METHOD OF AND DEVICE FOR CONTROLLING A MULTI-STAGE CHANGE GEAR TRANSMISSION

摘要

A multi-stage change gear transmission having a main group of gear sets which can be made selectively effective and serially arranged therewith is a power flow stage consisting of parallel flow paths of respectively different transmission ratios and each including a friction clutch with the clutches adapted to be made alternately effective. The clutches provide for subdivision of the change in drive ratio when shifting from one gear set to the next. Also disclosed are control systems for controlling the gear sets and the friction clutches.