Disclosed herein is an electrically controlled brake system. The electrically controlled brake system includes a motor and a pump, a master cylinder, a reservoir that is coupled to an upper portion of the master cylinder and in which a brake fluid is stored, an accumulator in which a brake fluid pumped from the reservoir is stored by the motor and the pump, a hydraulic path that connects the accumulator and each of wheel cylinders, an apply valve and a release valve that are provided on the hydraulic path and control a hydraulic pressure transferred from the accumulator to each of the wheel cylinders, a pedal simulator including a simulation chamber connected to the master cylinder and configured to store a brake fluid flowing from the master cylinder to provide a reaction force of a brake pedal, and a simulation valve provided at an inlet of the simulation chamber, a backup path that is connected to the hydraulic path and connects the master cylinder and each of the wheel cylinders, a cut valve that is provided on the backup path and blocks the backup path, a first pressure sensor that is provided on the backup path and detects a pressure of the pedal simulator, a second pressure sensor that is provided on the hydraulic path and detects a pressure of the hydraulic path and an electronic control unit (ECU) that determines whether a mechanical leak failure of the cut valve occurs using a correlation between the pressure of the pedal simulator detected by the first pressure sensor and the pressure of the hydraulic path detected by the second pressure sensor.
Electrically controlled brake system in a vehicle and method thereof
2018-06-05
Patent
Electronic Resource
English
IPC: | B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF |
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