FUEL INJECTION CONTROLLER FOR INTERNAL-COMBUSTION ENGINE

摘要

PURPOSE:To make an air-fuel ratio so proper, by installing a compensation device which compensates an output signal out of an air flow sensor in response to the opening of a throttle valve regulating a suction air quantity and an engine speed. CONSTITUTION:An engine speed detecting circuit 103 detects an engine speed from an ignition device 9. An opening sensor 15 detects the opening of a throttle valve. A memory circuit 101 maps a compensation factor. An equalization circuit 100 equalizes an output waveform of an air flow sensor 3. A compensation circuit 102 compensates an output signal out of the equalization circuit 100 in accordance with the compensation factor of the memory circuit 101. Thus, errors in a prefiring range of the air flow sensor 3 are compensable and thereby a proper air-fuel ratio is securable.