Process and device for detecting combustion irregularities in an engine particularly at medium and high speed
US5505079A · kind A · utility
17Cited by
14References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 7, 1994 |
| Grant date | Apr 9, 1996 |
| Priority date | — |
| Expiry date | Oct 7, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01M15/11
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The process and device are for detecting combustion irregularities in an internal combustion engine. The process consists in measuring the time intervals between the angular positions of the crankshaft, in grouping these time differences in sets of samples corresponding to each combustion phase, in calculating from each set a critical parameter that is representative of the variation in the instantaneous speed at the moment of combustion, and in comparing this parameter with a fault threshold in order to make a combustion diagnosis. Diagnosis at medium and high speeds is thus possible.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.