DE102008041903A1 - Exhaust gas post-treatment method for diesel engine of motor vehicle, involves providing auxiliary fluid in auxiliary agent, and supplying fuel to internal-combustion engine from fuel tank that is exclusively refueled with fuel - Google Patents
Exhaust gas post-treatment method for diesel engine of motor vehicle, involves providing auxiliary fluid in auxiliary agent, and supplying fuel to internal-combustion engine from fuel tank that is exclusively refueled with fuel Download PDFInfo
- Publication number
- DE102008041903A1 DE102008041903A1 DE102008041903A DE102008041903A DE102008041903A1 DE 102008041903 A1 DE102008041903 A1 DE 102008041903A1 DE 102008041903 A DE102008041903 A DE 102008041903A DE 102008041903 A DE102008041903 A DE 102008041903A DE 102008041903 A1 DE102008041903 A1 DE 102008041903A1
- Authority
- DE
- Germany
- Prior art keywords
- fuel
- combustion engine
- exhaust gas
- aqueous solution
- internal combustion
- 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.)
- Withdrawn
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
- F01N3/10—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
- F01N3/206—Adding periodically or continuously substances to exhaust gases for promoting purification, e.g. catalytic material in liquid form, NOx reducing agents
- 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
- 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
- F01N3/105—General auxiliary catalysts, e.g. upstream or downstream of the main catalyst
- F01N3/106—Auxiliary oxidation catalysts
-
- 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
-
- 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
-
- 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
- F01N2610/14—Arrangements for the supply of substances, e.g. conduits
- F01N2610/1406—Storage means for substances, e.g. tanks or reservoirs
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using 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
- Y02T10/12—Improving ICE efficiencies
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
Description
Stand der TechnikState of the art
Die Erfindung geht aus von einem Verfahren beziehungsweise von einer Vorrichtung zur Abgasnachbehandlung nach der Gattung der unabhängigen Ansprüche.The Invention is based on a method or of a Device for exhaust aftertreatment according to the type of independent Claims.
Aus
der
Aus
der
Es
ist bekannt, dass Adblue bei –11 Grad Celsius friert, so
dass ein Verfahren zur Reduktion motorischer Stickoxide das Einfrieren
des Mediums beherrschen muss, was auch von den Zulassungsbehörden
gefordert wird. Eine Möglichkeit besteht darin, wie beispielsweise
in der
Aus
der
Des
weiteren sind Maßnahmen gegen Schäden an Komponenten
vorzusehen, die durch die Expansion des Mediums beim Einfrieren
hervorgerufen werden. Beispielsweise ist es aus der
Bekannt
ist des Weiteren aus der
Bekannt
ist es des Weiteren aus der
Aus
der
Aus
der
Aus
der
Es
ist ferner bekannt, durch Zusatz von Ammoniumformiat zur Lösung
von Harnstoff in Wasser den Gefrierpunkt deutlich abzusenken. Eine
Lösung von 26,2% Ammoniumformiat und 20,1% Harnstoff in Wasser
besitzt beispielsweise einen Gefrierpunkt von –30 Grad
Celsius und ist kommerziell unter der Bezeichnung Denoxium-30 verfügbar
(siehe hierzu die im Internet über den Verweis
Aus
der
Aus
der
Offenbarung der ErfindungDisclosure of the invention
