VEHICLUAR DRIVE TRAIN COMPRISING A MULTI-GROUP TRANSMISSION AND GEAR CHANGE PROCESS FOR A MULTI-GROUP TRANSMISSION

摘要

The invention relates to a motor vehicle drive train device comprising a multi-group transmission (10) that has a main group (11), an upstream group (12) upstream of the main group (11) and/or a downstream group (13) downstream of the main group (11), and a control and/or regulation unit (14) that is intended to shift the upstream group (12) and/or the downstream group (13) to neutral at least in a transmission gear change operation (15) before engaging of a target gear in the main group (11). The invention proposes that the control and/or regulation unit (14) is provided for shifting the upstream group (12) and/or downstream group (13) to neutral in the transmission gear change operation (15) only after at least partial synchronisation of the main group (11).