公开(公告)号：US10940847B2

公开(公告)日：2021-03-09

申请号：US16136859

申请日：2018-09-20

Applicant: ADVICS CO., LTD. ,  TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Osayoshi Kato ,  Yoshio Masuda ,  Hiroyuki Kodama ,  Takayuki Yamamoto ,  Yasuji Mizutani

IPC: B60T13/74 ,  B60T8/1766 ,  B60T8/26 ,  B60T8/17 ,  B60T8/36 ,  B60T13/68

Abstract: A brake control device adjusts a front wheel braking hydraulic pressure of front wheel cylinders provided on front wheels of a vehicle and a rear wheel braking hydraulic pressure of rear wheel cylinders provided on rear wheels of the vehicle. The brake control device includes a hydraulic pressure generating unit configured to adjust a hydraulic pressure generated by an electric motor to an adjusted hydraulic pressure and apply the adjusted hydraulic pressure as the rear wheel braking hydraulic pressure and a hydraulic pressure correcting unit configured to adjust to decrease the adjusted hydraulic pressure to be a corrected hydraulic pressure, and apply the corrected hydraulic pressure as the front wheel braking hydraulic pressure.

公开(公告)号：US11203331B2

公开(公告)日：2021-12-21

申请号：US16472026

申请日：2017-12-21

Applicant: ADVICS CO., LTD.

Inventor： Osayoshi Kato ,  Hiroyuki Ando ,  Takahiro Yamaguchi ,  Yoshio Masuda

IPC: B60T13/16 ,  B60T13/58 ,  B60T17/22 ,  B60T13/68 ,  B60T8/17 ,  B60T8/94

Abstract: A hydraulic circuit comprises: a first pressure-boosting flow path that connects a first main flow path and a first wheel cylinder; a first pressure-boosting valve that is disposed in the first pressure-boosting flow path and that opens in a non-energized state; a first pressure-reducing flow path that connects the first wheel cylinder and a reservoir; a first pressure-reducing valve that is disposed in the first pressure-reducing flow path and that closes in a non-energized state; a second pressure-boosting flow path; a second pressure-boosting valve; a second pressure-reducing flow path; and a second pressure-reducing valve. A control unit comprises: a first drive circuit that controls the first pressure-reducing valve; and a second drive circuit that is separate from the first drive circuit and that controls the second pressure-reducing valve.

公开(公告)号：US12194977B2

公开(公告)日：2025-01-14

申请号：US17595266

申请日：2020-05-18

Applicant: ADVICS CO., LTD.

Inventor： Osayoshi Kato ,  Yoshio Masuda

IPC: B60T8/17 ,  B60T8/40 ,  B60T13/20

Abstract: A brake control device includes a brake operation member, a pressurization unit, a master cylinder unit, a connection path connecting a separation chamber and a reaction force chamber, an electromagnetic valve at the connection path, and a control device. The control device includes a specified control section configured to, when the brake operation member is operated in a closed state of the electromagnetic valve, execute activation-time control in which the pressurization unit supplies fluid to a servo chamber based on a predetermined pattern, a determination section configured to determine whether a pressure difference between pressure in the reaction force chamber and pressure in the separation chamber, is equal to or less than a threshold value, and a valve control section configured to open the electromagnetic valve when the determination section determines the pressure difference is equal to or less than the threshold value after start of the activation-time control.