JPS5257421A - Diagnosis equipment for secondary air supply equipment - Google Patents

Diagnosis equipment for secondary air supply equipment

Info

Publication number
JPS5257421A
JPS5257421A JP13295975A JP13295975A JPS5257421A JP S5257421 A JPS5257421 A JP S5257421A JP 13295975 A JP13295975 A JP 13295975A JP 13295975 A JP13295975 A JP 13295975A JP S5257421 A JPS5257421 A JP S5257421A
Authority
JP
Japan
Prior art keywords
equipment
air supply
secondary air
diagnosis
supply equipment
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
JP13295975A
Other languages
Japanese (ja)
Inventor
Naoya Seki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP13295975A priority Critical patent/JPS5257421A/en
Publication of JPS5257421A publication Critical patent/JPS5257421A/en
Pending legal-status Critical Current

Links

Landscapes

  • Exhaust Gas After Treatment (AREA)

Abstract

PURPOSE: To carry out automatically diagnosis for the secondary air supply equipment, measuring discharge pressure of air pump at the opening and closing of the secondary air supply control valve.
COPYRIGHT: (C)1977,JPO&Japio
JP13295975A 1975-11-07 1975-11-07 Diagnosis equipment for secondary air supply equipment Pending JPS5257421A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13295975A JPS5257421A (en) 1975-11-07 1975-11-07 Diagnosis equipment for secondary air supply equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13295975A JPS5257421A (en) 1975-11-07 1975-11-07 Diagnosis equipment for secondary air supply equipment

Publications (1)

Publication Number Publication Date
JPS5257421A true JPS5257421A (en) 1977-05-11

Family

ID=15093488

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13295975A Pending JPS5257421A (en) 1975-11-07 1975-11-07 Diagnosis equipment for secondary air supply equipment

Country Status (1)

Country Link
JP (1) JPS5257421A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01216011A (en) * 1988-02-23 1989-08-30 Nissan Motor Co Ltd Secondary air introducing device for internal combustion engine
JPH0357811A (en) * 1989-07-26 1991-03-13 Nissan Motor Co Ltd Exhaust gas clarification system diagnostic device of internal combustion engine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01216011A (en) * 1988-02-23 1989-08-30 Nissan Motor Co Ltd Secondary air introducing device for internal combustion engine
JPH0357811A (en) * 1989-07-26 1991-03-13 Nissan Motor Co Ltd Exhaust gas clarification system diagnostic device of internal combustion engine

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