Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B61—RAILWAYS
  • B61C—LOCOMOTIVES; MOTOR RAILCARS
  • B61C15/00—Maintaining or augmenting the starting or braking power by auxiliary devices and measures; Preventing wheel slippage; Controlling distribution of tractive effort between driving wheels
  • B61C15/08—Preventing wheel slippage
  • B61C15/10—Preventing wheel slippage by depositing sand or like friction increasing materials

Definitions

• the present invention relates to an application device for coefficient of friction modifiers for a rail vehicle, a control device for an application device for friction coefficient modifiers for a rail vehicle, and a method for controlling a delivery device for friction coefficient modifiers for a rail vehicle.
• the effect of a brake or a drive device depends crucially on the frictional connection between wheels and rail, because a driving force or braking force is transmitted via the wheels to the rail.
• a parameter called the adhesion coefficient or adhesion coefficient determines the amount of braking force or driving force that can be transmitted to the rail.
• stationary and vehicle-mounted systems for outputting the coefficient of friction modifier.
• stationary systems friction pastes that are applied to the rail are usually used.
• Vehicle-mounted systems are usually scattering devices which scatter a granular medium (for example, sand of quartz or feldspar) onto the rail or directly into the wheel-rail gap.
• the activation of the scattering system is carried out either by the driver manually or automatically by the braking and traction system when speak of sliding or skid protection.
• the mass flow (time flow rate) of the grit to be promoted during activation is defined in advance based on driving tests or on the basis of standards and regulations.
• the mass flow is set in a one-step manner (only one mass flow is set), multi-level depending on the speed (different mass flows are set in different speed ranges) or continuous (the dependency between vehicle speed and mass flow is represented by a continuous function). Equivalent, a path-dependent flow rate can be defined.
• EP 1 181 179 B1 a method is described in which an anti-skid system lowers the brake cylinder pressure of an axle without scattering system with poor adhesion values so far that no locking of the wheels occurs.
• the thereby adjusting brake cylinder pressure and the brake cylinder target pressure are set in proportion and used as a measure of the mass flow.
• WO 2005 077 679 A1 describes a device which permits optical monitoring of the flow of grit.
• the static friction between the wheel and the rail must be improved.
• Bad stiction is caused on the one hand by the material wheel and rail condition, such as (rolling contact) material fatigue, rust, and on the other hand by environmental influences, such as natural environmental factors (snow, ice, moisture, rain, dust, leaves, etc.) and pollution (Oil, grease, fine dust, etc.) and their combinations, which are deposited on wheel and rail.
• a rail vehicle coefficient of friction applicator a rail vehicle friction coefficient modifier applicator, and a method of controlling a rail friction coefficient coefficient applicator according to the independent claims.
• Advantageous embodiments result from the subclaims and the following description.
• Different coefficient of friction modifiers offer different advantages in different situations. If a delivery device for coefficient of friction modifiers for a rail vehicle has at least two reservoirs for coefficient of friction modifiers, the optimum coefficient of friction modifier or a mixture of different friction coefficient modifiers can be selected in different situations.
• the advantages of fluid friction modifiers can also be used.
• An application device for coefficient of friction modifiers for a rail vehicle has the following features: a first reservoir for a first coefficient of friction modifier and at least one second reservoir for a second coefficient of friction modifier different from the first coefficient of friction modifier; and a first metering device for the first storage container and a second metering device for the second storage container, wherein in response to a control signal, the first Reibwertmodifikator and / or the second Reibwertmodifikator and / or a mixture of the first and the second Reibwertmodifikators ausbringbar.
• a rail vehicle may have a delivery device for Reibwertmodifikatoren.
• a rail vehicle may be understood to mean a motorized rail vehicle, such as a locomotive or a railcar, or a non-motorized rail vehicle, such as a wagon.
• a friction modifier can be understood as meaning a means for improving the adhesion or the frictional connection between the wheels and the rail.
• the dispenser may be provided for solid, granular, pasty or liquid Reibwertmodifikatoren and solid abrasives for a rail vehicle for application between rail and wheel.
• a friction coefficient may be understood as meaning scattering material, particles of a litter or a fluid, in particular a liquid.
