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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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Применить Всего найдено 9127. Отображено 100.
10-06-2015 дата публикации

Система для сохранения разрежения

Номер: RU0000152530U1
Автор: Ральф Уэйн КАННИНГЭМ, Росс Дикстра ПЁРСИФУЛЛ, Русс Вильям ФЕРГЮСОН
Принадлежит: ФОРД ГЛОУБАЛ ТЕКНОЛОДЖИЗ, ЭлЭлСи

1. Система для сохранения разрежения, соединенная с: трансмиссией;тормозами транспортного средства;тормозной педалью; и содержащая:вакуумный усилитель тормозов, присоединенный к тормозной педали и в сообщении с тормозами транспортного средства; иконтроллер, содержащий исполняемые команды, хранимые в постоянной памяти, для ограничения потребления разрежения через вакуумный усилитель тормозов при переключении трансмиссии и при нажатии тормозной педали.2. Система по п. 1, в которой трансмиссия переключается из положения нейтрали или парковки на переднюю передачу.3. Система по п. 1, дополнительно содержащая дополнительные команды для ограничения потока воздуха в вакуумный усилитель тормозов при положении трансмиссии в положении парковки и при нажатии тормозной педали.4. Система по п. 1, дополнительно соединенная с двигателем и содержащая дополнительные команды для автоматического останова двигателя и ограничения потребления разрежения через вакуумный усилитель тормозов при остановке двигателя.5. Система по п. 1, дополнительно содержащая дополнительные команды для управления величиной разрежения в рабочей камере вакуумного усилителя тормозов на основании уклона дороги.6. Система по п. 1, дополнительно содержащая дополнительные команды для управления величиной разрежения в рабочей камере вакуумного усилителя тормозов на основании массы транспортного средства, при этом дополнительно содержащая дополнительные команды для ограничения потребления разрежения, когда трансмиссия находится на передней передаче и при нулевой скорости транспортного средства.7. Система по п. 1, дополнительно содержащая первый и в РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 152 530 U1 (51) МПК B60T 13/72 (2006.01) B60T 17/22 (2006.01) B60T 8/44 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ТИТУЛЬНЫЙ (21)(22) Заявка: ЛИСТ ОПИСАНИЯ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ 2014129184/11, 15.07.2014 (24) Дата начала отсчета срока действия патента: 15.07.2014 Приоритет(ы): (30) Конвенционный приоритет: ...

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Номер записи: 1
19-04-2012 дата публикации

Brake system for a vehicle and method for operating a brake system for a vehicle

Номер: US20120091788A1
Автор: Reinhard Weiberle, Timo Jahnz
Принадлежит: ROBERT BOSCH GMBH

A brake system for a vehicle includes: a brake activation element; an input piston displaceable by at least a predefined minimum actuator travel distance when the brake activation element is operated; an output piston to which a driver braking force is transmittable from the brake activation element via the displaced input piston such that an internal pressure in a piston-cylinder unit of the brake system is increased; a first brake booster; and a spring device which, when the brake activation element is operated for an actuator travel distance which is less than the minimum actuator travel distance, is deformed in such a way that transmission of the driver braking force to the output piston is prevented.

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Номер записи: 2
09-08-2012 дата публикации

Booster and brake apparatus using the same

Номер: US20120200147A1
Автор: Hiroshi Owada, Mitsuhiro Endo
Принадлежит: HITACHI AUTOMOTIVE SYSTEMS LTD

An input rod is operated by a brake pedal to introduce the air into a variable-pressure chamber through a control valve to propel a power piston, thereby advancing a primary piston to generate a brake fluid pressure in a master cylinder. A part of the reaction force from the fluid pressure is transmitted to the input rod through a reaction member. The primary piston is provided with an idle stroke in which no fluid pressure is generated, and the reaction force to be transmitted to a plunger is limited by a reaction force adjusting spring. In the region of the idle stroke, a fluid pressure is supplied to a wheel cylinder through a fluid pressure control unit to perform regenerative cooperative control, and a reaction force from a reaction spring is applied to the input rod.

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Номер записи: 3
06-09-2012 дата публикации

Vehicle control device and vehicle control method

Номер: US20120226402A1
Автор: Keiichi Minamiura
Принадлежит: Toyota Motor Corp

A control device for a vehicle includes: a charge control portion that adjusts an upper limit of charging power to a battery to prevent a negative electrode potential of the battery from dropping to a lithium reference potential, based on a charge/discharge history of the battery; a braking control portion that detects a sharing ratio between hydraulic braking force by a braking device and regenerative braking force for desired braking force according to a brake pedal depression amount so that a motor generator generates a regenerative braking force within a range of the adjusted upper limit of charging power; and a setting portion that variably sets, according to the hydraulic response rate detected by the detection portion, a degree of limitation of the upper limit when restricting charging current to the battery by restricting the upper limit.

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Номер записи: 4
27-09-2012 дата публикации

Motor vehicle braking system having a hydraulically actuated service braking system and an electormechanically actuated braking system

Номер: US20120245815A1
Автор: Heinz-Anton Schneider, Jürgen Balz
Принадлежит: Continental Teves AG and Co oHG

The invention relates to a motor vehicle brake system having a hydraulically actuatable service brake system and an electromechanically actuatable brake system, including an operating element HMI, in particular for activating a parking brake function, an electronic control device (EPB-ECU) for activating an electromechanical actuator of the electromechanically actuatable brake system, and an electrohydraulic control unit (HECU) associated with a service brake and serving to control or regulate hydraulically implemented service brake functions, driving stability functions and/or braking assistance functions. It is an aim of the invention to contribute to reducing the stress on parts or components of the brake system. It is proposed that an electronically controlled hydraulic pressure conditioning process is carried out in integrated brake calipers after hydraulic actuation of the brake, it being further provided that the electromechanical brake system generates additional application forces only after the hydraulic pressure conditioning process.

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Номер записи: 5
01-11-2012 дата публикации

Method of converting, storing and utilizing potential energy at a worksite and system using the same

Номер: US20120273285A1
Автор: Jeffrey E. Jensen, Larry M. Slone
Принадлежит: Caterpillar Inc

A method of utilizing potential energy at a worksite comprising providing an energy storage machine including an energy storage system at a first rendezvous height above a working area, coupling the energy storage machine to a first work machine, generating energy while commuting the energy storage machine and first work machine down the first height, storing the generated energy in the energy storage system and decoupling the energy storage machine and the first work machine at a second rendezvous point adjacent to the working area.

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Номер записи: 6
06-12-2012 дата публикации

Vacuum booster for a vehicular brake

Номер: US20120304849A1
Автор: Kentaro Yoshizawa, Kiyoaki Tanizawa
Принадлежит: Nissin Kogyo Co Ltd

In a vacuum booster for a vehicular brake, at least one of flat front attachment portion and flat rear attachment portion has a central disc portion which is concentric with a fitting cylindrical portion and plural side disc portions which are disposed around the central disc portion so as to be continuous with the central disc portion and to be spaced from each other. Bolts are inserted through at least a pair of side disc portions of the plural side disc portions.

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Номер записи: 7
20-12-2012 дата публикации

Mechanical bypass valve for regenerative air brake module

Номер: US20120319463A1
Автор: Jeffrey M. Lloyd, Ken Flory, Kranti Kiran Manga, Michael Marcetti
Принадлежит: Individual

An air braking system for a vehicle blends regenerative and foundation braking during low deceleration conditions in an effective and controlled manner. The braking system also includes a mechanical override that bypasses system electronics in response to an aggressive brake request such that treadle circuit pressure is sent directly to a brake relay circuit to actuate vehicle brakes.

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Номер записи: 8
28-02-2013 дата публикации

Descent control device

Номер: US20130048422A1
Автор: Dan S. Smith, Gregory A. Hartman
Принадлежит: Rapid Egress Descent Systems Ltd

A descent control device for controlling rotational motion of an object includes: at least one drive assembly for rotationally engaging the rotating object; a first substantially planar ferromagnetic moving element in rotationally locked engagement with at least one drive assembly and comprising at least one recess formed in a surface thereof having at least one magnet fixedly disposed therein; a second substantially planar ferromagnetic moving element in rotationally locked engagement with at least one drive assembly, and comprising at least one recess formed in a surface thereof having at least one magnet fixedly disposed therein; and at least one conducting plate disposed proximate the first and second moving elements. A magnetic field may be induced by rotational movement of the first or second moving element relative to at least one conducting plate in a direction to oppose acceleration of at least one drive assembly as it rotationally engages the object.

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Номер записи: 9
28-02-2013 дата публикации

Braking Display System And Method

Номер: US20130049945A1
Автор: Dale Scott Crombez, Derek Hartl, Ryan Skaff
Принадлежит: FORD GLOBAL TECHNOLOGIES LLC

A vehicle information display may include a split braking gauge for conveying information relating to braking operation and efficiency to assist drivers in maximizing energy capture during braking in vehicle with regenerative braking systems. The split braking gauge may incorporate a side-by-side or stacked configuration for conveying both regenerative braking and friction braking values. The split braking gauge may include fixed thresholds or boundaries associated with dynamic threshold values that can change based on current vehicle operating conditions.

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Номер записи: 10
07-03-2013 дата публикации

Braking System for an Off-Highway Machine Involving Electric Retarding Integrated with Service Brakes

Номер: US20130057053A1
Автор: Cameron T. Lane, Jill Trumper, Michael D. Staub, Tom N. Brooks, William J. Tate
Принадлежит: Caterpillar Inc

The disclosure describes, in one aspect, a method of braking a machine having an electric drive configuration. The electric drive configuration includes at least one electric retarding system connected to a first set of wheels. Additionally, a first friction brake system connects to the first set of wheels to provide a braking output torque. A second friction brake system connects to a second set of wheels and provides a second braking output torque. The system calculates and applies a braking ratio between the electric and friction braking systems based upon both user controls and conditions encountered.

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Номер записи: 11
14-03-2013 дата публикации

METHOD AND BRAKE SYSTEM FOR CONTROLLING THE DRIVING STABILITY OF A VEHICLE

Номер: US20130062930A1
Автор: Bremeier Volker, Muntu Matthias
Принадлежит: Continental Teves AG & Co. oHG

The invention relates to a method in which the driving stability of a vehicle is controlled, wherein a yaw rate difference is influenced by an additional yaw moment which is generated at least partially by building up braking torque independently of the driver at one or more wheels. According to the invention, the braking torque which influences the additional yaw moment is variably apportioned between the front axle and the rear axle of the vehicle in an oversteering situation. 112.-. (canceled)13. A method in which the driving stability of a vehicle is controlled , wherein a yaw rate difference is influenced by an additional yaw moment which is generated at least partially by building up braking torque independently of the driver at one or more wheels , wherein the braking torque which influences the additional yaw moment is variably apportioned between the front axle and the rear axle of the vehicle in oversteering situations.14. The method as claimed in claim 13 , wherein a fixed apportionment of the braking torque between the front and rear axles of the vehicle is selected if the change in the yaw rate difference over time exceeds a predefined threshold value.15. The method as claimed in claim 13 , wherein the portion of the braking torque at the rear axle of the vehicle is selected as a function of the magnitude of the yaw rate difference.16. The method as claimed in claim 15 , wherein a fixed apportionment of the braking torque between the front and rear axles of the vehicle is selected if the yaw rate difference exceeds a predefined first threshold value.17. The method as claimed in claim 16 , wherein braking torque is requested only at the rear axle if the yaw rate difference undershoots a predefined second threshold value.18. The method as claimed in claim 17 , wherein the portion of the braking torque which is requested at the rear axle is reduced in proportion to the amount by which the yaw rate difference exceeds the second threshold value.19. The ...

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Номер записи: 12
28-03-2013 дата публикации

Regenerative Braking System for a Hybrid Electric Vehicle and a Corresponding Method

Номер: US20130076113A1
Автор: Andreasson Björn, Hjelmér Christer, Pihl Mattias
Принадлежит: V2 Plug-in Hybrid Vehicle Partnership Handelsbolag

A method and system for controlling regenerative braking of a hybrid electric vehicle. The regenerative braking system has a driver-operable brake pedal, a hydraulically actuated friction brake for at least one front wheel, an anti-lock braking system hydraulically connected to said hydraulically actuated friction brake, and an electrically actuated friction brake for at least one rear wheel. The regenerative braking system further comprises an electric machine connected to said at least one rear wheel and capable of performing regenerative braking of said at least one rear wheel, and an electronic control unit that controls the stability of said hybrid electric vehicle, wherein said regenerative braking system is configured to provide increased braking torque of said front hydraulically actuated friction brake by means of said anti-lock braking system for compensating a decreased or limited rear wheel braking torque initiated by said electronic control unit. 1. A regenerative braking system for a hybrid electric vehicle comprising:a braking system having a brake pedal suitable for being operated by a driver, a hydraulically actuated friction brake at least one front wheel, an anti-lock braking system hydraulically connected to said hydraulically actuated friction brake, and an electrically actuated friction brake at least one rear wheel;an electric machine connected to said at least one rear wheel and capable of performing regenerative braking of said at least one rear wheel; andan electronic control unit that controls the stability of said hybrid electric vehicle, wherein said regenerative braking system is configured to provide increased braking torque of said front hydraulically actuated friction brake by means of said anti-lock braking system for compensating a decreased or limited rear wheel braking torque initiated by said electronic control unit.2. A system according to claim 1 , wherein rear wheel braking torque is provided by at least one of said electric ...

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Номер записи: 13
04-04-2013 дата публикации

VACUUM BOOSTER, BRAKE SYSTEM EQUIPPED WITH THE VACUUM BOOSTER, AND METHOD OF MANUFACTURING PLATE PLUNGER FOR VACUUM BOOSTER

Номер: US20130082513A1
Автор: Yamaga Hiroyuki
Принадлежит: BOSCH CORPORATION

A plate plunger that determines a servo ratio SR of a vacuum booster pertaining to the present invention has, on a corner portion between its outer peripheral surface and its surface that opposes a reaction disc a servo ratio determination surface that is formed by an inclined surface and determines the servo ratio. The servo ratio determination surface comprises a reaction disc contact surface that determines the servo ratio and a reaction disc non-contact surface Additionally, a variety of different servo ratios are obtained by performing secondary processing such as cutting or grinding on just the servo ratio determination surface to change the outer peripheral diameter of the reaction disc contact surface 1. A vacuum booster comprising at least:an input shaft to which an input is applied;a control valve that is operated by the input shaft;a power piston that operates on atmospheric air introduced by the operation of the control valve;an output shaft that puts out an output in which the input has been boosted by a servo ratio by the operation of the power piston;a reaction disc to which a reaction force of the output of the output shaft is transmitted and which elastically deforms; anda plate plunger with which the reaction disc that has elastically deformed comes into contact to transmit the reaction force to the input shaft and which determines the servo ratio,wherein the plate plunger has, on a corner portion between an outer peripheral surface and a surface that opposes the reaction disc, a servo ratio determination surface that is formed by an inclined surface and determines the servo ratio, andthe servo ratio determination surface comprises a reaction disc contact surface that determines the servo ratio and a reaction disc non-contact surface.2. The vacuum booster according to claim 1 , wherein the plate plunger is configured by a plate plunger base material in which an outer peripheral diameter of the reaction disc contact surface has been primarily ...

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Номер записи: 14
11-04-2013 дата публикации

Method and apparatus for controlling a brake system for a motor vehicle having a brake device

Номер: US20130090824A1
Автор: Bjoern-Hendrik Reinhard, Thomas Garbe
Принадлежит: Dr Ing HCF Porsche AG

A method is provided for controlling a brake system of a motor vehicle having a brake device ( 40 ) with a hydraulic brake unit ( 41 ) and a recuperation brake unit ( 42 ). The method includes calculating (S 1 ) a hydraulic brake force characteristic curve (B 2 ) of the hydraulic brake unit ( 41 ) on the basis of at least one detected characteristic of the brake system, selecting (S 2 ) a generator-based brake force characteristic curve (G 1 -G 4 ) of the recuperation brake unit ( 42 ) on the basis of a predefined criterion and as a function of the calculated hydraulic brake force characteristic curve (B 2 ), and controlling (S 3 ) the hydraulic brake unit ( 41 ) and the recuperation brake unit ( 42 ) in accordance with a detected degree of actuation of the brake pedal ( 10 ), the calculated hydraulic brake force characteristic curves (B 2 ), and the selected generator-based brake force characteristic curve (G 1 -G 4 ).

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Номер записи: 15
18-04-2013 дата публикации

Hybrid vehicles

Номер: US20130096752A1
Автор: Alex J. Severinsky, Theodore Louckes
Принадлежит: PAICE LLC

A hybrid vehicle comprises an internal combustion engine, a traction motor, a starter motor, and a battery bank, all controlled by a microprocessor in accordance with the vehicle's instantaneous torque demands so that the engine is run only under conditions of high efficiency, typically only when the load is at least equal to 30% of the engine's maximum torque output. In some embodiments, a turbocharger may be provided, activated only when the load exceeds the engine's maximum torque output for an extended period; a two-speed transmission may further be provided, to further broaden the vehicle's load range. A hybrid brake system provides regenerative braking, with mechanical braking available in the event the battery bank is fully charged, in emergencies, or at rest; a control mechanism is provided to control the brake system to provide linear brake feel under varying circumstances.

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Номер записи: 16
02-05-2013 дата публикации

Booster assembly for vehicle

Номер: US20130104728A1
Автор: Chang Bok Ko, Young Jun SON
Принадлежит: Mando Corp

A booster assembly for a vehicle capable of reducing the noise and manufacturing cost thereof, the booster assembly including an input rod configured to reciprocate in linkage with a brake pedal, a control plunger configured to reciprocate in linkage with the input rod, and a boosting piston configured to reciprocate in linkage with the control plunger or reciprocate in linkage with a valve body, wherein the boosting piston directly transmits an output, which is generated at the booster, to the master cylinder without being separated.

