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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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Применить Всего найдено 3546. Отображено 100.
19-01-2012 дата публикации

Device for estimating state quantity of skid motion of vehicle

Номер: US20120016646A1
Автор: Toru Takenaka
Принадлежит: Honda Motor Co Ltd

A device for estimating the state quantity of a skid motion of a vehicle is provided with an element which finds road surface reaction force model values of respective wheels and a skid motion state quantity model value using a vehicle model including a friction characteristic model between the wheels and the road surface, an element which finds the deviation between the lateral acceleration model value generated in a predetermined position of the vehicle by the resultant force of the road surface reaction force model values and the lateral acceleration detected value indicated by the output of an actual lateral acceleration detecting means, and an element which determines, as the estimated value of the skid motion state quantity, a value obtained by adding a value obtained by passing the deviation through a filter having a high-cut characteristic to the skid motion state quantity model value.

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Номер записи: 1
03-05-2012 дата публикации

Method and system for determining a reference yaw rate for a vehicle

Номер: US20120109458A1
Автор: David M. Sidlosky
Принадлежит: GM GLOBAL TECHNOLOGY OPERATIONS LLC

The method and system described herein may be used to determine a reference yaw rate (γ ref ) for a vehicle chassis control system, and may do so across a wide spectrum of vehicle operating conditions. These conditions may include, for example, when the vehicle is being driven: at low and high vehicle speeds, in forward and reverse directions, with front-, rear- and all-wheel steering systems, according to subtle and aggressive driving maneuvers, and on roads with flat or banked surfaces, to cite a few of the potential scenarios. According to an exemplary embodiment, the method and system take into account certain tire dynamics, such as the relaxation length (λ) of the tires, when estimating the reference yaw rate (γ ref ). Once an accurate reference yaw rate (γ ref ) is determined, the vehicle chassis control system may use this estimate to control one or more actuators that can influence the yaw rate of the vehicle. Some non-limiting examples of systems that may include such actuators are chassis systems, brake systems, steering systems, suspension systems, safety systems, stability control systems, traction control systems, torque control systems, or any other system that can affect the vehicle yaw rate. It is also possible for the method and system described herein to determine a reference lateral velocity (V yref ) for the vehicle as well.

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Номер записи: 2
24-01-2013 дата публикации

System and method for tracking the path of a vehicle

Номер: US20130024048A1
Автор: Bertrand Gruyelle, Christophe Bouet, Jannick Auvinet, THIERRY PHILIPPE
Принадлежит: RENAULT SAS

A system for tracking a path of a motor vehicle, the system including: an instantaneous speed sensor on each wheel of front and rear axle systems; a mechanism to calculate speed loss between wheels of a single axle system; a mechanism to calculate difference between the speed losses of each axle system; and a mechanism to compare the difference with a stored threshold value. A method for tracking a path of a motor vehicle includes: calculating speed losses for wheels of front and rear axle systems; calculating speed loss difference between each front and rear axle system; and comparing the speed loss difference with a stored threshold value.

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Номер записи: 3
07-02-2013 дата публикации

Method for operating a braking system

Номер: US20130033097A1
Автор: Gunther Buschmann, Harald Biller
Принадлежит: Individual

A system and method for operating a hydraulic braking system) for motor vehicles with an electrically controllable pressure provision device), a high-pressure accumulator, which can be connected to the pressure provision device via a hydraulic connection), in which an electrically controllable shutoff valve is arranged, wheel brakes, which can be supplied with pressure medium by means of the pressure provision device and/or the high-pressure accumulator. An electronic control and regulating unit is provided for actuating the electrically controllable pressure provision device and/or the electrically controllable shutoff valve so as to regulate the hydraulic pressure which is provided by the pressure provision device and the high-pressure accumulator If a pressure buildup is carried out by activation of the pressure provision device, the high-pressure accumulator is connected only temporarily by at least partial opening of the shutoff valve.

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Номер записи: 4
23-01-2014 дата публикации

Braking force generator

Номер: US20140025272A1
Автор: Yuki Ito
Принадлежит: Honda Motor Co Ltd

The object of the present invention is to provide a braking force generator capable of preventing a braking force from varying, even if an ON signal of an IG switch is not transmitted. The braking force generator includes a hydraulic pressure generation unit that becomes in an operation state according to an ON state of the IG switch of a vehicle or an opening and closing operation of an opening and closing member of the vehicle and generates a braking force according to an electrical signal based on an operation amount of a driver, and a conditional stop unit that puts the hydraulic pressure generation unit in an operation stop state if an OFF state of the IG switch continues for a predetermined time after the hydraulic pressure generation unit becomes in the operation state according to the opening and closing operation of the opening and closing member.

