Filter for EGR system heated by an enclosing catalyst
US6625978B1 · kind B1 · utility
Inventors
Key dates
| Filing date | Jun 7, 2001 |
| Grant date | Sep 30, 2003 |
| Priority date | — |
| Expiry date | Jun 7, 2021 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M26/50
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A device and a method for exhaust gas purification in a combustion engine comprises an arrangement (30) for recirculating exhaust gases from the engine (1) to an air intake (2) thereof. An exhaust gas purification arrangement (31) is adapted to convert constituents in the exhaust gases to less environmentally hazardous substances. A filter arrangement (32) comprises at least one filter (33) adapted to liberate the exhaust gases from particulate constituents. This filter (33) is adapted to purify EGR-exhaust gases only. According to another aspect of the invention, 2 the filter (33) is aged in heat transferring relation to at least one convener unit (34) of the exhaust gas purification arrangement so as to receive, from the convener unit, a heat addition to promote regeneration of the filter by combustion of paniculate constituents deposited therein.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.