| 摘要 |
PURPOSE:To prevent an air-fuel ratio from sliding from a target air-fuel ratio at the time of switching of using characteristic of a fuel injection valve in a fuel injection type engine which is provided with two intake passages opposing to each cylinder and being provided with fuel injection valves in respective intake passage. CONSTITUTION:In a rotary engine RE, first and second independent intake passages 6, 7 are provided opposing to respective cylinders 1, a first fuel injection valve 15 is provided downstream from the first independent intake passage 6, a second fuel injection valve 16 is provided upstream from the second independent intake passage 7, and an air flow amount control valve 28 is provided in the second independent intake passage 7. Condition for switching using characteristic of a fuel injection valve is changed according to opening/closing of the air flow amount control valve 28, shift of an air-fuel ratio which is caused at the time of switching using characteristic of the fuel injection valve is prevented regardless of opening/closing of the air flow amount control valve 28, and running performance is improved. |
