Methods of control of nitrogen oxide and hydrocarbon emissions from small engines
US6174504A · kind A · utility
7Cited by
12References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 28, 1997 |
| Grant date | Jan 16, 2001 |
| Priority date | — |
| Expiry date | Mar 28, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method of reducing the amounts of nitrogen oxides and hydrocarbons in the exhaust gas from a small, gasoline-fueled utility engine operating fuel-rich, while not reducing the amount of carbon monoxide in said exhaust gas, comprising treatment of said exhaust gas by a catalyst consisting essentially of rhodium supported on an alumina-based washcoat applied to a substrate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.