FUEL CONTROL SYSTEM

PURPOSE:To inject the fuel at the amount same as in a normal condition even when the injector is replaced, by providing a correcting means to correct the intake air amount signal corresponding to the fuel injection capacity of an injector, and a fuel control means to control the injection amount of the injector. CONSTITUTION:An air flow meter 1 outputs a signal Si corresponding to the air amount to be taken in an engine. An air amount converting device 2 inputs the signal Si, it is multiplied with a coefficient according to the fuel injection capacity of injectors IJ1 to IJ4, and the result is output to an engine control unit(ECU) 3 as an air amount signal So. The ECU 3 inputs the air amount signal So, calculatee an air amount q depending on the air amount signal So, and outputs injector driving signals S1b to S4b to the injectors IJ1 to IJ4. When the injectors IJ1 to IJ4 are replaced, a correkting means corrects the intake air amount Q according to the fuel injection capacity of each injector. By such a way, the fuel of the same amount and almost in the same injection timing as in the normal condition can be injected.