| 摘要 |
PURPOSE:To prevent a throttle valve from causing its excessive closing in an electronic rotary speed controller, by stopping a servo device for a prescribed time when the throttle valve is changed to an artificially not opened state and then starting control of rotary speed. CONSTITUTION:An idle detector switch 62 is firstly decided for if turned on or not in a control module 20, in case of off decision, a throttle valve is artificially opendd, then a throttle actuator 18 is stopped, while in case of an decision, the switch 62 is checked for if immediately after turned on or not, if not immediately turned on, control of rotary speed is immediately performed. This decision is performed by whether the precedent state of the switch is in an off state or not. In a case immediately after turned on, a throttle actuator stop holding time To is obtained from engine speed Ns at that time, and the actuator 18 is stopped, with the lapse of time control of engine speed is started. Accordingly, a throttle valve 42 can be prevented from being excessively reduced to decrease speed beyond the target speed No. |
