Air/fuel ratio controller for engine
US4908765A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 25, 1987 |
| Grant date | Mar 13, 1990 |
| Priority date | — |
| Expiry date | Nov 25, 2007 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D41/1456
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Disclosed herein is an air/fuel ratio controller for an engine, which is equipped with a function to make the air/fuel ratio leaner in a light-load operation zone or the like of a lean burn engine. The controller is intended to improve the starting performance and acceleration feeling of the engine significantly. Upon generation of an acceleration command by a driver during lean burn of the engine at a lean air/fuel ratio, an air/fuel ratio enriching device is operated to set the air/fuel ratio of an air-fuel mixture, which is to be fed to the engine, at a level richer than the lean air/fuel ratio while an actually accelerated state continues in the engine from the time point of generation of the acceleration command.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.