JPH0294366U - - Google Patents
Info
- Publication number
- JPH0294366U JPH0294366U JP264689U JP264689U JPH0294366U JP H0294366 U JPH0294366 U JP H0294366U JP 264689 U JP264689 U JP 264689U JP 264689 U JP264689 U JP 264689U JP H0294366 U JPH0294366 U JP H0294366U
- Authority
- JP
- Japan
- Prior art keywords
- plunger
- pressure chamber
- discharge hole
- barrel
- leak passage
- 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
- High-Pressure Fuel Injection Pump Control (AREA)
- Fuel-Injection Apparatus (AREA)
Description
第１図は本考案による燃料噴射ポンプの一実施
例を示す要部分解斜視図、第２図Ａ，Ｂは同じく
それぞれ異なつた作用状態の要部断面図、第３図
はクランク角度と針弁リフト及び噴射圧との関係
を示すグラフ、第４図は従来の燃料噴射ポンプの
断面図である。
また、図面中２はプランジヤ、３はプランジヤ
バレル、６はコントロールグルーブ、７は吸排油
孔、１０は圧力室、１２は第１リーク通路、１３
は第２リーク通路である。
Fig. 1 is an exploded perspective view of the main parts showing an embodiment of the fuel injection pump according to the present invention, Figs. 2A and B are sectional views of the main parts in different operating states, and Fig. 3 shows the crank angle and needle valve. A graph showing the relationship between lift and injection pressure, and FIG. 4 is a sectional view of a conventional fuel injection pump. In addition, in the drawing, 2 is a plunger, 3 is a plunger barrel, 6 is a control groove, 7 is an oil intake/discharge hole, 10 is a pressure chamber, 12 is a first leak passage, 13
is the second leak passage.
Claims (1)
ジヤバレルに形成されて上記圧力室に連通し得る
吸排油孔と、プランジヤバレル内を往復動して上
記吸排油孔を開閉するプランジヤと、該プランジ
ヤの外周面に周方向に沿つて形成されたコントロ
ールグルーブとを有するデイーゼル機関の燃料噴
射ポンプにおいて、上記プランジヤに形成されか
つ一端が上記圧力室に臨むプランジヤの端面に開
口するとともに他端がプランジヤの外周面に開口
した第１リーク通路と、上記プランジヤバレルに
形成されて上記第１リーク通路の他端側に上記プ
ランジヤの圧送開始直後に一時的に連通する第２
リーク通路とを有し、これら両リーク通路のいず
れか一方の通路断面積が上記吸排油孔の通路断面
積より小さく設定されていることを特徴とするデ
イーゼル機関の燃料噴射ポンプ。 A plunger barrel having a pressure chamber, an oil suction and discharge hole formed in the plunger barrel and communicating with the pressure chamber, a plunger that reciprocates within the plunger barrel to open and close the oil suction and discharge hole, and an outer peripheral surface of the plunger. A fuel injection pump for a diesel engine having a control groove formed along a circumferential direction in the plunger, one end of which is formed in the plunger, one end opening at the end surface of the plunger facing the pressure chamber, and the other end opening at the outer peripheral surface of the plunger. The first leak passage is opened, and the second leak passage is formed in the plunger barrel and temporarily communicates with the other end of the first leak passage immediately after the plunger starts pumping.
A fuel injection pump for a diesel engine, characterized in that the cross-sectional area of one of the leak passages is set smaller than the cross-sectional area of the oil intake and discharge hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP264689U JPH0294366U (en) | 1989-01-17 | 1989-01-17 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP264689U JPH0294366U (en) | 1989-01-17 | 1989-01-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0294366U true JPH0294366U (en) | 1990-07-26 |
Family
ID=31203595
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP264689U Pending JPH0294366U (en) | 1989-01-17 | 1989-01-17 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0294366U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0495632U (en) * | 1991-01-19 | 1992-08-19 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5237709U (en) * | 1975-09-10 | 1977-03-17 | ||
| JPS59200060A (en) * | 1983-04-28 | 1984-11-13 | Hino Motors Ltd | Fuel injecting device |
-
1989
- 1989-01-17 JP JP264689U patent/JPH0294366U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5237709U (en) * | 1975-09-10 | 1977-03-17 | ||
| JPS59200060A (en) * | 1983-04-28 | 1984-11-13 | Hino Motors Ltd | Fuel injecting device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0495632U (en) * | 1991-01-19 | 1992-08-19 |
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