Title:
ESTIMATION METHOD OF ROAD SURFACE FRICTION COEFFICIENT, DEVICE THEREFOR, AND PNEUMATIC TIRE
Document Type and Number:
Japanese Patent JP2002036836
Kind Code:
A
Abstract:
To provide a method capable of accurately estimating a road surface friction coefficient and a pneumatic tire capable of presuming the road surface friction coefficient even in a state such that a brake force is not applied to a tire.
A first sensing block 4H having a higher height than a surface of a tread 2 and a second sensing block 4L having a lower height than that are provided in a tread groove part 3 of a tire tread 2. Distortion gauges 5H, 5L are adhered to the first and second sensing blocks 4H, 4L and distortion levels of the two kinds of blocks 4H, 4L are measured. A road surface friction coefficient is presumed from a difference of the distortion levels.
Inventors:
YOKOTA HIDETOSHI
MORINAGA HIROSHI
OTANI KOJI
MORINAGA HIROSHI
OTANI KOJI
Application Number:
JP2000221082A
Publication Date:
February 06, 2002
Filing Date:
July 21, 2000
Export Citation:
Assignee:
BRIDGESTONE CORP
International Classes:
G01L5/00; B60C19/00; B60T8/172; B60T8/1763; B60T8/58; (IPC1-7): B60C19/00; B60T8/58; G01L5/00
Domestic Patent References:
| JPH09193627A | 1997-07-29 | |||
| JPH03220056A | 1991-09-27 | |||
| JPH08324414A | 1996-12-10 | |||
| JPH10506346A | 1998-06-23 | |||
| JP2002002472A | 2002-01-09 | |||
| JPH04503790A | 1992-07-09 | |||
| JP2002082004A | 2002-03-22 |
Foreign References:
| US5864056A | 1999-01-26 |
Attorney, Agent or Firm:
Miyazono Junichi
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