| 摘要 |
There is provided a system for controlling an idling speed of in engine, comprising an engine speed sensor provided to detect an engine speed and produce an engine speed signal indicative thereof, and a control unit provided to derive a physical amount corresponding to an engine torque being balanced with an engine friction around a predetermined target idling speed in response to the engine speed signal, and calculate a fuel injection amount to be injected by an injector and an opening degree of an idling speed control valve, both appropriate to the derived physical amount. There is further provided a method for controlling an idling speed of an engine, comprising detecting an engine speed, deriving a physical amount corresponding to an engine torque being balanced with an engine friction around a predetermined target idling speed in response to the engine speed, and calculating a fuel injection amount to be injected by an injector and an opening degree of an idling speed control valve, both appropriate to the derived physical amount.
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