JPS62117249U - - Google Patents
Info
- Publication number
- JPS62117249U JPS62117249U JP14677985U JP14677985U JPS62117249U JP S62117249 U JPS62117249 U JP S62117249U JP 14677985 U JP14677985 U JP 14677985U JP 14677985 U JP14677985 U JP 14677985U JP S62117249 U JPS62117249 U JP S62117249U
- Authority
- JP
- Japan
- Prior art keywords
- air
- combustion engine
- internal combustion
- pressure
- valve
- 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 13
- 238000002485 combustion reaction Methods 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- 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。
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.
Claims (1)
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、前記内燃エンジ
ンがクランキング状態にある時前記圧力切換弁を
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、前記クランキング終
了後は前記圧力切換弁を閉弁圧供給状態に切り換
えること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ーオフ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
。 ３ 前記クランキング状態とは前記内燃エンジン
の回転数が所定値以下の状態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。[Claims for Utility Model Registration] 1. A negative pressure responsive control valve that is provided in a main fuel passage of an internal combustion engine and that controls the amount of fuel flowing through the main fuel passage; and a pressure switching valve that selectively supplies a valve opening pressure and a valve closing pressure to the pressure chamber, and when the internal combustion engine is in a cranking state, the pressure switching valve is switched to an opening pressure supply state. An air-fuel ratio control device for an internal combustion engine, characterized in that the air-fuel mixture is made to have a small air-fuel ratio and, after the completion of the cranking, the pressure switching valve is switched to a closed valve pressure supply state to make the air-fuel mixture to be a large air-fuel ratio. . 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 electromagnetic valve. 3. The air-fuel ratio control device for an internal combustion engine according to claim 1, wherein the cranking state is a state in which the rotational speed of the internal combustion engine is below a predetermined value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14677985U JPS62117249U (en) | 1985-09-25 | 1985-09-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14677985U JPS62117249U (en) | 1985-09-25 | 1985-09-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62117249U true JPS62117249U (en) | 1987-07-25 |
Family
ID=31059556
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14677985U Pending JPS62117249U (en) | 1985-09-25 | 1985-09-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62117249U (en) |
-
1985
- 1985-09-25 JP JP14677985U patent/JPS62117249U/ja active Pending
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