Patent ID: 8573179

Claim:
An engine ignition control apparatus, comprising: an ignition timing correction unit, the engine ignition control apparatus configured to control an idle air control valve (IACV), provided to a bypass passage bypassing a throttle valve, to reach a fully-opened position in full-open initial processing, wherein a first period from when an ignition switch is turned on until the opening degree of the IACV reaches a full opening degree includes a period during which a normal ignition timing is maintained, and thereafter a second period during which ignition timing correction is performed by switching the normal ignition timing to a fixed ignition timing on a retard side, the ignition timing correction unit configured to calculate a proportional function for an ignition timing correction value with respect to the opening degree when the opening degree of the IACV reaches the full opening degree; calculate the ignition timing correction value by use of the proportional function in accordance with a difference between an idling target opening degree and the current opening degree; and correct the ignition timing to an advance side until the opening degree of the IACV reaches the idling target opening degree.