ELECTRONIC FUEL INJECTION CONTROLLER

摘要

PURPOSE:To perform atmospheric pressure correction without employing an expensive linear atmospheric sensor by providing means for calculating the atmospheric correction factor and means for correcting the fuel injection on the basis of said factor. CONSTITUTION:Means PC for calculating the atmospheric pressure correction factor will read out a correction factor corresponding with the difference between the air flow Q calculated through air flow calculating means AT and the basic air flow Q1 calculated through basic air flow calculating means BM from atmospheric pressure correction factor memory ME1 and store into atmospheric pressure correction factor memory ME3. Fuel injection calculating means CF will correct the fuel injection on the basis of the atmospheric pressure correction factor stored in the memory ME3. Consequently, the influence due to the fluctuation of Q-f characteristic of Karman sensor can be reduced resulting in relatively fine correction of the atmospheric pressure without employing an expensive linear atmospheric pressure sensor.