Method and system for controlling clutchless automatic transmission for hybrid-propelled vehicles

摘要

A method for controlling at least one gearbox actuator for transmission for a hybrid-propelled vehicle comprising a combustion engine and at least one electric machine is disclosed, the transmission comprising at least one dog clutch. A system comprising a dog clutch system comprising dogs fixed to an idle gear freely rotatable on a drive shaft, and dogs fixed to a sliding gear rotatably fixed to a primary shaft, the sliding gear comprising It is configured to move longitudinally along the axis of the drive shaft by a gearbox actuator to engage or disengage the dogs. In order to separate the dogs, the method applies an engine torque setpoint (Cm_sp) to cancel the torque (Cc) in the dog by applying the basic principle of dynamics to the dogs (6) to be separated. Calculate; Transmits the calculated motor torque set value Cm_sp to the engine until the torque in the dog follows the first decreasing slope linearly and reaches a threshold value Cs ₁ ; Compare the torque Cc in the dog with the threshold Cs ₁ ; When the torque Cc in the dog is less than or equal to the threshold value Cs ₁ , by sending a position setpoint P_cons, triggering the movement of the sliding gear 7 to separate the dogs This includes controlling the gearbox actuator 8.