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公开(公告)号：US10173657B2
公开(公告)日：2019-01-08
申请号：US15110629
申请日：2015-01-23
Applicant: ADVICS CO., LTD.
Inventor： Takahiro Okano , Masaki Ninoyu
Abstract: Provided is a braking device capable of suppressing an overshoot or undershoot in output pressure. This vehicle braking device is configured such that a pressure adjustment unit has a piston which is driven by the difference between force corresponding to pilot pressure and force corresponding to output pressure, and a control unit estimates, on the basis of a stroke-related value regarding the amount of movement of the piston, the amount of change of the output pressure that changes even after switching from pressure increase control or pressure reduction control to holding control of the output pressure, and controls a valve unit on the basis of the estimated amount of change of the output pressure.
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公开(公告)号：US09783170B2
公开(公告)日：2017-10-10
申请号：US14681774
申请日：2015-04-08
Applicant: ADVICS CO., LTD. , TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Masaki Ninoyu , Takahiro Okano , Daisuke Nakata , Yuusuke Kamiya , Masaaki Komazawa
IPC: G06F7/70 , G06F19/00 , G06G7/00 , G06G7/76 , B60T8/17 , F16K31/12 , F16K31/36 , B60T13/00 , B60T15/14 , G01S19/19 , B60T13/68 , B60T8/36
CPC classification number: B60T8/17 , B60T8/36 , B60T13/686 , G01S19/19
Abstract: The vehicle control apparatus gives a control current to the electromagnetic control valve at a start of energization of the electromagnetic control valve as a start current value smaller by a first determined amount than an open/closed state change-over reference current value which is necessary for changing over a state of the electromagnetic valve and after the start of energization of the electromagnetic control valve, the control current gradually increases with a smaller increase inclination than an increase inclination of an increase control of the control current which gives priority to a control responsibility of the electromagnetic control valve and finishes a gradual increase of the control current applying to the electromagnetic control valve, when the control current exceeds a finish current value which is larger than the open/closed state change-over reference current value.
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公开(公告)号：US10029662B2
公开(公告)日：2018-07-24
申请号：US15128206
申请日：2015-01-08
Applicant: ADVICS CO., LTD. , TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Masaki Ninoyu , Takahiro Okano , Yoshio Masuda , Daisuke Nakata
Abstract: A vehicle brake device includes a pressure adjusting device wherein as the volume of a pilot chamber is changed by the movement of a piston and the flow rate of liquid flowing in and out of the pilot chamber increases, the amount of movement of the piston increases with reference to the piston position in an equilibrium state where the force corresponding to the pilot pressure and the force corresponding to the output pressure are balanced, whereby the flow rate of the liquid flowing in and out of an output chamber increases. A control device, when judged by a limitation necessity judging portion that the gradient of output pressure should be limited, implements at least one of pressure increasing gradient limit control for opening a pressure decreasing electromagnetic valve under pressure increasing control, or pressure decreasing gradient limit control for opening a pressure increasing electromagnetic valve under pressure decreasing control.
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公开(公告)号：US09969379B2
公开(公告)日：2018-05-15
申请号：US14812831
申请日：2015-07-29
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA , ADVICS CO., LTD.
Inventor： Masaki Nanahara , Masayasu Ohkubo , Kazutaka Noro , Masaki Ninoyu , Takahiro Okano
CPC classification number: B60T17/221 , B60T7/042 , B60T13/146 , B60T13/662 , B60T13/686 , G01M3/2876
Abstract: A method for detecting fluid leakage from a pressure-decrease valve in a hydraulic brake system having an ABS device including: a shutoff valve for shutting off supply of a working fluid from a fluid-pressure supply source to a brake device provided for a wheel; the pressure-decrease valve for discharging the working fluid from the brake device; a reservoir for storing the working fluid discharged from the pressure-decrease valve; and a return pump for returning the working fluid stored in the reservoir to a portion between the shutoff valve and the fluid-pressure supply source, the method including the steps of: activating the return pump in a state in which the hydraulic brake system is not in ABS operation, and detecting the fluid leakage from the pressure-decrease valve based on a variation in a pressure of the working fluid in the fluid-pressure supply source caused when the return pump is activated.
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公开(公告)号：US09902385B2
公开(公告)日：2018-02-27
申请号：US15100035
申请日：2014-11-28
Applicant: ADVICS CO., LTD.
Inventor： Takahiro Okano , Masaki Ninoyu
CPC classification number: B60T13/662 , B60T7/042 , B60T8/4077 , B60T11/20 , B60T13/146 , B60T13/686
Abstract: A vehicular braking device can shorten the time between pilot pressure input to a regulator and generation of servo pressure, and reduce product-by-product time variations for servo pressure generation. This vehicular braking device comprises: a servo pressure rising start time measurement unit that measures, in advance, a servo pressure rising start time which is the time from pilot pressure input to a first pilot chamber by opening a pressure increase valve to when a servo pressure starts to rise, and stores the servo pressure rising start time in a storage unit; a pilot pressure increase time calculation unit that calculates a pilot pressure increase time based on the servo pressure rising start time stored in advance in the storage unit; and a pre-fill control unit that increases the pilot pressure for the pilot pressure increase time by opening the pressure increase valve when brake pedal operation is detected.
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Patent Agency Ranking
公开(公告)号：US09505388B2
公开(公告)日：2016-11-29
申请号：US14317315
申请日：2014-06-27
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA , ADVICS CO., LTD.
