EP2855870A1 - Contenant comprenant un dispositif de chauffage pour un réservoir destiné au stockage d'un additif liquide - Google Patents

Contenant comprenant un dispositif de chauffage pour un réservoir destiné au stockage d'un additif liquide

Info

Publication number
EP2855870A1
EP2855870A1 EP13726159.0A EP13726159A EP2855870A1 EP 2855870 A1 EP2855870 A1 EP 2855870A1 EP 13726159 A EP13726159 A EP 13726159A EP 2855870 A1 EP2855870 A1 EP 2855870A1
Authority
EP
European Patent Office
Prior art keywords
container
housing
tank
liquid additive
wall
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Withdrawn
Application number
EP13726159.0A
Other languages
German (de)
English (en)
Inventor
Rolf BRÜCK
Jan Hodgson
Sven Schepers
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Continental Automotive GmbH
Original Assignee
Emitec Gesellschaft fuer Emissionstechnologie mbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from DE201210104551 external-priority patent/DE102012104551A1/de
Priority claimed from DE201210107208 external-priority patent/DE102012107208A1/de
Application filed by Emitec Gesellschaft fuer Emissionstechnologie mbH filed Critical Emitec Gesellschaft fuer Emissionstechnologie mbH
Publication of EP2855870A1 publication Critical patent/EP2855870A1/fr
Withdrawn legal-status Critical Current

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
    • F01N3/2006—Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating
    • F01N3/2013—Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating using electric or magnetic heating means
    • 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
    • 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]
    • F01N3/208—Control of selective catalytic reduction [SCR], e.g. dosing of reducing agent
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/0072—Special adaptations
    • F24H1/009—Special adaptations for vehicle systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/18—Water-storage heaters
    • F24H1/20—Water-storage heaters with immersed heating elements, e.g. electric elements or furnace tubes
    • F24H1/201—Water-storage heaters with immersed heating elements, e.g. electric elements or furnace tubes using electric energy supply
    • 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
    • F01N2610/1406—Storage means for substances, e.g. tanks or reservoirs
    • 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
    • F01N2610/1433—Pumps
    • 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
    • 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

