Exhaust gas purifying system
US7763222B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 20, 2007 |
| Grant date | Jul 27, 2010 |
| Priority date | — |
| Expiry date | Aug 8, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
An exhaust gas purifying system has a honeycomb filter including a porous partition wall having a number of pores arranged so that a plurality of cells communicating between two end faces are formed, and a plugging portion disposed in either of the end faces or inside the cell so as to plug the cell; and a NOx purifying catalyst including a honeycomb catalyst carrier having substantially same shape as the honeycomb filter, and a NOx selective reducing SCR catalyst or a NOx occluding catalyst carried on surface of the partition wall and/or on surface of the pores, wherein the honeycomb filter and the NOx purifying catalytic member are disposed in this order in an exhaust gas flow path where exhaust gas discharged from a diesel engine circulates.To provide an exhaust gas purifying system which realizes excellent purifying efficiency of NOx contained in exhaust gas discharged from a diesel engine, and small pressure loss, and can be mounted in limited space.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.