Controlling the delivery of adhesion promoters in rail vehicles

Abstract

The invention comprises a device and a method for controlling the output of an adhesion promoter of a rail vehicle (S), the device comprising at least one device (1) for outputting an adhesion promoter, the device being assigned to a wheel (R1) of the rail vehicle. The system further comprises at least one wheel speed sensor (2) and / or wheel acceleration sensor (2a) and / or wheel torque sensor (2b), which measure the wheel speed or wheel rotation speed and / or wheel acceleration of a specific wheel and / or wheel torque acting on the wheel. A measuring instrument (4, 5) is also provided, which determines the vehicle speed and / or acceleration of the entire rail vehicle in the longitudinal direction of the vehicle. A calculation unit (6) is suitable for determining the ratio of the wheel speed or wheel rotation speed of the wheel to the speed of the rail vehicle, or / and the ratio of the wheel acceleration to the acceleration of the rail vehicle in the longitudinal direction, and / or the ratio between a nominal torque and an actual torque acting on the wheel. The at least one ratio, in particular a change in the ratio, is taken into account. The output of the adhesion promoter of the device (1) for outputting the adhesion promoter is controlled in accordance with the change in the at least one ratio.

Description

Technical Field

[0001] The invention relates to a control of the output of a adhesion promoter on a rail vehicle in order to control the output and distribution of the adhesion promoter on the rail in advance of or in the vicinity of the wheels accordingly. Background Art

[0002] A great advantage of rail vehicles with steel wheels running on steel rails is the relatively low running resistance; however, the low resistance of the wheel-rail contact simultaneously limits the ability to accelerate or decelerate the rail vehicle via the wheels. The possible force transmission is already limited when the rail is dry. The potential for force transmission is further reduced when the rail is dirty, wet or icy. If braking is applied under these conditions, even full braking or rapid braking, the following problems arise: deceleration is not optimal due to wheel locking and wheel damage may occur.

[0003] Therefore, in the prior art, rail vehicles are usually equipped with centrifugal or anti-skid systems. The centrifugal or anti-skid system can control the wheel speed, that is, the speed of a single wheel or a group of wheels, so that the available force lock (the factor of the tangential force that can be transmitted in the longitudinal direction of the vehicle relative to the wheel load acting orthogonally) is used as well as possible for vehicle driving, but also for braking. In many rail vehicles, this sliding protection and centrifugal protection are additionally supplemented by an application system of an adhesion promoter, such as a sand spreading device, so that an adhesion promoter, such as sand, is output in front of or near certain wheels of the rail vehicle. This adhesion promoter improves the force lock from the wheel to the track. However, the adhesion promoter does not have to be a solid, but can be a fluid, a gel or smoke, a mist or an aerosol.

[0004] In the prior art, patent document DE 4137546 C2 discloses a method for determining the travel speed of a rail vehicle. To calculate the travel speed, the static friction coefficient between the wheels of the rail vehicle and the rail is measured. In addition, a microcomputer is disclosed, by which the braking force of the rail vehicle is influenced to prevent wheel locking.

[0005] In the known document DE60124993T2, a sand spreading device for rail vehicles is disclosed, by which sand is sprayed between the wheels and the rails to prevent slipping by means of compressed air. The spray pressure of the compressed air can be changed according to the driving wind.

[0006] Furthermore, patent document DE 10 2018 209 920 B3 is known in the prior art, which relates to humidity on the rail and reduced adhesion values ​​between the rail and the wheels of a rail vehicle. This document discloses a method for predicting adhesion values ​​at the contact point between the rail and the wheel rolling on the rail, wherein a plurality of environmental parameters, such as air pressure, air temperature, air humidity, are taken into account.

[0007] The device for dispensing adhesion promoter serves to introduce adhesion promoter into the wheel-rail contact when particularly low force-locking conditions exist and thus to increase the force-locking value. The driving or braking capacity of the rail vehicle can thus be improved. The device for dispensing adhesion promoter according to the prior art applies a constant or speed-dependent predetermined dispensing rate (i.e., dispensing of adhesion promoter per time unit or per distance covered).

