| 摘要 |
A transmission apparatus for a vehicle includes a shift spindle having a clutch actuator, and also includes a shift actuator adapted to operate a shift drum. The apparatus also includes a motor for rotating the shift spindle, and a controller for controlling the motor. In use, the clutch actuator is rotated prior to the shift actuator when the shift spindle is rotated to a shift-down side. The controller rotates the shift spindle to a shift-up side and stores, as a standard duty, a driving duty of the motor at the time when a rotary angle of the shift drum reaches a drum angle threshold. Then, the controller rotates the shift spindle to a shift-down side, and learns a rotary angle of the shift spindle at the time when the standard duty is generated, as a touch point at which the clutch is initially partially engaged. |
| 主权项 |
1. A transmission apparatus for a vehicle, comprising:
a main shaft to which rotary power of an engine is routed through a clutch, and which is provided with a plurality of drive gears including a drive-side shifter gear; a countershaft provided with a plurality of driven gears including a driven-side shifter gear, the driven gears rotated by the plurality of drive gears; a plurality of shift forks configured to move the drive-side shifter gear and the driven-side shifter gear in an axial direction; a shift drum provided with a lead groove for engagement with end portions of the shift forks; a drum angle sensor configured to detect a rotary angle of the shift drum; a shift spindle provided with a clutch actuator configured to operate the clutch, and also with a shift actuator configured to operate the shift drum; a spindle angle sensor configured to detect a rotary angle of the shift spindle; a motor configured to rotate the shift spindle; and a controller configured to control the motor; wherein the clutch has a partial engagement state between a fully engaged state and a disengaged state thereof, wherein, when the shift spindle is rotated to a shift-down side, the clutch actuator is rotated prior to the shift actuator, and wherein during operation of the apparatus, the controller rotates the shift spindle to a shift-up side and stores, as a standard duty, a driving duty of the motor at the time when the rotary angle of the shift drum reaches a drum angle threshold, thereafter rotates the shift spindle to a shift-down side, and learns a rotary angle of the shift spindle at the time when the standard duty is generated, as a touch point at which the clutch is put into the partial engagement state. |
