Abstract: A vehicle crane having a hydropneumatic suspension and a braking system including wheel brakes and a first braking circuit assigned to the wheel brakes of at least one vehicle axle and a second braking circuit assigned to the wheel brakes of at least one other vehicle axle. In order to adapt the actuation of the braking system to the weight state, the hydropneumatic suspension is coupled to an automatically load-dependent braking force regulator that is operatively connected to one of the braking circuits or to one of their braking circuit sections such that, on the basis of a weight state signal of the vehicle crane generated from the hydropneumatic suspension, a braking pressure generated inside the braking circuit or braking circuit section coupled to the automatically load-dependent braking force regulator, can be varied with respect to a braking pressure generated simultaneously inside the other braking circuit or braking circuit section.

Abstract: A rail vehicle brake system includes an electric controlled pneumatic brake valve having a controller and includes an empty-load device connecting the brake valve to a brake device. An electro-pneumatic lock-out valve is controlled by the controller and has a first position which allows the proportioning of the inlet pressure to the outlet by the empty-load device and a lock-out position which pneumatically prevents the proportioning of the inlet pressure to the outlet by the empty-load device. Also, the system may include a sensor for sensing the vehicle load; and the controller controls the brake valve in response to the sensed load taking into account the operation of the change over valve of the empty-load device. Also, an empty-load device including a load sensor is disclosed.

Abstract: A brake system is provided for minimizing brake pulsation feedback caused by surface variations of a brake system corner component. The brake system includes at least one sensing device configured to measure a pressure pulse caused by the surface variation of a brake system corner component. A controller module is in communication with the at least one sensing device and a hydraulic brake circuit. The controller module is configured to receive an output from the at least one sensing device and to adjust line pressure in the hydraulic brake circuit to substantially minimize brake pulsation feedback.

Abstract: A railway car brake system comprising a control device engageable with a predetermined portion of such railway car for compensating braking force in response to a load carried by such railway car. The control device includes a sensor mechanism engageable with a truck bolster or a movable car structure for sensing a vertical position thereof corresponding to a load carried by the railway car. There is a control valve engageable with the sensor mechanism which generates a fluid pressure signal responsive to such load. A pneumatic actuator engageable with a predetermined brake beam disposed on such truck assembly and connected to such control valve. This pneumatic actuator generates a predetermined braking force responsive to the fluid pressure signal and further responsive to the load carried by the railway car as sensed by the sensor mechanism. Such predetermined braking force may be proportionally adjusted to variations in the load carried by the railway car.

Abstract: A digital multi-point electronic load weigh system is used with a railcar truck control unit to provide a digital all electrical/electronic system, which will perform the brake load weigh function for an electro-pneumatic brake system. The digital multi-point electronic load weigh system is primarily to be used with a distributed electronic control system using neuron style communication/control microprocessors. However, the digital multi-point electronic load weigh system can also be integrated with existing electro-pneumatic brake control components.

Abstract: A digital multi-point electronic load weigh system is used with a railcar truck control unit to provide a digital all electrical/electronic system, which will perform the brake load weigh function for an electro-pneumatic brake system. The digital multi-point electronic load weigh system is primarily to be used with a distributed electronic control system using neuron style communication/control microprocessors. However, the digital multi-point electronic load weigh system can also be integrated with existing electro-pneumatic brake control components.

Abstract: The present invention relates to a brake assembly for a vehicle having an air spring wherein a brake signal operates a brake cylinder of the vehicle. A proportioning valve, having its load responsive element disabled and being responsive to the brake signal, provides a proportioned brake signal to the brake cylinder. A switch, responsive to an air spring pressure signal selectively connects the brake signal to the brake cylinder. The present invention further relates to a method for retrofitting a brake system by disabling the load sensing element of a proportioning valve and inserting a switch in parallel with the proportioning valve.

Abstract: 1. Spring suspension system, in particular for a machine.

Abstract: A trailer brake valve (1) is to be mounted in a compressed air brake system of a trailer of a truck. The brake system of the trailer includes an anti lock control unit and a load sensing control unit. The trailer brake valve (1) includes a housing (2), a relay piston (3) being movably guided in the housing (2) and a control chamber (4). A brake chamber (5) includes connections (31) for conduits leading to brake cylinders (33) of the brake system. The control chamber (4) and the brake chamber (5) are defined by the relay piston (3). A brake conduit (7) is connected to the control chamber (4). A reservoir chamber (47) and an outlet valve (43, 54) are located in the housing (2) and an inlet valve (43, 51) is located adjacent the reservoir chamber (47). A first solenoid valve (8) is arranged in the brake conduit (7) and a second solenoid valve (18) is designed and arranged to deaerate the control chamber (4).

Abstract: A braking force control valve for an air brake system. The air brake system includes an air compressor for generating compressed air, an air tank for storing the compressed air supplied from the air compressor, an air bellows connected to the air tank, a load sensing valve connected to the air bellows to equilibrate braking force applied to front and rear wheels of the vehicle, a brake valve for operating the load sensing valve, a brake chamber for supplying braking force by receiving the compressed air from the air tank when the brake valve is operated. The braking force control valve comprises a valve body provided with a first port connected to the air tank, a second port connected to the air bellows, a third port connected to the load sensing valve, and a valve mechanism for selectively connecting the third port to either the first port or the second port according to a height variation between a body and an axle shaft of the vehicle.