Abstract: A device is for determining the body height of a vehicle by contactless measurement of the distance between body or frame of the vehicle and a vehicle part connected to the chassis. The device includes a transmitter and a receiver, which emit a high-frequency signal directed toward the vehicle part and receive and process the reflected signal. The reflected signal is evaluated via an algorithm stored in a control unit assigned to the device and the distance, which can be calculated from the signal, of the vehicle part to the transmitter and receiver is determined. The transmitter is assigned to a damper or stop buffer arranged on the body or frame and emits a high-frequency signal onto a stop surface, which is provided for the damper or stop buffer and is arranged on the chassis, and the receiver receives the signal reflected from the stop surface.

Abstract: A method is for activating a vehicle function, wherein a controller for activating the vehicle function checks an access authorization of the mobile device and activates the vehicle function only if the authorization is acceptable. The method includes: a) the controller sending a request to the mobile device demanding transmission of the authorization for a vehicle function, b) the mobile device receiving the request from the controller and sending the authorization to the controller, c) the controller checking the authorization and activates the vehicle function if the authorization is acceptable, d) the mobile device sending the authorization only if the device was previously actuated for the purpose of authorization and thus was authorized to send the authorization, e) and the controller activating the vehicle function only if a signal of a sensor device actuatable by the user has previously been received by the controller.

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 method for operating a pneumatic system of a vehicle is disclosed. The pneumatic system comprises an electronically and/or pneumatically controlled compressor which supplies compressed air during a normal mode and which is switched off or idles when not supplying compressed air. In the method, an ambient temperature (T_Umg) around the pneumatic system is continuously sensed and compared with a predefined target temperature (T_Ziel), a freezing risk is detected when the ambient temperature (T_Umg) reaches or drops below the target temperature (T_Ziel), and when a freezing risk has been detected, a cold mode is activated in which the compressor delivers compressed air also outside delivery phases of the normal mode, and additional compressed air is supplied to pneumatic system components that risk freezing. An additional ON time (ED_zus) of the compressor in the cold mode is variably controlled.

Abstract: In a method and a device for compressed air preparation in motor vehicles, ambient air is drawn in and compressed by a compressor (2), dried in a downstream air dryer (4, 4?) and delivered to compressed air consumers (storage tanks 14, 16). The air dryer (4, 4?) is regenerated with system air stored in a regeneration reservoir (30, 30?), passed via the air dryer (4, 4?) and vented via an associated vent valve (22). In predetermined operating states, a switch is made between a delivery phase and a regeneration phase via an electrically controlled governor (36, 36?). The delivery phase of the compressor takes place at least when compressed air consumption is high, and the regeneration phase takes place in the stationary mode at the idling speed of the drive motor, to keep the delivery phases short and to have sufficient time available for regeneration.

Abstract: A method for operating a pneumatic system of a vehicle is disclosed. The pneumatic system comprises an electronically and/or pneumatically controlled compressor which supplies compressed air during a normal mode and which is switched off or idles when not supplying compressed air. In the method, an ambient temperature (T_Umg) around the pneumatic system is continuously sensed and compared with a predefined target temperature (T_Ziel), a freezing risk is detected when the ambient temperature (T_Umg) reaches or drops below the target temperature (T_Ziel), and when a freezing risk has been detected, a cold mode is activated in which the compressor delivers compressed air also outside delivery phases of the normal mode, and additional compressed air is supplied to pneumatic system components that risk freezing. An additional ON time (ED_zus) of the compressor in the cold mode is variably controlled.

Abstract: For a vehicle, a compressed air control device controls operating states of a compressor and an air drying device, and includes a compressor control outlet pneumatically connectable to a control inlet of the compressor, a system pressure inlet pneumatically connectable to a system pressure line that conducts a system pressure produced by the compressor, a ventilation control outlet pneumatically connectable to a control inlet of the air drying device and configured to pneumatically switch an operating state of the air drying device, a pneumatically operable ventilation control valve controllable by the system pressure to pneumatically couple the system pressure inlet to the ventilation control outlet to switch the operating state of the air drying device, and an electrically operable supply control valve configured to pneumatically couple the system pressure inlet to the compressor control outlet independently of the system pressure to switch the operating state of the compressor.

Abstract: In a method and a device for compressed air preparation in motor vehicles, ambient air is drawn in and compressed by a compressor (2), dried in a downstream air dryer (4, 4?) and delivered to compressed air consumers (storage tanks 14, 16). The air dryer (4, 4?) is regenerated with system air stored in a regeneration reservoir (30, 30?), passed via the air dryer (4, 4?) and vented via an associated vent valve (22). In predetermined operating states, a switch is made between a delivery phase and a regeneration phase via an electrically controlled governor (36, 36?). The delivery phase of the compressor takes place at least when compressed air consumption is high, and the regeneration phase takes place in the stationary mode at the idling speed of the drive motor, to keep the delivery phases short and to have sufficient time available for regeneration.