[0008] With each wheel rolling on the applied adhesion promoter, its effect is reduced. The available force-locking values ​​vary significantly depending on the contamination of the track and can reach below 0.01 under the influence of crushed leaves, for example. In dry tracks, force-locking values ​​are usually 0.15 or more.

[0009] Under such conditions, it is usually not possible to equip one of the front wheels with a device for delivering adhesion promoter. Rail vehicles are therefore usually equipped with a plurality of devices for delivering adhesion promoter along the vehicle. However, with a constant or speed-dependent predetermined delivery rate per time unit and per passing value, the consumption of adhesion promoter per rail vehicle can become very high and the force connection cannot be increased in a targeted manner, for example at locations where force connection is particularly required. Therefore, the delivery rates in the prior art cannot be adapted to the force connection that exists at the wheels along the train during braking.

[0010] Therefore, in such systems, the device for delivering adhesion promoter to one or more specific wheels cannot be controlled locally or individually in a targeted manner. In such systems, for example, too much adhesion promoter (e.g. sand) may be delivered, which significantly increases the consumption of adhesion promoter without increasing the frictional connection sufficiently or in a targeted manner. Summary of the invention

[0011] It is therefore an object of the present invention to provide an improved control of the delivery of an adhesion promoter to a rail vehicle in order to eliminate the disadvantages of the prior art.

[0012] This object is achieved by a device according to the invention for controlling the delivery of an adhesion promoter to a rail vehicle and by a method according to the invention for controlling the delivery of an adhesion promoter to a rail vehicle.

[0013] The invention comprises a device for controlling the delivery of an adhesion promoter to a rail vehicle, comprising at least one device for delivering an adhesion promoter, which is associated with a wheel of the rail vehicle and is preferably arranged in the vicinity of the wheel of the rail vehicle.

[0014] Preferably, the device for delivering the adhesion improving agent is located directly in front of certain wheels.

[0015] The system further comprises at least one wheel speed sensor and / or wheel acceleration sensor, which measures the wheel speed or rotational speed or wheel acceleration of a determined wheel and / or a torque sensor for determining the actual torque acting on the wheel. The measured wheel acceleration is preferably the angular acceleration of the wheel. The rated torque acting on the wheel is determined according to the brake system structure or is known from the brake system structure.

[0016] A measuring device is also provided, which determines the vehicle speed and / or acceleration of the entire rail vehicle in the longitudinal direction of the vehicle. The calculation unit is suitable for determining the ratio of the wheel speed or wheel rotation speed of the wheel to the speed of the rail vehicle and / or the ratio of the wheel acceleration to the acceleration of the rail vehicle in the longitudinal direction and / or the ratio between the setpoint torque acting on the wheel and the actual torque.

[0017] At least one of the ratios, in particular a change in the ratio, is taken into account. The output of the adhesion promoter of the device for outputting the adhesion promoter is controlled as a function of the change in the at least one ratio. The output of the adhesion promoter of the device for outputting the adhesion promoter is therefore a controlled variable.

[0018] It is thus possible to react directly to slip or to a reduction in the frictional connection at certain wheels, since adhesion promoter is delivered to the rail in a targeted manner at these wheels in order to reduce slip or the reduction in the frictional connection again.

[0019] Preferably, the control of the output of the adhesion promoter of the device for outputting the adhesion promoter not only takes into account one wheel, but also multiple wheels. These are preferably wheels assigned to the device for outputting the adhesion promoter, for example the two closest wheels or the five closest wheels. In this case, the calculation unit is suitable for determining the ratio of the wheel speed or wheel speed of at least one other wheel to the speed of the rail vehicle, and / or the wheel acceleration of at least one other wheel to the acceleration of the rail vehicle in the longitudinal direction, and / or the ratio of the rated torque acting on the at least one other wheel to the actual torque of at least one other wheel, and also taking into account the calculation results to control the output of the adhesion promoter of the device for outputting the adhesion promoter.

