JPH027360U - - Google Patents
Info
- Publication number
- JPH027360U JPH027360U JP8460088U JP8460088U JPH027360U JP H027360 U JPH027360 U JP H027360U JP 8460088 U JP8460088 U JP 8460088U JP 8460088 U JP8460088 U JP 8460088U JP H027360 U JPH027360 U JP H027360U
- Authority
- JP
- Japan
- Prior art keywords
- hole
- back pressure
- fuel
- pressure chamber
- injection pump
- 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
Landscapes
- Fuel-Injection Apparatus (AREA)
Description
第１図に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、第４図は本考案のその他の実施例のパイロツ
ト噴射装置の主要部断面図である。
１…燃料噴射ポンプ、１０…加圧室、２０…パ
イロツト噴射装置、４２…背圧室、４５…シリン
ダ、４６…アキユームレートピストン、４７…小
孔、５２…ストツパ、５５…ストツパピン、５６
ａ，５６ｂ…リターン通路、５７…貫通孔、５８
…スクリユ。
FIG. 1 is a cross-sectional view of a pilot injection device according to an embodiment of the present invention, FIG. 2 is a schematic diagram of a fuel injection pump equipped with the same pilot injection device, and FIG.
4 are sectional views of main parts of a pilot injection device according to another embodiment of the present invention. DESCRIPTION OF SYMBOLS 1...Fuel injection pump, 10...Pressure chamber, 20...Pilot injection device, 42...Back pressure chamber, 45...Cylinder, 46...Accumulation rate piston, 47...Small hole, 52...Stopper, 55...Stopper pin, 56
a, 56b...Return passage, 57...Through hole, 58
...Skuriyu.
Claims (1)
の燃料圧力上昇に伴つて押圧移動されるアキユー
ムレートピストンを外嵌するシリンダと、 該シリンダに連設されて内部に燃料を充填し、
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、 上記背圧室の外部に連通する少なくとも１つの
貫通孔と、 該貫通孔に配設され、上記背圧室外部から伝達
される作用力に応じて上記貫通孔を開放・閉塞す
る開閉部材と、 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 communicating with a pressurizing chamber of a fuel injection pump and enclosing an accumulation rate piston that is pressed and moved as the fuel pressure in the pressurizing chamber increases, and a cylinder connected to the cylinder. filled with fuel inside,
A pilot injection device for a fuel injection pump, comprising: a back pressure chamber for controlling movement of the accumulation piston; at least one through hole communicating with the outside of the back pressure chamber; and at least one through hole disposed in the through hole. A pilot injection device for a fuel injection pump, comprising: an opening/closing member that opens and closes the through hole according to an acting force transmitted from outside the back pressure chamber.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8460088U JPH0640922Y2 (en) | 1988-06-27 | 1988-06-27 | Pilot injection device for fuel injection pump |
| US07/371,225 US5033443A (en) | 1988-06-27 | 1989-06-26 | Pilot injection device for fuel injection pump |
| EP19890111610 EP0348865A3 (en) | 1988-06-27 | 1989-06-26 | Pilot injection device for fuel injection pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8460088U JPH0640922Y2 (en) | 1988-06-27 | 1988-06-27 | Pilot injection device for fuel injection pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH027360U true JPH027360U (en) | 1990-01-18 |
| JPH0640922Y2 JPH0640922Y2 (en) | 1994-10-26 |
Family
ID=31309280
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8460088U Expired - Lifetime JPH0640922Y2 (en) | 1988-06-27 | 1988-06-27 | Pilot injection device for fuel injection pump |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0640922Y2 (en) |
-
1988
- 1988-06-27 JP JP8460088U patent/JPH0640922Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0640922Y2 (en) | 1994-10-26 |