A MULTI-CLUTCH TRANSMISSION FOR A MOTOR VEHICLE

摘要

A multi-clutch power shift transmission (100, 200) for a motor vehicle with at least one prime mover, where a shaft brake unit (160, 260) is arranged to reduce the rotational speed of one (121, 122) of two input shafts, and a central synchronizing unit (180, 280) is arranged to make a first (121) of said input shafts to rotate faster or slower than a second (122) of said input shafts. Said shaft brake unit and said central synchronizing unit are arranged to be simultaneously activated in order to reduce rotating speeds prior to the engagement of tooth clutches when said output shaft is not rotating. Said input shaft brake unit (260) is arranged to be used when performing a multi-step power shift.