JPS541717A - Catalyst deterioration detector - Google Patents

Catalyst deterioration detector

Info

Publication number
JPS541717A
JPS541717A JP6770677A JP6770677A JPS541717A JP S541717 A JPS541717 A JP S541717A JP 6770677 A JP6770677 A JP 6770677A JP 6770677 A JP6770677 A JP 6770677A JP S541717 A JPS541717 A JP S541717A
Authority
JP
Japan
Prior art keywords
catalyst deterioration
deterioration detector
catalyst
detector
deterioration
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
JP6770677A
Other languages
Japanese (ja)
Inventor
Mitsuhiko Ezoe
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.)
Nissan Motor Co Ltd
Original Assignee
Nissan Motor Co 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 Nissan Motor Co Ltd filed Critical Nissan Motor Co Ltd
Priority to JP6770677A priority Critical patent/JPS541717A/en
Publication of JPS541717A publication Critical patent/JPS541717A/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N11/00—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity
    • F01N11/002—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity the diagnostic devices measuring or estimating temperature or pressure in, or downstream of the exhaust apparatus
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2550/00—Monitoring or diagnosing the deterioration of exhaust systems
    • F01N2550/02—Catalytic activity of catalytic converters
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/40—Engine management systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Gas After Treatment (AREA)

Abstract

PURPOSE:A low-cost, high-presision catalyst deterioration detector which detects the deterioration of catalyst by temporarily changing the ignition operation or the secondary air feed rate, and measuring the rate of change of temperature of the exhaust gas passing through the converter.
JP6770677A 1977-06-07 1977-06-07 Catalyst deterioration detector Pending JPS541717A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6770677A JPS541717A (en) 1977-06-07 1977-06-07 Catalyst deterioration detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6770677A JPS541717A (en) 1977-06-07 1977-06-07 Catalyst deterioration detector

Publications (1)

Publication Number Publication Date
JPS541717A true JPS541717A (en) 1979-01-08

Family

ID=13352662

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6770677A Pending JPS541717A (en) 1977-06-07 1977-06-07 Catalyst deterioration detector

Country Status (1)

Country Link
JP (1) JPS541717A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1071964C (en) * 1995-08-16 2001-09-26 三菱电机株式会社 QPSK demodulator for obtg. phase by arithmetic operation
JP2003519323A (en) * 1999-12-31 2003-06-17 ロベルト・ボッシュ・ゲゼルシャフト・ミト・ベシュレンクテル・ハフツング Especially the operation method of the internal combustion engine of the automobile

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1071964C (en) * 1995-08-16 2001-09-26 三菱电机株式会社 QPSK demodulator for obtg. phase by arithmetic operation
JP2003519323A (en) * 1999-12-31 2003-06-17 ロベルト・ボッシュ・ゲゼルシャフト・ミト・ベシュレンクテル・ハフツング Especially the operation method of the internal combustion engine of the automobile
JP4938950B2 (en) * 1999-12-31 2012-05-23 ロベルト・ボッシュ・ゲゼルシャフト・ミト・ベシュレンクテル・ハフツング In particular, a method for operating an internal combustion engine of an automobile

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