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Device and method for evaluating rolling resistance of tire

A technology for evaluating device and rolling resistance, which can be used in tire measurement, measurement device, tire parts, etc., and can solve problems such as abnormal tire rolling resistance

Inactive Publication Date: 2018-12-21
KOBE STEEL LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In Patent Document 1, the phase difference is derived in advance using a reference tire, and when the difference between the phase difference of the reference tire and the phase difference of the tire to be evaluated is greater than the allowable range, the rolling resistance of the tire to be evaluated is evaluated. Abnormal

Method used

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  • Device and method for evaluating rolling resistance of tire
  • Device and method for evaluating rolling resistance of tire
  • Device and method for evaluating rolling resistance of tire

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Embodiment Construction

[0049] An evaluation device (hereinafter simply referred to as "evaluation device") 1 of tire rolling resistance according to an embodiment of the present invention is a tire uniformity test (JIS D4233) for inspecting the uniformity of the tire in the circumferential direction. Uniformity testing machine (TUM: Tire Uniformity Machine), such as Figure 1 ~ Figure 3 As shown, there are: a base 1b; a tire shaft 2x; a tire rotation motor 2M for rotating the tire shaft 2x and the tire 2 supported on the tire shaft 2x (refer to image 3 . exist figure 1 and figure 2 Not shown in the figure); drum 3; used to make the drum 3 along figure 1 and figure 2 The roller movement motor 3M that moves in the direction of the arrow (refer to image 3 . exist figure 1 and figure 2 not shown in the figure); the load sensor 5 for detecting the load applied to the tire 2; the load sensor 5 for detecting the roller 3 figure 1 and figure 2 The position sensor 6 of the position on the arr...

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Abstract

The present invention makes it possible for the rolling resistance of a tire to be evaluated appropriately and easily at an arbitrarily defined temperature. When deriving a phase difference (phase difference between a load applied to a tire and a variation in the position of a drum) for a reference tire, while the temperature of the reference tire, which has been heated or cooled to an initial temperature higher or lower than the atmospheric temperature, transitions from the initial temperature toward the atmospheric temperature, a phase difference [delta] is derived at a plurality of temperatures in a range between the initial temperature and the atmospheric temperature (S2 - S7 - S9: YES - S7 etc.). The rolling resistance of a tire being evaluated is then evaluated by comparing the phasedifference corresponding to the temperature of the tire being evaluated, from among the phase differences [delta] derived for the reference tire at the plurality of temperatures, with the phase difference derived for the tire being evaluated.

Description

technical field [0001] The present invention relates to an evaluation device and evaluation method of tire rolling resistance. Background technique [0002] As one of important evaluation items related to the performance of tires used for vehicles (trucks, passenger vehicles, etc.), there is rolling resistance. Rolling resistance is a tangential force generated between the tire and the road surface when the tire runs on the road surface, and the measurement method is specified in JIS D 4234 (Tires for Passenger Cars, Trucks, and Buses - Rolling Resistance Test Method, 2009). [0003] In the measurement method specified in JIS D 4234, in order to stabilize the temperature of the tire before the measurement, it is necessary to perform a warm-up operation for 30 minutes or more, and the measurement takes time. In contrast, Patent Document 1 proposes a proposal of estimating the rolling resistance using a characteristic value correlated with the rolling resistance instead of me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M17/02B60C19/00
CPCB60C19/00G01M17/02G01M17/022B60C23/0486
Inventor 冈田彻
Owner KOBE STEEL LTD