Method of controlling the air/fuel ratio for an internal combustion engine mounted on a vehicle
US4844041A · kind A · utility
5Cited by
6References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 3, 1988 |
| Grant date | Jul 4, 1989 |
| Priority date | — |
| Expiry date | Mar 3, 2008 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D41/2477
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A method of controlling the air/fuel ratio for an internal combustion engine set a base value of air/fuel ratio control in accordance with detected engine parameters, and the base value is corrected by a base correction value in order to compensate for the error of the base value. The speed of change in the correction value in the learning control operation is increased when the engine speed is low, or for a predetermined time period after a hot starting of the engine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.