| 摘要 |
Disclosed is an electronic brake system. According to an embodiment of the present invention, the electronic brake system, which includes: a reservoir storing oil; a master cylinder having a first hydraulic port and a second hydraulic port and connected to the reservoir to be provided with oil; a pedal displacement sensor sensing displacement of a brake pedal; and a simulation device connected to the master cylinder to provide reaction depending on pedal effort of the brake pedal, comprises a liquid pressure supply device, a hydraulic pressure control unit and an electronic control unit. The liquid pressure supply device comprises: a motor operated by outputting an operation of the brake pedal as an electronic signal through the pedal displacement sensor when the brake pedal is operated; a gear pump discharging or inducing a liquid pressure depending on the rotational force of the motor; and a power transfer part transferring the rotational force of the motor to the gear pump. The hydraulic control unit has a first hydraulic circuit and a second hydraulic circuit, which are provided with a liquid pressure by force generated by the liquid pressure supply device to control the flow of a liquid pressure transferred to a wheel cylinder included in each wheel. The electronic control unit controls a motor and valves based on liquid pressure information and pedal displacement information. The gear pump comprises: a first gear pump connected to the first hydraulic circuit through a first hydraulic flow path; and a second gear pump connected to the second a hydraulic circuit through a second hydraulic flow path. |
