JPH0392540U - - Google Patents
Info
- Publication number
- JPH0392540U JPH0392540U JP15156589U JP15156589U JPH0392540U JP H0392540 U JPH0392540 U JP H0392540U JP 15156589 U JP15156589 U JP 15156589U JP 15156589 U JP15156589 U JP 15156589U JP H0392540 U JPH0392540 U JP H0392540U
- Authority
- JP
- Japan
- Prior art keywords
- feedback control
- engine
- fuel ratio
- sensor
- air
- 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 5
- 230000003197 catalytic effect Effects 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 2
- 239000007789 gas Substances 0.000 claims 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims 1
- 239000001301 oxygen Substances 0.000 claims 1
- 229910052760 oxygen Inorganic materials 0.000 claims 1
- 238000000746 purification Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
Description
第１図は本考案の全体構成図。第２図は実施例
の全体系統図。第３図、第４図は本考案の根拠の
一例を示す説明図。第５図、第６図は空燃比のフ
イードバツク制御の一例を示すフローチヤート。
第７図、第８図はフイードバツク制御定数の設定
を示すフローチヤート。
１……エンジン本体、１０……吸入空気量検出
手段、１９……燃料噴射弁、３１……三元触媒コ
ンバータ、３２……Ｏ２センサ。
Figure 1 is an overall configuration diagram of the present invention. FIG. 2 is an overall system diagram of the embodiment. FIGS. 3 and 4 are explanatory diagrams showing an example of the basis of the present invention. 5 and 6 are flowcharts showing an example of air-fuel ratio feedback control.
7 and 8 are flowcharts showing the setting of feedback control constants. DESCRIPTION OF SYMBOLS 1...Engine body, 10...Intake air amount detection means, 19...Fuel injection valve, 31...Three-way catalytic converter, 32... O2 sensor.
Claims (1)
コンバータと、排気ガス中の酸素濃度を検出する
Ｏ２センサとが設けられ、 該Ｏ２センサからの信号に基づいて、短かい周
期で、リツチ、リーンを反復させながら、空燃比
をフイードバツク制御するエンジンの空燃比制御
装置において、 エンジンの運転状態を検出する運転状態検出手
段と、 前記触媒コンバータの浄化率が最も良い値とな
るフイードバツク制御定数を記憶した記憶手段と
、 前記記憶手段に記憶されたフイードバツク制御
定数を取り出して、運転状態に応じたフイードバ
ツク制御定数を設定するフイードバツク制御定数
設定手段と、 を備えていることを特徴とするエンジンの空燃比
制御装置。[Claim for Utility Model Registration] The exhaust system of the engine is provided with a catalytic converter that purifies the exhaust gas and an O 2 sensor that detects the oxygen concentration in the exhaust gas, and based on the signal from the O 2 sensor. , an engine air-fuel ratio control device that feedback-controls the air-fuel ratio while repeating rich and lean cycles in short cycles, comprising: an operating state detection means for detecting the operating state of the engine; and a catalytic converter that has the best purification rate. A storage means for storing feedback control constants to be used as values; and a feedback control constant setting means for retrieving the feedback control constants stored in the storage means and setting feedback control constants according to operating conditions. An engine air-fuel ratio control device characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15156589U JPH0392540U (en) | 1989-12-29 | 1989-12-29 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15156589U JPH0392540U (en) | 1989-12-29 | 1989-12-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0392540U true JPH0392540U (en) | 1991-09-20 |
Family
ID=31697860
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15156589U Pending JPH0392540U (en) | 1989-12-29 | 1989-12-29 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0392540U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008262619A (en) * | 2007-04-10 | 2008-10-30 | Toshiba Corp | Hard disk drive device and display device |
-
1989
- 1989-12-29 JP JP15156589U patent/JPH0392540U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008262619A (en) * | 2007-04-10 | 2008-10-30 | Toshiba Corp | Hard disk drive device and display device |
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