Definitions

  • the invention relates to a container for a tank for storing a liquid additive, comprising a housing with a heating device.
  • a container is used in particular for receiving functional components for conveying and / or metering and / or monitoring of the liquid additive on the way out of the tank through the container towards a consumer.
  • the invention finds particular application in a motor vehicle provided with a tank for storing a liquid additive, the container being integrated therein into the tank.
  • an oxidizing agent for example fuel or hydrocarbon
  • This additive can be used to react directly with constituents of the exhaust gas and thus convert pollutants.
  • this oxidizing agent is used to convert environmental conditions in the exhaust system in a desired, suitable for the implementation of pollutants state.
  • fuel or hydrocarbon can be supplied to an oxidation catalyst, wherein due to an exothermic reaction in the oxidation catalyst, the temperature of the exhaust gas in the exhaust system can be significantly increased. This is used in particular for the regeneration of a diesel particulate filter.
  • a reducing agent to the exhaust gas.
  • liquid additive such as urea-water solution
  • heating systems have been proposed to accomplish a rapid thawing of the liquid additive in the tank and / or a connected delivery line.
  • the desired exhaust gas purification method should already be available soon after engine start of a motor vehicle and / or damage to the components required for storage, delivery and / or addition of the liquid additive should be avoided.
  • liquid heaters eg, heat exchangers that interact with the engine cooling system
  • electric heaters eg. heat exchangers that interact with the engine cooling system
  • electric heaters eg. heat exchangers that interact with the engine cooling system
  • radiant heaters e.g, electric heaters, radiant heaters, and combinations thereof have been proposed in this technical field.
  • the fastest possible and possibly even as uniform heating in the container could not be achieved satisfactorily.
  • the proposed systems for heating the container are technically complex, cost-intensive and / or difficult to control or to control.
  • a container for a tank for storing a liquid additive is to be specified, which allows a cost-effective, simple and efficient heating. Furthermore, a particularly advantageous and space-saving integration of a heating system in a motor vehicle to be proposed.
  • the container for a tank for storing a liquid additive comprises a housing with a heating device, wherein at least one drivable apparatus for promoting convection is provided in the housing.
  • the container is in particular designed so that it is at least partially and preferably almost completely contained in a tank for storing the liquid additive. tivs can be recorded.
  • the tank volume should be reduced by the integration of the container into the tank, for example, a maximum of 20%, preferably a maximum of 10%.
  • the tank is in particular a tank for storing a reducing agent, in particular urea-water solution. However, this could also be used for oxidants and other liquid additives.
  • the container can be made of plastic. In any case, the tank should be durable and designed for permanent storage of the liquid additive.
  • the housing can be made in one or more parts. It is possible that, for example, a pot-shaped housing and an additional container bottom are provided, which are detachably or non-detachably connected to one another.
  • the housing may be made of plastic and / or metal. In any case, in the region of the housing that is in contact with the interior of the tank, the housing should be resistant to the liquid additive.
  • the container further comprises at least one heating device, which is arranged in particular in the housing or the container space formed by the housing. In principle, the heating device can be any of the types of heating devices mentioned at the beginning. In this case, it is preferred that the heating device occupy only a small portion of the container space itself, for example less than 20% of the container space or even less than 10% of the container space.
  • a drivable convection conveying apparatus is provided in the housing.
  • the drivable apparatus has the function of distributing the heat generated in the housing by convection by means of convection. It is preferred that the drivable apparatus itself is not in direct contact with the heating device, but distributed by influencing the air flow inside the container, the heat emitted by the heater by means of convection as evenly as possible.
  • a convection is understood to mean in particular (the targeted) movement of air in the container. Air is therefore moved by means of the drivable apparatus towards the heating device, so that it is heated on contact with the heating device. can. The heated air then flows, also motivated by the drivable apparatus and / or flow guide elements, into other (predetermined) areas of the container clearance. In this case, the heated air comes into contact with the housing and / or positioned in the housing components, so that it can be done quickly warming up here.
  • the apparatus can be activated and deactivated as needed.
  • the apparatus is designed and / or set up so that it can be driven (and moved) at predetermined or desired times. Therefore, the phases in which the convection is promoted in the housing, can be specified precisely.
  • the problems described above can be at least partially alleviated.
  • a rapid heating of the container and / or the surrounding area of the container in the tank can be achieved.
  • the apparatus of the container may be used (in addition) for the effective cooling of at least one component in the container.
  • a component which may require cooling for example, is a pump for conveying and / or metering of liquid additive. During operation, such a pump can become very hot. This heat can be removed with the help of the apparatus of the pump and be derived for example via the housing in the liquid additive in a tank.
