PURPOSE: To have accurate control of the air-fuel ratio of an engine by providing a step in which the output signal from an air-fuel ratio sensor is subjected to an integrating process, and a memory processing step in which the information about correctin of the amount of fuel injection is put in memory according to the condition of the engine.
CONSTITUTION: Suction pipe 3 is equipped with a suction amount sensor 11 and a suction temperature sensor 12. The engine 1 is equipped with a cooling water temperature sensor 13 while the exhaust manifold 6 is equipped with an air-fuel ratio sensor 14 to detect the air-fuel ratio form the oxygen density in the exhaust gas. A rotation speed sensor 15 emits the pulse signal with a frequency in compliance with the revolving speed of crank shaft. The control circuit 20 calculates the amount of fuel injection on the basis of detection signals by sensors 11-15 and controls the time for opening the fuel injection valve 5 for adjustment of the amount of fuel injection.
KONDOU TOSHIO
KOBAYASHI AKIO
ISOMURA SHIGENORI
| JPS5368315A | 1978-06-17 | |||
| JPS5420231A | 1979-02-15 |