公开(公告)号：US20240359676A1

公开(公告)日：2024-10-31

申请号：US18242001

申请日：2023-09-05

Applicant: HL MANDO CORPORATION

Inventor： Yongseong JANG

IPC: B60T13/68 ,  B60T7/04 ,  B60T8/18 ,  B60T17/22

CPC classification number: B60T13/686 ,  B60T7/042 ,  B60T8/1881 ,  B60T17/22 ,  B60T2270/406

Abstract: An exemplary embodiment of the present disclosure provides an electronic brake system, which includes different first and second hydraulic circuits configured to transmit hydraulic pressure, which is discharged in a low-pressure pressing mode state or a high-pressure pressing operation mode state of a hydraulic pressure supply device, to a wheel cylinder provided on at least one vehicle wheel, the electronic brake system including a plurality of valves provided in hydraulic pressure flow path that connects the hydraulic pressure supply device and the first and second hydraulic circuits, the plurality of valves being configured to regulate hydraulic pressure, a volume detection part configured to detect an input volume value of a pressure chamber produced when a motor piston is moved by a rotational force of a motor corresponding to a pedal effort measured by a pedal displacement sensor, and compute and detect, as a circuit volume value, a pressure value of the second hydraulic circuit measured by a pressure sensor, a determination part configured to compare the circuit volume value with the input volume value detected by the volume detection part, determine whether a predetermined condition is satisfied, and determine whether a leakage occurs in the second hydraulic circuit, and a control part configured to perform control to stop the low-pressure pressing mode, switch the mode to the high-pressure pressing operation mode, and detect a leakage occurrence valve among the plurality of valves when the determination part determines that a leakage occurs.