JPS6421264U - - Google Patents
Info
- Publication number
- JPS6421264U JPS6421264U JP11546687U JP11546687U JPS6421264U JP S6421264 U JPS6421264 U JP S6421264U JP 11546687 U JP11546687 U JP 11546687U JP 11546687 U JP11546687 U JP 11546687U JP S6421264 U JPS6421264 U JP S6421264U
- Authority
- JP
- Japan
- Prior art keywords
- fuel
- fuel injection
- valve
- pressure
- fuel supply
- 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 24
- 238000002347 injection Methods 0.000 claims description 13
- 239000007924 injection Substances 0.000 claims description 13
- 238000002485 combustion reaction Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
Landscapes
- Fuel-Injection Apparatus (AREA)
Description
第１図は本考案の実施例に係るデイーゼルエン
ジンの燃料噴射装置に適用される燃料噴射ポンプ
の要部縦断面図、第２図は第１図に示した燃料噴
射ポンプを備えた燃料噴射装置における燃料圧力
変化状態図である。
１……プランジヤ、２……バレル、３……加圧
室、４……燃料供給圧力弁、５……リターン圧力
弁、６……絞り通路、７，８……スプリング、１
０……バルブホルダー、１１……外室、１２……
内室、３０……弁体ユニツト、４０……弁シート
部材、４１……弁体、４２……シート面、４３…
…連通路、４４……弁嵌挿穴、５１……バルブボ
デイ、５２……ボール、５３……通油孔、Ｘ……
燃料噴射弁、Ｙ……燃料供給通路、Ｚ……燃料噴
射ポンプ。
FIG. 1 is a vertical sectional view of a main part of a fuel injection pump applied to a diesel engine fuel injection device according to an embodiment of the present invention, and FIG. 2 is a fuel injection device equipped with the fuel injection pump shown in FIG. 1. It is a fuel pressure change state diagram in . DESCRIPTION OF SYMBOLS 1... Plunger, 2... Barrel, 3... Pressurization chamber, 4... Fuel supply pressure valve, 5... Return pressure valve, 6... Restriction passage, 7, 8... Spring, 1
0... Valve holder, 11... Outer chamber, 12...
Inner chamber, 30... Valve body unit, 40... Valve seat member, 41... Valve body, 42... Seat surface, 43...
...Communication path, 44...Valve insertion hole, 51...Valve body, 52...Ball, 53...Oil hole, X...
Fuel injection valve, Y... fuel supply passage, Z... fuel injection pump.
Claims (1)
けた燃料噴射弁とを接続する燃料供給通路に、上
記燃料噴射ポンプの燃料供給圧が所定圧力以上で
ある時にのみ開弁する燃料供給圧力弁を備えたデ
イーゼルエンジンの燃料噴射装置において、上記
燃料供給通路に、上記燃料供給圧力弁よりも上記
燃料噴射弁側における燃料圧力が上記燃料噴射ポ
ンプ側における燃料圧力よりも所定値以上高いと
きに開くリターン圧力弁と、上記リターン圧力弁
をバイパスする絞り通路とが上記燃料供給圧力弁
に対して並列状態で配置されていることを特徴と
するデイーゼルエンジンの燃料噴射装置。 A fuel supply pressure valve that opens only when the fuel supply pressure of the fuel injection pump is equal to or higher than a predetermined pressure is provided in a fuel supply passage connecting the fuel injection pump and a fuel injection valve provided facing a combustion chamber of the engine. In the fuel injection device for a diesel engine, the fuel supply passage has a return pressure that opens when the fuel pressure on the fuel injection valve side is higher than the fuel pressure on the fuel injection pump side by a predetermined value or more than the fuel supply pressure valve. A fuel injection device for a diesel engine, characterized in that a valve and a throttle passage that bypasses the return pressure valve are arranged in parallel with the fuel supply pressure valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11546687U JPS6421264U (en) | 1987-07-27 | 1987-07-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11546687U JPS6421264U (en) | 1987-07-27 | 1987-07-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6421264U true JPS6421264U (en) | 1989-02-02 |
Family
ID=31357149
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11546687U Pending JPS6421264U (en) | 1987-07-27 | 1987-07-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6421264U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0462353U (en) * | 1990-10-05 | 1992-05-28 |
-
1987
- 1987-07-27 JP JP11546687U patent/JPS6421264U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0462353U (en) * | 1990-10-05 | 1992-05-28 |
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