Alarm method for indicating the wear of a tyre with a furrow

A tire and groove technology, applied in tire measurement, tire parts, tire tread/tread pattern, etc., can solve problems such as replacing tires too late, and achieve the effect of reducing implementation costs and easy processing algorithms

Inactive Publication Date: 2011-11-23
MICHELIN & CO CIE GEN DES ESTAB MICHELIN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] One disadvantage of utilizing this type of tread wear indicator is that it requires the driver of the motor vehicle to be vigilant about the section and requires regular visual inspections of the condition of his tires
Currently, many drivers neglect to perform such checks and replace their tires too late, for example when the state of wear of the tires is checked during a mandatory vehicle test in a garage

Method used

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  • Alarm method for indicating the wear of a tyre with a furrow
  • Alarm method for indicating the wear of a tyre with a furrow
  • Alarm method for indicating the wear of a tyre with a furrow

Examples

Experimental program
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Embodiment Construction

[0034] figure 1 The tire denoted by global reference numeral 10 according to the first embodiment is shown, and the tire 10 includes a tread strip 12.

[0035] The tread strip 12 includes two circumferential grooves 14 positioned near the midplane of the tire.

[0036] figure 1 The tire 10 shown in is in a new state, and the depth of the groove 14 in the middle of the tread strip is 8 mm. The tire 10 also includes two circumferential grooves 15, which are located in the shoulders, that is, near the longitudinal edges of the contact area of ​​the tread strip 12.

[0037] As the tire tread strip is gradually worn, the depth of the circumferential groove decreases. figure 2 Shows the state where the tread strip 12 is worn figure 1 In the tires. It can be noted that the depth of the circumferential grooves 14 and 15 is smaller than the depth of the grooves in the new tire. The depth in the worn state is, for example, equal to 2.5 mm.

[0038] image 3 The tire 10 running along the grou...

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PUM

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Abstract

The invention relates to an alarm method pertaining to the wear of a tyre (10) having a tread (12) with at least one circumferential furrow (14), comprising: measuring the rolling noise of the tyre (10) on the ground; isolating, from the measured rolling noise, a noise generated in a predetermined frequency range close to a predetermined resonance frequency of a segment of the circumference furrow (14) upon rolling; measuring the amplitude of the isolated noise; comparing the measured amplitude to a predetermined alarm threshold.

Description

Technical field [0001] The invention relates to the field of motor vehicle tires and how to detect their wear. Background technique [0002] When a tire is running on the ground, its tread strip is in contact with the ground and is worn by friction. [0003] For obvious safety reasons, it is important that the wear of the tire tread strip becomes too large and there is grip on wet roads (especially in places with deep static water (where there is a risk of slipping)) It will significantly reduce the risk of tire replacement before. [0004] In order to facilitate the inspection of wear and to facilitate the detection of particularly obvious wear, tires are usually equipped with tread wear indicators. [0005] An example of a commonly used tread wear indicator is a rib generated in the groove bottom of a tire tread pattern, the height of the rib corresponding to the minimum depth of the tire groove required for the correct and reliable operation of the tire. Therefore, when the tire ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60C11/24B60C23/06
CPCB60C11/24
Inventor A·帕蒂勒
Owner MICHELIN & CO CIE GEN DES ESTAB MICHELIN
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