JPH0325827U - - Google Patents
Info
- Publication number
- JPH0325827U JPH0325827U JP8646489U JP8646489U JPH0325827U JP H0325827 U JPH0325827 U JP H0325827U JP 8646489 U JP8646489 U JP 8646489U JP 8646489 U JP8646489 U JP 8646489U JP H0325827 U JPH0325827 U JP H0325827U
- Authority
- JP
- Japan
- Prior art keywords
- spill
- fuel injection
- load
- ring
- port
- 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 11
- 239000007924 injection Substances 0.000 claims description 11
- 239000000446 fuel Substances 0.000 claims description 9
- 230000007423 decrease Effects 0.000 claims 4
- 230000003111 delayed effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- High-Pressure Fuel Injection Pump Control (AREA)
- Fuel-Injection Apparatus (AREA)
Description
第１図はこの考案の分配型燃料噴射ポンプの断
面図。第２図はフエイスカムとローラの位置関係
を説明する部分的斜視図。第３図はフエイスカム
のカムノーズの上り面のプロフイール、噴射率、
噴射期間をカム角度に対して示すグラフ。第４図
は第１スピルリングの第１スピルポートに対する
位置、及び第２スピルリングの第１スピルポート
に対する位置関係をアイドルと、全負荷時とで夫
々示す図。
１０…燃料噴射ポンプ、１２…ハウジング、１
６…プランジヤ、１８…加圧室、２０…フエイス
カム、２１…継手、２４…駆動軸、２６…ローラ
リング、２８…ローラ、３２…凹部、３４…給油
ポート、４０…吐出通路、４４…ポンプロータ、
５２…第１のスピルリング、５４…第１のスピル
ポート、５６…第２のスピルリング、５８…第２
のスピルポート、６０…アジヤステイングレバー
、８０…テンシヨンレバー、９０…コントロール
レバー、９６…第１リンク、１００…ガバナスリ
ーブ、１０２…ガバナピン、１０８…フライウエ
イト、１１４…制御リング、１１６…反転リンク
、１２０…反転リンク。
FIG. 1 is a sectional view of the distribution type fuel injection pump of this invention. FIG. 2 is a partial perspective view illustrating the positional relationship between the face cam and the roller. Figure 3 shows the profile of the upward surface of Facecam's cam nose, the injection rate,
Graph showing injection period versus cam angle. FIG. 4 is a diagram showing the position of the first spill ring with respect to the first spill port and the positional relationship of the second spill ring with respect to the first spill port at idle and under full load, respectively. 10...Fuel injection pump, 12...Housing, 1
6... Plunger, 18... Pressure chamber, 20... Face cam, 21... Joint, 24... Drive shaft, 26... Roller ring, 28... Roller, 32... Recess, 34... Oil supply port, 40... Discharge passage, 44... Pump rotor ,
52...first spill ring, 54...first spill port, 56...second spill ring, 58...second
Spill port, 60...Adjustment lever, 80...Tension lever, 90...Control lever, 96...First link, 100...Governor sleeve, 102...Governor pin, 108...Fly weight, 114...Control ring, 116...Reversing link , 120...Reverse link.
Claims (1)
はカム角度の小さいときの大送油率とカム角度の
大きいところでの小送油率とが２段に得られるよ
うに形成され、第１のスピルポート及び第１のス
ピルリングの組と、第２のスピルポートと第２の
スピルリングとの組とが具備され、第１のスピル
リングの第１のスピルポートに対する位置及び第
２のスピルリングの第２のスピルポートに対する
位置はガバナ機構により負荷に応じて変化されて
、第１のスピルリングの位置により燃料噴射の終
了時期が該終了時期が負荷の減少と共に遅くなる
ように制御され、第２のスピルリングにより燃料
噴射の開始時期が該開始時期が負荷の減少と共に
遅くなるように制御され、負荷に対する第２のス
ピルリングの移動は負荷に対する第１のスピルリ
ングの移動より増幅して行われ、燃料噴射開始時
期と燃料噴射終了時間との間のプランジヤのスト
ローク量が負荷の増大と共に増大されることを特
徴とするデイーゼル機関の燃料噴射ポンプ。 In the fuel injection pump, the cam profile is formed so that a large oil feed rate when the cam angle is small and a small oil feed rate when the cam angle is large are obtained in two stages, and the first spill port and the first oil feed rate are formed in two stages. a set of spill rings and a set of a second spill port and a second spill ring, the position of the first spill ring with respect to the first spill port and the second spill of the second spill ring are provided. The position relative to the port is changed by the governor mechanism according to the load, and the position of the first spill ring controls the end timing of fuel injection so that the end timing becomes later as the load decreases, and the second spill ring controls the end timing of fuel injection so that the end timing becomes later as the load decreases. The start timing of fuel injection is controlled so that the start timing becomes later as the load decreases, and the movement of the second spill ring relative to the load is amplified compared to the movement of the first spill ring relative to the load, and the start time of fuel injection is controlled to be delayed as the load decreases. A fuel injection pump for a diesel engine, characterized in that the stroke amount of the plunger between the time and the end time of fuel injection is increased as the load increases.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8646489U JPH0325827U (en) | 1989-07-25 | 1989-07-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8646489U JPH0325827U (en) | 1989-07-25 | 1989-07-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0325827U true JPH0325827U (en) | 1991-03-18 |
Family
ID=31636008
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8646489U Pending JPH0325827U (en) | 1989-07-25 | 1989-07-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0325827U (en) |
-
1989
- 1989-07-25 JP JP8646489U patent/JPH0325827U/ja active Pending
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