Title:
タイヤの減圧の検出装置
Document Type and Number:
Japanese Patent JP6863101
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a detection device which can cancel an affection of slip of a tire, and correctly detect pressure reduction of a tire.SOLUTION: A detection device comprises: a storage part; an index value calculation part; a torque acquisition part; and a pressure reduction detection part. The storage part stores a prescribed reference wheel torque at which, no slip occurs, or slip hardly occurs. The index value calculation part calculates a pressure reduction index value from wheel speed information in detection of pressure reduction. The pressure reduction index value becomes larger as rotation speeds of first and fourth tires are larger, and becomes smaller as rotation speeds of second and third tires are larger, or the pressure reduction index value becomes larger as rotation speeds of the second and third tires are larger, and becomes smaller as rotation speeds of the first and fourth tires are larger. The torque acquisition part acquires a wheel torque in detection of pressure reduction. The pressure reduction detection part identifies a linear relation between the wheel torque in detection of pressure reduction, and the pressure reduction index value, and detects pressure reduction of the tire, based on the linear relation and the reference wheel torque.SELECTED DRAWING: Figure 6
Inventors:
Yusuke Maeda
Kenshita Yamashita
Kenshita Yamashita
Application Number:
JP2017110998A
Publication Date:
April 21, 2021
Filing Date:
June 05, 2017
Export Citation:
Assignee:
Sumitomo Rubber Industries, Ltd.
International Classes:
G01L17/00; B60C23/06
Domestic Patent References:
| JP2010169442A | ||||
| JP2010149837A | ||||
| JP2009227034A |
Foreign References:
| US5561415 |
Attorney, Agent or Firm:
Tachibana Kenji
Yamashita Unknown
Tsuyoshi Masuda
Yamashita Unknown
Tsuyoshi Masuda