JPH0310054U - - Google Patents
Info
- Publication number
- JPH0310054U JPH0310054U JP7286089U JP7286089U JPH0310054U JP H0310054 U JPH0310054 U JP H0310054U JP 7286089 U JP7286089 U JP 7286089U JP 7286089 U JP7286089 U JP 7286089U JP H0310054 U JPH0310054 U JP H0310054U
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- fuel
- fuel injection
- engine
- outlet
- 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 14
- 238000002347 injection Methods 0.000 claims description 8
- 239000007924 injection Substances 0.000 claims description 8
- 238000011144 upstream manufacturing Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 5
Landscapes
- Output Control And Ontrol Of Special Type Engine (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Description
第１図〜第６図は本考案の実施例を示すもので
、第１図は実施例に係るエンジンの燃料噴射シス
テム図、第２図は燃料噴射弁の噴孔付近の要部断
面図、第３図はプレツシヤーレギユレータの概略
構成図、第４図は実施例の制御動作を示すフロー
チヤート図、第５図は該制御に用いるエンジン回
転数と負荷とをパラメータとするマツプの説明図
、第６図は実施例の作用の説明図である。第７図
は本考案の関連例を示すエンジンの燃料噴射シス
テム図である。
２……吸気通路、５……スロツトルバルブ、８
……燃料噴射弁、９……補助空気通路、１２……
噴孔、１８……燃料通路、２２……燃圧調整手段
（プレツシヤーレギユレータ）、３４……第１圧
力取出口、３５……切換手段（電磁切換弁）、３
７……第２圧力取出口。
1 to 6 show an embodiment of the present invention, in which FIG. 1 is a diagram of the fuel injection system of an engine according to the embodiment, FIG. 2 is a sectional view of the main part near the nozzle hole of the fuel injection valve, Fig. 3 is a schematic configuration diagram of the pressure regulator, Fig. 4 is a flowchart showing the control operation of the embodiment, and Fig. 5 is a map showing the engine speed and load used for the control as parameters. The explanatory diagram, FIG. 6, is an explanatory diagram of the operation of the embodiment. FIG. 7 is a diagram of an engine fuel injection system showing an example related to the present invention. 2...Intake passage, 5...Throttle valve, 8
... Fuel injection valve, 9 ... Auxiliary air passage, 12 ...
Nozzle hole, 18...Fuel passage, 22...Fuel pressure adjustment means (pressure regulator), 34...First pressure outlet, 35...Switching means (electromagnetic switching valve), 3
7...Second pressure outlet.
Claims (1)
されて、燃料噴射弁の噴孔付近に補助空気を導入
する補助空気通路と、上記燃料噴射弁に通じる燃
料通路に配備されて、上記補助空気通路に設けら
れた圧力取出口からの圧力を基準圧として該圧力
に対する燃料圧の差圧を一定に調整する燃圧調整
手段とを備えたエンジンの燃料噴射装置において
、スロツトルバルブ下流側の吸気通路に第２の圧
力取出口を設けるとともに、所定量以上の燃料が
要求されるエンジンの運転領域で、該第２圧力取
出口からの圧力を差圧調整用の基準圧として上記
燃圧調整手段に供給する切換手段を備えたことを
特徴とするエンジンの燃料噴射装置。 An auxiliary air passage that branches off from the intake passage on the upstream side of the throttle valve and introduces auxiliary air into the vicinity of the nozzle hole of the fuel injection valve; In an engine fuel injection system, a fuel injection device for an engine is provided with a fuel pressure adjusting means for adjusting the differential pressure of the fuel pressure with respect to the reference pressure using the pressure from the provided pressure outlet as a reference pressure. A switch that provides a second pressure outlet and supplies the pressure from the second pressure outlet to the fuel pressure adjustment means as a reference pressure for differential pressure adjustment in an engine operating range where a predetermined amount or more of fuel is required. 1. A fuel injection device for an engine, comprising: means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7286089U JPH0310054U (en) | 1989-06-20 | 1989-06-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7286089U JPH0310054U (en) | 1989-06-20 | 1989-06-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0310054U true JPH0310054U (en) | 1991-01-30 |
Family
ID=31611173
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7286089U Pending JPH0310054U (en) | 1989-06-20 | 1989-06-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0310054U (en) |
-
1989
- 1989-06-20 JP JP7286089U patent/JPH0310054U/ja active Pending
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