Patent ID: 7204784
Filing Date: 2007-04-17
Classification: B60K,B60L,B60W,F16H,Y02T,Y10T

Abstract:
1. An apparatus for controlling a gear ratio changing operation in a transmission comprising: an internal combustion engine; a multi-stage synchromesh-type transmission capable of shifting in accordance with a vehicle driving condition; a clutch positioned between the internal combustion engine and the transmission and capable of transmitting and interrupting a driving torque between the internal combustion engine and the transmission; clutch controlling means for controlling the clutch; a motor positioned at an output shaft of the transmission and configured to generate an assist driving torque; target assist driving torque calculating means for calculating a target assist driving torque generated by the motor; and assist driving torque controlling means for controlling, in response to transmission and interruption by the clutch of the driving torque between the internal combustion engine and the transmission, the motor to generate the target assist driving torque, wherein, while transmission of the driving torque between the internal combustion engine and the transmission is being cut off during a clutch control at a constant stroke speed from an engaged state to a disengaged state for a shift operation in the transmission, the assist driving torque controlling means controls the motor to generate an assist driving torque so that the assist driving torque reaches the target assist driving torque at a constant rise rate per time.