SE9801879L - Process for sulfur regeneration of exhaust catalyst and arrangement for such sulfur regeneration - Google Patents

Process for sulfur regeneration of exhaust catalyst and arrangement for such sulfur regeneration

Info

Publication number
SE9801879L
SE9801879L SE9801879A SE9801879A SE9801879L SE 9801879 L SE9801879 L SE 9801879L SE 9801879 A SE9801879 A SE 9801879A SE 9801879 A SE9801879 A SE 9801879A SE 9801879 L SE9801879 L SE 9801879L
Authority
SE
Sweden
Prior art keywords
exhaust catalyst
exhaust
catalyst
regeneration
sulphur
Prior art date
Application number
SE9801879A
Other languages
Swedish (sv)
Other versions
SE9801879D0 (en
SE514288C2 (en
Inventor
Martin Litorell
Original Assignee
Volvo Ab
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 Volvo Ab filed Critical Volvo Ab
Priority to SE9801879A priority Critical patent/SE514288C2/en
Publication of SE9801879D0 publication Critical patent/SE9801879D0/en
Priority to PCT/SE1999/000877 priority patent/WO1999061763A1/en
Priority to AU46631/99A priority patent/AU4663199A/en
Publication of SE9801879L publication Critical patent/SE9801879L/en
Publication of SE514288C2 publication Critical patent/SE514288C2/en

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
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/0807—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents
    • F01N3/0828—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents characterised by the absorbed or adsorbed substances
    • F01N3/0842—Nitrogen oxides
    • 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
    • B01D53/9404—Removing only nitrogen compounds
    • B01D53/9409—Nitrogen oxides
    • B01D53/9431—Processes 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
    • 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
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/009—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more separate purifying devices arranged in series
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/021—Introducing corrections for particular conditions exterior to the engine
    • F02D41/0235—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus
    • F02D41/024—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus to increase temperature of the exhaust gas treating apparatus
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/021—Introducing corrections for particular conditions exterior to the engine
    • F02D41/0235—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus
    • F02D41/027—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus to purge or regenerate the exhaust gas treating apparatus
    • F02D41/0275—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus to purge or regenerate the exhaust gas treating apparatus the exhaust gas treating apparatus being a NOx trap or adsorbent
    • F02D41/028—Desulfurisation of NOx traps or adsorbent
    • 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
    • F01N2570/00—Exhaust treating apparatus eliminating, absorbing or adsorbing specific elements or compounds
    • F01N2570/04—Sulfur or sulfur oxides
    • 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
    • F01N2570/00—Exhaust treating apparatus eliminating, absorbing or adsorbing specific elements or compounds
    • F01N2570/16—Oxygen
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/14—Introducing closed-loop corrections
    • F02D41/1401—Introducing closed-loop corrections characterised by the control or regulation method
    • F02D41/1408—Dithering techniques
    • 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

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Health & Medical Sciences (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

The invention relates to a method for sulphur regeneration of a NOx adsorbing exhaust catalyst (18) by means of raising of its temperature, wherein the exhaust catalyst (18) is installed in an exhaust system (16, 17) which is connected to a combustion engine (1), which method comprises generation of an air/fuel mixture to the respective cylinder (3) of the engine (1). The invention is characterized in that it comprises alternating control of the combustion engine (1) between a first condition during which a comparatively rich exhaust gas mixture is supplied to the exhaust catalyst (18), wherein oxygen that is stored in the exhaust catalyst (18) is consumed at least partly during combustion of combustible compounds in the exhaust system (16, 17), for generation of heat, and a second condition during which a comparatively lean exhaust gas mixture is supplied to the exhaust catalyst (18), for storage of oxygen to said exhaust catalyst (18), and closure of said alternating control following the desorption of a predetermined amount of sulphur compounds from said exhaust catalyst (18). The invention also relates to an arrangement for such a sulphur regeneration. By means of the invention, an improved sulphur regeneration of a NOx adsorbing exhaust catalyst (18) in a motor vehicle is provided.
SE9801879A 1998-05-27 1998-05-27 Apparatus and process for sulfur regeneration of NOx adsorbent catalyst SE514288C2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
SE9801879A SE514288C2 (en) 1998-05-27 1998-05-27 Apparatus and process for sulfur regeneration of NOx adsorbent catalyst
PCT/SE1999/000877 WO1999061763A1 (en) 1998-05-27 1999-05-25 Method and arrangement for sulphur oxide regeneration of an exhaust catalyst
AU46631/99A AU4663199A (en) 1998-05-27 1999-05-25 Method and arrangement for sulphur oxide regeneration of an exhaust catalyst

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9801879A SE514288C2 (en) 1998-05-27 1998-05-27 Apparatus and process for sulfur regeneration of NOx adsorbent catalyst

