JPH0352367U - - Google Patents
Info
- Publication number
- JPH0352367U JPH0352367U JP11277089U JP11277089U JPH0352367U JP H0352367 U JPH0352367 U JP H0352367U JP 11277089 U JP11277089 U JP 11277089U JP 11277089 U JP11277089 U JP 11277089U JP H0352367 U JPH0352367 U JP H0352367U
- Authority
- JP
- Japan
- Prior art keywords
- air
- fuel
- fuel ratio
- correction value
- feedback
- 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 22
- 239000000203 mixture Substances 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 3
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
Landscapes
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Description
第１図は本考案に係るエンジンの蒸発燃料制御
装置の概略構成を示す図、第２図は燃料噴射制御
の内容を概略的に示すフローチヤート、第３図は
蒸発燃料制御の内容を概略的に示すフローチヤー
ト、第４図はフイードバツク補正制御量の上限値
と下限値とを示す図、第５図はデユーテイーソレ
ノイドバルブの制御マツプ、第６図は蒸発燃料の
供給のタイムチヤートである。
２……エンジン、４……吸気系、６……排気系
、１０……燃料噴射弁、１２……スロツトル開度
センサ、１４……空燃比センサ、１６……制御ユ
ニツト（フイードバツク補正制御手段、学習補正
制御手段）、１８……回転センサ、２０……エア
ーフローセンサ、２２……蒸発燃料供給手段、３
２……蒸発燃料供給制御手段。
Fig. 1 is a diagram showing a schematic configuration of an engine evaporative fuel control device according to the present invention, Fig. 2 is a flowchart schematically showing the details of fuel injection control, and Fig. 3 is a schematic diagram showing the details of evaporative fuel control. 4 is a diagram showing the upper and lower limits of the feedback correction control amount, FIG. 5 is a control map for the duty solenoid valve, and FIG. 6 is a time chart for supplying evaporative fuel. . 2... Engine, 4... Intake system, 6... Exhaust system, 10... Fuel injection valve, 12... Throttle opening sensor, 14... Air-fuel ratio sensor, 16... Control unit (feedback correction control means, learning correction control means), 18... Rotation sensor, 20... Air flow sensor, 22... Evaporated fuel supply means, 3
2... Evaporated fuel supply control means.
Claims (1)
と、 空燃比センサで検出した検出空燃比と予め設定
されている目標空燃比との偏差からフイードバツ
ク補正値を求め、当該フイードバツク補正値に基
づいてエンジンに供給する混合気の空燃比を目標
空燃比にフイードバツク制御するフイードバツク
補正制御手段と、 前記フイードバツク補正値の経歴を学習して学
習補正値を求め、当該学習補正値に基づいて前記
混合気の空燃比を目標空燃比にフイードバツク制
御する学習補正制御手段と、 前記学習補正値が所定値以下のときに、蒸発燃
料の供給を停止させる蒸発燃料供給制御手段と、 を備えたことを特徴とするエンジンの蒸発燃料制
御装置。[Scope of Claim for Utility Model Registration] An evaporative fuel supply means for supplying evaporative fuel to an intake system, and a feedback correction value determined from the deviation between the detected air-fuel ratio detected by an air-fuel ratio sensor and a preset target air-fuel ratio, a feedback correction control means for feedback-controlling the air-fuel ratio of the air-fuel mixture supplied to the engine to a target air-fuel ratio based on the feedback correction value; learning the history of the feedback correction value to obtain a learning correction value; learning correction control means for feedback-controlling the air-fuel ratio of the air-fuel mixture to a target air-fuel ratio based on; and evaporative fuel supply control means for stopping the supply of evaporative fuel when the learning correction value is less than or equal to a predetermined value. An evaporative fuel control device for an engine, characterized by comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11277089U JPH0352367U (en) | 1989-09-28 | 1989-09-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11277089U JPH0352367U (en) | 1989-09-28 | 1989-09-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0352367U true JPH0352367U (en) | 1991-05-21 |
Family
ID=31661208
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11277089U Pending JPH0352367U (en) | 1989-09-28 | 1989-09-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0352367U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100721509B1 (en) * | 2006-11-01 | 2007-05-23 | 대동안전주식회사 | Non-slip paving material and construction method for road using plastic waste clay brick |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62206262A (en) * | 1986-03-07 | 1987-09-10 | Mitsubishi Motors Corp | Electronic air-fuel ratio controlling method for internal combustion engine |
-
1989
- 1989-09-28 JP JP11277089U patent/JPH0352367U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62206262A (en) * | 1986-03-07 | 1987-09-10 | Mitsubishi Motors Corp | Electronic air-fuel ratio controlling method for internal combustion engine |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100721509B1 (en) * | 2006-11-01 | 2007-05-23 | 대동안전주식회사 | Non-slip paving material and construction method for road using plastic waste clay brick |