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Номер записи: 5
07-01-2021 дата публикации

Electropneumatic handbrake system for commercial vehicles with spring-loaded parking brakes

Номер: US20210001824A1
Автор: Julian van Thiel, Thomas Schmidt
Принадлежит: WABCO Europe BVBA

An electropneumatic brake system, for a commercial vehicle which is provided for pulling a trailer, includes at least one service brake circuit configured to activate service brake actuators, a parking brake circuit having parking brake actuators on at least one axle, a trailer brake circuit configured to provide a trailer brake pressure at a trailer brake pressure port, and a manually actuatable operating unit in a driver's cab. The manually actuatable operating unit has a first operating element and a second operating element. In the case of actuation of the first operating element when the vehicle is driving, the parking brake actuators are activated and a trailer brake pressure is output at the trailer brake pressure port. In the case of actuation of the second operating element when the vehicle is driving, only a trailer brake pressure is output.

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Номер записи: 6
05-01-2017 дата публикации

CALIBRATION METHOD FOR AN ELECTRO-HYDRAULIC MOTOR VEHICLE BRAKING SYSTEM AND ASSOCIATED CALIBRATION DEVICE

Номер: US20170001615A1
Автор: ADLER Vanessa, Naether Niko, Schaust Karlheinz, Schlafke Kay
Принадлежит: LUCAS AUTOMOTIVE GMBH

A calibration method is specified for an electro-hydraulic motor vehicle brake system. The brake system comprises a piston for building up a hydraulic pressure in the brake system, a first actuator having an electric motor, and a second actuator having a brake pedal interface. The first actuator and the second actuator are both capable of activating the piston, wherein a first sensor system detects a change in state of the first actuator, and a second sensor system detects a change in state of the second actuator. The calibration method starts with actuation of the electric motor, in order to activate the piston by means of the first actuator, wherein the second actuator follows the piston activation. During the piston activation, a first signal which is generated by the first sensor system and which permits a conclusion to be drawn about an extent of the piston activation, as well as a second signal which is generated by the second sensor system are detected. Subsequently, the first signal is calibrated on the basis of the second signal, or vice versa. 1. A calibration method for an electro-hydraulic motor vehicle brake system which comprises a piston for building up a hydraulic pressure in the brake system , a first actuator having an electric motor and a second actuator having a brake pedal interface , wherein the first actuator and the second actuator are capable of activating the piston , and wherein a first sensor system is capable of detecting a change in state of the first actuator , and a second sensor system is capable of detecting a change in state of the second actuator , the method comprising:actuating the electric motor in order to activate the piston by means of the first actuator, wherein the second actuator follows the piston activation; 'calibrating the first signal on the basis of the second signal, or vice versa.', 'detecting, during the piston activation, a first signal which is generated by the first sensor system and permits a conclusion to be ...

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Номер записи: 7
04-01-2018 дата публикации

BRAKE-BY-WIRE SYSTEM FOR A VEHICLE WITH AN ADJUSTABLE BRAKE PEDAL EMULATOR ASSEMBLY

Номер: US20180001875A1
Автор: Houtman Alan J., Kilmurray Paul A., KRUEGER ERIC E., Pennala Brandon C.
Принадлежит:

A brake pedal assembly of a brake-by-wire system of a vehicle includes a support structure, a brake pedal pivotally engaged to the support structure at a first pivot axis, and a brake pedal emulator assembly. The brake pedal emulator assembly extends between and is pivotally engaged to the brake pedal and the support structure at respective second and third pivot axis. The brake pedal emulator assembly includes a brake pedal emulator and an adjustment mechanism aligned along a centerline intersecting the second and third pivot axis. The brake pedal emulator is constructed and arranged to displace axially when the brake pedal is actuated, and the adjustment mechanism is constructed and arranged to adjust axial displacement. 1. A brake pedal assembly comprising:a support structure;a brake pedal pivotally engaged to the support structure at a first pivot axis; anda brake pedal emulator assembly extending between and pivotally engaged to the brake pedal and the support structure at respective second and third pivot axis, the brake pedal emulator assembly including a brake pedal emulator and an adjustment mechanism aligned along a centerline intersecting the second and third pivot axis, and wherein the brake pedal emulator is constructed and arranged to displace axially when the brake pedal is actuated and the adjustment mechanism is constructed and arranged to adjust axial displacement, wherein the adjustment mechanism includes a threaded rod constructed and arranged to rotate about the centerline and a carriage threadably coupled to the threaded rod for axial movement along the centerline and engaged to the brake pedal emulator.2. (canceled)3. The brake pedal assembly set forth in claim 1 , wherein the adjustment mechanism includes a base member pivotally engaged to the support structure at the third pivot axis and an electric motor engaged to the base member and configured to rotate the threaded rod.4. The brake pedal assembly set forth in claim 3 , wherein the brake ...