  • At least one inherently closed flow path exists in the housing, along which the apparatus can generate a circulating air flow in particular.
  • the circulating air flow is the convection promoted by the apparatus.
  • the flow path is formed by free spaces within the housing and possibly by corresponding flow guide elements. Free spaces are areas in the housing in which no components or functional components are arranged. These therefore provide space for the flow path.
  • the flow path preferably leads to the heating device and to the areas to be heated (in particular the functional components) in the container or in the housing.
  • the flow path preferably leads along a wall of the housing.
  • the housing may be designed and / or used at least in sections as a flow guiding element.
  • the wall of the housing is preferably cylindrically shaped at least in sections and the flow is continuously directed onto a path along the wall by the curvature of the cylindrical shape of the wall.
  • there are two closed flow paths in the housing each extending along a portion of the housing wall.
  • At least one first deflection point is provided on the housing wall, at which the flow paths are directed away from the housing wall into an inner region of the housing. In the inner region of the housing, a heat exchange between the air flow and the functional components takes place.
  • the first deflection point and the second deflection point are each formed by means of a first deflection means or by means of a second deflection means.
  • the deflecting divert the flow at the deflection.
  • the deflection means are flow guides.
  • the flow paths extend at least along an apparatus which is designed to drive an air flow along the flow paths or to promote convection along the flow paths.
  • the flow paths in the region along the housing wall and / or in the inner region of the housing along the heater so that a heat exchange between an air flow along the flow paths and the heater can take place.
  • the device has a housing which is at least partially double-walled (with two walls).
  • a housing which is at least partially double-walled (with two walls).
  • a gap-shaped intermediate space is provided between the outer wall and the inner wall, through which an air flow can flow.
  • the outer wall and the inner wall are preferably spaced apart by at least one spacer element.
  • the spacer elements may also promote heat transfer between the inner wall and the outer wall and the airflow.
  • the spacer elements can act as baffle elements, to which the air flow in the intermediate space meets and to which the air flow therefore has a particularly good heat transfer.
  • the apparatus is preferably arranged to urge the airflow generated by the apparatus into the space through at least one inflow opening in the inner wall.
  • a flow path preferably proceeds from the apparatus through the at least one inflow opening into the intermediate space and then, starting from the intermediate space through at least one outflow opening, back into an interior space of the housing.
  • This interior is bounded by the inner wall of the housing.
  • a heater may be disposed between the apparatus and the inflow port of the inner wall of the housing such that the air delivered by the apparatus immediately after being heated by the heater enters the gap and liquid additive in the tank housing the housing surrounds, warmed up.
  • a plurality of heating devices and apparatuses for promoting convection in a described container wherein these each can form partial or independent flows along different flow paths.
  • These different flow paths can each be set up to selectively flow to certain areas and / or functional components within the container or the housing in order to heat these areas and / or functional components particularly quickly.
  • the flow rate of the air along the flow paths may be adjusted by suitable design of the space available for the flow paths within the housing. The larger the available free cross-section, the lower the flow velocity.
  • the functional components and flow paths are preferably arranged in the housing so that the heat energy generated by the heater (practically) is completely released to the air flow, and the air flow in turn (virtually) the heat energy to thejanskomp- components and the housing emits.
  • a container wherein the housing has an inner wall and an outer wall, which form a gap, in which at least one partially closed flow path for a convection flow is formed.
  • Such a design of flow paths within the housing enables a particularly effective transfer of the heat emanating from the heating device to the functional components and to the liquid additive in the tank.
  • the at least one drivable apparatus comprises a blower and a blower motor connected thereto.
  • the drivable apparatus can be provided particularly cost-effective and technically simple.
  • the fan motor is activated at the desired times via a control unit and (later) deactivated again.
  • the fan may comprise a type of rotor with which the air in the container is moved.
  • the fan may be oriented such that the air moved therefrom is moved toward the heater.
  • several blowers can be provided with one or one blower motor each.
  • the heating device in the housing has a single, electrically operable heating element.
  • An electrically operable heating element can also be activated and deactivated at predetermined times. This takes place, for example, on the basis of the ohmic resistance heating.
  • a known and here particularly preferably to be used electrically operable heating elements is a so-called PTC heating element (PTC: Positive Temperature Coefficient). The embodiments of such PTC heating elements have been known for a long time, so that additional information is readily available to those skilled in the art.
  • a container is considered to be advantageous in which the heating device protrudes at least partially completely freely into the housing.
