| 摘要 |
PURPOSE: A system and a method for controlling the kick-down shift of an automatic transmission on a hill are provided to prevent the occurrence of a run-up shock by correcting a power on/off deciding condition depending on a power on/off deciding map. CONSTITUTION: A vehicle travel state sensing unit(10) senses the signals outputted from an atmospheric pressure sensor(11), a throttle valve opening degree sensor(120), a vehicle speed sensor(13), a speed range sensor(14), a turbine rpm sensor(15), an engine rpm sensor(16), and a kick-down switch(18) and outputs corresponding electrical signals. An engine control unit(20) decides the travel state on a hill and outputs a corresponding control signal. A transmission control unit(30) outputs a control signal by applying a target turbine change ratio map corrected depending on the reduced target turbine change ratio in kick-down shifting on the hill and outputs a transmission control signal corresponding to the kick-down shifting after reducing the turbine change ratio and correcting a power on/off deciding condition. A drive unit(40) performs kick-down shifting with response to the kick-down shifting control signal.
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