| 摘要 |
PURPOSE:To enable execution of normally optimum control, by a method wherein, when a control signal by means of which running of an engine is computed in a plurality of steps, a part of a plurality of the steps are thinned out in a running region where a change in detection of a running state is slow. CONSTITUTION:During running of an engine, in a control unit 5, a thinning-out decision plug, adapted to decide thinning-out of measurement of an in-stroke suction air amount, is turned over at each crank angle interruption routine. The number of revolutions determined from an output from a crank angle sensor 3 is the decided. When the number of revolutions is below a decision value, a flag decision being thinning-out decision is passed, and in-stroke suction air amount measurement processing is executed. Meanwhile, when exceeding the given value, flag decision by a decision flag is effected, when a flag is 1, in-stroke suction air amount measurement is effected, and when it is 0, the periodic measurement is passed. Namely, when the number of revolutions exceeds a given value, in-stroke suction air amount measure is performed on time each time interruption routine is made two times.
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