• a Reibwertmodifikator may be adapted to improve a frictional connection between rail and wheel, such as by a friction between the wheel and rail is increased.
• the dispensing device has at least two storage containers for receiving and providing coefficient of friction modifiers such as a liquid or grit or particles.
• friction modifiers can be used in different containers. chen material, different sizes, different viscosity and / or different nature be provided.
• the first reservoir is designed for a first coefficient of friction modifier in the form of a friction value modifying fluid
• the at least second reservoir is designed for a second coefficient of friction modifier different from the first coefficient of friction modifier.
• the dispensing device has at least one metering device, which is designed to provide, in response to a control signal, a coefficient of friction modifier from one of the reservoirs or a mixture of coefficients of friction modifiers from at least two different reservoirs, or alternatively to apply it to a rail.
• each storage container can be assigned a metering device.
• the metering device may comprise a conveyor.
• the metering device can be configured to mix coefficient of friction modifiers from at least two storage containers, in particular the first storage container and the second storage container, in order to apply a corresponding coefficient of friction modifier mixture to the rail.
• the amount to be applied or the mass flow of the at least one coefficient of friction to be applied can be determined before leaving the metering device or before it hits the rail, or alternatively can be detected.
• a conveyor as part of the metering device can, for example, act electrically, pneumatically and / or mechanically.
• the metering device can be designed to select a coefficient of friction modifier in response to a control signal.
• the control signal may include information about a reservoir, a coefficient of friction modifier, an amount, a mass flow or a speed of the Reibwertmodifikators to be applied.
• a Reibwertmodifikator can be electrically leiform, so that between the wheel and rail a good electrically conductive contact is present.
• the first coefficient of friction modifier may be quartz sand and the second coefficient of friction modifier may be aluminum particles.
• Sand can reduce the electrical conductivity between the wheel and rail to insulation. Due to the isolation of wheel and rail track circuits of the rail section can be disturbed and rail sections wrongly as be reported freely. To avoid insulation, electrically conductive grit can be used.
• the dosage of the grit can be done pneumatically by positive and / or negative pressure or mechanically by a reciprocating piston, a worm or a cell wheel.
• the manipulated variables for metering are pressure, stroke or pulse width of the piston, speed of the screw or the cell wheel.
• the metering of a fluid Reibwertmodifikators can be done with a pump.
• Reibwertmodifikatoren be metered by means of a mechanism, by air or by means of a pump and promoted simultaneously or alternatively.
• the relationship between manipulated variable and mass flow can be determined in advance in the experiment and represented by a characteristic curve and stored in the control of the scattering system.
• the further transport of the metered grit can be done pneumatically through the conveyor pipe. Alternatively, a downpipe can be used.
• the first coefficient of friction modifier may be a friction modifying fluid.
• the second coefficient of friction modifier may be a friction modifying fluid, a granular friction modifier, a pasty friction modifier, or a solid abrasive.
• Different coefficients of friction modifiers can have different properties for improving the friction between the wheel and the rail in different basic conditions.
• Different framework conditions can be caused, for example, by climatic influences such as temperature, rain or moisture and the resulting effects such as ice or snow.
• the at least one further coefficient of friction modifier may be a friction value modifying liquid, a granular coefficient of friction modifier, a pasty coefficient of friction modifier or a solid abrasive.
• the dispensing device may comprise at least one lubricating-pin applicator, which is designed to rotate in response to the control signal a flange of the rail. lubricate the vehicle. Even with a lubricating pin applicator, the coefficient of friction between wheel and rail can be influenced. Thus, another way to improve the adhesion between the wheel and rail can be created.
• the dispensing device can also be at least one Reib.applikator and / or
• Lubricating applicator which is adapted to rub in response to the control signal on the running surface of a wheel of the rail vehicle.
• the dispensing device can have a device for monitoring a filling level in the first storage container and additionally or alternatively in the second storage container. If the dispensing device comprises further storage containers, a further device or further devices can monitor the fill level of the further storage containers.
• the device for monitoring the level can be designed as a limit value switch to a certain level, also referred to as a binary level sensor.
