JPS643036U - - Google Patents
Info
- Publication number
- JPS643036U JPS643036U JP9725887U JP9725887U JPS643036U JP S643036 U JPS643036 U JP S643036U JP 9725887 U JP9725887 U JP 9725887U JP 9725887 U JP9725887 U JP 9725887U JP S643036 U JPS643036 U JP S643036U
- Authority
- JP
- Japan
- Prior art keywords
- pump
- engine
- plunger
- pressure
- detecting
- 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 8
- 239000007924 injection Substances 0.000 claims description 8
- 239000000446 fuel Substances 0.000 claims description 7
- 230000006835 compression Effects 0.000 claims 1
- 238000007906 compression Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Description
第１図は本考案のクレーム対応図、第２図は本
考案の実施例を示すブロツク回路図、第３図は制
御動作のフローチヤート、第４図は燃料噴射特性
を示す説明図である。第５図は従来例のポンプ断
面図、第６図Ａ，Ｂはそれぞれ通常噴射とパイロ
ツト噴射時の燃料噴射特性を示す説明図、第７図
はフエイスカムのカム速度特性図である。
１…ポンプハウジング、２…プランジヤポンプ
、５…ポンプ室、７…プランジヤ、９…フエイス
カム、１１…ローラ、１２…プランジヤ室、１３
…燃料戻し通路、１４…電磁弁、２０…制御回路
、２１…アクセル開度センサ、２２…エンジン回
転数センサ、２２…水温センサ。
FIG. 1 is a diagram corresponding to claims of the present invention, FIG. 2 is a block circuit diagram showing an embodiment of the present invention, FIG. 3 is a flowchart of control operation, and FIG. 4 is an explanatory diagram showing fuel injection characteristics. FIG. 5 is a sectional view of a conventional pump, FIGS. 6A and 6B are explanatory diagrams showing fuel injection characteristics during normal injection and pilot injection, respectively, and FIG. 7 is a cam speed characteristic diagram of a face cam. DESCRIPTION OF SYMBOLS 1... Pump housing, 2... Plunger pump, 5... Pump chamber, 7... Plunger, 9... Face cam, 11... Roller, 12... Plunger chamber, 13
...Fuel return passage, 14...Solenoid valve, 20...Control circuit, 21...Accelerator opening sensor, 22...Engine speed sensor, 22...Water temperature sensor.
Claims (1)
ドポンプと高圧プランジヤポンプを設け、ポンプ
ハウジングに形成したフイードポンプの低圧ポン
プ室とプランジヤポンプの高圧プランジヤ室とを
連通する燃料戻し通路に電磁弁を介装し、この電
磁弁の開閉により燃料の噴射開始時期と噴射終了
時期を制御するようにしたデイーゼルエンジンの
燃料噴射ポンプにおいて、エンジンの冷間状態を
検出する手段と、アイドル状態を検出する手段と
、エンジンの冷間アイドル状態でのプランジヤ圧
縮行程において電磁弁を連続的に断続開閉させる
制御手段とを設けたことを特徴とするデイーゼル
エンジンの燃料噴射ポンプ制御装置。 A low-pressure feed pump and a high-pressure plunger pump are provided that rotate in synchronization with the rotation of the engine, and a solenoid valve is interposed in a fuel return passage that communicates the low-pressure pump chamber of the feed pump and the high-pressure plunger chamber of the plunger pump formed in the pump housing. A fuel injection pump for a diesel engine that controls fuel injection start timing and injection end timing by opening and closing this electromagnetic valve includes means for detecting a cold state of the engine, means for detecting an idling state of the engine, and a means for detecting an idling state of the engine. 1. A fuel injection pump control device for a diesel engine, comprising control means for continuously opening and closing a solenoid valve in a plunger compression stroke in a cold idle state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9725887U JPS643036U (en) | 1987-06-24 | 1987-06-24 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9725887U JPS643036U (en) | 1987-06-24 | 1987-06-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS643036U true JPS643036U (en) | 1989-01-10 |
Family
ID=31322564
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9725887U Pending JPS643036U (en) | 1987-06-24 | 1987-06-24 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS643036U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07167357A (en) * | 1993-12-13 | 1995-07-04 | Kawanishi Suido Kiki:Kk | Tube joint and rubber packing |
-
1987
- 1987-06-24 JP JP9725887U patent/JPS643036U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07167357A (en) * | 1993-12-13 | 1995-07-04 | Kawanishi Suido Kiki:Kk | Tube joint and rubber packing |
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