Method of removing particulates from exhaust gases, and corresponding fiber layer, particulate filter, exhaust system and vehicle
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United States of America Patent
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Sep 6, 2011
Grant Date -
Dec 20, 2007
app pub date -
Jul 9, 2007
filing date -
Jan 7, 2005
priority date (Note) -
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Abstract
A method for removing particulates from a gas stream includes providing a gas-permeable filter layer having subregions with a parameter of differing magnitudes in the direction of the layer thickness. This parameter relates at least to the porosity, the fiber diameter of fibers or the fiber type content of the filter layer. The gas stream is divided into partial gas streams which are each passed through different subregions of the filter layer. Fiber layers, particulate filters, exhaust systems and vehicles based on this method are also provided.
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