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Apparatus and method for regenerating a particulate filter

A particle filter and supercharger technology, applied in the direction of exhaust device, muffler device, electric control of exhaust gas treatment device, etc. The effect of dead time

Active Publication Date: 2021-03-26
VOLKSWAGEN AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, the disadvantage of the known solutions is that they are associated with a high technical complexity of regulation in order to simultaneously achieve the temperature and oxygen excess required for regeneration in the exhaust gas channel.
Furthermore, the additional secondary air pump increases the costs for the exhaust gas aftertreatment

Method used

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  • Apparatus and method for regenerating a particulate filter
  • Apparatus and method for regenerating a particulate filter

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Experimental program
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Embodiment Construction

[0025] figure 1 Internal combustion engine 10 is shown, which is connected on the input side to fresh air line 22 and on the output side to exhaust gas duct 12 . In the exhaust gas passage 12 , the turbine 14 of the exhaust gas turbocharger 20 is arranged downstream of the outlet 56 of the internal combustion engine 10 in the flow direction of the exhaust gas of the internal combustion engine 10 . A bypass with a wastegate 46 is provided on the turbine 14 in order to achieve a pressure drop in the exhaust gas channel 12 in a known manner. A catalytic converter 16 , preferably a three-way catalytic converter, is arranged further downstream in the exhaust gas channel 12 in the direction of flow. Further downstream in the exhaust gas duct 12 is arranged a particle filter 18 which filters soot particles from the exhaust gas of the internal combustion engine 12 and which can deposit the soot particles on the surface of the particle filter. In the exhaust gas duct 12, a first lamb...

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Abstract

The invention discloses a device and method for regeneration of a particle filter. The invention relates to a device for regenerating a particle filter in the exhaust passage of a turbocharged internal combustion engine, wherein a turbine of the turbocharger is arranged in an exhaust passage of the internal combustion engine and drives a compressor for supplying fresh air supply to the internal combustion engine. An additional electric compressor is provided and configured to be connected to the exhaust passage of the internal combustion engine through a second air pipeline, wherein the secondair pipeline is connected to the exhaust passage in the upstream of the particle filter, such that the air supply to the particle filter is achieved so as to oxygen storage the soot therein and achieve the regeneration of particle filter. In addition, the invention relates to a method for regeneration of the particle filter in the exhaust passage of the internal combustion engine.

Description

technical field [0001] The invention relates to a device and a method for regenerating a particle filter in the exhaust gas tract of an internal combustion engine. Background technique [0002] Current and future increasingly stringent exhaust gas regulations place high demands on the untreated emissions of motors and the exhaust gas aftertreatment of internal combustion engines. Furthermore, vehicle and engine manufacturers seek to reduce the consumption of internal combustion engines and the associated CO 2 emission. With the introduction of the next exhaust gas regulation class EU6, for the first time particulate limit values ​​are also specified for gasoline engines. This can lead to the need to use particle filters also in motor vehicles with gasoline engines. Over the service life of the internal combustion engine, the particle filter is loaded with dust and soot particles. Dust particles represent an inorganic and non-renewable load on the soot filter. At corresp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01N3/023F01N9/00F02B39/10
CPCF01N3/023F01N9/00F02B39/10F01N3/021F01N3/05F01N3/30F01N9/002F01N2430/06F02B37/04F02B37/168F02D41/0007F02D41/029F02D41/1441F02D41/1454Y02T10/12Y02T10/40
Inventor D.诺瓦克
Owner VOLKSWAGEN AG
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