DE102018007094A1 - Device and method for thawing a reducing agent - Google Patents
Device and method for thawing a reducing agent Download PDFInfo
- Publication number
- DE102018007094A1 DE102018007094A1 DE102018007094.9A DE102018007094A DE102018007094A1 DE 102018007094 A1 DE102018007094 A1 DE 102018007094A1 DE 102018007094 A DE102018007094 A DE 102018007094A DE 102018007094 A1 DE102018007094 A1 DE 102018007094A1
- Authority
- DE
- Germany
- Prior art keywords
- tank
- reducing agent
- mechanical energy
- shut
- 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.)
- Withdrawn
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Classifications
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- 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]
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- 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
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- 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
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- 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
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- 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 Erfindung betrifft eine Vorrichtung (1) zum Auftauen eines Reduktionsmittels in einem Tank (2), umfassend mindestens ein Heizelement (3) zum Erwärmen des Reduktionsmittels,wobei zusätzlich eine Einheit (4) zur Einleitung mechanischer Energie in den Tank (2) vorgesehen ist, wobei die einleitbare mechanische Energie hinreichend groß ist um im Tank (2) befindliches eisförmiges Reduktionsmittel zu zerkleinern. Die Erfindung betrifft weiter ein Verfahren zum Auftauen eines Reduktionsmittels in einem Tank (2), wobei das Reduktionsmittel mittels mindestens eines Heizelements (3) erwärmt wird,wobei zusätzlich mechanische Energie in den Tank (2) eingeleitet wird, derart, dass im Tank (2) befindliches eisförmiges Reduktionsmittel zerkleinert wird.The invention relates to a device (1) for thawing a reducing agent in a tank (2), comprising at least one heating element (3) for heating the reducing agent, wherein additionally a unit (4) for introducing mechanical energy into the tank (2) is provided , wherein the input mechanical energy is sufficiently large to comminute in the tank (2) located eisförmiges reducing agent. The invention further relates to a method for thawing a reducing agent in a tank (2), wherein the reducing agent is heated by means of at least one heating element (3), wherein additional mechanical energy in the tank (2) is introduced, such that in the tank (2 ) is crushed ice-like reducing agent.
Description
Die Erfindung betrifft eine Vorrichtung und ein Verfahren zum Auftauen eines Reduktionsmittels.The invention relates to an apparatus and a method for thawing a reducing agent.
Es ist bekannt, bei Verbrennungskraftmaschinen, insbesondere Dieselmotoren, zur Abgasnachbehandlung ein Reduktionsmittel, beispielsweise eine Harnstofflösung einzusetzen, die in einem separaten Tank vorgehalten wird. Das Reduktionsmittel kann, insbesondere bei niedrigen Umgebungstemperaturen, im Tank in fester Form als Eisblock vorliegen. In diesem Zustand kann die Abgasnachbehandlung unmöglich oder erschwert sein. Es ist bekannt, Heizelemente vorzusehen, um das Reduktionsmittel zu verflüssigen. Es kann jedoch wünschenswert sein, das Reduktionsmittel noch schneller zu verflüssigen.In internal combustion engines, in particular diesel engines, it is known to use a reducing agent, for example a urea solution, for exhaust aftertreatment, which is kept in a separate tank. The reducing agent may, especially at low ambient temperatures, be present in the tank in solid form as an ice block. In this state, the exhaust aftertreatment can be impossible or difficult. It is known to provide heating elements to liquefy the reducing agent. However, it may be desirable to liquefy the reducing agent even faster.
Aus der
Der Erfindung liegt die Aufgabe zu Grunde, eine verbesserte Vorrichtung und ein verbessertes Verfahren zum Auftauen eines Reduktionsmittels anzugeben.The invention is based on the object to provide an improved device and an improved method for thawing a reducing agent.
Die Aufgabe wird erfindungsgemäß gelöst durch eine Vorrichtung mit den Merkmalen des Anspruchs 1 und durch ein Verfahren mit den Merkmalen des Anspruchs 8.The object is achieved by a device having the features of
Vorteilhafte Ausgestaltungen der Erfindung sind Gegenstand der Unteransprüche.Advantageous embodiments of the invention are the subject of the dependent claims.
Eine erfindungsgemäße Vorrichtung zum Auftauen eines Reduktionsmittels, insbesondere einer Harnstofflösung, in einem Tank umfasst mindestens ein Heizelement zum Erwärmen des Reduktionsmittels,
wobei zusätzlich eine Einheit zur Einleitung mechanischer Energie in den Tank vorgesehen ist, wobei die einleitbare mechanische Energie hinreichend groß ist um im Tank befindliches eisförmiges Reduktionsmittel zu zerkleinern.A device according to the invention for thawing a reducing agent, in particular a urea solution, in a tank comprises at least one heating element for heating the reducing agent,
wherein in addition a unit for introducing mechanical energy is provided in the tank, wherein the input mechanical energy is sufficiently large to crush in-tank ice-shaped reducing agent.