Abstract: A compressor cylinder head with a cylinder head housing (6) and at least one pressure valve (18) has an associated pressure valve channel (17) in the cylinder head housing (6). The pressure valve channel (17) connects a compression chamber (8) arranged below the compressor cylinder head to a pressure chamber (16) inside the compressor cylinder head. Further, the compressor cylinder head has one or more channel portions with a first coolant channel system (24) inside the cylinder head housing (6), which can be filled with a coolant that flows around the pressure chamber (16). Via a casting method, the cylinder head housing (6) is produced integrally with the first coolant channel system (24) arranged therein, and further coolant channels (34) are arranged on either side of the at least one pressure valve channel (17).

Abstract: A device for acquiring and processing sensor measured values and/or for controlling actuators has a base housing, sensors and/or actuators attached to the base housing, a cover that can be connected to the base housing to cover the sensors and/or actuators, and a circuit board with control electronics. To mount the circuit board easily and effect secure contact of the sensors therewith, the circuit board is securely connected to the inner side of the cover using press-fit connectors, the circuit board has electrically active first contact faces on its side remote from the cover, the sensors and/or actuators have electrically active second contact faces on their sides facing the cover, and the second contact faces of the sensors and/or actuators are connected to the first contact faces via electrically conductive contact springs.

Abstract: A control device for an air supply system of a vehicle, which has a transmission device and an internal combustion engine for driving the vehicle in load phases, is configured to receive measured pressure signals and to output control signals to initiate and terminate delivery phases of a compressor that is or can be connected to the internal combustion engine. The control device picks up state signals relating to a current state of the internal combustion engine and/or the transmission device and initiates a delivery phase as a function of the state signals in load phases of the internal combustion engine.

Abstract: A device for acquiring and processing sensor measured values and/or for controlling actuators has a base housing, sensors and/or actuators attached to the base housing, a cover that can be connected to the base housing to cover the sensors and/or actuators, and a circuit board with control electronics. To mount the circuit board easily and effect secure contact of the sensors therewith, the circuit board is securely connected to the inner side of the cover using press-fit connectors, the circuit board has electrically active first contact faces on its side remote from the cover, the sensors and/or actuators have electrically active second contact faces on their sides facing the cover, and the second contact faces of the sensors and/or actuators are connected to the first contact faces via electrically conductive contact springs.

Abstract: A method for operating a compressed air brake system in a motor vehicle equipped with a brake control device includes regulating the generation of compressed air and/or the supply of compressed air into a storage container and, in particular, the regeneration of an air conditioning system, using a compressor controller, and carrying out calculations for the compressor control in the brake control device.

Abstract: A method and brake control device, with closed-loop braking intervention control functionality, for operating a vehicle compressed-air brake system includes directly processing data representing at least one pressure measurement of the compressed air, such as the pressure in the brake circuit(s) and/or the system pressure. Brake system leaks can be detected even when the vehicle is operating.

Abstract: For a vehicle equipped with a self-braking system (for example, ASR, ESP, FDR, EBS), a service brake, a parking brake, and at least one associated pressure sensor for detecting at least one pressure in the vehicle brake circuit, the brake circuit comprising a compressed-air circuit, a process to prevent the vehicle from rolling away includes determining whether a pressure in the compressed-air circuit from which the parking brake is fed is below a release threshold, and operating the service brake if the pressure in the compressed-air circuit is below the release threshold.

Abstract: The invention relates to a vehicle (1), which has: an internal combustion engine (6), an output shaft (3), a transmission unit (13; 8, 12) provided between the internal combustion engine (6) and the output shaft (3) for setting different gear ratios and/or decoupling the internal combustion engine (6) from the output shaft (3), and a compressed-air system (5) having a compressor (16) arranged on an engine shaft (7) of the internal combustion engine (6) and a compressed-air control unit (18). According to the invention, the compressed-air control unit (18) outputs a requirement signal (S4) for a transmission setting.

Abstract: A compressor system for a compressed-air supply arrangement includes an adjustable throttle device arranged in the suction line of the compressor. The throttle device is adjustable between a fully open load position and an idle position with a predefined narrowed throttle cross section. The idle power of the compressor is reduced as a result of the reduction of the pressure level downstream of the throttle device without additional lines, filters or the like.

Abstract: The invention relates to a compressed air control device (2) and to a compressed air control method for controlling respective operating states of a compressor (6) and of an air drying device (8) in a vehicle. The compressed air control device (2) has a compressor control outlet (36), by means of which the compressed air control device can be pneumatically connected to a control inlet of the compressor (6) in order to pneumatically switch the operating state of the compressor (6). The compressed air control device (2) further comprises a system pressure inlet (28), by means of which the compressed air control device can be pneumatically connected to a system pressure line (21), which conducts a system pressure produced by the compressor (6).

Abstract: The invention relates a compressed air recovery device, a compressed air supply system and a recovery module as well as to a method for operating a compressed air recovery device, to a control module and to a vehicle. A compressed air recovery device (30) comprises a compressed air inlet (1) to which a compressor (2) can be connected. The compressed air inlet (1) is connected to a pressure line (3) to which a system pressure line (5) is connected via a non-return valve (4). A drying unit (11) is arranged in the pressure line (3). A regeneration path (22) which can be connected to the system pressure line (5) depending on the switch position of a vent control valve (23) runs into the pressure line (3) between the drying unit (11) and the non-return valve (4). The supply of compressed air to the compressed air inlet (1) can be controlled by an electrically actuated supply control valve (17).