JPS61152767U - - Google Patents
Info
- Publication number
- JPS61152767U JPS61152767U JP3668985U JP3668985U JPS61152767U JP S61152767 U JPS61152767 U JP S61152767U JP 3668985 U JP3668985 U JP 3668985U JP 3668985 U JP3668985 U JP 3668985U JP S61152767 U JPS61152767 U JP S61152767U
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- high pressure
- fuel
- pressure chamber
- plunger
- 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
- 239000000446 fuel Substances 0.000 claims description 6
- 238000002347 injection Methods 0.000 claims 2
- 239000007924 injection Substances 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Fuel-Injection Apparatus (AREA)
Description
第１図はこの考案の一実施例の要部断面図、第
２図はその作用を従来例との比較において示した
圧力特性線図である。第３図は従来例の断面図で
ある。
４…ポンプ本体、１０…ポンプ軸、１２…ポン
ププランジヤ、１３…高圧室、１４…フエイスカ
ム、１６…ローラ、１８…ポンプ室、４２…プラ
ンジヤバレル、４３…圧力制御弁、４６…弁室、
４７…弁体、４８…皿ばね、５５…燃料逃し通路
。
FIG. 1 is a sectional view of a main part of an embodiment of this invention, and FIG. 2 is a pressure characteristic diagram showing its operation in comparison with a conventional example. FIG. 3 is a sectional view of a conventional example. 4...Pump body, 10...Pump shaft, 12...Pump plunger, 13...High pressure chamber, 14...Face cam, 16...Roller, 18...Pump chamber, 42...Plunger barrel, 43...Pressure control valve, 46...Valve chamber,
47... Valve body, 48... Belleville spring, 55... Fuel relief passage.
Claims (1)
ンププランジヤを、機関駆動のカムを介して往復
運動させるように構成した燃料噴射ポンプにおい
て、燃料系統の低圧部分と前記高圧室とを連通す
る燃料逃し通路と、弾性体の張力に基づき高圧室
圧力に対抗して前記燃料逃し通路を閉止する圧力
制御弁とを設け、かつ前記圧力制御弁は前記プラ
ンジヤ駆動カムの許容面圧に対応する高圧室圧力
以上の圧力領域で開くようにその開弁圧力を設定
したことを特徴とする燃料噴射ポンプ。 In a fuel injection pump configured to reciprocate a pump plunger defining a high pressure chamber between the plunger barrel and the pump via an engine-driven cam, a fuel relief valve communicates a low pressure portion of the fuel system with the high pressure chamber. and a pressure control valve that closes the fuel relief passage against the high pressure chamber pressure based on the tension of an elastic body, and the pressure control valve controls the high pressure chamber pressure corresponding to the allowable surface pressure of the plunger drive cam. A fuel injection pump characterized in that its opening pressure is set so that it opens in the above pressure range.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3668985U JPS61152767U (en) | 1985-03-14 | 1985-03-14 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3668985U JPS61152767U (en) | 1985-03-14 | 1985-03-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61152767U true JPS61152767U (en) | 1986-09-20 |
Family
ID=30542106
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3668985U Pending JPS61152767U (en) | 1985-03-14 | 1985-03-14 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61152767U (en) |
-
1985
- 1985-03-14 JP JP3668985U patent/JPS61152767U/ja active Pending
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