| 摘要 |
An ignition control system for an internal combustion engine includes a throttle opening detector, a crank angle detector, a stroke determiner, and an ignition timing corrector. The throttle opening detector detects a throttle opening of a throttle valve disposed in an intake passage of the internal combustion engine. The crank angle detector detects a crank angle signal associated with the rotation of a crankshaft of the internal combustion engine. The stroke determiner determines a stroke based on the crank angle signal. The ignition timing corrector corrects ignition timing in a retardation direction by a predetermined retardation angle when the throttle valve is rapidly opened to a predetermined throttle opening and then rapidly closed within a predetermined time period including one combustion cycle of the internal combustion engine. The stroke determiner defines the combustion cycle. The predetermined retardation angle is based o n at least the throttle opening.
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