DE102006017398A1 - Method and device for protecting the freezing of a liquid reducing agent for the exhaust aftertreatment of an internal combustion engine - Google Patents
Method and device for protecting the freezing of a liquid reducing agent for the exhaust aftertreatment of an internal combustion engine Download PDFInfo
- Publication number
- DE102006017398A1 DE102006017398A1 DE102006017398A DE102006017398A DE102006017398A1 DE 102006017398 A1 DE102006017398 A1 DE 102006017398A1 DE 102006017398 A DE102006017398 A DE 102006017398A DE 102006017398 A DE102006017398 A DE 102006017398A DE 102006017398 A1 DE102006017398 A1 DE 102006017398A1
- Authority
- DE
- Germany
- Prior art keywords
- reducing agent
- internal combustion
- combustion engine
- heating
- freezing
- 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- Withdrawn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 ; 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
- 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
- F01N2610/10—Adding substances to exhaust gases the substance being heated, e.g. by heating tank or supply line of the added substance
-
- 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
- F01N2610/1486—Means to prevent the substance from freezing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P2060/00—Cooling circuits using auxiliaries
- F01P2060/16—Outlet manifold
-
- 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)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
Die Reduktionsmittelanlage eines Abgasbehandlungssystems einer Brennkraftmaschine wird durch einen vom Kühlwasserkreislauf der Brennkraftmaschine abgezweigten Heizwasserkreislauf beheizt. Das Heizwasser wird dabei durch die Apparaturen der Reduktionsmittelanlage unter enger Wärme abgebender Nachbarschaft zu den Reduktionsmittelschlauchleitungen geführt.The reducing agent system of an exhaust gas treatment system of an internal combustion engine is heated by a heating water circuit that is branched off from the cooling water circuit of the internal combustion engine. The heating water is fed through the apparatus of the reducing agent system to the reducing agent hose lines in close proximity to emitting heat.
Description
Die Erfindung betrifft eine Vorrichtung und ein Verfahren zum Beheizen einer Reduktionsmittelanlage für ein Abgasbehandlungssystem einer Brennkraftmaschine gemäß den Merkmalen der Patentansprüche 1 und 2.The The invention relates to an apparatus and a method for heating a reducing agent plant for an exhaust treatment system of an internal combustion engine according to the features of the claims 1 and 2.
Zur Verminderung von Stickoxidemissionen einer Brennkraftmaschine ist es bekannt, mit Hilfe der Selectiv-Catalytic-Reduktions-Technologie (SCR) Stickoxid in Luftstickstoff und Wasserdampf umzuwandeln. Als Reduktionsmittel wird wässerige Harnstofflösung verwandt, die in einem separaten Vorratsbehälter mitgeführt wird.to Reduction of nitrogen oxide emissions of an internal combustion engine is It is known, with the help of the Selectiv catalytic reduction technology (SCR) to convert nitric oxide into atmospheric nitrogen and water vapor. When Reducing agent becomes aqueous urea solution related, which is carried in a separate reservoir.
Das im Fahrzeug mitgeführte Reduktionsmittel wird aus dem separaten Reduktionsmittelbehälter über eine Pumpe einem Dosiermodul zugeführt, von dem es in den Abgasstrom vor dem Katalysator eingespritzt wird. Vorratsbehälter, Pumpe und Dosiermodul sind über Schlauchleitungen miteinander verbunden, über die das eine wässerige Lösung darstellende Reduktionsmittel wie z.B. eine Harnstofflösung gefördert wird. Nachteilig bei diesen wässrigen Lösungen ist, dass in Abhängigkeit der Konzentration der gelösten Substanz die Gefahr des Einfrierens ab ca. 11°C besteht. Es ist bekannt, den Vorratsbehälter und die Zuführungsleitungen mittels einer elektrischen Heizung zu beheizen, um die Einfriergefahr zu minimieren.The in the vehicle Reducing agent is removed from the separate reducing agent tank via a Pump supplied to a dosing module, from which it is injected into the exhaust stream upstream of the catalyst. Reservoir Pump and dosing module are over Hose lines interconnected, over which the one aqueous solution representative reducing agents, e.g. a urea solution is conveyed. A disadvantage of these aqueous solutions is that dependent the concentration of the dissolved Substance the risk of freezing from about 11 ° C is. It is known that Reservoir and the supply lines to heat by means of an electric heater to reduce the risk of freezing to minimize.
