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Device for measuring a field of pressures exerted by a pneumatic tyre

A pressure field, tire technology, applied in the direction of measuring device, measuring fluid pressure, measuring force, etc., can solve problems such as sensor element damage

Inactive Publication Date: 2018-10-23
MICHELIN & CO CIE GEN DES ESTAB MICHELIN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this case, it is not possible to test the tire under braking, cornering slip (drift) or camber, since this would lead to the destruction of the sensor elements fixed on the protective sheet and thus to the same traction and / or shear force

Method used

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  • Device for measuring a field of pressures exerted by a pneumatic tyre
  • Device for measuring a field of pressures exerted by a pneumatic tyre

Examples

Experimental program
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Embodiment Construction

[0031] will now refer to figure 1 To describe the general structure of a device for measuring the pressure field exerted by a tire in its contact patch with the ground.

[0032] The measuring device 1 comprises a flat support 2 and a measuring sensor 3 arranged on the support 2 .

[0033] The support 2 is usually a measuring table, but can also be the ground.

[0034] The sensor 3 is preferably a piezoresistive sensor or a piezoelectric capacitive sensor.

[0035] More specifically, the sensor 3 has a measuring piece (board) 30 , a connection member 31 allowing a power supply line and a line for connecting the measuring piece and a computer central processing unit 32 to be connected to the connecting member 31 .

[0036] To give an idea of ​​size, the measuring patch 30 preferably has a measuring area of ​​5 centimeters by 5 centimeters (or more).

[0037] The tire P to be tested is installed on the hub M of the test bench B. More specifically, the hub M is mounted so as t...

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Abstract

The invention relates to a measuring device (1) for measuring a field of pressures exerted by a pneumatic tyre in the area of the measuring surface with which it is in contact, comprising a flat support (2) and a measuring sensor (3) for measuring said field of pressures, which is arranged on said support (2). Said device is characterised in that it comprises at least one film (4), a so-called 'protection film' of a thickness of less than 1 mm, made of a material resistant to forces generated in the plane thereof, which are higher than or equal to 1000 N and lower than or equal to 10 000 N, said protection film (4) being arranged on said measuring sensor (3) so as to be contact therewith and immobilised in relation thereto, said protection film (4) being pre-stressed so as to be stretchedover said meausring sensor (3).

Description

technical field [0001] The invention relates to the field of measuring the pressure field exerted by a tire on the ground. [0002] These pressure measurements are key parameters for understanding tire performance, especially in terms of tire wear, grip or rolling resistance, for example, whether these tires are used for passenger cars, heavy-duty vehicles, construction vehicles or two-wheeled vehicles. [0003] The invention relates more particularly to a device for measuring a pressure field exerted by a tire in the region of a measuring surface in contact with it. Background technique [0004] The measuring device known from the prior art comprises a flat support on which a likewise flat sensor for measuring the pressure field is placed, and is preferably a piezoresistive sensor or a piezocapacitive sensor. The tire to be tested is then mounted on the test stand and pressed against the measuring sensor with a force simulating the forces exerted by the tire on the road or...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L17/00G01M17/02G01L1/26
CPCG01L1/26G01M17/021G01L5/162G01L5/165
Inventor T·安苏F·布雷蒙J·阿帕里西奥R·雷纳尔德斯特-米歇尔
Owner MICHELIN & CO CIE GEN DES ESTAB MICHELIN