JPH0220768U - - Google Patents
Info
- Publication number
- JPH0220768U JPH0220768U JP9947088U JP9947088U JPH0220768U JP H0220768 U JPH0220768 U JP H0220768U JP 9947088 U JP9947088 U JP 9947088U JP 9947088 U JP9947088 U JP 9947088U JP H0220768 U JPH0220768 U JP H0220768U
- Authority
- JP
- Japan
- Prior art keywords
- air
- fuel ratio
- delay period
- output
- bleed passage
- 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
- Control Of The Air-Fuel Ratio Of Carburetors (AREA)
Description
第１図は本考案の全体構成図、第２図は本考案
の一実施例の全体図、第３図は同実施例の制御特
性図、第４図は同実施例の制御を実行するフロー
チヤートである。
１：気化器、２９：補正用メインジエツト、３
１：ソレノイドバルブ、３２：補正用スローエア
ジエツト、３３：プランジヤー、３４：ソレノイ
ドコイル、３５：コントロールユニツト。
Fig. 1 is an overall configuration diagram of the present invention, Fig. 2 is an overall diagram of an embodiment of the invention, Fig. 3 is a control characteristic diagram of the embodiment, and Fig. 4 is a flowchart for executing control of the embodiment. It's a chat. 1: Carburetor, 29: Main jet for correction, 3
1: Solenoid valve, 32: Correction slow air jet, 33: Plunger, 34: Solenoid coil, 35: Control unit.
Claims (1)
料の吐出量を調整するフイードバツクソレノイド
バルブを備えた気化器と、エンジンの空燃比が目
標値よりリツチであるかリーンであるかを検出す
る空燃比検出手段と、該空燃比検出手段の出力に
基づいて空燃比の判定を行うとともに、空燃比が
リツチ側からリーン側に変化したとき、所定のデ
イレー期間の間は変化前の空燃比を現在の空燃比
として判定する空燃比判定手段と、該空燃比判定
手段の出力に基づいて前記フイードバツクソレノ
イドバルブの制御量を設定するフイードバツク制
御量設定手段と、前記エアブリード通路の経年変
化を検出する経年変化検出手段と、該経年変化検
出手段の出力を受け、前記デイレー期間を、前記
エアブリード通路の経年変化が大きくなるほど長
くなるように変更するデイレー期間変更手段を備
えたことを特徴とするエンジンの空燃比制御装置
。 A carburetor equipped with a feedback solenoid valve that adjusts the amount of fuel discharged by controlling at least an air bleed passage, and an air-fuel ratio sensor that detects whether the engine's air-fuel ratio is richer or leaner than a target value. The air-fuel ratio is determined based on the output of the air-fuel ratio detection means, and when the air-fuel ratio changes from the rich side to the lean side, the air-fuel ratio before the change is changed to the current air-fuel ratio for a predetermined delay period. air-fuel ratio determination means for determining a fuel ratio; feedback control amount setting means for setting a control amount of the feedback solenoid valve based on the output of the air-fuel ratio determination means; and aging for detecting changes over time in the air bleed passage. An engine characterized by comprising: a change detection means; and a delay period changing means that receives the output of the aging change detection means and changes the delay period so that the larger the aging change of the air bleed passage, the longer the delay period. Air-fuel ratio control device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9947088U JPH0220768U (en) | 1988-07-26 | 1988-07-26 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9947088U JPH0220768U (en) | 1988-07-26 | 1988-07-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0220768U true JPH0220768U (en) | 1990-02-13 |
Family
ID=31326659
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9947088U Pending JPH0220768U (en) | 1988-07-26 | 1988-07-26 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0220768U (en) |
-
1988
- 1988-07-26 JP JP9947088U patent/JPH0220768U/ja active Pending