Method and apparatus for measuring detonation in an internal combustion engine
US4895121A · kind A · utility
11Cited by
19References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 16, 1988 |
| Grant date | Jan 23, 1990 |
| Priority date | — |
| Expiry date | Sep 16, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and apparatus is provided for measuring detonation in an internal combustion engine. Vibration sensors located on the engine send signals through a filter which is turned to the cavity resonance of the engine's cylinders. The peaks and valleys of the filtered signals are detected and ratiometrically compared one with another to determine the magnitude of detonation. The detonation information may be used by an engine control to retard timing in response to a predetemined level of detonation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.