A sand spreading system for a rail vehicle with driveable and/or brakeable rail wheels. The sand spreading system includes a sand box for storing spreading sand, a sand staircase which is fastened to the sand box for the compressed-air-controlled metering of the output of spreading sand, and a sand outlet tube which is connected to the sand staircase via a sand hose and opens in front of a rail wheel. By a heating device for generating a hot air flow passing through the spreading sand being integrated in the sand staircase, the spreading sand can be kept dry and pourable even in the wet and frost, and therefore the function of the sand staircase and hence the effective operation of the rail vehicle are assured.

A fluid control device includes a first conduit having a first end and a second end, and a first fluid that moves within the first conduit between the first end and the second end. The first conduit includes an interior surface defining a cavity of the first conduit. The fluid control device includes a second conduit having a third end and a fourth end, and a second fluid that moves within the second conduit between the third and fourth ends. At least a portion of the second conduit extends within the cavity of the first conduit. The first fluid is separate from the second fluid as the first fluid moves within the first conduit and the second fluid moves within the second conduit.

A diagnostic apparatus for a sand metering device for a sanding system for a rail vehicle includes a detection device and an evaluation device. The detection device is designed to detect at least one parameter of the sand metering device of the sanding system and to provide a detection signal representing the parameter. The evaluation device is designed to output a metering error signal using the detection signal, which metering error signal indicates a malfunction of the sand metering device if the parameter deviates from a target parameter.

A system and method herein relate to vehicle control by adjusting a torque distribution of the vehicle. The system includes a first motor configured to provide a torque to a first wheel, and a delivery system configured to controllably apply a traction control compound to a route on which the first wheel is configured to travel. The system also includes a controller circuit having one or more processors. The controller circuit is configured to control the delivery system to apply the traction control compound to the route based on a monitored temperature of the first motor.

Various methods and systems are provided for automatically applying tractive material during operation of a vehicle. In one embodiment, the application of tractive material for a vehicle is adjusted based on calculated and expected tractive effort for each powered truck, axle, or wheel of the vehicle. In this way, tractive material application is controlled on a per truck, axle, or wheel basis in order to reduce excessive use of tractive material during operation of the vehicle.

The invention pertains to a discharge nozzle for discharging grit or lubricant into the gap between a rail and a track wheel of a rail vehicle, with the discharge nozzle comprising a base body with at least one connection for being connected to a conveyor line for the grit or lubricant and an outlet that is connected to the connection via a channel. In order to achieve an efficient and purposeful discharge of the majority of grit and/or lubricant into the gap between the rail and the track wheel, the outer contour of the base body is in the longitudinal direction shaped in a convex manner at least in the rear region lying opposite of the outlet and, if applicable, surrounded by an attachment such that the air flowing around the base body is accelerated in the direction of the outlet.

A pneumatic sand conveying device for a sanding system of a rail vehicle includes an obstacle device which is fluidically coupled to a sand input for receiving sand from a sand storage container, the obstacle device being shaped to form an obstacle between the sand input and a mixing device fluidically coupled to the obstacle device. In addition, the sand conveying device has the mixing device for receiving and forwarding sand from the obstacle device by compressed air and a discharge device fluidically coupled to the mixing device to dispense the sand from the sand conveying device through a sand outlet. The obstacle device, the mixing device and the discharge device are arranged in a horizontal plane when the sand conveying device is in a state ready for operation.

A sand stairway for a sand-spreading system of a rail vehicle has a stairway housing with a sand compartment for providing sliding spreading sand. A blow-out duct discharges spreading sand from the stairway housing. First and second nozzle inserts are releasably inserted into first and second receiving holes of a nozzle flange of the stairway housing above the sand compartment. The nozzle inserts are produced separately from the stairway housing. The first nozzle insert produces an air jet directed into the sand compartment and swirls up spreading sand. The second nozzle insert produces an air jet directed into the blow-out duct and swirls up spreading sand. A sand-spreading system for a rail vehicle has a sand stairway for the compressed-air-controlled metering of the discharged spreading sand. The novel sand stairway has increased flexibility and can be set up without great effort for using different types of spreading sand.

A metering device is configured for fitting into a sand-spreading system of a rail vehicle. The metering device has a housing block, in which a sand path extends from a sand-feeding funnel into a vertical sand blow-out channel via a sand-mixing channel, which rises at an inclination from a sand-holding space to a sand deflection space. A pushing air tube is provided for producing an air flow that conveys spreading sand. The pushing air tube protrudes into the sand-mixing channel coaxially from the bottom. A nozzle insert is detachable inserted into an inflow channel, which leads into the sand deflection space from above. The nozzle insert is provided for producing an air jet directed downward into the sand blow-out channel. The amount of scattering sand that is discharged can be metered more precisely and the susceptibility of the metering device to wear is improved.

A method for controlling a device for metering granular material and a metering device for metering granular material comprises a feed for the granular material from a container into a metering chamber. A metering piston can be actuated by a control device such that a gap between the feed and the metering chamber is opened by a predefined first distance and a second distance which is greater than the first distance. At least one sensor is arranged in a delivery line leading away from the metering chamber and is connected to the control device so that the metering piston can be actuated for a predefined duration such that the gap between the feed for the granular material and the metering chamber can be opened by the second distance if a blockage of the granular material is detected by the at least one sensor, so that the blockage is dispersed.