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Номер записи: 17
23-05-2013 дата публикации

VEHICLE BRAKE DEVICE AND METHOD OF CONTROLLING THE SAME

Номер: US20130127236A1
Автор: Hakiai Motomu, Takasaki Yoshiyasu
Принадлежит: BOSCH CORPORATION

An object of the invention is to prevent abnormal noise from being generated when the pressure of brake fluid supplied to a brake caliper is reduced. 1. A vehicle brake device that includes first and second hydraulic brakes generating a hydraulic brake force and a regenerative brake generating a regenerative brake force and divides a braking force into the hydraulic brake force and the regenerative brake force , the vehicle brake device comprising:a regulating valve that is provided between the first and second hydraulic brakes and continuously regulates the flow rate of brake fluid flowing to the second hydraulic brake from the first hydraulic brake; anda pressure reducing valve that reduces the pressure of the brake fluid supplied to the second hydraulic brake,wherein an opening of the regulating valve is continuously increased and the pressure reducing valve is opened, when the hydraulic brake force of the first hydraulic brake is reduced.2. The vehicle brake device according to claim 1 , wherein the second hydraulic brake does not generate a braking force when the hydraulic brake force of the first hydraulic brake is reduced.3. The vehicle brake device according to claim 1 , wherein the pressure reducing valve is a solenoid valve that is intermittently opened and closed claim 1 , and is maintained open when the hydraulic brake force of the first hydraulic brake is reduced.4. The vehicle brake device according to claim 1 , further comprising:another pressure reducing valve that reduces the pressure of brake fluid supplied to the first hydraulic brake,wherein the another pressure reducing valve is maintained closed when the regenerative brake force is to be increased.5. The vehicle brake device according to claim 1 , wherein the pressure reducing valve of the second hydraulic brake supplies the brake fluid claim 1 , which is supplied to the second hydraulic brake claim 1 , to an accumulator when reducing the pressure of the brake fluid supplied to the second ...

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Номер записи: 18
23-05-2013 дата публикации

Vehicle Brake Device

Номер: US20130127240A1
Автор: ISHIDA Satoshi, Noro Kazutaka, Sakata Yasunori, Suzuki Yoshinori
Принадлежит: ADVICS CO., LTD.

A vehicle brake device is provided with a master piston which is driven to generate a master cylinder pressure. The device includes a pressure accumulation portion that accumulates the brake fluid under pressure; a servo pressure generation portion that is configured to be able to generate the servo pressure using the brake fluid in the pressure accumulation portion regardless of the operation of the brake operation member; brake fluid consumption correlative value detection means for detecting a brake fluid consumption correlative value relating to a consumption of the brake fluid in the pressure accumulation portion; and failure detection means for driving the master pistons only by the servo pressure using the servo pressure generation portion in a state where the brake operation member is not operated, and detecting a failure of a master system, based on a brake fluid consumption correlative value detected by the brake fluid consumption correlative value detection means at that time. 1. A vehicle brake device in which master piston is driven by any one of a force corresponding to an operation force of a brake operation member and a force corresponding to a servo pressure in a servo chamber to generate a master cylinder pressure , the device comprising:a pressure accumulation portion that accumulates the brake fluid under pressure;a servo pressure generation portion that is configured to be able to generate the servo pressure using the brake fluid in the pressure accumulation portion regardless of the operation of the brake operation member;brake fluid consumption correlative value detection means for detecting a brake fluid consumption correlative value relating to a consumption of the brake fluid in the pressure accumulation portion; andfailure detection means for driving the master piston only by the servo pressure using the servo pressure generation portion in a state where the brake operation member is not operated, and detecting a failure of a master system ...

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Номер записи: 19
23-05-2013 дата публикации

Vehicle Brake Device

Номер: US20130127241A1
Автор: Sakata Yasunori
Принадлежит: ADVICS CO., LTD.

A vehicle brake device includes a failure detection means for driving the master piston only by the operation force of the brake operation member along with the operation of the brake operation member, thereby to detect a failure of a master system, when a master cylinder pressure correlation value correlated to the master cylinder pressure is less than a predetermined value, in a case where an operation amount of the brake operation member is a predetermined amount or in a case where the operation force of the brake operation member is a predetermined force; and a driving control means for driving the master piston by force corresponding to the servo pressure in the servo chamber generated by the servo pressure generation portion, when the operation amount of the brake operation member is greater than a predetermined amount, or when the operation force of the brake operation member is greater than a predetermined force, in the operation of the brake operation member in which the failure detection means detects the failure of the master system. 1. A vehicle brake device which includes servo pressure generation portions configured to generate a servo pressure in a servo chamber , and in which master piston is driven by any one of a force corresponding to an operation force of a brake operation member and a force corresponding to a servo pressure in the servo chamber to generate a master cylinder pressure ,the vehicle brake device comprising:a failure detection means for detecting a failure of a master system, when a master cylinder pressure correlation value correlated to the master cylinder pressure is less than a predetermined value, in a case where the master piston is driven only by the operation force of the brake operation member along with the operation of the brake operation member and an operation amount of the brake operation member is a predetermined amount or the operation force of the brake operation member is a predetermined force; anddriving control ...

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Номер записи: 20
30-05-2013 дата публикации

VEHICLE BRAKE DEVICE AND METHOD OF CONTROLLING VEHICLE BRAKE DEVICE

Номер: US20130134767A1
Автор: Hakiai Motomu, Takasaki Yoshiyasu
Принадлежит: BOSCH CORPORATION

There is provided a vehicle brake device that includes hydraulic brake means for generating a hydraulic brake force and regenerative brake means for generating a regenerative brake force and distributes the hydraulic brake force and the regenerative brake force for a driver-requested brake force. The hydraulic brake means includes a pressure reducing valve that reduces hydraulic pressure of wheel cylinders. The vehicle brake device includes hydraulic brake control means for maintaining the pressure reducing valve open while the driver-requested brake force is covered by only the regenerative brake force. The hydraulic brake control means does not open the pressure reducing valve when hydraulic pressure is present in the wheel cylinders. 1. A vehicle brake device that includes a hydraulic brake for generating a hydraulic brake force and a regenerative brake for generating a regenerative brake force and distributes the hydraulic brake force and the regenerative brake force for a driver-requested brake force , the hydraulic brake including a pressure reducing valve that reduces hydraulic pressure of wheel cylinders , the vehicle brake device comprising:a hydraulic brake control for maintaining the pressure reducing valve open while the driver-requested brake force is covered by only the regenerative brake force,wherein the hydraulic brake control does not open the pressure reducing valve when hydraulic pressure is present in the wheel cylinders.2. The vehicle brake device according to claim 1 , wherein the hydraulic brake includes an accumulator communicating with the pressure reducing valve claim 1 , and brake fluid is stored in the accumulator when the pressure reducing valve is opened.3. The vehicle brake device according to claim 1 , further comprising:a booster; andregenerative brake control for stopping the generation of the regenerative brake force in association with jump-in characteristics of the booster.4. The vehicle brake device according to claim 3 , ...

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Номер записи: 21
30-05-2013 дата публикации

VEHICLE BRAKING SYSTEM

Номер: US20130134768A1
Автор: HOTANI Yuki, ITO Yuki, Sato Shinichi
Принадлежит: HONDA MOTOR CO., LTD.

A vehicle braking system includes a master cylinder for producing an upstream hydraulic pressure corresponding to an operation given to a brake operation part, a shut-off valve provided between the master cylinder and a wheel cylinder, a hydraulic-pressure source for producing a downstream hydraulic pressure between the shut-off valve and the wheel cylinder in a close instruction receiving condition of the shut-off valve, and a controller for setting a target value of the downstream hydraulic pressure based on an operation amount and controlling the downstream hydraulic pressure based on the target value. According to the vehicle braking system, a driver is prevented from feeling discomfort through a brake operation without an increase in a power consumption of a shut-off valve provided between the master cylinder and the wheel cylinder. 1. A vehicle braking system comprising:a master cylinder for producing an upstream hydraulic pressure in response to an operation given to a brake operation part;an operation amount detector for detecting an operation amount of the brake operation part;a shut-off valve provided between the master cylinder and a wheel cylinder;a hydraulic-pressure source for producing a downstream hydraulic pressure between the shut-off valve and the wheel cylinder in an close instruction receiving condition of the shut-off valve; anda controller for setting a control target value in response to the downstream hydraulic pressure based on the operation amount and controlling the downstream hydraulic pressure based on the control target value, wherein an upstream-hydraulic-pressure detector-estimator for detecting or estimating the upstream hydraulic pressure; and', 'a regulator for adjusting the control target value in response to the operation amount or the upstream hydraulic pressure to regulate a pressure difference between the upstream hydraulic pressure and the downstream hydraulic pressure., 'the controller comprises2. The vehicle braking system ...

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Номер записи: 22
06-06-2013 дата публикации

BRAKE BOOSTER AND METHOD FOR ITS OPERATION

Номер: US20130140877A1
Автор: Mahnkopf Dirk
Принадлежит:

A regulatable brake booster and to a method and a control unit for operating same. Using the method for operating the brake booster, as well as the embodiment of the brake booster, a reaction on a driver may be avoided or reduced by an offset of the brake pedal or by a changed operating force in response to a change in the supporting force. The change in the supporting force is particularly an adjustment of the braking effect of an hydraulic braking system to the braking effect of a regenerative braking system. 118-. (canceled)19. A method for operating a regulatable brake booster of an hydraulic braking system , the method comprising:applying, using the brake booster, a supporting force to an output element of the brake booster; andestablishing the supporting force to be applied as a function of (i)at least one information with respect to at least one elastic element, which is located between an input element of the brake booster and the output element, (ii) at least one information being determined with regard to a pressure-volume relationship of the hydraulic braking system, particularly a p-V characteristics curve, and (iii) an input force applied by the driver, which is applied to the input element and the supporting force is set.20. The method of claim 19 , wherein the supporting force claim 19 , in response to an input force applied by the driver claim 19 , is set so that a reaction on the driver is reduced in response to a change in the supporting force.21. The method of claim 19 , wherein the supporting force is set so that an infinitesimally small change in the supporting force leads to a vanishing displacement of the input element of the brake booster claim 19 , particularly to a displacement of zero.22. The method of claim 19 , wherein the supporting force is set so that claim 19 , upon a finite change in the supporting force claim 19 , an additional force which has to be applied to hold the input element at the same position claim 19 , is minimal claim ...

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Номер записи: 23
13-06-2013 дата публикации

Vacuum Brake Booster Having an Assembly-Friendly Chamber Arrangement and Method for Assembling Such a Vacuum Brake Booster

Номер: US20130145927A1
Автор: Giese Hans-Martin, Larequi David Lopez
Принадлежит: LUCAS AUTOMOTIVE GMBH

The invention relates to a vacuum brake booster having a chamber arrangement for producing a servo force that supports a brake actuating force, wherein the chamber arrangement comprises a housing, in which a working chamber is separated from a vacuum chamber by a movable wall, wherein the housing has a first housing shell and a second housing shell, which are or can be connected to each other in a sealing manner in a connection area, wherein a flexible section of the movable wall is arranged in a sealing manner in the connection area, and wherein the housing shells of the housing are penetrated by at least two fastening bolts in order to fasten the vacuum brake booster to a vehicle chassis. For easier assembly, at least one of the fastening bolts is provided with an engagement formation, with which one of the housing shells can be brought into engagement during the assembly, and thus said housing shell can be permanently locked in a predetermined position relative to the other housing shell. 110121214222426141618203026201618143210. A vacuum brake booster () having a chamber arrangement () for producing a servo force which supports a brake actuating force , wherein the chamber arrangement () comprises a housing () in which a working chamber () is separated from a vacuum chamber () by a movable wall () , wherein the housing () has a first housing shell () and a second housing shell () , which are or can be connected to one another in sealing manner in a connecting region () , wherein a flexible portion () of the movable wall () is arranged in sealing manner in the connecting region () , and wherein the housing shells ( , ) of the housing () are penetrated by at least two fastening bolts () for fastening the vacuum brake booster () to a vehicle chassis ,{'b': 32', '46', '50', '16', '18, 'characterised in that at least one of the fastening bolts () is provided with an engagement formation (, ) with which one of the housing shells () can be brought into engagement during ...

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Номер записи: 24
20-06-2013 дата публикации

Method for operating a regenerative braking system of a vehicle and control unit for a regenerative braking system

Номер: US20130154343A1
Автор: Michael Kunz, Stefan Stengert
Принадлежит: ROBERT BOSCH GMBH

A method for operating a regenerative braking system includes increasing a generator braking torque and establishing a setpoint variable with regard to a brake fluid volume to be shifted from a brake master cylinder and/or at least one brake circuit to at least one storage volume, taking into account the increased generator braking torque and a predefined hydraulic efficiency characteristic curve; reducing the generator braking torque and transferring the actual brake fluid volume previously transferred to the at least one storage volume at least partially from the at least one storage volume to the at least one brake circuit; ascertaining at least one reaction variable with regard to a hydraulic reaction of the braking system; and reestablishing the hydraulic efficiency characteristic curve of the braking system, at least taking into account the at least one ascertained reaction variable. A control unit for a regenerative braking system is also described.

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Номер записи: 25
20-06-2013 дата публикации

ELECTRIC VEHICLE BRAKE CONTROL DEVICE

Номер: US20130154344A1
Автор: Imamura Masayuki
Принадлежит: NISSAN MOTOR CO., LTD.

A vehicle brake control device includes a master cylinder, a plurality of wheel cylinders, a VDC brake hydraulic pressure unit, a motor controller and an integration controller. When a brake operation is carried out, the integration controller carries out a regenerative brake control which achieves a target deceleration. Additionally, a motor suspension control is carried out which suspends a drive status of the VDC motor when the vehicle velocity is less than a first prescribed value. Furthermore, when the vehicle velocity exceeds a second prescribed value and the brake operation is carried out while the VDC motor is in the suspended status, the value of the target deceleration is set to a lower value than the value of the target deceleration which the driver requests, and a motor reactivation control is carried out which reactivates the VDC motor. 1. A vehicle brake control device for an electrically driven vehicle , comprising:a master cylinder that generates a master cylinder pressure in accordance with a braking operation;a wheel cylinder is disposed at each front and rear wheels to supply a hydraulic pressure braking power to a corresponding one of the front and rear wheels;a brake hydraulic pressure actuator interposed between the master cylinder and the wheel cylinders, and the brake hydraulic pressure actuator including a hydraulic pressure pump driven by a pumping motor and a differential valve for controlling the pressure difference between a wheel cylinder pressure and the master cylinder pressure during operation of the pumping motor;a regenerative brake force control unit is connected to an electric drive motor that is coupled to a drive wheel, the regenerative brake force control unit controlling a regenerative brake force that is generated by the electric drive motor;a regenerative cooperative brake control unit that achieves a target deceleration at the braking operation by a sum of a base hydraulic pressure portion of the master cylinder pressure ...

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Номер записи: 26
27-06-2013 дата публикации

Brake System for Motor Vehicles

Номер: US20130162013A1
Автор: Stefan A. Drumm
Принадлежит: Continental Teves AG and Co oHG

A brake system for motor vehicles, which in a “brake by wire” mode, can be activated both by the vehicle driver and also independently of the vehicle driver, which is operated preferentially in the “brake by wire” operating mode and can be operated in a fall-back mode. A pedal force actuating element connected to a brake pedal is guided in a retaining piston forming a retaining chamber. Dividing piston devices interact with the retaining piston and connected to vehicle wheel brakes. The first dividing piston and the second dividing piston surface are formed on a first dividing piston portion and the first dividing piston surface, together with a third dividing piston surface formed on a second dividing piston portion form an intermediate chamber connected to electrohydraulic pressure generating device. A pressure modulation valve enables both a build-up of pressure in and also a discharge of pressure from the intermediate chamber.

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Номер записи: 27
04-07-2013 дата публикации

BRAKE SYSTEM FOR A MOTOR VEHICLE AND METHOD FOR OPERATING A BRAKE SYSTEM

Номер: US20130169032A1
Автор: Linhoff Paul
Принадлежит: Continental Teves AG & Co.oHG

A brake system for a motor vehicle includes on at least one wheel, an electric-regenerative brake and a friction brake that can be hydraulically actuated by a first generator of brake pressure using a fluid, wherein the friction brake can be connected via an actuatable inlet valve to the first generator of brake pressure and via a first actuatable outlet valve to a pressure accumulator, so that a volume of fluid applied by the first generator of brake pressure can be diverted via the first outlet valve into the pressure accumulator. The first generator of brake pressure can be connected to the pressure accumulator via a further hydraulic connection having a second actuatable outlet valve. A method for operating a brake system is also disclosed. 115.-. (canceled)16. A brake system for a motor vehicle , which comprises , on at least one wheel , an electric-regenerative brake and a friction brake that can be hydraulically actuated by a first means for generating a brake pressure using a fluid , wherein the friction brake can be connected via an actuatable inlet valve to the first means for generating a brake pressure and via a first actuatable outlet valve to a pressure accumulator , so that a volume of fluid applied by the means for generating a brake pressure can be diverted via the first outlet valve into the pressure accumulator , wherein the first means for generating a brake pressure can be connected to the pressure accumulator via a further hydraulic connection having a second actuatable outlet valve.17. The brake system as claimed in claim 16 , wherein the further hydraulic connection branches off between the first means for generating a brake pressure and the inlet valve.18. The brake system as claimed in claim 16 , wherein a further actuatable valve is arranged between the first means for generating a brake pressure and the inlet valve claim 16 , and that the first means for generating a brake pressure can be connected to the pressure accumulator via the ...

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Номер записи: 28
18-07-2013 дата публикации

BRAKE SYSTEM FOR A VEHICLE AND METHOD FOR OPERATING A BRAKE SYSTEM FOR A VEHICLE

Номер: US20130181506A1
Автор: Jahnz Timo, Weiberle Reinhard
Принадлежит:

A brake system includes: a brake actuating element; a first piston-cylinder unit having a first piston displaceable by the brake actuating element actuated by at least a predefined minimum actuation such that a first internal pressure in the first piston-cylinder unit is increased; at least one wheel brake cylinder having a brake pressure which is increased using the increased first internal pressure; a first brake booster; and a second piston-cylinder unit having a second piston displaceable by the first brake booster so that a second internal pressure in the second piston-cylinder unit is increased, and to which the at least one wheel brake cylinder is hydraulically connected such that the brake pressure of the at least one wheel brake cylinder is increased by the increased second internal pressure. 115-. (canceled)16. A brake system for a vehicle , comprising:a brake actuating element;a first piston-cylinder unit, wherein the brake actuating element is disposed at the first piston-cylinder unit in such a way that a first piston of the first piston-cylinder unit is displaced by actuation of the brake actuating element by at least a predefined minimum actuation so that a first internal pressure in the first piston-cylinder unit is increased;at least one wheel brake cylinder hydraulically connected to the first piston-cylinder unit in such a way that a brake pressure of the at least one wheel brake cylinder is increased using the increased first internal pressure in the first piston-cylinder unit;a first brake booster; anda second piston-cylinder unit, wherein the first brake booster is disposed at the second piston-cylinder unit in such a way that a second piston of the second piston-cylinder unit is displaced by the first brake booster so that a second internal pressure in the second piston-cylinder unit is increased, and wherein the at least one wheel brake cylinder is hydraulically connected to the second piston-cylinder unit in such a way that the brake ...

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Номер записи: 29
01-08-2013 дата публикации

VEHICLE CONTROL APPARATUS

Номер: US20130192937A1
Автор: Furuyama Hiroshi
Принадлежит: Hitachi Automotive Systems, Ltd.

