| 摘要 |
PROBLEM TO BE SOLVED: To reduce man-hours in initial setting of parameters, and conform to temporal change and individual difference of engine characteristics by automatically optimizing control parameters such as an adhesion ratio and evaporation ratio. SOLUTION: A wide range air-fuel ratio sensor is installed on an exhaust pipe. A parameter estimation means 14 is arranged for estimating an adhesion ratio, evaporation ratio and removal ratio of the fuel based on the air-fuel ratio measured by the sensor and a fuel injection amount. A parameter characteristics correction means 15 is arranged for correcting the corresponding relations between various sensed results of the engine and the adhesion ratio, evaporation ratio, removal ratio, based on the estimation result. A proper fuel injection amount is thereby determined. Plural corresponding relations are allowed according to the operation conditions. |