• the device for monitoring the level can be designed as a level sensor for continuous monitoring of the level, also referred to as an analog level sensor.
• a control device for a friction coefficient modifier for a rail vehicle has the following features: a device for reading in a control signal, wherein the control signal represents environmental data and / or a static coefficient of friction between a rail and a wheel of the rail vehicle; means for determining a first flow rate for the first coefficient of friction modifier and a second flow rate for the second coefficient of friction modifier using the control signal; and means for providing a control signal, the control signal including information about the first flow rate and the second flow rate.
• the dispensing device has a first reservoir for a first Reibwert value modifier and at least a second reservoir for a second different from the first Reibwertmodifikator Reibwertmodifikator and a first metering device for the first reservoir and a second metering device for the second reservoir.
• the first coefficient of friction modifier and / or the second coefficient of friction modifier and / or a mixture of the first and the second coefficient of friction modifier can be output.
• a control device may be an electrical device which receives signals, processes and, depending on these, provides at least one control signal.
• the control device may have one or more interfaces, which may be formed in hardware and / or software.
• the interfaces can be part of an integrated circuit, for example, in which functions of the control device are implemented.
• the interfaces may be software modules that are present, for example, on a microcontroller in addition to other software modules.
• the control device may have one or more separate components, such as control devices, which are interconnected for data transmission.
• the control device can be connected or connectable to a brake control device for data transmission, for example with a brake computer, an antiskid computer additionally or alternatively a traction computer.
• the control device can also be designed as part of a brake control device or traction control device.
• a controller may be configured to receive data representing a particular size and / or condition. It is conceivable that such data directly indicate a particular state or size.
• the device for reading in a control signal can be designed as an interface via which a control signal present at the interface can be read.
• environmental data which can be represented by the control signal
• natural environmental factors such as snow, ice, moisture, rain, dust or leaves and, additionally or alternatively, environmental pollution such as oil, grease or particulate matter, and their combinations, by wheel and rail deposit, be understood.
• the environmental data can also be understood as topographical data on the railway. Topographical data can be combined over the railway with information about the rail condition.
• the control signal determined by the control device can be embodied as an interface Means are provided for providing a control signal. In this case, the control signal on an information about the first flow rate and the second flow rate. If the output device for Reibwertmodifikatoren further reservoir, so the control signal may include information about the further flow rate for the other reservoir or the other reservoir.
• the control device can have a device for reading in a current coefficient of adhesion between the wheel and the rail.
• the device for determining can be designed to determine the first delivery quantity and the second delivery quantity using the instantaneous adhesive friction coefficient and / or a nominal value for the adhesive friction value. With a knowledge of the current coefficient of friction, a regulation can be made to the coefficient of adhesion.
• the control device may comprise a device for reading in information about the driving state of the vehicle, in particular a vehicle speed.
• the device for determining can be designed to determine the first delivery quantity and, additionally or alternatively, the second delivery quantity using the information about the driving state.
• the control device may have a device for reading in information about the electrical conductivity between a wheel and the rail.
• the device for determining may be designed to determine the first delivery quantity of a friction coefficient modifier and / or the second delivery quantity of an electrically conductive scattering agent using the information about the electrical conductivity between a wheel and the rail.
• the control device may have a device for reading in information about a fill level of the first storage container and / or at least the second storage container. In this case, the device for determining can be designed to determine the first delivery rate and simultaneously or alternatively at least the second delivery rate using the information about the fill level.
• a method for controlling a friction coefficient applicator dispenser for a rail vehicle comprises the steps of: a step of reading in a control signal, wherein the control signal represents environmental data and / or a coefficient of static friction between a rail and a wheel of the rail vehicle; a step of determining a control signal for the dispenser using the control signal, the control signal including information about a first flow rate for the first coefficient of friction modifier and a second flow rate for the second coefficient of friction modifier; and a step of providing the control signal.
• the method may include a further read-in step of reading a deviation from the mass flow and granule speed setpoint, wherein in the determining step, the control signal is checked for a predefined threshold to generate an error signal and the error signal in the providing step provide.
• a control device on which the method is carried out to respond to deviations from the desired value of the mass flow and the granule velocity, which are caused by unspecified disturbing factors, by readjusting the control variables.
