Method of feedback controlling air-fuel ratio
US4321903A · kind A · utility
19Cited by
2References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 6, 1980 |
| Grant date | Mar 30, 1982 |
| Priority date | — |
| Expiry date | Mar 6, 2000 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D41/263
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
In the method of feedback controlling the air-fuel ratio of an internal combustion engine, the feedback control is stopped for a predetermined period of time at a specified time or condition of the engine, and the air-fuel ratio is controlled in accordance with a control signal having a value corresponding to the average value of the integrated compensation signals. In addition, a factor affecting the center value of the controlled air-fuel ratio is adjusted in accordance with the output signal of a comparator circuit generated during the time that the feedback control is being stopped.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.