| 摘要 |
A rotational frequency control apparatus of an internal combustion engine comprising a bypass route bypassing a throttle valve provided to an intake pipe of internal combustion engine, an intake control valve which controls an intake amount of this bypass route, an intake drive and control device which drives and controls open and close conditions of this intake control valve, and moreover, an intake amount sensor which detects the intake amount of the intake pipe, a rotational frequency sensor which detects a rotational frequency of the engine, a rotational frequency adjusting part which generates a target intake amount based on an actual rotational frequency detected by the rotational frequency sensor and a target rotational frequency, an intake amount adjusting part which outputs an intake control signal based on the target intake amount and the actual intake amount detected by the intake amount sensor, a switching part which causes both adjusting parts to make output operations under an unloaded condition of the engine and switches an operation mode to a stop mode while the engine transfers to a loaded operating condition, and a memory means which stores the target intake amount outputted from the rotational frequency adjusting part and the intake control signal outputted from the intake amount adjusting part under the unloaded operating condition and also holds and outputs, in the loaded operating condition, a final target intake amount and final intake control signals under the unloaded operating condition.
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