Control device for a vehicle having a steering device, steering device and method for heating a working medium in a preheating phase for a steering device

A steering device for a vehicle, comprising:

• a pump device with a pump for pumping a working medium to a first output port or a second output port of the pump device and an electric motor for driving the pump;
• a transmission with an input shaft that is couplable to a steering wheel and an output shaft that is couplable to a steering column lever, a transmission element movable for transmitting a torque from the input shaft to the output shaft in a first direction and a second direction, and a first working medium port and a second working medium port, wherein the first working medium port for moving the transmission element in the first direction using the working medium is connected to the first output port and the second working medium port for moving the transmission element in the second direction using the working medium is connected to the second output port;
• a valve connected between the first output port and the second output port;
• and
• a control unit configured to:
• provide a motor signal to the electric motor of the steering device to operate the electric motor in a preheating phase for heating the working medium, and
• provide a valve opening signal to the valve for opening the valve of the steering device;
• wherein the pump and the electric motor have a common shaft and are arranged in a common housing;
• wherein the housing has a channel for conducting the working medium from an inlet along an inner wall of the housing to a motor winding of the electric motor, which is located on a stator of the electric motor, and the channel is shaped to conduct the working medium around the motor winding;
• and
• wherein a rotor of the electric motor has a plurality of permanent magnets, wherein adjacent ones of the plurality of permanent magnets are spaced apart by slots for passing the working medium through.