To provide a vehicle motor drive using a two-way roller clutch for reducing vibration and abnormal noise when a pressed accelerator pedal is released and pressed again.
The vehicle motor drive includes: an input shaft 7 to which rotation of an electric motor 3 is input; a first-speed input gear 9A and a second-speed input gear 9b provided on the input shaft 7; a first-speed output gear 10A and a second-speed output gear 10B engaging with the first-speed input gear 9A and the second-speed input gear 9B, respectively; a two-way roller clutch 16A for a first speed; a two-way roller clutch 16B for a second speed; and a motor torque control device 59 for the electric motor 3. The motor torque control device 59 executes control so that the electric motor 3 is used for generating torque to hold the two-way roller clutch 16A for a current shift stage at an engaging position when the accelerator pedal 61 is not pressed.
| JPH0512807 | [Name of device] Transmission |
Higashio Masahiro
Takayoshi Tagawa
Yaichiro Nakatani
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