Method and device intended for desulfation of a nitric oxide trap and regeneration of a particle filter
US7918082B2 · kind B2 · utility
1Cited by
10References
15Claims
0Family size
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Key dates
| Filing date | Nov 24, 2004 |
| Grant date | Apr 5, 2011 |
| Priority date | — |
| Expiry date | Nov 24, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method is intended for desulfation of a nitric oxide trap (22) and regeneration of a particle filter (24) arranged in an exhaust line (20) for treating exhaust gas from an internal-combustion engine (10), notably a Diesel engine. The saturation rate of the trap and the clogging rate of the filter are evaluated and, as soon as one of the rates reaches a threshold value, the fuel/air ratio of the exhaust gas is increased without it reaching a fuel/air ratio of 1, then desulfation of trap (22) is performed in association with regeneration of particle filter (24).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.