CN102257249A - 用于内燃机的废气冷却器 - Google Patents

用于内燃机的废气冷却器 Download PDF

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Publication number
CN102257249A
CN102257249A CN2009801509251A CN200980150925A CN102257249A CN 102257249 A CN102257249 A CN 102257249A CN 2009801509251 A CN2009801509251 A CN 2009801509251A CN 200980150925 A CN200980150925 A CN 200980150925A CN 102257249 A CN102257249 A CN 102257249A
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gaseous effluent
wall
heat
heat exchanger
tube
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托马斯·黑肯贝格
彼得·格斯克斯
霍尔格·布雷姆
德克·诺伊梅斯特尔
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Mahle Behr GmbH and Co KG
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Behr GmbH and Co KG
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/04—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust using liquids
    • F01N3/043—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust using liquids without contact between liquid and exhaust gases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/02—Tubular elements of cross-section which is non-circular
    • 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
    • F01N5/00—Exhaust or silencing apparatus combined or associated with devices profiting by exhaust energy
    • F01N5/02—Exhaust or silencing apparatus combined or associated with devices profiting by exhaust energy the devices using heat
    • F01N5/025—Exhaust or silencing apparatus combined or associated with devices profiting by exhaust energy the devices using heat the device being thermoelectric generators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D3/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium flows in a continuous film, or trickles freely, over the conduits
    • F28D3/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium flows in a continuous film, or trickles freely, over the conduits with tubular conduits
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N10/00—Thermoelectric devices comprising a junction of dissimilar materials, i.e. devices exhibiting Seebeck or Peltier effects
    • H10N10/10—Thermoelectric devices comprising a junction of dissimilar materials, i.e. devices exhibiting Seebeck or Peltier effects operating with only the Peltier or Seebeck effects
    • H10N10/17—Thermoelectric devices comprising a junction of dissimilar materials, i.e. devices exhibiting Seebeck or Peltier effects operating with only the Peltier or Seebeck effects characterised by the structure or configuration of the cell or thermocouple forming the device
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2240/00—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being
    • F01N2240/02—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being a heat exchanger
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2240/00—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being
    • F01N2240/04—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being an electric, e.g. electrostatic, device other than a heater
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Geometry (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Exhaust-Gas Circulating Devices (AREA)
  • Exhaust Silencers (AREA)
  • Exhaust Gas After Treatment (AREA)

Abstract

本发明涉及一种用于内燃机的废气冷却器，该废气冷却器包括用于引导内燃机废气的流动路径(1a)，其中，该流动路径具有用于将废气流从冷却流体分隔开的壁(1)，并且其中，热量能够通过壁(1)在废气和冷却流体之间交换，其中，壁(1)至少部分地面式地覆盖以柔韧的热电薄膜。

