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Honeycomb body and method for producing the honeycomb body

A technology of honeycomb body and axial direction, applied in the channel field, can solve the problems of increasing cycle time, channel blocking, destroying the sheet metal layer, etc., and achieve the effect of increasing strength

Active Publication Date: 2021-01-08
CPT GRP GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Disadvantages of [0006] the honeycomb body through which the flow radially flows and the production method used to produce the honeycomb body. In particular, the formation of the annular metal layer takes place within the sheet metal layer stress, which may even damage the sheet metal layer
Molding the channel into a sheet metal layer by embossing limits the maximum height of the channel because the inflow of material is significantly restricted during embossing
Therefore, relatively flat channels can lead to increased deposition of the used solder material and washcoat during subsequent welding and coating, which promotes clogging of the individual channels
Also, production is very slow since embossing is a discontinuous process and requires very accurate positioning of the sheet metal layers in order to achieve sufficiently precise embossing of the channels
This increases cycle time, which in turn leads to high production costs

Method used

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  • Honeycomb body and method for producing the honeycomb body
  • Honeycomb body and method for producing the honeycomb body
  • Honeycomb body and method for producing the honeycomb body

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0049] figure 1 A structured metal foil 1 with embossed corrugations 2 is shown in the left region. The corrugations 2 generate crests and troughs, which run parallel to each other and over the entire width of the metal foil 1 .

[0050] Metal foil 1 has a central cutout 3 . The metal foil 1 and the cutouts 3 have a circular periphery as a result of the corrugations 2 being embossed from the initially oval metal foil.

[0051] Box 4 indicates the area of ​​the metal foil 1 through which flow can pass from the cut-out 3 forming the first flow channel, since the second flow channel created by the corrugation 2 leads in this area to the cut-out 3 or intersects said cut-out. Arrow 5 indicates a possible flow through the second flow channel. It can be seen here that only a straight flow is possible through the second flow channel leading to the cutout 3 .

[0052] exist figure 1 The right part of , shows a metal foil 6 with a circular periphery. and figure 1 In contrast to t...

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PUM

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Abstract

The invention relates to a honeycomb body (20, 23) for exhaust gas aftertreatment, comprising a plurality of interconnected metal films (1, 6, 30) stacked one above the other, the honeycomb body (20,23) having, as an inflow section, a central first flow channel extending in the axial direction of the honeycomb body (20, 23), and, between each two adjacent metal films (1, 6, 30), a plurality of second flow channels (11, 22), the first flow channel being fludically connected to the second flow channels (11, 22), wherein the second flow channels (11, 22) formed between two mutually adjacent metal films (1, 6, 30) extend in a straight line and parallel to one another in a radial direction of the honeycomb body (20, 23). The invention also relates to a method for producing the honeycomb body.

Description

technical field [0001] The invention relates to a honeycomb body for aftertreatment of exhaust gases, comprising a plurality of interconnected metal foils stacked on top of each other, wherein the honeycomb body has an inflow region extending in the axial direction of the honeycomb body The segment has a central first flow channel with a plurality of second flow channels located in each case between metal foils adjacent to each other, wherein the first flow channel is in fluid communication with the second flow channels. The invention also relates to a method for producing the honeycomb body. Background technique [0002] For exhaust gas aftertreatment purposes, various honeycomb bodies are used, which are often referred to as catalytic converters. A common feature of honeycomb bodies is essentially that they form channels through which a flow can pass and along which the exhaust gas to be cleaned can flow. The material or coating of material forming the walls of the chann...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01N3/10F01N3/28
CPCF01N3/10F01N3/281F01N2330/02F01N2330/04F01N2330/30F01N2470/18B01D46/2455B01D46/248B01J35/56B23K2101/02B01D53/94B01D2255/9155B23K1/0014B01D46/249B01D46/2474
Inventor C·帕布斯特P·希尔特S·舍佩尔斯F·库尔斯M·福伊特
Owner CPT GRP GMBH