EP2567079A2 - Fluid reservoir having a heating reserve bowl - Google Patents

Fluid reservoir having a heating reserve bowl

Info

Publication number
EP2567079A2
EP2567079A2 EP10851032A EP10851032A EP2567079A2 EP 2567079 A2 EP2567079 A2 EP 2567079A2 EP 10851032 A EP10851032 A EP 10851032A EP 10851032 A EP10851032 A EP 10851032A EP 2567079 A2 EP2567079 A2 EP 2567079A2
Authority
EP
European Patent Office
Prior art keywords
bowl
reducing agent
heating element
fluid
reservoir
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Withdrawn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
EP10851032A
Other languages
German (de)
French (fr)
Inventor
Rodolphe Emaille
Philippe Chaffraix
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.)
Akwel SA
Original Assignee
MGI Coutier SA
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
Application filed by MGI Coutier SA filed Critical MGI Coutier SA
Publication of EP2567079A2 publication Critical patent/EP2567079A2/en
Withdrawn legal-status Critical Current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
    • F01N3/206—Adding periodically or continuously substances to exhaust gases for promoting purification, e.g. catalytic material in liquid form, NOx reducing agents
    • 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]
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K13/00—Arrangement in connection with combustion air intake or gas exhaust of propulsion units
    • B60K13/04—Arrangement in connection with combustion air intake or gas exhaust of propulsion units concerning exhaust
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
    • B67D7/00—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes
    • B67D7/06—Details or accessories
    • B67D7/80—Arrangements of heating or cooling devices for liquids to be transferred
    • B67D7/82—Heating only
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
    • B60K15/03—Fuel tanks
    • B60K2015/03328—Arrangements or special measures related to fuel tanks or fuel handling
    • B60K2015/03427—Arrangements or special measures related to fuel tanks or fuel handling for heating fuel, e.g. to avoiding 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
    • F01N2610/10—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
    • 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 present invention relates to a fluid reservoir, and more particularly to a reservoir adapted for a fluid capable of freezing or whose viscosity varies very strongly depending on the temperature, the reservoir being equipped for this purpose with an integrated electric heating element, suitable for at least partially thaw the fluid contained in the reservoir.
  • This invention is applicable, inter alia, to a reducing agent reservoir, in particular urea reducing agent, which can be used on a heat engine vehicle for the purposes of depollution. More particularly, the invention relates to such a tank which is provided with a heating reserve bowl, in which is drawn the fluid such as reducing agent, contained in the tank and taken for its use.
  • motor vehicles must have additional depollution devices which are more and more complex, the depollution chemistry requiring either catalysts or oxidizing or reducing agents which are added, in particular in the exhaust line, to clean up.
  • the dosage of urea must be adjusted to the needs created by the emissions of nitrogen oxides, generated by the engine.
  • the urea is stored in a tank, put under pressure by a pump and distributed by an electromagnetic injector, the pump and the injector dosing the amount of urea taken from the tank and sent into the exhaust line, in connection with the operation of the engine so with the emissions of nitrogen oxides passing through the exhaust line.
  • a first type of solution is to make a reducing agent reservoir provided with an integrated electric heating element, able to thaw at least partially the reducing agent.
  • Another requirement to be taken into account is to keep the tapping system operating in tilt and slope conditions, even with an almost empty tank, without defusing the system.
  • the present invention aims to provide a simple solution to the problems described above.
  • the subject of the invention is a fluid reservoir, for example a reducing agent reservoir, in particular a urea-based agent, that can be used on a motor vehicle with a heat engine for the purposes of depollution, the tank being equipped with an integrated electric heating element, able to thaw at least partially the fluid such as reducing agent contained in the tank, this tank being characterized in that the heating element is placed inside a cavity delimited by a bowl, itself placed inside the tank, said cavity communicating with the internal volume of the reservoir by at least one valve, while a fluid suction pipe as a reducing agent dips into the cavity defined by the bowl, the starting point of the suction pipe being located near the heating element.
  • a fluid reservoir for example a reducing agent reservoir, in particular a urea-based agent, that can be used on a motor vehicle with a heat engine for the purposes of depollution
  • the tank being equipped with an integrated electric heating element, able to thaw at least partially the fluid such as reducing agent contained in the tank, this
  • the electric heating element is placed at the bottom of the bowl.
  • the valve is for example a diaphragm valve, this valve being, also, advantageously placed at the bottom of the bowl.
  • This bowl is realizable in stainless steel, for reasons of compatibility with the reducing agents usually used.
  • a tube immersed in the cavity defined by the bowl and conveying electrical conductors supplying the heating element in addition to the suction pipe of the reducing agent, there is also provided a tube immersed in the cavity defined by the bowl and conveying electrical conductors supplying the heating element.