Das erfindungsgemäße Verfahren beziehungsweise die erfindungsgemäße Vorrichtung mit den kennzeichnenden Merkmalen der unabhängigen Ansprüche haben demgegenüber den Vorteil, ein Gefrieren eines Hilfsmittels zur Reduktion von Stickoxiden zu vermeiden, ohne aufwendige Maßnahmen zur Separation von miteinander vermischten Flüssigkeiten an Bord eines Kraftfahrzeugs vorsehen zu müssen. Während es aus dem Stand der Technik bekannt ist, den Inhalt eines Kraftstofftanks zu verändern, wird erfindungsgemäß ein Beibehalten der üblichen Befüllung eines Kraftstofftanks vorgesehen, während ein Hilfsmittelbehälter mit einem gefrierfesten Medium befüllt wird. Dieses Medium kann in vorteilhafter Weise entweder von vornherein in den Hilfsmittelbehälter eingefüllt werden, oder das Hilfsmittel kann an Bord des Kraftfahrzeugs hergestellt werden, beispielsweise durch Vermischung einer wässrigen Lösung des Wirkstoffs bzw. einer Vorläufersubstanz des Wirkstoffs mit Kraftstoff. Diese Vermischung kann auf Vorrat oder bedarfsgerecht in variablen Mischungsverhältnissen erfolgen. Die Trägerflüssigkeit bzw. Zusatzflüssigkeit hat einen niedrigeren Schmelzpunkt als die wässrige Lösung, so dass das Hilfsmittel beispielsweise in Form einer Emulsion nach einem etwaigen Erstarren der wässrigen Phase als Zweiphasengemisch fließfähig bleibt. In vorteilhafter Weise kann das SCR-System durch Entfall von Heizungselementen, Ventilen beziehungsweise Rücksaugfunktionen wesentlich vereinfacht werden. Wird der Gefrierpunkt der wässrigen Lösung unterschritten, friert sie in der Emulsion zu fein verteilten Eispartikeln. Da der Gefrierpunkt des Trägermediums der Emulsion erheblich niedriger liegt, bleibt die gesamte Emulsion fließfähig und damit pumpbar. Es entfällt damit im System die Notwendigkeit, den gesamten Reduktionsmitteltank aufzutauen. Damit kann die Dosierung unmittelbar nach Systemstart beginnen. In diesem Fall können bei Gefrierbedingungen die fein verteilten Eispartikel der wässrigen Lösung der Emulsion direkt in die Abgasanlage eingespritzt und dort verdampft werden.The inventive method or the inventive device with the characterizing Features of the independent claims have in contrast the advantage of freezing an aid for the reduction of To avoid nitrogen oxides without consuming measures to Separation of intermixed liquids To provide boarding a motor vehicle. While It is known from the prior art, the contents of a fuel tank to change, according to the invention a Maintaining the usual filling of a fuel tank provided while a resource container with a freezing medium is filled. This medium can advantageously either from the outset in the resource container be filled, or the aid may aboard the Motor vehicle are prepared, for example by mixing an aqueous solution of the active ingredient or a Precursor substance of the active substance with fuel. These Mixing may be in stock or as needed in variable mixing ratios respectively. The carrier liquid or additional liquid has a lower melting point than the aqueous solution, so that the aid, for example in the form of an emulsion a possible solidification of the aqueous phase as a two-phase mixture remains fluid. In an advantageous way the SCR system by elimination of heating elements, valves or Rücksaugfunktionen be greatly simplified. Will the freezing point of the aqueous Solution falls below, it freezes in the emulsion too fine distributed ice particles. As the freezing point of the carrier medium the emulsion is significantly lower, the entire emulsion remains flowable and thus pumpable. It is omitted so that in the system the need, the entire reducing agent tank thaw. This allows the dosage immediately after system start kick off. In this case, under freezing conditions the finely divided ice particles of the aqueous solution The emulsion injected directly into the exhaust system and evaporated there become.
Durch die in den abhängigen Ansprüchen aufgeführten Maßnahmen sind vorteilhafte Weiterbildungen und Verbesserungen der in den unabhängigen Ansprüchen angegebenen Verfahren und Vorrichtungen möglich.By those listed in the dependent claims Measures are advantageous developments and improvements that specified in the independent claims Methods and devices possible.
