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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.
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公开(公告)号：US20190100184A1
公开(公告)日：2019-04-04
申请号：US16086891
申请日：2017-03-28
Applicant: ADVICS CO., LTD.
Inventor： Yasuhito ISHIDA , Tatsushi KOBAYASHI , Takayuki YAMAMOTO
IPC: B60T13/68 , B60T7/04 , B60T8/40 , B60W10/188 , B60W10/192
Abstract: A braking device includes: a reservoir; a master cylinder in which when the amount of operation performed on a brake pedal reaches or exceeds a predetermined amount, a port communicating between a pressure chamber and the reservoir is cut off and hydraulic pressure corresponding to the brake pedal operation amount is generated; a hydraulic pressure unit for adjusting the wheel cylinder hydraulic pressure; and a control unit for controlling the hydraulic pressure unit. The control unit determines, based on a temperature-related value related to the temperature of a friction member pressed by the wheel cylinder hydraulic pressure against a rotating member fixed to a wheel, whether the friction member is in a fade state. When the friction member is in a fade state, the control unit controls the hydraulic pressure unit to suction brake fluid from the reservoir through the port, and is fed to the wheel cylinder.
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公开(公告)号：US20240166055A1
公开(公告)日：2024-05-23
申请号：US18551677
申请日：2022-03-22
Applicant: ADVICS CO., LTD.
Inventor： Masaki MARUYAMA , Takayuki YAMAMOTO
IPC: B60L7/26
CPC classification number: B60L7/26
Abstract: Front and rear wheel required braking forces are calculated so that a braking force required as a whole of the vehicle matches the sum of the front and rear wheel required braking forces, and a ratio of the rear wheel required braking force to the front wheel required braking force is constant. When the front and rear wheel required braking forces are equal to or less than the maximum front and rear wheel regenerative braking forces, the front and rear wheel required braking forces are achieved only by the front and rear wheel regenerative braking forces. When the front and rear wheel required braking forces are larger than the maximum front and rear wheel regenerative braking forces, the front and rear wheel required braking forces are achieved by the front and rear wheel regenerative braking forces and the front and rear wheel frictional braking forces.
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公开(公告)号：US20210122339A1
公开(公告)日：2021-04-29
申请号：US16645114
申请日：2018-09-28
Applicant: ADVICS CO., LTD.
Inventor： Ken KUZUYA , Tomotaka ASANO , Yasuhito ISHIDA , Tatsushi KOBAYASHI , Takayuki YAMAMOTO
Abstract: This vehicle brake device comprises: a simultaneous driving determination section which determines whether it is necessary to simultaneously drive an upstream-side motor and a downstream-side motor; and a PWM control section which, when the determination result by the simultaneous driving determination section is in the affirmative, changes the duty ratio of the PWM signal to be output to the upstream-side motor so as to be smaller than when the determination result by the simultaneous driving determination section is in the negative, and uses PWM control to drive the upstream-side motor.
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公开(公告)号：US20200247379A1
公开(公告)日：2020-08-06
申请号：US16641929
申请日：2018-09-26
Applicant: ADVICS CO., LTD.
Inventor： Takayuki YAMAMOTO , Hiroyuki KODAMA , Hiroyuki ANDO
Abstract: A brake control device including a pressure adjusting unit including an electric pump and an electromagnetic valve, and that adjusts, using the electromagnetic valve, a brake liquid discharged by the electric pump to an adjusted liquid pressure and introduces the adjusted liquid pressure to the wheel cylinders of the rear wheels; and a master unit that includes a master cylinder and a master piston, and that includes a master chamber connected to the wheel cylinders of the front wheels and a servo chamber to which the adjusted liquid pressure is introduced and which provides, to the master piston, an advancing force that opposes a retreating force applied to the master piston by the master chamber.
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Patent Agency Ranking
公开(公告)号：US20210362698A1
公开(公告)日：2021-11-25
申请号：US16644004
申请日：2018-09-05
Applicant: ADVICS CO., LTD.
