| 摘要 |
PROBLEM TO BE SOLVED: To judge an operating condition of an engine precisely, and achieve engine control such as suitable fuel injection control by setting an acceleration/ deceleration judgment of an engine to a judging cycle which is long to the utmost, and judging the judgment of acceleration/deceleration on the basis of an intake air rate per prescribed rotating angle of a rotary shaft. SOLUTION: In an ECU 40, a suction intake rate Q is found out from an output signal of an air flow meter 21, and also a suction intake rate changeΔQL is calculated, and it is judged whether the suction intake rate changeΔQL is larger a prescribed valueαor not. When 'YES' is judged, a suction intake rate QIST, at the time of a previous performance is read at a cycle shorter than a rotary angle synchronous timing of an engine. An intake rate Qf sucked into a cylinder is predicted, and also an accelerating judgment flag F showing the detection of an accelerating condition is set to 1. A newest suction intake rate Q is converted into a suction intake rate Q1 . In the case where acceleration is judged, a suction intake predicting rate Qf is employed as a referential intake rate Qa for deciding a fuel injection rate.
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