Importance

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Abstract

Disclosed is an apparatus for controlling the fuel injection quantity for an internal combustion engine. The apparatus includes an operating condition detecting unit for detecting the operating conditions of an internal combustion engine on the basis of the engine speed and the intake air amount or the internal pressure of an intake pipe, a purge control variable calculating unit for calculating the amount of the purge control on the basis of the detected operating conditions, an A/F ratio learning and calculating unit for learning the deviation from the desired A/F ratio control by inputting the effect of the disturbance due to the canister purge and performing the A/F ratio feedback control, a memory unit for storing the deviation learned by the calculating unit, and a fuel injection quantity calculation means unit for determining the fuel injection quantity by the amount of correction based on the result of the learned deviation and the A/F ratio deviation obtained by the A/F ratio control.

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First Claim