Performance Enhancement of a Platinum-Containing Catalyst via Exhaust Gas Hydrogen Enrichment
Патенты
| Язык: |
Английский |
| Тип: |
Заявка на патент |
| Номер (11) |
WO 2022055855 A1 |
| Номер заявки (21): |
PCT/US2021/049246 |
| Дата подачи заявки (22): |
7 сент. 2021 г. |
| Дата начала отсчета срока действия патента (24): |
|
| Дата публикации патента (44,45,46): |
|
| Дата публикации заявки (43): |
17 мар. 2022 г. |
The disclosure provides a platinum-containing three-way conversion (TWC) catalyst, and a system for treating an exhaust gas stream from a gasoline engine using the TWC catalyst. The system is configured to introduce controlled quantities of hydrogen gas into the exhaust gas stream upstream of the platinum-containing TWC catalyst article during a cold-start period. Further provided are related methods of treating such exhaust streams. Such systems and methods are useful in reducing a level of one or more of hydrocarbons, carbon monoxide, and nitrogen oxide in a gaseous exhaust stream from a gasoline engine.