• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a device for regenerating a particle filter (10), comprising a thermoelectric generator (20), a capacitor (30) and a resistive element (40), said generator (20) being capable of generating a current electric under the action of a temperature gradient in contact with a cold source on the one hand, and a hot source on the other hand, a portion of the electric current thus generated being intended to ensure the charge of the capacitor ( 30), said capacitor (30) being adapted to discharge through the resistive element (40) so as to raise the temperature of a first fluid upstream of the particulate filter (10) so as to cause pyrolysis at least a part of the particles retained in said filter (10), said first fluid constituting the hot source of the thermoelectric generator (20). The invention also relates to an associated assembly.
    公开号:FR3054596A1
    申请号:FR1657380
    申请日:2016-07-29
    公开日:2018-02-02
    发明作者:Kamel Azzouz；Vaulx Cedric De；Michel Simonin
    申请人:Valeo Systemes Thermiques SAS；
    IPC主号:
    专利说明:

    ® FRENCH REPUBLIC
    NATIONAL INSTITUTE OF INDUSTRIAL PROPERTY © Publication number:
    (to be used only for reproduction orders)
    ©) National registration number
    054 596
    57380
    COURBEVOIE
    ©) Int Cl 8 : F01 N 3/023 (2017.01)
    PATENT INVENTION APPLICATION
    A1
    ©) Date of filing: 07.29.16. © Applicant (s): VALEO THERMAL SYSTEMS (30) Priority: Simplified joint stock company - FR. ©) Inventor (s): AZZOUZ KAMEL, DE VAULX CEDRIC and SIMONIN MICHEL. (43) Date of public availability of the request: 02.02.18 Bulletin 18/05. ©) List of documents cited in the report preliminary research: Refer to end of present booklet (© References to other national documents ©) Holder (s): VALEO THERMAL SYSTEMS related: Joint stock company. ©) Extension request (s): @) Agent (s): VALEO THERMAL SYSTEMS.
    P4) DEVICE FOR REGENERATING A PARTICLE FILTER AND ASSOCIATED ASSEMBLY.
    FR 3 054 596 - A1 _ The invention relates to a device for regenerating a particle filter (10), comprising a thermoelectric generator (20), a capacitor (30) and a resistive element (40), said generator (20 ) being capable of generating an electric current under the action of a temperature gradient in contact with a cold source on the one hand, and a hot source on the other hand, part of the electric current thus generated being intended ensuring the charge of the capacitor (30), said capacitor (30) being designed to discharge through the resistive element (40) so as to raise the temperature of a first fluid, upstream of the particulate filter (10) , so as to cause the pyrolysis of at least part of the particles retained in said filter (10), said first fluid constituting the hot source of the thermoelectric generator (20).
    The invention also relates to an associated assembly.

    Device for regenerating a particulate filter and associated assembly
    In the automotive field, thermoelectric devices have already been proposed using elements, called thermoelectrics, making it possible to generate an electric current in the presence of a temperature gradient between two of their opposite faces according to the phenomenon known as the effect. Seebeck. These devices are also called thermoelectric generators.
    It is known to position these thermoelectric generators in a motor vehicle exhaust line, or even in the recirculated exhaust gas circuit for motor vehicles having such a circuit between the exhaust and the intake of the heat engine. The goal is to use the heat from exhaust gases from motor vehicles to generate electrical energy.
    On the other hand, the treatment of exhaust gases is necessary, in particular to avoid the release of toxic gases in the open air. This gas treatment is a separate function from that of the generation of electrical energy by the generators mentioned above. It is commonly provided by a particle filter.
    One of the aims of the present invention consists in proposing a solution making it possible to ensure the regeneration of such a particulate filter.
    Thus, the invention relates to a device for regenerating a particle filter, comprising a thermoelectric generator, a capacitor and a resistive element, said generator being capable of generating an electric current under the action of a temperature gradient on contact. from a cold source on the one hand, and from a hot source on the other.
    According to the invention, part of the electric current thus generated is intended to ensure the charging of the capacitor, said capacitor being designed to discharge through the resistive element so as to raise the temperature of a first fluid, upstream of the filter. with particles, so as to cause the pyrolysis of at least part of the particles retained in said filter, said first fluid constituting the hot source of the thermoelectric generator.