  • the heating device can be designed, for example, in the manner of an at least partially freestanding flange, an at least partially freestanding column or the like. It is obvious that such a heating element is connected at least to the container bottom and / or the housing in order to withstand a safe positioning of the heating device even under high dynamic load (such as during driving in a motor vehicle). Likewise, power lines, control lines and the like are realized via this contact.
  • the at least partially However, completely free in the housing projecting design of the heating element allows the moving of the drivable apparatus toward the heater air over a large area flow the heating element and / or even flow around.
  • the heater As a result, an intensive contact of the air in the container is made possible with the heater, so that they can absorb heat quickly and then distributed.
  • at least 50% of the peripheral surface of the heater is free of internals, so that a direct contact is made possible to the ambient air in the container space.
  • This proportion may preferably also be at least 60% or even at least 80%.
  • the container is used in particular for receiving a delivery module and / or dosing module for the liquid additive.
  • the delivery module or dosing module can remove liquid additive from the tank at predetermined times and / or in predetermined amounts and lead it out of the tank via the container.
  • a delivery line for example a section of the delivery line via which the liquid additive is conveyed from the tank to a pump
  • a drain for example a part of the delivery line, with which the liquid exhaust gas is led out of the container by a pump
  • a return line eg a part of the delivery line, with which liquid additive in the container is led back into the tank
  • a pump for example a part of the delivery line, with which liquid additive in the container is led back into the tank
  • a filter Sensor for example a section of the delivery line via which the liquid additive is conveyed from the tank to a pump
  • a drain for example a part of the delivery line, with which the liquid exhaust gas is led out of the container by a pump
  • a return line eg a part of the delivery line, with which liquid additive in the container is led back into the tank
  • the container is designed and arranged such that an air flow is generated by means of the drivable apparatus, which initially leads past the heating device and subsequently flows through at least a majority of the functional components in the container, so that they can at least partially absorb the heat entrained with the air flow , Consequently, these functional components are heated by means of convection in the housing.
  • the housing is at least partially made of plastic. The use of a plastic housing has the advantage that the manufacturing costs can be reduced and weight can be saved. In the case of the container proposed here, it should also be considered that the distribution of heat within the container due to convection no longer makes it imperative that many thermal bridges are formed for heat conduction within the container.
  • the housing has at least one inner rib.
  • a plurality of ribs may be provided.
  • the rib is designed in particular as a (passive) Bankrippe and thus serves in particular the intensive contacting of the heated air.
  • the rib may be adapted to receive heat by convection and possibly pass this heat into other areas of the housing.
  • the rib is projecting from the housing inner wall, that is, in particular projecting into the free space of the container.
  • the rib could also be referred to as a wing, web, projection or the like, wherein the surface is many times larger than the cross section. Orientation, shape and / or material of the rib can be adapted for specific purposes.
  • the ribs are aligned in accordance with the flow direction of the air in the housing.
  • the ribs should run in particular parallel to the flow direction, so that on the one hand a particularly good heat transfer between the ribs and the air is achieved, and on the other hand, the flow resistance caused by the ribs is as low as possible.
  • the ribs should in particular be aligned parallel to the direction of flow of the air or the convection. This can be achieved, for example, by ribs on the housing, which extend at least in sections in a circular manner along the inside of the (cylindrical) housing.
  • the ribs increase the (inner) surface of the housing and thus facilitate the heat transfer from the inside to the outside.
  • the ribs can be made of a material with particularly good thermal conductivity.
  • the ribs are made of a different material than the other housing.
  • the ribs extend through the housing and lead to an outside of the housing in a tank for the liquid additive, wherein the ribs have an increased thermal conductivity. Such fins can transfer heat particularly well into the liquid additive in the tank.
  • a motor vehicle which has a tank for storing a liquid additive.
  • the tank has a tank wall which forms or limits a tank volume.
  • the motor vehicle has an exhaust system with an adding device for the liquid additive.
  • a container proposed here is inserted into the tank wall, with a plurality of functional components being provided therein for conveying the liquid additive out of the tank, through the container to the adding device.
  • the motor vehicle is set up in particular for carrying out the initially described method for exhaust aftertreatment.
  • the proposed system solution with a cost-effective and efficient heating for the container, the functional components and / or the tank is particularly noteworthy here.
  • FIG. 1 is a partial perspective view of a container
  • FIG. 2 shows a schematic sectional view of a tank with a container
  • FIG. 3 shows a schematic view of a motor vehicle with tank and exhaust system
  • FIG. 4 shows a schematic section through an embodiment variant of a housing for a container
