Title:
TIRE STATE DETECTION DEVICE
Document Type and Number:
WIPO Patent Application WO/2015/141152
Kind Code:
A1
Abstract:
A tire-side device (1) transmits data indicating a tire (3) ground-contact time, and a vehicle-side device (2) receives the data and computes the tire (3) ground-contact time to thereby compute a tire (3) ground-contact length at the time. In a situation where the tire air pressure may be changed, such as when replacing the tire, the ground-contact length at that time is considered a reference ground-contact length, and a determination reference value is set on the basis of the reference ground-contact length. Thus, a relative determination reference value corresponding to the tire type can be set, whereby variation in a tire air pressure decrease rate can be reduced when it is determined that the tire air pressure has decreased. In this way, a decrease in tire air pressure can be accurately detected regardless of the tire type.
Inventors:
SUZUKI YOUICHIROU (JP)
TAKAOKA AKIRA (JP)
SAITOU TAKASHI (JP)
WATABE NOBUYA (JP)
MORI MASASHI (JP)
SEKIZAWA TAKATOSHI (JP)
TAKAOKA AKIRA (JP)
SAITOU TAKASHI (JP)
WATABE NOBUYA (JP)
MORI MASASHI (JP)
SEKIZAWA TAKATOSHI (JP)
Application Number:
PCT/JP2015/001004
Publication Date:
September 24, 2015
Filing Date:
February 26, 2015
Export Citation:
Assignee:
DENSO CORP (JP)
International Classes:
B60C23/04; B60C23/06; G01L17/00
Foreign References:
| JP2003065871A | 2003-03-05 | |||
| JP2005178634A | 2005-07-07 | |||
| JP2008110653A | 2008-05-15 |
Attorney, Agent or Firm:
KIN, Junhi (JP)
Gold Junki (JP)
Gold Junki (JP)
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