Abstract: A brake system includes an electromechanical brake module (11.1, 11.2), a first energy storage unit (15), an operating supply circuit (100) for connecting the first energy storage unit (15) to the brake module (11.1, 11.2), a second energy storage unit (25, 25.1) connected to a redundancy supply circuit (200, 200.1), and a control module (16.1, 16.2) connected to the operating supply circuit (100) and the redundancy supply circuit (200, 200.1). The control module (16.1, 16.2) switches from a first switching state, in which the first energy storage unit (15) supplies energy via the operating supply circuit (100), to a second switching state, in which the energy supply is provided via the second energy storage unit (25, 25.1) and the redundancy supply circuit (200, 200.1) in the event of an operating-state fault.

Abstract: An electromechanical brake system (10) includes a first energy supply apparatus (20) and a second energy supply apparatus (21), a first system control device (30) and a second system control device (31), a plurality of electromechanical brake actuator devices (41), and a first plurality and a second plurality of electronic brake control systems (40a, 40b). Each of the electronic brake control systems is set up to control one of the electromechanical brake actuator devices. The first energy supply apparatus is connected to the first system control device and to each of the first electronic brake control systems, and the second energy supply apparatus is connected to the second system control device and to each of the second electronic brake control systems. A further control device (32, 47) may be connected to at least one of the first electronic brake control systems or one of the second electronic brake control systems.

Abstract: A brake actuator (1, 1?) includes a casing (10), an electric motor for providing a driving torque, a cam disc (20) rotatably mounted to the casing (10) and operatively coupled to the electric motor, and a push rod (30) received in the casing (10), and configured to reciprocate in a longitudinal direction (100) between a retracted position (300) and an extended position (400). The push rod (30) and the cam disc (20) are operatively coupled such that a rotational movement of the cam disc (20) causes a linear movement of the push rod. A guiding member (40), in particular a bushing, is mounted to the casing (10), wherein the guiding member (40) guides the movement of the push rod (30) in the longitudinal direction (100).

Abstract: An electromechanical brake actuator (102, 202, 302, 402) for a brake has a cam disc (108, 108?, 108?, 208, 308, 408) and a brake plunger (114, 214, 314) for actuating a brake lever (358). The cam disc (108, 108?, 108?, 208, 308, 408) and the brake plunger (114, 214, 314) have contact surfaces in contact with one another for directly transmitting a drive torque. The contact surface of the cam disc (108, 108?, 108?, 208, 308, 408) extends at a distance r about the pivot point D, which is defined as a function r(?) with a change rate r?(?) and depends on the angular position ? of the cam disc (108, 108?, 108?, 208, 308, 408). The contact surface is configured to effect non-linear transmission between the drive torque of the cam disc (108, 108?, 108?, 208, 308, 408) and the force transmitted to the brake plunger (114, 214, 314).

Abstract: A method for adjusting the clearance of an electromechanical brake, in particular of a utility vehicle brake, involves the following steps: activating a clearance test cycle for the brake, applying at least one brake lining of the brake in the direction of a brake disc and determining a contact position in which the brake lining enters into contact with the brake disc when application occurs, determining the clearance as well the degree of wear of the lining on the basis of the determined contact position, calculating the clearance which is necessary for the brake and a necessary contact position of the brake lining and brake disc in accordance with the degree of wear of the lining using predefined parameters. The method is performed by a suitable brake and a control device.

Abstract: An electromechanical brake actuator (100) is configured to move a service-brake rod (104) between a full-braking position (BP) and a drive position (DP). A parking-brake rod (112) is coupled to the service-brake rod and is movable between a first position (P1) for locking the service-brake rod (104) in the full-braking position (BP), and a second position (P2) where the service-brake rod (104) is free to be moved. A spring element (116) coupled to the parking-brake rod is arranged so that in a fully-compressed state (CS) the parking-brake rod is in the second position, and in a fully-released state (RS) the parking-brake rod is in the first position. A hydraulic unit (118) is operatively coupled to the parking-brake rod and configured, based on a parking-brake signal, to lock the parking-brake rod or allow a release of the spring element to the fully-released state.

Abstract: An electromechanical brake actuator (100) is configured to move a service-brake rod (104) between a full-braking position (BP) and a drive position (DP). A parking-brake rod (112) is coupled to the service-brake rod and is movable between a first position (P1) for locking the service-brake rod (104) in the full-braking position (BP), and a second position (P2) where the service-brake rod (104) is free to be moved. A spring element (116) coupled to the parking-brake rod is arranged so that in a fully-compressed state (CS) the parking-brake rod is in the second position, and in a fully-released state (RS) the parking-brake rod is in the first position. A hydraulic unit (118) is operatively coupled to the parking-brake rod and configured, based on a parking-brake signal, to lock the parking-brake rod or allow a release of the spring element to the fully-released state.

