| 摘要 |
PROBLEM TO BE SOLVED: To provide a brake control device of low noise and vibration allowing suitable a brake pressure apply control even in a normal braking domain. SOLUTION: A pressure apply mechanism 43 is provided with a pressure apply piston 51 increasing wheel cylinder pressure and a M/C cut valve 52 cutting off a fluid pressure channel 41 connecting a master cylinder 1 and wheel cylinders 11, 12 side. The pressure apply piston 51 is operated by pilot pressure to increase wheel cylinder pressure. The M/C cut valve 52 cuts off the fluid pressure channel 41 as the pressure apply piston moves. A boost up pump 10c boosting pilot pressure is arranged in the fluid pressure channel 63, and a linear differential pressure valve 66 is provided in parallel with the boost up pump 10c. As the linear differential pressure valve 66 can adjust a pressure difference between before and after the valve in proportion to electric current, the pilot pressure can be controlled with an electric current amount.
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