| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a power-split continuously variable transmission capable of increasing a transmission gear ratio width while avoiding expansion of the placement space of a constant transmission mechanism, and also simplifying the structure of a mode switching mechanism.SOLUTION: A power-split continuously variable transmission comprises: a continuously variable transmission mechanism 10 capable of continuously changing the speed of input rotation; a constant transmission mechanism 13 changing the speed of the input rotation at a predetermined transmission gear ratio and transmitting the resultant input rotation to an output side of the continuously variable transmission mechanism 10; and a synthesizing planetary gear mechanism 15 synthesizing the output rotation of the continuously variable transmission mechanism 10 with the rotation transmitted from the constant transmission mechanism 13, the constant transmission mechanism 13 including a transmission-gear-change planetary gear mechanism 14 provided on an input side of the continuously variable transmission mechanism 10, accelerating or decelerating the input rotation, and transmitting the resultant input rotation to the synthesizing planetary gear mechanism 15, and the transmission-gear-change planetary gear mechanism 14 including a wet brake 14d fixing a ring gear 14f.</p> |
