Reduction of tailpipe emissions from gasoline internal combustion engines with a combination of sorbents
US12123333B2 · kind B2 · utility
0Cited by
6References
7Claims
0Family size
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Key dates
| Filing date | Nov 21, 2022 |
| Grant date | Oct 22, 2024 |
| Priority date | — |
| Expiry date | Nov 21, 2042 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01N2900/1626
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An exhaust treatment system includes an engine, an exhaust line in fluid communication with the engine, a three-way catalyst downstream of the engine on the exhaust line, a particulate filter downstream of and proximate to the three-way catalyst on the exhaust line, and a sorbent unit comprising a first sorbent and a second sorbent downstream of the three-way catalyst and the particulate filter on the exhaust line. The first sorbent and the second sorbent are proximate to a tailpipe of the exhaust line. A method of treating an exhaust emission from an internal combustion engine during an engine cold-start is also described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.