  • the fluid suction pipe as reducing agent, and the routing tube of the electric conductors supplying the heating element, are also advantageously made of stainless steel, for the same reasons as the bowl itself. .
  • the invention proposes a simple solution, with the use of a fluid reserve bowl such as a reducing agent, which does not require an auxiliary pump while guaranteeing proper operation even under incline or slope conditions, and allowing also a low temperature operation through the heating element, judiciously disposed within the cavity del imitated by the bowl.
  • a temperature sensor with servo function of the reheating and thermal protection, can be associated with the heating element, this temperature sensor thus also being located in the region of the bottom of the bowl.
  • the combination of the bowl and the heating element has the advantage that the thawed fluid is confined to the priority area of use, where the fluid is sucked, so that only the strictly necessary amount of fluid is thawed, for an economic operation, fast and perfectly controllable.
  • Figure 1 is a vertical sectional view of a reducing agent tank with a heating reserve bowl according to the present invention
  • Figure 2 shows on an enlarged scale, in vertical section, the detail of the bowl with the heating element
  • Figures 3 and 4 are views similar to Figure 2, illustrating the filling of the bowl and the operation of the valve
  • Figures 5 and 6 are vertical sectional views of the tank, illustrating its operation in case of freezing of the reducing agent
  • Figure 7 illustrates the operation of the tank and in particular of its bowl, in a tilt or slope condition.
  • the reference 1 designates, as a whole, a reducing agent reservoir, which comprises a bottom wall 2, an upper wall 3 and a side wall 4, which delimit an internal volume 5 of this reservoir 1.
  • the reservoir 1 contains, in use, a certain amount of reducing agent 6, the level of which is indicated in 7.
  • the tank 1 is equipped with a heating element 10 of electric type, powered by electrical conductors January 1.
  • the heating element 10 is provided to at least partially thaw the reducing agent 6 to allow its removal by a suction pipe 12, even at low temperatures.
  • the suction pipe 12 is directed to a pump (not shown) by means of which the reducing agent 6 is drawn into the tank 1 and sent to an injector, which distributes this reducing agent in the exhaust line of the vehicle concerned. .
  • the tank 1 is equipped with a bowl 13 placed in its internal volume 5.
  • the bowl 13 has a bottom 14 and a side wall 1 5, which delimit a cavity 1 6, this bottom 14 of the bowl 1 3 being at a low height above the bottom wall 2 of the tank 1.
  • the bowl 13 is held in the central region of the inner volume 5 of the tank 1 by fastening means, not shown.
  • the heating element 10 is placed at the bottom 14 of the bowl 13, a temperature sensor 17 being associated with this heating element 1 0, with a double function of control of the heating and thermal protection.
  • the suction pipe 12 of the reducing agent 6 dips into the cavity 16 of the bowl 13, the starting point 18 of this suction pipe 12 being situated close to the heating element 10.
  • a tube 19 also plunges into the cavity 16 of the bowl 13, parallel to the suction pipe 12.
  • the tube 19 serves for the routing of the electrical conductors 11 which supply the heating element 10.
  • a valve 20 in particular made in the form of a diaphragm valve, suitable for creating or interrupting a communication between the cavity 1 6 of the bowl 1 3, from one side, and the inner volume 5 of the tank 1, on the other hand.
  • the bowl 13 can be made of stainless steel for reasons of compatibility with this reducing agent.
  • the suction pipe 12 and the routing of the electrical conductors can be made of stainless steel. Other materials compatible with the reducing agent, and ensuring a good heat transfer, are also conceivable here.
  • FIGs 3 and 4 illustrate the operation in drawing of the reducing agent 6, when it is not frozen. If at a given instant the level 21 of the reducing agent in the cavity 16 of the bowl 13 is located lower than the level 7 of this reducing agent in the rest of the tank 1, the valve 20 is lifted under the effect of the hydrostatic pressure, and reducing agent 6 thus enters the cavity 16 of the bowl 13, as indicated by arrows F in Figure 3, until levels 21 and 7 are equalized between the inside and the outside of the bowl 13; the valve 20 then closes (see Figure 4).
  • FIGS 5 and 6 illustrate the operation of the tank 1 in case of g el d e reducing agent 6, so low temperature. Initially, it is assumed that the reducing agent 6 is completely frozen.
  • the heating element 1 0 is then fed by the electrical conductors 1 1 and thus causes a partial thaw of the reducing agent 6, inside the bowl 13 and also all around this bowl 13.
  • the volume of thawed reducing agent is indicated at 22.
  • the reducing agent When the reducing agent is to be drawn from the suction pipe 10, it is firstly the thawed reducing agent 22 inside the bowl 13 which is sucked up. The level of thawed reducing agent 22 is then gradually lowering in the bowl 13. Along the heating pipe 10 heated by thermal conduction creates a cylindrical layer 23 of thawed reducing agent, allowing the outside air to enter the bowl 13 and fill the cavity 24 resulting from the pumping of the reducing agent.
  • FIG. 7 illustrates the operation when the vehicle thus the tank 1 is in a tilt or slope condition, and that the level 7 of the reducing agent 6 in the tank 1 is low, namely less than the height of the bowl. 13. With the valve 20, the reducing agent 6 is maintained in the bowl 13, which extends the operating time of the bailing system in such a condition.
  • reservoirs of all shapes which may contain a reducing agent of any kind, or another fluid capable of freezing or whose viscosity varies very strongly depending on the temperature, for example a reservoir of washing liquid; motor vehicle ice cream.

