Patent ID: 8935966
Filing Date: 2015-01-20
Classification: F16D,F16H,Y10T

Abstract:
1. A dual clutch transmission apparatus comprising: a first clutch that transmits or interrupts torque from a crankshaft to a first main shaft; a second clutch that transmits or interrupts torque from the crankshaft to a second main shaft; an output shaft to which the torque on the first main shaft is transmitted through an odd-numbered transmission gear mechanism, and to which the torque on the second main shaft is transmitted through an even-numbered transmission gear mechanism; a transmission mechanism that changes an engagement between gears in the odd-numbered transmission gear mechanism and the even-numbered transmission gear mechanism; and a transmission control unit that is arranged and programmed to, at a start of a drive operation of a vehicle, shift from a clutch selected from the first and second clutches on a higher transmission gear side to a clutch selected from the other of the first and second clutches on a lower transmission gear side by controlling the first and second clutches with predetermined odd-numbered and even-numbered transmission gears, respectively, in a set state, through the transmission mechanism; wherein at the start of the drive operation of the vehicle, with the vehicle in a state in which a total torque capacity of the first and second clutches is set to a value necessary to start the drive operation of the vehicle, the transmission control unit shifts the first and second clutches by gradually increasing the torque capacity of the clutch on the lower transmission gear side curvilinearly according to a difference in clutch rotational speed on the lower transmission gear side, while at the same time gradually reducing the torque capacity of the clutch on the higher transmission gear side.