Besonders vorteilhaft ist der Einsatz von Adblue als Emulsion insbesondere mit einer nicht wasserlöslichen Trägerflüssigkeit bzw. Zusatzflüssigkeit, beispielsweise Dieselkraftstoff, Ottokraftstoff, Öl, Formaldehyd usw. Geeignet hierfür sind aliphatische oder aromatische Kohlenwasserstoffe oder Gemische davon. Dieses Trägermedium muss unschädlich sein, wenn es in den Abgasstrang eingespritzt wird.Especially advantageous is the use of Adblue as an emulsion in particular with a non-water-soluble carrier liquid or additional liquid, for example diesel fuel, Petrol, oil, formaldehyde, etc. Suitable for this purpose are aliphatic or aromatic hydrocarbons or mixtures from that. This carrier medium must be harmless when it is injected into the exhaust line.
Werden vorteilhafterweise Kohlenwasserstoffe beziehungsweise der Kraftstoff als Zusatzflüssigkeit verwendet, der ohnehin für den Betrieb der Brennkraftmaschine eingesetzt wird, werden diese Kohlenwasserstoffe bzw. wird dieser Kraftstoff im Luftüberschuss des Abgases oxidiert, beispielsweise an einem Oxidationskatalysator. Die dabei freigesetzte Wärme kann im Sinne der Erfindung zielführend eingesetzt werden, um Abgastemperaturen zu erhöhen. Dies ermöglicht motorfernere Anbauorte von Funktionskomponenten wie Katalysatoren oder Partikelfiltern mit größerem Freiraum bei der Verpackung (engl. „Packaging”) sowie verringertem konstruktiven Aufwand zum Beispiel durch Entfall von Isolierungen an der Abgasanlage.Become advantageously hydrocarbons or the fuel used as an additional liquid, anyway for the operation of the internal combustion engine is used, these hydrocarbons or this fuel is in the excess of air of the exhaust gas oxidized, for example on an oxidation catalyst. The case released heat can purposeful in the context of the invention be used to increase exhaust gas temperatures. This enables more motor-driven mounting locations of functional components like catalysts or particle filters with larger ones Free space for packaging ("packaging") as well as reduced design effort, for example by omission of insulation on the exhaust system.
Neben den genannten zwei Flüssigkeiten (beispielsweise Kraftstoff und AdBlue) kann die Emulsion weitere Bestandteile enthalten, insbesondere Emulgatoren oder ähnliche Hilfsstoffe, die die Homogenität der Emulsion aufrechterhalten.Next the said two liquids (for example fuel and AdBlue), the emulsion may contain other ingredients, in particular Emulsifiers or similar excipients that the homogeneity maintained the emulsion.
Weitere Vorteile ergeben sich durch die weiteren in den weiteren abhängigen Ansprüchen und in der Beschreibung genannten Merkmale.Further Benefits result from the others in the other dependent Claims and features mentioned in the description.
Kurze Beschreibung der ZeichnungenBrief description of the drawings
Ausführungsbeispiele der Erfindung sind in der Zeichnung dargestellt und in der nachfolgenden Beschreibung näher erläutert.embodiments The invention are illustrated in the drawing and in the following description explained in more detail.
Es zeigenIt demonstrate
Ausführungsformen der Erfindungembodiments the invention
Das
im Hilfsmittelbehälter
In
alternativen Ausführungsformen können Heizelemente
im System lokal an spezifischen Stellen angeordnet sein, um die
lokalen Mengen oder Mengenströme der Emulsion aufzuwärmen,
ohne dass das Volumen des Hilfsmittelbehälters
Die
so an Bord des Kraftfahrzeugs erzeugte Emulsion wird, in gleicher
Weise wie in
ZITATE ENTHALTEN IN DER BESCHREIBUNGQUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- - DE 19728343 [0002] DE 19728343 [0002]
- - EP 0928884 [0003] EP 0928884 [0003]
- - EP 1194682 [0004] EP 1194682 [0004]