    The device of the invention comprises a resistive element which is supplied by an electric current generated locally, by a thermoelectric generator. This resistive element initiates the pyrolysis of undesirable particles retained by a particle filter, thus causing the regeneration of said particle filter.
    The device of the invention therefore provides a solution for ensuring regeneration of the particulate filter. The proposed solution has the advantage of allowing this regeneration without using a source of energy external to the device of the invention.
    According to different embodiments of the invention, which can be taken together or separately:
    said resistive element comprises at least one heating resistance,
    said resistive element comprises a plurality of heating resistors, controlled individually, so as to ensure the pyrolysis of the particles at different points of said filter,
    - said heating resistors are activated sequentially, during a cycle, so as to ensure the pyrolysis of most of the particles retained in the filter,
    - the sequential activation of said resistors is a function of the flow rate of said first fluid,
    - The regeneration device of the invention is intended to be positioned in a motor vehicle exhaust line so that the exhaust gases circulating in said line define said first fluid and / or in an exhaust gas circuit motor vehicle recirculated so that said recirculated exhaust gas circulating in said circuit defines said first fluid,
    - the resistive element is positioned, in the direction of gas flow, upstream of the particle filter,
    - the particle filter is positioned, in the direction of gas flow, upstream of the thermoelectric generator.
    The invention also advantageously relates to an assembly comprising a regeneration device as described above, said assembly further comprising a catalytic device, said catalytic device being configured to ensure catalytic conversion of the toxic components of said first fluid.
    The invention also advantageously relates to such an assembly in which the catalytic device is mounted in series with the regeneration device, said catalytic device being positioned, along an exhaust line, between an engine, configured to escape said said exhaust gas, and said regeneration device.
    The invention will be better understood, and other objects, details, characteristics and advantages thereof will appear more clearly during the detailed explanatory description which will follow, of at least one embodiment of the invention given in title of example purely illustrative and not limiting, with reference to the attached schematic drawings.
    In these drawings:
    FIG. 1 is a schematic representation of an exhaust line along which is shown an exemplary embodiment of a device for regenerating a particle filter according to the invention,
    FIG. 2 is a detailed view of the part marked A in FIG. 1.
    As illustrated in FIG. 1, the invention relates to a device for regenerating a particle filter 10, comprising a thermoelectric generator 20, a capacitor 30 and a resistive element 40.
    By "particle filter 10" is meant a means for filtering a fluid from its toxic particles, for example by retaining them in pores of a porous material constituting said filter.
    By "thermoelectric generator 20" is meant a generator capable of generating an electric current under the action of a temperature gradient in contact with a cold source on the one hand, and a hot source on the other hand . To do this, said generator 20 will include a plurality of thermoelectric elements (not detailed here) capable of generating an electric current under the action of a temperature gradient exerted between two of their faces. These thermoelectric elements work, according to the Seebeck effect, by making it possible to create an electric current in a load connected between said faces subjected to the temperature gradient. As is known to a person skilled in the art, such elements consist, for example, of Bismuth and Tellurium (Bi2Te3).
    By "capacitor 30" is preferably meant a high capacity capacitor, known in the English language under the name of "Ultra Capacitor". The capacitor 30 of the invention is designed to be charged by a continuous charge, of low intensity, over a relatively long time, for example over a time of 10 minutes. The same capacitor 30 is then able to restore the electricity which it contains in the form of a peak of electricity, of very high intensity, over a relatively short time, for example over a time of a few seconds, for example a time between 1 and 3 seconds.
    The term "resistive element 40" means an element comprising at least one heating resistance, or even a plurality of heating resistors supplied by the current made available by the capacitor 30. An energy of the order of 50 Joules, for example, can be generated at the terminals of said resistive element 40, in particular during the restitution of the electricity stored by the capacitor 30 which is done over a very short time (see above). This means that, instantaneously, said resistive element 40 is capable of raising the temperature of a fluid flowing through it, in particular by about 200 ° C.
    FIG. 1 schematically illustrates a motor vehicle exhaust line and / or a motor vehicle recirculated exhaust gas circuit. This line, or circuit, is identified 50 in FIG. 1. The exhaust gases from said motor vehicle are used here as a hot source by the thermoelectric generator 20. These gases can circulate at a temperature of the order of 700 °. C, for example.
