Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
August 30, 2011
Patent Application Number
12172685
Date Filed
July 14, 2008
Patent Primary Examiner
Patent abstract
A control unit 20 includes an initial current value calculation unit 22 for calculating an initial current value when a caliper pressure shifts to a pressure increasing state, a target current value setting unit 23 which, when no pressure increasing cycle was performed last time, estimates a road surface friction coefficient, determines a target differential pressure based on the road surface friction coefficient so estimated, and sets a current value corresponding to this target differential pressure as a target current value, and a valve opening amount adjusting unit 25 which reduces an energization amount from the initial current value towards the target current value with a predetermined gradient.
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