JPH0421759U - - Google Patents
Info
- Publication number
- JPH0421759U JPH0421759U JP6271390U JP6271390U JPH0421759U JP H0421759 U JPH0421759 U JP H0421759U JP 6271390 U JP6271390 U JP 6271390U JP 6271390 U JP6271390 U JP 6271390U JP H0421759 U JPH0421759 U JP H0421759U
- Authority
- JP
- Japan
- Prior art keywords
- fuel
- plunger
- passage
- timing sleeve
- injection pump
- 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.)
- Granted
Links
- 239000000446 fuel Substances 0.000 claims description 29
- 238000002347 injection Methods 0.000 claims description 9
- 239000007924 injection Substances 0.000 claims description 9
- 230000032258 transport Effects 0.000 claims 1
- 230000003628 erosive effect Effects 0.000 description 2
Landscapes
- Fuel-Injection Apparatus (AREA)
Description
第１図は本考案の第一の実施例による燃料噴射
ポンプ３０の要部縦断面図、第２図は本考案の第
二の実施例による燃料噴射ポンプ４０の要部縦断
面図、第３図は従来の燃料噴射ポンプ１の要部縦
断面図、第４図は従来の他の燃料噴射ポンプ２０
の要部縦断面図である。
１……燃料噴射ポンプ、２……ポンプハウジン
グ、３……縦孔、４……プランジヤバレル、５…
…プランジヤ、６……燃料溜り室、７……タイミ
ングスリーブ、７Ａ……タイミングスリーブ７の
案内用突出部、８……燃料供給パイプ、９……供
給孔、１０……供給通路、１１……縦方向案内溝
、１２……燃料通路（第１の燃料通路）、１３…
…プランジヤ室（燃料圧室）、１４……横方向係
合溝、１５……タイミングコントロールロツド、
１６……燃料吸排孔、１７……連通孔、１８……
制御用リード溝、１９……カツトオフ孔（スピル
ポート）、２０……燃料噴射ポンプ、２１……案
内ピン、３０……燃料噴射ポンプ、３１……第２
の燃料通路、３２……供給連通孔、４０……燃料
噴射ポンプ、４１……第２の燃料通路、４２……
供給連通孔、Ｅ……キヤビテーシヨンエロージヨ
ン（エロージヨン）、Ａ，Ｂ……燃料が滞留しや
すい燃料溜り室６内の部分。
FIG. 1 is a vertical cross-sectional view of a main part of a fuel injection pump 30 according to a first embodiment of the present invention, FIG. 2 is a longitudinal cross-sectional view of a main part of a fuel injection pump 40 according to a second embodiment of the present invention, and FIG. The figure is a vertical cross-sectional view of main parts of a conventional fuel injection pump 1, and FIG. 4 is another conventional fuel injection pump 20.
FIG. 1...Fuel injection pump, 2...Pump housing, 3...Vertical hole, 4...Plunger barrel, 5...
... Plunger, 6 ... Fuel reservoir chamber, 7 ... Timing sleeve, 7A ... Guiding protrusion of timing sleeve 7, 8 ... Fuel supply pipe, 9 ... Supply hole, 10 ... Supply passage, 11 ... Vertical guide groove, 12...Fuel passage (first fuel passage), 13...
... Plunger chamber (fuel pressure chamber), 14 ... Lateral engagement groove, 15 ... Timing control rod,
16...Fuel intake and exhaust hole, 17...Communication hole, 18...
Control lead groove, 19... cut-off hole (spill port), 20... fuel injection pump, 21... guide pin, 30... fuel injection pump, 31... second
fuel passage, 32... supply communication hole, 40... fuel injection pump, 41... second fuel passage, 42...
Supply communication hole, E... Cavitation erosion (erosion), A, B... Portions within the fuel reservoir chamber 6 where fuel tends to accumulate.
Claims (1)
から燃料溜り室を介して燃料を吸い込み、前記燃
料圧室からこの燃料を圧送するプランジヤと、 このプランジヤに摺動自在に外嵌するように該
プランジヤと前記プランジヤバレルとの間に位置
させるとともに、スピルポートを形成したタイミ
ングスリーブとを有する燃料噴射ポンプであつて
、 前記タイミングスリーブの移動により通路面積
が変化しないように位置させて前記燃料通路とは
別の第２の燃料通路を形成するとともに、 この第２の燃料通路と前記燃料溜り室とを連通
したことを特徴とする燃料噴射ポンプ。[Scope of Claim for Utility Model Registration] A plunger barrel having a fuel pressure chamber, and a plunger that reciprocates within the plunger barrel to suck in fuel from a fuel passage through a fuel reservoir chamber, and forcefully transports the fuel from the fuel pressure chamber. and a timing sleeve that is positioned between the plunger and the plunger barrel so as to be slidably fitted onto the plunger, and that has a spill port formed therein, the timing sleeve comprising: movement of the timing sleeve; A fuel injection system characterized in that a second fuel passage separate from the fuel passage is formed by being positioned so that the passage area does not change, and the second fuel passage and the fuel reservoir chamber are communicated with each other. pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990062713U JP2520229Y2 (en) | 1990-06-15 | 1990-06-15 | Fuel injection pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990062713U JP2520229Y2 (en) | 1990-06-15 | 1990-06-15 | Fuel injection pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0421759U true JPH0421759U (en) | 1992-02-24 |
| JP2520229Y2 JP2520229Y2 (en) | 1996-12-11 |
Family
ID=31592114
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1990062713U Expired - Lifetime JP2520229Y2 (en) | 1990-06-15 | 1990-06-15 | Fuel injection pump |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2520229Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59163169U (en) * | 1983-04-18 | 1984-11-01 | ヤンマーディーゼル株式会社 | Fuel injection pump for internal combustion engines |
-
1990
- 1990-06-15 JP JP1990062713U patent/JP2520229Y2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59163169U (en) * | 1983-04-18 | 1984-11-01 | ヤンマーディーゼル株式会社 | Fuel injection pump for internal combustion engines |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2520229Y2 (en) | 1996-12-11 |
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