Closed loop fuel control system with air/fuel sensor voting logic
US4224910A · kind A · utility
19Cited by
1References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 10, 1979 |
| Grant date | Sep 30, 1980 |
| Priority date | — |
| Expiry date | Apr 10, 1999 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D41/26
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
In a closed loop air and fuel ratio controller for an engine, an air/fuel sensor is responsive to the engine exhaust gases to provide a signal representing the air/fuel ratio of the mixture supplied to the engine. The output of the sensor is sampled N times during each of successive sampling periods and the number of samples indicative of a rich mixture versus the number of samples indicative of a lean mixture is utilized to provide an output representing a rich or lean error input to the closed loop controller.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.