AIR-FUEL RATIO CONTROL DEVICE FOR ENGINE

摘要

PROBLEM TO BE SOLVED: To improve the control precision of an air-fuel ratio control device for an engine. SOLUTION: This device includes a mixture amount calculating means 51 for calculating a mixture amount Gm in response to an engine rotating speed Ne, a manifold pressure Pb and a manifold temperature Tb, a target air-fuel ratio calculating means 52 for calculating a target air-fuel ratio OBJ in response to an operated condition and a basic fuel injection amount calculating means 55 for calculating a basic fuel injection amount Gf-FF in response to the mixture amount Gm and the target air-fuel ratio OBJ.