Fuel injection control apparatus

Abstract

Calculating an acceleration corrective in response to a subtle change in a throttle action by utilizing first and second rate-of-change calculators to calculate rates of change DθTHA, DθTHB of a throttle opening in preceding first and second periods (second period>first period) per a predetermined crankshaft rotational angle). A maximum value updater updates a stored value in a maximum value memory with a greater one of past and present maximum rates of change DθTH of the throttle opening, based on a compared result from a comparator. Points in a plurality of cycles read from a point calculator based on the maximum rate of change DθTH of the throttle opening are added together and inputted to a corrective value calculator. If the total of points is equal to or greater than a preset value, then an acceleration corrective quantity calculated by the corrective value calculator depending on the maximum value of rates of change of the throttle opening is supplied to a fuel injection time calculator, which calculates a fuel injection time Ti in view of the acceleration corrective quantity.

Dependencies are inferred from the claim text.