Tire management method and tire management apparatus detecting temperature of tire at predetermined intervals

Patent metadata

Field	Value
Publication number	US-10661618-B2
Application number	US-201615767399-A
Country	US
Kind code	B2
Filing date	Nov 10, 2016
Priority date	Nov 10, 2015
Publication date	May 26, 2020
Grant date	May 26, 2020

Abstract

The present tire management method includes detecting a temperature at predetermined intervals inside a tire air chamber, converting the temperature detected at predetermined intervals inside the tire air chamber into a first multiplication value of load times speed or a second multiplication value of the square of load times speed, and calculating an accumulation value by accumulating the first or second multiplication value for a predetermined period. The present tire management apparatus includes a temperature detector that detects a temperature at predetermined intervals inside a tire air chamber, a converter that converts the temperature detected by the temperature detector at predetermined intervals inside the tire air chamber into a first multiplication value of load times speed or a second multiplication value of the square of load times speed, and an accumulator that calculates an accumulation value by accumulating the first or second multiplication value for a predetermined period.

First claim

The invention claimed is:

1. A tire management method comprising:
detecting, by a temperature detector, a temperature at predetermined intervals inside a tire air chamber of a pneumatic tire on a vehicle;
converting, by a converter, the temperature detected at predetermined intervals inside the tire air chamber into a first multiplication value being obtained by multiplying load applied to the tire by tire speed or a second multiplication value being obtained by multiplying the square of the load applied to the tire by the tire speed; and
calculating, by an accumulator, an accumulation value by accumulating the first multiplication value or the second multiplication value for a predetermined period.

2. The tire management method of claim 1 , further comprising calculating, by the accumulator, a sum by adding the accumulation value for the predetermined period during the pneumatic tire being used as a front tire and the accumulation value for the predetermined period during the pneumatic tire being used as a rear tire.

3. The tire management method of claim 2 , further comprising determining, by a determination unit, a usage status of the pneumatic tire from the sum based on tire life data prepared in advance.

4. The tire management method of claim 3 , wherein by the determination unit, a predicted failure site of the pneumatic tire is determined based on:
the sum, and
a failure map, prepared in advance, indicating a relationship between the sum and one or more previously determined failure sites.

5. The tire management method of claim 1 , wherein the pneumatic tire comprises a heavy-duty pneumatic tire.

6. A tire management apparatus comprising:
a temperature detector configured to detect a temperature at predetermined intervals inside a tire air chamber of a pneumatic tire on a vehicle;
a converter configured to convert the temperature detected by the temperature detector at predetermined intervals inside the tire air chamber into a first multiplication value being obtained by multiplying load applied to the tire by tire speed or a second multiplication value being obtained by multiplying the square of the load applied to the tire by tire speed; and
an accumulator configured to calculate an accumulation value by accumulating the first multiplication value or the second multiplication value for a predetermined period.

7. The tire management apparatus of claim 6 , wherein the accumulator is configured to calculate a sum by adding the accumulation value for the predetermined period during the pneumatic tire being used as a front tire and the accumulation value for the predetermined period during the pneumatic tire being used as a rear tire.

8. The tire management apparatus of claim 7 , wherein the determination unit is configured to determine a usage status of the pneumatic tire from the sum based on tire life data prepared in advance.

9. The tire management apparatus of claim 8 , wherein the determination unit is configured to determine a predicted failure site of the pneumatic tire based on:
the sum, and
a failure map, prepared in advance, indicating a relationship between the sum and one or more previously determined failure sites.

10. The tire management apparatus of claim 6 , wherein the pneumatic tire comprises a heavy-duty pneumatic tire.

Assignees

• Bridgestone Corp

Inventors

• Kimura Takeshi

Classifications

• B60C23/20 Primary

  Devices for measuring or signalling tyre temperature {only} · CPC title

• B60C2019/004

  Tyre sensors other than for detecting tyre pressure · CPC title

• G01N17/00

  Investigating resistance of materials to the weather, to corrosion, or to light · CPC title

• B60C11/24

  Wear-indicating arrangements · CPC title

• G01M17/02

  Tyres · CPC title