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 regenerationInfo
- 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
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.
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 |
AU46631/99A AU4663199A (en) | 1998-05-27 | 1999-05-25 | Method and arrangement for sulphur oxide regeneration of an exhaust catalyst |
PCT/SE1999/000877 WO1999061763A1 (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)
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 |
WO2006080187A1 (en) * | 2005-01-31 | 2006-08-03 | Isuzu Motors Limited | Method of raising temperature of exhaust-gas purifier and exhaust-gas purification system |
Family Cites Families (4)
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 |
-
1998
- 1998-05-27 SE SE9801879A patent/SE514288C2/en not_active IP Right Cessation
-
1999
- 1999-05-25 WO PCT/SE1999/000877 patent/WO1999061763A1/en active Application Filing
- 1999-05-25 AU AU46631/99A patent/AU4663199A/en not_active Abandoned
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 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
NUG | Patent has lapsed |