Device for purifying the exhaust gas of an internal combustion engine
US6837043B2 · kind B2 · utility
4Cited by
7References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 18, 2003 |
| Grant date | Jan 4, 2005 |
| Priority date | — |
| Expiry date | Apr 18, 2023 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01N2610/03
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A device for purifying the exhaust gas of an internal combustion engine includes a particulate filter carrying an active-oxygen releasing agent that can cause the sulfur poisoning, a SOx trap unit arranged upstream of the particulate filter, and a bypass section for making the exhaust gas mainly bypass said particulate filter when SOx is released from the SOx trap unit. Further, an exhaust choke valve for an exhaust brake is arranged between the SOx trap unit and the exhaust gas branch portion of the bypass section.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.