JPS6162256U - - Google Patents
Info
- Publication number
- JPS6162256U JPS6162256U JP14664384U JP14664384U JPS6162256U JP S6162256 U JPS6162256 U JP S6162256U JP 14664384 U JP14664384 U JP 14664384U JP 14664384 U JP14664384 U JP 14664384U JP S6162256 U JPS6162256 U JP S6162256U
- Authority
- JP
- Japan
- Prior art keywords
- air
- fuel ratio
- control device
- high load
- load state
- 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
- 238000001514 detection method Methods 0.000 claims description 2
- 239000000446 fuel Substances 0.000 claims 6
- 238000002485 combustion reaction Methods 0.000 claims 1
- 239000000203 mixture Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 241000234435 Lilium Species 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
Landscapes
- 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構成図、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
ブロツク図である。
主要部分の符号の説明、２…エアクリーナ、３
…気化器、５…絞り弁、６…ベンチユリ、８，９
…負圧検出孔、１０…排気マニホールド、１１…
吸気２次空気通路、１１ａ，１１ｂ…空気制御通
路、１２，１６…吸気２次空気制御弁、１５，１
８，３８，４８…電磁弁、１７，４３，４７…負
圧供給路、２１…一定負圧制御弁、２３…逆止弁
、２９…排気還流路、３０…排気還流制御弁、３
１…負圧制御部、５９…酸素濃度センサ、６０…
負圧スイツチ、７４…三元触媒。
FIG. 1 is a block diagram showing an embodiment of the present invention, and FIG. 2 is a block diagram showing a specific structure of a control circuit in the apparatus shown in FIG. Explanation of symbols of main parts, 2... Air cleaner, 3
... Carburetor, 5... Throttle valve, 6... Bench lily, 8,9
...Negative pressure detection hole, 10...Exhaust manifold, 11...
Intake secondary air passage, 11a, 11b... Air control passage, 12, 16... Intake secondary air control valve, 15, 1
8, 38, 48... Solenoid valve, 17, 43, 47... Negative pressure supply path, 21... Constant negative pressure control valve, 23... Check valve, 29... Exhaust gas recirculation path, 30... Exhaust gas recirculation control valve, 3
1...Negative pressure control section, 59...Oxygen concentration sensor, 60...
Negative pressure switch, 74...Three-way catalyst.
Claims (1)
濃度を検出し該検出結果に基づいて供給混合気の
空燃比をフイードバツク制御し、該フイードバツ
ク制御停止時には空燃比をリツチ化する空燃比制
御装置であつて、エンジンの所定高負荷状態を検
出し、該検出時には前記排気還流制御装置の排気
還流量を減少せしめかつ前記所定高負荷状態を所
定時間以上継続して検出したときには前記空燃比
のフイードバツク制御を停止することを特徴とす
る空燃比制御装置。 An air-fuel ratio control device that detects the concentration of exhaust components of an internal combustion engine equipped with an exhaust recirculation control device, performs feedback control on the air-fuel ratio of a supplied air-fuel mixture based on the detection result, and enriches the air-fuel ratio when the feedback control is stopped, A predetermined high load state of the engine is detected, and when the predetermined high load state is detected, the exhaust recirculation amount of the exhaust gas recirculation control device is reduced, and when the predetermined high load state is detected continuously for a predetermined time or more, the feedback control of the air-fuel ratio is stopped. An air-fuel ratio control device characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14664384U JPS6162256U (en) | 1984-09-28 | 1984-09-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14664384U JPS6162256U (en) | 1984-09-28 | 1984-09-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6162256U true JPS6162256U (en) | 1986-04-26 |
Family
ID=30704876
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14664384U Pending JPS6162256U (en) | 1984-09-28 | 1984-09-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6162256U (en) |
-
1984
- 1984-09-28 JP JP14664384U patent/JPS6162256U/ja active Pending
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