Rail vehicle braking system and method for operating a rail vehicle braking system

Patent metadata

Field	Value
Publication number	US-10899326-B2
Application number	US-201615739563-A
Country	US
Kind code	B2
Filing date	Jun 27, 2016
Priority date	Jun 25, 2015
Publication date	Jan 26, 2021
Grant date	Jan 26, 2021

Abstract

A rail vehicle braking system includes at least one disk brake associated with a wheel or a wheel set, wherein the disk brake includes at least one brake disk, at least one brake lining which engages with the brake disk, at least one application device exerting an application force on the at least one brake lining during a braking operation, and a control device for controlling the application device, wherein the control device is coupled to a determination unit for determining a current wheel diameter of the wheel or of the wheel set, wherein the control unit is configured such that, when a predetermined application force is actuated during braking operation, a value of the current wheel diameter detected by the determination unit is taken into account.

First claim

The invention claimed is:

1. A rail vehicle brake system comprising:
at least one disk brake which is assigned to a wheel of a wheel set, wherein the at least one disk brake interacts with at least one brake lining;
at least one brake application device, which applies a brake application force to the at least one brake lining during a braking process; and
a control device for controlling the brake application device,
wherein the control device is coupled to a determination unit of a plurality of determination units for determining a current wheel diameter of each wheel of the wheel set
wherein the control device is configured to take into account a value of the current wheel diameter detected by the determination unit when a predetermined brake application force is actuated during the braking process, and
wherein each wheel in the rail brake system has a corresponding determination unit of the plurality of determination units, and each determination unit has at least one sensor device, and wherein each corresponding determination unit is automatically activated at predetermined temporal intervals, distance intervals, or number of braking processes and automatically transmits the current wheel diameter to the control device.

2. The rail vehicle of claim 1 wherein the determination unit has an evaluation unit.

3. The rail vehicle brake system of claim 1 , wherein the sensor device has a sensor which measures the wheel diameter.

4. The rail vehicle brake system of claim 1 , wherein the sensor device has a sensor which measures the current wheel rotational speed.

5. The rail vehicle brake system of claim 1 , wherein the determination unit is an integral, stand-alone component of the control device or as a separate functional unit.

6. A method for operating a rail vehicle brake system that includes at least one disk brake assigned to a wheel or to a wheel set, wherein the at least one disk brake interacts with at least one brake lining, at least one brake application device, which applies a brake application force to the at least one brake lining during a braking process, and a control device for controlling the brake application device, wherein the control device is coupled to a determination unit for determining a current wheel diameter of the wheel or of the wheel set, the method comprising:
activating the determination unit to determine the current wheel diameter of the wheel of the wheel set;
determining the current wheel diameter of the wheel of the wheel set;
transmitting the current wheel diameter of the wheel of the wheel set to the control device; and
actuating the brake application device of the rail vehicle brake system by the control device taking into account the current wheel diameter of the wheel of the wheel set,
wherein the actuation of the brake application device is controlled to prevent locking of the wheel on a rail track such that a braking force which acts at a wheel contact point of the wheel on the rail track does not exceed a predetermined maximum value,
wherein each wheel in the rail vehicle brake system has a corresponding determination unit, and each determination unit has at least one sensor device, and the determination unit is automatically activated at predetermined temporal intervals, distance intervals, or number of braking processes and automatically transmits the current wheel diameter to the control device.

7. The method of claim 6 , wherein the determination of the current wheel diameter of the wheel or of the wheel set is carried out by measuring the wheel diameter of the wheel or of the wheel set.

8. The method of claim 6 , wherein the the determination of the current wheel diameter of the wheel or of the wheel set is carried out by measuring the wheel rotational speed of the wheel or of the wheel set and subsequently calculating the wheel diameter from the measured wheel rotational speed and the speed of the wheel relative to a rail track on which the wheel is positioned.

Assignees

• Knorr Bremse Systeme

Inventors

• Elstorpff Marc-Gregory
• Mosbach Christian
• Grunwald Torsten

Classifications

• B60T13/665 Primary

  the systems being specially adapted for transferring two or more command signals, e.g. railway systems (B60T13/662 takes precedence) · CPC title

• B60T2240/07

  Tyre tolerance compensation · CPC title

• B60T17/228

  for railway vehicles · CPC title

• B61H5/00

  Applications or arrangements of brakes with substantially radial braking surfaces pressed together in axial direction, e.g. disc brakes · CPC title

• B61H13/20

  Transmitting mechanisms · CPC title