JPS61149749U - - Google Patents
Info
- Publication number
- JPS61149749U JPS61149749U JP3350485U JP3350485U JPS61149749U JP S61149749 U JPS61149749 U JP S61149749U JP 3350485 U JP3350485 U JP 3350485U JP 3350485 U JP3350485 U JP 3350485U JP S61149749 U JPS61149749 U JP S61149749U
- Authority
- JP
- Japan
- Prior art keywords
- engine
- temperature
- detection signal
- fuel
- air supply
- 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 6
- 238000001514 detection method Methods 0.000 claims 3
- 238000002485 combustion reaction Methods 0.000 claims 1
- 239000000203 mixture Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
- 102100029223 Teashirt homolog 1 Human genes 0.000 description 1
- 101710201303 Threonine synthase-like 1 Proteins 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
Landscapes
- Control Of The Air-Fuel Ratio Of Carburetors (AREA)
- Exhaust-Gas Circulating Devices (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Description
第１図は本考案の実施例を示す概略図、第２図
は第１図の装置中の制御回路の具体的構成を示す
ブロツク図、第３図及び第４図はＣＰＵの動作を
示すフロー図、第５図は減速２次空気の供給時間
ＴＳＨ１の設定特性を示す図である。
主要部分の符号の説明、２…エアクリーナ、３
…気化器、４…吸気マニホールド、６…絞り弁、
８…メインノズル、９…メイン燃料通路、１０…
メインジエツト、１２…パワーバルブ、１３…吸
気２次空気供給通路、１４…電磁開閉弁、１５…
排気マニホールド、１７…排気還流路、１８…排
気還流制御弁、２０…３方電磁弁、２５…絶対圧
センサ、２６…クランク角センサ、２７…冷却水
温スイツチ。
FIG. 1 is a schematic diagram showing an embodiment of the present invention, FIG. 2 is a block diagram showing the specific configuration of the control circuit in the device shown in FIG. 1, and FIGS. 3 and 4 are flowcharts showing the operation of the CPU. FIG. 5 is a diagram showing the setting characteristics of the supply time TSH1 of the decelerated secondary air. Explanation of symbols of main parts, 2... Air cleaner, 3
... Carburetor, 4... Intake manifold, 6... Throttle valve,
8... Main nozzle, 9... Main fuel passage, 10...
Main jet, 12... Power valve, 13... Intake secondary air supply passage, 14... Solenoid on-off valve, 15...
Exhaust manifold, 17...Exhaust recirculation path, 18...Exhaust recirculation control valve, 20...3-way solenoid valve, 25...Absolute pressure sensor, 26...Crank angle sensor, 27...Cooling water temperature switch.
Claims (1)
に再循環させる排気還流制御装置及びエンジン低
温時に供給混合気の燃料を増量させる燃料増量装
置の少なくとも一方を備えた内燃エンジンにおけ
る減速時２次空気供給装置であつて、エンジン温
度が所定温度以上にあるとき温度検出信号を発生
する温度スイツチ手段と、前記温度検出信号の発
生時にエンジンの減速状態を検出したとき２次空
気を前記吸気通路に供給する２次空気供給手段と
、前記温度検出信号の発生開始時点から所定時間
が経過するまでは前記排気還流制御装置の排気還
流作動を禁止させ、又は前記燃料増量装置の燃料
増量作動を継続させる制御手段とを含むことを特
徴とする減速時２次空気供給装置。 A secondary engine during deceleration in an internal combustion engine comprising at least one of an exhaust gas recirculation control device that recirculates a portion of exhaust gas to an intake passage downstream of a carburetor throttle valve, and a fuel increase device that increases the amount of fuel in a supplied air-fuel mixture when the engine is cold. The air supply device includes a temperature switch means for generating a temperature detection signal when the engine temperature is above a predetermined temperature, and a temperature switch means for supplying secondary air to the intake passage when a deceleration state of the engine is detected when the temperature detection signal is generated. and a secondary air supply means that prohibits the exhaust recirculation operation of the exhaust recirculation control device or continues the fuel increase operation of the fuel increase device until a predetermined period of time has elapsed from the time when the generation of the temperature detection signal started. A secondary air supply device during deceleration, characterized in that it includes a control means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3350485U JPS61149749U (en) | 1985-03-09 | 1985-03-09 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3350485U JPS61149749U (en) | 1985-03-09 | 1985-03-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61149749U true JPS61149749U (en) | 1986-09-16 |
Family
ID=30536017
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3350485U Pending JPS61149749U (en) | 1985-03-09 | 1985-03-09 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61149749U (en) |
-
1985
- 1985-03-09 JP JP3350485U patent/JPS61149749U/ja active Pending
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