Importance

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Abstract

An arrangement for preventing the master cylinder of a brake system from getting damaged even if the brake fluid in the master cylinder reservoir is suctioned into the brake circuit during traction control. A wheel brake pressure control valve is provided in the main line. The system also includes a discharged fluid reservoir for storing fluid discharged from the control valve, a pump for returning the fluid in the discharged fluid reservoir into the fluid return point of the main line, a traction control changeover valve for checking any fluid flow from the fluid return point toward the master cylinder, and an intermediate reservoir provided in the supply line branching from the main line and adapted to communicate with the main line during normal braking. The system further includes a relief valve provided in a connecting line branching from the main line to check any fluid flow from the supply line toward the intermediate reservoir during traction control. Another changeover valve is provided to open and close communication between the intermediate reservoir and the discharged fluid reservoir.

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First Claim