JPH0347461U - - Google Patents
Info
- Publication number
- JPH0347461U JPH0347461U JP10819189U JP10819189U JPH0347461U JP H0347461 U JPH0347461 U JP H0347461U JP 10819189 U JP10819189 U JP 10819189U JP 10819189 U JP10819189 U JP 10819189U JP H0347461 U JPH0347461 U JP H0347461U
- Authority
- JP
- Japan
- Prior art keywords
- plunger
- injection pump
- sliding surface
- fuel
- fuel injection
- 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 10
- 238000002347 injection Methods 0.000 claims description 8
- 239000007924 injection Substances 0.000 claims description 8
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
Landscapes
- Fuel-Injection Apparatus (AREA)
Description
第１図は請求項１に記載した考案の一実施例に
係る噴射ポンプの要部拡大断面図、第２図は請求
項２に記載した考案の一実施例に係る噴射ポンプ
の要部拡大断面図、第３図は従来のプレストロー
ク制御式噴射ポンプの断面図、第４図はコントロ
ールスリーブの制御機構の概略斜視図、第５図ａ
乃至ｄは燃料圧送プロセスの説明図、第６図は第
３図に示す噴射ポンプの要部拡大断面図である。
１，３７……プランジヤ、５……コントロール
スリーブ、１１……吸油ポート、１９，４６……
カム室、２５，４５……圧力室、２７，４１……
リード、２９……排油ポート、３１……燃料溜室
、３１ａ，４３ａ……摺動面側開口下縁部、３３
，３９……プランジヤバレル、３５，４７……開
口縁部、４３……吸入・排出ポート。
FIG. 1 is an enlarged sectional view of a main part of an injection pump according to an embodiment of the invention set forth in claim 1, and FIG. 2 is an enlarged sectional view of a main part of an injection pump according to an embodiment of the invention set forth in claim 2. Figure 3 is a sectional view of a conventional pre-stroke controlled injection pump, Figure 4 is a schematic perspective view of the control sleeve control mechanism, and Figure 5a.
7d to d are explanatory diagrams of the fuel pumping process, and FIG. 6 is an enlarged sectional view of the main part of the injection pump shown in FIG. 3. 1, 37... Plunger, 5... Control sleeve, 11... Oil absorption port, 19, 46...
Cam chamber, 25, 45... Pressure chamber, 27, 41...
Lead, 29...Drain port, 31...Fuel storage chamber, 31a, 43a...Lower edge of sliding surface side opening, 33
, 39... plunger barrel, 35, 47... opening edge, 43... suction/discharge port.
Claims (1)
とプランジヤバレルとの摺動面に開口する燃料溜
室からプランジヤに設けた吸入ポートを介して燃
料を圧力室に吸引してなるデイーゼルエンジンの
燃料噴射ポンプに於て、上記燃料溜室の摺動面側
開口縁部をアール形状とすると共に、上記プラン
ジヤを駆動するカムシヤフトを装着したカム室側
のプランジヤバレル中央の開口縁部を、鋭利な角
部としたことを特徴とするデイーゼルエンジンの
燃料噴射ポンプ。 (2) プランジヤバレルに、当該プランジヤバレ
ルとプランジヤとの摺動面に開口する燃料の吸排
出ポートを形成してなるデイーゼルエンジンの燃
料噴射ポンプに於て、上記吸排出ポートの摺動面
側開口縁部をアール形状とすると共に、上記プラ
ンジヤを駆動するカムシヤフトを装着したカム室
側のプランジヤバレル中央の開口縁部を、鋭利な
角部としたことを特徴とする燃料噴射ポンプ。[Scope of Claim for Utility Model Registration] (1) As the plunger is driven, fuel is sucked into the pressure chamber from the fuel reservoir opening at the sliding surface between the plunger and the plunger barrel through the suction port provided in the plunger. In a fuel injection pump for a diesel engine, the opening edge on the sliding surface side of the fuel reservoir is rounded, and the opening edge in the center of the plunger barrel on the cam chamber side equipped with the camshaft that drives the plunger. A diesel engine fuel injection pump characterized by having sharp corners. (2) In a diesel engine fuel injection pump in which a plunger barrel has a fuel suction and discharge port that opens on the sliding surface between the plunger barrel and the plunger, the opening on the sliding surface side of the said suction and discharge port. A fuel injection pump characterized in that the edge is rounded and the opening edge at the center of the plunger barrel on the side of the cam chamber equipped with the camshaft for driving the plunger is a sharp corner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10819189U JPH0347461U (en) | 1989-09-14 | 1989-09-14 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10819189U JPH0347461U (en) | 1989-09-14 | 1989-09-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0347461U true JPH0347461U (en) | 1991-05-02 |
Family
ID=31656845
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10819189U Pending JPH0347461U (en) | 1989-09-14 | 1989-09-14 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0347461U (en) |
-
1989
- 1989-09-14 JP JP10819189U patent/JPH0347461U/ja active Pending
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