ENGINE CONTROL DEVICE

摘要

An initial explosion is reliably obtained at the engine start at which a crank pulse alone is insufficient to identify the stroke, and the engine rotation is increased. In a period from cranking start to stroke detection, fuel is injected once for each revolution of the crank shaft and prior to suction stroke or expansion stroke, and ignition is effected once for each revolution of the crank shaft and at or around the upper dead point, whereby an initial explosion is obtained without reversing the rotation of the engine. When the stroke is detected, fuel injection and ignition are effected once for each cycle. When the engine rpm does not rise above a predetermined value, the ignition timing is made such that ignition is effected prior to compression upper dead point and at or around 10°on the advance angle side, whereby the engine rpm quickly increases. Stroke detection is permitted after the engine rpm has risen above the predetermined value so that the engine rpm may stabilize.