JPS6165269U - - Google Patents
Info
- Publication number
- JPS6165269U JPS6165269U JP14860584U JP14860584U JPS6165269U JP S6165269 U JPS6165269 U JP S6165269U JP 14860584 U JP14860584 U JP 14860584U JP 14860584 U JP14860584 U JP 14860584U JP S6165269 U JPS6165269 U JP S6165269U
- Authority
- JP
- Japan
- Prior art keywords
- plunger
- nozzle
- end surface
- unit injector
- fuel pressure
- 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 6
- 239000007924 injection Substances 0.000 claims description 6
- 239000000446 fuel Substances 0.000 claims description 5
- 238000002485 combustion reaction Methods 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Fuel-Injection Apparatus (AREA)
Description
第１図は本考案ユニツトインジエクタの一実施
例を示す縦断面図、第２図は本考案と従来の噴射
特性線図、第３図は本考案の他の実施例を示すユ
ニツトインジエクタの縦断面図である。
１…ユニツトインジエクタボデイ、２…プラン
ジヤバレル、３…燃料噴射ノズル、４…ノズルボ
デイ、８…噴射孔、９…ノズルニードル、１０…
ノズルばね、１８…可動ばね座、２４…セントラ
ルプランジヤ、２４ｄ…セントラルプランジヤの
上端面、Ｌ１…初期リフト用間隔。
Fig. 1 is a longitudinal sectional view showing one embodiment of the unit injector of the present invention, Fig. 2 is an injection characteristic diagram of the present invention and the conventional one, and Fig. 3 is a unit injector showing another embodiment of the present invention. FIG. DESCRIPTION OF SYMBOLS 1... Unit injector body, 2... Plunger barrel, 3... Fuel injection nozzle, 4... Nozzle body, 8... Injection hole, 9... Nozzle needle, 10...
Nozzle spring, 18... Movable spring seat, 24... Central plunger, 24d... Upper end surface of central plunger, L1 ... Initial lift interval.
Claims (1)
ンジヤバレル内に往復動自在に嵌装された燃料圧
送用プランジヤと、前記プランジヤバレルの下端
側に設けられたノズルボデイ内に該ノズルボデイ
の噴射孔を開閉すると共にノズルばねにより前記
噴射孔を閉塞する方向に付勢されたノズルニード
ルを摺動可能に嵌装してなる燃料噴射ノズルとを
具備してなる内燃機関のユニツトインジエクタに
おいて、前記燃料圧送用プランジヤとノズルニー
ドルとの間にリフト自在にセントラルプランジヤ
を配設してなり、該セントラルプランジヤはその
上端面に前記燃料圧送用プランジヤ圧送行程時の
燃料圧力が作用すると共に、下端面が閉弁位置に
おける前記ノズルニードル上端の可動ばね座の上
端面と、その間に初期リフト用間隔を存して対向
していることを特徴とする内燃機関のユニツトイ
ンジエクタ。 A fuel pressure-feeding plunger is reciprocatably fitted into a plunger barrel provided in a unit injector body, and a nozzle spring is installed in a nozzle body provided at the lower end of the plunger barrel to open and close the injection hole of the nozzle body. A unit injector for an internal combustion engine, comprising: a fuel injection nozzle in which a nozzle needle is slidably fitted with a nozzle needle biased in a direction to close the injection hole; A central plunger is disposed such that it can be lifted freely between the central plunger, and the central plunger has an upper end surface on which the fuel pressure during the pressure feeding stroke of the fuel pressure-feeding plunger acts, and a lower end surface of the nozzle needle in the closed position. A unit injector for an internal combustion engine, characterized in that the upper end surface of a movable spring seat at the upper end faces each other with an initial lift gap between them.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14860584U JPS6165269U (en) | 1984-10-02 | 1984-10-02 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14860584U JPS6165269U (en) | 1984-10-02 | 1984-10-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6165269U true JPS6165269U (en) | 1986-05-02 |
Family
ID=30706811
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14860584U Pending JPS6165269U (en) | 1984-10-02 | 1984-10-02 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6165269U (en) |
-
1984
- 1984-10-02 JP JP14860584U patent/JPS6165269U/ja active Pending