| 摘要 |
<p>PROBLEM TO BE SOLVED: To make a vehicle power transmission device exert effective vibration control performance in a wide input rotation number range by combining a centrifugal pendulum type damper and a toroidal gear change mechanism.SOLUTION: A vehicle power transmission device comprises a centrifugal pendulum type damper 15 and a two-stage type toroidal gear change mechanism 18. In the centrifugal pendulum type damper 15, at high-speed cruising or the like in which the number of revolutions of an engine E is low, vibration control performance is lowered, however, at this time, the toroidal gear change mechanism 18 is increased in a speed ratio and also increased in an inertia mass, a vibration transmission rate between the engine E and drive wheels W is decreased, and thereby a vibration/noise property of a vehicle can be enhanced by compensating the lowering of the vibration control performance of the centrifugal pendulum type damper. In particular, since the toroidal gear change mechanism 18 is constituted to a two-stage type having an input disc 27, an intermediate disc 29 and an output disc 28, an inertia mass can be increased by expanding the speed ratio compared with a one-stage type, the vibration transmission rate can be effectively lowered, and the vibration control performance can be enhanced.</p> |
