Dual-clutch transmission and method for controlling a dual-clutch transmission

摘要

Dual-clutch transmission (1) with two sub-drive trains each having a transmission input shaft (7, 8) and a plurality of between the transmission input shaft (7, 8) and an output (16) switchable forward gears and at least one between a transmission input shaft (7) and the output (16 ) switchable reverse gear and two the transmission input shafts (7, 8) associated with a drive unit (2) connected friction clutches (4, 5), the transferable clutch torque is assigned by means of one in a control unit (28) stored clutch characteristic of a travel, of adjusting units is set, wherein the assignment of the clutch characteristics to the travel during initial or reconnection takes place, characterized in that at a given clutch torque actual travel paths of both friction clutches (4, 5) be in one engaged in a partial drive train forward gear and in the other part of the drive train reverse gear be i put in operation drive unit (2) are determined by the friction clutches from an open state in the closing direction adjusted and the behavior of the drive unit (2) and the output (16) are evaluated, the output (16) is kept free of load, and wherein a constant speed of the output (16) is adjusted and, taking into account the translations of the forward and reverse gear and the torque of the drive unit (2), the clutch torques of the two friction clutches (4, 5) determined and assigned to the corresponding actual control values.