JPS61175564U - - Google Patents
Info
- Publication number
- JPS61175564U JPS61175564U JP5884685U JP5884685U JPS61175564U JP S61175564 U JPS61175564 U JP S61175564U JP 5884685 U JP5884685 U JP 5884685U JP 5884685 U JP5884685 U JP 5884685U JP S61175564 U JPS61175564 U JP S61175564U
- Authority
- JP
- Japan
- Prior art keywords
- plunger
- annular groove
- fuel injection
- sleeve member
- passage means
- 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 12
- 238000002347 injection Methods 0.000 claims description 10
- 239000007924 injection Substances 0.000 claims description 10
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- High-Pressure Fuel Injection Pump Control (AREA)
- Fuel-Injection Apparatus (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Description
第１図は本考案による分配型燃料噴射ポンプを
用いた燃料噴射装置の一実施例を示すための分配
型燃料噴射ポンプの要部断面図を含む構成図、第
２図は第１図に示す分配燃料噴射ポンプのカムデ
イスクのカムリフト特性を示すグラフ、第３図は
第１図に示した制御ユニツトの構成を示すブロツ
ク図である。
１……分配型燃料噴射ポンプ、２……燃料噴射
装置、７……プランジヤ、８……プランジヤバレ
ル、１０……高圧室、１１……通路、１２……低
圧部、１４……コントロールスリーブ、１６……
制御ユニツト、１５……電磁アクチエータ、１８
……環状溝、１９……ストローク制御スリーブ、
１９ａ……連通孔、２０，２１，２２……吸入ス
リツト、２３……連通孔、２６……アクチエータ
。
FIG. 1 is a configuration diagram including a cross-sectional view of the main parts of the distribution type fuel injection pump to show an embodiment of the fuel injection device using the distribution type fuel injection pump according to the present invention, and FIG. 2 is the same as that shown in FIG. 1. FIG. 3 is a graph showing the cam lift characteristics of the cam disc of the distributed fuel injection pump, and FIG. 3 is a block diagram showing the configuration of the control unit shown in FIG. 1. DESCRIPTION OF SYMBOLS 1... Distribution type fuel injection pump, 2... Fuel injection device, 7... Plunger, 8... Plunger barrel, 10... High pressure chamber, 11... Passage, 12... Low pressure part, 14... Control sleeve, 16...
Control unit, 15... Electromagnetic actuator, 18
... annular groove, 19 ... stroke control sleeve,
19a... Communication hole, 20, 21, 22... Suction slit, 23... Communication hole, 26... Actuator.
Claims (1)
ランジヤと、該プランジヤの先端部と作動可能に
嵌合するプランジヤバレルと、燃料噴射終了のタ
イミングを調節するため前記プランジヤに嵌め合
されているコントロールスリーブとを備え、前記
プランジヤによつて前記プランジヤバレル内に形
成される高圧室内の燃料を前記プランジヤの運動
に応じて加圧して取り出すようにした分配型燃料
噴射ポンプにおいて、前記プランジヤの外周面に
形成された環状溝と、前記プランジヤ内に形成さ
れ前記高圧室と前記環状溝とを連通する第１通路
手段と、前記環状溝から前記プランジヤの後端に
向けて延びるように形成された少なくとも１つの
吸入スリツトと、前記環状溝と前記吸入スリツト
とを覆うように前記プランジヤに油密状態で且つ
滑動自在に嵌め合されるスリーブ部材と、該スリ
ーブ部材が前記プランジヤの軸線方向にのみ運動
可能となるように該スリーブ部材を案内する案内
手段と、前記プランジヤの往復運動期間中の少な
くとも一部の期間前記環状溝又は前記吸入スリツ
トの少なくともいずれか一方を介して前記高圧室
の燃料が供給されているポンプ本体内の低圧部に
連通させるため前記スリーブ部材に形成された第
２通路手段と、前記プランジヤが所定の基準状態
にある場合の前記第２通路手段と前記環状溝との
相対位置関係を調節するための調節手段とを備え
たことを特徴とする分配型燃料噴射ポンプ。 A plunger that rotates and reciprocates in synchronization with the rotation of the engine, a plunger barrel that is operatively fitted to the tip of the plunger, and a control sleeve that is fitted to the plunger to adjust the timing of ending fuel injection. In the distribution type fuel injection pump, the fuel in the high pressure chamber formed in the plunger barrel by the plunger is pressurized and taken out according to the movement of the plunger, the fuel injection pump comprising: a first passage means formed in the plunger and communicating between the high pressure chamber and the annular groove; and at least one passage means formed in the annular groove extending toward the rear end of the plunger. a suction slit; a sleeve member slidably fitted to the plunger in an oil-tight manner so as to cover the annular groove and the suction slit; and the sleeve member is movable only in the axial direction of the plunger. a guide means for guiding the sleeve member so that fuel is supplied to the high pressure chamber through at least one of the annular groove and the suction slit during at least a part of the reciprocating period of the plunger; Adjusting the relative positional relationship between a second passage means formed in the sleeve member to communicate with a low pressure part within the pump body, and the second passage means and the annular groove when the plunger is in a predetermined reference state. A distribution type fuel injection pump, characterized in that it is equipped with an adjustment means for adjusting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5884685U JPS61175564U (en) | 1985-04-22 | 1985-04-22 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5884685U JPS61175564U (en) | 1985-04-22 | 1985-04-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61175564U true JPS61175564U (en) | 1986-11-01 |
Family
ID=30584731
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5884685U Pending JPS61175564U (en) | 1985-04-22 | 1985-04-22 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61175564U (en) |
-
1985
- 1985-04-22 JP JP5884685U patent/JPS61175564U/ja active Pending
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