Description

用于内燃机的废气冷却器
技术领域
本发明涉及一种按照权利要求1前序部分所述的用于内燃机的废气冷却器。
背景技术
在根本上所讨论的是，使用内燃机废热来运行热电元件，例如塞贝克元件。由此，能够提高内燃机的总效率。尤其是所提供的热电元件的成本和结构上的耗费到目前为止阻碍了一系列解决方案。
DE 10 2006 055 120描述了一种热电薄膜，这种热电薄膜由于其特性能保持在高温状态，并且此外，具有足够的机械柔韧性同样可以用于施加到弯曲的或者成角的面上。根据本发明的热电薄膜定义为依据DE 10 2006 055 120 A1的薄膜。该薄膜至少在合适的实施方式中具有足够的耐热性，用于利用热的废气作为热源来运行。
发明内容
本发明的任务在于，提供一种用于内燃机的废气冷却器，借助该废气冷却器可将废气的热能部分地转换成一种高价值的能量形式。
该任务对于开头提到的换热器而言依据本发明以涉及权利要求1特征部分的特征来解决。
通过以柔韧的热电薄膜覆盖壁，能够成本低廉且有效地将大面积的热电元件布置在发动机的废气流中。因为废气冷却器通常已经出于其它原因诸如用于减少有害物质的废气再循环而进行了设置，除了薄膜的和必要时用于馈送从薄膜获得的电流的控制电子机构的制备外，在车载***中几乎没有出现额外的结构上的耗费。同时，废气在这样的废气冷却器中流经特别大的流道表面或者说壁，从而使得能够产生高电功率。此外，通过冷却流体为热电元件提供高效的且限定的散热。
在本发明的优选实施方式中，所述流体是冷却剂回路的液态冷却剂，由此，在高冷却功率的同时得到特别大的局部温度差。
在本发明的一种可行的实施方式中，废气冷却器构造为管壳式换热器，其中，壁分别构造为多个换热管中一个换热管的管壁。在本发明的一种可作为选择的实施方式中，废气冷却器构造为板式换热器，其中，壁分别构造为换热器堆叠板的面。不管是换热管的情况下还是在堆叠板的情况下，柔韧的热电薄膜都可以简单并且可靠地施加到导热的表面上或者布置在废气和冷却流体之间的壁上。
在通常特别有利的实施方式中，电热薄膜至少在废气侧施加在壁上。由此，在薄膜的相反而置的表面之间可获得特别大的温度差进而获得特别高的效率。
本发明的其它优点和特征由下面描述的实施例以及由从属权利要求来得出。
附图说明
下面，对按照本发明的优选实施例加以描述并且借助于附图来详细阐释。
图1示出依据本发明的废气冷却器的部分剖面视图。
具体实施方式
附图1示出的废气冷却器构造为管壳式换热器，在管壳式换热器中，多个分别构造成流动路径1a的平行的换热管1布置在冷却剂流过的壳体或者说水套3内。换热管1由车辆内燃机的废气流过，用于将废气的热量通过换热管1的壁传递到冷却剂处。随后，将被冷却的废气至少部分地在入口侧输送至内燃机，例如以便在柴油机中降低氮氧化物的排放。
在换热管1的废气侧的内侧上分别施加有柔韧的热电薄膜2。在此，薄膜2与换热管的壁处于尽可能良好的热接触。根据薄膜的设计，例如可通过面式钎焊而在热和机械方面构成接触。
薄膜在设置的接触部位(未示出)处进行电接触，从而使得这些薄膜在运行废气冷却器时可获得电能。该能量可存储到车辆的电路中，为此，必要时应设置有相应的调整电子机构。
根据需求，也可以多个薄膜相叠地布置，并且作为选择或补充地，在换热管的冷却剂侧上同样可以设置有薄膜。

Claims (5)

1.用于内燃机的废气冷却器，所述废气冷却器包括
用于引导内燃机的废气的流动路径(1a)，
其中，所述流动路径具有用于将废气流从冷却流体分隔开的壁(1)，并且
其中，热量能够通过所述壁(1)在所述废气与所述冷却流体之间交换，
其特征在于，
所述壁(1)至少部分地面式地覆盖以柔韧的热电薄膜(2)。
2.按照权利要求1所述的废气冷却器，其特征在于，所述流体是冷却剂回路中的液态的冷却剂。
3.按照前述权利要求中任一项所述的废气冷却器，其特征在于，所述废气冷却器构造为管壳式换热器，其中，所述壁分别构造为多个换热管(1)中一个换热管的管壁。
4.按照前述权利要求1或2中任一项所述的废气冷却器，其特征在于，所述废气冷却器构造为板式换热器，其中，所述壁分别构造为换热器堆叠板的面。
5.按照前述权利要求中任一项所述的废气冷却器，其特征在于，所述热电薄膜(2)至少在废气侧施加在所述壁(1)上。
CN2009801509251A 2008-12-19 2009-12-07 用于内燃机的废气冷却器 Pending CN102257249A (zh)

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DE102008063701.7 2008-12-19
DE102008063701A DE102008063701A1 (de) 2008-12-19 2008-12-19 Abgaskühler für einen Verbrennungsmotor
PCT/EP2009/066507 WO2010069801A1 (de) 2008-12-19 2009-12-07 Abgaskühler für einen verbrennungsmotor

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US (1) US20110308771A1 (zh)
EP (1) EP2379852B1 (zh)
JP (1) JP2012512983A (zh)
KR (1) KR20110118615A (zh)
CN (1) CN102257249A (zh)
DE (1) DE102008063701A1 (zh)
WO (1) WO2010069801A1 (zh)

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Publication number Publication date
WO2010069801A1 (de) 2010-06-24
US20110308771A1 (en) 2011-12-22
EP2379852A1 (de) 2011-10-26
KR20110118615A (ko) 2011-10-31
JP2012512983A (ja) 2012-06-07
EP2379852B1 (de) 2016-08-17
DE102008063701A1 (de) 2010-06-24

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Application publication date: 20111123