JPS6363565U - - Google Patents
Info
- Publication number
- JPS6363565U JPS6363565U JP15852386U JP15852386U JPS6363565U JP S6363565 U JPS6363565 U JP S6363565U JP 15852386 U JP15852386 U JP 15852386U JP 15852386 U JP15852386 U JP 15852386U JP S6363565 U JPS6363565 U JP S6363565U
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- valve
- internal combustion
- negative pressure
- combustion engine
- 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 10
- 238000002485 combustion reaction Methods 0.000 claims description 6
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Means For Warming Up And Starting Carburetors (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、８……負圧応動型制御弁
、１２……燃料通路（メイン系燃料通路）、１８
……作動負圧室、２０……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. 1... Internal combustion engine, 8... Negative pressure responsive control valve, 12... Fuel passage (main system fuel passage), 18
...Operating negative pressure chamber, 20...Pressure switching valve.
Claims (1)
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する圧
力切換弁とを具備する内燃エンジンの空燃比制御
装置において、前記内燃エンジンがクランキング
状態にある間、前記圧力切換弁はエンジン回転数
が所定値未満のときに前記作動負圧室へ開弁圧を
供給し、前記エンジン回転数が前記所定値以上の
ときに前記作動負圧室へ閉弁圧を供給することを
特徴とする内燃エンジンの空燃比制御装置。 A negative pressure responsive control valve is provided in a main fuel passage of an internal combustion engine and controls the amount of fuel flowing through the main fuel passage, and a valve opening pressure and a closing pressure are supplied to the operating negative pressure chamber of the negative pressure responsive control valve. In the air-fuel ratio control device for an internal combustion engine, the air-fuel ratio control device includes a pressure switching valve that selectively switches and supplies the pressure, while the internal combustion engine is in a cranking state, the pressure switching valve is configured to control the pressure switching valve when the engine speed is less than a predetermined value. An air-fuel ratio control device for an internal combustion engine, characterized in that a valve-opening pressure is supplied to the operating negative pressure chamber, and a valve-closing pressure is supplied to the operating negative pressure chamber when the engine speed is equal to or higher than the predetermined value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15852386U JPS6363565U (en) | 1986-10-16 | 1986-10-16 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15852386U JPS6363565U (en) | 1986-10-16 | 1986-10-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6363565U true JPS6363565U (en) | 1988-04-26 |
Family
ID=31082092
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15852386U Pending JPS6363565U (en) | 1986-10-16 | 1986-10-16 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6363565U (en) |
-
1986
- 1986-10-16 JP JP15852386U patent/JPS6363565U/ja active Pending
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