| 摘要 |
<p>Provided is a hydraulic brake system for reducing a periodic pressure pulsation generated by driving a pump. According to the present invention, the hydraulic brake system comprises a master cylinder which builds the brake hydraulic pressure in response to the operation of a brake pedal; wheel brakes which are prepared at front wheels (FR, FL) and rear wheels (RR, RL) to produce braking force transmitted from the brake hydraulic pressure of the master cylinder; solenoid valves which are prepared at an inlet and an outlet of the wheel brakes to control the flow of the brake hydraulic pressure; a low pressure accumulator in which oil discharged from the wheel brake is temporarily stored when the operation of the solenoid valve is activated; a pump which pressurizes the oil stored in the low pressure accumulator to discharge the oil to the wheel brake or the master cylinder side if necessary; an orifice prepared at a discharging part of the pump; a first hydraulic circuit which connects a first port of the master cylinder to two wheel brakes to control the transmission of the hydraulic pressure; a second hydraulic circuit which connects a second port of the master cylinder to remaining two wheel brakes to control the transmission of the hydraulic pressure; and a buffer which communicates each of main fluid passage of the first hydraulic circuit and the second hydraulic circuit and is connected to a communication path prepared between the discharging port and the orifice of the pump, wherein the buffer comprises a plate-shaped elastic plate which divides the communicating passage into two independent chambers and can be elastically deformed by the pressure of the oil introduced to the chamber; and a cap for sealing the communicating passage.</p> |
