| 摘要 |
PURPOSE:To improve fuel consumption by obtaining a corrected quantity based on the difference between a basic injection time obtained from an engine speed and a quantity of suction air, and a maximum basic injection time corresponding to said engine speed, and obtaining a final basic injection time. CONSTITUTION:A control circuit 30 constructed with microcomputers obtains a basic injection time from an engine speed detected by rotation sensor 16 and a quantity of suction air detected by air flow meter, and operates a corrected quantity based on the difference between the basic injection time and a maximum basic injection time corresponding to a preset engine speed. Then, this corrected quantity is added to the maximum basic injection time, to obtain a final basic injection time. Thereby, a quantity of suction air with a reliable operation value can be obtained even when dispersion occurred in the detected signal from the air flow meter 11 resulting from the dispersion in the quantity of suction air at the time of a high load in an engine. Accordingly, an over-rich or an over- lean condition can be prevented from taking place, improving fuel consumption, restraining reduction in output and, further, relieving knocking. |
