Automatic transmission system and automotive

    公开(公告)号:JP3873065B2

    公开(公告)日:2007-01-24

    申请号:JP2004162099

    申请日:2004-05-31

    CPC classification number: Y02T10/6226 Y02T10/6295

    Abstract: PROBLEM TO BE SOLVED: To provide an automatic transmission capable of realizing smooth and efficient transmission control without using a clutch by incorporating a motor in the transmission and controlling torque and the number of revolutions. SOLUTION: A first gear row input shaft of the parallel shaft type transmission having two sets of gear shift gear rows is connected with an engine, a second gear row input shaft is connected with the engine through a motor, and torque of the first gear row is temporarily moved to the second gear row by the motor to switch a gear of the first gear row during that time. Gear ratio of the second gear row is used as an intermediate step of gear ratio of the first gear row to reduce motor capacity and battery capacity and dispense with the clutch in order to provide the economical transmission device. Torque transition gear shift for up-shift and down-shift becomes possible by performing active gear shift by the motor. Moreover, jumping-over gear shift so far impossible conventionally becomes possible to obtain continuous ratio in order to improve driving property. COPYRIGHT: (C)2005,JPO&NCIPI

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