WO2003050399A1 - Verfahren zur nachbehandlung von abgasen von brennkraftmaschinen und einrichtung hierfür - Google Patents
Verfahren zur nachbehandlung von abgasen von brennkraftmaschinen und einrichtung hierfür Download PDFInfo
- Publication number
- WO2003050399A1 WO2003050399A1 PCT/DE2002/004286 DE0204286W WO03050399A1 WO 2003050399 A1 WO2003050399 A1 WO 2003050399A1 DE 0204286 W DE0204286 W DE 0204286W WO 03050399 A1 WO03050399 A1 WO 03050399A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- exhaust gases
- reducing agent
- internal combustion
- fuel
- aftertreatment
- 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
- F01N3/0892—Electric or magnetic treatment, e.g. dissociation of noxious components
-
- 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
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
- F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
- F01N3/2066—Selective catalytic reduction [SCR]
-
- 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
- F01N2240/00—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being
- F01N2240/28—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being a plasma reactor
-
- 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
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/02—Adding substances to exhaust gases the substance being ammonia or urea
-
- 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
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/03—Adding substances to exhaust gases the substance being hydrocarbons, e.g. engine fuel
-
- 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
Definitions
- the invention relates to a method for the aftertreatment of exhaust gases from internal combustion engines, in particular for reducing the NO x content of the exhaust gases, the NO being reduced in the presence of 0 2 and a reducing agent.
- Such methods are known under the name SCR (Selective Catalytic Reduction) technology.
- the object of the present invention is to improve the known SCR technology in such a way that a further reduction in the NO. Fraction in the exhaust gases is achieved.
- This object is achieved by an aforementioned method that the fact indicates that, is converted before the reduction of NO x in the presence of O, with a reducing agent at least a part of the present in the exhaust N0 X or NO to NO.
- the method according to the invention is based on the finding that when using reducing agents which do not have a high selectivity, the SCR technology primarily reduces NO 2 while NO does not, or only slightly being affected.
- the exhaust gases are therefore preconditioned prior to the reduction by means of SCR technology in such a way that the largest possible proportion of NO ,, or from NO to NO, is converted.
- the proportion of NO in the exhaust gases is consequently lower and the proportion of N0 2 is correspondingly higher. Since NO is preferably converted in the subsequent reduction, the total NO. Fraction in the exhaust gases is reduced due to the previous conversion from NO to NO.
- fuel is used as the reducing agent.
- the use of fuel has the advantage that fuel is present in the vehicle to supply the internal combustion engine. Despite the relatively low selectivity of the fuel as a reducing agent, it can be reduced with the SCR technology due to the high NO, content of the exhaust gases due to the conversion according to the invention.
- ammonia has a high selectivity, which is why a relatively high proportion of NO x is reduced in SCR technology.
- ammonia can be obtained in the vehicle on a hydrolysis catalytic converter from non-toxic urea water solution.
- the invention also relates to a device for the aftertreatment of exhaust gases from internal combustion engines, in particular for carrying out the method according to the invention, with an exhaust system which has an SCR catalytic converter and an introductory device upstream of the SCR catalytic converter for introducing reducing agent into the exhaust system.
- an exhaust system which has an SCR catalytic converter and an introductory device upstream of the SCR catalytic converter for introducing reducing agent into the exhaust system.
- the task is upstream of the insertion device an oxidation catalyst.
- the oxidation catalytic converter converts NO : ⁇ or NO to NO, before the exhaust gases are fed to the SCR catalytic converter.
- This has the advantage that reducing agents with low selectivity, such as in particular fuel, can also be used for the aftertreatment of the exhaust gases, and in particular for reducing the NO. Fraction of the exhaust gases.
- the figure shows an exhaust line 10 in which exhaust gases A coming from an internal combustion engine are first fed to an oxidation catalytic converter 12.
- the oxidation catalytic converter 12 has the task of converting NO present in the exhaust gas A to NO.
- the oxidation catalytic converter 12 is followed by an introducer 14, which introduces reducing agents in the form of, for example, fuel K into the exhaust line 10.
- the introduction device 14 is followed by an SCR catalytic converter 16, which reduces NO. With the reducing agent K in the presence of 0.
- the main advantage of using fuel is that there is fuel in the vehicle.
- Another reducing agent, such as ammonia has to be refueled as an additional fuel.
- fuel as a reducing agent in the SCR catalytic converter 16 generally has a low selectivity, it has been shown that fuel preferably reduces NO.
- the overall NO, content is significantly reduced because of the high N0 2 content.
- the oxidation catalytic converter 12 oxidizes all NO to NO ,.
- the NO x portion would then be largely completely reduced with fuel as the reducing agent.
- the proportion of platinum in the SCR catalytic converter should be as low as possible in order to prevent conversion of the N0 X into N, 0 as far as possible.
