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Support pin of catalytic converter device with electric heating sheet

A catalytic converter and support pin technology, applied in the direction of exhaust devices, noise reduction devices, catalyst carriers, etc., can solve the problems of reduced insulation, magnesia is not resistant to leaching, short circuit, etc., and achieve the effect of improving the connection

Pending Publication Date: 2022-07-22
纬湃技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Disadvantages of magnesia as insulation In particular, magnesia is not resistant to leaching
For example, the use of AdBlue (exhaust treatment fluid) in the exhaust line can lead to leaching of magnesium oxide, thereby reducing the insulating effect and possibly creating a short circuit
Furthermore, it is disadvantageous that when using porous materials the insulating sections that can be produced are limited in their length

Method used

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  • Support pin of catalytic converter device with electric heating sheet
  • Support pin of catalytic converter device with electric heating sheet
  • Support pin of catalytic converter device with electric heating sheet

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0024] figure 1 A cross section of the support pin 1 is shown. The support pin has a ceramic core 2 . The support pin 1 has, on both ends of the support pin (but only one of the ends is shown), a thickening 3 which is formed by a coating 4 consisting of a ceramic-metal mixture.

[0025] The support pins 1 are accommodated in the honeycomb body 5 . exist figure 1 Only a part of the corrugated layer of the honeycomb body 5 is shown. Here, the support pin 1 is embedded in one of the corrugations on the front side. The corrugated layer shown and the smooth layer not shown together form the flow channels of the honeycomb body 5 .

[0026] An adhesion promoter 6 is arranged between the support pin 1 and the honeycomb body 5 for the connection between the honeycomb body 5 and the thickening 3 of the support pin 1 . The adhesion promoter 6 can be, for example, a solder which is used to solder the honeycomb body 5 to the ceramic-metal mixture 4 of the support pin 1 .

[0027] Th...

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PUM

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Abstract

The invention relates to a catalyst device for the exhaust gas aftertreatment of an internal combustion engine, comprising at least one catalyst and at least one electrically heatable heating plate, the catalyst and the heating plate each being formed by a honeycomb body having a plurality of flow channels through which a flow can flow in a main flow direction, according to the invention, the mechanical connection between the catalyst and the heating plate is formed by at least one support pin (1, 7, 10), the support pin (1, 7, 10) having an inner core (2, 8) and the support pin (1, 7, 10) having a thickening (3) on both end regions, the core (2, 8) being formed from a ceramic material and the thickening (3) being formed from a ceramic-metal mixture.

Description

technical field [0001] The invention relates to a catalytic converter device / catalytic converter for the aftertreatment of exhaust gas from an internal combustion engine, comprising at least one catalytic converter and at least one electrically heatable heating plate, wherein the catalytic converter and the heating plate are each formed by a honeycomb body, The honeycomb body has a plurality of flow channels which can be flowed through in the main flow direction, wherein the mechanical connection between the catalytic converter and the heating plate is formed by at least one support pin. Background technique [0002] Currently, in the production of electrically heated catalyst carriers, support pins are used which serve to mechanically connect the heating plate upstream of the catalyst to the catalyst, but at the same time electrically separate the two components from one another. For this purpose, pins are usually used, the core of which consists of a wire which is provided...

Claims

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Application Information

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IPC IPC(8): F01N3/20F01N3/28
CPCF01N3/2013F01N2240/16F01N2330/02F01N3/2026F01N3/281F01N2450/22Y02T10/12
Inventor P·希尔特S·舍佩尔斯T·哈里格
Owner 纬湃技术有限公司
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