Abstract: A method is disclosed for monitoring the functions of a friction clutch which is arranged in a vehicle between a drive motor and a compressor of a compressed air supply system and which can be disengaged and engaged pneumatically. In a delivery mode of the compressor, at least one operating parameter is detected by sensor and evaluated in an electronic control unit. When a slipping condition of the friction clutch is identified, a value for a cut-off pressure of the compressor stored in the electronic control unit is reduced. When a slipping condition has been identified, the delivery mode of the compressor is ended by disengagement of the friction clutch, and a warning signal and/or warning information is outputted.

Abstract: A method is disclosed for monitoring the functions of a friction clutch which is arranged in a vehicle between a drive motor and a compressor of a compressed air supply system and which can be disengaged and engaged pneumatically. In a delivery mode of the compressor, at least one operating parameter is detected by sensor and evaluated in an electronic control unit. When a slipping condition of the friction clutch is identified, a value for a cut-off pressure of the compressor stored in the electronic control unit is reduced. When a slipping condition has been identified, the delivery mode of the compressor is ended by disengagement of the friction clutch, and a warning signal and/or warning information is outputted.

Abstract: A compressor for generating compressed air in a vehicle includes at least one piston, a cylinder, a crankshaft, a lubricant connection, a lubricant supply channel, and a clutch device by means of which the crankshaft can be connected to or disconnected from a drive device. The lubricant supply channel opens into at least one lubricant outlet in the interior of the compressor directed toward a piston running surface of the cylinder at least in particular rotational positions of the crankshaft.

Abstract: A compressor for generating compressed air in a vehicle includes a crankshaft and an interface area for fastening a clutch device by means of which the crankshaft of the compressor can be connected to or disconnected from a drive device. The interface area is configured to receive a crucible-shaped receptacle element. The crucible-shaped receptacle element can be a cylinder for receiving a piston that can be acted on by a pressure medium for actuating the clutch device.

Abstract: The invention relates to a compressor for generating compressed air in a vehicle, having a crankshaft and an interface area set up for fastening a clutch device, by means of which the crankshaft of the compressor can be connected to or disconnected from a drive device. According to the invention, the interface area is designed for receiving an annular, crucible-shaped receptacle element, and the crucible-shaped receptacle element is designed as a cylinder for receiving a piston that can be acted on by a pressure medium for actuating the clutch device.

Abstract: The invention relates to a compressor (1) for generating compressed air in a vehicle, having at least one piston (6, 7), a cylinder (8, 9), a crankshaft (12), a lubricant connection (14) and a lubricant supply channel (13, 15 16, 20, 21), and having a clutch device (3) by means of which the crankshaft (12) of the compressor (1) can be connected to or disconnected from a drive device, wherein the lubricant supply channel (13, 15 16, 20, 21) opens into at least one lubricant outlet (22, 23) provided in the interior of the compressor (1) and directed toward a piston running surface (19) of the cylinder at least in particular rotational positions of the crankshaft (12).

Abstract: A hydrophobic precipitated silica is prepared by a process comprising: a) preparing a mixture of an organopolysiloxane derivative and a precipitated silica; b) conditioning the mixture obtained at a temperature ranging from 10 to 150° C. for a period ranging from 0.5 to 72 h, and c) conducting oxidative heat treatment under fluid conditions at a temperature more than 300° C. with an oxidizing gas.

Abstract: A hydrophobic precipitated silica is prepared by a process comprising:

Abstract: An actuating device for machine elements that are subject to wear play, especially for brakes of railborne vehicles. The actuating device has a piston-cylinder unit operated by a pressure medium. The piston-cylinder unit has a piston rod engagable with an adjusting device configured as an adjusting nut/spindle assembly, for wear play compensation. The adjusting nut/spindle assembly has a sleeve-type adjusting nut with external toothing engagable with an automatically actuatable actuating drive. An electronic control unit generates an actuating signal for wear play compensation in dependence on the position of a brake piston connected to the piston rod. The brake piston position is measured by a sensor. The actuating signal is transmitted to the actuating drive.

Abstract: A device for operating a machine element subject to wear-related play, especially for brakes of rail vehicles, includes a pressure-medium-operated piston-cylinder arrangement having a cylinder and operating piston, the piston rod of which is actively connected to a readjustment device that compensates for wear-related play. To realize a simple and compact structure and create further prerequisites for active integration into an operating system, the readjustment device comprises a readjustment piston mounted in the piston-cylinder arrangement between the operating piston and the bottom of the cylinder and acts as a limit stop for the operating piston. For axial arresting the readjustment piston, a coaxial piston rod shoulder that faces the bottom of the cylinder and a holding element resting on the bottom of the cylinder form an arresting arrangement that permits movement of the readjustment piston toward the operating piston and blocks a counter movement of the readjustment piston.