Inventor： Yasuhito ISHIDA , Kunihiro NISHIWAKI , Tatsushi KOBAYASHI , Tomotaka ASANO , Ken KUZUYA , Takayuki YAMAMOTO
Abstract: A braking control device includes an upstream mechanism control unit, a determination unit, and a control unit. The upstream mechanism control unit is configured to feedback control the upstream mechanism in such a manner that a detected hydraulic pressure detected by a hydraulic pressure sensor is brought to an upstream target hydraulic pressure. The hydraulic pressure sensor detects a hydraulic pressure of the hydraulic pressure circuit. The determination unit is configured to determine, based on the detected hydraulic pressure by the hydraulic pressure sensor, whether hydraulic pressure hunting is occurring. The control unit is configured to control the downstream mechanism based on the upstream target hydraulic pressure and the target wheel pressure in a case where the determination unit determines that the hydraulic pressure hunting is occurring.
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公开(公告)号：US20210323525A1
公开(公告)日：2021-10-21
申请号：US17288047
申请日：2019-11-18
Applicant: ADVICS CO., LTD.
Inventor： Takayuki YAMAMOTO
Abstract: A vehicle braking device provided with a hydraulic circuit having a first system, a second system, and a connection flow channel connecting both systems. The vehicle braking device includes a fluid supply unit supplying fluid to the first system, a first braking unit, for applying a braking force to a first wheel by using the fluid flowing in the first system, a second braking unit, for applying a braking force to a second wheel by using the fluid flowing in the second system, a determination unit for determining whether the fluid is leaking from the second system, and a control unit for executing specific control for controlling the fluid supply unit so that an amount of fluid supplied to the first system is increased in response to determination by the determination unit that the fluid is leaking from the second system.
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公开(公告)号：US20200282840A1
公开(公告)日：2020-09-10
申请号：US16645637
申请日：2018-09-26
Applicant: ADVICS CO., LTD.
Inventor： Takayuki YAMAMOTO
IPC: B60L7/26 , B60T13/58 , B60T8/1755 , B60T8/17
Abstract: A brake control mounted in a vehicle equipped with a regenerative generator on either the front wheels or the rear wheels including a first pressure adjusting unit that adjusts a liquid pressure generated by a first electric motor to a first liquid pressure and provides the first liquid pressure to wheel cylinders of wheels on one side; and a second pressure adjusting unit that is configured by a fluid pump, which is driven by a second electric motor, and a pressure adjusting valve, and that performs adjustment to increase the first liquid pressure to a second liquid pressure and provides the second liquid pressure to wheel cylinders of wheels on the other side.
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公开(公告)号：US20190092303A1
公开(公告)日：2019-03-28
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
Abstract: A brake control device adjusts a front wheel braking hydraulic pressure of front wheel cylinders 71, 72 provided on front wheels of a vehicle and a rear wheel braking hydraulic pressure of rear wheel cylinders 73, 74 provided on rear wheels of the vehicle. The brake control device includes a hydraulic pressure generating unit 1A configured to adjust a hydraulic pressure generated by an electric motor 11 to an adjusted hydraulic pressure and apply the adjusted hydraulic pressure as the rear wheel braking hydraulic pressure and a hydraulic pressure correcting unit 1B 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.
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公开(公告)号：US20170274880A1
公开(公告)日：2017-09-28
申请号：US15510842
申请日：2014-11-25
Applicant: ADVICS CO., LTD.
Inventor： Kunihiro NISHIWAKI , Takayuki YAMAMOTO , Kyosuke HATA , Yasuhito ISHIDA
CPC classification number: B60T8/4086 , B60T7/042 , B60T13/14 , B60T13/146 , B60T13/662 , B60T13/686 , B60T17/22 , B60T2220/04 , B60T2270/60 , B60T2270/604
Abstract: A vehicle braking device includes: a stroke simulator for generating a hydraulic pressure corresponding to a brake operation in a hydraulic chamber, the stroke simulator having a cylinder part and a piston part for sliding through the inside of the cylinder part in conjunction with a brake operation of a brake pedal; a booster mechanism having an input part directly pressed by the piston part or pressed by a spring interposed between the input part and the piston part in conjunction with the sliding of the piston part, and thereby moved in sliding fashion through the inside of the cylinder, and a hydraulic pressure generating part for generating a first hydraulic pressure corresponding to the movement of the input part based on the hydraulic pressure of an accumulator; and a wheel cylinder for applying a braking force to a vehicle wheel on the basis of the first hydraulic pressure.
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