公开(公告)号：US20240166186A1

公开(公告)日：2024-05-23

申请号：US18551666

申请日：2022-03-22

Applicant: ADVICS CO., LTD.

Inventor： Masaki MARUYAMA ,  Takayuki YAMAMOTO

IPC: B60T13/68 ,  B60T8/1766 ,  B60T8/30

CPC classification number: B60T13/686 ,  B60T8/1766 ,  B60T8/306 ,  B60T2270/604

Abstract: An actuator supplies a front wheel brake fluid pressure and a rear wheel brake fluid pressure equal to generate front and rear wheel frictional braking forces. A controller calculates a braking force required as a whole of a vehicle, and calculates front and rear wheel required braking forces so that a sum of the front and rear wheel required braking force matches a target vehicle body braking force and the ratio of the rear wheel required braking force to the front wheel required braking force is a constant value. A rear wheel restricted regenerative braking force is calculated by multiplying the maximum front wheel regenerative braking force by a constant value, and the smaller one of maximum rear wheel regenerative braking force and the rear wheel restricted regenerative braking force is determined as the rear wheel reference regenerative braking force.

公开(公告)号：US20240109523A1

公开(公告)日：2024-04-04

申请号：US18249408

申请日：2021-10-26

Applicant: ADVICS CO., LTD.

Inventor： Tsuyoshi OTAKE ,  Atsushi TAKAHASHI

IPC: B60T8/17 ,  B60T11/20

CPC classification number: B60T8/17 ,  B60T11/203 ,  B60T13/662

Abstract: A vehicle brake device includes a first electric motor, a first electrically powered cylinder device, a first electromagnetic valve, and a first pressure sensor serving as first elements, a second electric motor, a second electrically powered cylinder device, a second electromagnetic valve, and a second pressure sensor serving as second elements, and a circuit board in which a first sector in which a first circuit for controlling the first element is formed and a second sector in which a second circuit for controlling the second element is formed are arranged side by side. In the vehicle brake device, the first element controlled only by the first circuit is disposed so as to face the first sector, and the second element controlled only by the second circuit is disposed so as to face the second sector.

公开(公告)号：US20240092321A1

公开(公告)日：2024-03-21

申请号：US18264103

申请日：2022-02-25

Applicant: ADVICS CO., LTD.

Inventor： Shunya WATANABE ,  Yoshio MASUDA

IPC: B60T7/04 ,  B60T8/171 ,  B60T13/20

CPC classification number: B60T7/042 ,  B60T8/171 ,  B60T13/20

Abstract: A control device is applied to a friction brake device of a vehicle. The friction brake device produces a friction brake force in the vehicle by starting driving of an electric motor. The control device includes a motor control unit configured to control the electric motor. The control device includes an acquisition unit configured to acquire an index value corresponding to a magnitude of a target value of the friction brake force. A value for determining a magnitude of the index value is set as a limit determination value. The motor control unit limits an increase speed of the number of rotations of the electric motor if the index value is equal to or less than the limit determination value, and releases the limit if the index value exceeds the limit determination value.

公开(公告)号：US20230331204A1

公开(公告)日：2023-10-19

申请号：US18026871

申请日：2021-09-30

Applicant: ADVICS CO., LTD.

Inventor： Yusaku YAMAMOTO

IPC: B60T8/58 ,  B60T8/171

CPC classification number: B60T8/58 ,  B60T8/171 ,  B60T2240/00 ,  B60T2210/30 ,  B60T2210/32

Abstract: A vehicle stop determination device includes: a vehicle wheel speed sensor that outputs a signal according to a rotational speed of vehicle wheels; an acquisition unit that acquires a wheel speed at a predetermined reference time that a vehicle decelerates, based on an output signal of the vehicle wheel speed sensor; a derivation unit that derives a stopping position where the vehicle stops, based on the wheel speed acquired by the acquisition unit; and a determination unit that executes a stop determination to determine that the vehicle has stopped, when a difference distance between a position of the vehicle after the reference time and the stopping position is a stop determination value or less.

公开(公告)号：US11738727B2

公开(公告)日：2023-08-29

申请号：US17259739

申请日：2019-07-29

Applicant: ADVICS CO., LTD.

Inventor： Kenichiro Takahashi

IPC: B60T8/17 ,  B60T8/172 ,  B60T17/22

CPC classification number: B60T8/17 ,  B60T8/172 ,  B60T17/221 ,  B60T2270/402 ,  B60T2270/403 ,  B60T2270/406

Abstract: A brake control device includes a first braking unit and a second braking unit for applying braking force to wheels of a vehicle. The second braking unit generates auxiliary braking force when actual braking force generated by the first braking unit is short by a predetermined amount. This brake control device includes a determination unit that determines whether a delay correlation value correlated with response delay of the actual braking force is within an allowable range when the auxiliary braking force is generated, and a control unit that executes auxiliary reduction control for reducing the auxiliary braking force when the determination unit determines that the delay correlation value is within the allowable range.

