Control device for dual clutch transmission and control method for dual clutch transmission

摘要

A dual clutch transmission includes a transmission control unit that controls action of a first clutch actuator, a second clutch actuator, and a shift mechanism; determines whether or not a clutch torque capacity for an engaging-side clutch has increased to a determination value during a clutch change period; and, if the clutch torque capacity for the engaging-side clutch has increased to the determination value, changes the torque transmission path by reducing the clutch torque capacity of a release-side clutch.

主权项

1. A control apparatus for a dual clutch transmission comprising: a first main shaft including odd-numbered transmission gears; a first clutch that transmits an engine torque to the first main shaft or blocks a transmission of the engine torque to the first main shaft; a second main shaft including even-numbered transmission gears; a second clutch that transmits the engine torque to the second main shaft or blocks the transmission of the engine torque to the second main shaft; an output shaft including driven gears arranged to mesh with the odd-numbered transmission gears and the even-numbered transmission gears, rotation from the first main shaft or the second main shaft being transmitted through the output shaft to a drive wheel; and a transmission control unit that controls the first clutch and the second clutch in a clutch interchange period to change a path of transmission of the torque to shift from a previous stage to a next stage; wherein the transmission control unit determines whether or not a clutch torque capacity of an engaging-side clutch among the first clutch and the second clutch in the next stage increases to a determination value in the clutch interchange period, and if the clutch torque capacity of the engaging-side clutch in the next stage increases to the determination value, to change the path of transmission of the torque by reducing a clutch torque capacity of a release-side clutch among the first clutch and the second clutch in the previous stage; the determination value is set to be less than a target value of the clutch torque capacity of the engaging-side clutch in the next stage; and the transmission control unit starts to reduce the clutch torque capacity of the release-side clutch in the previous stage to a target value of the clutch torque capacity of the release-side clutch when the clutch torque capacity of the engaging-side clutch in the next stage increases to the determination value so that the clutch torque capacity of the engaging-side clutch in the next stage increases to the target value of the clutch torque capacity of the engaging-side clutch in the next stage during the clutch interchange period.