[0020] This ensures that the adhesion promoter delivered on the track reaches the nearest wheel that runs onto the delivered adhesion promoter. The delivery of adhesion promoter can thus be controlled locally, that is to say intervention is carried out at the wheel or wheels at which a reduction in force flow is observed and adhesion promoter is delivered accordingly. As a result, adhesion promoter does not need to be delivered over the entire length of the rail vehicle, which saves adhesion promoter and further improves the force connection at a specific wheel.

[0021] Preferably, in the system, each device for outputting an adhesion promoter is provided with a measuring instrument for measuring the output of the adhesion promoter, and the measuring instrument measures the current actual output of the adhesion promoter of the device for outputting the adhesion promoter. By monitoring the parameters, the actual output rate can be controlled accordingly, and deviations or failures of the corresponding device for outputting the adhesion promoter can be avoided.

[0022] Preferably, at least two devices for dispensing adhesion promoters (one for each track) are provided on the rail vehicle, if not even multiple devices for dispensing adhesion promoters (along the vehicle). The devices are all controlled locally and take into account the data of each wheel assigned to the corresponding device for dispensing adhesion promoters. It is also possible to use the data of more wheels to control the dispensing of adhesion promoters from the devices for dispensing adhesion promoters.

[0023] Preferably, a data transmission unit is also provided, which enables the corresponding computing units to communicate with each other and to exchange measurement results and calculation results. Thus, one or more controlled devices for outputting adhesion promoters can be provided along the length of the vehicle, in which parameters are exchanged via a data transmission unit, for example a data bus.

[0024] If it should now be verified that the device for outputting adhesion promoter has reached its maximum output rate of adhesion promoter, although according to the calculation or control by the calculation unit, actually more adhesion promoter must be output, then other devices for outputting adhesion promoter at other locations of the rail vehicle can be controlled via the data transmission unit so that correspondingly more adhesion promoter can be output at these other locations.

[0025] Thus, if the calculation unit determines that the adhesion promoter output rate calculated for the respective device for discharging adhesion promoter is higher than the maximum (e.g. technically maximum possible) adhesion promoter output rate, the deviation between the actually calculated adhesion promoter output rate and the maximum adhesion promoter output rate can be transmitted via the data transmission unit to another calculation unit, which causes the respective other device for discharging adhesion promoter to correspondingly supplement the deviation of the adhesion promoter output rate determined by the calculation unit and to correspondingly discharge more adhesion promoter there, provided that the maximum adhesion promoter output rate of the respective other device for discharging adhesion promoter is not exceeded. Otherwise, another device for discharging adhesion promoter can also be controlled, or the deviation between the actually calculated adhesion promoter output rate and the maximum adhesion promoter output rate of the one device for discharging adhesion promoter can be distributed to a plurality of further devices for discharging adhesion promoter.

[0026] It is also advantageous if the device for dispensing the adhesion promoter fails or if there is no longer any adhesion promoter in the device.

[0027] Furthermore, for controlling the delivery of adhesion promoter by one or more devices for delivering adhesion promoter, an upper limit value and / or a lower limit value can be predefined, and when the upper limit value is exceeded and / or the lower limit value is fallen below, the delivery of adhesion promoter by the delivery device for adhesion promoter can be increased or reduced. Thus, there is a non-positive region in which no intervention in the delivery of adhesion promoter takes place. This makes the control simpler and less complex, and a reaction is only made when the non-positive connection is too low and a very large amount of adhesion promoter must be delivered, or when the non-positive connection is too high and adhesion promoter can therefore be saved.

