| 摘要 |
<P>PROBLEM TO BE SOLVED: To improve fuel consumption while suppressing the hunting of engine speed during idling. <P>SOLUTION: A deviation dnenes between an actual measurement value of the engine speed and a target idling speed, a difference dneneav between the actual measurement value of the engine speed and an average movement value of the actual measurement value are obtained, and ignition timing is corrected based on a first ignition timing map describing the relationship between dnenes and dneneav, and the correction amount of the ignition timing. When a predetermined phenomenon that predicts the hunting of the engine speed is detected, the ignition timing is corrected based on a second ignition timing map where the correction amount is set to be larger than the first ignition timing map. <P>COPYRIGHT: (C)2012,JPO&INPIT |
