Abstract: A water-based refrigerant for a thermal working machine. The refrigerant for a thermal working machine (150) having an evaporator (A), a condenser (B), a compressor (CGL), and a throttle element (D). The refrigerant is based on water and comprises a refrigerant component with a hydroxyl group, for example in the form of ethanol. The use of such a mixture as a refrigerant for a thermal working machine and for a thermal working machine having such a refrigerant, and to a method for operating a thermal working machine having such a refrigerant is also disclosed.

Abstract: A water-based refrigerant for a thermal working machine. The refrigerant for a thermal working machine (150) having an evaporator (A), a condenser (B), a compressor (CGL), and a throttle element (D). The refrigerant is based on water and comprises a refrigerant component with a hydroxyl group, for example in the form of ethanol. The use of such a mixture as a refrigerant for a thermal working machine and for a thermal working machine having such a refrigerant, and to a method for operating a thermal working machine having such a refrigerant is also disclosed.

Abstract: A force sensor is suitable for an electrohydraulic hitch control system of an agricultural tractor. The force sensor has an outer cylindrical part with a bore and a measuring rod fixed on one side in the bore. A central section of the cylindrical part is provided as force introduction section. Two outer sections of the cylinder part are removed equally far axially from the center of the force introduction section and are provided as abutment sections. The measuring rod is clamped in an area of the force introduction section.

Abstract: The invention relates to a spindle compressor without operating fluid in the working space with a 2-tooth spindle rotor and a 3-tooth spindle rotor in a surrounding compressor housing-and preferably non-parallel rotation axes of the two spindle rotors, in particular for use in compression refrigeration machines.

Abstract: A force sensor is suitable for an electrohydraulic hitch control system of an agricultural tractor. The force sensor has an outer cylindrical part with a bore and a measuring rod fixed on one side in the bore. A central section of the cylindrical part is provided as force introduction section. Two outer sections of the cylinder part are removed equally far axially from the center of the force introduction section and are provided as abutment sections. The measuring rod is clamped in an area of the force introduction section.

Abstract: The invention relates to a spindle compressor without operating fluid in the working space with a 2-tooth spindle rotor and a 3-tooth spindle rotor in a surrounding compressor housing-and preferably non-parallel rotation axes of the two spindle rotors, in particular for use in compression refrigeration machines.

Abstract: A method is provided for operating a motor vehicle. The motor vehicle includes, but is not limited to a coupling device designed for connecting the motor vehicle to a trailer. The method comprises determining as to whether there is a connection between the motor vehicle and a trailer with the coupling device takes place. In addition, detecting a traffic sign arranged in a surrounding region with the first sensor takes place, in the case that it is determined that there is a connection between the motor vehicle and the trailer with the coupling device, a determining as to whether the detected traffic sign includes a specific traffic regulation for motor vehicle combinations with a trailer takes place, based on data determined by a first sensor.

Abstract: The disclosure relates to a mobile working machine with a control device, comprising a working arm, and methods for controlling the operating point of a working arm of a mobile working machine. According to the disclosure, the mobile working machine with the control device, comprising a working arm, has a working arm, a first end of which is hinged to a superstructure of the working machine. A tool is movably arranged on a second end of the working arm at an operating point. At least one first inclination sensor lies on the superstructure and at least one second inclination sensor lies on the working arm. In addition, at least one hydraulic cylinder is provided for changing the position of the operating point, said cylinder being hinged between the superstructure and the working arm.

Abstract: The disclosure relates to a mobile working machine with a control device, comprising a working arm, and methods for controlling the operating point of a working arm of a mobile working machine. According to the disclosure, the mobile working machine with the control device, comprising a working arm, has a working arm, a first end of which is hinged to a superstructure of the working machine. A tool is movably arranged on a second end of the working arm at an operating point. At least one first inclination sensor lies on the superstructure and at least one second inclination sensor lies on the working arm. In addition, at least one hydraulic cylinder is provided for changing the position of the operating point, said cylinder being hinged between the superstructure and the working arm.

Abstract: A support method for speech dialogs for operating motor vehicle functions by means of a speech dialog system for motor vehicles in which a non-speech signal is output in addition to the speech output. Speech dialog systems, which form an interface for communication between man and machine, are disadvantageous when compared with communication between persons because, in addition to the primary information content of the speech dialog, additional information about the state of the other party to the communication, which is conveyed visually in the case of communication between people, is missing. The present invention overcomes this disadvantage in a speech dialog system whereby non-speech signals are output as an auditory signal to the user as a function of the state of the speech dialog system.