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Auto shop service equipment with means for determining the coefficient of rolling resistance of tires

A technology of rolling resistance coefficient and service equipment, applied in tire installation, measuring device, tire parts, etc., to achieve reliable and accurate rolling resistance coefficient, accurate rolling resistance coefficient, and eliminate parasitic effects

Active Publication Date: 2018-03-23
SNAP ON EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Fuel efficiency ratings for tires are determined by large and expensive testing facilities in specialized laboratories

Method used

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  • Auto shop service equipment with means for determining the coefficient of rolling resistance of tires
  • Auto shop service equipment with means for determining the coefficient of rolling resistance of tires
  • Auto shop service equipment with means for determining the coefficient of rolling resistance of tires

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Embodiment Construction

[0038] It should be noted that the drawings are not truly to scale, but merely illustrate the principles of the invention. In other words, the distances, dimensions and ratios of the components depicted in the figures may vary within the spirit of the present invention. Furthermore, in the description of the following preferred embodiments of the present invention, the terms left, right, top, bottom, etc. in relation to the drawings should be interpreted as the directions in which the reference numerals in the drawings can be read. These terms should not be related to any position or orientation relative to the overall device in a limiting manner, but are merely provided to facilitate an understanding of the present invention.

[0039] First explain about Figure 10 The physics of how tires roll on flat surfaces such as road surfaces. When a normal tire rolls on a flat, hard surface such as a road, due to the deformation of the tire at the contact portion (tire / road interfac...

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PUM

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Abstract

A vehicle wheel service apparatus, in particular a wheel balancer or a tyre changer, comprising a load means (26, 126) for applying a predetermined load onto a peripheral surface of a wheel / tyre assembly (14), a sensor device (30) arranged to determine forces acting between the peripheral surface of the wheel / tyre assembly (14) and the load means (26, 126), wherein the forces comprise at least a first force acting in a radial direction of the wheel / tyre assembly (14) and a second force acting in a circumferential direction of the wheel / tyre assembly (14), and an evaluation device arranged to determine a rolling resistance coefficient of the tyre (10) on the basis of the first and second forces.

Description

technical field [0001] The present invention relates to the field of auto shop service machines, such as wheel balancers, tire changers, roller test stands, etc., and in particular to a vehicle having a device for determining the coefficient of rolling resistance of motor vehicle tires or wheels (tire / rim assemblies) Auto shop service machine. Background technique [0002] A tire changer and a method for mounting and / or removing tires from the rim of a vehicle wheel are known from patent EP2110270A1. The tire changer includes at least one installation and / or removal tool movably attached to the strut. The at least one installation and / or removal tool can be positioned in such a way that the tire can be installed on or removed from the rim without damaging the rim. [0003] It is also known from patent WO 2011 / 101006 A1 to provide a tyre changer with a loading roller for measuring radial and / or lateral forces acting between the tyre and the loading roller which exerts a con...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M17/02B60C25/132
CPCG01M17/022B60C25/138
Inventor F·布拉格希罗利M·特拉里
Owner SNAP ON EQUIP
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