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Номер записи: 8
02-01-2020 дата публикации

METHOD FOR OPERATING A BRAKING SYSTEM AND BRAKING SYSTEM

Номер: US20200001846A1
Автор: Kohl Andreas, Wickenhöfer Thorsten
Принадлежит: Continental Teves AG & Co. oHG

A braking system for vehicles includes wheel brakes, a pressure-providing device for actuating the wheel brakes, a master brake cylinder having a primary pressure chamber, a secondary pressure chamber, and a secondary piston. The primary pressure chamber is separated from a first set of the wheel brakes by a first, normally open separating valve, and the secondary pressure chamber is separated from a second set of the wheel brakes by a second, normally open separating valve. A pressure medium reservoir is connected to the secondary pressure chamber in the unactuated state of the secondary piston, the braking system is activated in order to actively build up pressure in the brakes in a by-wire operating mode by the pressure-providing device. In the event of a pressure medium surplus in the wheel brakes, the second separating valve is opened if a release of the brake pedal by the driver is detected. 1. A braking system for motor vehicles , comprising:hydraulically actuatable wheel brakes;an electrically controllable pressure-providing device for hydraulically actuating the wheel brakes, the controllable pressure-providing device having a cylinder-piston arrangement with a hydraulic pressure chamber, controllable pressure-providing device having a pressure piston displaceable by an electric motor and a rotation-translation gear mechanism;an actuating device actuatable by a brake pedal, the actuating device including a tandem master brake cylinder with a primary pressure chamber, into which a primary piston is pushed on actuation of a brake pedal, and a secondary pressure chamber and a floatingly mounted secondary piston, wherein the primary pressure chamber can be hydraulically separated from a first set of the wheel brakes a first, normally open separating valve, and wherein the secondary pressure chamber can be hydraulically separated from a second set of the wheel brakes by a second, normally open separating valve;a pressure medium reservoir under atmospheric ...

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Номер записи: 9
03-01-2019 дата публикации

SYSTEM AND METHOD FOR SENSING PEDAL ROD TO PISTON ROD GAP IN A BRAKE BOOST ASSIST SYSTEM OF A MASTER CYLINDER

Номер: US20190001940A1
Автор: Ozsoylu Suat Ali, ROBERTS Curt M.
Принадлежит:

A brake boost assist system for use with a master cylinder of a motor vehicle braking system, includes an inductive sensing system. The inductive sensing system has sensing devices carried on an input member and an output member, where the input and output members are coupled to respective ones of an input rod and an output rod of the brake boost assist system. Movement of the input and output members relative to one another, and relative to a fixed element of the inductive sensing system positioned within the brake boost assist system, enables an accurate estimation of the distance of a pedal gap which separates faces of the input and output rods. The accurate estimation of the pedal gap distance enables a more accurate determination to be made of the braking force required for any given pedal stroke input by an operator of the vehicle during a braking action. 1. A brake boost assist system for use with a master cylinder of a motor vehicle braking system , the brake boost assist system comprising: a fixed sensing component fixedly disposed within the brake boost assist system;', 'an axially movable input member operably associated with an input rod, the input rod in turn associated with a brake pedal of the vehicle, the input member movable in response to movement of the input rod and further being movable in proximity to the fixed sensing component, the axially movable input member including a first sensing device;', 'an output member generally axially aligned with the input member and adapted to be moved axially by the input member, the output member being operably associated with an output rod of the brake boost assist system and including a second sensing device;', 'the first and second sensing devices arranged to simulate an axial pedal gap separating faces of the input and output rods; and', 'wherein the inductive sensing system is responsive to movement of at least one of the input and output members relative to the other to provide an output signal ...

