| 摘要 |
PROBLEM TO BE SOLVED: To provide a control device for a power transmission device and perform an effective restriction of occurrence of drag toque at the time of performing a shift operation.SOLUTION: This invention comprises: an engine 10; a wet-type clutch 25 including a clutch plate 26 for cutting or connecting a rotational force transmitted from the engine 10; a change gear 30 for changing a rotational force transmitted from the wet-type clutch 25 under a prescribed transmission ratio; hydraulic circuits 40, 70 for supplying lubricant oil to the clutch plate 26; and a control valve 49 arranged in the hydraulic circuit 40 capable of shutting off the supply of lubricant oil to the clutch plate 26. After starting a speed changing operation of the change gear 30, supplying of lubricant oil to the clutch plate 26 is shut off by keeping a closed state of the control valve 49 until completion of synchronization of the change gear 30. |