• a predefined threshold value for example in the case of deviations from a limit value previously stored in the control device
• an error message can be generated, which is transmitted to the vehicle, braking and / or traction control and further processed.
• the method may include a further step of reading, in which a first level of the first reservoir and a second level of the second Vorratsbe- be imported container.
• the levels may be compared to a predefined minimum level to adjust, in the step of determining, the control signal for the purpose of conserving the friction coefficient modifier and providing a speed adjustment signal in the providing step if a level is below the predefined minimum level. For example, if a predefined minimum filling quantity, that is, one previously stored, is undershot or defined limit value for the minimum level of the reservoir an error message can be generated, for example, the vehicle, braking and / or traction control is provided or transmitted to this. After that, it is possible to switch over to alternative characteristic curves, which have the objective of saving coefficient of friction modifier, assuming a lower maximum speed.
• Also of advantage is a computer program product with program code which can be stored on a machine-readable carrier and used to carry out the method when the program is executed on a computer or a control device.
• An application device for coefficients of friction modifiers can have at least one metering device which can be provided to dispense a grit and / or particles of a grit onto a rail.
• the grit can be composed of particles.
• a friction value-modifying liquid can be provided.
• the particles and / or the liquid may be suitable for improving a traction between the rail and the wheel, for example by increasing friction between the wheel and the rail.
• Grit may include, for example, sand and / or ceramic particles.
• a dispensing device for coefficient of friction modifiers can have a plurality of storage containers for receiving and providing spreading material or particles or liquids.
• a metering device can be designed to dispense friction modifiers from a plurality of storage containers on a rail. It can be provided that a metering device is able to mix coefficient of friction modifiers from a plurality of storage containers in order to apply a corresponding coefficient of friction modifier to the rail. It is conceivable that a metering device is designed to dispense a mixture of friction coefficient modifiers of different types and / or sizes in accordance with the control device. In particular, friction coefficient modifiers can be mixed from different storage containers.
• An application device can have one or more metering devices, each with associated storage containers.
• the spreading equipment tion may have multiple reservoirs to accommodate Reibwertmodifikatoren.
• a metering device can be designed to dispense a coefficient of friction modifier, a grit or particles of a grit onto the rail or directly into a gap between a wheel and the rail.
• a metering device can be designed to apply coefficient of friction modifiers from a plurality of storage containers to the rail. It can be provided that a metering device can be controlled by the control device in such a way that parameters of a quantity to be delivered of one or more coefficients of friction modifiers can be set. It is conceivable that different coefficients of friction modifiers can be accommodated in different storage containers of the dispensing device. In particular, it can be provided that differ different Reibwertmodifikatoren in terms of material, size, electrical conductivity and / or shape from each other.
• a type of particles having a certain size and of a certain material are accommodated in a storage container, while in another storage container particles of a different material and / or a different size are accommodated and in a further storage container a friction modifying liquid or paste is added.
• a particle size may refer to an average particle size.
• the control device is designed to control the dispensing device for dispensing different Reibwertmodifikatoren such as liquids, particles or grit. It is conceivable that the control device is able to control the dispensing device for dispensing friction coefficient modifiers from a plurality of storage containers based on coefficient of friction modifier characteristic data.
• Reibwertmodifikator- property data can be stored in a memory device of the controller and affect, for example, frictional properties and / or hardness and / or material and / or size and / or trickle properties of the particles and / or fluidic properties.
• the dispensing device can be designed to be able to dispense friction value modifiers from different storage containers onto the rail in accordance with the control device.
• a coefficient of friction modifier can be understood as meaning particles, liquids or friction pencils as well as pastes.
• the dispensing device can have a plurality of reservoirs and a plurality of dispensing devices, as described herein. It is conceivable that the dispensing device is able to apply different Reibwertmodifikatoren such as different grit or liquids on the rail. Reibwertmodifikatoren may differ in particular with regard to material, size and / or quality.
• a basis can be created to consider the friction coefficient modification system in the brake calculation as a safety-relevant part (SIL according to EN50126, EN50128, EN50129).
