Electronic air-fuel mixture control system for internal combustion engine
US4705002A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 31, 1986 |
| Grant date | Nov 10, 1987 |
| Priority date | — |
| Expiry date | Mar 31, 2006 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D41/2454
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An electronic air-fuel mixture control system is adapted to an internal combustion engine to determine an optimum air-fuel ratio in dependence upon renewal of plural learning values related to a plurality of load regions of the engine. The control system is arranged to select one of the learning values in accordance with the engine load and to prohibit learning of the selected learning value when a difference between the selected learning value and the adjacent learning value is more than an allowable value determined in consideration with allowable fluctuation of the air-fuel ratio caused by change of the amount of air flowing into the engine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.