公开(公告)号：US20180208170A1

公开(公告)日：2018-07-26

申请号：US15746225

申请日：2016-07-27

Applicant: ADVICS CO., LTD.

Inventor： Masatoshi HANZAWA ,  Tetsuaki TSUZUKI

IPC: B60T13/74 ,  F16D65/18 ,  B60T8/171 ,  B60T8/172 ,  B60T8/32 ,  F16D66/00

Abstract: An electric parking brake device generates pressing force by pressing friction materials against a brake disc by causing a piston to move by motor operation. A control device executes: parking processing wherein the motor increases the pressing force to an initial pressing force higher than a lower-limit pressing force; and re-drive processing wherein the motor is driven and the pressing force increased at a re-drive time, which is a predetermined time after the end of execution of parking processing. During parking processing, the control device uses one among the initial pressing force and the predetermined time, in addition to a pressing force decrease characteristic corresponding to an assumed temperature set for use in calculation, as a basis to calculate the other of the initial pressing force and the predetermined time such that the pressing force becomes equal to or less than the lower-limit pressing force at the re-drive time.

公开(公告)号：US20180201239A1

公开(公告)日：2018-07-19

申请号：US15744369

申请日：2016-07-12

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

Inventor： Yusuke NAKAGAWA ,  Yosuke OHMORI ,  Wataru IKE

IPC: B60T7/22 ,  B60T7/04 ,  B60T8/171 ,  B60T8/32 ,  G08G1/16

CPC classification number: B60T7/22 ,  B60T7/042 ,  B60T7/12 ,  B60T8/171 ,  B60T8/3255 ,  B60T2201/022 ,  B60T2220/04 ,  G08G1/16

Abstract: A vehicular collision avoidance control device includes: a collision avoidance control unit that receives a vehicle deceleration rate that is an actual deceleration rate of a traveling vehicle and obtains a first desired deceleration rate for avoiding collision with an obstacle based on the received vehicle deceleration rate, a relative distance to the obstacle, and a target relative distance; and a brake control unit that obtains a desired deceleration rate for controlling a brake device by performing first control based on the received vehicle deceleration rate and the first desired deceleration rate and performing second control based on the first desired deceleration rate and stops the first control upon detection of a brake operation performed by a driver.

公开(公告)号：US09937911B2

公开(公告)日：2018-04-10

申请号：US15112846

申请日：2015-01-29

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

Inventor： Masaki Ninoyu ,  Takahiro Okano ,  Yusuke Kamiya ,  Daisuke Nakata ,  Masaaki Komazawa

IPC: B60T13/66 ,  B60T8/1761 ,  B60T8/40 ,  B60T7/04 ,  B60T13/14 ,  B60T13/68

CPC classification number: B60T13/662 ,  B60T7/042 ,  B60T8/17616 ,  B60T8/4077 ,  B60T13/146 ,  B60T13/147 ,  B60T13/686

Abstract: A vehicle control device which is applicable to a vehicle brake device, controls the pressure increasing control valve and the pressure decreasing control valve so that an actual servo pressure detected by the servo pressure sensor becomes a target servo pressure and sets a control dead zone in which a control of the pressure increasing control valve and the pressure decreasing control valve is prohibited to be an area which has a first predetermined width from the target servo pressure when a normal braking operation is performed and sets the control dead zone to be an area which has a second predetermined width, wider than the first predetermined width when the brake actuator executes the braking control which accompanies a brake fluid pumping back control, wherein the brake fluid supplied to the wheel cylinder is returned to the master cylinder by pumping back operation of the built-in pump.

公开(公告)号：US09919687B2

公开(公告)日：2018-03-20

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

IPC: B60T8/40 ,  B60T7/04 ,  B60T1/10 ,  B60T13/14 ,  B60T13/66 ,  B60T13/68 ,  F16D61/00 ,  B60T8/42

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.

公开(公告)号：US20180029576A1

公开(公告)日：2018-02-01

申请号：US15549433

申请日：2016-01-29

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

Inventor： Tatsushi KOBAYASHI ,  Masaaki KOMAZAWA ,  Yusuke KAMIYA

IPC: B60T8/88 ,  B60T17/22 ,  B60T8/44 ,  B60T8/36

CPC classification number: B60T8/88 ,  B60T8/17 ,  B60T8/363 ,  B60T8/4077 ,  B60T8/44 ,  B60T8/48 ,  B60T8/94 ,  B60T17/18 ,  B60T17/221 ,  B60T2270/404 ,  B60T2270/82

Abstract: Provided is a brake device capable of detecting abnormality condition of a subject valve without using a wheel pressure sensor and the vehicle brake device includes a valve which is configured to open and close a fluid passage connected to the master chamber and at the same time which is a subject valve for a subject of failure judgement and an abnormality judging portion which is configured to judge whether or not the subject valve is in an abnormal state based on an advancement amount of the master piston accompanying an opening of the subject valve.

公开(公告)号：US20170349153A1

公开(公告)日：2017-12-07

申请号：US15539072

申请日：2015-12-17

Applicant: DENSO CORPORATION ,  ADVICS CO., LTD.

Inventor： Hironobu YAMASHITA ,  Takahiro YAMAGUCHI ,  Kennji FUJIWARA ,  Takashi MURAYAMA ,  Keita NAKANO ,  Aritomo NABETA

IPC: B60T8/48 ,  H02P1/18

Abstract: An increase in startup current supplied to a motor is suppressed at an initial stage of starting automatic braking control, while current supply to the motor is performed in a fully energized state after the automatic braking control is started. While output of the motor is increased by controlling the motor in the fully energized state so that a high braking force with high responsiveness is obtained, startup current is prevented from becoming excessive by performing high frequency control only at startup. Thus, decrease in battery voltage is minimized and thus the occurrence of malfunction is minimized in the control systems of various electrical components used in the vehicle.