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP02792605A EP1456512A1 (de) | 2001-12-06 | 2002-11-21 | Verfahren zur nachbehandlung von abgasen von brennkraftmaschinen und einrichtung hierf r |
JP2003551410A JP2005511962A (ja) | 2001-12-06 | 2002-11-21 | 内燃機関からの排気ガスの後処理方法および装置 |
US10/497,411 US20050102999A1 (en) | 2001-12-03 | 2002-11-21 | Method for aftertreatment of exhaust gases of internal combustion engines and corresponding device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10159849.1 | 2001-12-06 | ||
DE10159849A DE10159849A1 (de) | 2001-12-06 | 2001-12-06 | Verfahren zur Nachbehandlung von Abgasen von Brennkraftmaschinen und Einrichtung hierfür |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2003050399A1 true WO2003050399A1 (de) | 2003-06-19 |
Family
ID=7708201
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2002/004286 WO2003050399A1 (de) | 2001-12-03 | 2002-11-21 | Verfahren zur nachbehandlung von abgasen von brennkraftmaschinen und einrichtung hierfür |
Country Status (5)
Country | Link |
---|---|
US (1) | US20050102999A1 (de) |
EP (1) | EP1456512A1 (de) |
JP (1) | JP2005511962A (de) |
DE (1) | DE10159849A1 (de) |
WO (1) | WO2003050399A1 (de) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004056412B4 (de) * | 2004-11-23 | 2016-06-16 | Robert Bosch Gmbh | Verfahren zum Betreiben einer Brennkraftmaschine und Vorrichtung zur Durchführung des Verfahrens |
DE102004061247B4 (de) | 2004-12-20 | 2024-03-21 | Robert Bosch Gmbh | Verfahren zum Betreiben einer Brennkraftmaschine und Vorrichtung zur Durchführung des Verfahrens |
DE102005001119B4 (de) | 2005-01-10 | 2018-02-15 | Robert Bosch Gmbh | Verfahren zum Betreiben einer Brennkraftmaschine und Vorrichtung zur Durchführung des Verfahrens |
DE102005009464B4 (de) | 2005-03-02 | 2016-07-21 | Robert Bosch Gmbh | Verfahren zur Diagnose eines Systems zur Dosierung von Reagenzmittel und Druckluft in den Abgasbereich einer Brennkraftmaschine und Vorrichtung zur Durchführung des Verfahrens |
DE102006005863B4 (de) | 2006-02-09 | 2015-04-30 | Robert Bosch Gmbh | Verfahren zur Diagnose einer Abgasbehandlungsvorrichtung und Vorrichtung zur Durchführung des Verfahrens |
DE102006016447A1 (de) | 2006-04-07 | 2007-10-11 | Robert Bosch Gmbh | Verfahren zum Betreiben einer Dosiervorrichtung eines Abgas-Reinigungssystems und Vorrichtung zur Durchführung des Verfahrens |
DE102007025621A1 (de) | 2007-06-01 | 2008-12-04 | Robert Bosch Gmbh | Diagnoseverfahren für eine Reagenzmittel-Dosiereinrichtung und Vorrichtung zur Durchführung des Verfahrens |
DE102008002508A1 (de) | 2008-06-18 | 2009-12-24 | Robert Bosch Gmbh | Verfahren zum Betreiben einer Reagenzmittel-Dosiereinrichtung und Vorrichtung zur Durchführung des Verfahrens |
DE102009055082A1 (de) | 2009-12-21 | 2011-06-22 | Robert Bosch GmbH, 70469 | Verfahren zur Überwachung einer Schadstoff-Konvertierungsfähigkeit in einem Abgasnachbehandlungssystem |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5893267A (en) * | 1996-08-19 | 1999-04-13 | The Regents Of The University Of California | Catalytic reduction system for oxygen-rich exhaust |
DE10021693A1 (de) * | 2000-05-04 | 2001-11-15 | Siemens Ag | Verfahren und Vorrichtung zur Abgasreinigung |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DK0988104T3 (da) * | 1997-05-16 | 2002-11-18 | Siemens Ag | Fremgangsmåder og indretning til tilintetgørelse af skadelige oxidstoffer i en oxygenholdig røggas samt dermed drevet motor |
US6182443B1 (en) * | 1999-02-09 | 2001-02-06 | Ford Global Technologies, Inc. | Method for converting exhaust gases from a diesel engine using nitrogen oxide absorbent |
US6293097B1 (en) * | 1999-08-16 | 2001-09-25 | Ford Global Technologies, Inc. | On-board reductant delivery system |
US6311484B1 (en) * | 2000-02-22 | 2001-11-06 | Engelhard Corporation | System for reducing NOx transient emission |
-
2001
- 2001-12-06 DE DE10159849A patent/DE10159849A1/de not_active Ceased
-
2002
- 2002-11-21 EP EP02792605A patent/EP1456512A1/de not_active Withdrawn
- 2002-11-21 WO PCT/DE2002/004286 patent/WO2003050399A1/de not_active Application Discontinuation
- 2002-11-21 US US10/497,411 patent/US20050102999A1/en not_active Abandoned
