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Method and device for precisely testing rolling resistance of tyres

A technology of rolling resistance and testing method, which is applied in the direction of automobile tire testing, etc., can solve the problems of installation error, difficult quantitative description, and harsh environment of component force sensor, and achieve the effect of eliminating error and improving test accuracy

Active Publication Date: 2014-04-30
JILIN UNIV
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  • Application Information

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Problems solved by technology

At present, the method of linear decoupling is commonly used to reduce the coupling between dimensions, but the research shows that the coupling is nonlinear, and the linear decoupling cannot completely eliminate the coupling error that exists in practice, and because the calibration is measured in a specific good environment, However, the component force sensor on the tire test bench is used in a harsh environment, and the coupling coefficient of the sensor will be different.
Furthermore, when installing a multi-component force sensor on a tire test bench, the installation error (such as the sensor is tilted at an angle) will also have a certain impact on the inter-dimensional coupling coefficient
The undetermined factors in the above actual experiments make the inter-dimensional coupling relationship of the sensor more complicated, and it is difficult to describe quantitatively in theory

Method used

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  • Method and device for precisely testing rolling resistance of tyres
  • Method and device for precisely testing rolling resistance of tyres
  • Method and device for precisely testing rolling resistance of tyres

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Embodiment

[0071] The stable output pressure of the air source is 10MPa, and the precision of the pressure controller: 0.01MPa.

[0072] The vertical load F required by a tire test Z0 is 4000N, select 16 vent holes covered by the suspension pallet, and the radius of the vent hole is 8mm, then the total area of ​​the vent holes covered by the suspension pallet is S 托板出气 =16×πr 2 =32.15cm 2

[0073] to hold up F Z0 = Vertical load of 4000N, according to the total area S of air outlet holes under the suspension pallet 托板出气 and sub-high pressure gas pressure p 2 And the tire vertical load F required by the test Z0 Relationship exists between: S 托板出气 ·p 2 >F z0 , then there is p 2 >1.24MPa, therefore, it is necessary to adjust the pressure controller so that the air pressure of the sub-high pressure air duct meets p 2 >1.24MPa.

[0074] The steps of the precise measurement method for tire rolling resistance are as follows:

[0075] Step 1: Set the sensitivity of each output force...

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Abstract

The invention discloses a method and device for precisely testing rolling resistance of tyres and belongs to the field of tyre kinetic characteristic testing tests. By means of the method and device, the problem that an existing tyre testing machine with a multi-component-force sensor installed can not precisely measure tyre rolling resistance. The method for testing the tyre rolling resistance includes the steps that the state of a tyre in the state that the longitudinal force is zero is set according to a side inclining angle and vertical load required for testing, zero clearing processing is carried out on each force output channel of the tyre multi-component-force sensor, and datum points for testing the tyre rolling resistance are accordingly chosen so as to test the rolling resistance; in this way, the crosstalk of the vertical load on the rolling resistance can be eliminated, and the purpose of precisely testing the tyre rolling resistance is achieved. It can be achieved by the testing device that the tyre is in the state that the longitudinal force is zero. The method and device can be widely applied to tyre characteristic test tables with multi-component-force sensors installed and is suitable for precisely testing rolling resistance of all kinds of tyres.

Description

technical field [0001] The invention belongs to the test field of tire dynamic characteristics, and in particular relates to a method and device for accurately testing tire rolling resistance, which can accurately measure the rolling resistance of tires by eliminating the coupling crosstalk between vertical loads and rolling resistance, and provide tire dynamic research. More accurate test data. Background technique [0002] Tires are an important part of the car, and the force between the vehicle and the ground is transmitted through the tires. The mechanical characteristics of tires are the basis of automobile performance analysis and design, and have an important impact on automobile safety, operating stability, ride comfort and other performances. The tire mechanical characteristic test bench is one of the key equipment for tire characteristic modeling and vehicle modeling, integration, adjustment and development. It is the key data source for vehicle dynamics simulati...

Claims

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Application Information

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IPC IPC(8): G01M17/02
Inventor 卢荡刘兵吴海东
Owner JILIN UNIV
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