Abstract: A foot brake valve (2?) of a pneumatic brake system in a motor vehicle has an installation plate (4?), on which a brake pedal (14) is pivotably mounted and to which a housing (18?) of a control unit (16, 26) is fastened. A spring-loaded plunger piston (36) in actuating contact with the brake pedal (14) is guided axially movably in an annular collar (50) projecting upward out of the installation plate (4?). For fastening the housing (18?) of the control unit (16, 26) to the installation plate (4?), the housing (18?) has an intermediate flange (48) which is screw-connected to the main part of the housing (18?) and has the annular collar (50). The intermediate flange (48) is coaxially rotatably about a vertical central axis (32), and is connectable in non-positively locking fashion to the installation plate (4?) via a releasable clamping connection (62).

Abstract: A method for determining a clearance of an electromechanical brake involves the following steps: Activating a clearance determination cycle for the brake, moving an electromechanical brake actuator by a drive motor into a first end position, moving the electromechanical brake actuator via the drive motor toward a second end position, continuously determining a rotor position and/or a motor current of the drive motor during the movement of the brake actuator toward the second end position, determining a contact position at which the brake pad comes into contact with the brake disc, on the basis of the rotor position and/or of the motor current, and determining a clearance and/or a degree of pad wear on the basis of the determined contact position. A suitable electomechanical brake and a respective control unit carry out the method.

Abstract: A relay valve (10) for a pneumatic valve unit (14), for example for a braking system of a utility vehicle, has a first assembly component (18) and a second assembly component (20). A hollow cylindrical guide portion (28) of a piston (24) of the relay valve (10) is received, in an axially guided manner, in the first assembly component (18). The second assembly component (20) includes additional valve components and the venting region of the relay valve (10). At least the first assembly component (18) and the second assembly component (20), when assembled, form a preassembly unit (26) first assembly component (18) and are joined by a bayonet connection (30). The preassembly unit (26) is inserted into a housing (12) of the valve unit (14), The interior of the housing is delimited by a cup-shaped inner wall (32), and the preassembled unit is fastened therein.

Abstract: A control valve (12) for applying a spring-loaded brake pressure (p3b) to spring-loaded parts of a rear-axle wheel brake is provided. The control valve (12) is activatable pneumatically via a second control input (12b) with a parking-brake control pressure (p5). The parking-brake control pressure (p5) can act in such a manner on a control mechanism (14b, 15b, 17c, 22, 23, 24) arranged in a valve housing (12f) of the control valve (12) that a spring-loaded brake pressure (p3b) arises at a control output (12c) of the control valve (12) as a function of the parking-brake control pressure (p5) for bringing about a parking-brake braking specification with the spring-loaded parts of the rear-axle wheel brakes. The control valve (12) has a first control connection (12a) connectable to an adjustable first control chamber (14a), which is operatively connected to the control mechanism (14b, 15b, 17c, 22, 23, 24).

Abstract: An electromechanical brake actuator (2) includes a housing (1), a first housing part (3) configured as a housing flange for attaching the electromechanical brake actuator (2) to a disc brake (38), a second housing part (4) for receiving a drive (6), a third housing part (5) arranged between the first housing part (3) and the second housing part (4) and connected to the first housing part (3) and the second housing part (4), a motor (37), a gearbox (7), and a tappet (9) or a spindle for actuating a disc brake (38). The housing (1) is an aluminum die-cast formed part. The first housing part (3) and the second housing part (4) have planar contact surfaces (34, 34a) configured to receive plates of a two-plate die-casting machine during the forming process of the housing (1).

Abstract: A brake actuator (1, 1?) includes a casing (10), an electric motor for providing a driving torque, a cam disc (20) rotatably mounted to the casing (10) and operatively coupled to the electric motor, and a push rod (30) received in the casing (10), and configured to reciprocate in a longitudinal direction (100) between a retracted position (300) and an extended position (400). The push rod (30) and the cam disc (20) are operatively coupled such that a rotational movement of the cam disc (20) causes a linear movement of the push rod. A guiding member (40), in particular a bushing, is mounted to the casing (10), wherein the guiding member (40) guides the movement of the push rod (30) in the longitudinal direction (100).

