| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a vehicular motor driving device wherein a time of torque release in time of a gear shift changeover is shortened. <P>SOLUTION: This vehicular motor driving device includes a first deceleration gear train 23 and a second deceleration gear train 24 between a first shaft 21 and a second shaft 22 rotationally driven by an electric motor 10. Two-way roller clutches 30A, 30B are incorporated in between the second shaft 22 and a first output gear 23b of the first deceleration gear train 23, and between the second shaft 22 and a second output gear 24b of the second deceleration gear train 24, and engagement between the two-way roller clutches 30A, 30B and disengagement are controlled by a gear shift changeover actuator 50. When changing over a shift step, a motor torque of the electric motor 10 is changed after a friction plate 52a of the two-way roller clutch 30A of the present shift step is separated, and the engagement of the two-way roller clutch 30A of the present shift step is released. <P>COPYRIGHT: (C)2011,JPO&INPIT |
