Method and apparatus for detecting a misfire in a combustion chamber of an internal combustion engine
US5153834A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 10, 1992 |
| Grant date | Oct 6, 1992 |
| Priority date | — |
| Expiry date | Feb 10, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In order to determine the characteristics of combustion which takes place in the combustion chamber of an internal combustion engine, the pressure in the chamber is sampled at predetermined intervals over a predetermined sampling range, the values are mathematically processed in a manner to obtain the position of center of gravity for the instant combustion and the COG position is then compared with pre-recorded data to determine the actual nature of the combustion. Embodiments of the invention improve on the COG position derivation by screening the data with respect to the highest of the sampled values or modifying all of the data with respect to the lowest of the sampled values.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.