Method for regenerating a filter element contaminated with solid materials in an exhaust gas system, and exhaust gas system

An exhaust equipment and filter technology, applied in mechanical equipment, exhaust devices, engine components, etc., can solve problems such as hindering exhaust gas recovery, increasing fuel consumption of internal combustion engines, and affecting emissions performance, and achieves accelerated regeneration. Effect

Active Publication Date: 2016-02-24
VOLKSWAGEN AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The filter element can become clogged with particles during operation and affect or even prevent exhaust gas recovery
This can lead to no longer complying with the specified emissions performance and / or to increased fuel consumption of the internal combustion engine
This may require replacement of the filter element or even the entire exhaust gas recovery section

Method used

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  • Method for regenerating a filter element contaminated with solid materials in an exhaust gas system, and exhaust gas system
  • Method for regenerating a filter element contaminated with solid materials in an exhaust gas system, and exhaust gas system
  • Method for regenerating a filter element contaminated with solid materials in an exhaust gas system, and exhaust gas system

Examples

Experimental program
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Effect test

Embodiment Construction

[0041] figure 1 A partial schematic view of the automobile 10 is shown. The automobile 10 includes an internal combustion engine 12 , such as a diesel engine, and an exhaust 14 . The exhaust device 14 has a main exhaust path 16 . The main exhaust path 16 is between an engine-side end 18 connected to the internal combustion engine 12 (by means of an exhaust elbow 48 of the exhaust device 14 ) and an outlet-side end 20 for discharging the exhaust gas of the internal combustion engine 12 into the environment extend. The exhaust apparatus 14 also has an AGR path 22 (AGR stands for Exhaust Gas Recovery) extending between the branch 23 of the main exhaust path 16 and the inlet-side end 24 . The inlet-side end 24 is connected to an air supply 26 of the internal combustion engine 12 . The exhaust apparatus 14 also includes an AGR valve 28 in the AGR path 22 .

[0042] Furthermore, the exhaust system 14 also includes a filter element 30 between the engine-side end 18 and the AGR v...

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Abstract

The invention relates to a method for regenerating a filter element (30) contaminated with solid materials in an exhaust gas system (14), wherein the exhaust gas system (14) comprises a main exhaust gas path (16) having a particle filter (38) and an EGR path (22), which branches off from the main exhaust gas path (16) downstream of the particle filter (38), wherein the filter element (30) is arranged in the EGR path (22), and the method comprises the following step: - causing an exhaust gas stream (31) fed back through the EGR path (22) to flow through the filter element (30) during a regeneration of the particle filter (38), wherein the regeneration of the filter element (30) is effected by means of a heating of the fed-back exhaust gas stream (31) brought about by the regeneration of the particle filter (38). The invention further relates to an exhaust gas system (14) that is designed for performing the method according to the invention.

Description

technical field [0001] The invention relates to a method for regenerating a solid-contaminated filter element of an exhaust system having a main exhaust path with a particle filter and an AGR path between the particle filter The downstream branch off from the main exhaust path, where the filter element is arranged in the AGR path. The invention also relates to an exhaust device for carrying out the method of the invention. Background technique [0002] Exhaust Gas Recirculation (German abbreviation: AGR; English EGR: ExhaustGasRecirculation) is used to reduce the emissions of internal combustion engines in order to comply with current exhaust regulations. The AGR system can be designed, for example, as a high-pressure exhaust gas recovery device. Therein, the recovered exhaust gas flow is withdrawn from the main exhaust gas flow upstream of the turbine of the turbocharger and fed to the intake air of the internal combustion engine downstream of the compressor of the turboc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02D41/00F02D41/02F01N3/023F02M26/06F02M26/46F02M26/13
CPCF01N3/023F02D41/0055F02D41/0065F02D41/0072F02D41/029F02D2041/0067F02M26/06F02M26/15F02M26/35F02M26/46F02M26/50Y02T10/40
Inventor C.海尔肯布林克
Owner VOLKSWAGEN AG
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