Method and device for testing the functional reliability of parts subject to wear and/or functional parts of a disc brake

• US 20050236234A1
• Filed: 03/13/2003
• Published: 10/27/2005
• Est. Priority Date: 03/16/2002
• Status: Abandoned Application

• Current Assignee: Knorr-Bremse Systeme Fur Nutzfahrzeuge GMBH (Estate of Heinz Hermann Thiele)
• Original Assignee: Knorr-Bremse Systeme Fur Nutzfahrzeuge GMBH (Estate of Heinz Hermann Thiele)
• Inventors: Ertl, Willi, Macke, Wlodzimierz
• Application Number:
  US10/507,634
• Publication Number:
  US 20050236234A1
• Time in Patent Office: Days
• US Class Current: 188/1.11R
• CPC Class Codes: B60T 17/221 Procedure or apparatus for checking or keeping in a correct functioning condition of brake systems hydraulic pressure systems in general F15B19/00, F15B21/04; testing structures or apparatus G01M
• CPC Class Codes: F16D 66/00 Arrangements for monitoring working conditions, e.g. wear, temperature
• CPC Class Codes: F16D 66/021 using electrical detection or indication means
• CPC Class Codes: F16D 66/026 indicating different degrees of lining wear

Abstract

The invention relates to a method for testing the functional reliability of parts subject to wear and/or functional parts, whose position can change, or components thereof in a pneumatic or electromechanically actuated disc brake, in particular for a commercial vehicle. According to said method, reflectable signals are emitted by a transmitter to the functional part that is to be tested, the reflected signals are received by the receiver and the actual and desired values are compared and evaluated.

Claims

1-15. -15. (canceled)

16. A method for testing functional reliability of pneumatically or electromechanically operable disc brake parts, which parts are at least one of subject to wear and functional, and whose position is changeable, the method comprising the acts of:

transmitting reflectable signals from a transmitter to the disc brake part to be tested;

receiving reflected signals from the part to be tested by a receiver;

comparing determined actual values based on the received reflected signals with predefined values; and

analyzing results of the comparison as part of the testing.

17. The method according to claim 16, wherein ultrasonic signals are transmitted and received.

18. The method according to claim 16, wherein laser beam signals are transmitted and received.

19. The method according to claim 16, wherein the reflected signals are those reflected by surfaces of the disc brake part which bound partition gaps and are at least one of subject to wear and functional.

20. The method according to claim 16, wherein the acts of transmitting and receiving further comprise the acts of transmitting the reflectable signals onto a bridge of a brake application device and receiving reflected signals from the bridge of the brake application device.

21. The method according to claim 16, wherein the method determines an amount of wear of brake pads that form the disc brake parts subject to wear.

22. The method according to claim 16, wherein the method determines wear of a brake disc that forms a disc brake part subject to wear.

23. A system for testing functional reliability of pneumatically or electromechanically operable disc brake parts, which parts are at least one of subject to wear and functional, and whose position is changeable, the system comprising:

a transmitter that emits the reflectable signals;

a receiver that receives the reflected signals; and

wherein the transmitter and receiver are arranged on one of a disc brake and a component adjacent to the disc brake, said transmitter and receiver being operatively coupled with an electronic analyzing system.

24. The system according to claim 23, wherein at least one of the transmitter and the receiver are arranged stationarily with respect to the disc brake parts.

25. The system according to claim 23, wherein at least one of the transmitter and the receiver are arranged on components of the disc brake whose position is changeable.

26. The system according to claim 23, wherein the transmitter is an ultrasonic transmitter and the receiver is an ultrasonic receiver.

27. The system according to claim 23, wherein the transmitter is a laser transmitter and the receiver is a laser receiver.

28. The system according to claim 23, wherein the transmitter and the receiver are combined into a functional transmitter/receiver unit.

29. The system according to claim 28, further comprising a casing in which the functional transmitter/receiver unit is housed.

30. The system according to claim 29, wherein the casing has a telescopic construction.