JPS58151325U - Engine air-fuel ratio sensor - protection device - Google Patents

Engine air-fuel ratio sensor - protection device

Info

Publication number
JPS58151325U
JPS58151325U JP4957382U JP4957382U JPS58151325U JP S58151325 U JPS58151325 U JP S58151325U JP 4957382 U JP4957382 U JP 4957382U JP 4957382 U JP4957382 U JP 4957382U JP S58151325 U JPS58151325 U JP S58151325U
Authority
JP
Japan
Prior art keywords
fuel ratio
ratio sensor
air
small chamber
protection device
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
Application number
JP4957382U
Other languages
Japanese (ja)
Inventor
山本　多美子
Original Assignee
マツダ株式会社
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 マツダ株式会社 filed Critical マツダ株式会社
Priority to JP4957382U priority Critical patent/JPS58151325U/en
Publication of JPS58151325U publication Critical patent/JPS58151325U/en
Pending 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 the drawing]

第１図は本考案実施例に係る空燃比センサー保護装置を
有するエンジンの給排気系統図、第２図は第１図の■部
拡大図、第３図は本考案の他の実施例に係る空燃比セン
サー保護装置における空燃比センサー取付部の拡大図で
ある。 ３・・・・・・排気通路、４・・・・・・排気管、４ａ
・・・・・・排気管の側壁、５・・・・・・燃料供給装
置、９・・・・・・空燃比センサー、９ａ・・・・・・
空燃比センサーの検出部、１１・・・・・・２次空気供
給装置、１６・・・・・・小孔、１７・・・・・・小室
、１８・・・・・・カバ一部材、１８ａ・・・・・・カ
バ一部材の外壁部。Fig. 1 is an air supply and exhaust system diagram of an engine having an air-fuel ratio sensor protection device according to an embodiment of the present invention, Fig. 2 is an enlarged view of the part ■ in Fig. 1, and Fig. 3 is a diagram of another embodiment of the present invention. FIG. 3 is an enlarged view of an air-fuel ratio sensor mounting portion in the air-fuel ratio sensor protection device. 3...Exhaust passage, 4...Exhaust pipe, 4a
...Exhaust pipe side wall, 5...Fuel supply device, 9...Air-fuel ratio sensor, 9a...
Detection section of air-fuel ratio sensor, 11...Secondary air supply device, 16...Small hole, 17...Small chamber, 18...Cover member, 18a...Outer wall portion of the cover member.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 排気通路に介設した空燃比センサーと、該空燃比センサ
ーの出力でもって燃料供給量を制御する燃料供給装置と
、上記空燃比センサーの近傍に２次空気を供給する２次
空気供給装置とを備えたエンジンにおいて、上記排気通
路を構成する排気マニホールド又は排気管の側壁に小孔
を介して上記排気通路と連通ずる小室を形成し、該小室
を形成する外壁部に検出部を小室内に臨ませて空燃比セ
ンサーを取付け、該小室に２次空気を供給するように構
成したことを特徴とするエンジンの空燃比センサー保護
装置。An air-fuel ratio sensor installed in the exhaust passage, a fuel supply device that controls the amount of fuel supplied by the output of the air-fuel ratio sensor, and a secondary air supply device that supplies secondary air near the air-fuel ratio sensor. In the engine equipped with the above-mentioned engine, a small chamber communicating with the exhaust passage through a small hole is formed in the side wall of the exhaust manifold or exhaust pipe constituting the exhaust passage, and a detection unit is provided on the outer wall forming the small chamber so as to face the small chamber. 1. An air-fuel ratio sensor protection device for an engine, characterized in that an air-fuel ratio sensor is attached to the small chamber, and secondary air is supplied to the small chamber.
JP4957382U 1982-04-05 1982-04-05 Engine air-fuel ratio sensor - protection device Pending JPS58151325U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4957382U JPS58151325U (en) 1982-04-05 1982-04-05 Engine air-fuel ratio sensor - protection device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4957382U JPS58151325U (en) 1982-04-05 1982-04-05 Engine air-fuel ratio sensor - protection device

Publications (1)

Publication Number Publication Date
JPS58151325U true JPS58151325U (en) 1983-10-11

Family

ID=30060418

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4957382U Pending JPS58151325U (en) 1982-04-05 1982-04-05 Engine air-fuel ratio sensor - protection device

Country Status (1)

Country Link
JP (1) JPS58151325U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6396218U (en) * 1986-12-15 1988-06-21

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5332236A (en) * 1976-09-08 1978-03-27 Nissan Motor Co Ltd Exhaust gas control means for automotive internal combustion engine
JPS5698544A (en) * 1980-01-09 1981-08-08 Mazda Motor Corp Air fuel ratio controller of engine

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5332236A (en) * 1976-09-08 1978-03-27 Nissan Motor Co Ltd Exhaust gas control means for automotive internal combustion engine
JPS5698544A (en) * 1980-01-09 1981-08-08 Mazda Motor Corp Air fuel ratio controller of engine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6396218U (en) * 1986-12-15 1988-06-21

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