公开(公告)号：US09796367B2

公开(公告)日：2017-10-24

申请号：US14349555

申请日：2013-01-25

Applicant: ADVICS CO., LTD.

Inventor： Yoshihiro Miyata ,  Yasuhiro Hineno ,  Keita Nakano ,  Takanori Iida

IPC: B60T13/14 ,  B60T7/04 ,  B60T13/66 ,  B60T13/68 ,  B60T8/48

CPC classification number: B60T13/148 ,  B60T7/042 ,  B60T8/4872 ,  B60T13/141 ,  B60T13/143 ,  B60T13/146 ,  B60T13/662 ,  B60T13/686

Abstract: A vehicle brake device includes a hydraulic pressure generating device, a valve device, a pump and an accumulation section forming an accumulation chamber connected to a fluid passage between the valve device and the hydraulic pressure generating device or to a master chamber. A dead band is set in which the change of force of the magnitude corresponding to the hydraulic pressure in the master chamber does not substantially act on a brake operating member. A characteristic representing the relation between the pressure and the brake fluid quantity in the accumulation chamber is set based on a characteristic representing the relation between the pressure and the brake fluid quantity in a wheel cylinder and the dead band so that, when brake fluid is flowing into and from the accumulation chamber, a force of the magnitude corresponding to the master chamber hydraulic pressure does not act on the brake operating member.

公开(公告)号：US09744952B2

公开(公告)日：2017-08-29

申请号：US15033560

申请日：2014-10-29

Applicant: YAMAHA HATSUDOKI KABUSHIKI KAISHA ,  ADVICS CO., LTD.

Inventor： Hiroaki Seto ,  Kunihide Ohashi ,  Takeshi Yamamura ,  Yoshinori Tsuji ,  Hideki Takada ,  Kunio Kajihara ,  Masato Terasaka ,  Yutaka Hamamoto

IPC: B60T8/1755 ,  B60T8/17 ,  B60T8/32 ,  B62K5/027 ,  B62K5/10 ,  B62K5/05 ,  B62K5/08 ,  B62L3/02 ,  B62K5/00

CPC classification number: B60T8/17554 ,  B60T8/1706 ,  B60T8/3225 ,  B60T2230/03 ,  B62K5/027 ,  B62K5/05 ,  B62K5/08 ,  B62K5/10 ,  B62K2005/001 ,  B62L3/023

Abstract: A brake system includes a brake activator which reduces, when a slipping condition of a right front wheel is detected based on a signal which is detected by a right detector, both braking forces on the right front wheel and a left front wheel to a lower level than a level of a braking force which is obtained as a result of operation of an input member and which reduces, when a slipping condition of the left front wheel is detected based on a signal which is detected by a left detector, both braking forces on the left front wheel and the right front wheel to a lower level than a level of a braking force which is obtained as a result of operation of the input member.

公开(公告)号：US09714015B2

公开(公告)日：2017-07-25

申请号：US14909019

申请日：2014-07-31

Applicant: ADVICS CO., LTD.

Inventor： Hiroki Saito

IPC: B60T8/17 ,  B60T8/36

CPC classification number: B60T8/17 ,  B60T8/36 ,  B60T8/3655

Abstract: A vehicle braking control device includes: an indicated-value-setting unit for setting an indicated current value, which relates to a differential pressure valve provided to a channel between a master cylinder and a wheel cylinder, to a value corresponding to a required differential pressure; and a depressurization-starting differential pressure acquisition unit for acquiring, as a depressurization-starting differential pressure, the differential pressure at the point in time when a pressurizing state for increasing the differential pressure caused by the differential pressure valve transitions to a depressurizing state for reducing the differential pressure caused by the differential pressure valve. The area between the depressurization-starting differential pressure and a boundary differential pressure is set as a depressurization-starting differential pressure area. When the depressurizing state is in effect and the required differential pressure is included in the depressurization-starting differential pressure area, the indicated-value-setting unit sets the slope of decrease of the indicated current value.

公开(公告)号：US09683584B2

公开(公告)日：2017-06-20

申请号：US14403054

申请日：2013-05-30

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

Inventor： Yoshio Masuda ,  Hiroaki Niino ,  Akira Sakai ,  Yasuji Mizutani ,  Kiyoyuki Uchida ,  Masaaki Komazawa ,  Kazutaka Noro ,  Yusuke Kamiya

IPC: F15B9/10 ,  B60T8/40 ,  B60T11/224 ,  F15B13/042 ,  B60T7/04 ,  B60T13/14 ,  B60T13/66 ,  B60T13/68

CPC classification number: F15B9/10 ,  B60T7/042 ,  B60T8/4077 ,  B60T11/224 ,  B60T13/146 ,  B60T13/662 ,  B60T13/686 ,  F15B13/0422 ,  F15B2211/528 ,  F15B2211/7051

Abstract: The brake device for a vehicle generates two master pressures by controlling one single servo pressure to accurately control braking force. The pressure increasing characteristic is set based on the first pressure increasing characteristic obtained from the relationship between the servo pressure and the first master pressure upon increasing the servo pressure and the second pressure increasing characteristic obtained from the servo pressure and the second master pressure. The pressure decreasing characteristic is set based on the first pressure increasing characteristic obtained from the relationship between the servo pressure and the first master pressure upon decreasing the servo pressure and the second pressure decreasing characteristic obtained from the servo pressure and the second master pressure. Thus, the total braking force of the brake device is the sum of a braking force generated by the first master pressure and a braking force generated by the second master piston.