Urea injection controller for a motorized system
US9228467B2 · kind B2 · utility
1Cited by
2References
20Claims
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Key dates
| Filing date | Sep 10, 2013 |
| Grant date | Jan 5, 2016 |
| Priority date | — |
| Expiry date | Jan 18, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A urea injection controller for a motorized system includes a passive regeneration model configured and disposed to calculate an amount of NOx conversion resulting from an interaction between exhaust gases and soot entrained in a selective catalyst reduction filter (SCRF) device, a replenishment mode trigger module configured to set an ammonia replenishment request based on the passive regeneration model, and a replenishment control module configured to selectively activate a urea injector to discharge a particular amount of urea based on the regeneration model.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.