Control arrangement for vehicles having a hydrostatic auxiliary drive

A control arrangement for vehicles having a hydrostatic auxiliary drive for one or more axles, comprising

• a drive motor;
• driven rear wheels coupled to the drive motor;
• further wheels, connectable via allocated hydraulic motors and which are activated by a hydraulic pump coupled with the drive motor and has an adjustable feed volume, wherein each wheel is connected to a hydraulic motor without a clutch;
• a sensor to detect the rotational speed of the rear wheels and a sensor to detect the rotational speed of the drive motor;
• an electronic control device configured to receive the rotational speed signals of the rear wheels and the drive motor and which controls the hydraulic motors as a function of the rotational speed;
• and
• wherein the hydraulic pump and hydraulic motors are activated electrically and are continuously variable and the hydraulic pump is connected directly, without valves, to the hydraulic motors in parallel by hydraulic lines, wherein each hydraulic motor has an allocated rotational speed sensor whose respective speed signals are received by the control device, and wherein the control device controls the respective displacement volume of the hydraulic motors only as a function of the rotational speed signals from the sensors.