Exhaust gas apparatus and method for purifying exhaust gas in internal combustion engine
US6962045B2 · kind B2 · utility
23Cited by
9References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 20, 2003 |
| Grant date | Nov 8, 2005 |
| Priority date | — |
| Expiry date | May 20, 2023 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M26/10
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A diesel particulate filter 14 that traps particulate matters in an exhaust gas and a NOx trap catalyst 13 that traps NOx in the exhaust gas are disposed in an exhaust passage (10) in an internal combustion engine (1). When a regeneration timing of the diesel particulate filter (14) and one of a regeneration timing of SOx and a regeneration timing of NOx are overlapped, the diesel particulate filter regeneration is carried out first and thereafter, the SOx regeneration or the NOx regeneration is carried out.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.