Landscapes

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

Abstract

This relates in particular to a reservoir for a urea-based reducing agent, having an integrated electric heating element, which can be used in a motor vehicle having an internal combustion engine for the purposes of removing pollution. The heating element (10) provided for defrosting the reducing agent (6) is placed inside a cavity (16) that is delimited by a bowl (13), which is itself placed inside the reservoir (1). The cavity (16) of the bowl (13) communicates with the internal volume (5) of the reservoir via a valve (20). A suction pipe (12) for the reducing agent dips into the cavity (16) of the bowl (13), the starting point (18) of this pipe being located close to the heating element (10). Operation is thus ensured when the vehicle is in an inclined or sloping condition, and also in the case of frost.

Description

Réservoir de fluide avec bol de réserve chauffant  Fluid tank with heating reserve bowl
La présente invention concerne un réservoir de fluide, et plus particulièrement un réservoir adapté pour un fluide susceptible de geler ou dont la viscosité varie très fortement en fonction de la température, le réservoir étant équipé à cet effet d'un élément chauffant électrique intégré, apte à dégeler au moins partiellement le fluide contenu dans le réservoir. Cette invention est applicable, entre autres, à un réservoir d'agent réducteur, en particulier d'agent réducteur à base d'urée, utilisable sur un véhicule à moteur thermique à des fins de dépollution. Plus particulièrement encore, l'invention se rapporte à un tel réservoir qui est pourvu d'un bol de réserve chauffant, dans lequel est puisé le fluide tel qu'agent réducteur, contenu dans le réservoir et à prélever pour son utilisation. The present invention relates to a fluid reservoir, and more particularly to a reservoir adapted for a fluid capable of freezing or whose viscosity varies very strongly depending on the temperature, the reservoir being equipped for this purpose with an integrated electric heating element, suitable for at least partially thaw the fluid contained in the reservoir. This invention is applicable, inter alia, to a reducing agent reservoir, in particular urea reducing agent, which can be used on a heat engine vehicle for the purposes of depollution. More particularly, the invention relates to such a tank which is provided with a heating reserve bowl, in which is drawn the fluid such as reducing agent, contained in the tank and taken for its use.
Pour des raisons de respect des normes de pollution, les véhicules automobiles doivent comporter des dispositifs annexes de dépollution qui sont de plus en plus complexes, la chimie de la dépollution nécessitant soit des catalyseurs, soit des agents oxydants ou réducteurs qui sont ajoutés, en particulier dans la ligne d'échappement, pour dépolluer.  For reasons of compliance with pollution standards, motor vehicles must have additional depollution devices which are more and more complex, the depollution chemistry requiring either catalysts or oxidizing or reducing agents which are added, in particular in the exhaust line, to clean up.
En matière de dépollution des véhicules automobiles à moteur diesel, les normes obligent les constructeurs à équiper les systèmes d'échappement d'un pot catalytique, prévu pour réduire les oxydes d'azote par le biais de l'ammoniaque. Cependant, l'ammoniaque étant un produit toxique, la dépollution est faite par utilisation de l'urée, dissoute dans l'eau dans la proportion de 33 % par exemple, qui est transformée en ammoniaque par thermo-hydrolyse dans le système d'échappement, seulement au moment de son utilisation. Ce processus est communément nommé « SCR » (Sélective Catalytic Réduction).  In the field of depollution of motor vehicles with diesel engine, the norms oblige the manufacturers to equip the exhaust systems of a catalytic converter, planned to reduce the oxides of nitrogen by means of ammonia. However, as ammonia is a toxic product, the depollution is made using urea, dissolved in water in the proportion of 33% for example, which is converted into ammonia by thermo-hydrolysis in the exhaust system only when it is used. This process is commonly referred to as "SCR" (Selective Catalytic Reduction).
Le dosage de l'urée doit être ajusté aux besoins créés par les émissions d'oxydes d'azote, générées par le moteur. A cet effet, l'urée est stockée dans un réservoir, mise sous pression par une pompe et distribuée par un injecteur électromagnétique, la pompe et l'injecteur dosant la quantité d'urée prélevée du réservoir et envoyée dans la ligne d'échappement, en liaison avec le fonctionnement du moteur donc avec les émissions d'oxydes d'azote transitant par la ligne d'échappement.  The dosage of urea must be adjusted to the needs created by the emissions of nitrogen oxides, generated by the engine. For this purpose, the urea is stored in a tank, put under pressure by a pump and distributed by an electromagnetic injector, the pump and the injector dosing the amount of urea taken from the tank and sent into the exhaust line, in connection with the operation of the engine so with the emissions of nitrogen oxides passing through the exhaust line.
Dans ce type d'installation de dépollution, il est impératif de prévoir des moyens de réchauffage, pour résoudre les problèmes de gel de l'urée ou autre agent réducteur, problèmes qu i peuvent apparaître dès que la température se situe au-dessous de - 1 1 ° C pour certains agents réducteurs, ou des températures plus basses pour d'autres agents réducteurs. In this type of depollution installation, it is imperative to provide heating means to solve the problems of urea gel or other reducing agent, problems that may occur as soon as the temperature is below -11 ° C for certain reducing agents, or lower temperatures for other reducing agents.
