Abnormal combustion detection method for internal-combustion engines from several combustion indicators
US8359909B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 2, 2010 |
| Grant date | Jan 29, 2013 |
| Priority date | — |
| Expiry date | Apr 15, 2031 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D2041/286
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An abnormal combustion detection method is disclosed for spark-ignition internal-combustion engines, from combustion indicators. Combustion indicators, such as CA10 and MIP, are determined which are converted to new indicators having lower dispersions than those of indicators for normal combustions that are not converted. A parameter characterizing a distribution of N values of the new combustion indicators, acquired over N cycles preceding the cycle in progress, is then determined. The start of an abnormal combustion is thereafter detected by comparing this parameter with a 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.