Monitor for brake actuator pressure and method for monitoring brake actuator pressure

Patent metadata

Field	Value
Publication number	US-9352736-B2
Application number	US-201314383445-A
Country	US
Kind code	B2
Filing date	Mar 8, 2013
Priority date	Mar 9, 2012
Publication date	May 31, 2016
Grant date	May 31, 2016

Abstract

A monitor for a brake apparatus of a railway vehicle, wherein the brake apparatus has at least one pressure-actuated brake actuator, upstream of which a control valve device is provided. The monitor performs an estimation of the actuator pressure applied at the brake actuator on the basis of pressure data and actuation data, the pressure data represents at least one pressure present upstream of the control valve device and the actuation data represents an actuation of the control valve device. Further disclosed is a corresponding brake apparatus for a railway vehicle, a railway vehicle and a method for estimating an actuator pressure.

First claim

The invention claimed is:

1. A monitor for a brake device of a railway vehicle, wherein the brake device comprises at least one pressure-actuated brake actuator, from which a control valve device is connected upstream, wherein the monitor receives pressure data and activation data estimates the actuator pressure applied to the brake actuator based on the pressure data and activation data, wherein the pressure data represent at least one pressure present upstream of the control valve device and the activation data represent an activation of the control valve device.

2. The monitor of claim 1 , wherein the control valve device is a valve device of a wheel slide protection device.

3. The monitor of claim 1 , wherein the brake device is a pneumatic or hydraulic brake device.

4. The monitor of claim 1 , wherein the pressure data represent a pilot control pressure.

5. The monitor of claim 1 , wherein the pressure data represent an input pressure applied to an input of the control valve device.

6. The monitor of claim 1 , wherein the activation data represent signals for activating the control valve device.

7. The monitor of claim 1 , wherein the monitor is implemented as part of a control device, that activates the brake device based on the estimation of the actuator pressure applied to the brake actuator.

8. A brake device for a railway vehicle having a monitor as claimed in claim 1 .

9. A railway vehicle having a brake device as claimed in claim 8 .

10. A method for estimating an actuator pressure applied to a pressure-actuated brake actuator of a brake device of a railway vehicle, the method comprising:
registration, by a monitor, of pressure data, which represent at least one pressure present upstream of a control valve device of the brake device, wherein the control valve device is connected upstream of the brake actuator;
registration, by the monitor, of activation data, which represent an activation of the control valve device; and
estimation, by the monitor, of the actuator pressure applied to the brake actuator based on the registered pressure data and the activation data.

Assignees

• Knorr Bremse Systeme Für Schienenfahrzeuge Gmbh
• Knorr Bremse Systeme

Inventors

• Mayer Reinhold

Classifications

• B60T17/228 Primary

  for railway vehicles · CPC title

• B60T13/665

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

• G01L5/28

  for testing brakes · CPC title

• G01M17/08

  Railway vehicles · CPC title