Diverses solutions ont été déjà proposées pour réchauffer l'agent réducteur, afin de pouvoir le prélever et le distribuer quelles que soient les conditions de température. Un premier type de solutions consiste à réaliser un réservoir d'agent réducteur pourvu d'un élément chauffant électrique intégré, apte à dégeler au moins partiellement l'agent réducteur.  Various solutions have already been proposed for heating the reducing agent, so that it can be taken and distributed regardless of the temperature conditions. A first type of solution is to make a reducing agent reservoir provided with an integrated electric heating element, able to thaw at least partially the reducing agent.
Parm i les solutions existantes, l'une consiste en un élément chauffant utilisant des thermistances de puissance à coefficient de température positif (CTP), surmoulées et placées dans le fond du réservoir -voir la demande de brevet allemand DE 10 2005 036 430 A1 . Une autre solution, décrite dans la demande de brevet français FR 2 918 968 A1 , prévoit un élément chauffant sous la forme de pistes résistives apposées sur un film souple ou entre deux films souples, placés à l'intérieur du réservoir et reposant en particulier sur le fond du réservoir.  Among the existing solutions, one consists of a heating element using positive temperature coefficient (PTC) power thermistors, overmolded and placed in the bottom of the tank - see German Patent Application DE 10 2005 036 430 A1. Another solution, described in the French patent application FR 2 918 968 A1, provides a heating element in the form of resistive tracks affixed to a flexible film or between two flexible films, placed inside the reservoir and resting in particular on the bottom of the tank.
Une autre exigence à prendre en compte est de conserver un fonctionnement du système de puisage dans des conditions de dévers et de pente, même avec un réservoir presque vide, sans désamorcer ce système.  Another requirement to be taken into account is to keep the tapping system operating in tilt and slope conditions, even with an almost empty tank, without defusing the system.
Parm i les solutions existantes, on connaît en particulier celle décrite dans la demande de brevet français FR 2 890 341 A1 , où une pompe annexe remplit un bac de réserve dans lequel la pompe principale vient puiser le fluide. Le bac de réserve peut être monté à l'intérieur du réservoir, en particulier dans le volume défini par la paroi d'un bac de rétention formé au fond du réservoir.  Among the existing solutions, it is known in particular that described in the French patent application FR 2 890 341 A1, wherein an auxiliary pump fills a reserve tank in which the main pump draws the fluid. The reserve tank can be mounted inside the tank, in particular in the volume defined by the wall of a retention tank formed at the bottom of the tank.
Toutes ces solutions restent relativement complexes et coûteuses, et ne garantissent pas nécessairement un fonctionnement lorsque le niveau d'agent réducteur est faible et que le véhicule se trouve en condition de dévers ou de pente.  All these solutions remain relatively complex and expensive, and do not necessarily guarantee operation when the level of reducing agent is low and the vehicle is in a tilt or slope condition.
La présente invention a pour but d'apporter une solution simple aux problèmes exposés ci-dessus.  The present invention aims to provide a simple solution to the problems described above.
A cet effet, l'invention a pour objet un réservoir de fluide, par exemple un réservoir d'agent réducteur, en particulier d'agent à base d'urée, utilisable sur un véhicule automobile à moteur thermique à des fins de dépollution, le réservoir étant équipé d'un élément chauffant électrique intégré, apte à dégeler au moins partiellement le fluide tel qu'agent réducteur contenu dans le réservoir, ce réservoir étant caractérisé par le fait que l'élément chauffant est placé à l'intérieur d'une cavité délimitée par un bol, lui-même placé à l'intérieur du réservoir, ladite cavité communiquant avec le volume intérieur du réservoir par au moins un clapet, tandis qu'un tuyau d'aspiration du fluide tel qu'agent réducteur plonge dans la cavité délimitée par le bol, le point de départ du tuyau d'aspiration étant situé à proximité de l'élément chauffant. For this purpose, the subject of the invention is a fluid reservoir, for example a reducing agent reservoir, in particular a urea-based agent, that can be used on a motor vehicle with a heat engine for the purposes of depollution, the tank being equipped with an integrated electric heating element, able to thaw at least partially the fluid such as reducing agent contained in the tank, this tank being characterized in that the heating element is placed inside a cavity delimited by a bowl, itself placed inside the tank, said cavity communicating with the internal volume of the reservoir by at least one valve, while a fluid suction pipe as a reducing agent dips into the cavity defined by the bowl, the starting point of the suction pipe being located near the heating element.
Avantageusement, l'élément chauffant électrique est placé au fond du bol . Le clapet est par exemple un clapet à membrane, ce clapet étant, lui aussi, placé de manière avantageuse au fond du bol.  Advantageously, the electric heating element is placed at the bottom of the bowl. The valve is for example a diaphragm valve, this valve being, also, advantageously placed at the bottom of the bowl.
