Engine misfire detection using system identification technology
US7032439B2 · kind B2 · utility
5Cited by
12References
12Claims
0Family size
Assignee
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Key dates
| Filing date | Sep 11, 2003 |
| Grant date | Apr 25, 2006 |
| Priority date | — |
| Expiry date | Sep 11, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01M15/11
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method of detecting misfire events in an engine uses system identification technology. A linear model is determined for estimating engine firing events based on engine speed fluctuations. The linear model is represented as a difference equation. A Kalman filter is applied to the difference equation to determine unknown parameters of the linear model. Misfire events in the engine are detected based on the linear model.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.