴孔。
Fig. 1 is a longitudinal sectional view showing the configuration of an embodiment of this invention, Fig. 2 is a sectional view taken along the line - in Fig. 1,
Fig. 3 is a graph showing the relationship between the fuel passage area and the lift charge of the valve body, and Figs. 4 and 5 are graphs showing the relationship between the fuel injection amount and the rotation angle of the camshaft. FIG. 5 shows the case when the engine rotates at low speeds and the case when the engine rotates at medium and high speeds. 1... Nozzle body, 2... Needle valve (valve body), 5... Sliding part (valve tip), 6... First nozzle hole, 7... Second nozzle hole.
Claims (1)
に弁体を所定の付勢力に抗してリフトさせること
により、該ノズルボデイの先端に形成された前記
弁体とノズルボデイとの間の油密性を解除し、該
ノズルボデイの先端に形成された噴孔から該燃料
を噴射させる燃料噴射ノズルにおいて、前記弁体
とノズルボデイとの間の油密性を形成する部位を
除く部位であつて、前記弁体のリフト方向に添う
前記ノズルボデイの先端部位に第一噴孔及び第二
噴孔を所定間隔を置いてそれぞれ形成し、前記弁
体のリフト開始から所定のリフト位置までの間で
は前記第一噴孔を介しての燃料噴射を可能にし、
前記所定のリフト位置に後続する前記弁体のリフ
ト位置では前記第二噴孔の閉鎖状態を解除すると
共に、前記第一及び第二噴孔の双方を介しての燃
料噴射を可能にする弁先端部を該弁体に形成した
ことを特徴とする燃料噴射ノズルの先端部構造。 The valve element is disposed in the nozzle body and is lifted against a predetermined urging force when fuel is fed under pressure, thereby improving oil tightness between the valve element formed at the tip of the nozzle body and the nozzle body. In a fuel injection nozzle that releases the valve body and injects the fuel from a nozzle hole formed at the tip of the nozzle body, a portion other than a portion that forms oil-tightness between the valve body and the nozzle body; A first nozzle hole and a second nozzle hole are formed at a predetermined interval at the tip of the nozzle body along the lift direction of the valve body, and the first nozzle hole is formed between the start of lift of the valve body and a predetermined lift position. Allows fuel injection through the hole,
At a lift position of the valve body subsequent to the predetermined lift position, the valve tip releases the closed state of the second nozzle hole and enables fuel injection through both the first and second nozzle holes. 1. A tip structure of a fuel injection nozzle, characterized in that a portion is formed on the valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5919386U JPS62169258U (en) | 1986-04-18 | 1986-04-18 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5919386U JPS62169258U (en) | 1986-04-18 | 1986-04-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62169258U true JPS62169258U (en) | 1987-10-27 |
Family
ID=30890457
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5919386U Pending JPS62169258U (en) | 1986-04-18 | 1986-04-18 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62169258U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015034486A (en) * | 2013-08-08 | 2015-02-19 | 株式会社日本自動車部品総合研究所 | Fuel injection nozzle |
-
1986
- 1986-04-18 JP JP5919386U patent/JPS62169258U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015034486A (en) * | 2013-08-08 | 2015-02-19 | 株式会社日本自動車部品総合研究所 | Fuel injection nozzle |
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