| 摘要 |
A transmission is provided which has a very compact system configuration and is capable of exerting high energy efficiency over all speed regions from a low speed region to a high speed region, while providing improved operability free from a torque shortage. To this end, the transmission has an input shaft 3 , an intermediate output shaft 8 , a planetary gear mechanism 9 , a first pump-motor 7 , and a second pump-motor 15 connected to the first pump-motor 7 , the input shaft 3 being coupled to a first element (planetary carrier 12 ) of the planetary gear mechanism 9 , the second pump-motor 15 being coupled to a second element (sun gear 19 ) of the planetary gear mechanism 9 , the intermediate output shaft 8 being coupled to a third element (ring gear 16 ) of the planetary gear mechanism 9 , and the transmission further comprising a switching mechanism (synchromesh mechanism 6 ) for selectively coupling the first pump-motor 7 to either the input shaft 3 or the intermediate output shaft 8.
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