Process and device for the decontamination of the exhaust gases from an internal combustion engine
US7225611B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 21, 2004 |
| Grant date | Jun 5, 2007 |
| Priority date | — |
| Expiry date | Nov 28, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
Process for the decontamination of the emissions from an internal combustion engine (1), the exhaust line (5) of which is equipped with a particle filter (7), characterized in that an NOx trap additive is added to the fuel, so that the said additive is found trapped within the soot, and in that, at the time of the regenerations of the particle filter (7), the engine (1) is controlled with a richness balance according to at least one alternation of a lean-mixture phase and of a rich-mixture phase, in order to bring about the adsorption of the NO2 from the exhaust gases by the said additive during the lean-mixture phase or phases and to bring about the oxidation of the soot particles by the adsorbed NO2 during the rich-mixture phase or phases.Device for the implementation of this process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.