Exhaust gas treatment device

A waste gas treatment device and exhaust system technology, which is applied in the direction of exhaust devices, mufflers, gas passages, etc., and can solve problems such as high loads

Active Publication Date: 2011-06-22
EBERSPACHER EXHAUST TECH GMBH & CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This results in higher loads on the welded points between the respective pipe and housing

Method used

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Examples

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Embodiment Construction

[0028] according to figure 1 , the exhaust gas treatment device 1 comprises a housing 2 which encloses at least one interior space 3 . The exhaust gas treatment device 1 is used for an exhaust system 4 of an internal combustion engine (only partially visible here), which can preferably be accommodated in a road vehicle. The exhaust gas treatment device 1 can be a catalytic converter, for example an oxidation catalytic converter or a NOx storage catalytic converter or an SCR catalytic converter. The exhaust gas treatment device 1 can also be a particle filter, more preferably a soot filter. Furthermore, the exhaust gas treatment device 1 may be a silencer. It also concerns any combination of basic catalytic converters, particulate filters and / or mufflers. Particularly, figure 1 and 4 Only a part of the exhaust gas treatment device 1 is shown in each case.

[0029] figure 1 The exhaust gas treatment device 1 in the exemplary embodiment shown comprises at least one through...

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PUM

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Abstract

The invention relates to an exhaust gas treatment device (1) for an exhaust system (4) of a combustion engine, more preferably of a road vehicle, with a housing (2) enveloping at least one interior space (3), and with at least one through-pipe (5) penetrating the interior space (3) without interruption and which at two fastening points (6, 7) distant from each other is connected to the housing in a fixed manner. For compensating thermally related expansion effects the through-pipe (5) between the fastening points (6,7) can comprise at least one expansion compensation section (8), in which a wall of the through-pipe comprises slits (12) penetrating the wall (10) alternating in circumferential direction and strips (11) protruding relative to adjacent wall sections (13, 14) of the through-pipe (5).

Description

technical field [0001] The invention relates to an exhaust gas treatment device for the exhaust system of an internal combustion engine, in particular of a road vehicle. Background technique [0002] The exhaust gas treatment device can be configured, for example, as a catalytic converter or a particle filter or a silencer or comprise any desired combination of these devices. In any case, such an exhaust-gas treatment device usually has a housing which encloses at least one interior space. For certain applications, in particular in the case of silencers, it is necessary to pass at least one through-pipe through the interior space without interruption, wherein the through-pipe is then held in two positions in the housing spaced apart from each other. For example, the through-pipe penetrates the two bases of the spaced-apart housing, which fix the through-pipe transversely. [0003] In order to reduce or avoid the stress between the through pipe and the housing due to the ef...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01N13/08F01N1/02F01N13/18
CPCF01N13/1816F01N2470/24F01N13/185F01N2470/02F01N13/1811F01N13/08
Inventor 约阿希姆·希尔德布兰德罗尔夫·耶巴辛斯基
Owner EBERSPACHER EXHAUST TECH GMBH & CO
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