• SIL safety-relevant part
• an optimized use of different Reibwertmodifikatoren and an optimized mass flow of Reibwertmodifikatoren depending on the current coefficient of adhesion can be achieved.
• Another advantage is a fully automatic check of the system while stationary and while driving when activated.
• control signal in the step of determining, may be determined using the conductivity.
• FIG. 1 shows a schematic representation of a rail vehicle with a delivery device for coefficient of friction modifiers according to one embodiment of the present invention
• FIG. 2 shows a schematic representation of a control device for a dispensing device for coefficient of friction modifiers for a rail vehicle according to an exemplary embodiment of the present invention
• FIG. 3 shows a schematic illustration of a dispensing device for coefficient of friction modifiers according to an exemplary embodiment of the present invention
• FIG. 4 shows a schematic representation of a dispensing device for coefficient of friction modifiers with a control device according to an exemplary embodiment of the present invention.
• FIG. 5 shows a flowchart of a method for controlling a delivery device for coefficient of friction modifiers for a rail vehicle according to an exemplary embodiment of the present invention.
• FIG. 1 shows a schematic illustration of a rail vehicle 100 with a delivery device 102 for friction coefficient modifiers 104, 106 according to an embodiment of the present invention.
• the dispensing device 102 has a first reservoir 108 for a first Reibwertmodifikator 104 and a second reservoir 1 10 for a second Reibwertmodifikator 106.
• the first Reibwertmodifikator 104 is different from the second Reibwertmodifikator 106th
• the first reservoir 108 is configured for a first coefficient of friction modifier 104 in the form of a friction modifying fluid.
• the dispensing device 102 has a first metering device 1 12 for the first reservoir 108 and a second metering device 1 14 for the second reservoir 1 10.
• the dispensing device 102 is connected to a control device 1 16 for the dispensing device for a Reibwertmodifikator 104, 106.
• the control device 1 16 provides a control signal 1 18 ready.
• the first metering device 1 12 can provide a determinable amount of the first coefficient of friction modifier 104 and the second metering device 1 14 can provide a determinable amount of the second coefficient of friction modifier 106.
• the metering device 1 12, 1 14 can deploy a determinable amount of a determinable mixture of the first Reibwertmodifikators 104 and the second Reibwertmodifikators 106.
• seals and conveyors of the metering device 1 12, 1 14 adapted to the properties of the respective Reibwertmodifikatoren 104, 106.
• the dispensing device 102 has a delivery tube 120.
• the delivery tube 120 is formed as a tube.
• the coefficient of friction modifier 104, 106 exits and is discharged or injected into a gap between a wheel 122 of the rail vehicle 100 and the rail 124 on which the rail vehicle 100 travels.
• the spreading device 102 which can also be referred to as sanding module 102, consists of two sand boxes 110 and a liquid container as storage container 108, each with a pneumatically or mechanically controlled metering and conveying device and a hose as conveying pipe 120.
• a conveying sensor can optionally be attached to the conveying pipe 120 be arranged, which measures based on the measurement of the granules adhering to the electrical charge by means of a mass flow comprehensive antenna, in which a charge displacement is influen extent, the flow rate or the mass flow of Reibwertmodifikators.
• the antenna comprising the mass flow may alternatively be designed as a capacitor, with which the electrical susceptibility of the mass flow is measured.
• a parallel compensation antenna may include a portion of a flow of exhaust air diverted from the mass flow to measure the electrical susceptibility of the delivery air. Thus, an error can be compensated by the electrical susceptibility of the air.
• the antenna signal is compared by means of a second similar antenna, which is mounted at a specific distance in the direction of flow, and from this the granule velocity is calculated.
• the conveyor sensor can also be integrated in the sand heating pipe ("SHR").
• the control device 1 16 can be used in a brake control of the rail vehicle 100. depending on the requirements of the vehicle control using the rail condition, the environmental conditions and / or the previously determined particle data one of the reservoir 1 10, or sand boxes 1 10, for spreading a Reibwertmodifikators or the reservoir 108, or liquid keits intender 108 for deployment a friction modifying liquid on the
• Rail 124 responds.
• a device within the brake control is designed to detect the instantaneous friction coefficient between wheel 122 and rail 124.