    According to the invention, the capacitor 30 is charged by a portion of the electric current produced by said thermoelectric generator 20.
    According to the invention, again, the capacitor 30 is designed to discharge through the resistive element 40 so as to raise the temperature of a first fluid, upstream of the particle filter 10.
    The first fluid here corresponds to the exhaust gases.
    This temperature rise causes the pyrolysis of at least part of the particles retained in said filter 10. In other words, the pyrolysis of toxic particles retained in the filter 10 is initiated by a sudden increase in the temperature of the exhaust gases, in particular at the inlet of said particle filter 10.
    It is interesting to note that the first fluid also constitutes the hot source of the thermoelectric generator 20.
    It should be noted that the resistive element 40 at the origin of the pyrolysis of said particle filter 10 will advantageously include a plurality of heating resistors 42, controlled individually. Thus, it is possible to provide for the pyrolysis of the particles at different points of said filter 10 (see FIG. 2). In other words, said heating resistors 42 are activated sequentially, during a cycle, so as to ensure the pyrolysis of most of the particles retained in the filter 10.
    This activation will be managed by an electronic control unit 41.
    It should be noted that the electronic control unit 41 manages the sequential activation of said resistors 42 as a function of the flow rate of said first fluid. In particular, the higher the exhaust gas flow rate, the more clogged the filter 10, the greater the need to regenerate it. The management cycle of the heating resistors 42 will therefore be provided so as to efficiently regenerate the particle filter 10; we will then speak of piecewise regeneration of the particle filter 10. For example, the particle filter 10 could be regenerated at the end of a cycle of three sections of 10/15 minutes each, each section corresponding to the indicative time of a charge. / discharge of the capacitor 30 according to the invention. In the context of the example here detailed, the particulate filter 10 can then be regenerated, as a whole, after a cycle of between 30 and 45 minutes.
    It should also be noted that the expression "depollution" of the particulate filter 10 is used to denote its "regeneration". It is also known to speak of "cleaning" of the particulate filter 10.
    As illustrated here, the resistive element 40 will advantageously be positioned, in the direction of gas flow, upstream of the particle filter 10. The particle filter 10 will also be positioned, in this same direction of gas flow, upstream of the thermoelectric generator 20.
    Therefore, in this configuration, the gases flowing through said generator 20 have been filtered / cleaned upstream of said generator 20; they do not come to damage the structure of said generator 20. In addition, these gases do not have to be reprocessed downstream of said generator 20 before being released out of the exhaust line 50.
    It should be noted that the invention also advantageously relates to an assembly comprising a regeneration device as described above, said assembly further comprising a catalytic device 60. Said catalytic device 60 is configured to ensure catalytic conversion toxic components of said first fluid, namely exhaust gases. The operation of said catalytic device 60 is not detailed here since it is not the subject of the invention.
    The invention also advantageously relates to such an assembly in which the catalytic device 60 is mounted in series with the regeneration device, said catalytic device 60 being positioned, along said exhaust line 50, between a vehicle engine 70 automobile and said regeneration device (see FIG. 1). The exhaust gases in question here come from said engine 70.
    An advantage of the regeneration device according to the invention, and of the associated assembly, consists in a reduction in the consumption of petrol of said motor vehicle, in particular since there is no need for injection of additional petrol to ensure the regeneration of said particulate filter 10.
    On the other hand, it should be noted that the control of emission of toxic particles is particularly effective here, since it is ensured by the catalytic device 60 on the one hand, and by the particle filter 10 on the other hand. In other words, the invention makes it possible to improve the treatment of exhaust gases, in particular using the electrical energy which is produced by the thermoelectric generator 20 from these same exhaust gases.
    权利要求:
    Claims (10)
    [1" id="c-fr-0001]
    Claims
    1. Regeneration device for a particle filter (10), comprising a thermoelectric generator (20), a capacitor (30) and a resistive element (40), said generator (20) being capable of generating an electric current under the action of a temperature gradient in contact with a cold source on the one hand, and a hot source on the other hand, part of the electric current thus generated being intended to ensure the charging of the capacitor (30), said capacitor (30) being designed to discharge through the resistive element (40) so as to raise the temperature of a first fluid, upstream of the particle filter (10), so as to cause the pyrolysis of at least at least part of the particles retained in said filter (10), said first fluid constituting the hot source of the thermoelectric generator (20).
