DE102019217351A1 - Valve arrangement - Google Patents
Valve arrangement Download PDFInfo
- Publication number
- DE102019217351A1 DE102019217351A1 DE102019217351.9A DE102019217351A DE102019217351A1 DE 102019217351 A1 DE102019217351 A1 DE 102019217351A1 DE 102019217351 A DE102019217351 A DE 102019217351A DE 102019217351 A1 DE102019217351 A1 DE 102019217351A1
- Authority
- DE
- Germany
- Prior art keywords
- valve
- metering
- arrangement according
- valve arrangement
- check valve
- 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.)
- Pending
Links
Images
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
- 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
- F01N2240/16—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 an electric heater, i.e. a resistance heater
-
- 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
- F01N2610/1453—Sprayers or atomisers; Arrangement thereof in the exhaust apparatus
- F01N2610/146—Control thereof, e.g. control of injectors or injection valves
-
- 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
- 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
- F01N2610/1493—Purging the reducing agent out of the conduits or nozzle
-
- 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
Ventilanordnung (1) zur Dosierung eines gefrierfähigen Hilfsmittels (13) zur Abgasnachbehandlung, mit einem Dosierventil (3) zur Einbringung des Hilfsmittels in die Abgasleitung einer Brennkraftmaschine und mit mindestens einem Mittel (4) zum Schutz vor Gefrierschäden, dadurch gekennzeichnet, daß das mindestens eine Mittel (4) mindestens ein Ventilelement (5) umfaßt.Valve arrangement (1) for metering a freezable aid (13) for exhaust gas aftertreatment, with a metering valve (3) for introducing the aid into the exhaust pipe of an internal combustion engine and with at least one means (4) for protection against freezing damage, characterized in that the at least one Means (4) comprises at least one valve element (5).
Description
Stand der TechnikState of the art
Die Erfindung geht aus von einer Ventilanordnung zur Dosierung eines gefrierfähigen Hilfsmittels zur Abgasnachbehandlung nach der Gattung des unabhängigen Anspruchs.The invention is based on a valve arrangement for metering a freezable aid for exhaust gas aftertreatment according to the preamble of the independent claim.
Es ist schon bekannt, daß eine solche Ventilanordnung ein Mittel zum Schutz vor Gefrierschäden umfassen kann, welches derart ausgestaltet ist, daß es auftretende Volumenvergrößerungen eines sich in der Ventilanordnung befindlichen Fluids kompensieren kann, um die Ventilanordnung beispielsweise vor Schäden durch eine einfrierende Harnstofflösung zu schützen. Beispielsweise offenbart die
Aus der
Beide Vorgehensweisen sind aufwändig und teuer.Both approaches are complex and expensive.
Aus der
Offenbarung der ErfindungDisclosure of the invention
Die erfindungsgemäße Ventilanordnung mit den kennzeichnenden Merkmalen des unabhängigen Anspruchs hat demgegenüber den Vorteil, dass sie vor Gefrierschäden geschützt wird, ohne hierfür eine Pumpe, insbesondere eine in ihrer Förderrichtung umkehrbare Förderpumpe, verwenden oder zusätzliche konstruktive Maßnahmen innerhalb des Dosierventils vorsehen zu müssen. In vorteilhafter Weise wird es möglich, eine Entleerung des Dosierventils bei Betriebsende durch ein Verdampfen des Hilfsmittels, beispielsweise einer wässrigen Harnstofflösung, zu erreichen, welche durch die am Dosierventil anliegende Wärme des Abgasstrangs ausgelöst wird. Dabei verhindert das neben dem Dosierventil vorgesehene mindestens eine Ventilelement in vorteilhafter Weise ein Rückströmen des Hilfsmittels in das Dosierventil bei einer sich anschließenden Abkühlung des Abgasstrangs.The valve arrangement according to the invention with the characterizing features of the independent claim has the advantage that it is protected from freezing damage without having to use a pump, in particular a feed pump reversible in its conveying direction, or having to provide additional structural measures within the metering valve. It is advantageously possible to empty the metering valve at the end of operation by evaporating the auxiliary agent, for example an aqueous urea solution, which is triggered by the heat of the exhaust gas line applied to the metering valve. In this case, the at least one valve element provided in addition to the metering valve advantageously prevents the aid from flowing back into the metering valve when the exhaust gas line subsequently cools down.
Durch die in den abhängigen Ansprüchen aufgeführten Maßnahmen sind vorteilhafte Weiterbildungen und Verbesserungen der im unabhängigen Anspruch angegebenen Ventilanordnung möglich.The measures listed in the dependent claims make advantageous developments and improvements of the valve arrangement specified in the independent claim possible.
FigurenlisteFigure list
Ausführungsbeispiele der Erfindung sind in der Zeichnung dargestellt und in der nachfolgenden Beschreibung näher erläutert.Exemplary embodiments of the invention are shown in the drawing and explained in more detail in the description below.
