Active shift transmission, transmission control unit and automobile

摘要

The invention relates to a transmission, control units for that transmission on a vehicle using the same. The object of the invention is to provide a less expensive active transmission control system for an automobile, capable of disconnecting an engine (1), without increasing the number of dog clutches. In an active shift transmission, a second intermediate shaft (53) is provided between a transmission input shaft (36) connected with an engine (1) and a transmission output shaft (3), and the transmission ratio is determined by the product of gear ratios of two sets of transmission gears. Further, a differential gear box (31) is connected between both intermediate shafts (39, 53) and a motor (5) is connected to the third shaft of this differential gear box (31), so that the engine torque is borne by the motor (5) on a temporary basis, whereby active transmission is performed. When the transmission gear of the input shaft (36) is released, the engine rotation loss at the time of regenerative braking can be eliminated by disconnecting the engine (1).