Switched drive transmission for commercial vehicle has input shaft selectively coupled to coaxial main shaft and parallel gearing shaft

摘要

The switched drive transmission (4) has an input drive shaft (1) coupled to a coaxial main transmission shaft (3) and to a parallel gearing shaft (2) via respective switched couplings, with an incorporated synchromesh device (5), under control of a drive ratio switching device employing switching cylinders or valves.