Es zeigen
-
1 eine Ventilanordnung im Dosierbetrieb, -
2 eine Ventilanordnung unmittelbar nach dem Schließen des Dosierventils, -
3 eine Ventilanordnung, welche sich aufheizt, -
4 eine Ventilanordnung mit verdampfendem Hilfsmittel und -
5 eine Ventilanordnung, welche sich abkühlt.
-
1 a valve arrangement in dosing mode, -
2 a valve arrangement immediately after closing the metering valve, -
3rd a valve assembly that heats up, -
4th a valve arrangement with evaporating aid and -
5 a valve assembly which cools down.
Ausführungsformen der ErfindungEmbodiments of the invention
In einer weiteren Ausgestaltung kann die im Ventilkörper
In
Am Ende des Fahrzyklus wird die Dosierung beendet und das Dosierventil
In der Regel liegt die Temperatur der nicht näher dargestellten Abgasanlage oberhalb der Siedetemperatur von wässriger Harnstofflösung. Dadurch kommt es zu einer Verdampfung des gefrierfähigen Hilfsmittels bzw. der wässrigen Harnstofflösung im Dosierventil
In
Sollte sich im Betriebszustand
ZITATE ENTHALTEN IN DER BESCHREIBUNGQUOTES INCLUDED 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 of the documents listed by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.
Zitierte PatentliteraturPatent literature cited
- EP 1339956 B1 [0002]EP 1339956 B1 [0002]
- EP 1965049 B1 [0002]EP 1965049 B1 [0002]
- EP 2225466 B1 [0003]EP 2225466 B1 [0003]
- DE 102012206822 A1 [0005]DE 102012206822 A1 [0005]
Claims (19)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102019217351.9A DE102019217351A1 (en) | 2019-11-11 | 2019-11-11 | Valve arrangement |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102019217351.9A DE102019217351A1 (en) | 2019-11-11 | 2019-11-11 | Valve arrangement |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102019217351A1 true DE102019217351A1 (en) | 2021-05-12 |
Family
ID=75583856
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102019217351.9A Pending DE102019217351A1 (en) | 2019-11-11 | 2019-11-11 | Valve arrangement |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE102019217351A1 (en) |
-
2019
- 2019-11-11 DE DE102019217351.9A patent/DE102019217351A1/en active Pending
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE102007017459B4 (en) | Method for metering reducing agent to the exhaust gas of an internal combustion engine and control unit | |
DE102010016654B4 (en) | Exhaust gas cleaning system of an internal combustion engine | |
DE102014201678B4 (en) | Intercooler system with integrated heating device | |
EP3551857B1 (en) | Method for operating an electrically heated catalyst | |
EP2140117B1 (en) | Process and device for dosing a reducing agent in an exhaust system of an internal combustion engine | |
WO2012079708A1 (en) | Metering arrangement and method for operating a metering arrangement | |
EP2686526A2 (en) | Method for operating a steam cycle process | |
DE102009029409A1 (en) | Method for heating a metering valve in an SCR system for exhaust aftertreatment of an internal combustion engine | |
DE102012209538A1 (en) | Method and device for checking the functionality of hydraulic components in an exhaust aftertreatment system for a motor vehicle | |
DE102014003580A1 (en) | Cooling arrangement and method for cooling a metering device | |
DE102011015196B4 (en) | Heating for heating vehicle consumables and corresponding rail vehicle | |
DE102010039102A1 (en) | Supply device, internal combustion engine, generator unit, method for supplying an exhaust system of an internal combustion engine with a solution containing reducing agent and control device | |
WO2008061633A1 (en) | A solenoid valve which is heated via the magnet coil for a gas system, and method for operating the gas system | |
EP1708264A2 (en) | Cooling device for an electrical control device | |
DE102008029340A1 (en) | Cooling circuit arrangement for motor vehicle, has engine cooling circuit for cooling internal-combustion engine, in which engine heat transducer and engine coolant pump are arranged | |
DE102019217351A1 (en) | Valve arrangement | |
DE202013100932U1 (en) | Intercooler system with integrated heating device | |
DE102016215836A1 (en) | Apparatus and method for energy recovery | |
DE102007034314B4 (en) | Assembly and method for introducing a reducing agent into an exhaust pipe | |
DE102014226749A1 (en) | Method and apparatus for testing a heating system in an SCR exhaust aftertreatment system | |
DE102014211001A1 (en) | Method and device for monitoring a pressure sensor | |
DE102021107561A1 (en) | MOTOR VEHICLE AFTERTREATMENT SYSTEM WITH DOSER | |
DE102013209134A1 (en) | Method and device for detecting an armature stop of an electromechanical actuator | |
DE102021104051A1 (en) | REDUCING DIESEL EMISSION LIQUID (DEF) DEPOSIT IN AN EXHAUST SYSTEM FOR AN ENGINE | |
DE102013201776A1 (en) | Method and device for detecting a defect of an electromechanical actuator |