Patent · US Active

Method of removing particulates from exhaust gases, and corresponding fiber layer, particulate filter, exhaust system and vehicle

US8012244B2 · kind B2 · utility

1Cited by

6References

24Claims

0Family size

Assignees

EMITEC Gesellschaft fuer Emissionstechnologie mbH · DE
Toyota Motor Corporation · JP

Inventors

Peter Hirth · Rösrath, DE
Rolf Brück · Bensberg, DE
Thomas Härig · Eppstein, DE

Key dates

Filing date	Jul 9, 2007
Grant date	Sep 6, 2011
Priority date	—
Expiry date	Jun 4, 2029

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S55/30
WIPO fieldChemical engineering
WIPO sectorChemistry

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.