JPS6254257U - - Google Patents
Info
- Publication number
- JPS6254257U JPS6254257U JP14678585U JP14678585U JPS6254257U JP S6254257 U JPS6254257 U JP S6254257U JP 14678585 U JP14678585 U JP 14678585U JP 14678585 U JP14678585 U JP 14678585U JP S6254257 U JPS6254257 U JP S6254257U
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- air
- combustion engine
- internal combustion
- 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 12
- 238000002485 combustion reaction Methods 0.000 claims description 7
- 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)
- Control Of The Air-Fuel Ratio Of Carburetors (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.
補正 昭６１．１．２４
図面の簡単な説明を次のように補正する。
明細書第１５頁第６行乃至第７行に記載の「、
第３図は………サブルーチン」を削除する。Amendment January 24, 1981 The brief description of the drawing is amended as follows. "," described in page 15, lines 6 to 7 of the specification.
In Fig. 3, ``subroutine'' is deleted.
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、前記エンジン温
度を表わすパラメータ値が所定値以下で前記内燃
エンジンがクランキング状態にある時及び該クラ
ンキング終了後所定時間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つて小さな空燃
比の混合気にすると共に、前記パラメータ値が所
定値以上の時は前記圧力切換弁を閉弁圧状態に切
り換えることによつて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
。 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; a pressure switching valve that selectively selectively supplies a valve opening pressure and a valve closing pressure to the pressure chamber; For a predetermined period of time after cranking is completed, the pressure switching valve is switched to an open pressure supply state to create a mixture with a small air-fuel ratio, and when the parameter value is greater than a predetermined value, the pressure switching valve is closed. An air-fuel ratio control device for an internal combustion engine, characterized in that the air-fuel mixture is made to have a large air-fuel ratio by switching to a high-pressure state. 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. 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 |
|---|---|---|---|
| JP14678585U JPS6254257U (en) | 1985-09-25 | 1985-09-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14678585U JPS6254257U (en) | 1985-09-25 | 1985-09-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6254257U true JPS6254257U (en) | 1987-04-03 |
Family
ID=31059567
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14678585U Pending JPS6254257U (en) | 1985-09-25 | 1985-09-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6254257U (en) |
-
1985
- 1985-09-25 JP JP14678585U patent/JPS6254257U/ja active Pending
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