[0028] The invention also relates to a method for controlling the output of an adhesion promoter for a rail vehicle, the method comprising the following steps:

[0029] a) detecting the speed and / or acceleration of the rail vehicle in the longitudinal direction;

[0030] b) detecting the wheel speed and / or the wheel rotation speed or the wheel acceleration of the wheels of the rail vehicle and / or the actual wheel torque acting on the wheels;

[0031] c) determining the ratio of the wheel speed or wheel rotational speed of the wheel to the speed of the rail vehicle and / or the ratio of the wheel acceleration of the wheel to the acceleration of the rail vehicle in the longitudinal direction and / or the ratio of the actual torque acting on the wheel to the setpoint torque,

[0032] d) controlling the output of adhesion improving agent of the device for outputting adhesion improving agent as a function of the ratio value obtained in step c), wherein the ratio value determined in step c) for the wheel is used for the control.

[0033] The measured wheel acceleration is preferably the angular acceleration of the wheel.

[0034] Preferably, for each device for delivering adhesion improving agent, a plurality of wheels are considered, which wheels are arranged, for example, in close proximity to the corresponding device for delivering adhesion improving agent. Thus, a device for delivering adhesion improving agent is provided for a certain number of wheels.

[0035] Preferably, at least two devices for delivering adhesion promoters provided on the rail vehicle are also connected to a data transmission unit which is suitable for exchanging operating and control parameters. The data transmission unit is preferably a data bus.

[0036] If then, for both devices for outputting adhesion promoters, a maximum output rate of adhesion promoter (i.e., a technically possible maximum output of adhesion promoter or a set value determined by means of, for example, the traction speed) is determined, and the calculation unit determines that the calculated output rate of adhesion promoter for the respective device for outputting adhesion promoter is higher than the maximum output rate of adhesion promoter, then the deviation between the calculated output rate of adhesion promoter and the maximum output rate of adhesion promoter can be transmitted via the data transmission unit to another calculation unit, which controls another device for outputting adhesion promoter. Then, the respective other device for outputting adhesion promoter correspondingly supplements the deviation of the output rate of adhesion promoter determined by the calculation unit, as long as the maximum output rate of adhesion promoter of the respective other device for outputting adhesion promoter is not exceeded.

[0037] In the method according to the invention, an upper or lower limit value for determining the parameter can preferably be stored or predefined, and when the upper limit value is exceeded or the lower limit value is fallen below, the output of the adhesion promoter of the device for outputting the adhesion promoter is increased or reduced accordingly.

[0038] In this case, a certain tolerance range can be stored within which a non-positive connection between wheel and rail is tolerable, but if this preferred range is left out, adhesion promoter is dispensed accordingly. At the same time, when the required non-positive connection level is achieved, the delivery of adhesion promoter can be reduced in order to nevertheless reach a predefined limit value.

[0039] Based on the device according to the invention and the method according to the invention, it is possible to achieve an individually adaptable control of the output rate of the adhesion promoter, in particular a locally adaptable control of the output rate of the adhesion promoter. In addition, such a system can achieve a drive-optimized, delay-optimized or consumption-optimized quantity control of the adhesion promoter. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] A preferred embodiment is described in detail below with reference to the accompanying drawings:

[0041] Figure 1 A rail vehicle is shown by way of example, which is equipped with the system according to the invention for controlling the delivery of an adhesion promoter.

[0042] Figure 2 The present invention shows in greater detail a computing unit which is contained in a system of a rail vehicle for controlling the output of an adhesion promoter. DETAILED DESCRIPTION

[0043] exist Figure 1 A rail vehicle S is shown in the figure, on which a plurality of wheels R1, R2; R1', R2'; R1", R2" are arranged, wherein two wheels are always arranged closely side by side. A device 1, 1', 1" for outputting an adhesion improving agent is arranged near each of the wheel pairs R1, R2; R1', R2'; R1", R2". A measuring instrument 3, 3', 3" for measuring the output of the adhesion improving agent is directly fixed to each of these devices. A corresponding wheel speed sensor 2, 2', 2" is arranged on each wheel R1, R2; R1', R2'; R1", R2". In addition, a computing unit 6, 6', 6" is arranged adjacent to each wheel pair. Generally, a measuring instrument 4 for vehicle speed and a measuring instrument 5 for vehicle acceleration in the longitudinal direction of the vehicle as well as a data transmission unit 7 are also arranged on the vehicle.

