JPS5917267U - distribution type fuel injection pump - Google Patents
distribution type fuel injection pumpInfo
- Publication number
- JPS5917267U JPS5917267U JP11278282U JP11278282U JPS5917267U JP S5917267 U JPS5917267 U JP S5917267U JP 11278282 U JP11278282 U JP 11278282U JP 11278282 U JP11278282 U JP 11278282U JP S5917267 U JPS5917267 U JP S5917267U
- Authority
- JP
- Japan
- Prior art keywords
- port
- plunger
- communicates
- control sleeve
- injection 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
- Fuel-Injection Apparatus (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) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は２段噴射機能を有する従来の分配型燃料噴射ポ
ンプの要部の断面図、第２図は同上Ａ−Ａ矢視断面図、
第３図は第２図の展開図、第４図は本考案に係る一実施
例を示す分配型燃料噴射ポンプの要部断面図、第５図は
同上のＢ−Ｂ矢視断面図、第６図は第５図のコントロー
ルスリーブの展開図であって、Ａは軽負荷時、Ｂは高負
荷時の作動状態を説明している、第７図は同上実施例の
噴射量特性を示すグラフであって、Ａは軽負荷時、Ｂは
高負荷時を示す、第８図Ａは本考案の他の実施例を示す
要部縦断面図、第８図Ｂは同上のコントロールスリーブ
部分の側面図、第９図Ａは本考案の第３の実施例を示す
要部縦断面図、第９図Ｂは同上のコントロールスリーブ
部分の側面図、第１０図は同上実施例のコン１〜ロール
スリニブ角度調整手段を示す構成図である。
１・・・プランジャバレル、３・・・吸入ポート、４・
・・吐出ポート、５・・・プランジャ、６・・・圧力室
、８・・・主燃料通路、９．・・・カットオフポート、
１０・・・子分配ポート、１１・・・分配ポート、１３
・・・コントロールスリーブ、２１・・・予噴射燃料通
路、２２・・・接続ポート、２３・・・連通路、２３ａ
・・・環状溝部、２３ｂ、２３Ｃ・・・スリットＬ３１
−・・ロッド、３３・・・リニアンレノイド、４１・・
・目標値設定演算回路、４２・・・変位センサ、４４・
・・サーボアンプ、４５・・・ソレノイド駆動回路。
ｇ １３
２３９
ノFig. 1 is a sectional view of the main parts of a conventional distribution type fuel injection pump having a two-stage injection function, and Fig. 2 is a sectional view taken along arrow A-A of the same.
FIG. 3 is a developed view of FIG. 2, FIG. 4 is a sectional view of essential parts of a distribution type fuel injection pump showing an embodiment of the present invention, FIG. Fig. 6 is a developed view of the control sleeve shown in Fig. 5, where A shows the operating state at light load and B shows the operating state at high load. Fig. 7 is a graph showing the injection quantity characteristics of the same example. 8A is a vertical sectional view of a main part showing another embodiment of the present invention, and FIG. 8B is a side view of the same control sleeve portion. Figure 9A is a vertical sectional view of the main part showing the third embodiment of the present invention, Figure 9B is a side view of the control sleeve portion of the same, and Figure 10 is the control sleeve angle of the control sleeve of the same embodiment. It is a block diagram which shows an adjustment means. 1... Plunger barrel, 3... Suction port, 4...
...Discharge port, 5... Plunger, 6... Pressure chamber, 8... Main fuel passage, 9. ...Cutoff port,
10... Child distribution port, 11... Distribution port, 13
... Control sleeve, 21... Pre-injection fuel passage, 22... Connection port, 23... Communication passage, 23a
...Annular groove, 23b, 23C...Slit L31
-...Rod, 33...Linian Lenoid, 41...
・Target value setting calculation circuit, 42...Displacement sensor, 44・
... Servo amplifier, 45... Solenoid drive circuit. g 13 239 no
Claims (1)
ランジャバレルと、゛該プランジャバレル内で回転並び
に往復動して燃料を圧力室内に吸入しここから圧送する
プランジャと、前記圧力室に連通してプランジャに形成
された主燃料通路をプランジャ側面で低圧側に開放する
カットオフポートを開閉するためあプランジャ外周に摺
動自由に装着されたコントロールスリーブと、を備え、
前記プランジャは、前記主燃料通路に連通ずると共にプ
ランジャ回転位置に応じて前記吐出ポートに連通ずる分
配ポートを有する分配型燃料噴射ポンプにおいて、前記
プランジャに、分配ポートとはプランジャ回転方向進み
側に位置して開口する子分配ポートと前記カットオフポ
ートに隣接してコントロールスリーブ内周面に向は開口
する接続ポー［・とを連通する予噴射燃料通路を形成し
、前記コントロールスリーブの内周壁に、コントロール
スリーブが機関高負荷位置に制御されるに従ってカット
オフポートと接続ポートとが連通ずるブランジク回転角
度範囲が小さくなるようにカットオフポートと接続ポー
トとを連通ずる連通路を形成したことを特徴とする分配
型燃料噴射ポンプ。a plunger barrel having a fuel suction port and a discharge port for each cylinder; a plunger that rotates and reciprocates within the plunger barrel to suck fuel into a pressure chamber and pressure-deliver it from there; and a plunger that communicates with the pressure chamber. A control sleeve is slidably attached to the outer circumference of the plunger to open and close a cut-off port that opens the main fuel passage formed in the plunger to the low pressure side on the side of the plunger.
In the distribution type fuel injection pump, the plunger has a distribution port that communicates with the main fuel passage and communicates with the discharge port depending on the rotational position of the plunger. A pre-injection fuel passage is formed in communication with a sub-distribution port that opens at the cut-off port and a connection port that opens toward the inner circumferential surface of the control sleeve adjacent to the cut-off port; The communication passage that communicates between the cutoff port and the connection port is formed so that as the control sleeve is controlled to a high engine load position, the blank rotation angle range in which the cutoff port and the connection port communicate with each other becomes smaller. Distribution type fuel injection pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11278282U JPS5917267U (en) | 1982-07-27 | 1982-07-27 | distribution type fuel injection pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11278282U JPS5917267U (en) | 1982-07-27 | 1982-07-27 | distribution type fuel injection pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5917267U true JPS5917267U (en) | 1984-02-02 |
Family
ID=30261325
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11278282U Pending JPS5917267U (en) | 1982-07-27 | 1982-07-27 | distribution type fuel injection pump |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5917267U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06185509A (en) * | 1992-04-15 | 1994-07-05 | Nippon Plast Co Ltd | Connecting structure between two parts |
-
1982
- 1982-07-27 JP JP11278282U patent/JPS5917267U/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06185509A (en) * | 1992-04-15 | 1994-07-05 | Nippon Plast Co Ltd | Connecting structure between two parts |
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