Ce bol est réalisable en acier inoxydable, pour des raisons de compatibilité avec les agents réducteurs habituellement utilisés.  This bowl is realizable in stainless steel, for reasons of compatibility with the reducing agents usually used.
Dans un mode de réalisation, en plus du tuyau d'aspiration de l'agent réducteur, il est aussi prévu un tube plongeant dans la cavité délimitée par le bol et achem inant des conducteurs électriques d'alimentation de l'élément chauffant.  In one embodiment, in addition to the suction pipe of the reducing agent, there is also provided a tube immersed in the cavity defined by the bowl and conveying electrical conductors supplying the heating element.
Le tuyau d'aspiration du fluide tel qu'agent réducteur, et le tube d'acheminement des conducteurs électriques d'alimentation de l'élément chauffant, sont eux aussi réalisés avantageusement en acier inoxydable, pour les mêmes raisons que le bol lui-même.  The fluid suction pipe as reducing agent, and the routing tube of the electric conductors supplying the heating element, are also advantageously made of stainless steel, for the same reasons as the bowl itself. .
Ainsi, l'invention propose une solution simple, avec utilisation d'un bol de réserve du fluide tel qu'agent réducteur, ne nécessitant pas de pompe annexe tout en garantissant un fonctionnement convenable même en condition de dévers ou de pente, et en permettant aussi un fonctionnement à basse température grâce à l'élément chauffant, judicieusement disposé à l'intérieur de la cavité dél imitée par le bol . On notera qu'un capteur de température, à fonction d'asservissement du réchauffage et de protection thermique, peut être associé à l'élément chauffant, ce capteur de température étant donc lui aussi situé dans la région du fond du bol. La combinaison du bol et de l'élément chauffant offre l'avantage que le flu ide dégelé est confiné dans la zone d'utilisation prioritaire, là où ce fluide est aspiré, de sorte que seule la quantité strictement nécessaire de fluide est dégelée, pour un fonctionnement économique, rapide et parfaitement contrôlable.  Thus, the invention proposes a simple solution, with the use of a fluid reserve bowl such as a reducing agent, which does not require an auxiliary pump while guaranteeing proper operation even under incline or slope conditions, and allowing also a low temperature operation through the heating element, judiciously disposed within the cavity del imitated by the bowl. It will be noted that a temperature sensor, with servo function of the reheating and thermal protection, can be associated with the heating element, this temperature sensor thus also being located in the region of the bottom of the bowl. The combination of the bowl and the heating element has the advantage that the thawed fluid is confined to the priority area of use, where the fluid is sucked, so that only the strictly necessary amount of fluid is thawed, for an economic operation, fast and perfectly controllable.
L'invention sera mieux comprise à l'aide de la description qui suit, en référence au dessin schématique annexé représentant, à titre d'exemple, une forme d'exécution de ce réservoir de fluide avec bol de réserve chauffant. Figure 1 est une vue en coupe verticale d'un réservoir d'agent réducteur avec bol de réserve chauffant conforme à la présente invention, The invention will be better understood from the description which follows, with reference to the attached schematic drawing showing, by way of example, an embodiment of this fluid reservoir with heating reserve bowl. Figure 1 is a vertical sectional view of a reducing agent tank with a heating reserve bowl according to the present invention,
Figure 2 représente à échelle agrandie, en coupe verticale, le détail du bol avec l'élément chauffant,  Figure 2 shows on an enlarged scale, in vertical section, the detail of the bowl with the heating element,
Figures 3 et 4 sont des vues similaires à la figure 2, illustrant le remplissage du bol et le fonctionnement du clapet,  Figures 3 and 4 are views similar to Figure 2, illustrating the filling of the bowl and the operation of the valve,
Figures 5 et 6 sont des vues en coupe verticale du réservoir, illustrant son fonctionnement en cas de gel de l'agent réducteur,  Figures 5 and 6 are vertical sectional views of the tank, illustrating its operation in case of freezing of the reducing agent,
Figure 7 illustre le fonctionnement du réservoir et en particulier de son bol, en condition de dévers ou de pente.  Figure 7 illustrates the operation of the tank and in particular of its bowl, in a tilt or slope condition.
Sur le dessin , la référence 1 désigne, dans son ensemble, un réservoir d'agent réducteur, lequel comprend une paroi inférieure 2, une paroi supérieure 3 et une paroi latérale 4, qui délimitent un volume intérieur 5 de ce réservoir 1 .  In the drawing, the reference 1 designates, as a whole, a reducing agent reservoir, which comprises a bottom wall 2, an upper wall 3 and a side wall 4, which delimit an internal volume 5 of this reservoir 1.
Le réservoir 1 contient, en utilisation, une certaine quantité d'agent réducteur 6, dont le niveau est indiqué en 7. Un orifice de remplissage 8, placé sur la paroi supérieure 3 et normalement obturé par un bouchon 9, permet d'introduire l'agent réducteur 6 dans le réservoir 1 .  The reservoir 1 contains, in use, a certain amount of reducing agent 6, the level of which is indicated in 7. A filling orifice 8, placed on the upper wall 3 and normally closed by a plug 9, makes it possible to introduce the reducing agent 6 in the tank 1.