- - DE 102006046900 [0005] - DE 102006046900 [0005]
- - DE 10058015 [0006] - DE 10058015 [0006]
- - DE 102004054238 [0007] - DE 102004054238 [0007]
- - WO 2007/031467 [0008] - WO 2007/031467 [0008]
- - DE 10154421 [0009] - DE 10154421 [0009]
- - EP 1561016 [0010] - EP 1561016 [0010]
- - DE 102008002357 [0011] - DE 102008002357 [0011]
- - DE 10301605 [0013] - DE 10301605 [0013]
- - US 5809774 [0014, 0014] US 5809774 [0014, 0014]
Zitierte Nicht-PatentliteraturCited non-patent literature
- - http://www.dieselnet.com/tech/cat_scr.html [0012] - http://www.dieselnet.com/tech/cat_scr.html [0012]
Claims (18)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102008041903A DE102008041903A1 (en) | 2008-09-09 | 2008-09-09 | Exhaust gas post-treatment method for diesel engine of motor vehicle, involves providing auxiliary fluid in auxiliary agent, and supplying fuel to internal-combustion engine from fuel tank that is exclusively refueled with fuel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102008041903A DE102008041903A1 (en) | 2008-09-09 | 2008-09-09 | Exhaust gas post-treatment method for diesel engine of motor vehicle, involves providing auxiliary fluid in auxiliary agent, and supplying fuel to internal-combustion engine from fuel tank that is exclusively refueled with fuel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE102008041903A1 true DE102008041903A1 (en) | 2010-03-11 |
Family
ID=41650610
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE102008041903A Withdrawn DE102008041903A1 (en) | 2008-09-09 | 2008-09-09 | Exhaust gas post-treatment method for diesel engine of motor vehicle, involves providing auxiliary fluid in auxiliary agent, and supplying fuel to internal-combustion engine from fuel tank that is exclusively refueled with fuel |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE102008041903A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102010030388A1 (en) | 2010-06-23 | 2011-12-29 | Robert Bosch Gmbh | Dosing system for introducing e.g. urea water solution into exhaust line of combustion engine of motor car to reduce nitrogen oxide in exhaust gas, has capillary barrier switched-on in line near to metering valve and integrated into valve |
| WO2017093644A1 (en) * | 2015-12-02 | 2017-06-08 | Total Marketing Services | Composition made from urea for treating exhaust gases |
| US9957862B2 (en) | 2014-04-03 | 2018-05-01 | Robert Bosch Gmbh | Secondary heating device for diesel exhaust fluid tank |
| WO2018178592A1 (en) | 2017-03-31 | 2018-10-04 | Total Marketing Services | Composition made from urea for treating exhaust gases |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5809774A (en) | 1996-11-19 | 1998-09-22 | Clean Diesel Technologies, Inc. | System for fueling and feeding chemicals to internal combustion engines for NOx reduction |
| DE19728343C1 (en) | 1997-07-03 | 1999-04-15 | Bosch Gmbh Robert | Method and device for selective catalytic NOx reduction |
| EP0928884A2 (en) | 1998-01-08 | 1999-07-14 | Robert Bosch Gmbh | Mixture delivery device |
| EP1194682A1 (en) | 1999-06-22 | 2002-04-10 | Robert Bosch Gmbh | Device for dosing a reducing agent |
| DE10058015A1 (en) | 2000-11-23 | 2002-05-29 | Bosch Gmbh Robert | metering valve |
| DE10154421A1 (en) | 2001-11-06 | 2003-05-22 | Bosch Gmbh Robert | Method and device for reducing nitrogen oxides in an exhaust gas |
| DE10301605A1 (en) | 2003-01-17 | 2004-07-29 | Robert Bosch Gmbh | Method for operating a catalyst and device for dosing at least one reagent |
| EP1561016A1 (en) | 2002-11-06 | 2005-08-10 | Robert Bosch Gmbh | Device for the secondary treatment of the exhaust gas of an internal combustion engine |
| DE102004054238A1 (en) | 2004-11-10 | 2006-05-11 | Robert Bosch Gmbh | Dosing system and method for operating a dosing system |