    [2" id="c-fr-0002]
    2. Regeneration device according to the preceding claim, wherein said resistive element (40) comprises at least one heating resistor (42).
    [3" id="c-fr-0003]
    3. Regeneration device according to any one of claims 1 or 2, wherein said resistive element (40) comprises a plurality of heating resistors (42), individually controlled, so as to ensure the pyrolysis of the particles at different points of said filter (10).
    [4" id="c-fr-0004]
    4. Regeneration device according to the preceding claim, wherein said heating resistors (42) are activated sequentially, during a cycle, so as to ensure the pyrolysis of most of the particles retained in the filter (40).
    [5" id="c-fr-0005]
    5. Regeneration device according to the preceding claim, wherein the sequential activation of said resistors (42) is a function of the flow rate of said first fluid.
    [6" id="c-fr-0006]
    6. Regeneration device according to any one of the preceding claims, intended to be positioned in an exhaust line (50) of a motor vehicle so that the exhaust gases flowing in said line (50) define said first fluid and / or in a recirculated exhaust gas circuit (50) of a motor vehicle so that said recirculated exhaust gas circulating in said circuit (50) define said first fluid.
    [7" id="c-fr-0007]
    7. Regeneration device according to the preceding claim, wherein the resistive element (40) is positioned, in the direction of gas flow, upstream of the particulate filter (10).
    [8" id="c-fr-0008]
    8. Regeneration device according to any one of claims 6 or 7, in which the particle filter (10) is positioned, in the direction of gas flow, upstream of the thermoelectric generator (20).
    [9" id="c-fr-0009]
    9. An assembly comprising a regeneration device according to any one of the preceding claims, said assembly further comprising a catalytic device (60), said catalytic device (60) being configured to provide catalytic conversion of the toxic components of said first fluid .
    [10" id="c-fr-0010]
    10. Assembly according to the preceding claim, in which the catalytic device (60) is mounted in series with the regeneration device, said catalytic device (60) being positioned, along an exhaust line (50), between a engine (70), configured to escape said exhaust gas, and said regeneration device.
    AT
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    同族专利:
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    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    FR2806125A1|2000-03-10|2001-09-14|Renault|I.c. engine exhaust particle filter regenerator has electric heater fed by condenser discharge in regeneration phase|
    DE102011050443A1|2011-05-17|2012-11-22|Fev Gmbh|Arrangement for regeneration of filter for treatment of combustion exhaust gas from internal combustion engine, has heater arranged in flow direction partially upstream of filter into exhaust gas stream|CN113062789A|2020-01-02|2021-07-02|广州汽车集团股份有限公司|Vehicle exhaust particle trapping and regenerating device and method and vehicle|
    CN105715343B|2014-12-03|2019-07-19|天纳克（苏州）排放系统有限公司|The residual neat recovering system and utilize method that motor exhaust post-processes|
    WO2020260935A1|2019-06-25|2020-12-30|Bhatnagar Rishi|System and method for filtering exhaust gases of a vehicle|
    法律状态:
    2017-07-31| PLFP| Fee payment|Year of fee payment: 2 |
    2018-02-02| PLSC| Search report ready|Effective date: 20180202 |
    2018-07-27| PLFP| Fee payment|Year of fee payment: 3 |
    2019-07-31| PLFP| Fee payment|Year of fee payment: 4 |
    2020-07-31| PLFP| Fee payment|Year of fee payment: 5 |
    2021-07-29| PLFP| Fee payment|Year of fee payment: 6 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1657380A|FR3054596B1|2016-07-29|2016-07-29|DEVICE FOR REGENERATING A PARTICLE FILTER AND ASSOCIATED ASSEMBLY|FR1657380A| FR3054596B1|2016-07-29|2016-07-29|DEVICE FOR REGENERATING A PARTICLE FILTER AND ASSOCIATED ASSEMBLY|
    EP17183789.1A| EP3276134B1|2016-07-29|2017-07-28|Device for regenerating a particle filter and associated assembly|
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