Aus
der
Aus
der
Diese Anordnung ist nachteilig, da innerhalb der Koaxialleitung die Reduktionsmittelpumpe angeordnet werden muss und diese Anordnung nur bei der Erwärmung bei Hochdruckkraftstoffeinspritzsystemen möglich ist. Des Weiteren besteht die Gefahr, dass es zu einer Vermischung der Medien kommt, wenn nur die kleinste Undichtigkeit entsteht. Eine solche Vermischung zerstört in kurzer Zeit den kompletten Motor durch Korrosion aufgrund der korrosiven Eigenschaften der Harnstofflösung.These Arrangement is disadvantageous because within the coaxial line, the reducing agent pump must be arranged and this arrangement only in the heating at High pressure fuel injection systems is possible. Furthermore exists the danger that it comes to a mixing of the media, if only the smallest leak arises. Such a mixture destroyed in a short time the whole engine due to corrosion due to corrosive properties of the urea solution.
Der Erfindung liegt die Aufgabe zugrunde, das Einfrieren des in den Anschlussleitungen über die Förderpumpe zum Dosiermodul geleiteten flüssigen Reduktionsmittels sicher und mit geringerem Aufwand zu vermeiden.Of the Invention is based on the object, the freezing of the in the Connecting cables over the feed pump directed to the dosing module liquid Reducing agent safely and with less effort to avoid.
Diese Aufgabe wird für die Vorrichtung durch die Merkmale des Patentanspruchs 1 und für das Verfahren durch die Merkmale des Anspruchs 2 gelöst.These Task is for the device by the features of claim 1 and for the method solved by the features of claim 2.
Der vom Kühlwasserkreislauf der Brennkraftmaschine abgezweigte Heizwasserkreislauf wird zirkulierend durch die gesamte Reduktionsmittelanlage geführt. Dabei verläuft er in enger Wärme abgebender Nachbarschaft zu den die Aggregate bzw. Apparaturen der Reduktionsmittelanlage verbindenden Schlauchleitungen, was beispielsweise durch eine enge gemeinsame, unter Berührung verlaufende Verlegung der Leitungen ermöglicht wird.Of the from the cooling water circuit the heating engine branched heating water circulation is circulating passed through the entire reducing agent plant. He goes in tight heat donating neighborhood to the aggregates or apparatuses of the Reducing agent system connecting hoses, which, for example through a close joint, under touch laying allows the lines becomes.
Die Aggregate bzw. Apparaturen selbst sowie die Verbindungsanschlüsse der Schlauchleitungen werden von dem geschlossenen Heizwasserkreislauf durchströmt.The Aggregates or apparatuses themselves as well as the connection connections of the Hose lines are from the closed Heizwasserkreislauf flows through.
Anhand der schematischen Zeichnung wird nachstehend ein Ausführungsbeispiel der Erfindung näher erläutert.Based The schematic drawing is an embodiment below closer to the invention explained.
Der
von dem hier nicht gezeigten Kühlwasserkreislauf
der Brennkraftmaschine abgezweigte Heizwasserkreislauf
Der
Förderweg
der dem Vorratsbehälter
Die
Schlauchleitungen
Claims (2)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006017398A DE102006017398A1 (en) | 2006-04-13 | 2006-04-13 | Method and device for protecting the freezing of a liquid reducing agent for the exhaust aftertreatment of an internal combustion engine |
EP07726520A EP2010767A1 (en) | 2006-04-13 | 2007-02-27 | Method and device for preventing the freezing of a liquid reduction agent for treating the exhaust gas of an internal combustion engine |
PCT/EP2007/051821 WO2007118729A1 (en) | 2006-04-13 | 2007-02-27 | Method and device for preventing the freezing of a liquid reduction agent for treating the exhaust gas of an internal combustion engine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006017398A DE102006017398A1 (en) | 2006-04-13 | 2006-04-13 | Method and device for protecting the freezing of a liquid reducing agent for the exhaust aftertreatment of an internal combustion engine |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102006017398A1 true DE102006017398A1 (en) | 2007-10-18 |
Family
ID=38137649
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102006017398A Withdrawn DE102006017398A1 (en) | 2006-04-13 | 2006-04-13 | Method and device for protecting the freezing of a liquid reducing agent for the exhaust aftertreatment of an internal combustion engine |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP2010767A1 (en) |
