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Means for detecting loss of pneumatic pressure in tire and device for the purpose

一种轮胎、胎压的技术，应用在测量装置、轮胎测量、轮胎零部件等方向，能够解决无法知道异种的轮胎等问题

Inactive Publication Date: 2006-09-20
SUMITOMO RUBBER IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] In the past, it has been possible to distinguish whether the tire is damaged or whether the currently installed tire is a winter tire or a summer tire. However, when the left and right drive wheels of the vehicle are equipped with different tires, it is impossible to know whether they are different tires.

Method used

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  • Means for detecting loss of pneumatic pressure in tire and device for the purpose
  • Means for detecting loss of pneumatic pressure in tire and device for the purpose
  • Means for detecting loss of pneumatic pressure in tire and device for the purpose

Examples

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example

[0075] In this example, SP9000 (summer tyres) manufactured by Dunlop Falken Tire Co., Ltd. and ContiTS700 (winter tyres) manufactured by Continental, both having a size of 205 / 60R16 summer tires and winter tires mounted on a Mercedes-Benz E-series FR manufactured by Daimler Chrysler (front-engine rear-wheel drive) car. In this example, the test is carried out by two drivers on normal road conditions with normal tire pressure. As for different types of tires, summer tires and winter tires of the same size are installed on the left and right wheels respectively.

[0076] Figure 4 Shown is driving data with the same type of tires (summer tyres) installed, Figure 5 Shown is driving data with a different type of tire mounted.

[0077] In this example, the speed range is divided into 6 levels, which are compared with the speed range 2 and above (2+1+1 detection threshold) and compared with the speed range less than 2 (2+1+1 detection threshold). Threshold 2) Set the threshold....

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Abstract

An object of the present invention is to provide a device for detecting as to whether or not the heterogeneous tires are set on the right and left wheels, respectively, and accurately detecting the loss of the pneumatic pressure in the tire, even when heterogeneous tires are set on the right and the left wheels, respectively. This is a method for detecting as to whether or not the kinds of the tires set on a vehicle are different based on the rotational velocity of the wheels set on the vehicle, so that, when the pneumatic pressure of the tire set on said vehicle is normal, the velocity ratios of the right and left front wheels or the velocity ratios of the right and left rear wheels are obtained by each velocity region of the vehicle as described above, and comparison is made between the wheel velocity ratios of the right and left front wheels by each velocity region or between the wheel velocity ratios of the right and left rear wheels by each velocity region, thereby detecting that the heterogeneous tires are set between the right and left sides. Furthermore, the method for detecting loss of the pneumatic pressures of tires according to the present invention is designed to modify the threshold value for judging loss of the pneumatic pressures of the tires based on the results detected by the method for detecting the heterogeneous tires as described above.

Description

technical field [0001] The invention relates to a device and method for detecting the loss of tire pressure of a tire installed on a vehicle. In particular, the present invention relates to an apparatus and method for correctly detecting tire pressure loss by detecting different types of tires installed on a vehicle. Background technique [0002] Fuel consumption increases when the tires installed on a vehicle are under-inflated, and there is a danger of blowouts when driving at high speeds. In general, the loss of tire pressure is detected by utilizing changes in tire characteristics such as a decrease in the dynamic load radius of the tire or a change in resonance frequency due to pressure loss. [0003] For example, conventional devices for detecting tire pressure loss utilize the principle that when a given tire of a vehicle exhibits pressure loss, the outer diameter of the tire (the dynamic load radius of the tire) is greater than the normal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60C23/00B60C23/02B60C23/06G01L17/00
CPCB60C23/061
Inventor 尾白祐司
Owner SUMITOMO RUBBER IND LTD
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