| 摘要 |
<p>PURPOSE:To prevent the overshooting by detecting idling state, starting the feedback control for the bypass valve duty when the engine speed is reduced the value higher than the target speed by the specified value. CONSTITUTION:When detecting the idling state at the time of the input of the signal from an idle switch, an electronic controller circuit 64 sends a duty value to a bypass valve 62 and makes the feedback control to control the engine speed to the target idling speed, however, if the engine speed is directly reduced to the idling speed, the overshooting effect may be developed. To avoid this, the electronic controller circuit 64 makes direct feedback control even if detecting the idling state, and starts said control when the engine speed is reduced to the value higher than the target value by the specified value (e.g., 400r.p.m.). Thus the engine speed at the idling time may be controlled precisely to the target value without overshooting the engine speed.</p> |
