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Method to regenerate a particle filter in the exhaust gas treatment system of an internal combustion engine and internal combustion engine

A particle filter and exhaust device technology, which is applied to the electronic control of exhaust treatment devices, exhaust devices, machines/engines, etc., can solve the problems of intensive and complex costs, and achieve the effect of stable operation and stable combustion

Inactive Publication Date: 2018-12-18
VOLKSWAGEN AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this system and the method implemented therewith are relatively complex and cost-intensive, since for each cylinder an additional sensor is necessary for detecting the ionization identification signal

Method used

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  • Method to regenerate a particle filter in the exhaust gas treatment system of an internal combustion engine and internal combustion engine
  • Method to regenerate a particle filter in the exhaust gas treatment system of an internal combustion engine and internal combustion engine
  • Method to regenerate a particle filter in the exhaust gas treatment system of an internal combustion engine and internal combustion engine

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Embodiment Construction

[0086] figure 1 A schematic representation of an internal combustion engine 10 is shown, the outlet 16 of which is connected to an exhaust system 20 . The internal combustion engine 10 is embodied as an Otto engine, which is externally ignited by means of a spark plug 12 and has a plurality of combustion chambers 14 . The internal combustion engine 10 is preferably embodied as an internal combustion engine 10 which is supercharged by means of an exhaust-gas turbocharger 22 , wherein the exhaust-gas turbocharger 22 is downstream of the outlet 16 and upstream of the first emission-reducing exhaust-gas aftertreatment component 24 , 26 , 44 layout. The exhaust system 20 comprises an exhaust gas duct 28 in which a particle filter 24 is arranged in the flow direction of the exhaust gas through the exhaust gas channel 28 and a three-way catalytic converter 26 is arranged downstream of the particle filter 24 . The particle filter 24 and the three-way catalytic converter 26 are prefe...

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Abstract

A method for regenerating a particulate filter in an exhaust system of an internal combustion engine. In a normal operation, the internal combustion engine is operated at a stoichiometric air / fuel ratio. To regenerate the particulate filter, it is provided that the air / fuel ratio be adjusted toward lean, and, at the same time, that the combustion in the combustion chambers of the internal combustion engine be stabilized by suitably adapting the ignition energy, the duration of ignition, and / or the ignition frequency, to prevent misfires and the associated uncontrolled entrainment of unburned fuel into the exhaust system. The inventive method for regenerating the particulate filter makes possible a more rapid and lower-emission regeneration of a particulate filter. Also, an internal combustion engine having an exhaust system and a control unit that is adapted for implementing a method according to the present invention.

Description

technical field [0001] The invention relates to a method for regeneration of a particle filter in the exhaust duct of an internal combustion engine and to an internal combustion engine with an exhaust gas aftertreatment system according to the preambles of the independent patent claims. Background technique [0002] The continuous strengthening of emission regulations places high demands on vehicle manufacturers to achieve by corresponding measures for reducing the raw engine emissions and by corresponding exhaust gas aftertreatment. With the introduction of the EU6 regulation class, limit values ​​for the number of particles are prescribed for gasoline engines, which in many cases necessitates the use of gasoline particle filters. Such soot particles form in particular after a cold start of the internal combustion engine due to incomplete combustion associated with an overstoichiometric air-fuel ratio and cold cylinder walls during the cold start. The cold start phase is t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01N3/023F01N9/00
CPCF01N3/023F01N9/002B01D53/944B01D53/9445B01D53/9477B01D53/96F01N3/101F02P9/002F02P23/04B01D2255/102B01D2255/908F01N2250/02F01N2260/06F01N2390/02F01N2430/06F01N2430/08F01N2560/025F01N2900/08F01N2900/1402F01N2900/1606Y02T10/12Y02T10/40F01N13/009F01N3/035F02D41/029F02P15/08
Inventor D.苏德沙耶夫
Owner VOLKSWAGEN AG
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