| 摘要 |
PURPOSE:To aim at a distinct improvement in antistallingness, by discriminating an idling speed with a ratio between an idle switch and a car speed and an engine speed. CONSTITUTION:A something modellizing the dynamic characteristics of an internal-combustion engine 12, an actuator and a sensor is stored in a controller, while a combination of a bypass air quantity PA, ignition timing IT, a fuel feed quantity and an exhaust reflux quantity is set down to the control input and also an idling speed is set down to the control input whereby a state variable representing an inner state is estimated from the input and output of control. Then, using an integral value of a deviation SA between a desired value Nr and an actual value N of the idling speed, a control input valve is determined and the idling speed of the internal-combustion engine 12 is feedback-controlled to meet the desired value, through which a judgement for whether the idling speed is right or wrong is attained with a ratio between a throttle valve switch and a car speed plus an engine speed. Thus, an antistallingness at high-speed driving is improved. |
