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公开(公告)号：US20210221231A1
公开(公告)日：2021-07-22
申请号：US15733910
申请日：2019-06-24
Applicant: ADVICS CO., LTD.
Inventor： Masaki MARUYAMA , Shunya WATANABE
Abstract: A brake control device applied to a vehicle including a regenerative generator connected to a front wheel has an electric pump, and first and second pressure adjustment valves. The first pressure adjustment valve is provided in a brake fluid reflux path including the electric pump, adjusts the brake fluid to a first hydraulic pressure, and adjusts a rear wheel hydraulic pressure in a rear wheel cylinder to the first hydraulic pressure. The second pressure adjustment valve is provided in the reflux path, reduces the first hydraulic pressure to a second hydraulic pressure, and adjusts front wheel hydraulic pressure in a front wheel cylinder to the second hydraulic pressure. A front wheel flow rate to increase the front wheel hydraulic pressure is calculated using a brake operation member operation amount and a regeneration amount of the regenerative generator. The first pressure adjustment valve is controlled using the front wheel flow rate.
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公开(公告)号：US20230264664A1
公开(公告)日：2023-08-24
申请号：US18007074
申请日：2021-07-29
Applicant: ADVICS CO., LTD.
Inventor： Masaki MARUYAMA
CPC classification number: B60T8/3275 , B60T7/12 , B60T8/171
Abstract: The braking control device includes a determination unit configured to determine whether a vehicle is in a stopped state; a setting unit configured to set a vehicle stop maintenance braking force necessary for maintaining the stopped state of the vehicle; and a control unit configured to execute, when the determination unit determines that the vehicle is in the stopped state and an actual braking force applied in the stopped state of the vehicle is greater than the vehicle stop maintenance braking force set by the setting unit, vehicle stop maintenance control for decreasing the actual braking force toward the vehicle stop maintenance braking force regardless of a required braking force required by at least one of a driver of the vehicle and another device.
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公开(公告)号：US20210394733A1
公开(公告)日：2021-12-23
申请号：US17288034
申请日：2019-11-18
Applicant: ADVICS CO., LTD.
Inventor： Masaki MARUYAMA , Yoshio MASUDA , Shunya WATANABE
Abstract: A vehicle braking device includes a first supply unit supplying fluid to main flow channels connected to wheel cylinders of a vehicle, a differential solenoid valve provided on the main flow channels and generating a differential pressure across the differential solenoid valve, a second supply unit supplying fluid to the wheel cylinders by drawing at least some fluid supplied from the first supply unit through branch flow channels branching off from the main flow channels upstream of the differential solenoid valve, and a setting unit setting a supply amount of fluid supplied from the first supply unit in accordance with a draw amount of fluid drawn by the second supply unit.
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公开(公告)号：US20190061532A1
公开(公告)日：2019-02-28
申请号：US16078265
申请日：2017-02-24
Applicant: ADVICS CO., LTD.
Inventor： Masaki MARUYAMA , Takahiro YAMAGUCHI , Koichi KOKUBO
Abstract: An electric braking device includes: a first valve unit for adjusting a first differential pressure between a master cylinder side liquid pressure and a wheel cylinder side liquid pressure; a storage unit forming a fluid storage chamber; second valve units for adjusting a second differential pressure between the master cylinder side liquid pressure and a storage chamber side liquid pressure; an electric pump for discharging the fluid in the storage chamber; and a control unit which, while operating the electric pump during a time from initiation of braking force application until a request value acquired by a request braking force acquiring unit reaches a maximum value, controls the first valve unit such that the first differential pressure becomes zero, and controls the second valve units such that the second differential pressure becomes zero.
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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.
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Patent Agency Ranking
公开(公告)号：US20220105909A1
公开(公告)日：2022-04-07
申请号：US17425735
申请日：2020-01-27
Applicant: ADVICS CO., LTD.
Inventor： Masaki MARUYAMA
Abstract: A brake control device of a brake device includes a first acquisition unit acquiring an operating force PF inputted to a brake pedal, a second acquisition unit acquiring a stroke amount SS of the brake pedal, a target derivation unit deriving a target braking power BPTr based on the operating force PF and the stroke amount SS, and a brake controller controlling a vehicle braking power based on the target braking power BPTr. The target derivation unit increases or holds the target braking power BPTr when the operating force PF decreases while the stroke amount SS increases.
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公开(公告)号：US20210197779A1
公开(公告)日：2021-07-01
申请号：US17057716
申请日：2019-06-21
Applicant: ADVICS CO., LTD.
