Oxidation catalyst for a lean burn internal combustion engine
US9140167B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 21, 2011 |
| Grant date | Sep 22, 2015 |
| Priority date | — |
| Expiry date | Dec 21, 2031 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J37/0225
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An apparatus is disclosed. The apparatus comprises a lean-burn internal combustion engine, engine management means and an exhaust system for treating exhaust gas of the engine. The exhaust system comprises a first oxidation catalyst disposed on a first honeycomb monolith substrate. The first oxidation catalyst comprises platinum supported on a first metal oxide support comprising at least one reducible oxide, and is substantially free of alkali metals and alkaline earth metals. The engine management means is arranged, when in use, intermittently to modulate the lambda composition of the exhaust gas entering the first oxidation catalyst to a rich lambda composition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.