公开(公告)号：US11267444B2

公开(公告)日：2022-03-08

申请号：US16335317

申请日：2017-09-22

Applicant: ADVICS CO., LTD.

Inventor： Terushige Uraoka ,  Keita Nakano ,  Tatsuya Urano

IPC: B60T8/17 ,  B60T13/58 ,  B60T13/74

Abstract: The brake control device controls a hydraulic brake to generate hydraulic braking force on both the front and rear wheels of a four-wheel-drive vehicle, and an electrical parking brake to generate parking brake force, different from the hydraulic braking force, on the front or rear wheels. The brake control device includes: a detection unit that detects parking brake operation for causing the electrical parking brake to generate a parking brake force; and a control unit for reducing the hydraulic braking force generated on the front wheels or the rear wheels and adjusting the hydraulic braking force on the other of the front wheels or the rear wheels to a magnitude allowing a stationary vehicle state to be maintained, before a parking brake force is generated by the electrical parking brake, when a parking brake operation is detected while a stationary state is being maintained solely by the hydraulic braking force.

公开(公告)号：US11572049B2

公开(公告)日：2023-02-07

申请号：US16326999

申请日：2017-08-09

Applicant: ADVICS CO., LTD.

Inventor： Tatsuya Urano ,  Keita Nakano ,  Terushige Uraoka

IPC: B60T7/12 ,  B60T13/74 ,  B60T8/00 ,  B60T8/172

Abstract: A brake control device controls a hydraulic brake that generates hydraulic braking force and an electric parking brake that generates parking braking force different from the hydraulic braking force. The brake control device comprises: a detection unit that detects a parking brake operation for causing the electric parking brake to generate the parking braking force; and a control unit that causes the electric parking brake to generate the parking braking force when the hydraulic braking force per wheel generated by the hydraulic brake, after decreasing below the minimum first braking force per wheel required for maintaining the vehicle stop state only by the electric parking brake, is less than the first braking force, in association with the parking brake operation having been performed in a state where the stop state is maintained only by a hydraulic brake operation for causing the hydraulic brake to generate the hydraulic braking force.

公开(公告)号：US12162448B2

公开(公告)日：2024-12-10

申请号：US17612083

申请日：2020-05-21

Applicant: ADVICS CO., LTD.

Inventor： Tatsuya Urano ,  Terushige Uraoka

IPC: B60T13/74 ,  B60T7/12 ,  B60T7/04 ,  B60T13/66 ,  B60T13/68 ,  F16D65/18 ,  F16D121/02 ,  F16D121/24 ,  F16D125/40 ,  F16D125/48

Abstract: A brake control device includes a control unit configured to calculate a target current value, which is a target current value to the motor, based on master cylinder hydraulic pressure, and reduce an energization level to the motor when an actual current value, which is an actual current value to the motor, reaches the target current value, set a hydraulic pressure threshold value, which is a threshold value of the master cylinder hydraulic pressure corresponding to a braking force necessary for the vehicle to stop based on an inclination angle of a road on which the vehicle is stopped, and calculate a time change amount of the master cylinder hydraulic pressure, and in a case where the time change amount exceeds a predetermined change amount, increase an energization level to the motor when the master cylinder hydraulic pressure subsequently becomes less than or equal to the hydraulic pressure threshold value.