Offset detection for fuel level sensor fault
US11131573B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 1, 2017 |
| Grant date | Sep 28, 2021 |
| Priority date | — |
| Expiry date | Aug 3, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F25/20
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Methods and apparatus are provided for determining an offset detection for a fuel level sensor fault. The method includes receiving an electrical resistance reading from a potentiometer of a fuel level sensor and generating an estimated fuel level based on an established fuel usage table that references the electrical resistance reading. The fuel level sensitivity is calculated based on the change in electrical resistance readings divided by the change in the estimated fuel levels (R/F). The fuel level sensitivity is compared to a predetermined sensitivity curve to determine any necessary offset to the electrical resistance reading. Finally, the fuel usage table is updated with the offset to the electrical resistance reading.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.