JPH0213165U - - Google Patents
Info
- Publication number
- JPH0213165U JPH0213165U JP8833288U JP8833288U JPH0213165U JP H0213165 U JPH0213165 U JP H0213165U JP 8833288 U JP8833288 U JP 8833288U JP 8833288 U JP8833288 U JP 8833288U JP H0213165 U JPH0213165 U JP H0213165U
- Authority
- JP
- Japan
- Prior art keywords
- accumulation rate
- rate piston
- piston
- cylinder
- rear end
- 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 11
- 239000007924 injection Substances 0.000 claims description 11
- 238000009825 accumulation Methods 0.000 claims description 7
- 239000000446 fuel Substances 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Fuel-Injection Apparatus (AREA)
Description
第１図は本考案一実施例のパイロツト噴射装置
の断面図、第２図は同じくそのパイロツト噴射装
置を備えた燃料噴射ポンプの概略構成図、第３図
は同じくその燃料噴射期間とエンジン出力との関
係を示すグラフ、第４図は本考案のその他の実施
例の断面図である。
１…燃料噴射ポンプ、１０…加圧室、２０…パ
イロツト噴射装置、４３…アキユームレートピス
トン、４４…シリンダ、４５…ストツパ、４９…
背圧室、５５…シール部材。
Fig. 1 is a sectional view of a pilot injection device according to an embodiment of the present invention, Fig. 2 is a schematic configuration diagram of a fuel injection pump equipped with the same pilot injection device, and Fig. 3 is a diagram showing the fuel injection period and engine output. FIG. 4 is a cross-sectional view of another embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Fuel injection pump, 10... Pressurization chamber, 20... Pilot injection device, 43... Accumulation rate piston, 44... Cylinder, 45... Stopper, 49...
Back pressure chamber, 55...Sealing member.
Claims (1)
、 該シリンダ内に嵌挿され、後端部に突設された
小径部を有し、上記加圧室内の燃料圧力上昇に伴
つて押圧移動されるアキユームレートピストンと
、 該アキユームレートピストンの小径部が遊貫す
る貫通孔を有し、上記加圧室内の燃料圧力上昇に
伴う上記アキユームレートピストンの移動量を上
記アキユームレートピストン後端部との当接によ
り制限する制限部材と、 該制限部材に対して上記シリンダと反対側に配
設され、該シリンダに上記貫通孔を介して連通し
、上記アキユームレートピストンの移動を制御す
る背圧室と、 を具備した燃料噴射ポンプのパイロツト噴射装
置であつて、 上記アキユームレートピストン後端部と上記制
限部材との当接部に、該アキユームレートピスト
ン後端部と該制限部材との当接時に、上記シリン
ダと上記背圧室との上記貫通孔を介した連通を封
止する封止部材を配設し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。[Claims for Utility Model Registration] A cylinder that communicates with a pressurizing chamber of a fuel injection pump, and a small-diameter portion that is fitted into the cylinder and protrudes from the rear end, and that controls the fuel pressure in the pressurizing chamber. an accumulation rate piston that is pressed and moved as it ascends; and a through hole through which a small diameter portion of the accumulation rate piston passes loosely; a limiting member that limits the accumulation rate piston by contacting with the rear end of the accumulation rate piston; A pilot injection device for a fuel injection pump, comprising: a back pressure chamber for controlling movement of an accumulation rate piston; and a back pressure chamber for controlling movement of an accumulation rate piston. A fuel injection pump characterized in that a sealing member is provided for sealing communication between the cylinder and the back pressure chamber through the through hole when the rear end of the piston comes into contact with the restriction member. Pilot injection device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8833288U JPH0213165U (en) | 1988-07-01 | 1988-07-01 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8833288U JPH0213165U (en) | 1988-07-01 | 1988-07-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0213165U true JPH0213165U (en) | 1990-01-26 |
Family
ID=31312900
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8833288U Pending JPH0213165U (en) | 1988-07-01 | 1988-07-01 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0213165U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS487124U (en) * | 1971-06-05 | 1973-01-26 | ||
| JPS6041290U (en) * | 1983-08-26 | 1985-03-23 | 株式会社 寿 | writing implements |
-
1988
- 1988-07-01 JP JP8833288U patent/JPH0213165U/ja active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS487124U (en) * | 1971-06-05 | 1973-01-26 | ||
| JPS5010832Y2 (en) * | 1971-06-05 | 1975-04-04 | ||
| JPS6041290U (en) * | 1983-08-26 | 1985-03-23 | 株式会社 寿 | writing implements |