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Method for monitoring a brake and brake monitored by this method

A technology of brakes and brake discs, applied in the direction of brakes, brake types, brake components, etc., can solve the problems that the brakes cannot always provide reliable results, and achieve the effect of avoiding fault reports

Active Publication Date: 2018-04-06
WABCO EURO BVBA SPRL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The monitoring method for brakes mentioned at the outset and known from EP 2 520 817 A1 does not always provide reliable results

Method used

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  • Method for monitoring a brake and brake monitored by this method
  • Method for monitoring a brake and brake monitored by this method
  • Method for monitoring a brake and brake monitored by this method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0044] according to figure 1 and 2 The graphs of , respectively, show the maximum lever travel for disc brakes at different temperatures or at different speeds as a function of brake pressure. It shows that the individual maximum lever distances, brake pressure, temperature and speed are interrelated or dependent on each other. Rod path is a measure for clearance.

[0045] as can especially be obtained from figure 1 At a brake pressure of 10bar and a speed of 40km / h, the maximum lever travel

[0046] 61mm at a temperature of 100°C,

[0047] 60mm at a temperature of 300°C, and

[0048] It is 57.5mm at a temperature of 500°C.

[0049] according to figure 2 , when the brake pressure is 10bar and the temperature is 500℃, the maximum rod travel

[0050] 58mm at a speed of 40km / h,

[0051] 64mm at a speed of 80km / h, and

[0052] It is 64.5mm at a speed of 120km / h.

[0053] The temperatures are each the temperature of one of the participating brake linings. Since the bra...

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PUM

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Abstract

The invention relates to a method for monitoring a brake, wherein the play of the brake (10) is measured and a malfunction is concluded when the play of the brake falls below a lower limit value or exceeds an upper limit value. According to the invention it is provided that the lower limit value and / or the upper limit value are variable, that is to say dependent on at least one current or previous operating state variable which has an influence on the air gap. Furthermore, the invention relates to a brake, in particular for a commercial vehicle, which is monitored with the described method.

Description

technical field [0001] The invention relates to a method for monitoring a brake, wherein the play of the brake is measured and a fault is concluded if the play of the brake falls below a lower limit value or exceeds an upper limit value. Background technique [0002] Such a method is known, for example, from EP 2 520 817 A1. As a result, a warning display is triggered not only when the setpoint air gap is exceeded but also when it is undershot. Brake signals and brake pressure signals are supplied to a controller provided in the known brake for detecting the operating state of the brake system. These signals are only taken into account for the purpose of ascertaining the operating state, ie whether the brake is engaged or released. [0003] DE 42 12 407 A1 discloses a play detector for a compressed-air operated disc brake, in which a rotational angle sensor is used to measure the play. According to WO 2010 / 005379 A1, the play is determined from the lever travel and the pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16D66/02B60T17/22
CPCB60T8/885B60T2270/406B60T17/22F16D66/026F16D2066/001F16D2066/003F16D2066/006
Inventor 保罗·安东尼
Owner WABCO EURO BVBA SPRL
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