A vehicle control apparatus includes: a first braking force generating section configured to actuate, by a hydraulic pressure, wheel cylinders; a second braking force generating section configured to be mechanically regulated to provide the braking force to the one of the wheels; a braking force control switching section configured to automatically switch the second braking force generating section from a non-actuation state to an actuation state when a predetermined condition is satisfied in an actuation state of the first braking force generating section and in the non-actuation state of the second braking force generating section, and to switch the first braking force generating section to the non-actuation state; and a braking force characteristic control section configured to control a braking force characteristic generated by the first braking force generating section, and relating to the switching operation of the braking force control switching section. 1. A vehicle control apparatus comprising:a first braking force generating section configured to actuate, by a hydraulic pressure, wheel cylinders which are mounted on a vehicle, which are connected through hydraulic pipes with a master cylinder, and which are provided, respectively, to a plurality of wheels, and thereby to generate a braking force to the wheels;a second braking force generating section which is provided to one of the plurality of the wheels, and which is configured to be mechanically regulated to provide the braking force to the one of the wheels;a braking force control switching section configured to automatically switch the second braking force generating section from a non-actuation state to an actuation state when a predetermined condition is satisfied in an actuation state of the first braking force generating section and in the non-actuation state of the second braking force generating section, to decrease the hydraulic pressure of the first braking force generating section, and ...

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Номер записи: 30
15-08-2013 дата публикации

Vacuum Brake Force Booster with Reduced Noise Emission and Method for Manufacturing a Vacuum Brake Force Booster of Said Type

Номер: US20130205985A1
Автор: Eick Ruediger, Frey Karl-Heinz
Принадлежит: LUCAS AUTOMOTIVE GMBH

A vacuum brake force booster for a motor vehicle brake system comprising: a force input member which is movable along a longitudinal axis and which is or can be coupled to a brake pedal, a control valve arrangement which can be actuated by the force input member, a chamber arrangement which is arranged in a housing and which has at least one working chamber and at least one vacuum chamber separated from one another by means of a movable wall and which has a force output member for transmitting an actuating force, wherein the at least one working chamber can be connected selectively to a vacuum source or to the atmosphere, wherein the control valve arrangement has a control valve housing which is coupled to the at least one movable wall for conjoint movement therewith, wherein the control valve arrangement has a force-transmitting arrangement which has a degree of axial play and which is arranged in the force transmission path between the force input member and the force output member. Here, for noise reduction, it is provided that at least one component of the force-transmitting arrangement is manufactured from magnetic or ferromagnetic material and is subjected to a permanently applied magnetic field. 2. The vacuum brake booster according to claim 1 , Wherein the force transmitting arrangement has claim 1 , viewed in an axial direction from the force input member to the force output member claim 1 , a transmitting piston claim 1 , a contact element and a rubber-elastic reaction disc abutting against the force output member.3. The vacuum brake booster according to claim 1 ,wherein the force transmitting arrangement has a travel limiting Element.4. The vacuum brake booster according to claim 3 ,wherein one of the components transmitting piston, contact element, rubber-elastic reaction disc and travel limiting element is magnetized and at least one other of the transmitting piston, contact element, rubber-elastic reaction disc and travel limiting element is of ...

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Номер записи: 31
15-08-2013 дата публикации

METHOD FOR OPERATING A BRAKE SYSTEM, BRAKE SYSTEMS IN WHICH THE METHOD IS CARRIED OUT AND MOTOR VEHICLES COMPRISING SAID BRAKE SYSTEMS

Номер: US20130211685A1
Автор: Albrich von Albrichsfeld Christian, Führer Jochen, Karner Jürgen, Ullrich Thorsten
Принадлежит: Continental Teves AG & Co. oHG

A method for the operation of a brake system having two brake circuits, with a recuperative brake, in particular an electrical generator, a master brake cylinder and a brake pedal simultaneously achieve optimized use of the regenerative braking and a constant braking experience for the driver with the highest safety requirements. When there is a braking demand by the driver with an associated desired braking torque and a first condition is met, at least one outlet valve is opened and brake fluid is conducted with an associated volume of brake fluid into at least one reservoir and the at least one outlet valve is then closed if a second condition is met. The first condition is met if a braking variable corresponding to the braking demand is not less than a specified minimum value. The second condition is met if the volume of brake fluid has flowed into the reservoirs. 116.-. (canceled)17. A method for the operation of a brake system having two brake circuits , with a recuperative brake , comprising an electrical generator , a master brake cylinder and a brake pedal , wherein at least one outlet valve is opened and brake fluid is conducted into at least one reservoir with an associated volume of brake fluid in the event of a driver's braking demand with an associated desired braking torque and if a first condition is met , and then the at least one outlet valve is closed if a second condition is met , wherein the first condition is met if a braking variable corresponding to the braking demand is not less than a specified minimum value , and wherein the second condition is met if the volume of brake fluid has flowed into the reservoirs.18. The method as claimed in claim 17 , wherein the first condition is only met if the change against time of the braking variable does not exceed a specified maximum value.19. The method as claimed in claim 17 , wherein the first condition is only met if the braking torque (Tq_rcap) available from the generator is greater than a ...

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Номер записи: 32
22-08-2013 дата публикации

Vehicle Brake System for a Motor Vehicle and Method for Controlling the Vehicle Brake System When the Parking Brake Function is Activated

Номер: US20130213746A1
Автор: Poertzgen Gregor, Versmold Heiner
Принадлежит: LUCAS AUTOMOTIVE GMBH

A vehicle brake system, comprising a hydraulically controllable disk brake device, which has an electromechanical actuating device for activating a parking brake function, wherein the vehicle brake system has a hydraulic circuit having a hydraulic pressure source and controllable hydraulic functional elements in order to hydraulically control the disk brake device according to a service brake action of a driver or according to an automatic activation of a driving assistance system, wherein the vehicle brake system further comprises a control device in order to control the electromechanical actuating device according to a parking brake action of the driver or according to an automatic activation of the parking brake function. In order to avoid overload states the control device is designed to control at least one of the hydraulic functional elements in such a way that, before the parking brake function is activated by controlling the electromechanical actuating device, a hydraulic volume currently acting on the disk brake device in order to produce a hydraulic pressure that causes a service brake action can be hydraulically isolated. 1. A vehicle brake system with a hydraulically controllable disk brake device , which has an electromechanical actuating device for activating a parking brake function , wherein the vehicle brake system has a hydraulic circuit having a hydraulic pressure source and controllable hydraulic functional elements in order to hydraulically control the disk brake device according to a service brake action of a driver or according to an automatic activation , wherein the vehicle brake system further comprises a control device in order to control the electromechanical actuating device according to a parking brake action of the driver or according to an automatic activation of the parking brake function ,wherein the control device is designed to control at least one of the hydraulic functional elements in such a way that, before the parking brake ...

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Номер записи: 33
22-08-2013 дата публикации

BRAKE CONTROL APPARATUS

Номер: US20130218435A1
Автор: Nakamura Eiji
Принадлежит: TOYOTA JIDOSHA KABUSHIKI KAISHA

A brake control apparatus is provided with a frictional braking unit configured to generate frictional braking force, a regenerative braking unit configured to generate regenerative braking force, a fluid pressure control valve configured to adjust an operating fluid pressure, and a controlling unit configured to execute regenerative control to cover entire required braking force required by a driver by the regenerative braking force and executing switching control to cover the required braking force by the frictional braking force in place of the regenerative braking force by adjusting to increase the operating fluid pressure by the fluid pressure control valve when a predetermined condition is satisfied. By covering the entire required braking force by regenerative braking force and executing the switching control to adjust to increase the operating fluid pressure by the fluid pressure control valve to cover the required braking force when a predetermined condition is satisfied. 1. A brake control apparatus , comprising:a frictional braking unit configured to generate frictional braking force by supplying operating fluid to a wheel cylinder provided on each wheel of a vehicle to press a frictional member against the wheel;a regenerative braking unit configured to generate regenerative braking force by power regeneration to a rotating electrical machine, which drives the wheel;a fluid pressure control valve configured to adjust an operating fluid pressure supplied from a fluid pressure source to a wheel cylinder side of each wheel; anda controlling unit configured to execute regenerative control to cover entire required braking force required by a driver by the regenerative braking force and executing switching control to cover the required braking force by the frictional braking force in place of the regenerative braking force by adjusting to increase the operating fluid pressure by the fluid pressure control valve when a predetermined condition is satisfied, ...

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Номер записи: 34
29-08-2013 дата публикации

Brake Control Apparatus

Номер: US20130221733A1
Автор: MATSUOKA Atsushi
Принадлежит: Hitachi Automotive Systems, Ltd.

A brake control apparatus includes a first brake fluid passage connecting a master cylinder to a wheel cylinder. A second brake fluid passage is connected to the first brake fluid passage. A first pump pressurizes brake fluid from the master cylinder and sends the pressurized brake fluid to the wheel cylinder through the second brake fluid passage. A third brake fluid passage is branched from the first brake fluid passage, and connected to the first pump. A fourth brake fluid passage is branched from the third brake fluid passage, and connected to the first brake fluid passage. A pressure regulator reservoir is disposed in the fourth brake fluid passage. A second pump sends brake fluid from the pressure regulator reservoir to the wheel cylinder by discharging to the first brake fluid passage. 1. A brake control apparatus comprising:a first brake fluid passage hydraulically connecting a master cylinder to a wheel cylinder, wherein the master cylinder generates a brake fluid pressure in response to driver's braking operation, and wherein the brake fluid pressure acts on the wheel cylinder;a second brake fluid passage hydraulically connected to a connecting portion of the first brake fluid passage;a first pump configured to pressurize brake fluid from the master cylinder and send the pressurized brake fluid to the wheel cylinder through the second brake fluid passage;a third brake fluid passage branched from a branch portion of the first brake fluid passage, and hydraulically connected to the first pump;a fourth brake fluid passage branched from a branch portion of the third brake fluid passage, and hydraulically connected to the first brake fluid passage;a pressure regulator reservoir disposed in the fourth brake fluid passage; anda second pump configured to send brake fluid from the pressure regulator reservoir to the wheel cylinder by discharging to the first brake fluid passage.2. The brake control apparatus as claimed in claim 1 , further comprising a switching ...

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Номер записи: 35
19-09-2013 дата публикации

INTEGRATED ELECTRONIC HYDRAULIC BRAKE SYSTEM

Номер: US20130241273A1
Автор: Kim Hyun Jun
Принадлежит:

An integrated electronic hydraulic brake system provided with an actuator including a master cylinder and a pedal simulator, an electronic stability control (ESC) and a hydraulic power unit (HPU) in a single unit. 1. An integrated electronic hydraulic brake system for vehicles comprising:an integrated hydraulic control device comprising a master cylinder to generate a fluid pressure by a pedal effort of a brake pedal, a reservoir coupled to an upper part of the master cylinder so as to store oil, two hydraulic circuits each connected to two wheels, an accumulator to store a predetermined level of pressure, a flow control valve and a pressure reducing valve that are connected to each of the two hydraulic circuits so as to control a pressure being transmitted from the accumulator to wheel cylinders installed on the respective wheels, a pedal simulator connected to the master cylinder to provide a reaction force of the brake pedal, and a simulation valve installed on a path connecting the pedal simulator to the reservoir; anda power source unit comprising a pump to draw the oil from the reservoir and discharge the drawn oil to the accumulator to form a pressure at the accumulator, and a motor to drive the pump,wherein the power source unit is provided as a separate unit from the integrated hydraulic control device so as to separate operating noise, and the integrated hydraulic control device is connected to the power source unit through an external pipe, andwherein the pedal simulator is configured to fill oil therein through the simulation valve.2. The integrated electronic hydraulic brake system for vehicles of claim 1 , further comprising a simulation check valve provided between the pedal simulator and the simulation valve claim 1 , wherein a pressure at a rear end of the pedal simulator according to the pedal effort of the brake pedal is transmitted only through the simulation valve claim 1 , and at the time of releasing of the pedal effort of the brake pedal ...

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Номер записи: 36
03-10-2013 дата публикации

BRAKE APPARATUS

Номер: US20130257140A1
Автор: ENDO Mitsuhiro, KOSHIMIZU Naganori, OGIWARA Takato
Принадлежит: Hitachi Automotive Systems, Ltd.

A controller controls a hydraulic control device to generate a target braking force corresponding to the stroke of a brake pedal by adjusting a controlled hydraulic braking force portion generated by the hydraulic control device on the basis of the relationship with a master hydraulic braking force portion generated from the brake hydraulic pressure in a master cylinder and a regenerative braking force portion generated by a regenerative brake device. The regenerative brake device maximizes the regenerative braking force portion before the stroke of the brake pedal reaches an idle stroke, and thereafter, the hydraulic control device starts braking by the controlled hydraulic braking force portion. When the stroke of the brake pedal reaches the idle stroke, the master cylinder starts braking by the master hydraulic braking force portion. 1. A brake apparatus comprising:a regenerative brake device applying a regenerative braking force to a wheel of a vehicle by generating electric power from rotation of the wheel according to a depressed position of a brake pedal;a hydraulic pressure generating device supplying a hydraulic fluid to a wheel cylinder when the brake pedal is depressed to at least a predetermined brake pedal position; anda pump mechanism delivering the hydraulic fluid from the hydraulic pressure generating device to the wheel cylinder by a pump;wherein the pump mechanism has already supplied the hydraulic fluid to the wheel cylinder when the brake pedal is depressed beyond a maximum regenerative braking pedal depressed position at which the regenerative brake device generates a maximum regenerative braking force, and wherein the predetermined brake pedal position is where the brake pedal is depressed beyond the maximum regenerative braking pedal depressed position.2. The brake apparatus of claim 1 , wherein the hydraulic pressure generating device transmits a reaction force from a hydraulic pressure generated therein to the brake pedal after the brake ...

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Номер записи: 37
17-10-2013 дата публикации

BRAKE BOOSTER AND METHOD FOR OPERATING A BRAKE BOOSTER

Номер: US20130269337A1
Автор: Mahnkopf Dirk
Принадлежит:

A brake booster includes an input element actuatable by a driver, an actuator for generating a support force, an output element to which an input or support force may be applied and via which an actuating force may be applied to a piston of a brake master cylinder, and a force transmission unit having elastic properties, situated between the input element and the actuator, and the output element, and transmitting the input and/or support forces to the output element. An air gap, which in idle mode is smaller or larger than a desired air gap, is provided between the input element and the force transmission unit. A method for operating the brake booster includes generating a support force prior to a braking intent to be anticipated or immediately after detection of a braking intent, in a time span before or immediately after detection of an actuation of the input element. 111-. (canceled)12. A brake booster , comprising:an input element which is actuatable by a driver,an actuator for generating a support force,an output element, to which an input force or the support force may be applied by the input element and/or the actuator and via which an actuating force may be applied to a piston of a brake master cylinder, anda force transmission unit having elastic properties, which is situated between the input element and the actuator on one end and the output element on an other end and which transmits the input force and/or the support force to the output element,wherein an air gap, which in idle mode is smaller or larger than a desired air gap at a beginning of a braking operation, is provided between the input element and the force transmission element.13. A brake booster , comprising:an input element which is actuatable by a driver,an actuator for generating a support force,an output element, to which an input force or the support force may be applied by the input element and/or the actuator and via which an actuating force may be applied to a piston of a brake master ...

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Номер записи: 38
31-10-2013 дата публикации

VACUUM BRAKE BOOSTER

Номер: US20130284012A1
Автор: SAKAI Tomoyasu, YASUI Yoshiyuki
Принадлежит: ADVICS CO., LTD.

In a vacuum brake booster, a valve mechanism having a negative pressure valve which communicates and cuts off between a negative pressure chamber and a variable pressure chamber according to a retractable movement of the plunger with respect to a valve body, and an atmosphere valve which communicates and cuts off between the variable pressure chamber and the atmosphere is assembled in a shaft hole of a valve body. In addition, the plunger and the key member are assembled in the shaft hole. In addition, in the vacuum brake booster, when the valve body is in the forward moving position and the plunger is moved rearward from the forward moving position, a protrusion tilting and holding the key member with respect to the valve body is provided. 1. A vacuum brake booster comprising:a movable partition wall which defines a forward negative pressure chamber and a rearward variable pressure chamber within a housing;a valve body which is retractably assembled in the housing and connected to the movable partition wall inside the housing;a valve mechanism having a negative pressure valve which is assembled inside a shaft through hole included in the valve body and which communicates and cuts off between the negative pressure chamber and the variable pressure chamber, and an atmosphere valve which communicates and cuts off between the variable pressure chamber and the atmosphere;a plunger which configures a portion of the valve mechanism and which is retractable with respect to the valve body in an axial direction, thereby integrally moving with an input member;a reaction member which is assembled inside the shaft through hole forward from the plunger such that a front end portion of the plunger and a front end portion of the valve body are engageable with its rear surface;an output member of which a rear end portion engages with a front surface of the reaction member and which is movable with respect to the valve body in the axial direction;a key member which is able to engage ...

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Номер записи: 39
07-11-2013 дата публикации

System and method for controlling a brake system in a vehicle

Номер: US20130297164A1
Автор: Andy Chuan Hsia, Dale Scott Crombez, Scott J. Lauffer
Принадлежит: FORD GLOBAL TECHNOLOGIES LLC

A method for controlling a brake system in a vehicle includes using a first brake pedal map when the vehicle has a first load; the first brake pedal map allows a first predetermined non-friction braking torque to be reached. The method further includes using a second brake pedal map allowing a second predetermined non-friction braking torque, lower than the first predetermined non-friction braking torque, to be reached. The second brake pedal map is used when the vehicle has a second load lower than the first load.

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Номер записи: 40
21-11-2013 дата публикации

BRAKE BOOSTER AND METHOD FOR OPERATING A BRAKE BOOSTER

Номер: US20130305706A1
Автор: Mahnkopf Dirk
Принадлежит:

A brake booster includes an input element actuatable by a driver, an actuator for generating a support force, an output element to which an input or support force may be applied and through which an actuating force may be applied to a piston of a brake master cylinder, a force transmission unit having elastic properties, situated between the input element and the actuator, and the output element, and transmitting the input and/or support forces to the output element, and a preload unit acting on the force transmission unit to apply a force couple to the force transmission unit when the brake booster is in idle mode. A method for operating the brake booster includes generating a support force prior to a braking intent to be anticipated or immediately after detection of a braking intent, in a time span before or immediately after detection of an actuation of the input element. 115to . (canceled)16. A brake booster , comprising:an input element which is actuatable by a driver,an actuator for generating a support force,an output element, to which an input force or the support force may be applied by the input element and/or the actuator and through which an actuating force may be applied to a piston of a brake master cylinder,a force transmission unit having elastic properties, which is situated between the input element and the actuator on one end and the output element on an other end and which transmits the input force and/or the support force to the output element, anda preload unit, which acts upon the force transmission unit such that it applies a force couple to the force transmission unit when the brake booster is in idle mode.17. The brake booster as recited in claim 16 , wherein the actuator is configured as a pneumatic claim 16 , a hydraulic claim 16 , an electrohydraulic claim 16 , an electromechanical or an electrothermal actuator.18. The brake booster as recited in claim 16 , wherein the force transmission unit is configured such that a deviation of a ...

