JPS6165250U - - Google Patents
Info
- Publication number
- JPS6165250U JPS6165250U JP14953984U JP14953984U JPS6165250U JP S6165250 U JPS6165250 U JP S6165250U JP 14953984 U JP14953984 U JP 14953984U JP 14953984 U JP14953984 U JP 14953984U JP S6165250 U JPS6165250 U JP S6165250U
- Authority
- JP
- Japan
- Prior art keywords
- piston
- engine speed
- pump
- passage
- hydraulic pressure
- 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 3
- 239000007924 injection Substances 0.000 claims description 3
- 239000000446 fuel Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- High-Pressure Fuel Injection Pump Control (AREA)
Description
第１図は本考案の一実施例に係るデイーゼルエ
ンジンの噴射時期制御装置の断面図、第２図は第
１図の装置のレギユレートバルブ部の拡大断面図
、第３図は従来装置のエンジン回転数とタイマ進
角との関係図、第４図は本考案によるエンジン回
転数とタイマ進角との関係図、である。
１……ロードセンシングタイマ機構、２……ガ
バナシヤフト、３…ガバナスリーブ、６…ポンプ
内、１１……リリーフ通路、１２……フイードポ
ンプ、１３……低圧側、１４……油圧逃がし通路
、１５……レギユレートバルブ、１６……スプリ
ング、１７……ピストン、１７ａ……ピストンの
上部、１７ｂ……ピストンの下部、１８……シリ
ンダ、２２……タイマ、２４……タイマピストン
、２５……タイマピストン高圧室、２６……タイ
マスライドピン、２７……開口、２８，２９……
通路、３０……連通路。
Fig. 1 is a sectional view of an injection timing control device for a diesel engine according to an embodiment of the present invention, Fig. 2 is an enlarged sectional view of the regulation valve section of the device shown in Fig. 1, and Fig. 3 is an enlarged sectional view of a conventional device. FIG. 4 is a diagram showing the relationship between the engine rotation speed and the timer advance angle according to the present invention. DESCRIPTION OF SYMBOLS 1...Load sensing timer mechanism, 2...Governor shaft, 3...Governor sleeve, 6...Inside of pump, 11...Relief passage, 12...Feed pump, 13...Low pressure side, 14...Hydraulic pressure relief passage, 15... Regulate valve, 16... Spring, 17... Piston, 17a... Upper part of piston, 17b... Lower part of piston, 18... Cylinder, 22... Timer, 24... Timer piston, 25... Timer piston. High pressure chamber, 26...Timer slide pin, 27...Opening, 28, 29...
Passageway, 30...Connecting passageway.
Claims (1)
におけるポンプ内圧をフイードポンプの低圧側へ
と逃がす油圧逃がし通路の途中に、エンジン回転
数に応じてフイードポンプからの送油圧を調整す
るレギユレートバルブを設け、前記油圧逃がし通
路のうちポンプ内からの通路をレギユレートバル
ブのピストン摺動面に開口させ、レギユレートバ
ルブのピストンに、エンジン回転数が中回転数域
のときのピストン位置でのみ前記開口とフイード
ポンプの低圧側へのリリーフ通路とを連通する連
通路を設けるとともに、エンジン回転数が所定値
以上の高回転数域および所定値以下の低回転数域
のピストン位置ではピストン外周面が前記開口を
閉塞することにより前記油圧逃がし通路を遮断す
るようにピストンを構成したことを特徴とするデ
イーゼルエンジンの噴射時期制御装置。 In the load sensing timer mechanism of the fuel injection pump, a regulation valve is provided in the middle of the hydraulic pressure relief passage that releases the internal pressure of the pump to the low pressure side of the feed pump to adjust the hydraulic pressure sent from the feed pump according to the engine speed, The passage from inside the pump is opened to the piston sliding surface of the regular valve, and the opening and the feed pump are connected to the piston of the regular valve only at the piston position when the engine speed is in the middle speed range. A communication passage is provided that communicates with the relief passage to the low pressure side, and the outer circumferential surface of the piston closes the opening when the piston is in a high engine speed range above a predetermined value and a low engine speed range below a predetermined value. An injection timing control device for a diesel engine, characterized in that the piston is configured to block the hydraulic pressure relief passage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14953984U JPS6165250U (en) | 1984-10-04 | 1984-10-04 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14953984U JPS6165250U (en) | 1984-10-04 | 1984-10-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6165250U true JPS6165250U (en) | 1986-05-02 |
Family
ID=30707715
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14953984U Pending JPS6165250U (en) | 1984-10-04 | 1984-10-04 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6165250U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020058687A (en) * | 2000-12-30 | 2002-07-12 | 이계안 | Regulating valve for vehicle |
-
1984
- 1984-10-04 JP JP14953984U patent/JPS6165250U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020058687A (en) * | 2000-12-30 | 2002-07-12 | 이계안 | Regulating valve for vehicle |
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