Detonation detection method for internal combustion engines
US5978728A · kind A · utility
11Cited by
7References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 1, 1998 |
| Grant date | Nov 2, 1999 |
| Priority date | — |
| Expiry date | Jun 1, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01L23/225
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The method includes the steps of generating a detonation signal related to the intensity of the vibration on an engine block; wide-band filtering the detonation signal; rectifying the filtered detonation signal; integrating the rectified signal; calculating the logarithm of the integration result; calculating a mean value as a function of the calculated logarithm; calculating the values of a first and second standard-deviation-related quantity as a function of the logarithm value and the mean value; and calculating a detonation coefficient value as a function of the values of the standard-deviation-related quantities.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.