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Номер записи: 10
13-01-2022 дата публикации

CONTROLLING METHOD FOR AN ACTUATOR, ACTUATOR, AND ELECTROMECHANICAL BRAKE SYSTEM

Номер: US20220009464A1
Автор: Luo Jiajun, Rylander Christian
Принадлежит:

This present disclosure provides a controlling method for an actuator (), an actuator (), and an electromechanical brake system of brake technology. The controlling method comprises: receiving a brake demand; controlling an electric motor () based on the brake demand; if the brake demand satisfies a preset stationary condition within a preset period, controlling a brake force holding device () to lock a shaft. In this way, frequent variations of the brake demand caused by interference from ambient disturbance or the driver's unsteady brake instructions may be prevented so that the actuator can be locked timely, thereby maintaining a continuous brake torque output with low power consumption or zero power consumption to provide a continuous brake force to the vehicle. 1. A controlling method for an actuator , the actuator comprising an electric motor with a shaft and a brake force holding device capable of locking the shaft , the controlling method comprising:receiving a brake demand;controlling the electric motor based on the brake demand; andif the brake demand satisfies a preset stationary condition within a preset period, controlling the brake force holding device to lock the shaft.2. The controlling method for an actuator according to claim 1 , wherein a desired electric motor rotated position of the electric motor is generated dependent on the brake demand.3. The controlling method for an actuator according to claim 2 , wherein the controlling method further comprises:filtering the desired electric motor rotated position; andthe preset stationary condition further includes that: a filtered desired electric motor rotated position is located within a preset stationary zone.4. The controlling method for an actuator according to claim 2 , wherein the controlling method further comprises: smoothing the desired electric motor rotated position.5. The controlling method for an actuator according to claim 3 , wherein the controlling method further comprises: smoothing ...

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Номер записи: 11
04-01-2018 дата публикации

SYSTEMS, APPARATUSES, AND METHODS FOR MONITORING PRESSURE IN A HYDRAULIC SYSTEM

Номер: US20180005462A1
Автор: Dhorajiya Ankitkumar P., MILTON Dale E.
Принадлежит: CATERPILLAR INC.

A method, system, and apparatus to determine a malfunction or an abnormal pressure condition in a hydraulic system over a time period are provided. The method, system, and apparatus include monitoring hydraulic accumulator charge time, hydraulic accumulator discharge time, and hydraulic pump pressure over the time period, and determining whether the monitored hydraulic accumulator charge time, hydraulic accumulator discharge time, and hydraulic pump pressure are within respective predetermined ranges. A maintenance notification is output responsive to at least one of the monitored hydraulic accumulator charge time, hydraulic accumulator discharge time, and hydraulic pump pressure being outside the respective predetermined ranges during the time period. 1. A mining truck comprising:a first hydraulic system to drive traction wheels of the mining truck;a second hydraulic system to operate a steering system of the mining truck; and a hydraulic brake pump;', 'a hydraulic brake accumulator in fluid communication with the hydraulic brake pump and the braking components of the mining truck;', 'a first sensor to sense pressure characteristics of the hydraulic brake pump;', 'a second sensor to sense pressure characteristics of the hydraulic brake accumulator; and', 'circuitry electrically coupled to the first sensor and the second sensor, and configured to:', 'receive a plurality of signals from the first sensor regarding sensed pressure characteristics of the hydraulic brake pump over a predetermined number of brake actuation cycles, the sensed pressure characteristics of the hydraulic brake pump including information regarding a maximum brake pump pressure for each of the brake actuation cycles,', 'receive a plurality of signals from the second sensor regarding sensed pressure characteristics of the hydraulic brake accumulator over the predetermined number of brake actuation cycles, the sensed pressure characteristics of the hydraulic brake accumulator including information ...

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Номер записи: 12
20-01-2022 дата публикации

ELECTRONIC BRAKE SYSTEM

Номер: US20220017051A1
Автор: KIM Jin Seok
Принадлежит:

Provided is an electronic brake system including, a master cylinder including a first piston connected to a pedal and a second piston configured to partition a first master chamber and a second master chamber provided in front of the first piston, a reservoir in which a braking fluid is stored, the reservoir connected to the first master chamber by a first reservoir passage, and connected the second master chamber by a second reservoir passage, a hydraulic pressure supply device configured to generate a hydraulic pressure by an electrical signal output in response to a displacement of the pedal, a first connection line configured to connect the first master chamber to a first hydraulic circuit, a second connection line configured to connect the second master chamber to a second hydraulic circuit, and a third connection line configured to connect the hydraulic pressure supply device to the reservoir, wherein a mechanical part including the reservoir and the master cylinder is installed in a first block, and an electronic part including the hydraulic pressure supply device and the first hydraulic circuit, the second hydraulic circuit is installed in a second block, and each of the first connection line, the second connection line, and the third connection line is provided to connect the first block to the second block. 1. An electronic brake system comprising:a master cylinder including a first piston connected to a pedal and a second piston configured to partition a first master chamber and a second master chamber provided in front of the first piston;a reservoir in which a braking fluid is stored, the reservoir connected to the first master chamber by a first reservoir passage, and connected the second master chamber by a second reservoir passage;a hydraulic pressure supply device configured to generate a hydraulic pressure by an electrical signal output in response to a displacement of the pedal;an electronic control unit configured to control the hydraulic ...

