Patent ID: 8668622

Claim:
A shift control method for an automated gearshift transmission, the method comprising the steps of: arranging the transmission between a drive motor and an axle drive in a drivetrain of a motor vehicle; providing the transmission with both an input shaft and a plurality of unsynchronized gear clutches; providing an automatically controllable separator clutch for coupling the input shaft to a driveshaft of the drive motor; providing a transmission brake in driving connection with the input shaft; providing a gear clutch of a target gear, which is one of the plurality of unsynchronized gear clutches; and synchronizing the target gear for an upshift by: fully disengaging the separator clutch; applying a substantially constant braking torque (MBr) via the transmission brake; and completing synchronization by: partially engaging the separator clutch as an input speed (n GKE ) of the gear clutch of the target gear approaches an output speed (n GKA ) of the gear clutch of the target gear, and re-disengaging the separator clutch and releasing the transmission brake at approximately a same time.