Publications (3)

Publication Number Publication Date
SE9801879D0 SE9801879D0 (en) 1998-05-27
SE9801879L true SE9801879L (en) 1999-11-28
SE514288C2 SE514288C2 (en) 2001-02-05

Family

ID=20411485

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9801879A SE514288C2 (en) 1998-05-27 1998-05-27 Apparatus and process for sulfur regeneration of NOx adsorbent catalyst

Country Status (3)

Country Link
AU (1) AU4663199A (en)
SE (1) SE514288C2 (en)
WO (1) WO1999061763A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19961165A1 (en) 1999-12-17 2001-08-02 Volkswagen Ag Process for the desulfurization of a NO¶x¶ storage catalytic converter arranged in an exhaust gas duct of an internal combustion engine
DE10043098A1 (en) * 2000-09-01 2002-07-11 Volkswagen Ag Process for NOx regeneration of a NOx storage catalytic converter
EP1857647A4 (en) * 2005-01-31 2015-03-25 Isuzu Motors Ltd Method of raising temperature of exhaust-gas purifier and exhaust-gas purification system

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2605586B2 (en) * 1992-07-24 1997-04-30 トヨタ自動車株式会社 Exhaust gas purification device for internal combustion engine
JP2727906B2 (en) * 1993-03-19 1998-03-18 トヨタ自動車株式会社 Exhaust gas purification device for internal combustion engine
GB9626290D0 (en) * 1996-12-18 1997-02-05 Ford Motor Co Method of de-sulphurating engine exhaust NOx traps
US5974788A (en) * 1997-08-29 1999-11-02 Ford Global Technologies, Inc. Method and apparatus for desulfating a nox trap

Also Published As

Publication number Publication date
WO1999061763A1 (en) 1999-12-02
SE9801879D0 (en) 1998-05-27
AU4663199A (en) 1999-12-13
SE514288C2 (en) 2001-02-05

Similar Documents

Publication Publication Date Title
JP3209516B2 (en) Internal combustion engine device including nitrogen oxide storage catalyst and method of operating the same
US6170259B1 (en) Emission control system for an internal-combustion engine
US6318073B1 (en) Process and system for purifying exhaust gases of an internal-combustion engine
BR9714635A (en) Process to control the emission of harmful materials in the exhaust gases of an internal combustion engine and purification system
JP2951831B2 (en) Exhaust gas purification device for internal combustion engine
JPH08226345A (en) Reducing method of noxious material in exhaust gas in internal combustion engine with large number of cylinder
US6843052B2 (en) Exhaust emission control system having a nitrogen oxide adsorber and method for desulfating the nitrogen oxide adsorber
WO1998027322A1 (en) METHOD OF DE-SULPHURATING ENGINE EXHAUST NOx TRAPS
KR950033013A (en) Fuel dispersion control method and apparatus equipped with NOx catalyst
JPH084522A (en) Device and method for exhaust emission control of internal combustion engine
MX9307424A (en) EXHAUST GAS PURIFICATION SYSTEM FOR THE DECREASE OF THE EMISSION OF HYDROCARBONS DURING THE COLD START OF INTERNAL COMBUSTION ENGINE MACHINES.
CA2169727A1 (en) Control of secondary air to an electrically heated catalyst using feedback control
ES2156448T3 (en) PROCEDURE FOR THE RECOGNITION OF ANOMALIES IN AN INTERNAL COMBUSTION ENGINE AND IN THE POST-TREATMENT SYSTEM OF EXHAUST GASES THROUGH THE MEASUREMENT OF CONTAMINANT COMPONENTS CONTAINED IN THE EXHAUST GASES DURING THE COLD STARTING AND DURING MARCH.
US6872365B1 (en) Exhaust gas cleaning system having internal ammonia production for reducing nitrogen oxides
SE9800952L (en) Method and device for control of internal combustion engine
EP0731266A1 (en) Controlling exhaust emission from an internal combustion engine
US7204082B1 (en) System for combustion of reformate in an engine exhaust stream
JP2004517247A (en) NOx trap desulfurization method for diesel exhaust system
SE9801879D0 (en) Process for sulfur regeneration of exhaust catalyst and arrangement for such sulfur regeneration
KR100440757B1 (en) Plasma exhaust gas treatment apparatus
KR20180029678A (en) Exhaust gas purification device of vehicle and control method thereof
RU2402684C2 (en) Method of regenerating nitrogen oxide catalytic neutralisers-accumulators
US5910293A (en) Exhaust management system control
JP2827671B2 (en) Evaporative gas purifier for lean-burn internal combustion engines
JP2734907B2 (en) Exhaust gas purification device

Legal Events

Date Code Title Description
NUG Patent has lapsed