Patent ID: 8113077

Claim:
A dual clutch transmission comprising: an odd-numbered forward traveling speed drive train group including at least one odd-numbered forward traveling speed drive train for setting an odd-numbered forward traveling speed; an even-numbered forward traveling speed drive train group including at least one even-numbered forward traveling speed drive train for setting an even-numbered forward traveling speed; a plurality of backward traveling speed drive trains for setting respective backward traveling speeds; a first clutch adapted to be engaged so as to activate the odd-numbered forward traveling speed drive train group; a second clutch adapted to be engaged so as to activate the even-numbered forward traveling speed drive train group, wherein at least one of the first and second clutches is adapted to be engaged so as to activate at least one of the plurality of backward traveling speed drive trains; a reverse mode setting means for setting a reverse mode; and a reverser operation means for shifting a forward/backward traveling direction of a vehicle, the reverser operation means being shiftable between a forward traveling position and a backward traveling position, wherein, while the reverse mode is set by the reverse mode setting means and the reverser operation means is shifted between the forward traveling position and the backward traveling position, the first and second clutches are alternately engaged/disengaged for a forward/backward traveling speed shift between the backward traveling speed set by the at least one backward traveling speed drive train and a forward traveling speed set by any one forward traveling speed drive train of the odd-numbered or even-numbered forward traveling speed drive train group activated by engaging the first or second clutch which is different from the first or second clutch adapted to be engaged for activating the at least one backward traveling speed drive train so that, during the alternate engagement/disengagement shift of the first and second clutches, an engagement action of one of the first and second clutches overlaps a disengagement action of the other of the first and second clutches.