Closed-loop air-fuel ratio controller
US5263358A · kind A · utility
5Cited by
3References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 28, 1992 |
| Grant date | Nov 23, 1993 |
| Priority date | — |
| Expiry date | Feb 28, 2012 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D41/1479
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Oxygen sensor temperature and switching frequency compensation is provided to engine air-fuel ratio control, wherein the drift in the sensor voltage corresponding to stoichiometry is modeled and accounted for in the control, providing improved accuracy in conventional closed-loop engine air-fuel ratio control.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.