| 摘要 |
A hybrid drive device that switchably includes a first split mode in which an input and output rotary element are drivably coupled to each other, and a second split mode in which the speed change input rotary element and a distribution input rotary element are drivably coupled to each other. The first and second relative rotational speed ratios are set at different values such that the first ratio is a ratio of a relative rotational speed of the distribution input rotary element to a relative rotational speed of the output rotary element determined on the basis of a rotational speed of a reaction force rotary element, and the second ratio being a ratio of a relative rotational speed of the second output rotary element to a relative rotational speed of the first output rotary element determined on the basis of a speed of the fixed rotary element.
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