Dans sa partie inférieure, le réservoir 1 est équipé d'un élément chauffant 10 de type électrique, alimenté par des conducteurs électriques 1 1 . L'élément chauffant 10 est prévu pour dégeler au moins partiellement l'agent réducteur 6 afin de permettre son prélèvement par un tuyau d'aspiration 12, même aux basses températures. Le tuyau d'aspiration 12 est dirigé vers une pompe (non représentée) au moyen de laquelle l'agent réducteur 6 est puisé dans le réservoir 1 et envoyé vers u n injecteur, lequel distribue cet agent réducteur dans la ligne d'échappement du véhicule concerné.  In its lower part, the tank 1 is equipped with a heating element 10 of electric type, powered by electrical conductors January 1. The heating element 10 is provided to at least partially thaw the reducing agent 6 to allow its removal by a suction pipe 12, even at low temperatures. The suction pipe 12 is directed to a pump (not shown) by means of which the reducing agent 6 is drawn into the tank 1 and sent to an injector, which distributes this reducing agent in the exhaust line of the vehicle concerned. .
Le réservoir 1 est équipé d'un bol 13 placé dans son volume intérieur 5. Le bol 13 possède un fond 14 et une paroi latérale 1 5, qui délimitent une cavité 1 6, ce fond 14 du bol 1 3 se situant à une faible hauteur au-dessus de la paroi inférieure 2 du réservoir 1 . Le bol 13 est maintenu dans la région centrale du volume intérieur 5 du réservoir 1 par des moyens de fixation, non représentés. L'élément chauffant 10 est placé au fond 14 du bol 13, un capteur de température 17 étant associé à cet élément chauffant 1 0, avec une double fonction d'asservissement du réchauffage et de protection thermique. Le tuyau d'aspiration 12 de l'agent réducteur 6 plonge dans la cavité 16 du bol 13, le point de départ 18 de ce tuyau d'aspiration 12 étant situé à proximité de l'élément chauffant 10. The tank 1 is equipped with a bowl 13 placed in its internal volume 5. The bowl 13 has a bottom 14 and a side wall 1 5, which delimit a cavity 1 6, this bottom 14 of the bowl 1 3 being at a low height above the bottom wall 2 of the tank 1. The bowl 13 is held in the central region of the inner volume 5 of the tank 1 by fastening means, not shown. The heating element 10 is placed at the bottom 14 of the bowl 13, a temperature sensor 17 being associated with this heating element 1 0, with a double function of control of the heating and thermal protection. The suction pipe 12 of the reducing agent 6 dips into the cavity 16 of the bowl 13, the starting point 18 of this suction pipe 12 being situated close to the heating element 10.
Un tube 19 plonge également dans la cavité 16 du bol 13, parallèlement au tuyau d'aspiration 12. Le tube 19 sert à l'acheminement des conducteurs électriques 1 1 qui alimentent l'élément chauffant 10.  A tube 19 also plunges into the cavity 16 of the bowl 13, parallel to the suction pipe 12. The tube 19 serves for the routing of the electrical conductors 11 which supply the heating element 10.
Dans le fond 14 du bol 13 est placé un clapet 20, en particulier réalisé sous la forme d'un clapet à membrane, apte à créer ou à interrompre une communication entre la cavité 1 6 du bol 1 3, d'u ne part, et le volume intérieur 5 du réservoir 1 , d'autre part.  In the bottom 14 of the bowl 13 is placed a valve 20, in particular made in the form of a diaphragm valve, suitable for creating or interrupting a communication between the cavity 1 6 of the bowl 1 3, from one side, and the inner volume 5 of the tank 1, on the other hand.
L'agent réducteur 6 étant à base d'urée, le bol 13 est réalisable en acier inoxydable pour des raisons de compatibilité avec cet agent réducteur. De m êm e , l e tuya u d 'asp i ration 1 2 et l e tu be 1 9 d'acheminement des conducteurs électriques sont réalisables en acier inoxydable. D'autres matières compatibles avec l'agent réducteur, et assurant un bon transfert thermique, sont aussi envisageables ici.  Since the reducing agent 6 is based on urea, the bowl 13 can be made of stainless steel for reasons of compatibility with this reducing agent. Similarly, the suction pipe 12 and the routing of the electrical conductors can be made of stainless steel. Other materials compatible with the reducing agent, and ensuring a good heat transfer, are also conceivable here.
En se référant plus particul ièrement aux figures 3 à 6, on décrira maintenant le fonctionnement du réservoir 1 , dans diverses conditions.  Referring more particularly to FIGS. 3 to 6, the operation of reservoir 1 will now be described under various conditions.
Les figures 3 et 4 illustrent le fonctionnement en puisage de l'agent réducteur 6, lorsque celui-ci n'est pas gelé. Si à un instant donné le niveau 21 de l'agent réducteur dans la cavité 16 du bol 13 est situé plus bas que le niveau 7 de cet agent réducteur dans le reste du réservoir 1 , le clapet 20 se soulève sous l'effet de la pression hydrostatique, et de l'agent réducteur 6 pénètre ainsi dans la cavité 16 du bol 13, comme indiqué par des flèches F sur la figure 3, jusqu'à égalisation des niveaux 21 et 7 entre l'intérieur et l'extérieur du bol 13 ; le clapet 20 se referme alors (voir figure 4).  Figures 3 and 4 illustrate the operation in drawing of the reducing agent 6, when it is not frozen. If at a given instant the level 21 of the reducing agent in the cavity 16 of the bowl 13 is located lower than the level 7 of this reducing agent in the rest of the tank 1, the valve 20 is lifted under the effect of the hydrostatic pressure, and reducing agent 6 thus enters the cavity 16 of the bowl 13, as indicated by arrows F in Figure 3, until levels 21 and 7 are equalized between the inside and the outside of the bowl 13; the valve 20 then closes (see Figure 4).
