| 摘要 |
PURPOSE:To make a lag in an air-fuel ratio compensable so speedily, by finding a mean value of air-fuel ratio feedback compensation factors at every specified time and, when this mean value goes up beyond the specified range, controlling the fuel injection timing so as to cause the mean value to be approximated to the specified value. CONSTITUTION:In time of an internal-combustion engine being driven, on the basis of an output signal of a throttle switch 6 being turned to ON when a throttle value 4 is in full open and a pressure sensor 10 detecting pressure in a suction pipe at the downstream side of the throttle valve 4, the memory value stored in a random access memory inside a control circuit 30 is read out. Next, a fact on whether memory conditions come into existence or not is judged from whether or not cooling water temperature by means of a water temperature sensor 20 goes up beyond the specified value as well as air-fuel ratio feedback control is going on. And, in time of a 'YES' judgment, successively a fact on whether a mean value of air-fuel ratio feedback compensation factors is within the specified range centering on the specified value or not is judged, and when 'NO' is the case, injection time for a fuel injection value 16 is controlled so as to cause the said mean value to be approximated to the specified value. |