Abstract: A relay valve (10) for a pneumatic valve unit (14), for example for a braking system of a utility vehicle, has a first assembly component (18) and a second assembly component (20). A hollow cylindrical guide portion (28) of a piston (24) of the relay valve (10) is received, in an axially guided manner, in the first assembly component (18). The second assembly component (20) includes additional valve components and the venting region of the relay valve (10). At least the first assembly component (18) and the second assembly component (20), when assembled, form a preassembly unit (26) first assembly component (18) and are joined by a bayonet connection (30). The preassembly unit (26) is inserted into a housing (12) of the valve unit (14), The interior of the housing is delimited by a cup-shaped inner wall (32), and the preassembled unit is fastened therein.

Abstract: An electromechanical brake actuator (102, 202, 302, 402) for a brake has a cam disc (108, 108?, 108?, 208, 308, 408) and a brake plunger (114, 214, 314) for actuating a brake lever (358). The cam disc (108, 108?, 108?, 208, 308, 408) and the brake plunger (114, 214, 314) have contact surfaces in contact with one another for directly transmitting a drive torque. The contact surface of the cam disc (108, 108?, 108?, 208, 308, 408) extends at a distance r about the pivot point D, which is defined as a function r(?) with a change rate r?(?) and depends on the angular position ? of the cam disc (108, 108?, 108?, 208, 308, 408). The contact surface is configured to effect non-linear transmission between the drive torque of the cam disc (108, 108?, 108?, 208, 308, 408) and the force transmitted to the brake plunger (114, 214, 314).

Abstract: The disclosure relates to an electromechanical disk brake having a parking brake actuator for motor vehicles. Parking brake actuators are used to prevent a vehicle from rolling away from the stationary state. In conventional disk brakes, a brake cylinder which is assigned to the disk brake is generally equipped with a mechanically actuated parking brake function. At the same time, the principle of the parking brake function used in a conventional disk brake cannot be used. It is an object of the disclosure to provide an electromechanical disk brake having a parking brake actuator, which is cost-effective and needs little construction space. The object can, for example, be achieved via an electromechanical disk brake having a parking brake actuator embodied as an electromagnetic linear drive.

Abstract: A method for determining a clearance of an electromechanical brake involves the following steps: Activating a clearance determination cycle for the brake, moving an electromechanical brake actuator by a drive motor into a first end position, moving the electromechanical brake actuator via the drive motor toward a second end position, continuously determining a rotor position and/or a motor current of the drive motor during the movement of the brake actuator toward the second end position, determining a contact positiat which the brake pad comes into contact with the brake disc, on the basis of the rotor position and/or of the motor current, and determining a clearance and/or a degree of pad wear on the basis of the determined contact position. A suitable electomechanical brake and a respective control unit carry out the method.

Abstract: A method for adjusting the clearance of an electromechanical brake, in particular of a utility vehicle brake, involves the following steps: activating a clearance test cycle for the brake, applying at least one brake lining of the brake in the direction of a brake disc and determining a contact position in which the brake lining enters into contact with the brake disc when application occurs, determining the clearance as well the degree of wear of the lining on the basis of the determined contact position, calculating the clearance which is necessary for the brake and a necessary contact position of the brake lining and brake disc in accordance with the degree of wear of the lining using predefined parameters. The method is performed by a suitable brake and a control device.

Abstract: A foot brake valve (2?) of a pneumatic brake system in a motor vehicle has an installation plate (4?), on which a brake pedal (14) is pivotably mounted and to which a housing (18?) of a control unit (16, 26) is fastened. A spring-loaded plunger piston (36) in actuating contact with the brake pedal (14) is guided axially movably in an annular collar (50) projecting upward out of the installation plate (4?). For fastening the housing (18?) of the control unit (16, 26) to the installation plate (4?), the housing (18?) has an intermediate flange (48) which is screw-connected to the main part of the housing (18?) and has the annular collar (50). The intermediate flange (48) is coaxially rotatably about a vertical central axis (32), and is connectable in non-positively locking fashion to the installation plate (4?) via a releasable clamping connection (62).

Abstract: A control valve (12) for applying a spring-loaded brake pressure (p3b) to spring-loaded parts of a rear-axle wheel brake is provided. The control valve (12) is activatable pneumatically via a second control input (12b) with a parking-brake control pressure (p5). The parking-brake control pressure (p5) can act in such a manner on a control mechanism (14b, 15b, 17c, 22, 23, 24) arranged in a valve housing (12f) of the control valve (12) that a spring-loaded brake pressure (p3b) arises at a control output (12c) of the control valve (12) as a function of the parking-brake control pressure (p5) for bringing about a parking-brake braking specification with the spring-loaded parts of the rear-axle wheel brakes. The control valve (12) has a first control connection (12a) connectable to an adjustable first control chamber (14a), which is operatively connected to the control mechanism (14b, 15b, 17c, 22, 23, 24).