| WO2007031467A2 (en) | 2005-09-12 | 2007-03-22 | Robert Bosch Gmbh | Vehicle tank for a liquid reducing agent, in particular an urea solution |
| DE102006046900A1 (en) | 2006-10-04 | 2008-04-10 | Robert Bosch Gmbh | Method for operating an internal combustion engine |
| DE102008002357A1 (en) | 2008-06-11 | 2009-12-17 | Robert Bosch Gmbh | Process for the aftertreatment of the exhaust gas of an internal combustion engine |
-
2008
- 2008-09-09 DE DE102008041903A patent/DE102008041903A1/en not_active Withdrawn
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5809774A (en) | 1996-11-19 | 1998-09-22 | Clean Diesel Technologies, Inc. | System for fueling and feeding chemicals to internal combustion engines for NOx reduction |
| DE19728343C1 (en) | 1997-07-03 | 1999-04-15 | Bosch Gmbh Robert | Method and device for selective catalytic NOx reduction |
| EP0928884A2 (en) | 1998-01-08 | 1999-07-14 | Robert Bosch Gmbh | Mixture delivery device |
| EP1194682A1 (en) | 1999-06-22 | 2002-04-10 | Robert Bosch Gmbh | Device for dosing a reducing agent |
| DE10058015A1 (en) | 2000-11-23 | 2002-05-29 | Bosch Gmbh Robert | metering valve |
| DE10154421A1 (en) | 2001-11-06 | 2003-05-22 | Bosch Gmbh Robert | Method and device for reducing nitrogen oxides in an exhaust gas |
| EP1561016A1 (en) | 2002-11-06 | 2005-08-10 | Robert Bosch Gmbh | Device for the secondary treatment of the exhaust gas of an internal combustion engine |
| DE10301605A1 (en) | 2003-01-17 | 2004-07-29 | Robert Bosch Gmbh | Method for operating a catalyst and device for dosing at least one reagent |
| DE102004054238A1 (en) | 2004-11-10 | 2006-05-11 | Robert Bosch Gmbh | Dosing system and method for operating a dosing system |
| WO2007031467A2 (en) | 2005-09-12 | 2007-03-22 | Robert Bosch Gmbh | Vehicle tank for a liquid reducing agent, in particular an urea solution |
| DE102006046900A1 (en) | 2006-10-04 | 2008-04-10 | Robert Bosch Gmbh | Method for operating an internal combustion engine |
| DE102008002357A1 (en) | 2008-06-11 | 2009-12-17 | Robert Bosch Gmbh | Process for the aftertreatment of the exhaust gas of an internal combustion engine |
Non-Patent Citations (1)
| Title |
|---|
| http://www.dieselnet.com/tech/cat_scr.html |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102010030388A1 (en) | 2010-06-23 | 2011-12-29 | Robert Bosch Gmbh | Dosing system for introducing e.g. urea water solution into exhaust line of combustion engine of motor car to reduce nitrogen oxide in exhaust gas, has capillary barrier switched-on in line near to metering valve and integrated into valve |
| DE102010030388B4 (en) | 2010-06-23 | 2024-02-01 | Robert Bosch Gmbh | Dosing system for a reducing agent |
| US9957862B2 (en) | 2014-04-03 | 2018-05-01 | Robert Bosch Gmbh | Secondary heating device for diesel exhaust fluid tank |
| WO2017093644A1 (en) * | 2015-12-02 | 2017-06-08 | Total Marketing Services | Composition made from urea for treating exhaust gases |
| FR3044564A1 (en) * | 2015-12-02 | 2017-06-09 | Total Marketing Services | UREA-BASED COMPOSITION FOR THE TREATMENT OF EXHAUST GASES |
| CN108367239A (en) * | 2015-12-02 | 2018-08-03 | 道达尔销售服务公司 | The composition prepared by urea for handling exhaust gas |
| US10399035B2 (en) | 2015-12-02 | 2019-09-03 | Total Marketing Services | Composition made from urea for treating exhaust gases |
| WO2018178592A1 (en) | 2017-03-31 | 2018-10-04 | Total Marketing Services | Composition made from urea for treating exhaust gases |
| FR3064495A1 (en) * | 2017-03-31 | 2018-10-05 | Total Marketing Services | UREA-BASED COMPOSITION FOR THE TREATMENT OF EXHAUST GASES |
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