A system diagnoses and monitors air supply systems and includes a compressor with a drive, which is configured to provide pressurized air for the system, an air dryer, which is configured to remove moisture from the compressed air in the system, at least two sensors, wherein one sensor is configured and arranged to detect a status signal of a component to be monitored, and another sensor is configured and arranged to detect a reference signal relating to the component to be monitored, and an evaluation unit which is configured to evaluate the signals of the sensors. The evaluation unit is also configured to convert the sensor signals into maintenance and control signals based on an evaluation logic, which signals control the operating mode and the maintenance intervals of the air supply system.

A hydraulic arrangement is disclosed for distributing a fluid in pressure coming from a source of fluid in pressure among hydraulic units of a work vehicle. The hydraulic arrangement includes a priority valve configured to divide the flow of the fluid source between a subset of the hydraulic units on the base of an equivalent load sensing signal derived from the hydraulic units. The hydraulic arrangement further includes by-pass means fluidly interposed between the source and the subset of the hydraulic units and configured to allow direct passage of fluid by-passing priority valve from the source to the subset of the hydraulic units according to a predefined condition.

A towable crash-attenuating vehicle is shown having a frame; at least two axles coupled to the frame, each of the axles having wheels attached thereto; a ballast coupled to the frame; deflection shields coupled to the right and left sides of the frame, wherein the deflection shields cover the frame and a majority of the wheels on each side of the vehicle; a tow connection coupled to the front of the frame; an impact attenuator coupled to the rear of the frame; wherein the vehicle is provided with a brake system, and wherein the vehicle is provided with an mechanism for locking and unlocking the brake system.

A towable crash-attenuating vehicle is shown having a frame; at least two axles coupled to the frame, each of the axles having wheels attached thereto; a ballast coupled to the frame; deflection shields coupled to the right and left sides of the frame, wherein the deflection shields cover the frame and a majority of the wheels on each side of the vehicle; a tow connection coupled to the front of the frame; an impact attenuator coupled to the rear of the frame; wherein the vehicle is provided with a brake system, and wherein the vehicle is provided with an mechanism for locking and unlocking the brake system.

Method for venting a pneumatic system of a vehicle, pneumatic system and vehicle Method for venting a pneumatic system (1) of a vehicle, the pneumatic system (1) comprising an air compressor (4), a pneumatic circuit (2), an air pressure management system (6) in communication with the air compressor (4) and the pneumatic circuit (2), and a control unit, the method comprising: while pressure in the pneumatic circuit (1) is less than a cut-out pressure, supplying the pneumatic circuit (2) with compressed air from the air compressor (4) operated at an operating speed through the air pressure management system (6), once pressure in the pneumatic circuit (2) reaches the cut-out pressure, lowering pressure in the pneumatic circuit (2) to a target pressure, the air compressor (4) being operated at at least one deflating speed lower than the operating speed, the deflating speed being non null, after pressure in the pneumatic circuit (2) has reached the cut-out pressure, releasing compressed air in the air pressure management system (6) to the outside environment.

Method for venting a pneumatic system of a vehicle, pneumatic system and vehicle Method for venting a pneumatic system (1) of a vehicle, the pneumatic system (1) comprising an air compressor (4), a pneumatic circuit (2), an air pressure management system (6) in communication with the air compressor (4) and the pneumatic circuit (2), and a control unit, the method comprising: while pressure in the pneumatic circuit (1) is less than a cut-out pressure, supplying the pneumatic circuit (2) with compressed air from the air compressor (4) operated at an operating speed through the air pressure management system (6), once pressure in the pneumatic circuit (2) reaches the cut-out pressure, lowering pressure in the pneumatic circuit (2) to a target pressure, the air compressor (4) being operated at at least one deflating speed lower than the operating speed, the deflating speed being non null, after pressure in the pneumatic circuit (2) has reached the cut-out pressure, releasing compressed air in the air pressure management system (6) to the outside environment.

A hydraulic unit of a vehicle brake system includes at least one pump element that is driven via an eccentric, which is enclosed by an eccentric chamber. The hydraulic unit also includes a vacuum pump that is configured to maintain a vacuum in the eccentric chamber while the hydraulic unit is in operation.

A hydraulic unit of a vehicle brake system includes at least one pump element that is driven via an eccentric, which is enclosed by an eccentric chamber. The hydraulic unit also includes a vacuum pump that is configured to maintain a vacuum in the eccentric chamber while the hydraulic unit is in operation.

The invention relates to an electrohydraulic brake release device (1) comprising an actuating cylinder arrangement (400), a tank module (300) for receiving a hydraulic medium, an electric drive unit (200) and a functional unit (100) having a pump assembly (113). The pump assembly (113) is arranged in a recess (111) provided in the functional unit (100), which recess is in communication with the tank module (300), is functionally connected to the actuating cylinder arrangement (400) by way of a conduit arrangement (150, 160, 170, 171, 172, 180, 190) and by way of a bearing carrier cover (115) is sealed off from a dry-running drive motor (210, 211) of the electric drive unit (200). The invention further relates to a brake system comprising a brake release device of this kind.

The invention relates to an electrohydraulic brake release device (1) comprising an actuating cylinder arrangement (400), a tank module (300) for receiving a hydraulic medium, an electric drive unit (200) and a functional unit (100) having a pump assembly (113). The pump assembly (113) is arranged in a recess (111) provided in the functional unit (100), which recess is in communication with the tank module (300), is functionally connected to the actuating cylinder arrangement (400) by way of a conduit arrangement (150, 160, 170, 171, 172, 180, 190) and by way of a bearing carrier cover (115) is sealed off from a dry-running drive motor (210, 211) of the electric drive unit (200). The invention further relates to a brake system comprising a brake release device of this kind.