Method and system using a filter for treating exhaust gas having particulate matter
US8512657B2 · kind B2 · utility
9Cited by
9References
34Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 31, 2011 |
| Grant date | Aug 20, 2013 |
| Priority date | — |
| Expiry date | Aug 31, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S55/30
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A filter for filtering particulate matter (PM) from exhaust gas emitted from a positive ignition engine or a compression ignition engine, which filter comprising a porous substrate having inlet surfaces and outlet surfaces, wherein the inlet surfaces are separated from the outlet surfaces by a porous structure containing pores of a first mean pore size, wherein the porous substrate is coated with a washcoat comprising a plurality of solid particles wherein the porous structure of the washcoated porous substrate contains pores of a second mean pore size, and wherein the second mean pore size is less than the first mean pore size.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.