| 摘要 |
PURPOSE:To follow up controllably air fuel ratio with high accuracy by providing a means for correcting a skip amount of a feedback correction amount, a means for correcting integral items and a means for figuring out proportional items of the feedback correction amount. CONSTITUTION:In step 101 is judged whether air fuel ratio is rich or lean, and in step 103 is set a specified value to skip amount Rs of a feedback correction amount R. In step 105 is obtained integral item R1 of feedback correction amount. In step 106 is set fuel variation to the proportional item RP of feedback correction amount. In step 107 are added skip amount Rs, integral item RI and proportional item RP to obtain the feedback correction amount. Thus, the air fuel ratio can be controllably followed up with high accuracy in the transient running condition of an engine. |
