POWER TRANSMISSION SYSTEM

摘要

PROBLEM TO BE SOLVED: To reduce the capacity of a change gear, and to improve a power transmission efficiency in a power transmission system for transmitting the power of an engine to a load.

SOLUTION: A planetary gear mechanism 20 provided in parallel to a change gear 14 synthesizes torque from an engine 10 transmitted to a ring gear R with torque from a motor generator 22 transmitted to a sun gear S in such a state that their torque ratio equals to a predetermined ratio, and transmits the synthesized torque from a carrier CR to a driven wheel 40. When releasing a clutch C1 and a brake B1, and performing power transmission between the engine 10 and the driven wheel 40 via both the change gear 14 and the planetary gear mechanism 20 in such a state that clutches C1 and C3 are engaged, the torque of the motor generator 22 is controlled so that it is possible to actively control the distribution of a power to be transmitted to the change gear 14 and a power to be transmitted to the planetary gear mechanism 20.

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