Spark knock detection system for an internal combustion engine
US5483936A · kind A · utility
Inventors
Key dates
| Filing date | Jul 5, 1994 |
| Grant date | Jan 16, 1996 |
| Priority date | — |
| Expiry date | Jul 5, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01L23/225
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A spark knock detection system is disclosed which has a vibration detector connected in proximity to the engine for converting a vibration into an electrical output signal representative of the vibration. A sampler which is connected to the vibration detector samples the electrical output signal and converts the electrical output signal into a numerical data pattern corresponding to the electrical output signal. A feature extractor which is connected to the sampler converts the numerical data pattern into frequency domain signal portions which have a magnitude. A classifier which is connected to the feature extractor receives the frequency domain signal portions. The classifier has predetermined coefficients for classifying the frequency domain signal portions to indicate the presence of spark knock.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.