JPS6243119U - - Google Patents

Info

Publication number
JPS6243119U
JPS6243119U JP13503485U JP13503485U JPS6243119U JP S6243119 U JPS6243119 U JP S6243119U JP 13503485 U JP13503485 U JP 13503485U JP 13503485 U JP13503485 U JP 13503485U JP S6243119 U JPS6243119 U JP S6243119U
Authority
JP
Japan
Prior art keywords
secondary air
passage
control valve
air supply
combustion engine
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
JP13503485U
Other languages
Japanese (ja)
Other versions
JPH0422026Y2 (en
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 filed Critical
Priority to JP1985135034U priority Critical patent/JPH0422026Y2/ja
Publication of JPS6243119U publication Critical patent/JPS6243119U/ja
Application granted granted Critical
Publication of JPH0422026Y2 publication Critical patent/JPH0422026Y2/ja
Expired legal-status Critical Current

Links

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  • Exhaust Gas After Treatment (AREA)

Description

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

第１図は本考案の実施例１の概略図であり、第
２図は本考案の実施例２の概略図である。 １……内燃機関本体、２……吸気通路、３……
排気通路、５……スロツトルバルブ、６……機械
式過給機、１３……三元触媒、１４……酸化触媒
、２０……電子式制御装置（ＥＣＰ）、２１……
バイパス通路、２２……過給圧制御弁、３０……
二次空気供給通路、３１……二次空気制御弁（第
１制御弁）、４０……分岐通路、４１……二次空
気切換制御弁（第２制御弁）。 FIG. 1 is a schematic diagram of Embodiment 1 of the present invention, and FIG. 2 is a schematic diagram of Embodiment 2 of the present invention. 1...Internal combustion engine body, 2...Intake passage, 3...
Exhaust passage, 5... Throttle valve, 6... Mechanical supercharger, 13... Three-way catalyst, 14... Oxidation catalyst, 20... Electronic control unit (ECP), 21...
Bypass passage, 22...Supercharging pressure control valve, 30...
Secondary air supply passage, 31... Secondary air control valve (first control valve), 40... Branch passage, 41... Secondary air switching control valve (second control valve).

Claims (1)

【実用新案登録請求の範囲】 １ 吸気通路に機械式過給機を備え、排気通路に
酸化触媒と該酸化触媒の上流に三元触媒とを設け
た内燃機関において、前記過給機の下流の吸気通
路から前記三元触媒と前記酸化触媒との間の排気
通路へ二次空気を供給する二次空気供給通路を設
け、該二次空気供給通路に内燃機関の一部の運転
条件で閉成する第１制御弁を設けるとともに該第
１制御弁の下流より分岐する通路を三元触媒上流
の排気ポートに接続し、前記分岐部に内燃機関の
冷間時のみ二次空気を前記排気ポートへ供給する
べく切り換える第２制御弁を設けたことを特徴と
する機械式過給機付内燃機関の二次空気供給装置
。 ２ 前記二次空気供給通路の第１制御弁と第２制
御弁との間を、二次空気供給通路側へのみ空気を
導入する逆止弁を介して大気ほに連通させた実用
新案登録請求の範囲第１項記載の装置。[Claims for Utility Model Registration] 1. In an internal combustion engine equipped with a mechanical supercharger in the intake passage, an oxidation catalyst in the exhaust passage, and a three-way catalyst upstream of the oxidation catalyst, A secondary air supply passage is provided for supplying secondary air from the intake passage to the exhaust passage between the three-way catalyst and the oxidation catalyst, and the secondary air supply passage is closed under some operating conditions of the internal combustion engine. A first control valve is provided, and a passage branching from the downstream side of the first control valve is connected to an exhaust port upstream of the three-way catalyst, and secondary air is supplied to the exhaust port through the branch part only when the internal combustion engine is cold. A secondary air supply device for an internal combustion engine with a mechanical supercharger, characterized in that a second control valve is provided for switching to supply secondary air. 2. Request for utility model registration in which the first control valve and second control valve of the secondary air supply passage are communicated with the atmosphere via a check valve that introduces air only to the secondary air supply passage side. The device according to item 1.
JP1985135034U 1985-09-05 1985-09-05 Expired JPH0422026Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1985135034U JPH0422026Y2 (en) 1985-09-05 1985-09-05

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1985135034U JPH0422026Y2 (en) 1985-09-05 1985-09-05

Publications (2)

Publication Number Publication Date
JPS6243119U true JPS6243119U (en) 1987-03-16
JPH0422026Y2 JPH0422026Y2 (en) 1992-05-20

Family

ID=31036832

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1985135034U Expired JPH0422026Y2 (en) 1985-09-05 1985-09-05

Country Status (1)

Country Link
JP (1) JPH0422026Y2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004097190A1 (en) * 2003-05-01 2004-11-11 Yamaha Hatsudoki Kabushiki Kaisha Engine

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5131936U (en) * 1974-08-26 1976-03-09
JPS5290723A (en) * 1976-01-26 1977-07-30 Mazda Motor Corp Exhaust emission control device for engine
JPS5423820A (en) * 1977-07-23 1979-02-22 Toyota Motor Corp Internal combustion engine secondary air regulator

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5131936U (en) * 1974-08-26 1976-03-09
JPS5290723A (en) * 1976-01-26 1977-07-30 Mazda Motor Corp Exhaust emission control device for engine
JPS5423820A (en) * 1977-07-23 1979-02-22 Toyota Motor Corp Internal combustion engine secondary air regulator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004097190A1 (en) * 2003-05-01 2004-11-11 Yamaha Hatsudoki Kabushiki Kaisha Engine

Also Published As

Publication number Publication date
JPH0422026Y2 (en) 1992-05-20

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