DE (1) | DE102006017398A1 (en) |
WO (1) | WO2007118729A1 (en) |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4432577A1 (en) * | 1994-09-13 | 1996-03-14 | Siemens Ag | Assembly for introduction of liq. into selective catalytic redn. assembly |
DE19935920C2 (en) | 1999-07-30 | 2003-04-17 | Siemens Ag | Device and method for heating a reducing agent reservoir of an exhaust gas aftertreatment system for an internal combustion engine |
US6810661B2 (en) | 2002-08-09 | 2004-11-02 | Ford Global Technologies, Llc | Method and system for freeze protecting liquid NOx reductants for vehicle application |
JP3751962B2 (en) * | 2003-09-05 | 2006-03-08 | 日産ディーゼル工業株式会社 | Engine exhaust purification system |
US7614213B2 (en) * | 2003-09-19 | 2009-11-10 | Nissan Diesel Motor Co., Ltd. | Engine exhaust emission purification apparatus |
SE529158C2 (en) * | 2005-02-23 | 2007-05-15 | Scania Cv Abp | Methods and apparatus for supplying additive for exhaust gas purification and conduction |
-
2006
- 2006-04-13 DE DE102006017398A patent/DE102006017398A1/en not_active Withdrawn
-
2007
- 2007-02-27 WO PCT/EP2007/051821 patent/WO2007118729A1/en active Application Filing
- 2007-02-27 EP EP07726520A patent/EP2010767A1/en not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
WO2007118729A1 (en) | 2007-10-25 |
EP2010767A1 (en) | 2009-01-07 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE19935920C2 (en) | Device and method for heating a reducing agent reservoir of an exhaust gas aftertreatment system for an internal combustion engine | |
DE102007044403B4 (en) | Device for introducing a reducing agent liquid into an exhaust gas of a combustion plant | |
EP2010768B1 (en) | Heatable hose line system for exhaust gas aftertreatment units in internal combustion engines | |
EP1841956A1 (en) | Exhaust gas subsequent processing method and method therefor | |
DE10150518C1 (en) | Method and device for exhaust gas aftertreatment in an internal combustion engine | |
EP2415986B1 (en) | Device having a reducing agent line and a wind protection element | |
DE112011104219T5 (en) | Reagenzbehälternormalisierungssystem | |
DE102015102003A1 (en) | Centerline injection for liquid-only reductant delivery | |
DE102008061471B4 (en) | A method of melting and / or heating a reductant fluid in an SCR exhaust aftertreatment system | |
DE102007056202A1 (en) | Exhaust after-treatment device for an internal combustion engine and method for the after-treatment of exhaust gases of an internal combustion engine | |
DE102006017398A1 (en) | Method and device for protecting the freezing of a liquid reducing agent for the exhaust aftertreatment of an internal combustion engine | |
DE102012006249A1 (en) | Feed unit for a liquid additive with a temperature sensor | |
DE102009002120A1 (en) | Injection device for urea water solution | |
DE102007049850A1 (en) | Exhaust after-treatment system for an internal combustion engine | |
DE102014219061A1 (en) | Exhaust after-treatment system for internal combustion engines | |
DE102012018141B4 (en) | SCR module | |
DE102007038410B4 (en) | Apparatus and method for the selective catalytic reduction of nitrogen oxides in an oxygen-containing exhaust gas of an incinerator | |
DE102017218392A1 (en) | Device for exhaust aftertreatment for an internal combustion engine | |
WO2019029881A1 (en) | Tank device for exhaust gas post-treatment system | |
DE102018209364A1 (en) | Heating and pressure generating device for conveying a freezable fluid for use in a motor vehicle and container for the fluid | |
DE102018201511A1 (en) | Exhaust after-treatment system, method for operating an exhaust aftertreatment system | |
DE102019000967A1 (en) | Tank delivery module for a tank in a motor vehicle | |
DE102018105514A1 (en) | Method and device for reducing the nitrogen oxides in the exhaust gas of an internal combustion engine | |
DE102015217926A1 (en) | Apparatus and method for heating the contents of a reducing agent tank | |
DE102018209363A1 (en) | Container for a freezable fluid for use in a motor vehicle and method using the container |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
R012 | Request for examination validly filed |
Effective date: 20120816 |
|
R120 | Application withdrawn or ip right abandoned | ||
R120 | Application withdrawn or ip right abandoned |
Effective date: 20150306 |