Electronic control brake system for vehicles

An electronic control brake system for vehicles enabling a control of an anti-lock brake system (ABS) mode and a traction control system (TCS) mode, the electronic control brake system comprising a master cylinder forming brake hydraulic pressure according to operation of a brake pedal, wheel brakes, each of which includes a caliper device including a disc provided in a vehicle and advancing and retracting a pair of pads pressing the disc so as to exhibit wheel braking force by the brake hydraulic pressure transmitted from the master cylinder, plural NO type solenoid valves and NC type solenoid valves respectively provided at upstream sides and downstream sides of the wheel brakes and controlling the flow of the brake hydraulic pressure, a low pressure accumulator in which a fluid discharged from the wheel brakes is temporarily stored during the ABS mode braking of the solenoid valves, a pump and a motor pressurizing the fluid stored in the low pressure accumulator so as to discharge the fluid to the wheel brakes or the master cylinder, a check valve provided between the low pressure accumulator and the pump, an NC type shuttle valve provided on an oil suction path connecting from the master cylinder to an inlet of the pump so as to perform the TCS mode, a TC solenoid valve provided between an outlet of the pump and the master cylinder, and electronic control type ON/OFF valves selectively connecting a closed circuit section provided at an oil suction path side to a closed circuit section provided at a wheel brake side.