GB1493398A - Internal combustion engine having an exhaust gas catalytic converter system - Google Patents

Internal combustion engine having an exhaust gas catalytic converter system

Info

Publication number
GB1493398A
GB1493398A GB49462/74A GB4946274A GB1493398A GB 1493398 A GB1493398 A GB 1493398A GB 49462/74 A GB49462/74 A GB 49462/74A GB 4946274 A GB4946274 A GB 4946274A GB 1493398 A GB1493398 A GB 1493398A
Authority
GB
United Kingdom
Prior art keywords
exhaust gas
conduit
air
pump
engine
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
GB49462/74A
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 GB49462/74A priority Critical patent/GB1493398A/en
Publication of GB1493398A publication Critical patent/GB1493398A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
    • B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
    • B01D53/9445—Simultaneously removing carbon monoxide, hydrocarbons or nitrogen oxides making use of three-way catalysts [TWC] or four-way-catalysts [FWC]
    • B01D53/9454—Simultaneously removing carbon monoxide, hydrocarbons or nitrogen oxides making use of three-way catalysts [TWC] or four-way-catalysts [FWC] characterised by a specific device
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
    • B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
    • B01D53/9495—Controlling the catalytic process
    • 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
    • Y02T10/12—Improving ICE efficiencies

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Exhaust Gas After Treatment (AREA)

Abstract

1493398 Catalytic treatment of I.C. exhaust gases NISSAN MOTOR CO Ltd 15 Nov 1974 49462/74 Headings BIF and B1W An I.C. engine comprises an exhaust gas conduit 16 containing in series an oxidation catalyst section 26 for reducing the oxygen content in the exhaust gas fed to it, possibly to zero, by oxidation of hydrocarbon and carbon monoxide in the gas, a reducing catalyst section 22 to reduce nitrogen oxides in the exhaust gas, another oxidation catalyst section 24 to oxidise hydrocarbons and carbon monoxide, and secondary air supply means for feeding secondary air e.g. via conduit 60 into conduit 16 upstream of catalyst 26. In operation, engine temperature controlled switches 52 and 70 and control valves 30 and 56 operate so that, at normal operating conditions, air from pump 28 passes via metering orifice 46 to mix with exhaust gas from engine 12. During cold engine operation rather more air from pump 28 passes via larger metering orifice 48 to mix with the exhaust gas. When decelerating, air from pump 28 is discharged to the atmosphere or returned to conduit 37 via 62.
GB49462/74A 1974-11-15 1974-11-15 Internal combustion engine having an exhaust gas catalytic converter system Expired GB1493398A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB49462/74A GB1493398A (en) 1974-11-15 1974-11-15 Internal combustion engine having an exhaust gas catalytic converter system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB49462/74A GB1493398A (en) 1974-11-15 1974-11-15 Internal combustion engine having an exhaust gas catalytic converter system

Publications (1)

Publication Number Publication Date
GB1493398A true GB1493398A (en) 1977-11-30

Family

ID=10452422

Family Applications (1)

Application Number Title Priority Date Filing Date
GB49462/74A Expired GB1493398A (en) 1974-11-15 1974-11-15 Internal combustion engine having an exhaust gas catalytic converter system

Country Status (1)

Country Link
GB (1) GB1493398A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0438603A1 (en) * 1989-08-11 1991-07-31 Sakai Chemical Industry Co., Ltd., Method of treating exhaust gas
DE4204603A1 (en) * 1992-02-15 1993-08-19 Kat Tec Ges Fuer Katalysatorte Appts. for multistage catalytic combustion of nitrogen cpds. - in gas e.g. ammonia, stripped from water percolating from refuse tip, without emission of e.g. dioxin or excess nitrogen oxide

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0438603A1 (en) * 1989-08-11 1991-07-31 Sakai Chemical Industry Co., Ltd., Method of treating exhaust gas
EP0438603A4 (en) * 1989-08-11 1992-05-13 Sakai Chemical Industry Co., Ltd., Method of treating exhaust gas
US5180567A (en) * 1989-08-11 1993-01-19 Sakai Chemical Industry Co., Ltd. Exhaust gas treating method
DE4204603A1 (en) * 1992-02-15 1993-08-19 Kat Tec Ges Fuer Katalysatorte Appts. for multistage catalytic combustion of nitrogen cpds. - in gas e.g. ammonia, stripped from water percolating from refuse tip, without emission of e.g. dioxin or excess nitrogen oxide

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Legal Events

Date Code Title Description
PS Patent sealed
746 Register noted 'licences of right' (sect. 46/1977)
PCNP Patent ceased through non-payment of renewal fee