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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：US20250058755A1
公开(公告)日：2025-02-20
申请号：US18721785
申请日：2022-12-22
Applicant: ADVICS CO., LTD.
Inventor： Daichi NAGAE , Shunya WATANABE
Abstract: A braking control device for vehicles that comprises: a first unit that outputs a supply pressure in accordance with the amount a braking operation member is operated; a second unit that is provided between the first unit and a wheel cylinder, regulates the supply pressure, and outputs a wheel pressure to the wheel cylinder; a communications bus that transfers signals between the first unit and the second unit; an operation amount sensor that is connected to the first unit and detects the operation amount; and a supply pressure sensor that is connected to the second unit and detects the supply pressure. The first unit calculates a target pressure on the basis of the operation amount, obtains the supply pressure from the second unit via the communications bus, and performs feedback control such that the supply pressure matches the target pressure.
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公开(公告)号：US20210276534A1
公开(公告)日：2021-09-09
申请号：US17251414
申请日：2019-06-21
Applicant: ADVICS CO., LTD.
Inventor： Masaki MARUYAMA , Shunya WATANABE
IPC: B60W20/14 , B60W10/08 , B60W10/188 , B60W10/192 , B60T13/66
Abstract: A brake control device is applied to a vehicle including a regenerative generator. The brake control device includes a pressure adjustment unit that includes an electric pump and a pressure adjustment valve, and that adjusts adjustment liquid pressure of 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, before starting a replacement operation to replace a regenerative braking force by the regenerative generator with a friction braking force by the adjustment liquid pressure, performs preceding pressurization to increase the adjustment liquid pressure from “0” and maintain the adjustment liquid pressure at predetermined liquid pressure, and after performing the preceding pressurization, increases the adjustment liquid pressure more than the predetermined liquid pressure by increasing a rotation speed of the electric pump, and then execute the replacement operation.
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Patent Agency Ranking
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
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.
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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：US20240375520A1
公开(公告)日：2024-11-14
申请号：US18684341
申请日：2022-08-31
Applicant: ADVICS CO., LTD.
Inventor： Shunya WATANABE
IPC: B60L7/26
Abstract: In a vehicle to which a braking control device is applied, the ratio of the rear wheel frictional braking force to the front wheel frictional braking force becomes a prescribed value in a state where the front and rear wheel pressures are equal. An actuator generates front wheel frictional braking force by adjusting front wheel pressure and generates rear wheel frictional braking force by adjusting rear wheel pressure, and a controller that controls the actuator. When the regeneration device can generate the regenerative braking force, the controller individually adjusts the front and rear wheel pressures based on a regenerative braking force so that the ratio of the total rear wheel braking force to the total front wheel braking force becomes a prescribed value. However, when the regeneration device cannot generate the regenerative braking force, the controller adjusts the front wheel pressure and the rear wheel pressure to be equal.
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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：US20200079331A1
公开(公告)日：2020-03-12
申请号：US16615506
申请日：2018-05-29
Applicant: ADVICS CO., LTD.
Inventor： Manabu TANAKA , Shunya WATANABE
Abstract: This braking control device pumps a brake fluid from a reservoir to each wheel cylinder by one fluid pump and includes an electric motor which drives the fluid pump; and a controller which controls the electric motor. The controller calculates a target fluid pressure on the basis of at least one among the vehicle wheel speed, the vehicle deceleration state, and the turning state of the vehicle, calculates a target discharge amount for the fluid pump on the basis of the target fluid pressure, and controls the electric motor on the basis of the target discharge amount. The controller has a front wheel calculation map of the relationship between the fluid pressure and the inflow volume of the brake fluid corresponding to a front wheel cylinder, and a rear wheel calculation map corresponding to a rear wheel cylinder, and calculates the target discharge amount on the basis of the maps.
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