Patent ID: 8583336

Claim:
A power transmission control apparatus for a vehicle comprising: a transmission which includes a first input shaft for receiving power from a drive source of a vehicle, a second input shaft for receiving power from the drive source, an output shaft for outputting power to drive wheels of the vehicle, a first mechanism section which selectively establishes any one of a plurality of gears or one gear, including first gear and being a portion of all the gears to thereby form a power transmission system between the first input shaft and the output shaft, and a second mechanism section which selectively establishes any one of a plurality of gears or one gear, including second gear and being the remaining gear(s) to thereby form a power transmission system between the second input shaft and the output shaft; a first clutch which selectively achieves an engaged state so as to form a power transmission system between the output shaft of the drive source and the first input shaft or a disengaged state so as to cut off the power transmission system and which can adjust a clutch torque that is the maximum torque which can be transmitted by the first clutch in the engaged state; a second clutch which selectively achieves an engaged state so as to form a power transmission system between the output shaft of the drive source and the second input shaft or a disengaged state so as to cut off the power transmission system and which can adjust a clutch torque that is the maximum torque which can be transmitted by the second clutch in the engaged state; and control means for selecting one gear as a selected gear on the basis of a movement of a shift operation member of the vehicle and/or a traveling state of the vehicle, for controlling a mechanism section selected from the first and second mechanism sections and corresponding to the selected gear so as to establish the selected gear, for controlling, in this state, a clutch selected from the first and second clutches and corresponding to the selected mechanism section so as to bring the selected clutch into the engaged state, and for controlling an unselected clutch different from the selected clutch so as to bring the unselected clutch into the disengaged state, wherein, when the vehicle starts, the control means selects either one or both of the first and second clutches as a start clutch used for driving the vehicle, and adjusts the clutch torque(s) of the selected clutch(es) so as to bring the selected clutch(es) into a half-engaged state, which is an engaged state in which slippage is involved, to thereby start the vehicle.