公开(公告)号：US20210114569A1

公开(公告)日：2021-04-22

申请号：US16981165

申请日：2019-03-08

Applicant: ADVICS CO., LTD.

Inventor： Yusaku YAMAMOTO

IPC: B60T8/1755 ,  B60T7/12 ,  B60W40/11 ,  B60W10/18

Abstract: A brake control device is applied to a brake device that controls a front-wheel braking force and a rear-wheel braking force. The brake control device includes a ratio calculation circuit that calculates a target front and rear braking force distribution ratio based on a target pitch angle, and a brake control circuit that performs a stability control by operating the brake device based on the target front and rear braking force distribution ratio during braking.

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：US20210016755A1

公开(公告)日：2021-01-21

申请号：US16980113

申请日：2019-03-28

Applicant: ADVICS CO., LTD.

Inventor： Kunihiro NISHIWAKI ,  Jun NOMURA ,  Yasuhito ISHIDA ,  Tatsushi KOBAYASHI

IPC: B60T13/68 ,  B60T8/17 ,  B60T8/40 ,  B60T15/02

Abstract: The present disclosure comprises a reservoir cutoff valve provided on a pipe and configured to be opened in a non-energization state; a simulator cutoff valve provided on a pipe and configured to be closed in a non-energization state; an operation determination circuit configured to determine whether the brake operation member is in an operation execution state in which the brake operation member is being operated is; and a current control circuit that, when the operation determination circuit determines that the brake operation member is not in an operation execution state, supplies a first current to the reservoir cutoff valve, and when the operation determination circuit determines that the brake operation member is in an operation execution state, supplies a second current greater than the first current to the reservoir cutoff valve.

公开(公告)号：US10857987B2

公开(公告)日：2020-12-08

申请号：US16487002

申请日：2018-03-29

Applicant: ADVICS CO., LTD.

Inventor： Kazuya Morishita ,  Takanori Iida

IPC: B60T13/20

Abstract: A control device including a fluid pressure control unit for controlling a pressure in a wheel cylinder by driving an electric motor of a pump on the basis of a command value; a motor target calculation unit for calculating a motor speed target value in accordance with an amount of increase in a fluid pressure target value; and a difference calculation unit for deriving a calculated value representing a difference obtained by subtracting the actual value from the target value for either the electric motor rotation speed or the pressure. The fluid pressure control unit derives the command value such that when the motor speed target value is less than the previous actual value for the electric motor rotation speed, the previous actual value is made the upper-limit of the command value, and the command value increases in proportion to the motor speed target value and to the calculated value.

公开(公告)号：US20200339082A1

公开(公告)日：2020-10-29

申请号：US16760756

申请日：2018-12-06

Applicant: ADVICS CO., LTD.

Inventor： Takayuki YAMAMOTO ,  Yasuhito ISHIDA ,  Tatsushi KOBAYASHI

IPC: B60T8/172 ,  B60T17/22 ,  B60T8/1761

Abstract: The present invention is a vehicle brake device in which a brake fluid pressurized by a first pressurizing device and a second pressurizing device is supplied to wheel cylinders, wherein the vehicle brake device is provided with: an acquiring unit that acquires a heating correlation value indicating a heating state of the first pressurizing device; and a control unit that executes a first control that decreases the electric power supplied to the first pressurizing device when the heating correlation value acquired by the acquiring unit is equal to or larger than a prescribed threshold value, and a second control that controls the second pressurizing device to compensate for changes in the wheel pressures, i.e., the fluid pressures inside the wheel cylinders, accompanying the execution of the first control.

公开(公告)号：US10800390B2

公开(公告)日：2020-10-13

申请号：US15746675

申请日：2016-07-25

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

Inventor： Masaki Ninoyu ,  Takahiro Okano ,  Yoshio Masuda

IPC: B60T13/68 ,  B60T15/36 ,  B60T13/66 ,  B60T13/14 ,  B60T7/04 ,  B60T8/40 ,  B60T8/00

Abstract: The hydraulic pressure generating device includes a regulator (spool valve) formed by a cylinder body, a spool which slidably moves within the cylinder body, a pilot chamber in which a pilot pressure which is a hydraulic pressure moving the spool along in an axial direction is inputted and an output chamber out of which an output pressure which is a hydraulic pressure corresponding to the pilot pressure is outputted, wherein the hydraulic pressure generating device further includes a spool position obtaining portion which obtains a relative position of the spool relative to the cylinder body and a pilot pressure controlling portion which controls the pilot pressure based on the relative position obtained by the spool position obtaining portion.