  • FIG. 5 shows a schematic section through a further embodiment of a housing for a container
  • FIG. 6 shows a schematic section through yet a further embodiment variant of a housing for a container
  • FIG. 7 shows a schematic section through yet a further embodiment variant of a housing for a container.
  • Fig. 1 shows a container 1, for example, in a tank for storing the reducing agent, such as urea-water solution, can be used.
  • the container 1 in this case comprises a pot-like, round in cross-section housing 4, which forms the peripheral surface and the lid.
  • Below the container 1 is closed by a container bottom 20, wherein the container bottom 20 may, for example, be designed as a separate component which is detachably or permanently connected to the rest lent (cup-shaped) housing 4.
  • the so-called container space of various functional components 10 for conveying the liquid additive from the tank through the container 1 is partially filled.
  • These functional components 10 are here shown by dashed lines, to indicate that they can optionally be arranged individually or in any meaningful combination with each other in the container clearance 25.
  • a delivery module or dosing module is indicated here by way of example.
  • the liquid additive is removed via an inlet 17 from the tank. This can be done by a corresponding suction of the connected thereto pump 21.
  • the delivery line 16 continues up to a valve 29. From this valve 29 can be predetermined as needed, whether the liquid additive, which is now under pressure, on to a sequence 18, for example.
  • a control unit 24 may be provided which regulates the operation of the pump, the valve and / or other functional components via signal lines indicated here.
  • This control unit 24 can also perform this operation depending on one or more sensors 23.
  • a sensor 23 for example, a pressure sensor for the pressure of the liquid additive in the delivery line 16 and / or a temperature sensor for determining the temperature of the liquid additive in the delivery line 16 and / or for determining the temperature of a functional component or in the container 25 free space be used.
  • the electrically operable heating element 9 can also be activated as required by the control unit 24 and deactivated in this embodiment variant.
  • the electrically operable heating element 9 predominantly protrudes freely into the housing 4, so that here an air flow (indicated by the arrows) can be brought into good contact with the electrically operable heating element 9.
  • a drivable apparatus 6 is further provided, which is exemplified here with a blower 7 and an associated blower motor 8.
  • the control unit 24 it is possible for the control unit 24 to actuate or immobilize the blower 7 via the blower motor 8 as required or at predetermined times.
  • the air in the container free space 25 is moved towards the heating element 9, which is indicated by a vertically patterned arrow.
  • the air is heated and can then be fed to remote areas of the housing 4 and / or one or more functional components 10.
  • Strömungsleitieri 28 (baffles or the like) may be provided to realize a directional distribution or promotion of convection in the container 1.
  • the air flow generated by the drivable apparatus 6 can be divided as desired and forwarded in different directions.
  • the heated air flow is also shown by arrows, which has a horizontal pattern.
  • the tank 2 schematically shows a tank 2 for storing the liquid additive 3.
  • the tank 2 is formed by a tank wall 13 which, for example, is made of plastic. is done.
  • the tank wall 13 further defines the so-called tank volume 12.
  • the tank wall 13 further has an opening 30, here in the region of the bottom, where the container 1 is inserted there and fluid-tightly connected to the tank wall 13.
  • a (cylindrical) filter 22 is provided around the container 1, wherein the functional components 10 remove the additive 3 in a region of the tank 2 in which (practically only) filtered additive 3 is present.
  • the filter 22 can also be integrated into the container or the delivery line located therein.
  • FIG. 2 also shows that a plurality of heating devices 5 can be arranged in the container 1. These are here, for example, flatly positioned in the manner of strips on the inside of the housing and / or a functional component. It is further exemplified here that a single drivable apparatus 6 is arranged and arranged in the container so that it causes an air flow over a plurality of heating devices 5.
  • Fig. 2 Schematically illustrated in Fig. 2 are also a plurality of ribs 33 in the manner of a (passive) Walkerrippe, which serves the intensive contacting of the heated air.
  • the ribs 33 are arranged, for example, distributed on the inside of the housing 4, in particular concentrated at the point to which the air heated by the fan 7 is directed.
  • FIG. 3 now shows a motor vehicle 11, for example a passenger car or a lorry, wherein the exhaust gas generated by an internal combustion engine 27, in particular a diesel engine, is passed through an exhaust system 14 along an exhaust gas flow direction 31.
  • the exhaust gas is added (finely divided or with a delivery gas) to the liquid additive.
  • this mixture is a suitable exhaust aftertreatment unit (such as an SCR catalyst) 26 supplied. This can be carried out, for example, in the manner of a coated honeycomb body. This can be provided in particular with a suitable coating.
  • the additive-waste gas mixture flows through the catalyst 26, the desired chemical and / or thermal processes can be motivated.
  • the liquid additive is stored in a tank 2 and metered by means of the functional component (s) provided in the container 1 and via a suitable delivery line 16 to the adding device 15.
  • the amount and / or the time of addition may be predetermined by a controller 32, wherein in particular operating parameters of the internal combustion engine 27, the exhaust system 14 and / or the conveyor system (tank, container, conveyor line, adding device, etc.) take place.
