Process for reducing nitrogen oxides on SCR catalyst
US6399034B1 · kind B1 · utility
20Cited by
5References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 27, 2000 |
| Grant date | Jun 4, 2002 |
| Priority date | — |
| Expiry date | Jan 27, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process for reducing nitrogen oxides on a SCR catalyst disposed in an exhaust gas system of an internal combustion engine is performed by a device adapted to introduce ammonia (NH3) into the exhaust gas flow of the exhaust gas system before it reaches the SCR catalyst. The device includes a heatable pressure-tight converter, an NH3 store and a control unit with control signals processing engine operating characteristics and determining therefrom the NOx output for controlling a timed valve for injection of an NH3 dose.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.