Les figures 5 et 6 illustrent le fonctionnement du réservoir 1 en cas de g el d e l'agent réducteur 6, donc à basse température. Au départ, on suppose que l'agent réducteur 6 est complètement gelé.  Figures 5 and 6 illustrate the operation of the tank 1 in case of g el d e reducing agent 6, so low temperature. Initially, it is assumed that the reducing agent 6 is completely frozen.
L'élément chauffant 1 0 est alors alimenté par les conducteurs électriques 1 1 et il provoque ainsi un dégel partiel de l'agent réducteur 6, à l'intérieur du bol 13 et aussi tout autour de ce bol 13. Sur la figure 5, le volume d'agent réducteur dégelé est indiqué en 22.  The heating element 1 0 is then fed by the electrical conductors 1 1 and thus causes a partial thaw of the reducing agent 6, inside the bowl 13 and also all around this bowl 13. In FIG. the volume of thawed reducing agent is indicated at 22.
Lorsque de l'agent réducteur doit être puisé par le tuyau d'aspiration 1 0, c'est d'abord l'agent réducteu r dégelé 22 se trouvant à l'intérieur du bol 13 qui est aspiré. Le niveau d'agent réducteur dégelé 22 va alors s'abaisseur progressivement dans le bol 13. Le long du tuyau d'aspiration 10 chauffé par conduction thermique se crée une couche cylindrique 23 d'agent réducteur dégelé, permettant ainsi à l'air extérieur d'entrer dans le bol 13 et de remplir la cavité 24 résultant du pompage de l'agent réducteur. When the reducing agent is to be drawn from the suction pipe 10, it is firstly the thawed reducing agent 22 inside the bowl 13 which is sucked up. The level of thawed reducing agent 22 is then gradually lowering in the bowl 13. Along the heating pipe 10 heated by thermal conduction creates a cylindrical layer 23 of thawed reducing agent, allowing the outside air to enter the bowl 13 and fill the cavity 24 resulting from the pumping of the reducing agent.
L'aspiration de l'agent réducteur dégelé 22 se poursuivant, le clapet The suction of the thawed reducing agent 22 continues, the valve
20 permet l'admission de l'agent réducteur dégelé se trouvant à l'extérieur du bol 13 (selon le fonctionnement décrit plus haut avec référence aux figures 3 et 4), ce qui prolonge la durée de fonctionnement du système de puisage, avant que le système se désamorce. 20 allows the admission of the thawed reducing agent located outside the bowl 13 (according to the operation described above with reference to Figures 3 and 4), which extends the operating time of the draw system, before the system is defusing.
Enfin, la figure 7 illustre le fonctionnement lorsque le véhicule donc le réservoir 1 est en condition de dévers ou de pente, et que le niveau 7 de l'agent réducteur 6 dans le réservoir 1 est bas, à savoir inférieur à la hauteur du bol 13. Grâce au clapet 20, l'agent réducteur 6 est maintenu dans le bol 13, ce qui prolonge la durée de fonctionnement du système de puisage dans une telle condition.  Finally, FIG. 7 illustrates the operation when the vehicle thus the tank 1 is in a tilt or slope condition, and that the level 7 of the reducing agent 6 in the tank 1 is low, namely less than the height of the bowl. 13. With the valve 20, the reducing agent 6 is maintained in the bowl 13, which extends the operating time of the bailing system in such a condition.
On ne s'éloignerait pas du cadre de l'invention, telle que définie dans les revendications annexées :  It is not departing from the scope of the invention, as defined in the appended claims:
- en modifiant la forme du bol,  - by changing the shape of the bowl,
- en réalisant le bol, ainsi que le tuyau d'aspiration et le tube d'acheminement des conducteurs électriques, en toute matière compatible avec la nature de l'agent réducteur,  - by making the bowl, as well as the suction pipe and the pipe of routing of the electrical conductors, of any material compatible with the nature of the reducing agent,
- en éq u i pa nt l e bol d ' u n él ément chauffant de tout type : thermistance de type CTP, résistance céramique,  in addition to the bowl of a heating element of any type: CTP thermistor, ceramic resistor,
- en ayant recours à tous moyens équivalents, par exemple en remplaçant le tube d'acheminement des conducteurs électriques par un câble électrique,  - by using all equivalent means, for example by replacing the tube for routing electrical conductors by an electric cable,
- en ajoutant tous accessoires, par exemple en prévoyant une crépine d'aspiration située en amont du tuyau d'aspiration et placée dans le bol,  - adding all accessories, for example by providing a suction strainer located upstream of the suction pipe and placed in the bowl,
- en fixant le bol dans le réservoir par tout moyen,  - by fixing the bowl in the tank by any means,
- en destinant l'invention à des réservoirs de toutes formes, pouvant contenir un agent réducteur de toute nature, ou un autre fluide susceptible de geler ou dont la viscosité varie très fortement en fonction de la température, par exemple un réservoir de liquide lave-glace de véhicule automobile.  by targeting the invention to reservoirs of all shapes, which may contain a reducing agent of any kind, or another fluid capable of freezing or whose viscosity varies very strongly depending on the temperature, for example a reservoir of washing liquid; motor vehicle ice cream.

