JPS63140166U - - Google Patents
Info
- Publication number
- JPS63140166U JPS63140166U JP3360287U JP3360287U JPS63140166U JP S63140166 U JPS63140166 U JP S63140166U JP 3360287 U JP3360287 U JP 3360287U JP 3360287 U JP3360287 U JP 3360287U JP S63140166 U JPS63140166 U JP S63140166U
- Authority
- JP
- Japan
- Prior art keywords
- accumulation piston
- push plate
- amount
- cylinder
- movement
- 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.)
- Granted
Links
- 238000002347 injection Methods 0.000 claims description 12
- 239000007924 injection Substances 0.000 claims description 12
- 238000009825 accumulation Methods 0.000 claims description 7
- 239000000446 fuel Substances 0.000 claims description 6
Landscapes
- Fuel-Injection Apparatus (AREA)
Description
第１図は第１実施例のパイロツト噴射装置の構
成を表す断面図、第２図は燃料噴射ポンプの構成
を表す断面図、第３図は第２実施例のパイロツト
噴射装置の構成を表す断面図、第４図は従来のパ
イロツト噴射装置の概略構成を表す断面図、第５
図はパイロツト噴射装置の各部の変化を表すグラ
フである。
１……燃料噴射ポンプ、１７……加圧室、２０
……パイロツト噴射装置、４２……ハウジング、
４３……アキユムレートピストン、４４……シリ
ンダ、４５……ストツパ、４６，６６……スプリ
ング、４７，６７……プレツシヤピン、５４，６
４……背圧室、４９，６８……キヤツプ。
FIG. 1 is a cross-sectional view showing the configuration of the pilot injection device of the first embodiment, FIG. 2 is a cross-sectional view showing the configuration of the fuel injection pump, and FIG. 3 is a cross-sectional view showing the configuration of the pilot injection device of the second embodiment. Figure 4 is a sectional view showing the schematic configuration of a conventional pilot injection device, and Figure 5 is a cross-sectional view showing the schematic configuration of a conventional pilot injection device.
The figure is a graph showing changes in each part of the pilot injection device. 1... Fuel injection pump, 17... Pressurization chamber, 20
...Pilot injection device, 42...Housing,
43... Accumulation rate piston, 44... Cylinder, 45... Stopper, 46, 66... Spring, 47, 67... Pressure pin, 54, 6
4... Back pressure chamber, 49, 68... Cap.
Claims (1)
れるシリンダと、 該シリンダ内に嵌挿され、上記加圧室の燃料圧
力上昇により背圧室側へ押圧移動されるアキユム
レートピストンと、 該アキユムレートピストンの上記背圧室側端部
に当接される押板と、 該押板を介して上記アキユムレートピストンを
上記加圧室側に押圧付勢するスプリングと、 上記アキユムレートピストンの上記加圧室内の
燃料圧力上昇により移動する移動量を制限するス
トツパと、 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パイロツト噴射装
置において、 更に、上記アキユムレートピストンにより移動
される押板の移動量を、上記アキユムレートピス
トンの移動量と略同等に制限する係止部を備えた
こと を特徴とする燃料噴射ポンプのパイロツト噴射
装置。[Scope of Claim for Utility Model Registration] A cylinder that is installed in communication with a pressurizing chamber of a fuel injection pump, and a cylinder that is inserted into the cylinder and is pushed toward the back pressure chamber by an increase in fuel pressure in the pressurizing chamber. an accumulation piston; a push plate that comes into contact with an end of the accumulation piston on the back pressure chamber side; and a push plate that presses and urges the accumulation piston toward the pressurization chamber through the push plate. A pilot injection device, comprising: a spring; and a stopper that limits the amount of movement of the accumulation piston due to an increase in fuel pressure in the pressurizing chamber; The fuel injection pump pilot further comprises a locking portion that limits the amount of movement of the push plate moved by the accumulation piston to approximately the same amount as the amount of movement of the accumulation piston. Injection device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3360287U JPH051650Y2 (en) | 1987-03-06 | 1987-03-06 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3360287U JPH051650Y2 (en) | 1987-03-06 | 1987-03-06 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63140166U true JPS63140166U (en) | 1988-09-14 |
| JPH051650Y2 JPH051650Y2 (en) | 1993-01-18 |
Family
ID=30841362
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3360287U Expired - Lifetime JPH051650Y2 (en) | 1987-03-06 | 1987-03-06 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH051650Y2 (en) |
-
1987
- 1987-03-06 JP JP3360287U patent/JPH051650Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH051650Y2 (en) | 1993-01-18 |