JPS59116539U - Fuel injection timing adjustment device - Google Patents
Fuel injection timing adjustment deviceInfo
- Publication number
- JPS59116539U JPS59116539U JP907383U JP907383U JPS59116539U JP S59116539 U JPS59116539 U JP S59116539U JP 907383 U JP907383 U JP 907383U JP 907383 U JP907383 U JP 907383U JP S59116539 U JPS59116539 U JP S59116539U
- Authority
- JP
- Japan
- Prior art keywords
- pressure chamber
- piston
- fuel injection
- injection timing
- adjustment device
- 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
第１図は従来の燃料噴射時期調整装置を備えた燃料噴射
装置を図式的に示す断面図、第２図は本考案に係る燃料
噴射時期調整装置の断面図、第３図は同装置の作動特性
を示す線図である。
８：噴射時期調整装置、１７：プランジャ、２４：コン
トロールスリーブ、２７：カム円板、３０ニブランジヤ
バレル、３７：フィードポンプ、４４：ばね、４８：シ
ール部材、４９：高圧室、５２ニブランジヤ、５６：高
圧室、５７：タイマピストン、′５８：フィードバック
ばね、５９：低温始動用ピストン、６９：低圧室、７０
：サーボ弁、７１：室。Fig. 1 is a sectional view schematically showing a fuel injection device equipped with a conventional fuel injection timing adjustment device, Fig. 2 is a sectional view of a fuel injection timing adjustment device according to the present invention, and Fig. 3 is an operation of the same device. It is a line diagram showing characteristics. 8: injection timing adjustment device, 17: plunger, 24: control sleeve, 27: cam disc, 30 nib plunger barrel, 37: feed pump, 44: spring, 48: seal member, 49: high pressure chamber, 52 nib plunger, 56: High pressure chamber, 57: Timer piston, '58: Feedback spring, 59: Piston for cold start, 69: Low pressure chamber, 70
: Servo valve, 71: Chamber.
Claims (1)
の燃料が順次機関の各シリンダへ圧送されるようになっ
ており、前記プランジャに往復運動を与えるカム円板が
油圧アクチュエータに連結されており、このカム円板の
回転変位によって噴射時期が調整されるようになってい
る分配型燃料噴射装置の燃料噴射時期調整装置において
、前記油圧アクチュエータは前記カム円板と連結される
ピストンによってシリンダの内部にフィードポンプの吐
出口側に連なる高圧室と吸込口側に連なる低圧室とが仕
切られており、前記ピストンの内部に高圧室の圧力にほ
ぼ比倒して前記弁体を変位させるサーボ弁を備えており
、前記シリンダの低圧室側に始動用ピストンを嵌装して
基端側にフィードポンプの吐出口側に連なる高圧室を区
画し、前記低圧室に収容したばねによって通常前記始動
用ピストンが燃料吐出圧力導入口を閉鎖するように付勢
するとともに、該ピストンと前記サーボ弁との間にフィ
ードバックばねを介装し、これによって低温始動時の前
記フィードバックばねのセット荷重を増大させるように
したことを特徴とする燃料噴射時期調整装置。Fuel in the plunger chamber is sequentially pumped to each cylinder of the engine by the rotational and reciprocating motion of the plunger, and a cam disc that provides reciprocating motion to the plunger is connected to a hydraulic actuator. In a fuel injection timing adjustment device for a distribution type fuel injection device in which the injection timing is adjusted by rotational displacement of a plate, the hydraulic actuator has a feed pump installed inside the cylinder by a piston connected to the cam disk. A high pressure chamber connected to the discharge port side and a low pressure chamber connected to the suction port side are partitioned, and a servo valve is provided inside the piston to displace the valve body almost in comparison to the pressure in the high pressure chamber, A starting piston is fitted into the low-pressure chamber side of the cylinder, and a high-pressure chamber connected to the discharge port side of the feed pump is defined on the base end side, and a spring housed in the low-pressure chamber normally causes the starting piston to introduce fuel discharge pressure. A feedback spring is interposed between the piston and the servo valve, thereby increasing the set load of the feedback spring during cold start. Fuel injection timing adjustment device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP907383U JPS59116539U (en) | 1983-01-27 | 1983-01-27 | Fuel injection timing adjustment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP907383U JPS59116539U (en) | 1983-01-27 | 1983-01-27 | Fuel injection timing adjustment device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59116539U true JPS59116539U (en) | 1984-08-06 |
Family
ID=30140546
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP907383U Pending JPS59116539U (en) | 1983-01-27 | 1983-01-27 | Fuel injection timing adjustment device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59116539U (en) |
-
1983
- 1983-01-27 JP JP907383U patent/JPS59116539U/en active Pending
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