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Номер записи: 13
14-01-2021 дата публикации

PEDAL FREE EMULATOR AND BRAKE-BY-WIRE SYSTEM

Номер: US20210009098A1
Автор: Luo Dongqiang, Reuter David Fredrick
Принадлежит:

A pedal feel emulator includes: a body; a displacement piston provided inside the body, the displacement piston being movable along an axial direction of the body, the displacement piston has a hollow part at lower part, and the hollow part is surrounded by a surrounding wall; a retainer provided fixed inside the body, the retainer being under the displacement piston; a first elastic object provided between the displacement piston and the retainer, the first elastic object being retained by the retainer; and a second elastic object provided inside the hollow part of the displacement piston, an air gap is provided between bottom surface of the second elastic object and top surface of the retainer. A brake-by-wire system including the pedal feel emulator is also disclosed herein. 1. A pedal feel emulator , comprising:a body;a displacement piston disposed in the body and movable along an axial direction, wherein, the displacement piston defines a hollow part located at a lower part and the hollow part is surrounded by a surrounding wall;a retainer disposed in the body and located under the displacement piston;a first elastic object disposed between the displacement piston and the retainer and retained by the retainer; anda second elastic object disposed inside the hollow part of the displacement piston and space from the retainer and defining an air gap extending between a bottom surface of the second elastic object and a top surface of the retainer.2. The pedal feel emulator according to wherein the surrounding wall overlaps with an upper part of a side wall of the retainer along a radial direction.3. The pedal feel emulator according to further including:a first step portion is provided on a side wall of the retainer,an outside diameter of the first step portion being larger than an inside diameter of the surrounding wall, anda distance between a bottom end of the surrounding wall and the first step portion being larger than the dimension of the air gap along the ...

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Номер записи: 14
14-01-2021 дата публикации

MASTER CYLINDER AND BRAKE-BY-WIRE SYSTEM

Номер: US20210009099A1
Автор: Luo Dongqiang, Reuter David Fredrick
Принадлежит:

A master cylinder includes: a cylinder body; an isolation wall provided inside the cylinder body, arranged between a first chamber and a second chamber to isolate the first chamber and the second chamber, wherein, the isolation wall is integrally formed with the cylinder body; a first piston; a second piston; a first rod provided in connection with the first piston; a second rod provided inside the cylinder body, being in connection with the first piston, wherein, the second rod is supported in the isolation wall; and a cap provided at a first opening of the cylinder body, the first opening is at an end of the second chamber along the axial direction. A brake-by-wire system including the master cylinder is also disclosed herein. 1. A master cylinder , comprising:a cylinder body defining a first chamber and a second chamber arranged along an axial direction;an isolation wall provided inside the cylinder body, located between the first chamber and the second chamber to isolate the first chamber and the second chamber, wherein, the isolation wall is integrally formed with the cylinder body;a first piston at least partially disposed in the first chamber and movable along the axial direction;a second piston provided in the second chamber and movable in the axial direction;a first rod disposed in connection with the first piston;a second rod provided inside the cylinder body, being in connection with the first piston, wherein, the second rod is supported in the isolation wall;a cap provided at a first opening of the cylinder body, wherein, the first opening is at an end of the second chamber along the axial direction;a snap ring provided in the second chamber with the snap ring being attached to a bore of the second chamber and arranged behind the cap; anda first spring connecting the snap ring and the second piston.2. (canceled)3. (canceled)4. A master cylinder , comprising:a cylinder body defining a first chamber and a second chamber arranged along an axial direction;an ...

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Номер записи: 15
10-01-2019 дата публикации

AUTOMATIC CONTROL BRAKING SYSTEM FOR VEHICLES

Номер: US20190009763A1
Автор: ARIENTI ROBERTO, CANTONI CARLO, ODONI ANDREA
Принадлежит: FRENI BREMBO S.P.A.

