A transmission system for a vehicle, and a method for preselecting, shifting and selecting gear modes

摘要

A transmission system for a vehicle having an input arranged for connection to a drive source, and an output arranged for connection to a load, and comprising a transmission including a first input shaft, a first output shaft connected to the output, and a first speed transforming gear connecting the first input shaft and the first output shaft, and a second input shaft, a second output shaft connected to the output, and a second speed transforming gear connecting the second input shaft and the second output shaft; a first coupling member, arranged for coupling the input to the first input shaft at a first speed ratio; and a second coupling member, arranged for coupling the input to the second input shaft at a second speed ratio, Wherein the first and second speed ratios differ; and a single shifting mechanism configured to preselect, engage and/or disengage one or more coupling members of the transmission.