| 摘要 |
PROBLEM TO BE SOLVED: To stabilize fuel injection by calculating the idling fuel injection amount after the completion of start of an engine while applying the frictional force on the basis of the number of revolutions at the start of the engine and the battery voltage as an intial value of I value of the proportional integral(PI) feedback control. SOLUTION: The PI feedback control is executed on the basis of the difference between the target number of revolutions DRPM and the actual number of revolutions RPM of an engine immediately after the depature from the start of the engine. On this occasion, an initial value Qi0 of an integrating (I) term of the fuel injection amount given by Qi=Qio+KiΣ(DRPM-PRM), (ki constant) is determined on the basis of the number of revolutions of the engine at the start of engine (before the completion of start) and the battery voltage, and the fuel injection amount Q including the fuel injection amount Qi determined by substituting Qi0 in a formula is output by an operating means as an idling fuel injection amount immediately after the completion of start of the engine, That is, Qi0 of I term of the fuel injection amount is determined by the number of revolutions of the engine at the start of the engine and the battery voltage. As the I term obtained on the basis of the frictional force is applied as the initial value of the fuel injection amount, the fuel injection control can be stabilized.
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