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Номер записи: 41
05-12-2013 дата публикации

FIXING STRUCTURE FOR REINFORCEMENT PLATE AND TIE ROD-TYPE BRAKE BOOSTER HAVING THE SAME

Номер: US20130319218A1
Автор: SON Young Jun
Принадлежит:

A tie rod-type brake booster including a casing provided with a front cell and a rear cell, the front cell and the rear cell sealingly joining to each other, a tie rod caulked to the rear cell through the casing, a reinforcement plate to closely contact an inner surface of the front cell to enhance rigidity of the casing, the reinforcement plate being provided with a through hole penetrated by the tie rod, and a support member formed at a penetration portion of the front cell penetrated by the tie rod to fix the reinforcement plate, wherein the support member comprises a bent portion bent from the penetration portion of the front cell, and a pressing portion perpendicularly extending from the bent portion with respect to an axial direction of the tie rod. 1. A tie rod-type brake booster to produce a large braking force using a small force , comprising:a casing provided with a front cell and a rear cell, the front cell and the rear cell sealingly joining to each other;a tie rod caulked to the rear cell through the casing;a reinforcement plate to closely contact an inner surface of the front cell to enhance rigidity of the casing, the reinforcement plate being provided with a through hole penetrated by the tie rod; anda support member formed at a penetration portion of the front cell penetrated by the tie rod to fix the reinforcement plate,wherein the support member is provided with a bent portion bent from the penetration portion of the front cell, and a pressing portion perpendicularly extending from the bent portion with respect to an axial direction of the tie rod.2. The tie rod-type brake booster according to claim 1 , wherein the pressing portion presses a rear surface of the reinforcement plate through the through hole of the reinforcement plate.3. The tie rod-type brake booster according to claim 1 , wherein the bent portion bent from the penetration portion of the front cell has a diameter corresponding to a diameter of the tie rod.4. A tie rod-type brake ...

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Номер записи: 42
05-12-2013 дата публикации

METHOD FOR SETTING THE ACTUATING FORCE APPLIED BY A PARKING BRAKE

Номер: US20130325278A1
Автор: Bieltz Karsten, Hauber Simon
Принадлежит:

In a method for setting the clamping force applied by a parking brake, which is generated by an electromechanical brake device and additionally by a hydraulic brake device as needed, the hydraulic pressure is ascertained, and the pressure is assigned a pressure reference path which is compared with an actuator path. 111-. (canceled)12. A method for setting a clamping force applied by a parking brake , which is at least partially generated by an electromechanical brake device having an electric actuator and additionally by a hydraulic brake device as needed , a hydraulic pressure being supportively active at a brake piston when the hydraulic brake device is actuated , the brake piston being adjusted by the electric actuator and a total clamping force including an electromechanical clamping force and a hydraulic clamping force , the method comprising:ascertaining the hydraulic pressure, andassigning the hydraulic pressure a pressure reference path which is compared with an actuator path ascertained from a motor state variable of the actuator, the total clamping force being provided with aid of the electromechanical clamping force in an event that the pressure reference path and the actuator path deviate significantly from each other.13. The method as recited in claim 12 , wherein the actuator path corresponds to a free travel between a reference point and a force increase point of the actuator.14. The method as recited in claim 13 , wherein the reference point coincides with a stopping point of the actuator in a retracted out-of-operation state.15. The method as recited in claim 13 , wherein the force increase point of the actuator is ascertained from a current claim 13 , a voltage and/or a rotational speed of the actuator.16. The method as recited in claim 12 , wherein an electric brake motor is used as the actuator.17. The method as recited in claim 12 , wherein the pressure reference path is ascertained from a free travel of the actuator and a differential movement ...

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Номер записи: 43
12-12-2013 дата публикации

Method for operating a regenerative braking system of a vehicle and control unit for a regenerative braking system of a vehicle

Номер: US20130328386A1
Автор: DROTLEFF Dirk, Kunz Michael, STRENGERT Stefan
Принадлежит: ROBERT BOSCH GMBH

A method/controller for operating a vehicle regenerative braking system by operating in a first braking mode, in which a generator braking torque of a generator is not zero and is equal to a first regenerative portion predefined for the first mode, and controlling the system out of the first mode into a second braking mode having a second regenerative portion, which is smaller than the first portion, so that brake fluid is pumped out of a storage volume of the system into at least one wheel brake cylinder and/or at least one brake circuit of the system via at least one brake fluid delivery mechanism; by activating the delivery mechanism via a setpoint delivery output variable, which is established/predefined for a setpoint brake pressure having a setpoint pressure rise which increases over time, so that an actual brake pressure having an actual pressure rise increase over time is built up. 1. A method for operating a regenerative braking system of a vehicle , the method comprising:operating the braking system in a first braking mode in which a generator braking torque of a generator of the braking system is not equal to zero and is equal to a first regenerative portion, predefined for the first braking mode, of a total setpoint braking torque, which is predefined by a driver of the vehicle and/or an adaptive cruise control; andcontrolling the braking system out of the first braking mode into a second braking mode, having a second regenerative portion, which is smaller than the first regenerative portion, so that at least one brake fluid delivery mechanism of the braking system is activated in such a way that brake fluid is pumped from a storage volume of the braking system into at least one wheel brake cylinder and/or at least one brake circuit of the braking system via the at least one activated brake fluid delivery mechanism; andtriggering the at least one brake fluid delivery mechanism using a setpoint delivery output variable, which is established or predefined ...

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Номер записи: 44
19-12-2013 дата публикации

Method for setting the clamping force exerted by a parking brake

Номер: US20130333988A1
Автор: Karsten Bieltz, Simon Hauber
Принадлежит: ROBERT BOSCH GMBH

In a method for setting the clamping force exerted by a parking brake, which is generated at least partially by an electromechanical braking device and, if needed, in supplementary fashion by a hydraulic braking device, in the provision of the hydraulic clamping force, a boost pressure to be generated in the hydraulic braking device is increased with respect to a switch-off pressure at the switch-off time that corresponds to the hydraulic clamping force.

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Номер записи: 45
09-01-2014 дата публикации

BRAKE DEVICE FOR VEHICLE

Номер: US20140008965A1
Автор: HOTANI Yuki, ITO Yuki
Принадлежит: HONDA MOTOR CO., LTD.

A brake device for a vehicle is provided in which when a slave cylinder generates a brake fluid pressure that is commensurate with the actual amount of operation of a brake pedal by a driver in a state in which a master cut valve is closed and a fluid path connecting a master cylinder to the slave cylinder is cut off, a wheel cylinder is actuated by the brake fluid pressure. Since deterioration determination means determines a leak in the downstream of the slave cylinder based on the actual amount of actuation of the slave cylinder detected by a slave cylinder stroke sensor and the actual brake fluid pressure generated by the slave cylinder and detected by a fluid pressure sensor, it is possible to rapidly determine a leak in the downstream of the slave cylinder. 1. A brake device for a vehicle comprising{'b': 12', '11', '12', '42', '26', '27', '30', '31', '11', '42', '26', '27', '30', '31', '11', '42', '32', '33', '11', '26', '27', '30', '31, 'an actual operation amount detection device (Sd) that detects an actual amount of operation of a brake pedal () by a driver, a master cylinder () that generates a fluid pressure corresponding to the actual amount of operation of the brake pedal (), a brake actuator () that is driven according to the actual amount of operation, and a wheel cylinder (, , , ) that is actuated by a brake fluid pressure generated by the master cylinder () or the brake actuator (), the wheel cylinder (, , , ) being capable of being actuated independently from the fluid pressure generated by the master cylinder () by actuation of the brake actuator () in a state in which a cut-off valve (, ) for cutting off communication between the master cylinder () and the wheel cylinder (, , , ) is closed, wherein'}the brake device comprises{'b': '42', 'an actual actuation amount detection device (Se) that detects an actual amount of actuation of the brake actuator (),'}{'b': '42', 'an actual brake fluid pressure detection device (Sb, Sc) that detects an actual ...

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Номер записи: 46
16-01-2014 дата публикации

PRESSURE TRANSMISSION DEVICE FOR A VEHICLE, POWER-ASSISTED BRAKING SYSTEM AND METHOD

Номер: US20140015309A1
Автор: Mayer Jochen
Принадлежит:

A pressure transmission device for a power-assisted braking system of a vehicle; at its inlet, the pressure transmission device being connectible in a hydraulically operative manner to a master brake cylinder of the power-assisted braking system, and at its outlet, the pressure transmission device being connectible in a hydraulically operative manner to a wheel brake cylinder of the power-assisted braking system; the pressure transmission device including an accumulator and a linkage, which transmits a pressure difference between the inlet and the outlet to the accumulator and stores it in this. 121-. (canceled)22. A pressure transmission device for a power-assisted braking system of a vehicle , comprising:an inlet, the inlet of the pressure transmission device being connectible in a hydraulically operative manner to a wheel brake cylinder of the power-assisted braking system;an outlet, the at least one of the pressure transmission devices being connectible in a hydraulically operative manner to a wheel brake cylinder of the power-assisted braking system;an accumulator; anda linkage which transmits a pressure difference between the inlet and the outlet to the accumulator and stores the pressure difference in the accumulator.23. The pressure transmission device as recited in claim 22 , wherein at least one of: i) the inlet has a first cylinder having a first piston which is guided in the first cylinder and is movable in a first displacement direction claim 22 , and to which a first pressure is applied claim 22 , and ii) the outlet has a second cylinder having a second piston claim 22 , which is guided in the second cylinder and is movable in a second displacement direction claim 22 , and to which a second pressure is applied.24. The pressure transmission device as recited in claim 23 , wherein the linkage has a stationary adjusting spindle running perpendicularly to the first displacement direction of the first piston and at least one transmission rod claim 23 , ...

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Номер записи: 47
16-01-2014 дата публикации

PARKING BRAKE CONTROL DEVICE

Номер: US20140015310A1
Автор: Hanzawa Masatoshi, KONDO Kazuma
Принадлежит: ADVICS CO ., LTD.

When an abnormality is occurring in a main braking device for service brake, a parking brake control device determines whether the abnormality is a single system failure or a dual system failure and whether to execute an auxiliary lock control that generates a parking brake force by controlling a parking brake device. The parking brake control device then sets, in accordance with a mode of failure determined, a wheel on which the auxiliary lock control is to be executed. 1. A parking brake control device adopted in a vehicle brake system including a main braking device and a parking brake device ,wherein: the main braking device includes a service brake and an actuator, the service brake boosting an operating force of a brake operating member using a booster based on an engine negative pressure and generating a master cylinder pressure inside a master cylinder based on the boosted operating force, while also generating a brake force for each of wheels by generating, based on the master cylinder pressure, a wheel cylinder pressure in a wheel cylinder of each of the wheels that are connected, respectively, to two systems of brake lines; the actuator controls the wheel cylinder pressure of the service brake; andthe parking brake device electrically generating a parking brake force, the parking brake control device comprising:auxiliary control means for executing auxiliary control in which auxiliary lock control that controls the parking brake device and generates a parking brake force and auxiliary release control that releases the parking brake force are performed, and thus a target brake force in accordance with an operation amount of the brake operating member is generated using the brake force generated by the main braking device and the parking brake force;wherein abnormality determination means for determining whether an abnormality is occurring in the main braking device,', 'auxiliary lock determination means for determining, when an abnormality is determined by ...

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Номер записи: 48
23-01-2014 дата публикации

Vehicle brake system and method of operating the same

Номер: US20140025271A1
Автор: Brandon C. Pennala, Jason D. Fahland, Patrick J. Monsere
Принадлежит: GM GLOBAL TECHNOLOGY OPERATIONS LLC

A vehicle brake system and method that are designed to improve the driver braking experience by compensating for the effects that humidity and temperature can have on brake performance. According to one embodiment, the method determines if a braking event is underway and, if so, it measures humidity and brake temperature. With this information, the method is able to compensate for anticipated changes in the coefficient of friction (n) of one or more brake components, such as brake pads or rotors, and to provide a modified brake command signal accordingly.

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Номер записи: 49
30-01-2014 дата публикации

Brake Booster with Position-Dependent Pressure Equalization

Номер: US20140026556A1
Автор: David Lopez Larequi, Hans Martin Giese
Принадлежит: LUCAS AUTOMOTIVE GMBH

A brake booster for a motor vehicle brake system, comprises a force input element that is or can be connected to a brake pedal, a chamber arrangement with a working chamber and a vacuum chamber that are separated from one another by a movable wall, and a control device with a control valve, by which the working chamber can be optionally connected to the vacuum chamber or to the surrounding atmosphere as a result of a displacement of the force input element, wherein the control valve has a control valve housing, which is coupled to the movable wall and in which the force input element is guided in a displaceable manner against the action of a return spring together with a control piston, and wherein the control valve further comprises a valve element that is optionally prestressed into sealed abutment on a first valve seat provided on the control valve housing or into sealed abutment on a second valve seat provided on the control piston of the control valve by a tension spring. In order to reduce the actuating force, a pneumatic function chamber can be closed in a sealing manner by the valve element and can be optionally connected to the vacuum chamber or to the surrounding atmosphere according to a current actuating position of the force input element.

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Номер записи: 50
30-01-2014 дата публикации

Brake System for Motor Vehicles

Номер: US20140028084A1
Автор: Hans-Jörg Feigel, Harald Biller, Marco Beisier, Peter Stauder
Принадлежит: Continental Teves AG and Co oHG

A motor vehicle brake system operable in a brake-by-wire and fallback modes. The system includes a brake pedal ( 1 ), a master cylinder ( 2 ), a reservoir ( 4 ), a travel simulator ( 3 ), an electrically controllable pressure source ( 5 ), isolation valves ( 23 a, 23 b ) pumps ( 32 a, 32 b ) and a low-pressure accumulator ( 14 a, 14 b ), an inlet valve ( 6 a - 6 d ) and an outlet valve ( 7 a - 7 d ) for each wheel brake ( 8, 9, 10, 11 ), valves ( 34 a, 34 b; 134 a, 134 b ) connected to the pumps ( 32 a, 32 b ), and a control and regulation unit ( 110, 210 ). A valve arrangement ( 23 a, 23 b ) establishes for each brake circuit (I, II) a connection from the pressure chamber ( 17, 18 ) of the master cylinder ( 2 ) to the modulator admission pressure line ( 13 a, 13 b; 113 a, 113 b ) and disconnects the connection when unenergized, the valve arrangement ( 23 a, 23 b ) preventing the pressure source ( 5 ) from being subjected to pressure from the pressure chambers ( 17, 18 ).

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Номер записи: 51
06-02-2014 дата публикации

Brake actuation unit for a motor vehicle brake system and motor-pump unit for providing a vacuum for a brake actuation unit of a motor vehicle brake system

Номер: US20140035354A1
Автор: Holger Marschner, Martin Christov, Martin Semsch, Michael Wirtz, Rudolf Platzer
Принадлежит: Continental Teves AG and Co oHG

The invention relates to a brake actuation unit for a motor vehicle brake system, a vacuum brake booster and a motor pump unit which is provided for supplying a vacuum and comprises a pump connected to the vacuum brake booster and an electric motor driving the pump. According to the invention, an additional sound absorbing element is provided in the connection between the vacuum brake booster and the pump in order to lower the sound level in the vehicle interior.

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Номер записи: 52
13-02-2014 дата публикации

BRAKE SYSTEM AND METHOD OF CONTROLLING THE SAME

Номер: US20140042800A1
Автор: KIM Won-Seo
Принадлежит:

There is provided a brake system for performing regenerative braking and friction braking to brake a rotating body, the brake system including: a manipulation part configured to provide a brake input; a regenerative braking unit configured to perform regenerative braking; a friction braking unit configured to perform friction braking; and a control unit configured to control the brake system, wherein the friction braking unit includes: a friction working part configured to brake a rotating body by friction; a pneumatic line system configured to operate the friction working part; a first valve part connected to the pneumatic line system; and a second valve part connected to the pneumatic line system and connected in parallel to the first valve part. 1. A brake system comprising:a manipulation part configured to provide a brake input;a regenerative braking unit configured to perform regenerative braking;a friction braking unit configured to perform friction braking; anda control unit configured to control the brake system,wherein the friction braking unit comprises:a friction working part configured to brake a rotating body by friction;a pneumatic line system configured to operate the friction working part;a first valve part connected to the pneumatic line system; anda second valve part connected to the pneumatic line system and connected in parallel to the first valve part.2. The brake system of claim 1 , wherein the manipulation part comprises:a pedal; anda valve opening/closing part connected to the pedal to open or close the first valve part.3. The brake system of claim 2 , further comprising a pedal sensor configured to measure a motion of the pedal.4. The brake system of claim 1 , wherein the regenerative braking unit comprises:a power generation unit configured to convert a rotational motion of the rotating body into electric energy; anda battery unit charged by receiving electricity from the power generation unit.5. The brake system of claim 4 , further ...

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Номер записи: 53
27-02-2014 дата публикации

Apparatus for Setting Park Brakes of a Heavy Vehicle During a Failure of a Service Brakes Holding Function of the Vehicle

Номер: US20140054118A1
Автор: David W. Howell, Matthew E. ROGERS, Timothy J. Frashure, Travis G. Ramler
Принадлежит: BENDIX COMMERCIAL VEHICLE SYSTEMS LLC

An apparatus is provided for a vehicle having components of a parking brake system and components of a service brake system. The apparatus comprises a normally-energized solenoid operatively coupled to components of the parking brake system and for, when de-energized, exhausting air pressure in at least some components of the parking brake system to set park brakes. The apparatus further comprises an electronic controller arranged to (i) monitor a combination of one or more signals indicative of a service brakes holding function, (ii) monitor a combination of one or more signals indicative of a fault condition, and (iii) provide one or more signals to de-energize the normally-energized solenoid to exhaust air pressure in at least some components of the parking brake system and thereby to set park brakes when both signals indicative of a service brakes holding function and signals indicative of a fault condition of the vehicle are detected.

