Active hydrocarbon trap for reduction of emissions from internal combustion engines using an electrically-heated catalyst
US12228056B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 20, 2023 |
| Grant date | Feb 18, 2025 |
| Priority date | — |
| Expiry date | Dec 20, 2043 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A device for reducing emissions from an internal combustion engine having a close-coupled catalyst including an electrically-heated catalyst and a hydrocarbon trap disposed downstream of the close-coupled catalyst. The device includes a heat exchanger and a liquid water knockout disposed downstream of the close-coupled catalyst. The device includes a valve-less system configured to dynamically adjust a flow path of exhaust from the internal combustion engine through the electrically-heated catalyst and the hydrocarbon trap to reduce emissions. A method for reducing emissions including feeding an exhaust gas from the internal combustion engine to the close-coupled catalyst, producing a catalyzed exhaust gas. The method includes flowing the catalyzed exhaust gas from the close-coupled catalyst to the valve-less system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.