Air-fuel ratio control system for internal combustion engine
US6292739A · kind A · utility
18Cited by
4References
35Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 17, 1999 |
| Grant date | Sep 18, 2001 |
| Priority date | — |
| Expiry date | Dec 17, 2019 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D2041/1433
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An allowable range (adaptive allowable range) for limiting a manipulated variable generated in order to converge the difference between an output from an O.sub.2 sensor disposed downstream of a catalytic converter and a target value thereof to "0" is sequentially updated depending on how the manipulated variable deviates from the allowable range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.