• a fill level sensor or a sand level sensor can be arranged in the storage containers 108, 110.
• the control device 1 16 may be a control device 1 16 shown in FIG. 1 for a rail vehicle 100.
• the control device 1 16 has a device 226 for reading in a control signal 228, a device 230 for determining a first delivery rate 232 for the first Reibwertmodifikator 104 and a second delivery rate 234 for the second Reibwertmodifikator 106 using the control signal 228 and means 236 for providing the Control signal 1 18 on.
• the control signal 228 represents environmental data and, alternatively or additionally, a coefficient of friction between a rail and a wheel of the rail vehicle.
• the control signal 1 18 includes information about the first flow 232 and the second flow 234.
• the control device 16 has a device for reading in a current coefficient of friction between the wheel and the rail. If the control device 1 16 has a device for reading in the instantaneous friction coefficient, the device 230 for determining is designed to determine the first delivery quantity and the second delivery quantity using the current coefficient of adhesion as a substitute or supplementary value for the static friction value. Of course, this also applies to further flow rates when the dispensing device to be controlled has further storage containers for further coefficient of friction modifiers.
• the control device 16 has a device for reading in information about the driving state, in particular information about a vehicle speed.
• the means 230 for determining is adapted to determine the first delivery amount alternatively or additionally, the second delivery rate using the information about the driving condition, in particular the vehicle speed.
• the control device 16 has a device for reading in information about a fill level of the first storage container and, alternatively or in addition, for at least the second storage container. If the control device 16 has a device for reading in information about a fill level, the device 230 for determining is designed to determine the first delivery quantity and at least the second delivery quantity using the information about the fill level. Furthermore, the vehicle speed can be adjusted to reduce the consumption of Reibwertmodifikatoren.
• said reading-in devices can be combined in a common reading-in device, which can be designed as an interface.
• the device 226 for reading in a control signal 228 may also be combined with one or more of the optional devices for reading in an interface or, alternatively, a device for reading in.
• FIG. 3 shows a schematic illustration of a dispensing device 102 for friction coefficient modifiers 104, 106 according to an embodiment of the present invention.
• the dispensing device 102 may be an embodiment of an application device 102 shown in FIG. 1.
• the dispensing device 102 has a first reservoir 108, a second reservoir 1 10 and a further reservoir 338.
• the first reservoir 108 is a first metering device 1 12
• the second reservoir 1 10 is a second metering device 1 14
• the other reservoir 338 is associated with a further metering device 340.
• the metering devices 108, 110, 338 each have a fill level sensor 342.
• a conveyor sensor 344 On a delivery pipe 120, which is connected to the storage containers 108, 1 10, 338 or with the metering devices 1 12, 1 14, 340, a conveyor sensor 344 is arranged.
• the metering devices 1 12, 1 14, 340, the conveyor sensor 344 and the level sensors 342 are connected to a control device 1 16.
• the control device 16 is connected to a brake control device 346.
• the brake control device 346 is operatively connected to a brake 348, which is not visible on the wheel 122.
• the storage container 108, 1 10, 338 are formed for receiving coefficients Reibwertmodifika- 104, 106, 350.
• a first Reibwertmodifikator 104 in the second reservoir 1 10 a second Reibwertmodifikator 106 and in another reservoir 338 another Reibwertmodifikator 350 stockpiled.
• the second coefficient of friction modifier 106 is a friction-modifying fluid as a substitute or additionally a granular coefficient of friction modifier and, alternatively or additionally, a pasty coefficient of friction modifier and, alternatively or in addition, a solid abrasive.
• the dispensing device 102 has at least one further storage container 338 for a further coefficient of friction modifier 350 and / or a further metering device 340 for the further storage container 338.
• the deployment device 102 includes at least one lubrication pin applicator that lubricates a wheel flange of the rail vehicle in response to the control signal.
• dispensing device 102 includes at least one friction pin applicator and / or lubricating pin applicator that rubs on the tread of a wheel of the rail vehicle in response to the control signal.