Inventor： Yusuke Kamiya , Kiyoyuki Uchida , Masaki Ninoyu , Takahiro Okano
IPC: B60T13/122 , B60T11/228 , B60T11/16 , B60T7/04 , B60T13/14 , B60T13/66 , B60T13/68
CPC classification number: B60T11/228 , B60T7/042 , B60T8/4077 , B60T11/16 , B60T13/146 , B60T13/662 , B60T13/686 , Y10T137/7781
Abstract: A hydraulic brake system includes: a master cylinder including a pressurizing piston; a brake cylinder for a hydraulic brake operable by a hydraulic pressure in a front pressure chamber defined in front of the pressurizing piston; and a rear-hydraulic pressure controller connected to a rear chamber defined at a rear of the pressurizing piston. The rear-hydraulic pressure controller controls a hydraulic pressure in the rear chamber and includes: a regulator, operable by at least one of the hydraulic pressure in the front pressure chamber and a control pressure controlled electrically, for supplying an output hydraulic pressure to the rear chamber; and a master-pressure-operating-state detector configured to, when the output hydraulic pressure is greater than a threshold value, detect that the regulator is in a master-pressure operating state in which the regulator is operated by at least the hydraulic pressure in the front pressure chamber.
Abstract translation: 液压制动系统包括：主缸，包括加压活塞; 用于液压制动器的制动缸，其可通过限定在加压活塞前面的前压力室中的液压进行操作; 以及连接到限定在加压活塞的后部的后室的后液压压力控制器。 后液压压力控制器控制后室中的液压，并包括：调节器，其可通过前压力室中的至少一个液压和电控制的控制压力操作，用于将输出液压提供给后 房间 以及主压力操作状态检测器，其被配置为当所述输出液压大于阈值时，检测到所述调节器处于主压力操作状态，其中所述调节器至少通过液压 前压力室。
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公开(公告)号：US20150015059A1
公开(公告)日：2015-01-15
申请号：US14317315
申请日：2014-06-27
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA , ADVICS CO., LTD.
Inventor： Yusuke KAMIYA , Kiyoyuki Uchida , Masaki Ninoyu , Takahiro Okano
IPC: B60T11/228 , B60T11/16
CPC classification number: B60T11/228 , B60T7/042 , B60T8/4077 , B60T11/16 , B60T13/146 , B60T13/662 , B60T13/686 , Y10T137/7781
Abstract: A hydraulic brake system includes: a master cylinder including a pressurizing piston; a brake cylinder for a hydraulic brake operable by a hydraulic pressure in a front pressure chamber defined in front of the pressurizing piston; and a rear-hydraulic pressure controller connected to a rear chamber defined at a rear of the pressurizing piston. The rear-hydraulic pressure controller controls a hydraulic pressure in the rear chamber and includes: a regulator, operable by at least one of the hydraulic pressure in the front pressure chamber and a control pressure controlled electrically, for supplying an output hydraulic pressure to the rear chamber; and a master-pressure-operating-state detector configured to, when the output hydraulic pressure is greater than a threshold value, detect that the regulator is in a master-pressure operating state in which the regulator is operated by at least the hydraulic pressure in the front pressure chamber.
Abstract translation: 液压制动系统包括：主缸，包括加压活塞; 用于液压制动器的制动缸，其可通过限定在加压活塞前面的前压力室中的液压进行操作; 以及连接到限定在加压活塞的后部的后室的后液压压力控制器。 后液压压力控制器控制后室中的液压，并包括：调节器，其可通过前压力室中的至少一个液压和电控制的控制压力操作，用于将输出液压提供给后 房间 以及主压力操作状态检测器，其被配置为当所述输出液压大于阈值时，检测所述调节器处于主压力操作状态，其中所述调节器至少通过液压操作 前压力室。
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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
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.
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公开(公告)号：US10703348B2
公开(公告)日：2020-07-07
申请号：US15765595
申请日：2016-10-21
Applicant: ADVICS CO., LTD. , TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Takahiro Okano , Daisuke Nakata , Masaki Ninoyu
Abstract: The hydraulic pressure control includes a valve portion which adjusts a fluid flowing into or flowing out of a hydraulic pressure chamber, a state judging portion which judges whether or not a state of the hydraulic pressure chamber is in a state in which the actual pressure is increasing even the holding signal has been inputted to the valve portion and a control portion which executes a specific control which keeps the actual pressure to the hydraulic pressure within the dead zone when the state judging portion judges that the state of the hydraulic pressure chamber is in a state that the actual pressure fluctuates even the holding signal has been inputted to the valve portion.
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公开(公告)号：US10583815B2
公开(公告)日：2020-03-10
申请号：US15763235
申请日：2016-09-28
Applicant: Advics Co., Ltd. , Toyota Jidosha Kabushiki Kaisha
Inventor： Masaki Ninoyu , Takahiro Okano
Abstract: The hydraulic pressure control device controls a valve part for adjusting the inflow/outflow of a fluid into and out of a hydraulic pressure chamber formed in a braking device to control the actual hydraulic pressure of the fluid in the hydraulic pressure chamber, to a target hydraulic pressure of the actual hydraulic pressure and includes a determination unit which determines whether a response delay time of the actual hydraulic pressure is equal to or greater than a prescribed permitted delay time and an inflow/outflow quantity correction unit which executes increase correction processing in which the valve part is controlled to increase the inflow/outflow quantity of the fluid in the hydraulic pressure chamber when the determination unit has determined that the response delay time is equal to or greater than the permitted delay time.
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