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Номер записи: 54
27-02-2014 дата публикации

VEHICLE BRAKING CONTROL DEVICE

Номер: US20140054955A1
Автор: KOIKE Yasuhiro, NAITO Masayuki, NINOYU Masaki
Принадлежит:

Taking a stroke within a period from when an operation of a brake operating member is started to when a predetermined stroke operation is performed as an ineffective stroke in which the master cylinder pressure is not generated, a control means controls an amount of differential pressure formed by a differential control valve such that a hydraulic braking force that corresponds to a stroke of the brake operating member is generated during the ineffective stroke, and even after the stroke of the brake operating member exceeds the ineffective stroke, increases the wheel cylinder pressure by performing raising of the amount of differential pressure formed by the differential pressure control valve by a predetermined raising amount with respect to the amount of differential pressure during the ineffective stroke. 1. A vehicle braking control device that generates a target braking force corresponding to an operation amount of a brake operating member , comprising:a master cylinder that generates a master cylinder pressure based on an operation of the brake operating member by a driver;a wheel cylinder to which a wheel cylinder pressure that is based on the master cylinder pressure is applied and which thereby generates a hydraulic braking force for each of wheels; 'control means that instructs the differential pressure that the differential pressure control valve forms, wherein', 'brake fluid pressure increasing means that increases the wheel cylinder pressure such that the wheel cylinder pressure is higher than the master cylinder pressure, the brake fluid pressure increasing means including: a differential pressure control valve that forms a differential pressure between the master cylinder pressure and the wheel cylinder pressure; a pump that sucks out brake fluid in the master cylinder in a state in which the differential pressure is provided by the differential pressure control valve, and increases the wheel cylinder pressure by discharging the brake fluid toward ...

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Номер записи: 55
27-02-2014 дата публикации

VEHICLE CONTROL APPARATUS

Номер: US20140058640A1
Автор: Ito Yoshiki, Ohkuma Hitoshi, Saito Masakazu, Tagawa Masaaki
Принадлежит:

A control unit () includes a regenerative coordination control unit (D) and a vehicle speed calculation unit (E). The regenerative coordination control unit (D) performs a regeneration cooperative control to distribute the hydraulic braking force and the regenerative braking force. The vehicle speed calculation unit (E) calculates a vehicle speed. The control unit () calculates a basic target driving force based on: an amount of accelerator operation detected by an accelerator operation amount detecting unit (), and the vehicle speed calculated by the vehicle speed calculation unit (E), and adds a value corresponding to the regenerative braking force distributed by the regenerative coordination control unit (D) to the basic target driving force, thus obtaining a target driving force to be generated by motors ( and ). 1. A vehicle control apparatus , comprising:a motor configured to drive a wheel and generate a regenerative braking force;a hydraulic braking unit configured to generate a hydraulic braking force;a brake operation amount detecting unit configured to detect an amount of brake operation;a control unit that includes a required braking force calculation unit configured to calculate a required value for vehicle braking based on the amount of brake operation detected by the brake operation amount detecting unit, and a regenerative coordination control unit configured to perform a regeneration cooperative control that distributes the hydraulic braking force and the regenerative braking force based on the required value for vehicle braking calculated by the required braking force calculation unit; andan accelerator operation amount detecting unit configured to detect an amount of accelerator operation,wherein the regenerative coordination control unit is configured to increase the regenerative braking force corresponding to the amount of brake operation detected by the brake operation amount detecting unit, and calculating a basic target driving force based on ...

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Номер записи: 56
06-03-2014 дата публикации

Brake Control Apparatus

Номер: US20140062176A1
Автор: Fujii Yusuke, MATSUOKA Atsushi, NISHIDA Shinichiro
Принадлежит: Hitachi Automotive Systems, Ltd.

A brake control apparatus includes a normally-open pressure-buildup control valve disposed between a master cylinder and each wheel-brake cylinder, a reservoir into which the brake fluid in each of the wheel-brake cylinders flows during an anti-brake skid pressure-reduction control mode, and a pressure-reduction control valve disposed between each of the wheel-brake cylinders and the reservoir. Also provided is a fluid-pressure controller configured to bring the pressure-buildup control valve to a non-controlled state and simultaneously bring the pressure-reduction control valve to a controlled state, when flowing and storing the brake fluid, flown out of the master cylinder due to a driver's brake-pedal operation, into the reservoir and when flowing and storing the brake fluid in each of the wheel-brake cylinders into the reservoir, during braking with an electric-regenerative braking system brought to an operative state. 1. A brake control apparatus of a vehicle employing a fluid-pressure friction braking system configured to generate a friction braking force by controlling a pressure of brake fluid in each wheel-brake cylinder installed on road wheels and an electric-regenerative braking system configured to generate an electric-regenerative braking force acting on the road wheels , and using both the fluid-pressure friction braking system and the electric-regenerative braking system for braking , the brake control apparatus comprising:a normally-open pressure-buildup control valve disposed between a master cylinder and each of the wheel-brake cylinders;a reservoir into which the brake fluid in each of the wheel-brake cylinders flows during an anti-brake skid pressure-reduction control mode;a pressure-reduction control valve disposed between each of the wheel-brake cylinders and the reservoir; anda fluid-pressure controller configured to bring the pressure-buildup control valve to a non-controlled state and simultaneously bring the pressure-reduction control ...

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Номер записи: 57
27-03-2014 дата публикации

Brake Control Apparatus

Номер: US20140084673A1
Автор: MATSUOKA Atsushi
Принадлежит: Hitachi Automotive Systems, Ltd.

A brake control apparatus includes: a fluid storing section for storing a quantity of brake fluid that is flown out of a master cylinder by driver's braking operation; pressure-increasing control valves each of which is disposed between the master cylinder and a corresponding one of wheel cylinders; a master cylinder pressure reduction control valve disposed in a fluid passage connected between the master cylinder and the fluid storing section. A hydraulic pressure control section is configured to perform a control operation when a braking force is being controlled with a regenerative braking system, wherein the control operation includes: controlling at least one of the pressure-increasing control valves toward closed state; controlling the master cylinder pressure reduction control valve toward open state; and allowing the quantity of brake fluid to flow into the fluid storing section. 1. A brake control apparatus for a vehicle , wherein: the vehicle includes: a hydraulic braking system configured to generate a first braking force by controlling hydraulic pressure of brake fluid in each of wheel cylinders , wherein each wheel cylinder is provided at a corresponding one of road wheels; and a regenerative braking system configured to generate a second braking force electrically at the road wheels; and the vehicle is configured to be braked by the first braking force generated by the hydraulic braking system and the second braking force generated by the regenerative braking system; and wherein the brake control apparatus comprises:a fluid storing section configured to store a quantity of brake fluid that is flown out of a master cylinder by driver's braking operation;pressure-increasing control valves each of which is disposed between the master cylinder and a corresponding one of the wheel cylinders;a master cylinder pressure reduction control valve disposed in a fluid passage connected between the master cylinder and the fluid storing section; and controlling at ...

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Номер записи: 58
03-04-2014 дата публикации

VEHICLE BRAKE DEVICE

Номер: US20140095046A1
Автор: Matsuura Masahiro, NAITO Masayuki, NISHIO Akitaka
Принадлежит: ADVICS CO., LTD.

A vehicle brake device comprises a hydraulic brake device, a regeneration brake device and a brake control device. The brake control device further includes a final value calculating device for calculating the target braking force FR at the time when an ABS control period ended and the cooperative control device restarted the operation to be as a regeneration allowing braking force FH, when the anti-lock brake control device has operated for the ABS control period within one braking operation period where the brake operating member is continuously operated and a regeneration allowing device operable after the ABS control period ended within the one braking operation period and after the cooperative control device restarted the operation and allowing the generation of the regeneration braking force FE only when the target braking force is less than a value of the regeneration allowing braking force FH. 1. A vehicle brake device comprising:a hydraulic brake device which adjustably applies a hydraulic pressure braking force to vehicle wheels;a regeneration brake device which applies a regeneration braking force to a drive wheel of the vehicle wheels driven by a generator/motor;a brake control device including a target obtaining means for obtaining a target braking force corresponding to an operating amount of a brake operating member, a cooperative control means for cooperatively controlling the hydraulic brake device and the regeneration brake device to have a total braking force which is a sum of the hydraulic pressure braking force and the regeneration braking force agree to the target braking force and an anti-lock brake control means for prohibiting a generation of the regeneration braking force by stopping the operation of the cooperative control means when the cooperative control means is in operation and a locking tendency is shown at one of the vehicle wheels and suppressing a generation of locking at the one of the vehicle wheels by adjusting the hydraulic ...

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Номер записи: 59
01-01-2015 дата публикации

BRAKE SYSTEM FOR VEHICLE DESIGNED TO PRODUCE BRAKING FORCE WITH MINIMIZED DELAY

Номер: US20150001915A1
Автор: ISHIMURA Junji, Murayama Takashi, OOISHI Masayoshi, SASAKI YASUHIRO, Suzuki Atsushi, Yamaguchi Takahiro
Принадлежит:

A braking device for a vehicle is provided which includes a hydraulic booster to make wheels of the vehicle produce frictional braking force. The hydraulic booster includes a fluid chamber and a throttle. When a brake pedal is depressed suddenly, the throttle works to obstruct or restrict an outflow of brake fluid from the fluid chamber, thereby increasing the pressure in the fluid chamber. This causes the pressure in a master chamber of the hydraulic booster to rise, thereby producing the frictional braking force almost no later than start of the depression of the brake pedal. 1. A braking device for a vehicle comprising:a master cylinder having a length with a front and a rear, the master cylinder including a cylindrical cavity extending in a longitudinal direction of the master cylinder;an accumulator which communicates with the cylindrical cavity of the master cylinder and in which brake fluid is stored;a master piston which is disposed in the cylindrical cavity of the master cylinder to be slidable in the longitudinal direction of the master cylinder, the master piston having a front oriented toward the front of the master cylinder and a rear oriented to the rear of the master cylinder, the master piston defining a master chamber and a servo chamber within the cylindrical cavity, the master chamber being formed on a front side of the master piston and storing therein the brake fluid to be delivered to a friction braking device working to apply a frictional braking force to a wheel of a vehicle, the servo chamber being formed on a rear side of the master piston;a pressure regulator which works to regulate a pressure in the brake fluid delivered from the accumulator to the servo chamber;a brake actuating member which is disposed behind the master cylinder and to which a braking effort, as produced by a driver of the vehicle, is transmitted to variably change a pressure in the pressure regulator;an input piston which is disposed behind the master piston to be ...

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Номер записи: 60
01-01-2015 дата публикации

BRAKE SYSTEM FOR VEHICLE DESIGNED TO PRODUCE BRAKING FORCE IN CASE OF LOSS OF ELECTRIC POWER

Номер: US20150001916A1
Автор: ISHIMURA Junji, Murayama Takashi, OOISHI Masayoshi, SASAKI YASUHIRO, Suzuki Atsushi, Yamaguchi Takahiro
Принадлежит:

A braking device for a vehicle is provided which includes a power fail-safe mechanism which works to create frictional braking force at a wheel of the vehicle in the event of loss of electric power. The braking device is equipped with an electromagnetic valve which is of a normally closed type. In the event of loss of electric power in the braking system, the electromagnetic valve is closed to block fluid communication between a hydraulic booster and a brake fluid reservoir, so that a stroke chamber in the hydraulic booster is hermetically closed. This enables the pressure in a master cylinder to rise in response to depression of a brake pedal to develop the frictional braking force. 1. A braking device for a vehicle comprising:a pressure generator which includes a master piston, a master cylinder, a master chamber, and a servo chamber, the master chamber and the servo chamber being formed in the master cylinder, the master piston being disposed in the master cylinder and moved in response to an operation of a brake actuating member to develop a hydraulic pressure of brake fluid in the master chamber as a function of a braking effort on the brake actuating member;a servo unit which develops a hydraulic pressure in the servo chamber as a function of the braking effort on the brake actuating member to exert a hydraulic pressure that is a function of the hydraulic pressure in the servo chamber on the master piston;a wheel cylinder to which the brake fluid is delivered from the master cylinder to produce a frictional braking force;a regenerative braking system which works to produce a regenerative braking force;a dead stroke mechanism which includes a hollow cylinder, a rear wall, a stroke chamber, a front wall, a first flow path, and a reservoir, the rear wall being moved forward within the hollow cylinder in response to the operation of the brake actuating member, the front wall being disposed in front of the rear wall to be movable within the hollow cylinder and ...

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Номер записи: 61
01-01-2015 дата публикации

BRAKE SYSTEM FOR VEHICLE DESIGNED TO FACILITATE ADJUSTMENT OF BRAKING HYSTERESIS

Номер: US20150001917A1
Автор: ISHIMURA Junji, Murayama Takashi, SASAKI YASUHIRO, Suzuki Atsushi, Yamaguchi Takahiro
Принадлежит:

A braking device for a vehicle is provided which includes a servo unit working to develop a hydraulic pressure which generates a braking force. The servo unit is actuated following movement of a movable member to develop the hydraulic pressure. The movable member moves in response to a braking effort. The braking device has an elastic member working to create resistance to the movement of the movable member relative, so that the resistance is different between when the movable member moves in a frontward direction and when the movable member moves in a backward direction. This produces a hysteresis in relation of the brake effort to the amount of movement of the movable member. 1. A braking device for a vehicle comprising:a hydraulic pressure generator which includes a master cylinder which has a given length with a front and a rear and in which a master piston and an input piston are disposed, the master cylinder having formed therein a master chamber in which the master piston is moved within the master cylinder in response to an operation on a brake actuating member to develop pressure of brake fluid;a servo unit which works to develop a hydraulic pressure within a servo chamber as a function of the operation on the brake actuating member and exert force on the master piston as a function of the hydraulic pressure in the servo chamber;a wheel cylinder to which the pressure of the brake fluid is delivered from the master chamber to develop a frictional braking force to brake a vehicle;an operating rod which has a front portion and a rear portion, the front portion being closer to the front of the master cylinder than the rear portion is, the operating rod working to transmit a braking effort, as applied to the brake actuating member, to the input piston disposed in the master cylinder;a first spring retainer which is of a hollow cylindrical shape and disposed around the front portion of the operating rod and away from an outer periphery of the operating rod;a ...

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Номер записи: 62
01-01-2015 дата публикации

BRAKE SYSTEM FOR VEHICLE DESIGNED TO ENSURE STABILITY IN MOTION OF BRAKE PEDAL

Номер: US20150001918A1
Автор: ISHIMURA Junji, Murayama Takashi, SASAKI YASUHIRO, Suzuki Atsushi, Yamaguchi Takahiro
Принадлежит:

A braking device for a vehicle is provided which includes a master cylinder, a pedal return spring, and a movable member. When a brake pedal is depressed, it is transmitted to the master cylinder through the pedal return spring to develop a braking force. The movable member is disposed between the pedal return spring and the master cylinder and works to absorb deformation of the pedal return spring arising from tilting thereof when the brake pedal is depressed and swings, thereby ensuring the stability in motion of the brake pedal. 1. A braking device for a vehicle comprising:a master cylinder which has a given length with a front and a rear, the master cylinder having a cylindrical cavity extending in a longitudinal direction of the master cylinder;a reservoir which connects with the cylindrical cavity of the master cylinder and in which brake fluid is stored;an accumulator which connects with the cylindrical cavity of the master cylinder and in which brake fluid is stored under pressure;a master piston which is disposed in the cylindrical cavity to be slidable in a longitudinal direction thereof, the master piston having a front oriented toward the front of the master cylinder and a rear oriented to the rear of the master cylinder, the master piston defining a master chamber and a servo chamber within the cylindrical cavity, the master chamber being formed on a front side of the master piston and storing therein the brake fluid to be delivered to a brake device working to apply a frictional braking force to a wheel of a vehicle, the servo chamber being formed on a rear side of the master piston;a hydraulic pressure regulator which regulates a pressure of the brake fluid delivered from the accumulator to the servo chamber;an input piston which is disposed behind the master piston to be slidable within the cylindrical cavity of the master cylinder;a braking simulator member which works to urge the input piston rearward within the cylindrical cavity of the master ...

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Номер записи: 63
01-01-2015 дата публикации

BRAKE SYSTEM FOR VEHICLE WITH COLLISION AVOIDANCE MECHANISM

Номер: US20150001919A1
Автор: ISHIMURA Junji, Murayama Takashi, OOISHI Masayoshi, SASAKI YASUHIRO, Suzuki Atsushi, Yamaguchi Takahiro, YAMASHITA Hironobu
Принадлежит:

A braking device for a vehicle is provided which includes a hydraulic booster to make wheels of the vehicle produce frictional braking force, a solenoid valve installed in a flow path connecting between a brake fluid accumulator and a servo chamber of the hydraulic booster, and a collision avoidance controller. When determining that there is a risk of a collision with an obstacle, the collision avoidance controller opens the first solenoid valve to achieve emergency braking to minimize the risk of the collision. Basically, the emergency braking is achieved only using the solenoid valve, thus allowing an emergency avoidance mechanism of the braking device to be constructed with a minimum of equipment and facilitating the mountability of the braking device in vehicles. 1. A braking device for a vehicle comprising:a master cylinder having a length with a front and a rear, the master cylinder including a cylindrical cavity extending in a longitudinal direction of the master cylinder;an accumulator in which brake fluid is stored;a reservoir which connects with the cylindrical cavity of the master cylinder and in which the brake fluid is stored;a master piston which is disposed in the cylindrical cavity of the master cylinder to be slidable in the longitudinal direction of the master cylinder, the master piston having a front oriented toward the front of the master cylinder and a rear oriented to the rear of the master cylinder, the master piston defining a master chamber and a servo chamber within the cylindrical cavity, the master chamber being formed on a front side of the master piston and storing therein the brake fluid to be delivered to a friction braking device working to apply a frictional braking force to a wheel of a vehicle, the servo chamber being formed on a rear side of the master piston and supplied with the brake fluid from the accumulator;a pressure regulator which works to regulate a pressure in the brake fluid delivered from the accumulator to the ...

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Номер записи: 64
01-01-2015 дата публикации

BRAKE SYSTEM FOR VEHICLE DESIGNED TO IMPROVE DURABILITY AND MANEUVERING FEELING

Номер: US20150001920A1
Автор: ISHIMURA Junji, Murayama Takashi, OOISHI Masayoshi, SASAKI YASUHIRO, Suzuki Atsushi, Yamaguchi Takahiro
Принадлежит:

A braking device for a vehicle is provided which includes a braking simulator, thus resulting in improved mountability of the braking device in the vehicle. The braking device is designed to permit component parts of the hydraulic booster to slide on one another in response to a braking effort on a brake pedal, thereby absorbing an undesirable load on the braking device and also ensuring the stability in operating the brake pedal. This results in improved durability and maneuvering feeling of the braking device. 1. A braking device for a vehicle comprising:a master cylinder which has a given length with a front and a rear, the master cylinder having a cylindrical cavity extending in a longitudinal direction of the master cylinder;an accumulator which connects with the cylindrical cavity of the master cylinder and in which brake fluid is stored under pressure;a reservoir which connects with the cylindrical cavity of the master cylinder and in which the brake fluid is stored;a master piston which is disposed in the cylindrical cavity to be slidable in a longitudinal direction thereof, the master piston having a front oriented toward the front of the master cylinder and a rear oriented to the rear of the master cylinder, the master piston defining a master chamber and a servo chamber within the cylindrical cavity, the master chamber being formed on a front side of the master piston and storing therein the brake fluid to be delivered to a brake device working to apply a frictional braking force to a wheel of a vehicle, the servo chamber being formed on a rear side of the master piston;a spool valve which is disposed on the rear side of the master piston within the cylindrical cavity of the master cylinder, the spool valve working to switch among a pressure-reducing mode, a pressure-increasing mode, and a pressure-holding mode, the pressure-reducing mode being to communicate between the servo chamber and the reservoir chamber, the pressure-increasing mode being to ...

