Abnormal combustion detection method for internal-combustion engines
US8068972B2 · kind B2 · utility
18Cited by
3References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 28, 2009 |
| Grant date | Nov 29, 2011 |
| Priority date | — |
| Expiry date | Feb 13, 2030 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M26/20
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The invention is an abnormal combustion detection method for spark-ignition internal-combustion engines. For each engine cycle, a parameter characterizing a distribution of N combustion indicator values, CA10 for example, acquired over N cycles preceding the cycle in progress, is determined while ignoring extreme values. A threshold is defined from this parameter for the combustion indicator. The start of an abnormal combustion is then detected by comparing the combustion indicator with this threshold and the course of the abnormal combustion detected in the combustion chamber is controlled.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.