VEHICLE BRAKE DEVICE
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United States of America Patent
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app pub date -
Jan 29, 2016
filing date -
Feb 20, 2015
priority date (Note) -
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Abstract
Provided is a brake device capable of detecting abnormality condition of a subject valve without using a wheel pressure sensor and the vehicle brake device includes a valve which is configured to open and close a fluid passage connected to the master chamber and at the same time which is a subject valve for a subject of failure judgement and an abnormality judging portion which is configured to judge whether or not the subject valve is in an abnormal state based on an advancement amount of the master piston accompanying an opening of the subject valve.
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