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Filter elements

A filter and filter element technology, which is applied in the field of DOC catalyst carrier to manufacture this kind of filter element, can solve the problems of difficult control, loss of integrity, difficulty in maintaining high porosity, etc., and achieve low fuel consumption, low operating cost, and ventilation sex enhancing effect

Inactive Publication Date: 2011-06-08
NV BEKAERT SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Cutting or punching operations can affect the integrity of the web
Perforated or cut webs lose integrity and collapse unless the web is sintered
Difficult to control during punching or cutting and use and maintain high porosity over time due to compressibility

Method used

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Embodiment Construction

[0081] The present invention will be described with respect to specific embodiments and with reference to certain drawings but the invention is not limited thereto but only by the claims. The drawings are only schematic and not limiting. In the drawings, the size of some of the elements may be exaggerated and not drawn on scale for illustrative purposes. These dimensions and relative dimensions do not correspond to reality when the invention is implemented in practice.

[0082] In addition, the terms "first", "second" and "third" and the like in the specification and claims are used to distinguish similar elements and do not necessarily describe temporal or spatial hierarchical order or any other the order of the methods. It is to be understood that the terms so used are interchangeable under appropriate circumstances and that the described embodiments of the invention are capable of operation in other sequences than described or illustrated herein.

[0083] Furthermore, in...

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PUM

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Abstract

A filter element according to the invention comprises a filter volume (702) having an inflow side and an outflow side defining an average flow direction. The filter volume has an axis (708) substantially parallel to the average flow direction and further comprising a casing (716) delimiting the outer boundary of the filter volume in the direction of the average flow path. The casing is gas impermeable in radial direction. The filter volume is filled with a filter material comprising fibers, a majority of the fibers at least partially encircle the axis. The filter material further comprises an insert material (704, 706) which has a higher air permeability than the filter material. The insert material protrudes only partially in average flow direction. The filter element is preferably used for filtration of diesel soot from exhaust gas of a diesel combustion engine.

Description

[0001] invention technical field [0002] The present invention relates to a filter element and a method of providing a filter element, in particular to a filter element suitable for filtering soot from exhaust gas, such as a filter element suitable for filtering diesel exhaust gas from a diesel combustion device such as a diesel combustion engine, for example as a DOC catalyst carrier. Background of the invention [0003] Filter media comprising metal fibers are known in the art. As an example, WO03 / 047720 discloses a multi-layer sintered metal fiber filter medium for filtering diesel soot from diesel engine exhaust gas. Although the performance is satisfactory, the media may have the disadvantage that the media clogs after only a limited amount of soot is contained. This is caused by the use of filter media with low porosity, etc. Therefore, very frequent and extensive regeneration operations are required, for example by means of electrical regeneration (i.e. passing an e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D46/10B01D39/20
CPCB01D2239/1208B01D39/2041B01D2239/065B01D2239/1233B01D2275/40B01D2239/1291B01D2239/0672B01D2279/30B01D2239/0407B01D2239/0695B01D46/10B01D2239/0492B01D2275/105B01D46/527
Inventor I·谢尔德曼斯F·韦斯切夫J·范达默E·兰伯特
Owner NV BEKAERT SA
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