JPS6254253U - - Google Patents
Info
- Publication number
- JPS6254253U JPS6254253U JP14678185U JP14678185U JPS6254253U JP S6254253 U JPS6254253 U JP S6254253U JP 14678185 U JP14678185 U JP 14678185U JP 14678185 U JP14678185 U JP 14678185U JP S6254253 U JPS6254253 U JP S6254253U
- Authority
- JP
- Japan
- Prior art keywords
- air
- valve
- fuel
- control valve
- fuel ratio
- 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 15
- 238000002485 combustion reaction Methods 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims 3
- 239000000498 cooling water Substances 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Control Of The Air-Fuel Ratio Of Carburetors (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Description
図面は本考案の一実施例を示し、第１図は内燃
エンジンの空燃比制御装置の構成図、第２図は第
１図の電子コントロールユニツトを示すブロツク
回路図、第３図は空燃比制御実行プログラムを示
すサブルーチンである。
１……内燃エンジン、１０……負圧応動型制御
弁、１４……燃料通路、２０……作動負圧室、２
２……圧力切換弁、３１，３７……空気通路（エ
アブリード通路）、３２，３８……空気量制御弁
。
The drawings show one embodiment of the present invention, in which Fig. 1 is a block diagram of an air-fuel ratio control device for an internal combustion engine, Fig. 2 is a block circuit diagram showing the electronic control unit of Fig. 1, and Fig. 3 is an air-fuel ratio control system. This is a subroutine that indicates an execution program. DESCRIPTION OF SYMBOLS 1... Internal combustion engine, 10... Negative pressure responsive control valve, 14... Fuel passage, 20... Operating negative pressure chamber, 2
2...Pressure switching valve, 31, 37...Air passage (air bleed passage), 32, 38...Air amount control valve.
Claims (1)
燃料通路またはエアブリード通路に設けられたオ
ン―オフ２位置型電磁弁よりなる空気量制御弁と
、前記メイン系燃料通路に設けられ且つ該メイン
系燃料通路を流れる燃料量を制御する負圧応動型
制御弁と、該負圧応動型制御弁の作動負圧室へ開
弁圧及び閉弁圧を択一的に切換供給せしめる圧力
切換弁とを具備し、吸入空気温度が所定値以下の
時は前記圧力切換弁を開弁圧供給状態に切り換え
ることにより小さな空燃比の混合気にすると共に
、エンジン冷却水温度が所定値以下の時は前記空
気量制御弁により更に小さな空燃比の混合気にし
、且つエンジン冷却水温度が所定値以上に上昇時
は前記空気量制御弁により大きな空燃比の混合気
にすることを特徴とする内燃エンジンの空燃比制
御装置。 ２ 前記圧力切換弁はオン―オフ２位置作動型電
磁弁であることを特徴とする実用新案登録請求の
範囲第１項記載の内燃エンジンの空燃比制御装置
。[Scope of Claim for Utility Model Registration] 1. An air amount control valve consisting of an on-off two-position electromagnetic valve provided in a main system or slow system fuel passage or air bleed passage of an internal combustion engine, and an air amount control valve consisting of an on-off two-position solenoid valve installed in the main system fuel passage or slow system fuel passage or air bleed passage; a negative pressure responsive control valve that is provided and controls the amount of fuel flowing through the main system fuel passage, and selectively supplies a valve opening pressure and a valve closing pressure to an operating negative pressure chamber of the negative pressure responsive control valve. When the intake air temperature is below a predetermined value, the pressure selector valve is switched to an open pressure supply state to create a mixture with a small air-fuel ratio, and the engine cooling water temperature is set to a predetermined value. In the following cases, the air-fuel mixture is made to have a smaller air-fuel ratio by the air amount control valve, and when the engine cooling water temperature rises above a predetermined value, the air-fuel mixture is made to have a higher air-fuel ratio by the air amount control valve. Air-fuel ratio control device for internal combustion engines. 2. The air-fuel ratio control device for an internal combustion engine according to claim 1, wherein the pressure switching valve is an on-off two-position solenoid valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14678185U JPS6254253U (en) | 1985-09-25 | 1985-09-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14678185U JPS6254253U (en) | 1985-09-25 | 1985-09-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6254253U true JPS6254253U (en) | 1987-04-03 |
Family
ID=31059560
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14678185U Pending JPS6254253U (en) | 1985-09-25 | 1985-09-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6254253U (en) |
-
1985
- 1985-09-25 JP JP14678185U patent/JPS6254253U/ja active Pending
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