JPS6143953U - Air-fuel ratio control device for internal combustion engines - Google Patents

Air-fuel ratio control device for internal combustion engines

Info

Publication number
JPS6143953U
JPS6143953U JP13019684U JP13019684U JPS6143953U JP S6143953 U JPS6143953 U JP S6143953U JP 13019684 U JP13019684 U JP 13019684U JP 13019684 U JP13019684 U JP 13019684U JP S6143953 U JPS6143953 U JP S6143953U
Authority
JP
Japan
Prior art keywords
fuel ratio
air
internal combustion
control device
operating state
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
Application number
JP13019684U
Other languages
Japanese (ja)
Other versions
JPH0221564Y2 (en
Inventor
晃三郎 大川
規 永井
Original Assignee
日産自動車株式会社
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 日産自動車株式会社 filed Critical 日産自動車株式会社
Priority to JP13019684U priority Critical patent/JPS6143953U/en
Publication of JPS6143953U publication Critical patent/JPS6143953U/en
Application granted granted Critical
Publication of JPH0221564Y2 publication Critical patent/JPH0221564Y2/ja
Granted legal-status Critical Current

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  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本考案のクレーム対応図である。 第２図は本考案の実施例を示す概略構成図、第３図は同
じく要部の断面図、第４図は制御動作ルーチンを示すフ
ローチャート、第５図は作動特性図、第６図は空燃比と
機関安定限界の関係を示す説明図である。 第７図は運転状態と目標空燃比の関係を表す特性図、第
８図は空燃比の制御目標値とフィードバック制御域の関
係を示す説明図、第９区は従来の機関負荷とフィードバ
ック補正係数と実際に制御される空燃比の関係をあらわ
す特性図である。 １１・・・・・・運転状態検出手段、１２・・・・・・
排気空燃比検出手段、１３・・・・・・空燃比設定手段
、１４・・・・・・オープン制御手段、１５・・・・・
・フイー．ドバツク制御手段、１６・・・・・・運転域
判別手段、１７・・・・・・加速状態検出手段、１８・
・・・・・フィードバック制御一時停止手段。FIG. 1 is a diagram showing the claims of the present invention. Fig. 2 is a schematic configuration diagram showing an embodiment of the present invention, Fig. 3 is a sectional view of the main parts, Fig. 4 is a flowchart showing the control operation routine, Fig. 5 is an operational characteristic diagram, and Fig. 6 is an empty diagram. FIG. 3 is an explanatory diagram showing the relationship between fuel ratio and engine stability limit. Figure 7 is a characteristic diagram showing the relationship between the operating state and target air-fuel ratio, Figure 8 is an explanatory diagram showing the relationship between the air-fuel ratio control target value and the feedback control range, and the 9th section is the conventional engine load and feedback correction coefficient. FIG. 4 is a characteristic diagram showing the relationship between the air-fuel ratio and the actually controlled air-fuel ratio. 11... Operating state detection means, 12...
Exhaust air-fuel ratio detection means, 13... Air-fuel ratio setting means, 14... Open control means, 15...
・Fee. back control means, 16...driving range discrimination means, 17... acceleration state detection means, 18.
...Feedback control temporary stop means.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 運転状態を検出する手段と、排気空燃比を検出する手段
、運転状態に応じて目標空燃比を設定する手段と、所定
の空燃比が得られるように燃料供給量をオープン制御す
る手段と、排気空燃比検出手段の出力に応じて目標とす
る稀薄空燃比に燃料供給量をフィードバック制御する手
段と、運転状態に応じて空燃比をオープン制御する領域
とフィードバック制御する領域とに判別する手段と、機
関加速状態を検出する手段と、機関加速時にフィードバ
ック制御領域であっても加速初期に所定の期間だけライ
ードバック制御を一時的に停止させる手段とを備えるこ
とを特徴とする内燃機関の空燃比制御装置。means for detecting the operating state, means for detecting the exhaust air-fuel ratio, means for setting a target air-fuel ratio according to the operating state, means for controlling the fuel supply amount so as to obtain a predetermined air-fuel ratio, means for feedback controlling the fuel supply amount to a target lean air-fuel ratio according to the output of the air-fuel ratio detection means; means for determining the air-fuel ratio into an open control region and a feedback control region according to the operating state; An air-fuel ratio control device for an internal combustion engine, comprising means for detecting an engine acceleration state and means for temporarily stopping rideback control for a predetermined period at the beginning of acceleration even in a feedback control region during engine acceleration. .
JP13019684U 1984-08-28 1984-08-28 Air-fuel ratio control device for internal combustion engines Granted JPS6143953U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13019684U JPS6143953U (en) 1984-08-28 1984-08-28 Air-fuel ratio control device for internal combustion engines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13019684U JPS6143953U (en) 1984-08-28 1984-08-28 Air-fuel ratio control device for internal combustion engines

Publications (2)

Publication Number Publication Date
JPS6143953U true JPS6143953U (en) 1986-03-22
JPH0221564Y2 JPH0221564Y2 (en) 1990-06-11

Family

ID=30688812

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13019684U Granted JPS6143953U (en) 1984-08-28 1984-08-28 Air-fuel ratio control device for internal combustion engines

Country Status (1)

Country Link
JP (1) JPS6143953U (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51150311U (en) * 1975-05-28 1976-12-01
JPS5813131A (en) * 1981-07-15 1983-01-25 Nippon Denso Co Ltd Air-fuel ratio control method

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51150311U (en) * 1975-05-28 1976-12-01
JPS5813131A (en) * 1981-07-15 1983-01-25 Nippon Denso Co Ltd Air-fuel ratio control method

Also Published As

Publication number Publication date
JPH0221564Y2 (en) 1990-06-11

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