| 摘要 |
PROBLEM TO BE SOLVED: To provide a control device for an engine to perform fuel injection from an injector, whereby it is practicable to minimize the influence of a drop of source voltage associated with fuel injection upon the drive of an auxiliary unit. SOLUTION: Duty signal to drive the actuator for an auxiliary unit has a period Ta consisting of the On-duty T1 and Off-duty T2, and if Ta becomes identical to the fuel injection period Ti as shown in (A), a drop of source voltage associated with fuel injection is overlapped on all On-duty T1 to cause the duty ratio to drop, and it is not possible to drive the auxiliary unit properly. Therefore, the probability of such drop of source voltage overlapping the On- duty T1 is decreased by dislocating the period Ta' of duty signal with respect to the fuel injection period Ti as shown in (B), and it is possible to suppress the drop of the duty ratio to the minimum.
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