Claims

REVENDICATIONS
1. Réservoir de fluide, par exemple réservoir d'agent réducteur, en particulier d'agent à base d'urée, utilisable sur un véhicule automobile à moteur thermique à des fins de dépollution, le réservoir (1) étant équipé d'un élément chauffant électrique (10) intégré, apte à dégeler au moins partiellement le fluide tel qu'agent réducteur (6) contenu dans le réservoir (1), caractérisé en ce que l'élément chauffant (10) est placé à l'intérieur d'une cavité (16) délimitée par un bol (13), lui-même placé à l'intérieur du réservoir (1), ladite cavité (16) communiquant avec le volume intérieur (5) du réservoir (1) par au moins un clapet (20), tandis qu'un tuyau d'aspiration (12) du fluide tel qu'agent réducteur (6) plonge dans la cavité (16) délimitée par le bol (13), le point de départ (18) du tuyau d'aspiration (12) étant situé à proximité de l'élément chauffant (10). 1. A fluid reservoir, for example a reducing agent reservoir, in particular a urea-based agent, that can be used on a motor vehicle with a heat engine for depollution purposes, the reservoir (1) being equipped with an element electric heater (10) integrated, able to at least partially thaw the fluid such as reducing agent (6) contained in the tank (1), characterized in that the heating element (10) is placed inside the a cavity (16) delimited by a bowl (13), itself placed inside the tank (1), said cavity (16) communicating with the interior volume (5) of the tank (1) by at least one valve (20), while a suction pipe (12) of the fluid such as reducing agent (6) is immersed in the cavity (16) delimited by the bowl (13), the starting point (18) of the pipe d suction (12) being located near the heating element (10).
2. Réservoir de fluide selon la revendication 1, caractérisé en ce que l'élément chauffant (10) est placé au fond (14) du bol (13). 2. Fluid tank according to claim 1, characterized in that the heating element (10) is placed at the bottom (14) of the bowl (13).
3. Réservoir de fluide selon la revendication 2, caractérisé en ce qu'un capteur de température (17), à fonction d'asservissement du réchauffage et de protection thermique, est associé à l'élément chauffant (10), ce capteur de température étant lui aussi situé dans la région du fond (14) du bol (13). 3. Fluid tank according to claim 2, characterized in that a temperature sensor (17), with servo function of the heating and thermal protection, is associated with the heating element (10), this temperature sensor. being also located in the bottom region (14) of the bowl (13).
4. Réservoir de fluide selon l'une des revendications 1 à 3, caractérisé en ce que le clapet (20) est un clapet à membrane. 4. Fluid reservoir according to one of claims 1 to 3, characterized in that the valve (20) is a diaphragm valve.
5. Réservoir de fluide selon l'une des revendications 1 à 4, caractérisé en ce que le clapet (20) est placé au fond (14) du bol (13). 5. Fluid tank according to one of claims 1 to 4, characterized in that the valve (20) is placed at the bottom (14) of the bowl (13).
6. Réservoir de fluide selon l'une des revendications 1 à 5, caractérisé en ce qu'est prévu un tube (19) plongeant dans la cavité (16) délimitée par le bol (13) et acheminant des conducteurs électriques d'alimentation (11 ) de l'élément chauffant (10). 6. Fluid tank according to one of claims 1 to 5, characterized in that there is provided a tube (19) immersed in the cavity (16) defined by the bowl (13) and carrying electrical conductors ( 11) of the heating element (10).
7. Réservoir de fluide selon l'une des revendications 1 à 6, caractérisé en ce que le bol (13) est réalisé en acier inoxydable. 7. Fluid tank according to one of claims 1 to 6, characterized in that the bowl (13) is made of stainless steel.
8. Réservoir de fluide selon l'ensemble des revendications 6 et 7, caractérisé en ce que le tuyau d'aspiration (12) du fluide tel qu'agent réducteur (6) et le tube (19) d'acheminement des conducteurs électriques d'alimentation (1 1 ) de l'élément chauffant (10) sont réalisés en acier inoxydable. 8. Fluid tank according to the set of claims 6 and 7, characterized in that the suction pipe (12) of the fluid such as reducing agent (6) and the tube (19) for conveying the electrical conductors d supply (1 1) of the heating element (10) are made of stainless steel.
EP10851032A 2010-05-03 2010-09-08 Fluid reservoir having a heating reserve bowl Withdrawn EP2567079A2 (en)

Applications Claiming Priority (2)

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FR1053396A FR2959497B1 (en) 2010-05-03 2010-05-03 FLUID TANK WITH HEATED RESERVE BOWL
PCT/FR2010/051867 WO2011138514A2 (en) 2010-05-03 2010-09-08 Fluid reservoir having a heating reserve bowl

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EP (1) EP2567079A2 (en)
CN (1) CN103119258A (en)
FR (1) FR2959497B1 (en)
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WO (1) WO2011138514A2 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5668695B2 (en) * 2012-01-10 2015-02-12 トヨタ自動車株式会社 Exhaust gas purification device for in-vehicle internal combustion engine
DE102012110585A1 (en) * 2012-11-06 2014-05-08 Emitec Denmark A/S Apparatus for providing a liquid additive and method for heating the additive
FR3004217B1 (en) * 2013-04-09 2015-04-24 Peugeot Citroen Automobiles Sa LIQUID STORAGE TANK OF A VEHICLE
JP6297905B2 (en) * 2014-04-22 2018-03-20 日立建機株式会社 Construction machinery
DE102016200718A1 (en) * 2016-01-20 2017-07-20 Robert Bosch Gmbh Method for operating a delivery and metering system for the reducing agent solution of an SCR catalyst
CN106014563A (en) * 2016-07-19 2016-10-12 天津星洁汽车排放控制***有限公司 Diesel engine tail gas after-treatment system and heating control method

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005036430B4 (en) * 2005-08-03 2011-05-05 Eichenauer Heizelemente Gmbh & Co. Kg tank heater
FR2890341B1 (en) 2005-09-02 2008-10-24 Inergy Automotive Systems Res FUEL SYSTEM COMPRISING A FUEL RESERVE AND A RETENTION CONTAINER
DE102006046899A1 (en) * 2006-10-04 2008-04-10 Robert Bosch Gmbh Tank for storing a reducing agent
DE102006048721B4 (en) * 2006-10-16 2018-04-19 Robert Bosch Gmbh Catalytic reduction device for a catalytic reduction of nitrogen oxides in exhaust systems
DE102007022585A1 (en) * 2007-05-14 2008-11-27 Robert Bosch Gmbh Cable bushing through a heating pot lid of a heating pot of a reducing agent tank
FR2916188B1 (en) 2007-05-16 2011-05-06 Inergy Automotive Systems Res A UREA AND EMBASE TANK WITH INTEGRATED HEATING ELEMENT.
DE102007028480A1 (en) * 2007-06-21 2008-12-24 Robert Bosch Gmbh SCR device
DE102008042954A1 (en) * 2008-10-20 2010-04-22 Robert Bosch Gmbh Dosing system for a liquid medium, in particular urea-water solution
US8459013B2 (en) * 2008-12-30 2013-06-11 Daimler Trucks North America Llc Urea tank with closure member for vehicle exhaust system

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2011138514A2 *

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CN103119258A (en) 2013-05-22
RU2012150457A (en) 2014-06-10
FR2959497A1 (en) 2011-11-04
WO2011138514A2 (en) 2011-11-10
WO2011138514A3 (en) 2013-01-24
FR2959497B1 (en) 2014-01-10

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