公开(公告)号：US20200317174A1

公开(公告)日：2020-10-08

申请号：US16756266

申请日：2018-10-25

Applicant: ADVICS CO., LTD.

Inventor： Masato TERASAKA ,  Chisa KITAHARA

IPC: B60T8/1761 ,  B60T8/52 ,  B60T8/32 ,  B60T8/86

Abstract: This vehicle braking control device executes automatic braking control to adjust a braking torque on the basis of a vehicle target deceleration value corresponding to a distance between the vehicle and an object in front of the vehicle, and executes anti-skid control to suppress excessive wheel slip by adjusting the braking torque on the basis of a wheel speed. The braking control device calculates an actual deceleration value corresponding to the target deceleration value, and executes feedback control on the basis of the target deceleration value and the actual deceleration value such that the actual deceleration value approaches the target deceleration value. The configuration is such that a control gain of the feedback control is reduced when anti-skid control is executed. Further, the configuration may be such that execution of feedback control is prohibited when anti-skid control is executed.

公开(公告)号：US20200309223A1

公开(公告)日：2020-10-01

申请号：US16369518

申请日：2019-03-29

Applicant: ADVICS North America, Inc. ,  ADVICS CO., LTD.

Inventor： Shusuke Suzuki ,  Katsuya Okayama ,  Masato Nishioka

IPC: F16D69/02

Abstract: A brake pad according to an embodiment includes a friction material containing copper at 0.5 wt % or less, a back plate, and an under-layer material laminated between the friction material and the back plate and having an average loss modulus of 500 MPa or more at −50° C. to 0° C. in a bending mode.

公开(公告)号：US10759407B2

公开(公告)日：2020-09-01

申请号：US15746225

申请日：2016-07-27

Applicant: ADVICS CO., LTD.

Inventor： Masatoshi Hanzawa ,  Tetsuaki Tsuzuki

IPC: B60T13/74 ,  B60T7/12 ,  F16D55/226 ,  F16D65/18 ,  B60T8/171 ,  B60T8/172 ,  B60T8/32 ,  F16D66/00 ,  F16D121/24

Abstract: An electric parking brake device generates pressing force by pressing friction materials against a brake disc by causing a piston to move by motor operation. A control device executes: parking processing wherein the motor increases the pressing force to an initial pressing force higher than a lower-limit pressing force; and re-drive processing wherein the motor is driven and the pressing force increased at a re-drive time, which is a predetermined time after the end of execution of parking processing. During parking processing, the control device uses one among the initial pressing force and the predetermined time, in addition to a pressing force decrease characteristic corresponding to an assumed temperature set for use in calculation, as a basis to calculate the other of the initial pressing force and the predetermined time such that the pressing force becomes equal to or less than the lower-limit pressing force at the re-drive time.

公开(公告)号：US10744989B2

公开(公告)日：2020-08-18

申请号：US16078097

申请日：2017-02-17

Applicant: ADVICS CO., LTD.

Inventor： Yuki Ota

IPC: B60T13/74 ,  H02P29/68 ,  B60T8/17 ,  B60T8/172 ,  H02P27/06

Abstract: This brake device is provided with: a brake actuator which applies to a wheel a brake torque depending on the rotation of an electric motor; a booster circuit which boosts a reference voltage outputted from a battery; and a motor control unit which controls the electric motor. Depending on the state of the booster circuit, the motor control unit switches between a first drive process for driving the electric motor by supplying thereto a boost voltage, which is a voltage that has been boosted by the booster circuit, and a second drive process for driving the electric motor by supplying a reference voltage to the electric motor and by performing spark advance control.