JPH0188064U - - Google Patents
Info
- Publication number
- JPH0188064U JPH0188064U JP18468987U JP18468987U JPH0188064U JP H0188064 U JPH0188064 U JP H0188064U JP 18468987 U JP18468987 U JP 18468987U JP 18468987 U JP18468987 U JP 18468987U JP H0188064 U JPH0188064 U JP H0188064U
- Authority
- JP
- Japan
- Prior art keywords
- control sleeve
- port
- plunger
- cut
- fuel
- 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
- 239000000446 fuel Substances 0.000 claims description 8
- 238000002347 injection Methods 0.000 claims description 8
- 239000007924 injection Substances 0.000 claims description 8
- 238000010586 diagram Methods 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 1
Landscapes
- Fuel-Injection Apparatus (AREA)
Description
第１図はこの考案のクレーム対応図、第２図は
この考案の一実施例の噴射ポンプの要部断面図、
第３図は第２図のＡ−Ａ線断面図、第４図はこの
実施例のコントロールスリーブ部分の拡大図であ
る。第５図Ａは４気筒エンジンに適用した一例の
コントロールスリーブの正面図、同図Ｂは同じく
コントロールスリーブの側面図、第６図はコント
ロールスリーブの内周面に沿つて展開した図であ
る。第７図は前記実施例の制御系のブロツク図、
第８図はこの実施例の制御動作を説明する流れ図
、第９図はこの制御動作に使用されるマツプ内容
の一例を示す特性図、第１０図は従来例の分配型
燃料噴射ポンプの断面図である。
８……高圧プランジヤポンプ、９……プランジ
ヤ、１６……カツトオフポート、１６Ａ……円柱
状孔、１７……コントロールスリーブ、４１……
コントロールスリーブの斜交端面、４２……カツ
トオフポートの開口部端面、４３……燃料噴射量
補正機構、５３……コントロールスリーブ端面、
５３Ａ……直交端面、５３Ｂ，５３Ｃ……斜交端
面、５５……制御レバー、５７……ピストン、５
９……ソレノイドコイル、６１……リターンスプ
リング、７１……エンジン回転数センサ、７２…
…上死点センサ、７３……アクセル開度センサ、
７４……コントローラ、７７……ソレノイド駆動
回路、９１……斜交端面、９２……平板状孔、９
３……開口部端面。
Fig. 1 is a diagram corresponding to claims of this invention, Fig. 2 is a sectional view of essential parts of an injection pump according to an embodiment of this invention,
3 is a sectional view taken along the line A--A in FIG. 2, and FIG. 4 is an enlarged view of the control sleeve portion of this embodiment. FIG. 5A is a front view of an example control sleeve applied to a four-cylinder engine, FIG. 5B is a side view of the control sleeve, and FIG. 6 is a developed view along the inner peripheral surface of the control sleeve. FIG. 7 is a block diagram of the control system of the above embodiment;
Fig. 8 is a flowchart explaining the control operation of this embodiment, Fig. 9 is a characteristic diagram showing an example of map contents used for this control operation, and Fig. 10 is a sectional view of a conventional distribution type fuel injection pump. It is. 8... High pressure plunger pump, 9... Plunger, 16... Cut-off port, 16A... Cylindrical hole, 17... Control sleeve, 41...
Oblique end face of control sleeve, 42... Opening end face of cut-off port, 43... Fuel injection amount correction mechanism, 53... End face of control sleeve,
53A... Orthogonal end surface, 53B, 53C... Oblique end surface, 55... Control lever, 57... Piston, 5
9...Solenoid coil, 61...Return spring, 71...Engine speed sensor, 72...
...Top dead center sensor, 73...Accelerator opening sensor,
74... Controller, 77... Solenoid drive circuit, 91... Oblique end surface, 92... Flat plate hole, 9
3...Opening end surface.
Claims (1)
回転運動して燃料の吸入圧送及び各気筒への燃料
分配を行うとともに、プランジヤに設けたカツト
オフポートの開口部がコントロールスリーブを外
れる位置で高圧燃料をポンプ室に逃して噴射終了
するようにした燃料噴射ポンプにおいて、前記カ
ツトオフポートが外れる側のコントロールスリー
ブ端面にプランジヤ軸に対して斜交する面を気筒
数分均等に、かつコントロールスリーブが外れる
側の前記カツトオフポート開口部の端面にこの斜
交する面と平行な面をそれぞれ形成するとともに
、コントロールスリーブをプランジヤ軸の回転方
向に回動可能に支持する一方で、コントロールス
リーブを回動して燃料噴射量を補正する機構を構
成したことを特徴とする燃料噴射ポンプの噴射量
制御装置。 The plunger of the high-pressure plunger pump reciprocates and rotates to suck in and force fuel and distribute fuel to each cylinder.The opening of the cut-off port provided in the plunger releases high-pressure fuel into the pump chamber at a position where the control sleeve is removed. In a fuel injection pump configured to terminate injection by releasing the cut-off port, the end face of the control sleeve on the side from which the cut-off port comes off has a surface obliquely intersecting with the plunger axis equal to the number of cylinders, and the cut-off port on the side from which the control sleeve comes off The oblique surface and parallel surface are formed on the end surface of the off-port opening, and the control sleeve is rotatably supported in the direction of rotation of the plunger shaft, while the control sleeve is rotated to control the fuel injection amount. An injection amount control device for a fuel injection pump, comprising a mechanism for correcting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18468987U JPH0188064U (en) | 1987-12-03 | 1987-12-03 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18468987U JPH0188064U (en) | 1987-12-03 | 1987-12-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0188064U true JPH0188064U (en) | 1989-06-09 |
Family
ID=31476031
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18468987U Pending JPH0188064U (en) | 1987-12-03 | 1987-12-03 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0188064U (en) |
-
1987
- 1987-12-03 JP JP18468987U patent/JPH0188064U/ja active Pending
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