| 摘要 |
A brake device of an electronic hydraulic brake system is provided to completely mechanically separate an input shaft of a pedal from a master cylinder piston in a normal operation mode and rapidly form a brake pressure in an abnormal operation mode. A brake device of an electronic hydraulic brake system includes an input shaft(310), a pedal operation sensor(500), a pedal simulator(250), a master cylinder(100), a control piston(210), a control chamber(230), a hydraulic supply system(600), a pedal simulator piston(251), a pressure member(260), a simulator piston(253), and a push rod(400). The input shaft is connected with a brake pedal. The pedal operation sensor senses a brake pedal pressure of a driver. The pedal simulator provides a pedal reaction force. The master cylinder transfers a hydraulic force to a wheel brake. The control chamber controls pressure of the master cylinder. The hydraulic supply system transfers oil pressure to the control chamber. The pedal simulator piston is slidable in a control housing.
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