Invention Grant
US07868749B2 Method and apparatus for detecting decrease in tire air pressure and program for determining decrease in tire air pressure
有权
用于检测轮胎气压降低的方法和装置以及用于确定轮胎气压降低的程序
- Patent Title: Method and apparatus for detecting decrease in tire air pressure and program for determining decrease in tire air pressure
- Patent Title (中): 用于检测轮胎气压降低的方法和装置以及用于确定轮胎气压降低的程序
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Application No.: US12408089Application Date: 2009-03-20
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Publication No.: US07868749B2Publication Date: 2011-01-11
- Inventor: Kazuyoshi Miyamoto , Minao Yanase
- Applicant: Kazuyoshi Miyamoto , Minao Yanase
- Applicant Address: JP Kobe-shi
- Assignee: Sumitomo Rubber Industries, Ltd.
- Current Assignee: Sumitomo Rubber Industries, Ltd.
- Current Assignee Address: JP Kobe-shi
- Agency: Birch, Stewart, Kolasch & Birch, LLP
- Priority: JP2008-073418 20080321
- Main IPC: B60C23/00
- IPC: B60C23/00
Abstract:
The method includes: a step of calculating wheel rotation information; a judgment step of judging a decrease in a tire air pressure by comparing a predetermined reference value with a decreased pressure judgment value showing a wheel speed ratio of the front and rear axes; an initialization step of storing the wheel speed ratio between the front and rear axes at the regular internal pressure; and a step of determining whether the distribution of the front and rear driving torque is equidistribution or not.
Public/Granted literature
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