System and method for detecting alternator condition
US6862504B2 · kind B2 · utility
5Cited by
26References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 10, 2002 |
| Grant date | Mar 1, 2005 |
| Priority date | — |
| Expiry date | Sep 10, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/007
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A system and method for detecting alternator condition is provided. Information is taken from the vehicle powerline and the communication links, and processed by the vehicle ECU, such as the vehicle antilocking brake system ECU, to obtain data. The battery voltage ripple amplitude is then calculated and compared at different engine speeds. If the difference in the ripple amplitude at the different engine speeds is greater than a predetermined threshold value, a signal is sent indicating that the alternator has failed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.