Method for carrying out gear reduction of robotized gearbox of motor vehicle, involves performing tension application and synchronizer's actuation to carry out activated disengagement of claw as soon as gear ratio passage order is received

摘要

The method involves applying disengaging tension of a claw having initial gear ratio, by controlling torque capacity of a clutch to be higher than motor torque. A synchronizer is actuated for transmitting wheel torque corresponding to a request of a driver of a vehicle to reduce the torque in the claw such that the claw is disengaged under the conjugated effect of the tension and torque reduction in the claw. The application of the tension and the synchronizer's actuation are performed to carry out activated disengagement of the claw (101) as soon as a gear ratio passage order is received. An independent claim is also included for a claw gearbox of a motor vehicle, comprising actuators.