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Номер записи: 65
01-01-2015 дата публикации

Brake system for vehicle designed to facilitate air purging during braking

Номер: US20150001921A1
Автор: Atsushi Suzuki, Junji Ishimura, Takahiro Yamaguchi, Takashi Murayama, Yasuhiro Sasaki
Принадлежит: Denso Corp

A braking device for a vehicle is provided which is equipped with a hydraulic booster in which a hydraulic pressure chamber is formed. The hydraulic booster has a plurality of fluid flow paths which are shaped to create convective spiral flows of brake fluid to flush bubbles of air into the spiral flows of brake fluid every braking operation. The mixture of the bubbles of air and the brake fluid is then delivered to a reservoir. The bubbles of air are discharged outside the reservoir, thereby purging the hydraulic booster of air completely.

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Номер записи: 66
07-01-2021 дата публикации

Electric parking brake having a gearing with a torque limiting device

Номер: US20210001826A1
Автор: Aaron Wahlfors, Kraig Gerber
Принадлежит: ZF Active Safety US Inc

An electrically actuated parking brake has a single electric motor producing a torque, a first torque limiting device with a first spring force, and a second torque limiting device with a second spring force. The first torque limiting device fully transmits a first portion of the torque to a first spindle until a first clamp force overcomes the first spring force and the second torque limiting device fully transmits a second portion of the torque to a second spindle until a second clamp force overcomes the second spring force. When the first clamp force overcomes the first spring force and the second spring force overcomes the second clamp force, the first portion of the torque that exceeds the first spring force is transmitted to the second spindle by the second torque limiting device.

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Номер записи: 67
07-01-2021 дата публикации

BRAKE CONTROL DEVICE

Номер: US20210001830A1
Автор: URAOKA Terushige
Принадлежит: ADVICS CO., LTD.

A brake control device to be applied to a vehicle having a hydraulic brake generating a hydraulic braking force, which is a braking force converted from a fluid pressure to a wheel of the vehicle, and an electric parking brake generating an electric braking force, which is a braking force different from the hydraulic braking force, on the wheel by a wheel brake mechanism driven by a motor. The brake control device includes an electric parking brake controller for determining a current target value, which is a target value of an electric current through the motor, by using a target braking force, and for controlling the electric parking brake by using the current target value. The electric parking brake controller is configured to estimate the fluid pressure in the hydraulic brake by using a current detection value, which is a detection value of an electric current through the motor. 1. A brake control device to be applied to a vehicle , the vehicle having a hydraulic brake capable of generating a hydraulic braking force which is braking force converted from a fluid pressure to a wheel of the vehicle; and an electric parking brake capable of generating an electric braking force which is braking force different from the hydraulic braking force to the wheel and is provided by a wheel brake mechanism driven by a motor ,wherein the brake control device comprises:an electric parking brake controller for determining a current target value which is a target value of an electric current through the motor, by using a target braking force, and for controlling the electric parking brake by using the current target value,wherein the electric parking brake controller is configured:to estimate the fluid pressure in the hydraulic brake by using a detection current which is a detection value of an electric current through the motor.2. The brake control device according to claim 1 , wherein a predetermined threshold for the current detection value through the motor is set in the ...

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Номер записи: 68
07-01-2016 дата публикации

VEHICLE BRAKING SYSTEM

Номер: US20160001757A1
Автор: Chatroux Daniel, DESBOIS-RNAUDIN Matthieu, GRANGETTE Fabien
Принадлежит: Commissariat A L'Energie Atomique Et Aux Energies Alternatives

The instant disclosure describes a braking system for braking at least a first wheel of a motor vehicle comprising a first brake, a hydraulic circuit for controlling the first brake and a first electric motor for controlling the first brake, which brake and motor can be actuated at least partially simultaneously using one and the same actuating member. 1301301401501601820244227. A braking system (; ; ; ; ) for at least one first wheel of a motor vehicle comprising a first brake () , a hydraulic circuit ( , ) for controlling the first brake and a first electric motor () for controlling the first brake , said circuit and said motor being at least partly simultaneously actuable by a same actuation member ().234273842. The braking system of claim 1 , comprising a sensor () capable of providing a signal (S) representative of the driver's action on the actuation member () claim 1 , a processing unit () capable of providing a set point value (C) from said signal claim 1 , the first electric motor () being controlled based on said set point value.318202442. The braking system of claim 1 , wherein the first brake () is hydraulically controlled and mechanically controlled claim 1 , the hydraulic circuit ( claim 1 , ) being connected to the hydraulic control system of the first brake and the first electric motor () being connected to the mechanical control system of the first brake42018242927. The braking system of claim 3 , wherein the hydraulic circuit comprises a master cylinder () connected to the hydraulic control system of the first brake () by at least one pipe () containing a brake fluid claim 3 , the braking system comprising a connection mechanism () mechanically connecting the actuation member () to at least one piston of the master cylinder claim 3 , the connection mechanism comprising no servo-brake.5142022. The braking system of any of to claim 3 , comprising a second hydraulically controlled and mechanically controlled brake () claim 3 , the hydraulic circuit ( ...

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Номер записи: 69
04-01-2018 дата публикации

VEHICLE COMPRESSOR CONTROL APPARATUS AND CONTROL METHOD

Номер: US20180001743A1
Автор: KIM Yeong Jun
Принадлежит: HYUNDAI MOTOR COMPANY

The disclosure herein relates to a vehicle compressor control apparatus and control method, and more particularly to a vehicle compressor control apparatus for controlling compressor operating rate to allow braking according to brake negative pressure, while maintaining a minimum level of operation of the compressor. By preventing compressor deactivation during braking, the control apparatus assists in preventing moisture build-up of moisture on a windshield that decreases visibility for a driver and increases safety concerns. The apparatus includes: a compressor that reduces a temperature by compressing an air conditioner coolant; a data sensor that detects status data; and a controller that determines whether a brake negative pressure margin rate meets a first reference value when the status data satisfy a predetermined condition, and sets a compressor operating accordingly when the brake negative pressure margin rate meets a first reference value. 1. A vehicle compressor control apparatus comprising:a compressor;a data sensor; anda controller;wherein the controller receives status data from the data sensor; determines whether a brake negative pressure margin rate is less than or equal to a first reference value if the status data satisfy a predetermined condition; and sets a compressor operating rate corresponding to the brake negative pressure margin rate if the brake negative pressure margin rate pressure is less than or equal to a first reference value.2. The vehicle compressor control apparatus of claim 1 , wherein the data sensor is a temperature sensor claim 1 , a pressure sensor claim 1 , an alternator operating rate sensor or a vehicle speed sensor.3. The vehicle compressor control apparatus of claim 1 , wherein the data sensor is an external temperature sensor; andwherein the control apparatus further comprises a vehicle speed sensor, an altitude sensor, and an alternator operating rate sensor; andwherein the controller determines whether an external ...

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Номер записи: 70
02-01-2020 дата публикации

Method for Determining the Braking Force in an Electromechanical Brake Device Having an Electric Brake Motor

Номер: US20200001852A1
Автор: Sussek Ullrich
Принадлежит:

In the case of a method for determining the braking force in an electromechanical brake device having a brake motor, the braking force is determined from a prevailing load current that is determined from the difference between the measured motor current and the calculated switch-on current. 1. A method for determining a braking force in an electromechanical brake device having an electric brake motor configured to urge a brake piston against a brake disc , the method comprising:determining a prevailing load current from a difference between a measured prevailing motor current of the brake motor and a calculated switch-on current; anddetermining a braking force from the prevailing load current, in response to a brake lining on the brake piston lying against the brake disc at a point in time in which the brake motor is switched on.2. The method according to further comprising:calculating the switch-on current as a function of a motor time constant.4. The method according to claim 2 , the calculating the switch-on current further comprising:calculating the switch-on current using a recursive algorithm based on the motor time constant.6. The method according to further comprising:determining an initial value of the switch-on current at the point in time zero in the recursive algorithm based on a falling edge of the switch-on current.7. The method according to further comprising:calculating a motor resistance and a motor constant during a preceding procedure of switching on the brake motor to create a movement of the brake piston toward the brake disc.8. The method according to further comprising:providing braking force with the electromechanical brake device according to the the determined braking force.9. A control device for controlling adjustable components of an electromechanical brake device having an electric brake motor configured to urge a brake piston against a brake disc claim 1 , the control device being configured to:determine a prevailing load current from ...

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Номер записи: 71
12-01-2017 дата публикации

Motor vehicle

Номер: US20170008401A1
Автор: Martin Stemmer
Принадлежит: Audi AG

The invention relates to a motor vehicle comprising: a number of wheels; a brake system having hydraulically actuatable brakes corresponding to each wheel; at least one brake circuit via which the brakes can be actuated; a brake booster via which the brake circuit can be operated, said brake booster being actuatable via a brake pedal to be actuated by the driver; and at least one pressure generation device and/or pressure accumulator device, which can be controlled by a control device, and via which the hydraulic pressure inside the brake circuit can be modulated. At least one electric motor ( 9 ) is provided, which motor is used in the event of a detected failure inside the brake system ( 2 ) to generate a deceleration torque by automatically switching into a generator operation, in order to brake the vehicle ( 1 ) until same has reached a standstill.

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Номер записи: 72
12-01-2017 дата публикации

CONTROL APPARATUS FOR VEHICLE

Номер: US20170009668A1
Автор: NISHIDA Hideyuki
Принадлежит: TOYOTA JIDOSHA KABUSHIKI KAISHA

A vehicle having a valve stop mode control unit configured such that an intake valve and an exhaust valve are stopped in a closed state during rotation of an output shaft, supply of fuel to an engine is stopped, a clutch is made to be in an engaged state, and pistons are driven by rotational forces from driving wheels through the output shaft. When there is a request for valve stop inertial running, a negative pressure is supplied to an intake passage by a vacuum pump. 1. A control apparatus for a vehicle configured to control a vehicle comprising a valve operation mechanism that can stop an intake valve and an exhaust valve in an engine in a closed state during rotation of an output shaft of the engine , and a clutch that can switch a power transmission route between the engine and a driving wheel between an engaged state and a disengaged state , further comprising:a valve stop mode control unit configured to, in a case where a request for valve stop inertial running is made, stop the intake valve and the exhaust valve in the closed state during the rotation of the output shaft, stop supply of fuel to the engine, control a throttle valve of the engine to an idling opening or less, and set the clutch in an engaged state to drive pistons of the engine by a rotational force of the driving wheel through the output shaft; andan intake pressure control unit configured to, in a case where the request for valve stop inertial running is made, supply a negative pressure to an intake passage section by a vacuum pump connected to the intake passage section.2. The control apparatus for a vehicle according to claim 1 , whereinthe vacuum pump is configured to supply a negative pressure to a brake booster for assisting a brake force of a brake.3. The control apparatus for a vehicle according to claim 1 , whereinthe engine further comprises a vacuum switching valve for opening/closing a connecting conduit that connects the vacuum pump and the intake passage, whereinthe intake ...

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Номер записи: 73
10-01-2019 дата публикации

Controller and Method for Actuating at least one Valve of a Brake System of a Vehicle, said Valve being Closed in the De-Energized State

Номер: US20190009764A1
Автор: Bresser Andreas, Knoop Michael
Принадлежит: ROBERT BOSCH GMBH

A controller is configured to control at least one valve of a brake system of a vehicle that is closed in a de-energized state. The controller includes an actuation device configured to actuate the valve into an open state and to keep the valve in the open state. A holding current with at least one first average target current strength is output as a control signal by the actuation device to the valve. The holding current output to the valve is increased to at least one second average target current strength which is greater than the first average target current strength while taking into consideration provided information pertaining to a current rotational speed of an electric motor of a piston/cylinder device of the brake system and/or at least one current hydraulic pressure in at least one sub-volume of the brake system. 1. A controller for at least one normally closed valve of a brake system of a vehicle , comprising:an actuator configured to control and to hold the normally closed valve in an open state thereof by outputting a holding current with at least one first average setpoint current strength from the actuator to the normally closed valve as a control signal,wherein during the controlling and holding of the normally closed valve in the open state thereof, the actuator is additionally configured to increase the holding current that is output to the normally closed valve to at least one second average setpoint current strength that is greater than the first average setpoint current strength, while taking into account information provided about a current motor revolution rate of an electric motor of a piston-cylinder mechanism of the brake system and/or at least one current hydraulic pressure in at least one sub-volume of the brake system.2. The controller as claimed in claim 1 , wherein during the controlling and holding of the normally closed valve in the open state thereof claim 1 , the actuator is configured to increase the holding current to at least ...

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Номер записи: 74
18-01-2018 дата публикации

Control device for vehicle and control method for vehicle

Номер: US20180015925A1
Автор: Akira Sawada, Hiroyuki Komatsu, Ken Ito, Takashi Nakajima, Yuji Katsumata
Принадлежит: Nissan Motor Co Ltd

The device that generates the friction braking force to decelerate the vehicle estimates the disturbance torque acting on the vehicle. When the accelerator operation amount is equal to or less than the predetermined value and the vehicle is just before the stop of the vehicle, the control device for vehicle causes the friction braking amount to converge to the friction braking amount to the value decided on the basis of the disturbance torque estimated value Td in conjunction with the reduction in the motor rotation speed (speed parameter) proportionate to the traveling speed of the vehicle.

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Номер записи: 75
17-01-2019 дата публикации

VEHICLE BRAKING DEVICE

Номер: US20190016317A1
Автор: MASUDA Yoshio, NINOYU Masaki, Okano Takahiro
Принадлежит:

A vehicle braking device performs a following control which makes an actual value of a physical quantity follow a first target value when the actual value of the physical quantity is a value outside a dead zone and a suppression control which suppresses a change of the actual value when the actual value is a value within the dead zone in order to control the physical quantity associated with the braking force to be the first target value. The vehicle braking device comprises a setting portion which sets a second target value which follows the first target value and which is smaller than the first target value, when the first target value is increasing and a control portion which performs a control to make the actual value approximate the second target value. 1. A vehicle braking device which performs a following control which makes an actual value of a physical quantity which is associated with a braking force to be applied to a vehicle wheel follow a first target value which is a target value of the physical quantity when the actual value of the physical quantity is a value outside a dead zone and a suppression control which suppresses a change of the actual value when the actual value is a value within the dead zone in order to control the physical quantity associated with the braking force to be the first target value which is the target value of the physical quantity , assuming that the dead zone is defined to be a value between a first threshold value which is smaller than the first target value and a second threshold value which is greater than the first target value , the vehicle braking device comprising:a setting portion which sets a second target value which follows the first target value and which is smaller than the first target value, when the first target value is increasing; anda control portion which performs a control to make the actual value approximate the second target value.2. The vehicle braking device according to claim 1 , wherein:the setting ...

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Номер записи: 76
16-01-2020 дата публикации

BRAKE CONTROL DEVICE

Номер: US20200017081A1
Автор: NAKANO Keita, URANO Tatsuya, URAOKA Terushige
Принадлежит: ADVICS CO., LTD.

The brake control device controls a hydraulic brake to generate hydraulic braking force on both the front and rear wheels of a four-wheel-drive vehicle, and an electrical parking brake to generate parking brake force, different from the hydraulic braking force, on the front or rear wheels. The brake control device includes: a detection unit that detects parking brake operation for causing the electrical parking brake to generate a parking brake force; and a control unit for reducing the hydraulic braking force generated on the front wheels or the rear wheels and adjusting the hydraulic braking force on the other of the front wheels or the rear wheels to a magnitude allowing a stationary vehicle state to be maintained, before a parking brake force is generated by the electrical parking brake, when a parking brake operation is detected while a stationary state is being maintained solely by the hydraulic braking force. 1. A brake control device that controls a hydraulic brake capable of generating a hydraulic braking force on both front and rear wheels of a four-wheel-drive vehicle and an electric parking brake capable of generating a parking brake force , which is different from the hydraulic braking force , on the front wheels or the rear wheels , the brake control device comprising:a detection unit for detecting a parking brake operation for causing the electric parking brake to generate a parking brake force; anda control unit for reducing the hydraulic braking force generated on the front wheels or the rear wheels and adjusting the hydraulic braking force generated on the other of the front wheels or the rear wheels to a magnitude that allows a stationary state of the vehicle to be maintained, before the parking brake force is generated by the electric parking brake, when the parking brake operation is detected while the stationary state is being maintained solely by the hydraulic braking force generated on both the front and rear wheels.2. The brake control ...

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Номер записи: 77
16-01-2020 дата публикации

VEHICLE BRAKING CONTROL DEVICE

Номер: US20200017082A1
Автор: HASHIMOTO Kosuke, KUBOTA Hayato, Nakata Daisuke, Takahashi Kenichiro
Принадлежит: ADVICS CO., LTD.

Provided is a vehicle braking control device applicable to a vehicle equipped with an electric-powered parking braking device, a hydraulic braking device and a regenerative braking device. The braking control device comprises a first braking control unit and a second braking control unit. When a parking braking operation is performed while the vehicle is travelling, the first braking control unit implements a first braking process which increases the braking force to the vehicle by operating the hydraulic braking device. When the braking force to the vehicle needs to be increased in a situation where the first braking process is being implemented, the second braking control unit implements a second braking process which increases the braking force to the vehicle by operating the regenerative braking device. 16.-. (canceled)7. A vehicle braking control device applicable to a vehicle equipped with a plurality of braking devices including an electric-powered parking braking device that increases a braking force to a wheel of the vehicle when a parking braking operation is performed , the vehicle braking control device comprising:a first braking control unit configured to perform a first braking process which increases a braking force to the vehicle by operating a first braking device of the plurality of braking devices when the parking braking operation is performed while the vehicle is traveling; anda second braking control unit configured to perform a second braking process which increases the braking force to the vehicle by operating a second braking device, which is different from the first braking device, of the plurality of braking devices when there is a need to increase the braking force to the vehicle during the first braking process being performed.8. The vehicle braking control device according to claim 7 , further comprising a calculation unit configured to calculate a target braking force claim 7 , which is a target value of the braking force to the ...

