| 摘要 |
PROBLEM TO BE SOLVED: To improve output performance and combustion efficiency while suppressing knocking and combustion inferiority caused by a change of humidity, by controlling control ignition timing corrected in accordance with humidity under a total region load condition. SOLUTION: A device comprises a means 10 determining basic ignition timing Qo in accordance with a load condition L and a rotational speed Re, means 11 calculating an ignition timing correction amount Qc in accordance with humidity M, means 12 calculating a reflection rate K of the ignition timing correction amount in accordance with at least one of the load condition, rotational speed and a temperature T and a means 13 calculating control ignition timing Q from the basic ignition timing, ignition timing correction amount and the reflection rate. From the ignition timing correction amount in accordance with a change of humidity and the reflection rate K in accordance with the operating condition, the control ignition timing Q is correction controlled adjacent to minimum ignition advance timing MBT obtaining maximum torque, generation of knocking is prevented, and output performance and combustion efficiency are improved. |