• the dispensing device 102 has a device 342 for monitoring a fill level in the first reservoir 108 and simultaneously or alternatively in the second reservoir 1 10. If the dispensing device 102 has at least one further storage container 338, the additional storage container may also have a device 342 for monitoring the filling level.
• the device 342 for monitoring the fill level can be designed as a fill level sensor 342 or alternatively as a particle level sensor 342 or as a liquid level sensor 342 for monitoring a minimum fill level limit in the reservoir.
• a dispensing device 102 comprises a plurality of storage containers 108, 110, 338, one or more metering and conveying devices 112, 114, 340, a conveyor tube 120, a conveyor sensor 344 for detecting the mass flow and / or the speed of the granules, a control device 16, a device 346 within the braking and traction control for detecting the instantaneous friction coefficient between wheel 122 and rail 124 and a device 342 for monitoring the level in the reservoir.
• the metering and conveying device 1 12, 1 14, 340 is designed in such a way that the mass flow can be adjusted and activated via a manipulated variable by the controller or control device 1 16.
• the control device 1 16 the previously determined characteristics of manipulated variable via mass flow and optimum mass flow and Reibwertmodifikator about vehicle speed and / or momentary static friction are stored.
• the conveyor sensor 344 detects the mass flow and / or the granule speed.
• the storage containers 108, 110, 338 with different coefficient of friction modifiers 104, 106, 350 (different material , Size, texture).
• the means 342 for monitoring the level is executed as a level sensor or level limit switch.
• the device 346 within the braking and / or traction control determines in response to anti-skid or anti-skid current Momentreibwert and transmits this together with vehicle speed and request the Reibwertmod Eaton to the controller 1 16.
• the manipulated variable is set according to the stored in the control device 1 16 characteristics.
• the mass flow is monitored by means of the conveyor sensor 344.
• the control device 1 16 responds to deviations from the desired value of the mass flow and the granular velocity, which are caused by unspecified interference factors, by readjusting the manipulated variables. In the case of deviations which exceed a limit value previously stored in the control device 16, the control device 16 generates an error message which is transmitted to the vehicle, brake and / or traction control. Falls below a previously stored in the control device 1 16 limit value for the minimum level of the reservoir 108, 1 10, 338 generates the Control device 1 16 an error message that is transmitted to the vehicle, braking and / or traction control. After that can be switched to alternative characteristics, which have the goal of saving Reibwertmodifikator, assuming a lower maximum speed. The instantaneous friction coefficient is continuously determined by the traction control 346 and compared with the setpoint in the control device 1 16. In the event of deviations, the characteristic curves are optimized accordingly and the data is saved for later evaluation.
• control device 1 16 generates an error message that is not transmitted to the vehicle, brake and / or traction control unit when it has not reached a limit value for the minimum friction coefficient that was previously stored in the control device 16.
• the dispensing device 102 has three storage containers 108, 110, 338.
• each storage container 108, 1 10, 338 different Reibwertmodifikatoren 104, 106, 350 are added, which differ in material, size and / or quality and have different frictional properties.
• the amount or amount of friction value modifier removed from at least one other storage container 108, 110, 338 can be increased in the control device 16 .
• FIG. 4 shows a schematic illustration of a dispensing device 102 for friction coefficient modifiers 104, 106, 350 with a control device 16 according to an exemplary embodiment of the present invention.
• the dispensing device 102 may be the dispensing device 102 already shown in FIG. 1 or FIG. 3.
• the dispensing device 102 is associated with a wheel 122 of a rail vehicle.
• the dispensing device 102 is designed to deploy in the direction of travel 452 in front of the wheel 122 at least one Reibwertmodifikator.
• a control device 1 16 is configured to receive signals and a control signal 1 18 to a driver 454 for a
• the first reservoir 108 is designed to receive a liquid as Reibwertmodifikator.
• the second reservoir 1 10 and a further reservoir 338 are provided for receiving a second or further Reibwertmodifikators, wherein the Reibwertmodifikatoren a reibwertmodifiatingde liquid, a granular Reibwert- modifier, a pasty coefficient of friction modifier or, alternatively, a solid abrasive.
• a delivery tube 120 extends from the second storage container 110 and the further storage container 338 in the direction of the gap between the rail 124 and the wheel 122, in order to introduce a coefficient of friction modifier into the gap.
