JPS648541U - - Google Patents
Info
- Publication number
- JPS648541U JPS648541U JP10377787U JP10377787U JPS648541U JP S648541 U JPS648541 U JP S648541U JP 10377787 U JP10377787 U JP 10377787U JP 10377787 U JP10377787 U JP 10377787U JP S648541 U JPS648541 U JP S648541U
- Authority
- JP
- Japan
- Prior art keywords
- air
- fuel ratio
- oxygen concentration
- detection means
- operating
- 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
Landscapes
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Description
第１図は本考案の概念的構成を示したブロツク
図である。第２図は本考案の一実施例の機械的構
成図、第３図はその制御内容の要点を示す流れ図
である。第４図は一般の空燃比制御装置において
フイードバツク制御がなされる運転域とオープン
ループ制御がなされる運転域の関係を例示した運
転域説明図である。第５図はリーン域からリツチ
域へと移行する際の空燃比の変化の様子を正常時
と劣化時との比較において示した空燃比特性図で
ある。
１０……内燃機関本体、１２……排気通路、１
５……絞り弁、１６……吸気通路、１７……燃料
噴射弁、２０……空気流量センサ、２１……クラ
ンク角センサ、２２……水温センサ、２３……酸
素センサ。
FIG. 1 is a block diagram showing the conceptual structure of the present invention. FIG. 2 is a mechanical configuration diagram of an embodiment of the present invention, and FIG. 3 is a flowchart showing the main points of the control contents. FIG. 4 is an explanatory diagram of operating ranges illustrating the relationship between the operating range in which feedback control is performed and the operating range in which open loop control is performed in a general air-fuel ratio control device. FIG. 5 is an air-fuel ratio characteristic diagram showing how the air-fuel ratio changes when moving from a lean range to a rich range, comparing the normal state and the degraded state. 10... Internal combustion engine main body, 12... Exhaust passage, 1
5... Throttle valve, 16... Intake passage, 17... Fuel injection valve, 20... Air flow rate sensor, 21... Crank angle sensor, 22... Water temperature sensor, 23... Oxygen sensor.
Claims (1)
機関排気中の酸素濃度を検出する酸素濃度検出手
段と、前記各検出手段からの信号に基づき、供給
混合気の空燃比を比較的低負荷の第１の運転領域
では排気酸素濃度に応じてフイードバツク制御す
るとともに比較的高負荷の第２の運転領域ではオ
ープンループ制御する空燃比制御手段とを備えた
内燃機関において、前記第１の運転領域から第２
の運転領域に移行したときの空燃比を酸素濃度信
号に基づいて判定する過渡空燃比判定手段と、そ
の判定結果に基づき空燃比過大時に混合気を濃化
補正する過渡空燃比補正手段とを設けたこと特徴
とする内燃機関の空燃比制御装置。 operating state detection means for detecting the engine operating state;
an oxygen concentration detection means for detecting the oxygen concentration in the engine exhaust gas; and based on the signals from each of the detection means, the air-fuel ratio of the supplied air-fuel mixture is feedback-controlled in accordance with the exhaust oxygen concentration in a first operation region where the load is relatively low. and an air-fuel ratio control means that performs open-loop control in a relatively high-load second operating region.
Transient air-fuel ratio determining means for determining the air-fuel ratio when the operating region shifts to the operating range based on the oxygen concentration signal, and transient air-fuel ratio correcting means for enriching the air-fuel mixture when the air-fuel ratio is excessive based on the determination result. An air-fuel ratio control device for an internal combustion engine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10377787U JPS648541U (en) | 1987-07-06 | 1987-07-06 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10377787U JPS648541U (en) | 1987-07-06 | 1987-07-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS648541U true JPS648541U (en) | 1989-01-18 |
Family
ID=31334911
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10377787U Pending JPS648541U (en) | 1987-07-06 | 1987-07-06 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS648541U (en) |
-
1987
- 1987-07-06 JP JP10377787U patent/JPS648541U/ja active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS6425440U (en) | ||
| JPS648541U (en) | ||
| JPH0261326A (en) | Intake controller for internal combustion engine | |
| WO2019218934A1 (en) | Long-term learning value control device for internal combustion engine | |
| JP2733963B2 (en) | Air-fuel ratio control method for internal combustion engine | |
| JPS61173749U (en) | ||
| JPS6441645U (en) | ||
| JPS6028259U (en) | Air-fuel ratio control device for internal combustion engines | |
| JPS6351137U (en) | ||
| JPS62162364U (en) | ||
| JPS6328850U (en) | ||
| JPH01174559U (en) | ||
| JPS6441636A (en) | Air-fuel ratio control method for internal combustion engine | |
| JPS6352939U (en) | ||
| JPH0219850U (en) | ||
| JPS639439U (en) | ||
| JPH0176534U (en) | ||
| JPH0411238U (en) | ||
| JPH01166740U (en) | ||
| JPH0378941U (en) | ||
| JPS6324342U (en) | ||
| JPS62137352U (en) | ||
| JPS6216745U (en) | ||
| JPS6338642U (en) | ||
| JPS59142438U (en) | Air-fuel ratio control device for internal combustion engines |