JPS541717A - Catalyst deterioration detector - Google Patents
Catalyst deterioration detectorInfo
- 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
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.
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)
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 |
-
1977
- 1977-06-07 JP JP6770677A patent/JPS541717A/en active Pending
Cited By (3)
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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