| 摘要 |
In a control method for an automatic transmission, it is first determined if the automatic transmission is in a fourth speed and the vehicle is being driven in a power off state, then a damper clutch operation slip control signal is output when the vehicle is in a power off state. Next, an engine fuel cut-in rpm reduction signal is output to engine control unit when a damper clutch is operated by the damper clutch operation slip control signal. A lower engine fuel cut-in signal is transmitted from the engine control unit according to the output engine fuel cut-in rpm reduction signal. Then, it is determined if engine output is undergoing continuous reduction, and a duty ratio is controlled using a learned value during 4-3 shifting when engine output is being reduced. |