- 2002-11-21 JP JP2003551410A patent/JP2005511962A/ja not_active Withdrawn
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5893267A (en) * | 1996-08-19 | 1999-04-13 | The Regents Of The University Of California | Catalytic reduction system for oxygen-rich exhaust |
DE10021693A1 (de) * | 2000-05-04 | 2001-11-15 | Siemens Ag | Verfahren und Vorrichtung zur Abgasreinigung |
Non-Patent Citations (1)
Title |
---|
ANONYMOUS: "Selective Catalytic Reduction", DIESELNET TECHNOLOGY GUIDE, XX, XX, August 2000 (2000-08-01), pages 1 - 12, XP002163384 * |
Also Published As
Publication number | Publication date |
---|---|
US20050102999A1 (en) | 2005-05-19 |
DE10159849A1 (de) | 2003-06-26 |
EP1456512A1 (de) | 2004-09-15 |
JP2005511962A (ja) | 2005-04-28 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE10104160B4 (de) | Verfahren zum Betreiben einer Abgasreinigungsanlage für einen Verbrennungsmotor | |
EP2029260B1 (de) | Katalysator zur verminderung stickstoff-haltiger schadgase aus dem abgas von dieselmotoren | |
EP2138681B1 (de) | Verfahren und Vorrichtung zur Reinigung von Dieselabgasen | |
EP1961933B1 (de) | Katalytisch aktiviertes Dieselpartikelfilter mit Ammoniak-Sperrwirkung | |
EP2040834B2 (de) | Strukturierter scr-katalysator zur reduktion von stickoxiden im abgas von magermotoren unter verwendung von ammoniak als reduktionsmittel | |
DE10328856B4 (de) | Steuerung und Diagnose von Abgasemissionen | |
EP2826971A1 (de) | Verfahren zur Verminderung von Stickoxiden in dieselmotorischen Abgasen und Abgasnachbehandlungssystem zur Durchführung des Verfahrens | |
DE10315593A1 (de) | Abgasnachbehandlungseinrichtung und -verfahren | |
WO2009124643A1 (de) | Abgasreinigungssystem zur behandlung von motorenabgasen mittels scr-katalysator | |
WO2008077602A1 (de) | Abgasreinigungsanlage für magermotoren und verfahren zum betreiben der anlage | |
WO2003050399A1 (de) | Verfahren zur nachbehandlung von abgasen von brennkraftmaschinen und einrichtung hierfür | |
DE102009044689A1 (de) | Abgasvorrichtung für ein Dieselfahrzeug | |
EP1177369B1 (de) | ABGASREINIGUNGSVERFAHREN UND ABGASREINIGUNGSVORRICHTUNG MIT NO x?-SPEICHERKATALYSATOR UND VORKATALYSATOR | |
DE102011102047A1 (de) | Verfahren und Vorrichtung zur Desulfatisierung einer in einer Diesel-Brennkraftmaschine angeordneten Abgasreinigungseinrichtung | |
DE102015121025A1 (de) | Nachbehandlungssystem für Dieselfahrzeuge | |
DE10360955A1 (de) | Abgasreinigungsanlage und Verfahren zur Entfernung von Stickoxiden aus dem Abgas von Verbrennungsmotoren mit Hilfe von katalytisch erzeugtem Ammoniak | |
DE10361791A1 (de) | Vorrichtung zur Reinigung des Abgases einer Brennkraftmaschine und Verfahren zur Regeneration einer solchen Abgasreinigungsanlage | |
DE102005025455B4 (de) | Vorrichtung und Verfahren zur Reinigung von Abgasen eines Verbrennungsmotors | |
DE102016121509B4 (de) | Vorrichtung und Verfahren zur Abgasnachbehandlung eines Verbrennungsmotors | |
EP1835982B1 (de) | Verfahren zur regeneration eines stickoxid-speicherkatalysators | |
WO2004108256A1 (de) | Abgasnachbehandlungsvorrichtung einer brennkraftmaschine | |
EP0811418B1 (de) | Abgaskatalysator | |
DE102019210415B4 (de) | Abgasnachbehandlung | |
DE19933736B4 (de) | Anordnung und Verfahren zur Reinigung eines Abgases einer Verbrennungskraftmaschine | |
DE102005036712A1 (de) | Vorrichtung und Verfahren zur Abgasnachbehandlung eines Verbrennungsmotors |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): JP US |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LU MC NL PT SE SK TR |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
DFPE | Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101) | ||
WWE | Wipo information: entry into national phase |
Ref document number: 2002792605 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2003551410 Country of ref document: JP |
|
WWP | Wipo information: published in national office |
Ref document number: 2002792605 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 10497411 Country of ref document: US |
|
WWW | Wipo information: withdrawn in national office |
Ref document number: 2002792605 Country of ref document: EP |