  • the metering can take place via the functional components of the container 1 and / or the adding device 15.
  • The. Fig. 4 shows a horizontal section through a housing 4 for a container 1. Schematically shown is the apparatus 6 in the housing 4, with which the convection in the housing 4 can be promoted. According to the convection, air flows from the operation of the apparatus 6 in the housing 4, which circulate in accordance with the closed flow paths 41. These flow paths 41 extend at least in sections along a wall of the housing 4. The air flow is thus in direct heat exchange with the housing 4.
  • a first deflection means 42 is arranged, which directs the flow paths 41 away from the housing 4 in an inner space 44 of the housing 4 (first deflection point 45).
  • functional components can be arranged.
  • the flow paths 41 extend from the first deflection means 42 through the inner space 44 and are then guided back to the housing 4 with the second deflection means 43 (second deflection point 46), so that the flow paths 41 result in self-contained paths. Run in the area of the interior 44 the flow paths 41 past an apparatus 6, which promotes the convention or the air flow or drives.
  • the apparatus 6 comprises a fan 7 and a fan motor 8, which drives the fan 7.
  • the flow paths 41 extend in the interior 44 along a heating device 5.
  • the heating device 5 may comprise an electrically heatable heating element 9 and additional heating ribs 34, via which the heat of the heating element 9 is discharged.
  • the heating device 5 is preferably designed such that a good heat transfer to the air flow and at the same time the flow of the heater 5 as low as possible flow resistance occurs.
  • the apparatus 6 presses the air flow directly onto the heating device 5, without a deflection of the air flow being provided between them. This improves the heat transfer.
  • FIG. 5 shows a horizontal section through a further embodiment variant of a housing 4 for a container 1.
  • two flow paths 41 are provided in the housing 4, which are provided with the aid of a first deflection means 42 and a second deflection means 43 corresponding to those in FIG 4 flow paths are guided through the housing 4.
  • two apparatuses 6 are provided according to FIG. 5, each comprising a fan 7 and a fan motor 8 and are arranged on the portions of the flow paths 41 on the wall of the housing 4.
  • the heating device 5 is designed as a baffle element, on which the apparatuses 6 press the air flow.
  • the heating device 5 has an electrically operable heating element 9 and heating fins 34, which distribute the heat produced by the electrically operable heating element 9.
  • At least the first deflection means 42 or the second deflection means 43 may be designed as a structural unit together with the heating device 5.
  • FIG. 6 shows a vertical schematic section through a housing 4 for a container 1.
  • This housing 4 has on its inside (for example substantially horizontal and / or helical running) ribs 33, which are the Limit flow paths 41 which extend through the housing 4 along the wall of the housing 4.
  • These ribs 33 align the flow paths 41 along the wall of the housing 4.
  • the ribs 33 provide improved heat transfer between the air circulating along the flow paths 41 and the housing 4.
  • The. Fig. 7 shows a horizontal section through another embodiment of a housing 4 for a container 1.
  • the housing 4 consists of an inner wall 38 and an outer wall 39.
  • the outer wall 39 closes the housing 4 fluid-tight and stands with its outside in contact with the liquid additive (such as urea-water solution) when the housing 4 is inserted into a tank.
  • the inner wall 38 and the outer wall 39 are spaced apart so that there is a gap 40 between the inner wall 38 and the outer wall 39.
  • Spacer elements 35 can be provided which position the inner wall 38 and the outer wall 39 relative to one another and, if necessary, also serve to form flow paths.
  • the inner wall 38 may be partially broken so that permeable connections from the gap 40 into the interior 44 of the housing 4 exist.
  • an apparatus 6 with a fan 7 and a fan motor 8 is arranged in the housing 4.
  • This apparatus 6 is adapted to suck in an air flow from the inner space 44 and to lead into the intermediate space 40.
  • the inner wall 38 has an inflow opening 36.
  • the air flow is guided starting from the apparatus 6 through the inflow opening 36 and the intermediate space 40 and leaves the intermediate space 40 again at at least one outflow opening 37 in the inner wall 38.
  • the air flow then returns to the apparatus 6 a flow path 41 formed by the housing.
  • a heating device 5 is arranged at which the air flow flows according to the flow path 41 along.
  • the heating device 5 may comprise an electrically operable heating element 9 and heating fins 34, which heat the heat produced by the electrically operable heating element 9 effectively pass on to the airflow.
  • ribs 33 are provided, via which the heat can be transferred to the liquid additive in a tank.
  • the embodiment variants shown here show preferred combinations of technical features, but they do not necessarily have to be combined with each other. Unless explicitly stated above, the technical features can be extracted from a figure and easily combined with other concepts / variants for the skilled person. This is particularly true in terms of design / arrangement / number of apparatus, flow paths, housing and heat transport measures (ribs, etc.).
  • the invention solves the problem initially posed to solve the problems described with reference to the prior art, at least partially.
  • a container for a tank for storing a liquid additive such as urea-water solution has been specified, which allows cost-effective, simple and efficient heating.
  • a particularly advantageous and space-saving integration of a heating system was shown in a motor vehicle.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Exhaust Gas After Treatment (AREA)

