Patent ID: 11965586
Assignee: BORGWARNER SWEDEN AB
Field: Mechanical elements (Mechanical engineering)
Classification: CPC F  B | IPC F

Claim 20:
21. A method for controlling torque distribution in a vehicle by means of an electromechanical actuator comprising an electrical motor, a first rotational member being in driving connection with the electrical motor, a second rotational member being connected to the first rotational member by means of a plurality of rolling elements such that the first rotational member and the second rotational member together form a ball ramp mechanism, and a return spring pressing the first and second rotational members towards each other, wherein the ball ramp mechanism is configured to allow for mutual rotation of the first and second rotational member up to a first torque of the electrical motor, and to allow for axial separation of the first and second rotational members at a second torque of the electrical motor, said method comprising:
receiving, a first input of a desired all wheel drive state for the vehicle and a second input of a desired state of an associated switching mechanism, if the desired state of the switching mechanism is different from a current state, applying a first torque by the electrical motor until the desired state is achieved, and if all wheel drive is desired, applying a second torque by the electrical motor until all wheel drive is achieved, wherein the second torque is greater than the first torque.