Title:
A necessity determining device for exchange of a snap in valve
Document Type and Number:
Japanese Patent JP6281715
Kind Code:
B2
Abstract:
Provided is a replacement necessity determination device for a snap-in valve having an inner end to which an air pressure detection device including an air pressure sensor and an acceleration sensor is coupled. A control device of the replacement necessity determination device is configured to predict an angle change amount of the snap-in valve and the air pressure detection device with respect to a wheel caused by a centrifugal force based on a rotational speed of the wheel and an acceleration detected by the acceleration sensor, calculate a degradation indication value of an elastic body of the snap-in valve based on a maximum value of the angle change amount during a period set in advance, and determine necessity of replacement of the snap-in valve based on an integrated value of the degradation indication value.
Inventors:
Yuji Taki
Application Number:
JP2016033128A
Publication Date:
February 21, 2018
Filing Date:
February 24, 2016
Export Citation:
Assignee:
TOYOTA JIDOSHA KABUSHIKI KAISHA
International Classes:
B60C29/02; B60C23/04
Domestic Patent References:
| JP2005170224A | ||||
| JP2008149967A |
Foreign References:
| US20130304416 |
Attorney, Agent or Firm:
Patent business corporation Prospec patent office
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