Abstract

L'invention concerne un contenant (1) pour un réservoir (2) destiné au stockage d'un additif liquide (3), comprenant un boîtier (4) comportant un dispositif de chauffage (5), au moins un appareil (6) en mesure d'être entraîné étant prévu pour assurer la convection dans le boîtier (4). L'invention concerne notamment aussi un véhicule (11) présentant un réservoir (2) destiné au stockage d'un additif liquide (3) et un système d'échappement (14) qui présente un dispositif d'adjonction (15) destiné à l'additif liquide (3), un tel contenant (1) étant inséré dans la paroi (13) du réservoir, et une pluralité d'éléments fonctionnels (10) y étant prévus pour assurer l'acheminement de l'additif liquide (3) du réservoir (2) au dispositif d'adjonction (15) à travers le contenant (1).
EP13726159.0A 2012-05-25 2013-05-24 Contenant comprenant un dispositif de chauffage pour un réservoir destiné au stockage d'un additif liquide Withdrawn EP2855870A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE201210104551 DE102012104551A1 (de) 2012-05-25 2012-05-25 Behälter mit einer Heizvorrichtung für einen Tank zur Speicherung eines flüssigen Additivs
DE201210107208 DE102012107208A1 (de) 2012-08-07 2012-08-07 Behälter mit einer Heizvorrichtung für einen Tank zur Speicherung eines flüssigen Additivs
PCT/EP2013/060767 WO2013174986A1 (fr) 2012-05-25 2013-05-24 Contenant comprenant un dispositif de chauffage pour un réservoir destiné au stockage d'un additif liquide

Publications (1)

Publication Number Publication Date
EP2855870A1 true EP2855870A1 (fr) 2015-04-08

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EP13726159.0A Withdrawn EP2855870A1 (fr) 2012-05-25 2013-05-24 Contenant comprenant un dispositif de chauffage pour un réservoir destiné au stockage d'un additif liquide

Country Status (4)

Country Link
US (1) US9476336B2 (fr)
EP (1) EP2855870A1 (fr)
JP (1) JP2015520823A (fr)
WO (1) WO2013174986A1 (fr)

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US9828743B2 (en) 2014-08-25 2017-11-28 Komatsu Ltd. Bulldozer
JP6005192B2 (ja) * 2015-02-18 2016-10-12 株式会社小松製作所 ブルドーザ
ITUB20155359A1 (it) * 2015-11-06 2017-05-06 Eltek Spa Componente di serbatoio, in particolare per sistemi di trattamento di gas di scarico di motori a combustione interna
WO2017148461A1 (fr) * 2016-03-04 2017-09-08 Gentherm Gmbh Dispositif de dégivrage pour un contenant à fluide
DE102017114333A1 (de) * 2017-06-28 2019-01-03 Kautex Textron Gmbh & Co. Kg Betriebsflüssigkeitstank
FR3075701B1 (fr) * 2017-12-22 2019-12-13 Plastic Omnium Advanced Innovation And Research Systeme de stockage de liquide pour vehicule

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JP3570232B2 (ja) 1998-08-21 2004-09-29 トヨタ自動車株式会社 蒸発燃料処理装置
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Also Published As

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WO2013174986A1 (fr) 2013-11-28
JP2015520823A (ja) 2015-07-23
US20150075141A1 (en) 2015-03-19
US9476336B2 (en) 2016-10-25

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