| 摘要 |
PURPOSE:To control an optimum fuel quantity according to whether or not an exhaust gas recirculation flow is present as reducing a capacity of a memory device by subtracting a basic fuel correction value from a basic fuel supply quantity based on plural operation parameters when an exhaust gas recirculation control device is operated. CONSTITUTION:An electronic control unit 5 receives detection values from a throttle valve opening sensor 4, suction pipe absolute pressure sensor 8, suction air temperature sensor 9, water temperature sensor 10, engine speed sensor 11, O2 sensor 15, atmospheric pressure sensor 16, starter switch 17, lift sensor 24 of an EGR valve 19, etc. The electronic control unit 5 sets a basic fuel injection quantity according to an absolute suction pressure and an engine speed, and controls the EGR valve 19 through solenoid valves 21 and 22. When the EGR valve 19 is open, a basic fuel correction value according to the absolute suction pressure and the engine speed is set and subtracted from the basic fuel injection quantity. |
