| 摘要 |
A driving force transmission apparatus is provided for a twin clutch transmission with two clutches (31, 32), which enables a gear change control without a torque cutting out, and which reduces a slapping sound of the gears by performing a pre-shift operation before the gear shift control. For instance, in an up-shift operation where a target gear shift range is set as third speed, the clutch (31) that transmits torque to the third speed gear set G3 is slip-engaged, as well as a third speed output gear 53 for the third speed gear set G3 is connected through a synchronous engagement device (28, 61 - 64) to a countershaft (35). During the pre-shift, a sub torque transmission path that is formed transmits engine torque of the engine (12), a crankshaft (13), the clutch (31), a first input shaft (33), the third speed gear set G3, the countershaft (35), and a differential gear system (14), whereby the first input shaft (33) is prevented to become idle, as well as the slapping sound of the gears in an engagement part of the third speed gear set G3 is prevented. |
