METHOD OF CONTROLLING AIR FUEL RATIO

摘要

This invention is an electronical fuel supply control apparatus of an internal combustion engine for automobiles. This control apparatus divides the operating condition of engine into operating regions acoording to the items like revolution speed and load magnitude, and performs the control according to the correction factor learned and set up on each operating regions. This control includes a method to preserve the correction factors in several independent memory data groups; a first data group made up of the correction factors for control, a second data group made up of the factors being successively changed by the result of the learning based on feedback control, and a third data group made up of the factors to determine the timing of rewriting the first group's factors.