A braking system for vehicles having a master cylinder, and at least one braking device. The master cylinder may be provided with a first and a second output circuit, containing respectively a first and second brake fluid. The first output circuit may be fluidically connected to a braking simulator and the second output circuit may be fluidically connected to the at least one braking device for its actuation. An automatic hydraulic actuation unit operatively connected to the master cylinder by a hydraulic actuation circuit traversed by an actuation fluid distinct from the first and second brake fluid may be provided. A processing and control unit of the system that supervises the operation of the braking systems may also be provided. 116-. (canceled)18. The braking system for vehicles according to claim 17 , wherein the first and second float are interconnected so that claim 17 , in a condition of automatic operation of the braking system claim 17 , a first actuating stroke of the first float is less than or equal to a second actuating stroke of the second float.19. The braking system for vehicles according to claim 17 , wherein the first float slides at least partly coaxially inside the second float.20. The braking system for vehicles according to claim 17 , wherein the first float is provided with an undercut in an actuation direction of said first and second actuating strokes claim 17 , the undercut being configured to drag with it in translation the second float so that the first actuating stroke of the first float is always less than or equal to the second actuating stroke of the second float.21. The braking system for vehicles according to claim 17 , wherein the first float has a first pump head housed so as to slide in a first delivery volume claim 17 , the second float is provided with a second pump head housed so as to slide in a second delivery volume claim 17 , said first and second delivery volumes being fluidically separate from each other.22. The ...

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Номер записи: 16
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: 17
03-02-2022 дата публикации

BRAKE SYSTEM INCLUDING A MASTER CYLINDER WITH AN ELASTIC PEDAL FEEL ELEMENT

Номер: US20220032889A1
Автор: CHIANG I-Che, Feigel Hans-Jorg, KUMARI Priti, TARANDEK Kristijan
Принадлежит:

A brake system comprises a reservoir; a brake pedal; a master cylinder including a first master chamber, a second master chamber, a first master piston, and a second master piston; a first hydraulic circuit including at least one first hydraulic wheel brake; a second hydraulic circuit including at least one second hydraulic wheel brake; and a hydraulic pressure supplier including an actuator for pressurizing the first hydraulic circuit and the second hydraulic circuit depending on an operation of the brake pedal in a normal operating mode. The master cylinder further comprises a locking chamber and an elastic pedal feel element arranged in the first master chamber to be in contact with the first master piston and the second master piston for generating a pedal force when the brake pedal is operated while the second master piston is locked in the normal operating mode. 1. A brake system , comprisinga reservoir for storing a brake fluid;a brake pedal;a master cylinder including a first master chamber, a second master chamber, a first master piston, and a second master piston the first master piston being directly displaceable by operating the brake pedal and the second master piston being a floating piston and separating the first master chamber, which is between the first master piston and the second master piston, from the second master chamber;a first hydraulic circuit including at least one first hydraulic wheel brake;a second hydraulic circuit including at least one second hydraulic wheel brake; anda hydraulic pressure supplier including an actuator for pressurizing the first hydraulic circuit and the second hydraulic circuit depending on an operation of the brake pedal in a normal operating mode of the brake system,wherein the first master chamber is hydraulically connected to the first hydraulic circuit for pressurizing the first hydraulic circuit in an emergency mode of the brake system and the second master chamber is hydraulically connected to the second ...

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Номер записи: 18
03-02-2022 дата публикации

Modular Hydraulic Brake Actuation Assembly

Номер: US20220032890A1
Автор: Biguinet Benoit
Принадлежит:

A hydraulic brake actuation assembly with a first and a second spool is disclosed. The hydraulic brake actuation assembly includes a first and a second subassembly which are configured to be mounted to each other in a pre-assembled manner. The first subassembly includes the first spool and a first actuation piston which are moveable along a first axis respectively. At least one first spring is located between the first spool and the first actuation piston along the first axis. The first subassembly includes the second spool and a second actuation piston which are moveable along a second axis respectively. At least one second spring is located between the second spool and the second actuation piston along the second axis. The first and the second axis are parallel to each other. The second subassembly includes a third and a fourth actuation piston. The third actuation piston is moveable along the first axis. It has a third contact surface which is able to contact a first contact surface of the first actuation piston. The fourth actuation piston is moveable along the second axis. It has a fourth contact surface which is able to contact a second contact surface of the second actuation piston. 1. A hydraulic brake actuation assembly with a first and a second spool , comprising:a first subassembly and a second subassembly which are configured to be mounted to each other in a pre-assembled manner,wherein the first subassembly comprises the first spool and a first actuation piston which are moveable along a first axis respectively,wherein at least one first spring is located between the first spool and the first actuation piston along the first axis,wherein the first subassembly comprises the second spool and a second actuation piston which are moveable along a second axis respectively,wherein at least one second spring is located between the second spool and the second actuation piston along the second axis,wherein the first axis and the second axis are parallel to each ...

