JPS62162364U - - Google Patents
Info
- Publication number
- JPS62162364U JPS62162364U JP4976986U JP4976986U JPS62162364U JP S62162364 U JPS62162364 U JP S62162364U JP 4976986 U JP4976986 U JP 4976986U JP 4976986 U JP4976986 U JP 4976986U JP S62162364 U JPS62162364 U JP S62162364U
- Authority
- JP
- Japan
- Prior art keywords
- fuel ratio
- air
- proportional
- integral
- correction coefficient
- 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
- 230000001052 transient effect Effects 0.000 claims description 5
- 230000003247 decreasing effect Effects 0.000 claims 3
- 238000002485 combustion reaction Methods 0.000 claims 2
- 238000001514 detection method Methods 0.000 claims 2
- 239000000203 mixture Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
Landscapes
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Description
第１図は本考案の構成を示す機能ブロツク図、
第２図は本考案の一実施例を示すシステム図、第
３図〜第５図は制御内容を示すフローチヤート、
第６図は同上実施例における定常状態及び過渡状
態の比例・積分制御の様子を示す線図、第７図は
従来例における定常状態及び過渡状態の比例・積
分制御の様子を示す線図である。
１……機関、７……１次側スロツトル弁、１１
……燃料噴射弁、１６……Ｏ２センサ、２１……
スロツトル開度センサ、２２……コントロールユ
ニツト。
Figure 1 is a functional block diagram showing the configuration of the present invention.
Fig. 2 is a system diagram showing an embodiment of the present invention, Figs. 3 to 5 are flow charts showing control contents,
FIG. 6 is a diagram showing the state of proportional/integral control in the steady state and transient state in the same embodiment, and FIG. 7 is a diagram showing the state of proportional/integral control in the steady state and transient state in the conventional example. . 1... Engine, 7... Primary side throttle valve, 11
...Fuel injection valve, 16... O2 sensor, 21...
Throttle opening sensor, 22...control unit.
Claims (1)
気の空燃比を検出する空燃比検出手段と、空燃比
がリツチからリーン又はリーンからリツチに反転
した時に空燃比フイードバツク補正係数を所定の
比例分増大又は減少させる空燃比フイードバツク
補正係数比例制御手段と、空燃比のリーン・リツ
チに応じ空燃比フイードバツク補正係数を所定時
間毎に所定の積分分増大又は減少させる空燃比フ
イードバツク補正係数積分制御手段と、機関への
燃料供給手段による燃料供給量をそのときの空燃
比フイードバツク補正係数で補正する燃料供給量
補正手段とを備えて、空燃比を目標空燃比にフイ
ードバツク制御する内燃機関の空燃比フイードバ
ツク制御装置において、機関のスロツトル弁の開
度を検出するスロツトル弁開度検出手段と、スロ
ツトル弁の開度の変化率に基づいて定常状態と過
渡状態とを判定する定常・過渡判別手段と、定常
状態において前記比例分及び積分分を小さくし過
渡状態において前記比例分及び積分分を大きくす
る比例分及び積分分設定手段とを設けたことを特
徴とする内燃機関の空燃比フイードバツク制御装
置。 air-fuel ratio detection means for detecting engine exhaust components and thereby detecting the air-fuel ratio of the engine intake mixture; an air-fuel ratio feedback correction coefficient proportional control means for decreasing the air-fuel ratio feedback correction coefficient; an air-fuel ratio feedback correction coefficient integral control means for increasing or decreasing the air-fuel ratio feedback correction coefficient by a predetermined integral amount at predetermined time intervals according to lean/rich air-fuel ratio; An air-fuel ratio feedback control device for an internal combustion engine that feedback-controls the air-fuel ratio to a target air-fuel ratio, comprising: Throttle valve opening detection means for detecting the opening of the throttle valve of the engine; steady/transient discrimination means for determining a steady state and a transient state based on the rate of change in the opening of the throttle valve; 1. An air-fuel ratio feedback control device for an internal combustion engine, comprising proportional and integral setting means for decreasing the proportional and integral components and increasing the proportional and integral components in a transient state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4976986U JPS62162364U (en) | 1986-04-04 | 1986-04-04 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4976986U JPS62162364U (en) | 1986-04-04 | 1986-04-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62162364U true JPS62162364U (en) | 1987-10-15 |
Family
ID=30872525
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4976986U Pending JPS62162364U (en) | 1986-04-04 | 1986-04-04 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62162364U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5932644A (en) * | 1982-08-16 | 1984-02-22 | Toyota Motor Corp | Air-fuel ratio controlling method for internal combustion engine |
-
1986
- 1986-04-04 JP JP4976986U patent/JPS62162364U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5932644A (en) * | 1982-08-16 | 1984-02-22 | Toyota Motor Corp | Air-fuel ratio controlling method for internal combustion engine |