PURPOSE: To prevent fuel from deterioration of its distribution and improve the performance by actuating fuel injection valves in each air cylinder in compliance with ignition sequence of each air cylinder, in an engine which has adopted an induced turbulence genrating system equipped with small diameter of jet ports in the air inlet port.

CONSTITUTION: In a four-cylinder engine, air inlet throttle valves 40aW40d are respectively provided in air inlet paths 15aW15d to each air cylinder branched from a surge tank 14, small diameter of jet ports 44aW44d which have their opening into an air inlet port 24, and fuel injection valves 34aW34d are installed on the downstream side of the throttle valves 40aW40d. And, each fuel injection valve 34aW34d is actuated in compliance with the determined ignition sequence by means of an injection valve driving circuit 56. And said driving circuit 56 determines the injection rate by means of air flow rate signals from an air-flow meter 18 and ignition signals, and it is controlled by means of an electronic control unit 26 to give fuel injection commande signals as output.