| 摘要 |
PROBLEM TO BE SOLVED: To provide a drive device for a hybrid vehicle capable of preventing reverse rotation of torque in switching of operation mode. SOLUTION: The drive device 2 is provided with a differential mechanism 7 in which two pairs of planetary gear mechanisms 21, 22 are combined with each other. The differential mechanism 7 has five rotation elements of a sun gear S1, a ring gear R2, a carrier Cr, a ring gear R1 and a sun gear S2 which can be differential-rotated with one another. An internal combustion engine 3 is connected to the sun gear S1, an output shaft 6 is connected to the sun gear S2, a first motor generator 4 is connected to the ring gear R1 or the ring gear R2, and a second motor generator 5 is connected to the carrier Cr or the sun gear S2, respectively. A mode switching mechanism 8 switches the operation mode by changing connection relationship of the respective motor generators 4, 5 relative to the differential mechanism 7. COPYRIGHT: (C)2009,JPO&INPIT
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