JPS58163622U - Internal combustion engine exhaust gas purification device - Google Patents

Internal combustion engine exhaust gas purification device

Info

Publication number
JPS58163622U
JPS58163622U JP6143982U JP6143982U JPS58163622U JP S58163622 U JPS58163622 U JP S58163622U JP 6143982 U JP6143982 U JP 6143982U JP 6143982 U JP6143982 U JP 6143982U JP S58163622 U JPS58163622 U JP S58163622U
Authority
JP
Japan
Prior art keywords
engine
secondary air
internal combustion
combustion engine
air introduction
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
JP6143982U
Other languages
Japanese (ja)
Other versions
JPS6139065Y2 (en
Inventor
英樹 前田
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 JP6143982U priority Critical patent/JPS58163622U/en
Publication of JPS58163622U publication Critical patent/JPS58163622U/en
Application granted granted Critical
Publication of JPS6139065Y2 publication Critical patent/JPS6139065Y2/ja
Granted legal-status Critical Current

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  • Exhaust Gas After Treatment (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図は従来装置の概略構成図、第２図は本考案の概略
構成図である。 １・・・機関本体、３・・・吸気マニホールド、４・・
・吸気絞弁、５・・・排気マニホールド、６・・・三元
触媒装置、７・・・排気管、８・・・二次空気導入路、
９・・・遮断弁、１０・・・リードバルブ、１２・・・
酸素センサ、１４・・・制御回路、１６・・・冷却水温
センサ、１９・・・点火コイル、２２・・・スロットル
スイッチ、２４・・・三方電磁弁、２７・・・ダイヤフ
ラム。FIG. 1 is a schematic configuration diagram of a conventional device, and FIG. 2 is a schematic configuration diagram of the present invention. 1... Engine body, 3... Intake manifold, 4...
- Intake throttle valve, 5... Exhaust manifold, 6... Three-way catalyst device, 7... Exhaust pipe, 8... Secondary air introduction path,
9...Shutoff valve, 10...Reed valve, 12...
Oxygen sensor, 14... Control circuit, 16... Cooling water temperature sensor, 19... Ignition coil, 22... Throttle switch, 24... Three-way solenoid valve, 27... Diaphragm.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 内燃機関の排気通路に設けた三元触媒装置と、この三元
触媒装置の上流排気通路に二次空気を導入する二次空気
導入装置と、同じく上流排気の酸素濃度を検出する酸素
センサと、機関の暖機状態を検出する冷却水温センサと
を設け、機関暖機後は二次空気導入装置の作動を停止し
て酸素センサの出力にもとづいて機関供給混合気を理論
空燃比にフィードバック制御し、暖機前はこのフィード
バック制御を解除して理論空燃比よりも濃い空燃比に制
御し、かつ、二次空気導入装置を作動させて三元触媒装
置を酸化触媒装置として使用した内燃機関の排気ガス浄
化装置において、機関の減速状態を検出する装置と、所
定回転数以上からの減速初期には暖機前であっても上記
二次空気導入装置の作動を停止する制御装置とを備えた
ことを特徴とする内燃機関の排気浄化装置。A three-way catalyst device provided in an exhaust passage of an internal combustion engine, a secondary air introduction device that introduces secondary air into the upstream exhaust passage of the three-way catalyst device, and an oxygen sensor that also detects the oxygen concentration of the upstream exhaust gas. A cooling water temperature sensor is installed to detect the warm-up state of the engine, and after the engine has warmed up, the operation of the secondary air introduction device is stopped and the air-fuel mixture supplied to the engine is feedback-controlled to the stoichiometric air-fuel ratio based on the output of the oxygen sensor. , This feedback control is canceled before warm-up to control the air-fuel ratio to be richer than the stoichiometric air-fuel ratio, and the secondary air introduction device is activated to use the three-way catalyst device as an oxidation catalyst device. The gas purification device is equipped with a device that detects the deceleration state of the engine, and a control device that stops the operation of the secondary air introduction device even before warming up at the initial stage of deceleration from a predetermined rotation speed or higher. An exhaust purification device for an internal combustion engine characterized by:
JP6143982U 1982-04-27 1982-04-27 Internal combustion engine exhaust gas purification device Granted JPS58163622U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6143982U JPS58163622U (en) 1982-04-27 1982-04-27 Internal combustion engine exhaust gas purification device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6143982U JPS58163622U (en) 1982-04-27 1982-04-27 Internal combustion engine exhaust gas purification device

Publications (2)

Publication Number Publication Date
JPS58163622U true JPS58163622U (en) 1983-10-31
JPS6139065Y2 JPS6139065Y2 (en) 1986-11-10

Family

ID=30071638

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6143982U Granted JPS58163622U (en) 1982-04-27 1982-04-27 Internal combustion engine exhaust gas purification device

Country Status (1)

Country Link
JP (1) JPS58163622U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6466448A (en) * 1987-09-07 1989-03-13 Toyota Motor Corp Air-fuel ratio control device of internal combustion engine
WO2022202463A1 (en) * 2021-03-25 2022-09-29 ヤンマーホールディングス株式会社 Engine system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6466448A (en) * 1987-09-07 1989-03-13 Toyota Motor Corp Air-fuel ratio control device of internal combustion engine
WO2022202463A1 (en) * 2021-03-25 2022-09-29 ヤンマーホールディングス株式会社 Engine system

Also Published As

Publication number Publication date
JPS6139065Y2 (en) 1986-11-10

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