Method of real time-estimation of indicators of the combustion state of an internal-combustion engine
US7467040B2 · kind B2 · utility
8Cited by
13References
20Claims
0Family size
Assignee
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Key dates
| Filing date | Aug 28, 2007 |
| Grant date | Dec 16, 2008 |
| Priority date | — |
| Expiry date | Aug 28, 2027 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D2200/025
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A method of real-time estimation of indicators of the engine combustion state from signals containing oscillating components. A signal, such as a vibration signal for example, correlated with the engine combustion, is acquired as a function of time or of the crank angle. Real-time filtering and time-frequency analysis of this signal is carried out and indicators of the combustion state are estimated in real time from this analysis. The method has application for combustion control of an internal-combustion engine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.