Perturbation control strategy for low-temperature urea SCR NOx reduction
US8176729B2 · kind B2 · utility
3Cited by
6References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 6, 2008 |
| Grant date | May 15, 2012 |
| Priority date | — |
| Expiry date | Nov 23, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An emissions control method may include injecting a fuel into an engine exhaust gas provided to a diesel oxidation catalyst (DOC) when a DOC operating temperature is greater than a first limit, terminating the injecting when a temperature of a catalyst in communication with exhaust gas exiting the DOC is greater than a second limit, and injecting a dosing agent into the exhaust gas after the terminating.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.