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Device for treating exhaust gas containing soot particles

A particle and carbon black technology, applied in the field of exhaust gas from diesel fuel, can solve problems such as technical difficulties in continuous operation

Inactive Publication Date: 2014-12-10
EMITEC EMISSIONSTECHNIK
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  • Description
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Problems solved by technology

But this leads to the problem that it must be ensured that the nitrogen dioxide in the exhaust stream comes into contact with the deposited carbon black particles to a sufficient extent
[0007] In connection with this, there are also technical difficulties in the continuous operation of such exhaust systems in motor vehicles, in which different loads of the internal combustion engine lead to different exhaust gas flows, exhaust gas compositions and temperatures

Method used

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  • Device for treating exhaust gas containing soot particles
  • Device for treating exhaust gas containing soot particles
  • Device for treating exhaust gas containing soot particles

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Embodiment Construction

[0074] figure 1 A motor vehicle 16 is shown having an internal combustion engine 24 and an exhaust system 25 with an exhaust pipe 29 through which the exhaust gas of the internal combustion engine 24 flows in an exhaust gas flow direction 23 starting from the internal combustion engine 24 . The device 1 according to the invention for treating exhaust gas containing soot particles is arranged on an exhaust line 29 in the exhaust system 25 . The device 1 according to the invention has a nitrogen dioxide source 3 , an ionization element 4 and a surface separator 6 arranged one behind the other in the exhaust gas flow direction 23 along an exhaust pipe 29 . The surface separator 6 preferably consists of a honeycomb body 22 having channels 7 extending from the inlet region 8 to the outlet region 9 . A neutralization zone 5 is provided on the surface separator 6 . The neutralization zone 5 is controlled by a control mechanism 17 . The surface separator 6 , the neutralization zone...

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Abstract

A device for treating exhaust gas containing soot particles, includes at least one ionization element for ionizing soot particles and at least one separation device having a surface precipitator for depositing ionized soot particles. The at least one surface precipitator includes at least two at least partially electrically conductive neutralization regions that are electrically insulated from each other in order to neutralize ionized soot particles. A method for converting soot particles of an exhaust gas includes applying different electric potentials. A motor vehicle includes the device and carries out the method.

Description

technical field [0001] The invention relates to a device for treating exhaust gases containing soot particles, in particular having a so-called electrostatic filter or electrofilter, and to a suitable method for converting soot particles in exhaust gases. The invention is particularly suitable for the treatment of exhaust gases of mobile internal combustion engines in the automotive sector, especially for the treatment of exhaust gases originating from diesel fuel. Background technique [0002] Many different solutions for eliminating soot particles in exhaust gases from mobile internal combustion engines have been discussed. In addition to alternating closed wall-flow filters, open side-flow filters, gravity separators, etc., systems have also been proposed in which the particles in the exhaust gas are charged (charged) and then settled by means of electrostatic attraction. These systems are known inter alia under the designations "electrostatic filters" or "electrofilters...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03C3/013B03C3/49B03C3/68F01N3/01F01N3/023F01N3/027
CPCF01N3/01B03C3/49F01N3/0275B03C3/68B03C2201/30F01N3/0231B01D46/0032B03C3/013B03C3/12B03C3/383F01N3/023
Inventor W·莫斯P·希尔特R·布吕克
Owner EMITEC EMISSIONSTECHNIK
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