JPS63138468U - - Google Patents
Info
- Publication number
- JPS63138468U JPS63138468U JP3025887U JP3025887U JPS63138468U JP S63138468 U JPS63138468 U JP S63138468U JP 3025887 U JP3025887 U JP 3025887U JP 3025887 U JP3025887 U JP 3025887U JP S63138468 U JPS63138468 U JP S63138468U
- Authority
- JP
- Japan
- Prior art keywords
- piston
- pressurizing chamber
- fuel injection
- cylinder
- control device
- 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 17
- 239000007924 injection Substances 0.000 claims description 17
- 239000000446 fuel Substances 0.000 claims description 10
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Fuel-Injection Apparatus (AREA)
Description
第１図ないし第３図は、本考案の燃料噴射ポン
プの噴射率制御装置の一実施例を表わしており、
第１図は本考案の一実施例の噴射率制御装置の断
面図、第２図はこの噴射率制御装置が取り付けら
れたデイーゼル機関の燃料噴射ポンプ及びその周
辺を表わす概略説明図、第３図はこの噴射率制御
装置の動作を説明するためのタイミングチヤート
、第４図は従来の噴射率制御装置とそれが取り付
けられた燃料噴射ポンプの加圧室部分を表わす断
面図、第５図は圧電素子の一般的な構成図、であ
る。
１……燃料噴射ポンプ、１５……加圧室、２０
……噴射率制御装置、３２……ケーシング、３２
ａ……シリンダ部、３３……圧電素子、３７……
ピストン、４６……ロツド。
1 to 3 show an embodiment of the injection rate control device for a fuel injection pump of the present invention,
Fig. 1 is a sectional view of an injection rate control device according to an embodiment of the present invention, Fig. 2 is a schematic explanatory diagram showing the fuel injection pump of a diesel engine to which this injection rate control device is installed and its surroundings, and Fig. 3 is a timing chart for explaining the operation of this injection rate control device, FIG. 4 is a sectional view showing a conventional injection rate control device and the pressurizing chamber portion of a fuel injection pump to which it is attached, and FIG. 5 is a piezoelectric 1 is a general configuration diagram of an element. 1... Fuel injection pump, 15... Pressurization chamber, 20
... Injection rate control device, 32 ... Casing, 32
a... Cylinder part, 33... Piezoelectric element, 37...
Piston, 46...rod.
Claims (1)
されたシリンダと、 該シリンダ内に嵌挿され、上記加圧室の燃料圧
力により上記加圧室と反対側に押圧移動されるピ
ストンと、 該ピストンに直接もしくは間接的に当接され、
印加電圧に応じて伸縮し、伸長時に上記ピストン
を上記加圧室側に押圧移動させる圧電素子と、 を備え、上記燃料噴射ポンプの燃料主噴射の前
にパイロツト噴射を実行させる噴射率制御装置に
おいて、 上記加圧室内の燃料圧力上昇により移動する上
記ピストンの移動量を制限し、上記圧電素子への
押圧力を抑制するストツパを設けたことを特徴と
する燃料噴射ポンプの噴射率制御装置。[Scope of Claim for Utility Model Registration] A cylinder connected to a pressurizing chamber of a fuel injection pump through a communication hole, and a cylinder that is inserted into the cylinder and is connected to the side opposite to the pressurizing chamber by the fuel pressure in the pressurizing chamber. A piston that is pressed and moved by a piston, and a piston that is in direct or indirect contact with the piston,
A piezoelectric element that expands and contracts according to an applied voltage and presses and moves the piston toward the pressurizing chamber when expanded, and an injection rate control device that executes a pilot injection before the main fuel injection of the fuel injection pump. An injection rate control device for a fuel injection pump, characterized in that a stopper is provided to limit the amount of movement of the piston that moves due to an increase in fuel pressure in the pressurizing chamber, and to suppress the pressing force on the piezoelectric element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3025887U JPS63138468U (en) | 1987-03-02 | 1987-03-02 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3025887U JPS63138468U (en) | 1987-03-02 | 1987-03-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63138468U true JPS63138468U (en) | 1988-09-12 |
Family
ID=30834899
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3025887U Pending JPS63138468U (en) | 1987-03-02 | 1987-03-02 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63138468U (en) |
-
1987
- 1987-03-02 JP JP3025887U patent/JPS63138468U/ja active Pending
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