Inventor： Masaki MARUYAMA , Shunya WATANABE
Abstract: A brake control device adjusts a hydraulic pressure in a wheel cylinder in response to an operation amount of a brake operation member, and includes “a pressure adjustment unit that includes an electric pump and a pressure adjustment valve and adjusts hydraulic pressure in a pressure adjustment fluid path between the electric pump and the pressure adjustment valve”, and “a controller that controls the electric pump and the pressure adjustment valve”. The controller calculates an operation speed equivalent amount based on the operation amount, calculates a target rotation speed based on the operation speed equivalent amount, and controls the electric pump such that an actual rotation speed of the electric pump approaches the target rotation speed.
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公开(公告)号：US20160200301A1
公开(公告)日：2016-07-14
申请号：US14902664
申请日：2014-05-12
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA , ADVICS CO., LTD.
Inventor： Yusuke KAMIYA , Masaaki KOMAZAWA , Kiyoyuki UCHIDA , Masaki NINOYU , Akitaka NISHIO , Masaki MARUYAMA
CPC classification number: B60T7/042 , B60T1/10 , B60T8/4077 , B60T8/4081 , B60T8/4291 , B60T13/146 , B60T13/662 , B60T13/686 , B60T2270/604 , F16D61/00
Abstract: Vibrations of a hydraulic pressure in an upstream portion due to operations of a slip control device during anti-lock control are transmitted to a control pressure chamber via a pressurizing piston of a master cylinder and a control piston of a regulator. During anti-lock control, in contrast, a pressure-increase linear valve and a pressure-reduction linear valve are opened, allowing change in volume of the control pressure chamber, resulting in reduction in stiffness. This reduction suppresses vibrations of a hydraulic pressure in the control pressure chamber, resulting in suppression of vibrations of a hydraulic pressure in a front pressure chamber. As a result, it is possible to reduce the lowering in control accuracy for a hydraulic pressure in a brake cylinder in anti-lock control using the hydraulic pressure in the front pressure chamber, which can well avoid a long braking distance.
Abstract translation: 在防抱死控制期间由于滑动控制装置的操作而导致的上游部分中的液压的振动经由主缸的加压活塞和调节器的控制活塞传递到控制压力室。 相反，在防抱死控制期间，打开增压线性阀和减压直线阀，允许控制压力室的体积变化，从而降低刚度。 该减小抑制了控制压力室中的液压的振动，从而抑制了前压力室中的液压的振动。 其结果是，能够利用前压力室内的液压减少防抱死控制中的液压的控制精度，能够避免长的制动距离。
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公开(公告)号：US20240025388A1
公开(公告)日：2024-01-25
申请号：US17310298
申请日：2020-01-27
Applicant: ADVICS CO., LTD.
Inventor： Masaki MARUYAMA
IPC: B60T13/74
CPC classification number: B60T13/741
Abstract: A brake control device forming a brake device includes an acquisition unit acquiring an operation value which is a value relating to an operation of a brake pedal in each control cycle, a target derivation unit deriving a final target braking power BPTrF which is a target of a braking power at a point in time when a prescribed time passes from a start of the operation of the brake pedal based on an increase state of the operation value when the operation of the brake pedal is started, and a brake controller increasing a vehicle braking power BP toward the final target braking power BPTrF.
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公开(公告)号：US20180093652A1
公开(公告)日：2018-04-05
申请号：US15535673
申请日：2015-11-16
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA , ADVICS CO., LTD.
Inventor： Hiroshi NAKAOKA , Kiyoyuki UCHIDA , Masaki MARUYAMA
IPC: B60T8/18 , B60T15/02 , B60T8/1755 , B60T13/14
CPC classification number: B60T8/1831 , B60T8/17 , B60T8/17555 , B60T8/4077 , B60T13/142 , B60T13/74 , B60T15/028 , B60T15/36 , B60T2270/60
Abstract: A hydraulic brake system, including: a brake operation member; a brake device; a master cylinder; a communication switching valve; a low-pressure-source shut-off valve; a high-pressure source; a regulator; a pressure adjuster; and a controller, wherein, when a pressurizing state of the master cylinder is switched from a first pressurizing state to a second pressurizing state after initiation of an operation on the brake operation member, the controller executes a pressurizing-state switching control in which switching of a state of the low-pressure-source shut-off valve from an open state to a closed state and switching of a state of the communication switching valve from a closed state to an open state are carried out after a pressure-regulating state of the regulator has been switched from a first pressure-regulating state to a second pressure-regulating state by controlling the pressure adjuster to increase a second pilot pressure while the first pressurizing state is maintained.
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