| 摘要 |
PURPOSE: A method for controlling the transmission of a dual clutch transmission is provided to improve a torque transmission effect and transmission by performing a pre-selection through the control of a synchronization device in a 4-2 quick down transmission. CONSTITUTION: A current transmission signal, a vehicle speed signal, an acceleration signal, and an RPM(Revolutions Per Minute) are detected through an RPM sensor, an acceleration sensor to sense the pushing of an acceleration pedal, a vehicle speed sensor, and a transmission sensor(101). A first clutch is released through a slip control and a second clutch engaged with a third shift gear is slip-controlled in a 4-2 quick down transmission based on a vehicle speed signal, a transmission signal, and an acceleration signal. The first clutch is engaged with a fourth shift gear to transmit engine torque(105). If the RMP is a first target value calculated by a three shift gear ratio or less and a slip amount of a second clutch is a first preset valve, a pre-selection is performed by synchronizing with a second shift gear through the control of a second synchronization device(113). The first clutch is directly controlled at the synchronization point of the second shift gear through the slip control. If the RPM approaches a second target calculated by a second shift gear ratio, the first clutch is completely connected and the second clutch is completely released(121). |
