| 摘要 |
A hybrid drive system has an engine ( 11 ); a motor-generator ( 16 ); a transmission ( 12 ) for converting drive force inputted from at least one of the engine ( 11 ) and the motor-generator ( 16 ) and transmitting the converted drive force to a drive wheel ( 15 ); a first rotating shaft ( 41 ), a second rotating shaft ( 42 ) and a third rotating shaft ( 43 ) disposed mutually in parallel. The drive system includes a first gear wheel ( 21 ) disposed coaxially with the first rotating shaft ( 41 ); a first clutch ( 31 ) for engaging/disengaging the first gear wheel ( 21 ) with/from the first rotating shaft ( 41 ); a second gear wheel ( 22 ) disposed coaxially with the second rotating shaft ( 42 ); a second clutch ( 32 ) for engaging/disengaging the second gear wheel ( 22 ) with/from the second rotating shaft ( 42 ); a third gear wheel ( 23 ), engaging with the first gear wheel ( 21 ) or the second gear wheel ( 22 ) and disposed coaxially with the second rotating shaft ( 42 ) or the first rotating shaft ( 41 ); and a third clutch ( 33 ) for engaging/disengaging the third gear wheel ( 23 ) with/from the first rotating shaft ( 41 ) or the second rotating shaft ( 42 ). The motor-generator ( 16 ) is connected to the first rotating shaft ( 41 ). The engine ( 11 ) is connected to the third rotating shaft ( 43 ). The transmission ( 12 ) includes an input disc ( 12 a) connected to the third rotating shaft; an output disc ( 12 b) disposed coaxially with the input disc; and a power roller ( 12 c) sandwiched in a tiltable fashion between the input disc and the output disc.
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