Bei einem erfindungsgemäßen Verfahren zum Auftauen eines Reduktionsmittels, insbesondere einer Harnstofflösung, in einem Tank wird das Reduktionsmittel mittels mindestens eines Heizelements erwärmt,
wobei zusätzlich mechanische Energie in den Tank eingeleitet wird, derart, dass im Tank befindliches eisförmiges Reduktionsmittel zerkleinert wird.In a method according to the invention for thawing a reducing agent, in particular a urea solution, in a tank, the reducing agent is heated by means of at least one heating element,
wherein additional mechanical energy is introduced into the tank, such that in the tank located Eisförmiges reducing agent is crushed.
Auf diese Weise wird ein großer Eisblock aus gefrorenem Reduktionsmittel in kleine Stücke geteilt, so dass die Oberfläche zur Einwirkung der Wärme aus dem Heizelement vergrößert wird.In this way, a large block of frozen reductant ice is divided into small pieces so that the surface area is increased to exert heat from the heating element.
Die Vorrichtung und das Verfahren finden beispielsweise Verwendung bei der Abgasnachbehandlung einer Verbrennungskraftmaschine, insbesondere eines Dieselmotors, beispielsweise in einem Fahrzeug.The device and the method are used, for example, in the exhaust gas aftertreatment of an internal combustion engine, in particular a diesel engine, for example in a vehicle.
Ausführungsbeispiele der Erfindung werden im Folgenden anhand von Zeichnungen näher erläutert.Embodiments of the invention are explained in more detail below with reference to drawings.
Dabei zeigen:
-
1 eine schematische Ansicht einer ersten Ausführungsform einer Vorrichtung zum Auftauen eines Reduktionsmittels in einem Tank, und -
2 eine schematische Ansicht einer zweiten Ausführungsform einer Vorrichtung zum Auftauen eines Reduktionsmittels in einem Tank.
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1 a schematic view of a first embodiment of an apparatus for thawing a reducing agent in a tank, and -
2 a schematic view of a second embodiment of an apparatus for thawing a reducing agent in a tank.
Einander entsprechende Teile sind in allen Figuren mit den gleichen Bezugszeichen versehen.Corresponding parts are provided in all figures with the same reference numerals.
Die Vorrichtung
Die Vorrichtung
Mittels der Pumpe
In einer Ausführungsform kann das Absperrventil
In einer alternativen Ausführungsform kann die Einheit
Die Einheit
Das Heizelement
BezugszeichenlisteLIST OF REFERENCE NUMBERS
- 11
- Vorrichtung zum Auftauen eines ReduktionsmittelsDevice for thawing a reducing agent
- 22
- Tanktank
- 33
- Heizelementheating element
- 44
- Einheit zur Einleitung mechanischer EnergieUnit for the introduction of mechanical energy
- 55
- Unwuchtunbalance
- 66
- Pumpepump
- 77
- Absperrventilshut-off valve
ZITATE ENTHALTEN IN DER BESCHREIBUNG QUOTES 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 of the documents listed by the applicant has been 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 PatentliteraturCited patent literature
- DE 102013101412 A1 [0003]DE 102013101412 A1 [0003]
Claims (10)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102018007094.9A DE102018007094A1 (en) | 2018-09-07 | 2018-09-07 | Device and method for thawing a reducing agent |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102018007094.9A DE102018007094A1 (en) | 2018-09-07 | 2018-09-07 | Device and method for thawing a reducing agent |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102018007094A1 true DE102018007094A1 (en) | 2019-04-25 |
Family
ID=65996308
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102018007094.9A Withdrawn DE102018007094A1 (en) | 2018-09-07 | 2018-09-07 | Device and method for thawing a reducing agent |
Country Status (1)
Country | Link |
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DE (1) | DE102018007094A1 (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102013101412A1 (en) | 2013-02-13 | 2014-08-14 | Emitec Gesellschaft Für Emissionstechnologie Mbh | Device for providing a liquid additive |
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2018
- 2018-09-07 DE DE102018007094.9A patent/DE102018007094A1/en not_active Withdrawn
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102013101412A1 (en) | 2013-02-13 | 2014-08-14 | Emitec Gesellschaft Für Emissionstechnologie Mbh | Device for providing a liquid additive |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
R230 | Request for early publication | ||
R081 | Change of applicant/patentee |
Owner name: DAIMLER AG, DE Free format text: FORMER OWNER: DAIMLER AG, 70327 STUTTGART, DE |
|
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |