JPS62150556U - - Google Patents
Info
- Publication number
- JPS62150556U JPS62150556U JP3827286U JP3827286U JPS62150556U JP S62150556 U JPS62150556 U JP S62150556U JP 3827286 U JP3827286 U JP 3827286U JP 3827286 U JP3827286 U JP 3827286U JP S62150556 U JPS62150556 U JP S62150556U
- Authority
- JP
- Japan
- Prior art keywords
- injection amount
- fuel injection
- valve
- feedback correction
- fuel
- 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.)
- Granted
Links
- 239000000446 fuel Substances 0.000 claims description 26
- 238000002347 injection Methods 0.000 claims description 16
- 239000007924 injection Substances 0.000 claims description 16
- 238000001514 detection method Methods 0.000 claims 5
- 238000002485 combustion reaction Methods 0.000 claims 2
- 230000003247 decreasing effect Effects 0.000 claims 1
- 239000000203 mixture Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
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ブロツク図、第２
図は本考案の一実施例の構成図、第３図は同上実
施例の燃料噴射量演算ルーチンを示すフローチヤ
ート、第４図は同上実施例のバイパス空気流量演
算ルーチンを示すフローチヤート、第５図は従来
例の構成図、第６図は別の従来例を示す要部断面
図である。
１…機関、２…吸気通路、３…スロツトル弁、
４…スロツトルセンサ、５…回転数センサ、７…
燃料噴射弁、９…Ｏ２センサ、１２…開閉弁、１
３…コントロールユニツト。
Figure 1 is a block diagram showing the configuration of the present invention;
FIG. 3 is a flowchart showing a fuel injection amount calculation routine of the same embodiment, FIG. 4 is a flowchart showing a bypass air flow rate calculation routine of the same embodiment, and FIG. The figure is a configuration diagram of a conventional example, and FIG. 6 is a sectional view of a main part showing another conventional example. 1... Engine, 2... Intake passage, 3... Throttle valve,
4...Throttle sensor, 5...Rotational speed sensor, 7...
Fuel injection valve, 9... O2 sensor, 12...Opening/closing valve, 1
3...Control unit.
Claims (1)
を検出するスロツトル開度検出手段と、機関回転
数を検出する機関回転数検出手段と、これら検出
手段により検出されたスロツトル開度と基本燃料
噴射量を設定する基本燃料噴射量設定手段と、機
関に供給される混合気の空燃比を検出する空燃比
検出手段と、所定の運転条件で空燃比検出手段に
より検出された実際の空燃比を目標値に近づける
ように基本燃料噴射量を補正するためのフイード
バツク補正係数を増減して設定するフイードバツ
ク補正係数設定手段と、前記基本燃料噴射量設定
手段で設定した基本燃料噴射量及び前記フイード
バツク補正係数設定手段で設定したフイードバツ
ク補正係数に基づいて燃料噴射量を演算する燃料
噴射量演算手段と、前記燃料噴射量演算手段で演
算した燃料噴射量に相当する駆動パルス信号に応
じてオンオフ的に燃料を機関に噴射供給する燃料
噴射手段とを備えてなる内燃機関の空燃比制御装
置において、前記スロツトル弁をバイパスして形
成したバイパス空間通路と、前記バイパス空気通
路に介装された開閉弁と、機関に駆動される負荷
の増大時に前記開閉弁を開く開閉弁制御手段と、
前記開閉弁の開時にバイパス空気通路に流れる空
気の基本バイパス空気流量を機関運転条件に応じ
て設定するバイパス空気流量設定手段と、前記フ
イードバツク補正係数設定手段により空燃比フイ
ードバツク制御時において前記開閉弁開時に設定
されたフイードバツク補正係数の平均値と同じく
開閉弁閉時に設定されたフイードバツク補正係数
の平均値との比を演算するフイードバツク補正係
数比演算手段と、前記基本バイパス空気流量設定
手段により設定された基本バイパス空気流量を、
前記フイードバツク補正係数比演算手段により演
算されたフイードバツク補正係数比に基づいて補
正するバイパス空気流量補正手段と、前記開閉弁
の開時、基本燃料噴射量設定手段により設定され
た基本燃料噴射量を、前記バイパス空気流量補正
手段により補正されたバイパス空気流量に基づい
て補正する基本燃料噴射量補正手段とを設けたこ
とを特徴とする内燃機関の空燃比制御装置。 A throttle opening detection means for detecting the opening of a throttle valve installed in the intake system of the engine, an engine rotation speed detection means for detecting the engine rotation speed, and the throttle opening and basic fuel detected by these detection means. A basic fuel injection amount setting means for setting the injection amount, an air-fuel ratio detection means for detecting the air-fuel ratio of the air-fuel mixture supplied to the engine, and an actual air-fuel ratio detected by the air-fuel ratio detection means under predetermined operating conditions. a feedback correction coefficient setting means for increasing or decreasing a feedback correction coefficient for correcting the basic fuel injection amount so as to bring it closer to the target value; and a basic fuel injection amount set by the basic fuel injection amount setting means and the feedback correction coefficient. a fuel injection amount calculation means for calculating the fuel injection amount based on the feedback correction coefficient set by the setting means; and a fuel injection amount calculation means that operates the fuel on and off in accordance with a drive pulse signal corresponding to the fuel injection amount calculated by the fuel injection amount calculation means. An air-fuel ratio control device for an internal combustion engine, comprising: a fuel injection means for injecting fuel into the engine; a bypass space passage formed by bypassing the throttle valve; an on-off valve interposed in the bypass air passage; on-off valve control means that opens the on-off valve when the load driven by the on-off valve increases;
bypass air flow rate setting means for setting a basic bypass air flow rate of air flowing into the bypass air passage when the on-off valve is opened according to engine operating conditions; and a feedback correction coefficient setting means for setting the on-off valve to open during air-fuel ratio feedback control. feedback correction coefficient ratio calculation means for calculating the ratio between the average value of the feedback correction coefficients set at the time of the opening and closing of the valve and the average value of the feedback correction coefficients set when the on-off valve is closed; Basic bypass air flow,
bypass air flow rate correction means for correcting based on the feedback correction coefficient ratio calculated by the feedback correction coefficient ratio calculation means; and a basic fuel injection amount set by the basic fuel injection amount setting means when the opening/closing valve is opened. An air-fuel ratio control device for an internal combustion engine, comprising: basic fuel injection amount correction means for correcting based on the bypass air flow rate corrected by the bypass air flow rate correction means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3827286U JPH0455234Y2 (en) | 1986-03-18 | 1986-03-18 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3827286U JPH0455234Y2 (en) | 1986-03-18 | 1986-03-18 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62150556U true JPS62150556U (en) | 1987-09-24 |
| JPH0455234Y2 JPH0455234Y2 (en) | 1992-12-25 |
Family
ID=30850360
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3827286U Expired JPH0455234Y2 (en) | 1986-03-18 | 1986-03-18 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0455234Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012013057A (en) * | 2010-07-05 | 2012-01-19 | Honda Motor Co Ltd | Fuel injection system for vehicle internal combustion engine |
-
1986
- 1986-03-18 JP JP3827286U patent/JPH0455234Y2/ja not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012013057A (en) * | 2010-07-05 | 2012-01-19 | Honda Motor Co Ltd | Fuel injection system for vehicle internal combustion engine |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0455234Y2 (en) | 1992-12-25 |
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