| 摘要 |
An electronic fuel injection control system for an internal combustion engine includes means for controlling the exhaust gas recirculation valve by using a plurality of different sets of predetermined valve opening command values which are functions of ambient atmospheric pressure and other parameters of operating condition of the engine, and are set such that the exhaust gas recirculating rate can be maintained constant irrespective of changes in the atmospheric pressure, by the use of these command values, and means for correcting the injection period for fuel being supplied to the engine in dependence upon ambient atmospheric pressure and intake pipe absolute pressure, whereby the air/fuel ratio of the mixture is maintained at an optimum value against changes in the ambient atmospheric pressure even when the exhaust gas recirculation is effected.
|
