Method of estimating the fuel/air ratio in a cylinder of an internal-combustion engine by means of an extended Kalman filter
US7581535B2 · kind B2 · utility
0Cited by
13References
28Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 22, 2006 |
| Grant date | Sep 1, 2009 |
| Priority date | — |
| Expiry date | Jul 30, 2026 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D2041/1431
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The present invention relates to a method of estimating the fuel/air ratio in each cylinder of an injection internal-combustion engine comprising an exhaust circuit on which a detector measures the fuel/air ratio of the exhaust gas. An estimator based on a Kalman filter is coupled with a physical model representing the expulsion of the gases from the cylinders and their travel in the exhaust circuit to the detector. The method has application to engine controls.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.