Title:
Inflation pressure monitoring device
Document Type and Number:
Japanese Patent JP6252579
Kind Code:
B2
Abstract:
A warning control unit of this tire air pressure monitoring device starts giving a driver a tire air pressure fall warning when a tire air pressure is equal to or lower than a first threshold. The warning control unit stops the warning when the tire air pressure becomes equal to or higher than a second threshold that is set based on a tire temperature in a case where the warning is being given. The warning control unit uses a constant value unrelated to a detected tire temperature as the first threshold, and uses a value obtained by adding a variable value, which is obtained by adding a positive constant value to a value that increases as a temperature difference obtained by subtracting a tire temperature at the time of the issuance of the warning from a current tire temperature increases, to the first threshold, as the second threshold.
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Inventors:
Yuji Taki
Application Number:
JP2015220204A
Publication Date:
December 27, 2017
Filing Date:
November 10, 2015
Export Citation:
Assignee:
TOYOTA JIDOSHA KABUSHIKI KAISHA
International Classes:
B60C23/04; B60C23/02; B60C23/20; G01L17/00
Domestic Patent References:
| JP2010254018A | ||||
| JP2014065352A | ||||
| JP2015096339A |
Attorney, Agent or Firm:
Patent business corporation Prospec patent office