Method for reducing urea deposits in an aftertreatment system
US9273576B2 · kind B2 · utility
1Cited by
2References
19Claims
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Key dates
| Filing date | Aug 17, 2010 |
| Grant date | Mar 1, 2016 |
| Priority date | — |
| Expiry date | Aug 16, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
Various systems and methods are described for controlling a diesel aftertreatment system coupled to an exhaust system of an engine which includes a selective catalytic reduction (SCR) catalyst and a diesel particulate filter (PF). In one example, a threshold amount of urea injected to the SCR catalyst is adjusted based on an amount of soot generated by the engine and the total amount of urea injected to the SCR catalyst is limited by the threshold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.