Exhaust emission control system of internal combustion engine
US6634170B2 · kind B2 · utility
42Cited by
6References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 27, 2002 |
| Grant date | Oct 21, 2003 |
| Priority date | — |
| Expiry date | Mar 27, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An exhaust emission control system of an internal combustion engine is provided which controls the oxygen concentration of exhaust passing through the exhaust emission control device according to the flow rate of exhaust flowing through an exhaust passage when the exhaust emission control device is regenerated, so that the regeneration is completed within a short period of time while the filter is prevented from being damaged by melting during the regeneration. This improves the exhaust emission control performance and reliability of the filter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.