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Номер записи: 78
16-01-2020 дата публикации

METHOD OF MANUFACTURING BRAKE BOOSTERS

Номер: US20200017088A1
Автор: Horner, JR. Charles Byron, Sadanowicz David
Принадлежит:

A method of manufacturing vehicle brake boosters includes load testing a plurality of reaction discs and sorting the load-tested reaction discs into multiple, separate batches based on the load test results. A first batch of plunger plates is formed to an axial length to correspond with a first of the separate batches of reaction discs. A first batch of the vehicle brake boosters is assembled with a first one of the multiple, separate batches of reaction discs and the first batch of plunger plates to achieve a target jump-in force. A second batch of plunger plates is formed to an axial length to correspond with a second one of the separate batches of reaction discs. A second batch of the vehicle brake boosters is assembled with a second one of the multiple separate batches of reaction discs and the second batch of plunger plates to achieve the target jump-in force. 1. A method for adapting a vehicle brake booster for a desired jump-in force , the method comprising:providing an elastic reaction disc for assembly in the brake booster between an input member and an output member;load testing the reaction disc; andselecting a plunger plate with an axial length to complement the reaction disc, based on the load test results of the reaction disc.2. The method of claim 1 , wherein selecting the plunger plate includes selecting a plunger plate pre-formed with a predetermined axial length that complements the reaction disc to achieve the desired jump-in force.3. The method of claim 1 , wherein selecting the plunger plate includes pressing the plunger plate on a brake booster assembly line to achieve a desired axial length that complements the reaction disc to achieve the desired jump-in force.4. The method of claim 1 , wherein load testing the reaction disc includes measuring an output force in response to an input force.5. The method of claim 1 , further comprising assembling the vehicle brake booster by locating the reaction disc and the second plunger plate relative to ...

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Номер записи: 79
17-04-2014 дата публикации

VACUUM BOOSTER

Номер: US20140102843A1
Автор: Tanizawa Kiyoaki, Yatabe Shuichi
Принадлежит: NISSIN KOGYO CO., LTD.

According to one embodiment, a vacuum booster includes a booster shell and a booster piston which divides an interior of the booster shell into a front vacuum chamber and a rear operation chamber. The vacuum booster further includes a valve cylinder in which a control valve controls a communication state of the operation chamber depending on a movement of an input rod. A bearing cylinder is provided on a rear wall of the booster shell. A bearing bush is mounted in the bearing cylinder to support the valve cylinder, and a seal lip is provided at a rear end of the bearing bush integrally therewith to contact elastically closely with the valve cylinder. A grease reservoir is provided in an inner surface of the bearing bush, and an extension grease reservoir is provided in an inner surface of the seal lip. 1. A vacuum booster , comprising:{'b': '1', 'a booster shell ();'}{'b': 4', '1', '2', '3', '2, 'a booster piston () which is accommodated in the booster shell () to divide an interior thereof into a front vacuum chamber () and a rear operation chamber (), the front vacuum chamber () being connected to a vacuum source (V);'}{'b': 10', '4, 'a valve cylinder () which is connected to the booster piston ();'}{'b': 20', '10, 'an input rod () which is contained inside the valve cylinder ();'}{'b': 38', '10', '3', '2', '20, 'a control valve () which is contained inside the valve cylinder () to control the operation chamber () to communicate with the front vacuum chamber () or with the atmosphere depending on a back and forth movement of the input rod ();'}{'b': 12', '1, 'a bearing cylinder () which is provided on a rear wall of the booster shell ();'}{'b': 9', '12', '10', '9, 'a bearing bush () which is mounted in the bearing cylinder () to support slidably an outer circumferential surface of the valve cylinder (), the bearing bush () being made of an elastic material;'}{'b': 13', '9', '10', '13', '9, 'a seal lip () which is provided at a rear end of the bearing bush () ...

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Номер записи: 80
22-01-2015 дата публикации

METHOD AND SYSTEM FOR REDUCING VACUUM CONSUMPTION IN A VEHICLE

Номер: US20150021140A1
Автор: Cunningham Ralph Wayne, Pursifull Ross Dykstra
Принадлежит:

A system and method for conserving vacuum within a vehicle is described. In one example, vacuum is conserved via limiting volume expansion of a brake booster working chamber. 1. A method for conserving vacuum , comprising:limiting a brake line pressure increase at a wheel brake in response to an increasing in brake pedal force when a vehicle is stopped.2. The method of claim 1 , where the brake line pressure increase is limited via closing a valve located along a brake line claim 1 , the brake line extending from a master cylinder to the wheel brake.3. The method of claim 1 , further comprising holding the brake line pressure at a pressure based on road grade.4. The method of claim 1 , further comprising holding the brake line pressure at a pressure based on vehicle mass.5. The method of claim 1 , further comprising decreasing vacuum in a brake booster working chamber while limiting the brake line pressure increase.6. The method of claim 1 , further comprising limiting the brake line pressure increase in response to a transmission of the vehicle being in park or neutral.7. The method of claim 1 , further comprising limiting the brake line pressure increase in response to the increasing brake pedal force while an engine of the vehicle being stopped or being started.8. The method of claim 1 , further comprising automatically stopping an engine of the vehicle when the vehicle is stopped and holding a substantially constant brake line pressure at the wheel brake while the engine is stopped.9. A method for conserving vacuum claim 1 , comprising:limiting volume expansion of a brake booster working chamber in response to a speed of a vehicle.10. The method of claim 9 , where the speed of the vehicle is less than a threshold speed or zero speed claim 9 , and where the limiting of volume expansion occurs while an engine of the vehicle is being started via a pushbutton.11. The method of claim 9 , where volume expansion of the brake booster working chamber is limited via ...

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Номер записи: 81
22-01-2015 дата публикации

METHOD AND SYSTEM FOR REDUCING VACUUM USE IN A VEHICLE

Номер: US20150021141A1
Автор: Cunningham Ralph Wayne, Ferguson Russ William, Pursifull Ross Dykstra
Принадлежит:

A system and method for conserving vacuum within a vehicle is described. In one example, a vacuum level in a working chamber of a vacuum operated brake booster is controlled so as to limit vacuum consumption. 1. A method for conserving vacuum , comprising:providing vacuum to a brake booster to apply vehicle brakes when a vehicle is stopped; andstopping brake booster vacuum consumption in response to a vacuum level in a working chamber of the brake booster being less than a threshold vacuum level that stops the vehicle from moving when the vehicle is stopped.2. The method of claim 1 , where brake booster vacuum consumption comprises allowing air to flow into the working chamber claim 1 , and further comprising stopping or rotating an engine of the vehicle.3. The method of claim 1 , where stopping brake booster vacuum consumption is further based on an applied gear of a transmission.4. The method of claim 1 , where the vehicle includes a transmission and where the transmission is shifted into neutral.5. The method of claim 1 , where stopping brake booster vacuum consumption includes closing a valve that selectively allows air to flow into the working chamber.6. The method of claim 1 , where brake booster vacuum consumption is provided via an operator applying a brake pedal.7. The method of claim 1 , further comprising adjusting the threshold vacuum for at least one of vehicle mass and road grade.8. The method of claim 1 , further comprising automatically stopping an engine of the vehicle when the vehicle is stopped and stopping brake booster vacuum consumption while the engine is stopped.9. A method for conserving vacuum claim 1 , comprising:starting an engine of a vehicle in response to a request to start the engine while a transmission of the vehicle is in park; andoperating a first valve to reduce vacuum consumption of a brake booster while a driver is applying a brake actuator and while the transmission is in park.10. The method of claim 9 , where operating the ...

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Номер записи: 82
22-01-2015 дата публикации

HYDRAULIC BRAKE DEVICE FOR VEHICLE

Номер: US20150021976A1
Автор: Isono Hiroshi, Miwa Akihiko, Mizutani Yasuji, YAMASOE Yosuke
Принадлежит:

A vehicle hydraulic brake system of the brake-by-wire type includes input piston and a master piston configured to be actuated under hydraulic pressure introduced into a second fluid chamber and mounted in the housing so as to be movable relative to each other through a partition wall and a first fluid chamber. The piston defines therein a communication passage which extends from a fourth fluid chamber to the first fluid chamber and in which a check valve is mounted. When the piston is advanced under hydraulic pressure introduced into the second fluid chamber, the volume of the fourth fluid chamber decreases, while the volume of the first fluid chamber increases. This allows brake fluid in the fourth fluid chamber to be quickly released into the first fluid chamber through the communication passage and through a pipe line in which an electromagnetic on-off valve are mounted. 1. A vehicle hydraulic brake system of a brake-by-wire type which is configured to adjust , in a pressure regulator , hydraulic pressure supplied from a high hydraulic pressure source to a value corresponding to braking operation , or to a value necessary to generate a target braking force set by an electronic control unit , actuate a master cylinder under the thus adjusted hydraulic pressure , generating a brake hydraulic pressure , and supply the brake hydraulic pressure to wheel cylinders ,wherein an input piston configured to be advanced under a brake operating force, and a master piston configured to be advanced under the adjusted hydraulic pressure are mounted in a housing, wherein the input piston and the master piston are movable relative to each other through a partition wall provided within an inner surface of the housing and a first fluid chamber, wherein the master piston includes a small-diameter portion at a rear end of the master piston, wherein the small-diameter portion liquid-tightly and movably extends through the partition wall and protrudes into the first fluid chamber, ...

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Номер записи: 83
22-01-2015 дата публикации

ELECTRIC BRAKE DEVICE

Номер: US20150021981A1
Автор: Kidera Kazuharu, Shimada Takashi, UEURA Soichiro
Принадлежит: HONDA MOTOR CO., LTD.

There is provided a brake system for vehicles, the brake system including: a slave cylinder S/C to generate a hydraulic pressure by an electric motor according to a braking operation by a driver; and a controller to decrease an operation amount of the slave cylinder S/C when an operation amount of the electric motor is maintained, then increase an operation amount of the slave cylinder S/C when a change occurs in an operation amount of the electric motor subsequently. The controller determines whether or not the phase currents Iu, Iv, Iw of the electric motor are in two-phase continuously energized state and the state remains for a certain time or longer. When the determination conditions are satisfied, the controller performs commutation control to generate commutation in the electric motor by reducing a target hydraulic pressure of the slave cylinder S/C. 1. An electric brake apparatus , comprising:an electric hydraulic pressure generating device configured to generate a hydraulic pressure by an electric motor according to a braking operation by a driver; anda controller configured to decrease an operation amount of the electric hydraulic pressure generating device when an operation amount of the electric motor is maintained, then increase the operation amount of the electric hydraulic pressure generating device when a change occurs subsequently in an operation amount of the electric motor.2. The electric brake apparatus according to claim 1 ,wherein in a case where the operation amount of the electric hydraulic pressure generating device is decreased by the controller, the controller decreases the operation amount at a time when the operation amount reaches nearly a maximum operation amount.3. The electric brake apparatus according to claim 1 ,wherein when anti-lock brake control is started, the controller prohibits decreasing of the operation amount of the electric hydraulic pressure generating device.4. The electric brake apparatus according to claim 1 ,wherein ...

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Номер записи: 84
25-01-2018 дата публикации

METHOD OF MANUFACTURING BRAKE BOOSTERS

Номер: US20180022330A1
Автор: Horner, JR. Charles Byron, Sadanowicz David
Принадлежит:

A method of manufacturing vehicle brake boosters includes load testing a plurality of reaction discs and sorting the load-tested reaction discs into multiple, separate batches based on the load test results. A first batch of plunger plates is formed to an axial length to correspond with a first of the separate batches of reaction discs. A first batch of the vehicle brake boosters is assembled with a first one of the multiple, separate batches of reaction discs and the first batch of plunger plates to achieve a target jump-in force. A second batch of plunger plates is formed to an axial length to correspond with a second one of the separate batches of reaction discs. A second batch of the vehicle brake boosters is assembled with a second one of the multiple separate batches of reaction discs and the second batch of plunger plates to achieve the target jump-in force. 1. A method of manufacturing a series of vehicle brake boosters , each having a brake input member configured to receive a braking input force , a brake output member configured to supply a braking output force in excess of the braking input force , an elastic reaction disc , and a plunger plate , the method comprising:load testing a plurality of reaction discs for the series of vehicle brake boosters, and sorting the load-tested reaction discs into multiple, separate batches based on the load test results;forming a first batch of plunger plates for the series of vehicle brake boosters to an axial length to correspond with a first of the separate batches of reaction discs;assembling a first batch of the series of vehicle brake boosters with a first one of the multiple, separate batches of reaction discs and the first batch of plunger plates to achieve a target jump-in force;forming a second batch of plunger plates for the series of vehicle brake boosters to an axial length to correspond with a second one of the separate batches of reaction discs; andassembling a second batch of the series of vehicle brake ...

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Номер записи: 85
10-02-2022 дата публикации

REDUNDANT BRAKE SYSTEM HAVING TWO PRESSURE SUPPLY UNITS FOR ELECTRIC VEHICLES, AND VEHICLES WITH AUTONOMOUS DRIVING OF STEP 3 (HAD) TO STEP 5 (AD)

Номер: US20220041150A1
Автор: LEIBER Thomas
Принадлежит:

A brake system for a vehicle may include at least two hydraulic brake circuits, each having at least one hydraulically acting wheel brake, at least two pressure supply devices, each of which is driven by an electromotive drive, at least one valve assembly having valves for the wheel-individual adjustment of brake pressures and/or for separating the wheel brakes from, or connecting same to, a pressure supply device, at least one electronic control and regulating unit, one of which is a superordinate central control unit that controls individual control and regulating units of the components of the brake system, as well as at least one additional electric drive motor for at least one axle or wheel of the vehicle. The brake system may use the at least one pressure supply device and/or the at least one electric drive motor for controlling pressure in at least one wheel brake for steering interventions. 1. A braking system for a vehicle , including:at least two hydraulic brake circuits, each having at least one hydraulically acting wheel brake,at least two pressure supply devices, each of which is driven by an electric-motor drive,at least one valve assembly having valves for the wheel-specific adjustment of brake pressures and/or for disconnecting or separating the wheel brakes from a pressure supply device of the at least two pressure supply devices,at least one electronic control and regulating unit, one of which being a superordinate central control unit that controls individual control and regulating units of components of the braking system, andat least one additional electric drive motor is provided for at least one axle or wheel of the vehicle, wherein the at least one additional electric drive motor is used to drive and decelerate the axle or the wheel,wherein, during steering intervention, the braking system uses the at least one pressure supply device to control, pressure in at least one wheel brake, and/or the uses the at least one electric drive motor, ...

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Номер записи: 86
24-01-2019 дата публикации

Vehicle Having a Brake Device

Номер: US20190023151A1
Автор: GLINKA MARTIN
Принадлежит:

A vehicle has a brake device with a friction brake unit, an electrical brake unit and a brake control device. In order to provide a vehicle having a reliable and structurally simple brake device, the friction brake unit has brake components made of a composite material and the brake control device includes a monitoring device for monitoring a brake operation performed by the electrical brake unit. 115-. (canceled)16. A vehicle , comprising:a braking device having a friction brake unit, an electrical brake unit and a brake control device;said friction brake unit including brake components made of a composite material; andsaid brake control device having a monitoring device configured for monitoring a braking operation performed by said electrical brake unit.17. The vehicle according to claim 16 , which comprises a drive device claim 16 , and wherein said electrical brake unit includes at least one drive unit of said drive device.18. The vehicle according to claim 17 , wherein at least one of said brake components of said friction brake unit and a drive unit of said drive device are associated with a respective one of a plurality of vehicle wheels claim 17 , and wherein said drive unit is a component of said electrical brake unit.19. The vehicle according to claim 16 , wherein said brake control device is configured to activate a safety mode of said friction brake unit in a case in which said monitoring device detects a limitation of said electrical brake unit.20. The vehicle according to claim 16 , wherein said brake control device has at least two brake control units for controlling said electrical brake unit claim 16 , and wherein said at least two brake control units are redundant to each other or diversely redundant in design.21. The vehicle according to claim 16 , wherein said brake control device has at least two brake control units for controlling said electrical brake unit and said monitoring device comprises at least two monitoring units claim 16 , which are ...

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Номер записи: 87
24-01-2019 дата публикации

BRAKING DEVICE FOR VEHICLE

Номер: US20190023242A1
Автор: KAMIYA Yusuke, OZEKI Yoshimitsu
Принадлежит:

The braking device for a vehicle includes an operation judging portion which judges whether or not the operating amount in the increasing stage is equal to or more than a predetermined threshold amount or whether or not an increasing speed of the operating amount in the increasing stage is equal to or more than a predetermined threshold speed and a control portion which selects the first operating mode as the operating mode from a start of the increasing stage until a first timing or a second timing and selects the second operating mode as the operating mode in the increasing stage after the first timing or the second timing and at the same time maintains the drive hydraulic pressure in the increasing stage after the first timing or the second timing. 1. A braking device for a vehicle capable of switching over an operating mode between a first operating mode in which a master piston or a drive piston which drives the master piston is driven by a drive hydraulic pressure based on a hydraulic pressure of a pressure source in response to a detection result of a brake operation by a driver of the vehicle and a second operating mode in which the brake operation by the driver of the vehicle is mechanically transmitted to the master piston , wherein the braking device for the vehicle comprises:an operation judging portion which judges, in a brake stage including an increasing stage where an operating amount of the brake operation by the driver of the vehicle increases from a value of zero and a decreasing stage where the operating amount decreases to the value of zero, whether or not the operating amount in the increasing stage is equal to or more than a predetermined threshold amount or whether or not an increasing speed of the operating amount in the increasing stage is equal to or more than a predetermined threshold speed; anda control portion which selects the first operating mode as the operating mode, at least from a start of the increasing stage until a first timing ...

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Номер записи: 88
24-01-2019 дата публикации

Method for Providing a Brake Force in a Vehicle

Номер: US20190023247A1
Автор: Baehrle-Miller Frank, Blattert Dieter, Mannherz Edith, Wolff Helmut
Принадлежит:

A method for providing a brake force in a vehicle includes actuating an electric brake motor, which overrides an idling function, generating a hydraulic braking power, and re-actuating the electric brake motor. 1. A method for providing a brake force in a vehicle that has a hydraulic vehicle brake and an electromechanical brake device having an electric brake motor , which displaces a brake piston against a brake disk , the method comprising:actuating the electric brake motor to pass an idle travel of the electric brake motor without a build-up of electromechanical brake force,generating a hydraulic brake force, andactuating the electric brake motor again in order to pass a displacement of the brake piston brought about as a result of the hydraulic brake pressure and to build up electromechanical brake force.2. The method as claimed in claim 1 , wherein the displacement of the brake piston brought about by the hydraulic brake pressure is determined and claim 1 , from the displacement of the brake piston claim 1 , conclusions are drawn relating to an actual hydraulic brake pressure.3. The method as claimed in claim 2 , wherein claim 2 , in the event of a deviation of the actual hydraulic brake pressure from a desired brake pressure claim 2 , a warning signal is produced.4. The method as claimed in claim 1 , wherein the idle travel is determined on two wheel brake devices and claim 1 , in the event of a deviation claim 1 , a warning signal is produced.5. The method as claimed in claim 1 , wherein a hydraulic pressure drop claim 1 , brought about by the build-up of electromechanical brake force claim 1 , is compensated for by actuating a hydraulic actuator.6. The method as claimed in claim 1 , wherein a hydraulic pressure drop claim 1 , brought about by the build-up of electromechanical brake force claim 1 , is taken into account from the outset by an increased hydraulic brake pressure.7. The method as claimed in claim 1 , wherein the method is configured to produce a ...