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Номер записи: 19
19-01-2017 дата публикации

Brake Apparatus

Номер: US20170015290A1
Автор: Asahi Watanabe, Toshiya Oosawa
Принадлежит: HITACHI AUTOMOTIVE SYSTEMS LTD

An object of the present invention is to provide a brake apparatus capable of acquiring a stable brake performance. A brake apparatus includes a master cylinder configured to be activated according to a brake operation performed by a driver, a reservoir tank divided into at least a first chamber connected to a wheel cylinder via the master cylinder and a second chamber connected to a hydraulic source configured to increase a pressure of brake fluid and transmit the brake fluid to the wheel cylinder, a brake control unit configured to perform brake control of transmitting the brake fluid to the wheel cylinder, and a fluid level detection unit configured to detect a fluid level of the brake fluid in the reservoir tank. The brake control unit is provided so as to be able to perform first brake control of transmitting the brake fluid from the first chamber to the wheel cylinder with use of the master cylinder, thereby increasing a pressure in this wheel cylinder, and second brake control of transmitting the brake fluid in the second chamber to the wheel cylinder with use of the hydraulic source, thereby increasing a pressure in this wheel cylinder. The brake control unit switches brake control between the first brake control and the second brake control according to the fluid level detected by the fluid level detection unit.

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Номер записи: 20
19-01-2017 дата публикации

Brake Control System, Brake System, and Brake Hydraulic Pressure Generating Method

Номер: US20170015293A1
Автор: Oosawa Toshiya, Sonoda Hiroki, WATANABE Asahi, YAGASHIRA Hideaki
Принадлежит:

A system comprises: pump (hydraulic pressure source) that uses brake fluid supplied from reservoir tank (reservoir) to generate hydraulic pressure in first hydraulic line, thereby generating hydraulic pressure in wheel cylinder; piston configured to move axially in cylinder under the action of hydraulic fluid supplied from master cylinder, piston dividing cylinder into at least two chambers (positive pressure chamber and backpressure chamber); stroke simulator for generating reaction force to a driver's brake operation by moving piston; second hydraulic line provided between positive pressure chamber in stroke simulator and master cylinder; and third hydraulic chamber provided between backpressure chamber and first hydraulic chamber to transmit brake fluid from backpressure chamber to first hydraulic chamber. 1. A brake control system comprising:a hydraulic pressure source configured to use brake fluid supplied from a reservoir to generate hydraulic pressure in a first hydraulic line and apply it to a wheel cylinder;a stroke simulator comprising a piston that divides a cylinder into at least two chambers, the piston being configured to move axially in the cylinder under the action of brake fluid supplied from a master cylinder, thereby producing reaction force to a driver's brake operation;a second hydraulic line provided between one of the two chambers of the stroke simulator and the master cylinder; anda third hydraulic line provided between the other chamber of the stroke simulator and the first hydraulic line to transmit brake fluid from the other chamber into the first hydraulic line.2. A brake control system according to claim 1 , wherein the hydraulic pressure source is a pump.3. A brake control system according to claim 2 , further comprising a fourth hydraulic line branching off from the third hydraulic line and located between the other chamber of the stroke simulator and the reservoir.4. A brake control system according to claim 3 , further comprising a ...

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Номер записи: 21
03-02-2022 дата публикации

WEAR VOLUME ESTIMATION DEVICE, WEAR VOLUME ESTIMATION METHOD, AND WEAR VOLUME ESTIMATION PROGRAM

Номер: US20220034379A1
Автор: Matsui Noriyoshi
Принадлежит:

A wear volume estimation device estimates a wear volume of a brake pad of a vehicle. A wear volume function expresses the wear volume as a function of a vehicle speed, a brake pressure, and a brake duration. The wear volume estimation device calculates the wear volume by using the wear volume function. Moreover, the wear volume estimation device estimates a temperature of a contact surface of the brake pad that comes in contact with a brake rotor, and updates temperature history information indicating at least a temperature history of the contact surface based on the temperature of the contact surface. The wear volume estimation device variably sets the wear volume function according to the temperature history of the contact surface indicated by the temperature history information acquired at a time of previous braking. 1. A wear volume estimation device that estimates a wear volume of a brake pad of a vehicle ,the wear volume estimation device comprising:a processor; anda storage configured to store information on a wear volume function that expresses the wear volume as a function of a vehicle speed, a brake pressure, and a brake duration, wherein an information acquisition process acquiring information on the vehicle speed, the brake pressure, and the brake duration, during braking of the vehicle;', 'a wear volume calculation process calculating the wear volume according to the vehicle speed, the brake pressure, and the brake duration by using the wear volume function;', 'a temperature estimation process estimating a temperature of a contact surface of the brake pad that comes in contact with a brake rotor, based on the vehicle speed, the brake pressure, and the brake duration; and', 'a temperature history management process updating temperature history information indicating at least a temperature history of the contact surface, based on the temperature of the contact surface, and, 'the processor is programmed to executein the wear volume calculation process, the ...

