Engine air/fuel control system with an adaptively learned range of authority
US5566662A · kind A · utility
5Cited by
15References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 2, 1995 |
| Grant date | Oct 22, 1996 |
| Priority date | — |
| Expiry date | Oct 2, 2015 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D41/248
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An engine air/fuel control system is disclosed having one feedback correction loop generating a feedback variable by essentially integrating the output of an exhaust gas oxygen sensor. A second feedback loop adaptively learns a feedback correction from the difference between the feedback variable and its desired value such as unity. A range of authority for the total air/fuel controller is adaptively learned from the learned correction value to maximize the correction which may be applied by the feedback variable under all operating conditions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.