| 摘要 |
PROBLEM TO BE SOLVED: To suppress torque inputted to a transmission and a clutch as much as possible. SOLUTION: A power transmission system comprises: a first torque transmission path for transmitting torque from a driving force source to a planetary gear transmission through the transmission; and a second torque transmission path for transmitting the torque from the driving force source to the planetary gear transmission without passing through the transmission. The planetary gear transmission has a first planetary gear unit and a second planetary gear unit. Further, the planetary gear transmission 7 has a torque transmitting shaft 22 connected to an output side of the transmission 6, and a connecting drum 37 connected to a gear 20. A sun gear 27 of the first planetary gear unit 25 is connected to a torque transmitting shaft 22, the gear 20 is connected with a carrier 30 of the first planetary gear unit 25, and a ring gear 28 of the first planetary gear unit 25 is connected with an output shaft 23.
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