[0044] When the rail vehicle moves to the right, the wheels R1 and R2 are provided with a device 1 for delivering adhesion promoter (the wheels R1 ′ and R2 ′ are respectively provided with a device 1 ′ for delivering adhesion promoter and the wheels R1 ″ and R2 ″ are respectively provided with a device 1 ″ for delivering adhesion promoter).

[0045] However, there is no fixed assignment when the rail vehicle moves to the left; the wheels R1 and R2 can be provided with a device 1 ′ for delivering adhesion promoter (the wheels R1 ″ and R2 ″ can be provided with a device 1 for delivering adhesion promoter accordingly).

[0046] Therefore, the calculation units 6 , 6 ′, 6 ″ respectively locally calculate and control the output of the adhesion promoter of the device 1 , 1 ′, 1 ″ for outputting the adhesion promoter.

[0047] exist Figure 2 , the input parameters and output parameters in the calculation unit 6 are shown. Here, in general, the measured values ​​of the measuring instrument 4 for the vehicle speed and the measuring instrument 5 for the vehicle acceleration in the longitudinal direction of the vehicle are queried. In addition, if information from other calculation units 6' plays a role here, the calculation unit 6 communicates with the data transmission unit 7. In addition, the calculation unit 6 queries the data of the two wheel speed sensors 2, 2 and the measuring instrument for measuring the output of the adhesion improving agent 3. The calculation unit 6 then controls accordingly and calculates the output rate of the device for outputting the adhesion improving agent 1 accordingly. The value is then output to the device for outputting the adhesion improving agent 1.

[0048] Examples of control that can be performed using the system according to the invention and the method according to the invention are as follows:

[0049] For example, an optimization of the acceleration or deceleration behavior can be performed. The delivery rate of the adhesion promoter by the device 1, 1', 1" for delivering the adhesion promoter is increased to the maximum permissible or possible delivery rate until the force connection of all wheels R1, R2, . . . , Rn is improved in such a way that the traction acceleration or traction deceleration observed by the measuring device 5 in the longitudinal direction of the vehicle is within the permissible or reduced capacity compared to a dry track.

[0050] On the other hand, the consumption of the adhesion promoter can also be optimized. The system or method according to the invention can then reduce the amount of the applied adhesion promoter individually to a significantly reduced minimum value. The output rate after the required force lock is reached is then reduced until the actual force lock level drops below the required level again, i.e. at least the required level, in order to ensure reliable acceleration and braking without damaging the wheels. If the driving action or braking action drops too much, the output rate of the adhesion promoter is increased again.

[0051] The invention is not limited to the embodiments shown.

[0052] exist Figure 1 and Figure 2 In the embodiments shown in the figure, wheel speed sensors are respectively shown, but wheel acceleration sensors 2a or wheel torque sensors 2b may also be provided just as well, so that the ratio of the wheel acceleration to the acceleration of the rail vehicle (S) in the longitudinal direction and / or the ratio of the actual torque acting on the wheel (R1) to the rated torque of the wheel (R1) is determined.

[0053] Furthermore, the output rates of the individual devices 1 , 1 ′, 1 ″ for outputting adhesion promoter can also be calculated by the central computing unit.

[0054] The invention comprises a device and a method for controlling the delivery of an adhesion promoter to a rail vehicle S, the device comprising at least one device 1 for delivering an adhesion promoter, which is associated with a wheel R1 of the rail vehicle.

