DE8019813U1 - Ceramic swell mat, in particular for storing catalyst blocks in motor vehicle exhaust systems - Google Patents

Description

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DIPL.-ING. W. GOIiIiWITZBR · DIPL.-ING .. F. W. MOLL

6740 LANDAU / PALATINATE ■ LANGSTBABBE 5

PO Box 20B0 TEIiBFON 06341/87000, 60SS TELEX 0403833 POSTSCHECK LUDWIGSHAFEN 27 6ί ·· Β-β7β ■ DBVTSOHB RANK IiANDATT 0218400 (BIiZ 648 700 03)

July 23, 1980 - 2 - Fri

Paul Gillet GmbH, Edenkoben

"Ceramic swell mat, especially for storing catalyst blocks in motor vehicle exhaust systems "

The innovation relates to a ceramic swell mat such as that used, for example, and in particular for storage and sealing of catalyst blocks for exhaust gas purification in exhaust systems of motor vehicles can be used. Such swelling mats are used as uramallings for the catalyst blocks introduced between its outer surface and the surrounding housing of the system. It has been shown that such swelling mats are exposed to washouts and thus their storage and Largely lose sealing function when over are exposed to gas flows with high pulsation strength for a long time.

The innovation is accordingly based on the task further develop this ceramic swell mat so that you can create your own Tasks better, especially around for example

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no longer by pulsating gas flows in more or less
can be washed out and destroyed in a short time.

The innovation solves this problem with a ceramic swell mat, which is reinforced by a corrugated wire mesh mat inserted into it.

A swelling mat reinforced in this way can in itself be subjected to any stresses to which it is subjected, in many ways. withstand better dimensions than the well-known unreinforced swelling mat. This also applies in particular to their use as a lag « tion and seal for catalyst blocks in exhaust systems.

The built-in corrugated wire mesh mat prevents washing out with certainty, or at least that way
slows down so that it no longer plays a role in the range of the otherwise usual service life expectancy. The necessary elasticity in the thickness direction of the swelling mat is not reduced by the corrugated wire mesh mat.

Other features of the innovation and details of the
advantages achieved by the same result from the following description of a in the accompanying drawing
purely by way of example and schematically shown sectional view and a possible application of the innovation.

Fig. 1 shows a section through the inventive ceramic swelling mat, in

Fig. 2 is an example of application as a storage

and seal for catalyst blocks in the
Housing of an exhaust system of a motor vehicle shown.

I I t I t I

The ceramic swelling mat 1, for example such as is marketed under the brand name "Interam AM", is reinforced with a wire mesh mat 2, which is introduced into the swelling mat 1 in wave form in such a way that it j in each case from one surface 3 of the ceramic swelling mat -I wave-shaped to the other surface 4 of the same and again runs back. So the wire mesh mat has the i? Shape of a continuous sine curve. '

Such a reinforced swelling mat is suitable for preferential | wise and especially excellent for the storage and sealing Γ of catalyst blocks 5 in the housing 6 of a motor vehicle; _; Exhaust or exhaust system. It does not depend on the training I of this housing in detail. The swelling mat 1 with corrugated wire mesh mat 2 as reinforcement encloses each | because there is a catalyst block 5 on its outer surface and | in the annular gap between this lateral surface and the surrounding f; the housing 6 arranged. Due to the elastic restoring force inherent in the swelling mat and further improved by the corrugated wire mesh mat, the respective catalyst block 5 f is in the housing 6 in both the axial and radial directions stored wall-free. Due to the swelling mat is also a proper sealing of the f through the annular gap between catalysis; ¹ generator block and housing given bypass. The bypass shares occurring in pure h ner wire mesh storage of the gas flow S come in elimination. A washout of the swelling mat 1 (J by pulsating gas flows is also prevented by the reinforcement; * with a corrugated wire mesh mat. ■

The housing 6 continues in connection cones 7 as usual. Between the individual catalyst blocks 5 are spacing | rings 8 arranged. If necessary, additional gas sealing rings 9 and 10 can be provided in order to also achieve the last possible proportions to prevent gas not being passed through the catalyst blocks!

Claims (1)

'·' · DIMMING. W. GOLLWITZER DIPL.-DiQ. F. W. MÖIX 6740 LANDAU / PALATINATE IiANOBTBABBB S FOBTFAOH SOSO · TELEPHONE 0Θ3 «1/87000, BOSS · TELEX 0453S33 POSTSCHECK! .UDWIGSHAFEN Ϊ7 5β2-β7β ■ DEUTSCHE BANK LANDAU OS 18 «00 (BLZ 048 700 03) July 23, 1980 Fr. Paul Gillet GmbH, Edenkoben "Ceramic swell mat, especially for storing catalyst blocks in motor vehicle exhaust systems " Claim to protection Ceramic swell mat, in particular for storing catalyst blocks in motor vehicle exhaust systems, thereby characterized in that it has a reinforcement in the form of an inserted corrugated wire mesh mat.