• another conveyor tube 456 extends from the first reservoir 108 in the direction of the gap between the rail 124 and the wheel 122.
• a conveyor sensor 344 is disposed on the conveyor tube 120 to monitor the mass flow of the coefficient of friction modifier in the conveyor tube 120.
• a dispensing nozzle 458 is disposed at the end of the conveying tube 120 and at the end of the further conveying tube 456.
• a sensor 460 for monitoring a degree of contamination of the rail 124 is arranged in the direction of travel 452 in front of the wheel 122.
• a sensor 462 may be arranged for monitoring a rail condition.
• the rail state can be detected, for example, optically or electrically.
• the sensors 460, 462 are connected to the control device 1 16.
• a transferable adhesion value 464 can be determined by a measuring device connected to the wheel 122 and provided to the control device 16.
• information about rail condition 466 may be provided to controller 1 16 from a database or cadastre using information about a position of the rail vehicle.
• the controller 16 may process the sensor signals of the sensors 460, 462, the information about the transmittable adhesion value 464 and additionally or alternatively information about the rail state 466 and provide a control signal 18 using the signals or information mentioned.
• the spreader 102 is implemented as a modulus of friction modifier per wheel 122 and consists of a sand tank 110 containing coarse quartz sand, a sand tank 338 containing fine corundum sand, and a liquid tank 108 with lime soap grease lubricant each a pneumatically or mechanically controlled metering and conveying device 1 12, 1 14, 340 and a hose as conveying pipe 120 and a Schmierstattapplikator 468 for wheel flange lubrication.
• the dispensing device comprises sensors 344 (internal including the fill level sensors 342 (not shown in FIG.
• the control device 1 16 is designed as a controller which, depending on the above-mentioned, recorded or known data (Reibwertmodifikator, environmental conditions, rail condition, driving condition, ...), the corresponding optimal Reibwertmodifikator (quartz sand, lubricant, ...) incidentstingt or the corresponding dosing and conveying device activated and readjusted accordingly.
• 5 shows a flow chart of a method 500 for controlling a delivery device for coefficient of friction modifiers for a rail vehicle according to an exemplary embodiment of the present invention.
• the rail vehicle may be an exemplary embodiment of a rail vehicle 100 already shown in FIG. 1.
• the dispensing device can be a dispensing device 102 shown in FIG. 1, FIG. 3 or FIG. 4.
• the dispensing device comprises a first reservoir for a first coefficient of friction modifier in the form of a reibwertmodifizie- liquid and at least a second reservoir for a second different from the first Reibwertmodifikator Reibwertmodifikator and a first metering device for the first reservoir and a second metering device for the second reservoir.
• the first coefficient of friction modifier and / or the second coefficient of friction modifier and / or a mixture of the first and the second coefficient of friction modifier can be output.
• the method 500 comprises a step 510 of reading in a control signal, a step 520 of determining a control signal for the application device using the control signal and a step 530 of providing the control signal.
• control signal represents environmental data and alternatively or additionally a coefficient of friction between a rail and a wheel of the rail vehicle.
• the control signal represents information about a first flow rate for the first coefficient of friction modifier and a second flow rate for the second coefficient of friction modifier.
• the control signal also represents further flow rates for the other Reibwertmodifikatoren.
• step of determining a control signal 530 step of providing the control signal

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• Engineering & Computer Science (AREA)
• Transportation (AREA)
• Mechanical Engineering (AREA)
• Regulating Braking Force (AREA)
• Lubricants (AREA)

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• 2013
  • 2013-10-11 DE DE201310016881 patent/DE102013016881A1/de not_active Ceased
• 2014
  • 2014-10-10 PL PL14783815T patent/PL3055180T3/pl unknown
  • 2014-10-10 EP EP19210821.5A patent/EP3656625B1/de active Active
  • 2014-10-10 ES ES14783815T patent/ES2836323T3/es active Active
  • 2014-10-10 EP EP14783815.5A patent/EP3055180B1/de active Active
  • 2014-10-10 WO PCT/EP2014/071716 patent/WO2015052307A1/de active Application Filing

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