GB1373826A - Motor vehicle exhaust system including a catalytic converter - Google Patents

Motor vehicle exhaust system including a catalytic converter

Info

Publication number
GB1373826A
GB1373826A GB10572A GB10572A GB1373826A GB 1373826 A GB1373826 A GB 1373826A GB 10572 A GB10572 A GB 10572A GB 10572 A GB10572 A GB 10572A GB 1373826 A GB1373826 A GB 1373826A
Authority
GB
United Kingdom
Prior art keywords
motor vehicle
catalytic converter
catalyst
vehicle exhaust
thermocouple
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.)
Expired
Application number
GB10572A
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
Publication of GB1373826A publication Critical patent/GB1373826A/en
Expired 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)
  • Investigating Or Analyzing Materials Using Thermal Means (AREA)
  • Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
  • Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)

Abstract

1373826 Purifying exhaust gases NISSAN MOTOR CO Ltd 3 Jan 1972 [9 Aug 1971] 105/72 Heading F1B To detect deterioration of the catalyst, e.g. oxidation catalyst, in a catalytic converter for treating motor vehicle exhaust gases a thermocouple 18 has junctions 16a, 16b formed by two wires 20a, 20b, e.g. chromel and alumel or iron and constantan, respectively, positioned within the converter inlet 12a and outlet 12b. An ammeter 26 or a relay with a coil connected in series with a diode and having contacts in an indicator lamp circuit is connected to the wire 20b to indicate the E. M. F. of the thermocouple or energize the lamp when the E. M. F. exceeds a certain value. The E. M. F. is a function of the temperature difference across the reactor which is positive when the catalyst is fully active and negative when inactive. The junctions 16a, 16b may be located in a stainless-steel tube packed with an insulating material.
GB10572A 1971-08-09 1972-01-03 Motor vehicle exhaust system including a catalytic converter Expired GB1373826A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1971071096U JPS4828492U (en) 1971-08-09 1971-08-09

Publications (1)

Publication Number Publication Date
GB1373826A true GB1373826A (en) 1974-11-13

Family

ID=13450649

Family Applications (1)

Application Number Title Priority Date Filing Date
GB10572A Expired GB1373826A (en) 1971-08-09 1972-01-03 Motor vehicle exhaust system including a catalytic converter

Country Status (2)

Country Link
JP (1) JPS4828492U (en)
GB (1) GB1373826A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993020340A2 (en) * 1992-04-03 1993-10-14 Robert Bosch Gmbh Methods and device for assessing the operatability of a catalytic converter
WO1994004800A1 (en) * 1992-08-17 1994-03-03 Emitec Gesellschaft Für Emissionstechnologie Mbh Process for monitoring the operation of a catalytic converter
WO1994021901A1 (en) * 1993-03-19 1994-09-29 Siemens Aktiengesellschaft Process for checking the conversion capability of a catalyst
WO1994021902A1 (en) * 1993-03-18 1994-09-29 Emitec Gesellschaft Für Emissionstechnologie Mbh Process and device for monitoring the operation of a catalytic converter

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993020340A2 (en) * 1992-04-03 1993-10-14 Robert Bosch Gmbh Methods and device for assessing the operatability of a catalytic converter
WO1993020340A3 (en) * 1992-04-03 1994-01-06 Bosch Gmbh Robert Methods and device for assessing the operatability of a catalytic converter
US5675967A (en) * 1992-04-03 1997-10-14 Robert Bosch Gmbh Method and arrangement for evaluating the operability of a catalytic converter
WO1994004800A1 (en) * 1992-08-17 1994-03-03 Emitec Gesellschaft Für Emissionstechnologie Mbh Process for monitoring the operation of a catalytic converter
US5610844A (en) * 1992-08-17 1997-03-11 Emitec Gesellschaft Fuer Emissionstechnologie Method of monitoring the operation of a catalytic converter
WO1994021902A1 (en) * 1993-03-18 1994-09-29 Emitec Gesellschaft Für Emissionstechnologie Mbh Process and device for monitoring the operation of a catalytic converter
US5560200A (en) * 1993-03-18 1996-10-01 Emitec Gesellschaft Fuer Emissionstechnologie Mbh Method and apparatus for functional monitoring of a catalytic converter
WO1994021901A1 (en) * 1993-03-19 1994-09-29 Siemens Aktiengesellschaft Process for checking the conversion capability of a catalyst
US5647205A (en) * 1993-03-19 1997-07-15 Siemens Aktiengesellschaft Process for checking the conversion capability of a catalyst

Also Published As

Publication number Publication date
JPS4828492U (en) 1973-04-07

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Legal Events

Date Code Title Description
PS Patent sealed
746 Register noted 'licences of right' (sect. 46/1977)