公开(公告)号：US20230208244A1

公开(公告)日：2023-06-29

申请号：US18068709

申请日：2022-12-20

Applicant: ADVICS CO., LTD. ,  AISIN CORPORATION

Inventor： Yasuhito NAKASHIMA ,  Atsushi INOUE ,  Kyohei ASAHI ,  Keiji OGAWA

IPC: H02K5/10

CPC classification number: H02K5/10 ,  B60T13/148

Abstract: A motor unit includes: a motor provided with a first chamber and including a shaft; a rotary member coupled to the shaft outside the first chamber; a housing provided with a second chamber accommodating the rotary member; and a guide member including a peripheral wall between the first chamber and the second chamber, the guide member being provided with a third chamber inside the peripheral wall, wherein the motor unit is provided with a fourth chamber which is outside the first chamber and is open to an inner surface of the second chamber and/or the third chamber, the inner surface of the third chamber includes a guide, and the guide extends farther away from a rotation axis as is closer to the fourth chamber.

公开(公告)号：US20230100969A1

公开(公告)日：2023-03-30

申请号：US17802810

申请日：2021-03-15

Applicant: ADVICS CO., LTD.

Inventor： Kazutoshi YOGO ,  Masataka SAKAUE

IPC: B60T13/14 ,  B60T13/68 ,  B60T17/18 ,  B60T8/17 ,  B60T8/42

Abstract: A vehicle braking device includes: a first hydraulic pressure output unit that is connected to a master chamber through a first liquid passage and outputs hydraulic pressure to first wheel cylinders based on a hydraulic pressure of the first liquid passage; a hydraulic pressure generating unit that generates hydraulic pressure independently of a master cylinder; a second hydraulic pressure output unit that is connected to the hydraulic pressure generating unit through a second liquid passage and outputs hydraulic pressure to second wheel cylinders based on a hydraulic pressure of the second liquid passage; a normally closed communication control valve that is provided in a communication passage connecting the first liquid passage and the second liquid passage and opens and closes the communication passage; and a normally open master cut valve in the first liquid passage on the master cylinder side relative to a connection portion with the communication passage.

公开(公告)号：US20230090665A1

公开(公告)日：2023-03-23

申请号：US17942400

申请日：2022-09-12

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

Inventor： Shogi FUKUKAWA ,  Michihiro OTSUBO ,  Akitsugu SAKAI ,  Kazuki MIYAKE

IPC: B60W30/14 ,  B60W40/076 ,  B60W40/10 ,  B60W50/00

Abstract: A travel controller executes a first correction process on a request value when the vehicle is traveling on an uphill road, and executes a second correction process on the request value when the vehicle is traveling on a downhill road. The first correction process corrects the request value such that the traveling speed is higher than that in a case in which the first correction process is not executed. The second correction process corrects the request value such that the traveling speed is lower than that in a case in which the second correction process is not executed. If hard braking of the vehicle is requested during execution of the first correction process, the travel controller sets a correction amount of the request value to a lower value than that in a case in which hard braking of the vehicle is not requested.

公开(公告)号：US20230063777A1

公开(公告)日：2023-03-02

申请号：US17790546

申请日：2021-01-14

Applicant: ADVICS CO., LTD.

Inventor： Yusaku YAMAMOTO

IPC: B60T8/1755

Abstract: A braking control device, when stopping a vehicle in a state where a braking force is being applied to the vehicle, executes a reducing control of reducing the braking force corresponding to a braking request before the vehicle stops and executes an increasing control of increasing the braking force corresponding to the braking request before the reducing control in order to suppress vehicle pitching behavior generated when the braking force is applied to the vehicle. The control device sets braking force increase amount in the increasing control based on a difference distance that is a difference between a first distance correlated with a vehicle traveling distance from a reduction start timing when the reducing control is executed until the stopping of the vehicle and a second distance correlated with a vehicle traveling distance from the reduction start timing when the reducing control is not executed until the stopping of the vehicle.

公开(公告)号：US11541857B2

公开(公告)日：2023-01-03

申请号：US16767924

申请日：2018-11-29

Applicant: ADVICS CO., LTD.

Inventor： Masato Terasaka ,  Chisa Kitahara

IPC: B60T8/1764 ,  B60T8/1755 ,  B60T8/24 ,  B60T13/74

Abstract: In the case that the road surface is determined to have different friction coefficients on the left and right wheels, this braking control device performs antiskid control for adjusting the increase slope of front wheel braking torque on the side with the higher friction coefficient. A steering angle sensor detects the steering angle, and a yaw rate sensor detects the yaw rate. The device calculates a reference turning amount on the basis of the steering angle, calculates an actual turning amount on the basis of the yaw rate, and sets the increase slope on the basis of the deviation between the reference turning amount and the actual turning amount. Also, if this deviation becomes larger, a correction is made such that the set increase slope becomes smaller. Further, if the deviation becomes smaller, a correction is made such that the set increase slope becomes larger.