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Номер записи: 89
23-01-2020 дата публикации

VEHICLE BRAKE SYSTEM USING ELECTRIC PARKING BRAKE IN FAILED BOOST CONDITIONS

Номер: US20200023825A1
Автор: Bunin Seth, Harman Patrick, Littlejohn Deron, Mitchell Craig, Timm Greg
Принадлежит: ZF Active Safety US Inc.

A brake system for a vehicle comprises a driver operable brake pedal coupled to control a brake pressure generating unit to supply hydraulic brake pressure to front and rear hydraulically actuated wheel brakes, and wherein the rear wheel brakes are also configured to be electrically actuated; a sensor arrangement for monitoring the driver's braking intent; the brake system operable in a first mode wherein the front and rear brakes are both hydraulically actuated, and a second mode wherein the front brakes are hydraulically actuated and the rear brakes are electrically actuated, the rear brakes include a caliper assembly including brake pads operable to engage a brake rotor to brake the vehicle, the caliper assembly including a hydraulic actuating mechanism and an electric actuating mechanism, a control connected to the sensor arrangement for operating the electric actuating mechanism to actuate the rear brakes as a function of the driver's braking demand. 1. A vehicle brake system for a vehicle comprising:a brake pedal operable by a vehicle driver and coupled to control a brake pressure generating unit to supply hydraulic brake pressure to front and rear hydraulically actuated wheel brakes, and wherein the rear wheel brakes are also configured to be electrically actuated;a sensor arrangement for monitoring the driver's braking intent;the brake system operable in a first mode wherein the front and rear brakes are both hydraulically actuated, and a second mode wherein the front brakes are hydraulically actuated and the rear brakes are electrically actuated,the rear brakes include a caliper assembly including brake pads operable to engage a brake rotor to brake the vehicle, the caliper assembly including a hydraulic actuating mechanism and an electric actuating mechanism,a control connected to the sensor arrangement for operating the electric actuating mechanism to actuate the rear brakes as a function of the driver's braking demand.2. The brake system according to ...

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Номер записи: 90
28-01-2021 дата публикации

Vehicle control apparatus and vehicle control method

Номер: US20210024044A1
Автор: Su Hwan No
Принадлежит: Mando Corp

A vehicle control apparatus includes: a sensor configured to sense a current value and a voltage value applied to a motor of an actuator of an electronic parking brake (EPB) device; a controller configured to: estimate a speed value of the motor based on the sensed current value and the sensed voltage value; calculate a moving distance value of a spindle of the actuator based on the estimated speed value of the motor; estimate a position value of the spindle based on the calculated moving distance value of the spindle; estimate an EPB clamping force that acts on a brake disc of the EPB device based on the estimated position value of the spindle; calculate an EPB clamping force error compensation value between the estimated EPB clamping force value and a measured EPB clamping force value; and transmit, to the EPB device, a parking force compensation command on which the calculated EPB clamping force error compensation value is reflected to compensate for a parking force of the EPB device.

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Номер записи: 91
28-01-2021 дата публикации

VEHICLE BRAKING DEVICE

Номер: US20210024050A1
Автор: OZEKI Yoshimitsu
Принадлежит: ADVICS CO., LTD.

A brake ECU automatically pressurizes a servo chamber of a master cylinder, and then determines whether a single system failure has occurred in the master system. When the single system failure is detected, a refresh drive is executed so that a fluid pressure chamber provided to the master cylinder is subjected to a negative pressure to cause a brake fluid to forcibly flow from a reservoir into the fluid pressure chamber via a seal member provided inside of the master cylinder and foreign matters caught by the seal member are thus washed out. The brake ECU again automatically pressurizes the servo chamber, determines whether the single system failure has been resolved, and notifies the occurrence of the single system failure when the single system failure has not been resolved. 1. A vehicle braking device comprising:a master cylinder comprising a main cylinder, a master piston drivably housed in the main cylinder, a fluid pressure chamber whose volume changes in response to movement of the master piston, a communication hole formed in the main cylinder so that a reservoir for reserving a brake fluid communicates with an inside of the main cylinder through the communication hole, a seal member made of an elastic material, the seal member provided between an inner peripheral surface of the main cylinder and an outer peripheral surface of the master piston, and the seal member provided between the communication hole and the fluid pressure chamber;a failure detector configured to detect a failure of a master system comprising the master cylinder; anda negative pressure generation controller that, when the failure is detected by the failure detector, moves the master piston to generate a negative pressure in the fluid pressure chamber.2. The vehicle braking device according to claim 1 , further comprising a servo pressure generator configured to supply a servo pressure for moving the master cylinder in a servo chamber formed in the master cylinder claim 1 , irrespective ...

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Номер записи: 92
24-04-2014 дата публикации

INTEGRATED PARKING BRAKE FOR DISK BRAKE

Номер: US20140110196A1
Автор: BURGOON Donald L., Cate Darin, Wagner Mark
Принадлежит: PERFORMANCE FRICTION CORPORATION

A parking brake actuator for a disc brake caliper. The parking brake actuator includes a tapered collet having an axial bore, the tapered collet slidably positionable within a bore of the disc brake caliper; an actuator rod having a first end and a second end, the actuator rod slidably positionable within the axial bore of the collet; means for receiving a force for placing the parking brake actuator in a non-actuated condition; and a first biasing means structured and arranged to apply a force sufficient to place the parking brake actuator in an actuated condition when the force for placing the parking brake in a non-actuated condition is reduced or eliminated. 1. A parking brake actuator for a disc brake caliper , said parking brake actuator comprising:a tapered collet having an axial bore, said tapered collet slidably positionable within a bore of the disc brake caliper;an actuator rod having a first end and a second end, said actuator rod slidably positionable within said axial bore of said collet;means for receiving a force for placing the parking brake actuator in a non-actuated condition; anda first biasing means structured and arranged to apply a force sufficient to place the parking brake actuator in an actuated condition when the force for placing the parking brake in a non-actuated condition is reduced or eliminated.2. The parking brake actuator of claim 1 , wherein said means for receiving a force for placing the parking brake actuator in a non-actuated condition comprises a piston claim 1 , said piston axially aligned with said actuator rod and collet claim 1 , said piston having a first end for contacting said second end of said collet claim 1 , said first end structured and arranged to receive said second end of said actuator rod claim 1 , said piston having a second end structured and arranged to receive the force for placing the parking brake actuator in a non-actuated condition.3. The parking brake actuator of claim 2 , further comprising a second ...

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Номер записи: 93
24-04-2014 дата публикации

METHOD FOR OPERATING A BRAKING SYSTEM

Номер: US20140110994A1
Автор: Gruber Steffen, Peichl Thomas, Ross Scott, Ullrich Thorsten
Принадлежит: Continental Teves AG & Co. oHG

The invention relates to a method for operating a braking system, including a brake booster, which is divided into at least one vacuum chamber and at least one working chamber by at least one movable partition, wherein at least one vacuum chamber is connected, or can be connected, to a vacuum source for creating a vacuum, and further including at least one sensor, which detects at least one variable such as travel and/or angle and/or force of a brake pedal actuation and/or a brake pressure that is built up in at least one main brake cylinder connected to the brake booster in accordance with a brake pedal actuation. According to the invention, the remaining vacuum in at least one vacuum chamber is estimated on the basis of at least one of the detected variables by considering actuations already performed. The invention further relates to a braking system and to the use thereof. 1. A method for operating a brake system having a brake booster which is divided into at least one negative-pressure chamber and at least one working chamber by at least one movable partition , wherein at least one negative-pressure chamber is or can be connected to a negative-pressure source for the build-up of a negative pressure , and having at least one sensor which detects at least one variable such as travel and/or angle and/or force of a brake pedal actuation and/or a brake pressure that is built up , in accordance with a brake pedal actuation , in at least one master brake cylinder that is connected to the brake booster , wherein an estimation of the remaining negative pressure in at least one negative-pressure chamber is performed on the basis of at least one of the detected variables taking into consideration past brake pedal actuations.2. The method as claimed in claim 1 , wherein in accordance with or proportionally to at least one of the detected variables claim 1 , a braking torque is generated by virtue of at least one electric drive of the vehicle being operated as a generator ...

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Номер записи: 94
04-02-2016 дата публикации

MOTOR VEHICLE HAVING A HYBRID DRIVE

Номер: US20160031327A1
Автор: Poppe Frank
Принадлежит:

Motor vehicle having a hybrid drive which includes at least one wheel which can be driven by an electric machine, wherein a recuperation device is provided which permits recuperation of energy in a recuperation phase during a braking process, wherein a brake system is provided with a pedal, at least one master brake cylinder and at least one wheel brake which fluidically activates the wheel brake on the basis of a movement of the pedal by a brake pressure, wherein a pressure-reducing valve device is provided which reduces the brake pressure in the recuperation phase, and wherein a compensator is provided for compensating a hydraulic effect of the pressure-reducing valve device, wherein in the effective range of the pressure-reducing valve device two master brake cylinders are provided whose pistons are rigidly coupled to one another via a connecting element. 1. A motor vehicle having a hybrid drive which comprises at least one wheel which can be driven by an electric machine , said motor vehicle comprising:a recuperation device that permits recuperation of energy in a recuperation phase during a braking process,a brake system with a pedal and at least one master brake cylinder which fluidically activates at least one wheel brake on the basis of a movement of the pedal,a pressure-reducing valve device that reduces the brake pressure in the recuperation phase, anda compensator for compensating a hydraulic effect of the pressure-reducing valve device,wherein in an effective range of the pressure-reducing valve device, two master brake cylinders are provided whose pistons are rigidly coupled to one another via a connecting element.2. The motor vehicle as claimed in claim 1 , further comprising a balance beam which is operatively connected to the pedal and adjoined in each case by a master brake cylinder.3. The motor vehicle as claimed in claim 1 , wherein a tandem slave cylinder is provided as a first master brake cylinder of the two master brake cylinders.4. The motor ...

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Номер записи: 95
01-02-2018 дата публикации

Pneumatic trailer brake circuit with breakaway detection and method thereof

Номер: US20180029570A1
Автор: Brandon J. MCMILLEN, Jordan TAGTOW, Troy E. Schick
Принадлежит: Deere and Co

A method of detecting a leak in an air trailer brake circuit of a trailer includes providing a controller, a base valve, a first sensor, a second sensor, a leak control valve having a solenoid, a pneumatic fluid supply, a first brake output, and a second brake output. The method further includes supplying a first pressure to an inlet of the base valve and outputting a second pressure from an outlet of the base valve. The first pressure is detected with the first sensor and the second pressure is detected with the second sensor. The method also includes communicating the detected first pressure and the second pressure to the controller, and comparing a difference between first pressure and the second pressure to a threshold. A leak is detected in the air trailer brake circuit if the difference satisfies the threshold.

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Номер записи: 96
01-02-2018 дата публикации

Vacuum Brake Booster Having a Throttle Control Valve Assembly

Номер: US20180029580A1
Автор: Calvo Martinez José Manuel, HOFMANN Martin, Warkentin Paul, Wingender Kurt
Принадлежит: LUCAS AUTOMOTIVE GMBH

A vacuum brake booster for a motor vehicle brake system, comprising a displaceable force input member that is coupled to or can be coupled to a brake pedal, a chamber arrangement arranged in a booster housing having at least one working chamber and at least one vacuum chamber, which are separated from one another via at least one movable wall, a control valve assembly that can be actuated by the force input member, and a force output member for transmitting an operating force to a downstream brake system. The at least one working chamber can be fluidically connected optionally to a negative pressure source or the atmosphere by way of the control valve assembly. The control valve assembly comprises a control valve housing, in which an actuating piston that is coupled with the force input member s displaceably arranged, and a first valve seat, and a second valve seat. Upon an actuation of the force input member, a throttle sleeve can be displaced from the initial position relative to the control valve housing by a predetermined functional path. During the displacement, the throttle sleeve is in abutment with the actuating piston such that a fluidic connection between the at least one working chamber and the ambient atmosphere by way of a throttle window is present. Upon exceeding the functional path, the throttle sleeve lifts off the actuating piston. 2. The vacuum brake booster according to claim 1 ,wherein the flow restricting sleeve is displaceable by the predetermined functional path from the normal position relative to a valve element upon an actuation of the force input member.3. The vacuum brake booster according to claim 2 ,wherein the flow restricting sleeve has at least one stop flange which is configured to be brought at least sectionally into contact with a stop face of the valve element or another component of the control valve assembly.4. The vacuum brake booster according to claim 3 ,wherein the stop flange of the flow restricting sleeve is spaced apart ...

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Номер записи: 97
29-01-2015 дата публикации

BRAKING CONTROL DEVICE AND CONTROL METHOD

Номер: US20150032353A1
Автор: Ajiro Keigo, Higuchi Takuya, Nakamura Kensuke
Принадлежит: NISSAN MOTOR CO., LTD.

A hybrid vehicle includes a braking device configured to apply a frictional braking torque to a vehicle wheel in response to movement of an input member of a brake pedal, an electric motor configured to apply a regenerative braking torque to the vehicle wheel, and a control unit. During braking, the control unit is configured to determine a limit value of the regenerative braking torque that can be generated in accordance with an operating condition of the charging device or the electric motor, and reduce a ratio of the regenerative braking torque to the frictional braking torque before the regenerative braking torque reaches the limit value. 1. A braking control device comprising:a frictional braking device configured to apply a frictional braking torque to a vehicle wheel in response to movement of an input member of a brake pedal;an electric motor configured to apply a regenerative braking torque to the vehicle wheel;a charging device configured to be charged with regenerative power generated by the electric motor;a detection unit configured to detect a displacement amount of the input member; anda control unit configured to determine a required braking torque of a driver on the basis of the displacement amount detected by the detection unit, and allocate the required braking torque to the regenerative braking torque and the frictional braking torque,wherein the control unit is configured to determine a limit value of the regenerative braking torque that can be generated in accordance with an operating condition of the charging device or the electric motor, and reduce a proportion of the regenerative braking torque in the required braking torque after the detection unit detects the displacement amount of the input member and before the regenerative braking torque reaches the limit value.2. The braking control device as defined in claim 1 , wherein the control unit comprises:a torque calculation unit configured to calculate the required braking torque in ...

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Номер записи: 98
31-01-2019 дата публикации

METHOD FOR OPERATING A BRAKE SYSTEM FOR MOTOR VEHICLES, AND BRAKE SYSTEM

Номер: US20190031162A1
Автор: Besier Marco, Roll Georg
Принадлежит:

Method for operating a brake system of a motor vehicle having a hydraulic service brake device with hydraulically actuated wheel brakes on at least one front axle of the motor vehicle, and a parking brake device with wheel brakes, which can be actuated in each case by an electromechanical actuator, on a rear axle of the motor vehicle, wherein a motor vehicle actual longitudinal deceleration is measured, wherein during a braking operation by the hydraulic service brake device a braking operation is carried out by the parking brake device while the motor vehicle is traveling, wherein a motor vehicle setpoint longitudinal deceleration which is to be achieved is determined, and the electromechanical actuators of the parking brake device are actuated in such a way that the motor vehicle actual longitudinal deceleration is adjusted to the motor vehicle setpoint longitudinal deceleration. 1. A method for operating a brake system of a motor vehicle having a hydraulic service brake device with hydraulically actuated wheel brakes on at least one front axle of the motor vehicle , and a parking brake device with wheel brakes , which can be actuated in each case by an electromechanical actuator , on a rear axle of the motor vehicle , the method comprising:measuring a motor vehicle actual longitudinal deceleration, wherein during a braking operation by the hydraulic service brake device a braking operation is carried out by the parking brake device while the motor vehicle is traveling,determining a motor vehicle setpoint longitudinal deceleration which is to be achieved, andactuating the electromechanical actuators of the parking brake device in such a way that the motor vehicle actual longitudinal deceleration is adjusted to the motor vehicle setpoint longitudinal deceleration.2. The method as claimed in claim 1 , wherein the motor vehicle setpoint longitudinal deceleration is determined on the basis of a brake pressure of the service brake device.3. The method as claimed in ...

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Номер записи: 99
31-01-2019 дата публикации

BRAKE SYSTEM HAVING TWO PRESSURE-PROVIDING DEVICES AND METHOD FOR OPERATING A BRAKE SYSTEM

Номер: US20190031165A1
Автор: Besier Marco, Böhm Jürgen, Drumm Stefan, Jungbecker Johann, Linhoff Paul, Roll Georg, Stauder Peter
Принадлежит: Continental Teves AG & Co. oHG

A brake installation for a motor vehicle. First and second pressure provision devices build up brake pressure in the wheel brakes. The first pressure device connected to a first wheel brake of a first brake circuit and to a second wheel brake of the first brake circuit. The second pressure device connected to a third wheel brake of a second brake circuit and to a fourth wheel brake of the second brake circuit. Each pressure device is respectively activated by an open-loop/closed-loop control unit. A first hydraulic line, with a normally open isolating valve, connects the first wheel brake line of the first brake circuit to the first wheel brake line of the second brake circuit. A second hydraulic line, with a normally open isolating valve, connects the second wheel brake line of the first brake circuit to the second wheel brake line of the second brake circuit. 1. A brake installation for a motor vehicle , having four hydraulic wheel brakes which are assigned in each case to one vehicle wheel , comprising:a brake pedal, which is assigned a travel sensor arrangement for identifying a braking demand, and having a first and a second pressure provision device for building up brake pressure in the wheel brakes,wherein the first pressure provision device is hydraulically connected via a wheel brake line to a first wheel brake assigned to a first brake circuit and is hydraulically connected via a wheel brake line to a second wheel brake assigned to the first brake circuit, and wherein the second pressure provision device is hydraulically connected via a wheel brake line to a third wheel brake assigned to a second brake circuit and is hydraulically connected via a wheel brake line to a fourth wheel brake assigned to the second brake circuit, wherein each pressure provision device is respectively activated by an open-loop and closed-loop control unit,a first hydraulic connecting line, into which an isolating valve which is open when electrically deenergized is connected, ...

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Номер записи: 100