JPS6139446U - Injection timing adjustment device for distributed fuel injection pump - Google Patents
Injection timing adjustment device for distributed fuel injection pumpInfo
- Publication number
- JPS6139446U JPS6139446U JP12463884U JP12463884U JPS6139446U JP S6139446 U JPS6139446 U JP S6139446U JP 12463884 U JP12463884 U JP 12463884U JP 12463884 U JP12463884 U JP 12463884U JP S6139446 U JPS6139446 U JP S6139446U
- Authority
- JP
- Japan
- Prior art keywords
- timer piston
- adjustment device
- injection timing
- timing adjustment
- 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.)
- Pending
Links
Landscapes
- High-Pressure Fuel Injection Pump Control (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
図面は本考案の一実施例を示し、第１図は本考案の噴射
時期調整装置の縦断面図、第２図は第１図中■一■線に
沿う縦断面図、第３図はポンプ室内燃料油圧特性及び進
角特性を示す線区である。
２・・・ポンプ室、３：・・ローラホルダ、７・・・タ
イマピストン、１２・・・送油圧力流入室（圧油室）、
１３・・・タイマスプリング嵌装室（低圧室）、１４・
・・タイマスプリング、１８・・・バルブ本体（サーボ
パルブ）、３１・・・リーク通路。The drawings show one embodiment of the present invention, and Fig. 1 is a longitudinal cross-sectional view of the injection timing adjustment device of the present invention, Fig. 2 is a longitudinal cross-sectional view taken along line 1 and 2 in Fig. 1, and Fig. 3 is a pump. This is a line section showing indoor fuel oil pressure characteristics and advance angle characteristics. 2: Pump chamber, 3: Roller holder, 7: Timer piston, 12: Oil supply pressure inflow chamber (pressure oil chamber),
13... timer spring fitting chamber (low pressure chamber), 14...
...Timer spring, 18...Valve body (servo valve), 31...Leak passage.
Claims (1)
バランスによってタイマピストンに設けタサーボバルブ
の摺動変位によりタイマピストンの一端に形成の圧油室
に供給される送油圧を制御してタイマピストンを変位さ
せ、ローラホルダを回転させて噴射時期を調整し得るサ
ーボバルブ機構を備えた分配型燃料噴射ポンプの噴射時
期調整装置において、前記タイマピストンに、前記サー
ボバルブにより開閉され且つ内燃機関の低速・低負荷運
転時に前記ポンプ室内の燃料油を前記タイマピストンの
他端側に形成の低圧室へリークさせるリーク通路を設け
たことを特徴とする分配型燃料噴射ポンプの噴射時期調
整装置。The timer piston is displaced by controlling the oil pressure supplied to the pressure oil chamber formed at one end of the timer piston by the sliding displacement of the servo valve installed on the timer piston, by balancing the oil pressure from the pump chamber and the spring force of the timer spring. In the injection timing adjustment device for a distribution type fuel injection pump, which is equipped with a servo valve mechanism capable of adjusting the injection timing by rotating a roller holder, the timer piston is provided with a valve that is opened and closed by the servo valve, and which is operated at low speeds and low speeds of the internal combustion engine. An injection timing adjustment device for a distribution type fuel injection pump, characterized in that a leak passage is provided at the other end of the timer piston to cause fuel oil in the pump chamber to leak into a low pressure chamber formed at the other end of the timer piston during load operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12463884U JPS6139446U (en) | 1984-08-17 | 1984-08-17 | Injection timing adjustment device for distributed fuel injection pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12463884U JPS6139446U (en) | 1984-08-17 | 1984-08-17 | Injection timing adjustment device for distributed fuel injection pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6139446U true JPS6139446U (en) | 1986-03-12 |
Family
ID=30683364
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12463884U Pending JPS6139446U (en) | 1984-08-17 | 1984-08-17 | Injection timing adjustment device for distributed fuel injection pump |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6139446U (en) |
-
1984
- 1984-08-17 JP JP12463884U patent/JPS6139446U/en active Pending
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