System and method for providing engine diagnostic and prognostic information
US6553816B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 16, 1999 |
| Grant date | Apr 29, 2003 |
| Priority date | — |
| Expiry date | Sep 16, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A system and method for obtaining engine diagnostic and prognostic information utilizing current, time and crank position data obtained from the starter motor during the starting of an engine and represented as a starter motor current waveform. The time domain waveform is transformed to the spatial domain. Thereafter, the spatial waveform is deconvolved into its constituent components using known digital signal processing, such as Fourier Transformations, and along with derived engine parameters provide engine status and diagnostic information. Weibull techniques may be used to further process the engine status and diagnostic information to improve accuracy.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.