Engine knock detecting system
US5115779A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 31, 1991 |
| Grant date | May 26, 1992 |
| Priority date | — |
| Expiry date | May 31, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An engine knocking detecting system is disclosed, which comprises an engine vibration sensing device which produces a signal which represents a vibration of an engine; an engine speed sensing device which produces a signal which represents the speed of the engine; parallelly arranged band-pass filters to which the vibration representative signal from the engine vibration sensing device is fed simultaneously, the band-pass filters having respective pass-bands which are not overlapped; and a knocking judging device for judging whether the engine is under knocking or not by analyzing the output signals issued from the band-pass filters and the engine speed representative signal from the engine speed sensing device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.