BRAKE CONTROL SYSTEM


  1. CONSTRUCTION


    1. The brake actuator consists of the actuator portion and skid control ECU.

    2. The brake actuator regulates the hydraulic brake pressure to each wheel cylinder.

      A00Z0F0C01
      *1 Skid Control ECU *2 Actuator Portion
      *3 Hydraulic Brake Booster *4 Stroke Simulator
      A00Z0BU Brake Actuator - -

      1. The construction of the brake actuator, and the role of each part, is as follows.

        Component Function
        Linear Solenoid Valve Controls the wheel cylinder pressure to generate a braking force responsive to the braking force requirement when the brake pedal is depressed normally.
        Switching Solenoid Valve Switches the brake hydraulic path when the brake control system is activated.
        Control Solenoid Valve Controls the wheel cylinder pressure when the ABS with EBD, Brake Assist, TRC and VSC are activated.
        Master Cylinder Pressure Sensor The master cylinder pressure sensor converts the fluid pressure generated by the hydraulic brake booster into electrical signals and transmits them to the skid control ECU. Accordingly, the skid control ECU determines the braking force required by the driver.
        Front Wheel Cylinder Pressure Sensor This sensor detects the fluid pressure that acts on the respective wheel cylinders and transmits them to the skid control ECU in the form of feedback. Accordingly, the skid control ECU monitors the fluid pressure of the wheel cylinders and controls the control solenoid valve, in order to achieve the optimal wheel cylinder pressures.
        Accumulator Pressure Sensor (Pacc) The accumulator pressure sensor constantly detects the brake fluid pressure in the accumulator and transmits the signals to the skid control ECU. Accordingly, the skid control ECU controls the pump motor.
        A00Z05HC01
        *1 Reservoir Tank *2 Brake Fluid Level Warning Switch
        *3 Accumulator *4 Pump Motor
        *5 Relief Valve *6 Hydraulic Brake Booster
        *7 Stroke Simulator *8 Switching Solenoid Valve (SSC)
        *9 Master Cylinder Pressure Sensor *10 Accumulator Pressure Sensor (Pacc)
        *11 Switching Solenoid Valve (SMC) *12 Switching Solenoid Valve (SRC)
        *13 Linear Solenoid Valve (SLA) *14 Front Wheel Cylinder Pressure Sensor
        *15 Switching Solenoid Valve (SCC) *16 Linear Solenoid Valve (SLR)
        *17 Pressure Holding Solenoid Valve (FLH) *18 Pressure Holding Solenoid Valve (FRH)
        *19 Pressure Holding Solenoid Valve (RLH) *20 Pressure Holding Solenoid Valve (RRH)
        *21 Pressure Reduction Solenoid Valve (FLR) *22 Pressure Reduction Solenoid Valve (FRR)
        *23 Pressure Reduction Solenoid Valve (RLR) *24 Pressure Reduction Solenoid Valve (RRR)
        *25 Front Left Wheel Cylinder *26 Front Right Wheel Cylinder
        *27 Rear Left Wheel Cylinder *28 Rear Right Wheel Cylinder
        *29 Control Solenoid Valve *30 Brake Actuator