| 摘要 |
PURPOSE: An ignition time control method of an engine for a vehicle is provided to prevent sudden increase or decrease of engine rpm in braking and to stabilize rpm by correcting ignition time according to difference between target engine rpm and actual engine rpm. CONSTITUTION: The state of a brake switch is detected in satisfying the ignition time control condition in idling of an engine after stopping a vehicle(S100,S110,S120). The idle feedback control and the spark idle stabilization are forbidden according to the operation of the brake switch, and ignition time is controlled with correcting according to difference between the target engine rpm and the actual engine rpm during the predetermined time(S130,S140,S150,S160,S170). The idle feedback is controlled, and spark idling is stabilized in passing the predetermined time of ignition time correction. Sudden increase or decrease of rpm is prevented, and engine rpm is stabilized by correcting ignition time according to rpm difference.
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