System, method, and apparatus for determining aftertreatment fluid quality
US8863504B2 · kind B2 · utility
3Cited by
6References
27Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 30, 2010 |
| Grant date | Oct 21, 2014 |
| Priority date | — |
| Expiry date | Apr 27, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A method includes determining a first NOx conversion efficiency (η) value and determining that a diesel exhaust fluid (DEF) level has increased a threshold amount. Further, the method includes determining a second NOx conversion η value and comparing the first NOx conversion η value and the second NOx conversion η value, determining a NOx conversion η change in response to comparing, and determining a DEF quality indicator in response to the NOx conversion η change.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.