FUEL INJECTION CONTROL APPARATUS HAVING ATMOSPHERIC PRESSURE CORRECTION FUNCTION

摘要

An apparatus for controlling a quantity of fuel injected into an internal combustion engine comprises a sensor for detecting atmospheric pressure, a sensor for detecting a load condition of an internal combustion engine, and an electronic control device including a microprocessor. The CPU functions to perform the processing steps including: step of setting a reference fuel injection quantity in accordance with a load condition of the engine, step of detecting a transient condition of the engine, step of setting a transient correction value in accordance with the transient condition of the engine, step of correcting the transient correction value to be decreased as the atmospheric pressure decreases, and step of setting a quantity of injection fuel supplied to the engine in accordance with the set value of the reference fuel injection quantity and the corrected transient correction value, whereby a deviation of an air fuel ratio from an appropriate value can be prevented even under a transient condition where atmospheric pressure varies.