Method of estimating the fuel/air ratio of an internal combustion engine
US4788854A · kind A · utility
15Cited by
1References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 7, 1987 |
| Grant date | Dec 6, 1988 |
| Priority date | — |
| Expiry date | Dec 7, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01M15/08
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A method of estimating the fuel/air ratio of the mixture supplied to an engine is described in which the in-cylinder pressure signal in a combustion cycle is processed to obtain an estimate of the fresh mixture strength supplied to the cylinder. The estimation is obtained by calculating the trapped charge mass and the total fuel mass consumed in a combustion cycle. Based on these values, the fuel/air ratio is estimated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.