Alarm method for indicating wear of tyre with furrow

A technology of tires and circumferential grooves, applied in tire measurement, tire parts, tire tread/tread pattern, etc., can solve the problem of late tire replacement, achieve the effect of reducing implementation cost and easy processing algorithm

Inactive Publication Date: 2013-11-27
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 wear of tyre with furrow
  • Alarm method for indicating wear of tyre with furrow
  • Alarm method for indicating wear of tyre with furrow

Examples

Experimental program
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Embodiment Construction

[0034] figure 1 A tire according to a first embodiment is shown generally indicated by 10 , comprising a tread strip 12 .

[0035] The tread strip 12 comprises two circumferential grooves 14 positioned near the mid-plane of the tyre.

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

[0037] As the tire tread strip gradually wears, the depth of the circumferential grooves decreases. figure 2 shows the condition in which the tread strip 12 is worn figure 1 tires in. It can be noted that the depth of the circumferential grooves 14 and 15 is less than the depth of the grooves in a new tire. This depth in the worn state is equal to, for example, 2.5 mm.

[0038] image 3The tire 10 is schematically shown running along a ...

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Abstract

In a method for alerting to the wear of a tyre that includes a tread strip equipped with at least one circumferential groove, the running noise made by the tyre running along a ground is measured, from the measured running noise, a noise emitted in a predetermined range of frequencies close to a predetermined resonant frequency of a portion of the circumferential groove during running is isolated, the amplitude of the isolated noise is measured, and the measured amplitude is compared against a predetermined alert threshold.

Description

technical field [0001] The invention relates to the field of motor vehicle tires and how to detect their wear. Background technique [0002] As the tire travels on the ground, its tread strip comes into contact with the ground and wears down through friction. [0003] For obvious safety reasons it is important that grip is present on wet roads (especially in places where standing water is deep where there is a risk of skidding) when the wear of the tire tread strips becomes excessive Replacing the tires will significantly reduce the risk. [0004] To facilitate checking wear and to detect particularly noticeable wear, tires are often equipped with tread wear indicators. [0005] An example of a commonly used tread wear indicator is a rib created in the bottom of a groove in the tread pattern of a tire, the height of which corresponds to the minimum depth of the sipe required for the tire to run correctly and reliably. Therefore, when the tire tread strip has worn away and...

Claims

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Application Information

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Patent Type & Authority Patents(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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