[0055] The system further comprises at least one wheel speed sensor 2 and / or wheel acceleration sensor 2a and / or wheel torque sensor 2b, which measure the wheel speed or wheel rotation speed and / or wheel acceleration and / or wheel torque acting on the wheel of a specific wheel. Measuring instruments 4, 5 are also provided, which determine the vehicle speed and / or acceleration of the entire rail vehicle in the longitudinal direction of the vehicle. The calculation unit 6 is suitable for determining the ratio of the wheel speed or wheel rotation speed of the wheel to the speed of the rail vehicle, or / and the ratio of the wheel acceleration to the acceleration of the rail vehicle in the longitudinal direction, and / or the ratio between the rated torque and the actual torque acting on the wheel. The at least one ratio, in particular the change of the ratio, is taken into account. The output of the adhesion promoter of the device 1 for outputting the adhesion promoter is controlled by means of the change of the at least one ratio.

[0056] Reference numerals list

[0057] S Rail Vehicles

[0058] R1, R2, Rn wheels

[0059] 1, 1', 1" device for delivering adhesion promoter

[0060] 2 Wheel speed sensors

[0061] 2a Wheel acceleration sensor

[0062] 2b Torque sensor

[0063] 3 Measuring instruments for measuring the output of adhesion promoters

[0064] 4 Instruments for measuring vehicle speed

[0065] 5 Instruments for measuring acceleration in the longitudinal direction of the vehicle

[0066] 6 Computational Unit

[0067] 7 Data transmission unit

Claims

1. A device for controlling the output of an adhesion promoter of a rail vehicle (S), the device comprising: at least one device (1) for delivering an adhesion promoter, which is associated with a wheel (R1) of a rail vehicle (S); at least one wheel speed sensor (2), the wheel speed sensor measuring the wheel speed or wheel rotation speed of one of the wheels (R1), and / or at least one wheel acceleration sensor (2a), the wheel acceleration sensor measuring the wheel acceleration of the wheel (R1), and / or at least one torque sensor (2b), the torque sensor measuring the torque acting on the wheel (R1); a first measuring device (4) which is arranged to determine the vehicle speed, and / or a second measuring device (5) which is arranged to determine the vehicle acceleration in the longitudinal direction of the vehicle, A calculation unit (6) is suitable for determining a ratio of a wheel speed or wheel rotation speed of a wheel (R1) to a speed of a rail vehicle (S) or / and a ratio of a wheel acceleration of the wheel (R1) to an acceleration in a longitudinal direction of the rail vehicle (S) and / or a ratio of an actual torque acting on the wheel (R1) to a setpoint torque, and controlling the amount of adhesion promoter delivered by a device (1) for delivering adhesion promoter according to the calculation result, wherein each rail vehicle (S) is provided with at least two devices (1, 1') for delivering adhesion promoter, and the calculation unit (6, 6') is configured to take into account data of at least one wheel (R1, R2, ...., Rn; R1', R2', ...., Rn') for controlling the at least two devices for delivering adhesion promoter, wherein the at least one wheel (R1, R2, ...., Rn; R1', R2', ...., Rn') is assigned to the respective devices (1, 1') for delivering adhesion promoter, wherein data of a corresponding plurality of wheels (R1, R2, ...., Rn; R1', R2', ...., Rn') are used to control a corresponding device (1, 1') for outputting an adhesion promoter, the device further comprising a data transmission unit (7) which is configured to enable the calculation units (6, 6') to communicate and exchange measurement results and calculation results, wherein a maximum output rate of the adhesion promoter can be determined for the at least two devices (1, 1') for outputting an adhesion promoter, And if at least one computing unit (6, 6') determines that the calculated adhesion promoter output rate for the corresponding device (1, 1') for outputting adhesion promoter is higher than the maximum output rate of adhesion promoter, the computing unit (6, 6') is configured to transmit the deviation between the calculated adhesion promoter output rate and the maximum output rate of adhesion promoter to another computing unit (6', 6) via the data transmission unit (7), and the other computing unit is configured to correspondingly supplement the deviation of the adhesion promoter output rate determined by the computing unit (6', 6) for the corresponding other device for outputting adhesion promoter, as long as the maximum output rate of adhesion promoter of the other device for outputting adhesion promoter is not exceeded.

