Systems and method for monitoring urea level
US8047046B2 · kind B2 · utility
2Cited by
2References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 5, 2009 |
| Grant date | Nov 1, 2011 |
| Priority date | — |
| Expiry date | Feb 26, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F25/24
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A sensor diagnostic system comprises first, second, and third dosing agent sensors and a control module. The first, second, and third dosing agent sensors indicate whether a dosing agent is present at first, second, and third volumetric levels of a dosing agent tank, respectively. The second volumetric level is greater than the first volumetric level and the third volumetric level is greater than the second volumetric level. The control module selectively diagnoses a sensor fault in at least one of the first, second, and third dosing agent sensors based on the indications of the first, second, and third dosing agent sensors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.