2. The device for controlling the output of an adhesion promoter of a rail vehicle (S) according to claim 1, wherein: The calculation unit (6) is suitable for determining the ratio of the wheel speed of at least one other wheel (R2) to the speed of the rail vehicle (S) and / or the ratio of the wheel acceleration of at least one other wheel (R2) to the acceleration in the longitudinal direction of the rail vehicle (S) and / or the ratio of the actual wheel torque acting on the wheel to the setpoint wheel torque of at least one other wheel (R2), and taking into account the calculation results to control the output of adhesion improving agent by the device (1) for outputting adhesion improving agent.

3. The device according to claim 1, wherein: In order to control the output of adhesion promoter by at least one device (1, 1') for outputting adhesion promoter, an upper limit value and / or a lower limit value (Go, Gu; Go', Gu') can be predefined. When the upper limit value is exceeded and / or the lower limit value is fallen below, the output of adhesion promoter by the device (1, 1') for outputting adhesion promoter can be increased or reduced.

4. The device according to any one of claims 1 to 3, wherein: Furthermore, a third measuring device (3) for measuring the delivery of adhesion promoter is provided, which is provided for measuring the current actual delivery of adhesion promoter of the device (1) for delivering adhesion promoter.

5. A method for controlling the output of an adhesion promoter of a rail vehicle (S), the method comprising the following steps: a) detecting the speed and / or acceleration in the longitudinal direction of the rail vehicle (S); b) detecting a wheel speed and / or a wheel rotation speed or a wheel acceleration of a wheel (R1) of a rail vehicle and / or an actual wheel torque acting on the wheel (R1); c) determining the ratio of the wheel speed or wheel rotational speed of the wheel (R1) to the speed of the rail vehicle (S) and / or the ratio of the wheel acceleration of the wheel (R1) to the acceleration in the longitudinal direction of the rail vehicle (S) and / or the ratio of the actual torque acting on the wheel (R1) to the setpoint torque, d) controlling the output of adhesion improving agent by the device (1) for outputting adhesion improving agent as a function of the ratio value obtained in step c), wherein the ratio value determined in step c) for the wheel (R1) is used for the control, wherein at least two devices (1, 1') for outputting adhesion improving agent provided on the rail vehicle (S) are connected to a data transmission unit (7) and exchange operating and control parameters, and a maximum output rate of adhesion improving agent is determined for each of the at least two devices (1, 1') for outputting adhesion improving agent, And if the calculation unit (6, 6') determines that the calculated adhesion promoter output rate for the corresponding device (1, 1') for outputting adhesion promoter is higher than the maximum output rate of the adhesion promoter, the deviation between the calculated adhesion promoter output rate and the maximum output rate of the adhesion promoter is transmitted to another calculation unit (6', 6) via the data transmission unit (7), so that the other calculation unit correspondingly supplements the deviation of the adhesion promoter output rate determined by the calculation unit (6', 6) for the corresponding other device for outputting adhesion promoter, as long as the maximum output rate of the adhesion promoter of the corresponding other device for outputting adhesion promoter is not exceeded.

6. The method according to claim 5, wherein: In step d), at least one further ratio determined in step c) for one or more wheels (R1, . . . , Rn) is additionally used for controlling the delivery of adhesion promoter by the device (1) for delivering adhesion promoter.

7. The method according to claim 5, wherein: For a certain number n of wheels (R1, . . . , Rn), a device (1) for delivering a adhesion promoter is provided.

8. The method according to any one of claims 5 to 7, wherein: In order to control the output of adhesion promoter by the device (1, 1') for outputting adhesion promoter, an upper limit value and / or a lower limit value (Go, Gu) can be predefined. When the upper limit value is exceeded and / or the lower limit value is fallen below, the output of adhesion promoter via the device (1, 1') for outputting adhesion promoter can be increased or decreased.

9. The method according to claim 5, wherein: Furthermore, the current actual output of adhesion promoter of the device (1) for outputting adhesion promoter is measured by a third measuring device (3) for measuring the output of adhesion promoter.

10. The method according to claim 5, characterized in that The data transmission unit (7) is a data bus.

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