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Номер записи: 22
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: 23
21-01-2021 дата публикации

BRAKING CONTROL DEVICE

Номер: US20210016755A1
Автор: Ishida Yasuhito, Kobayashi Tatsushi, Nishiwaki Kunihiro, NOMURA Jun
Принадлежит: ADVICS CO., LTD.

The present disclosure comprises a reservoir cutoff valve provided on a pipe and configured to be opened in a non-energization state; a simulator cutoff valve provided on a pipe and configured to be closed in a non-energization state; an operation determination circuit configured to determine whether the brake operation member is in an operation execution state in which the brake operation member is being operated is; and a current control circuit that, when the operation determination circuit determines that the brake operation member is not in an operation execution state, supplies a first current to the reservoir cutoff valve, and when the operation determination circuit determines that the brake operation member is in an operation execution state, supplies a second current greater than the first current to the reservoir cutoff valve. 1. A braking control device comprising:a reservoir connected to a fluid pressure chamber configured to supply a brake fluid in response to an operation of a brake operation member;a first flow path between the reservoir and the fluid pressure chamber;a second flow path connected to the first flow path at a connection part;a stroke simulator configured to apply a reactive force pressure to the brake operation member as a brake fluid is supplied thereto from the fluid pressure chamber via the first flow path and the second flow path;a reservoir cutoff valve provided in the first flow path between the reservoir and the connection part, the reservoir cutoff valve configured to be opened in a non-energization state;an operation determination circuit configured to determine whether the brake operation member is in an operation execution state in which the brake operation member being operated is; anda current control circuit configured to supply a first current to the reservoir cutoff valve when the operation determination circuit determines the brake operation member is in the operation execution state, and the current control circuit ...

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Номер записи: 24
25-01-2018 дата публикации

Brake Apparatus

Номер: US20180022332A1
Автор: Oosawa Toshiya, Sonoda Hiroki, WATANABE Asahi
Принадлежит:

An object of the present invention is to provide a brake apparatus capable of acquiring a sufficient braking force when an abnormality has occurred. The brake apparatus includes a stroke simulator. The stroke simulator is connected to a portion of an oil passage between a master cylinder and a valve. The oil passage connects the master cylinder and a wheel cylinder therebetween. The stroke simulator is configured to generate a brake operation reaction force due to an increase and a reduction in a volume of a positive pressure chamber formed inside the stroke simulator. Brake fluid contained in a first chamber of the master cylinder flows into the positive pressure chamber at the time of control by a by-wire control unit. A fluid amount that can be supplied from the first chamber is larger than a fluid amount that the positive pressure can absorb therein. 117.-. (canceled)18. A brake apparatus comprising:an oil passage connecting a master cylinder and a wheel cylinder therebetween;a valve configured to switch a communication state of the oil passage;a by-wire control unit configured to close the valve to increase a pressure in the wheel cylinder by a hydraulic source provided separately from the master cylinder, according to a state of a brake operation performed by a driver;a pressing force brake unit configured to open the valve to increase the pressure in the wheel cylinder by the master cylinder; anda stroke simulator connected to a portion of the oil passage between the master cylinder and the valve, and configured to generate a brake operation reaction force due to an increase and a reduction in a volume of a positive pressure chamber formed inside the stroke simulator,wherein brake fluid contained in a first chamber of the master cylinder flows into the positive pressure chamber at the time of control by the by-wire control unit, andwherein a fluid amount that can be supplied from the first chamber is larger than a fluid amount that a positive pressure chamber ...

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Номер записи: 25
10-02-2022 дата публикации

ELECTROMECHANICAL BRAKE SYSTEM

Номер: US20220041143A1
Автор: PUTZ Michael
Принадлежит: GREENBRAKES GMBH

A brake system includes an electromechanical brake having a friction surface, a lining support having a brake lining, an electric motor for moving the lining support, and a control and monitoring unit. The control and monitoring unit ascertains, from a first value ascertained during a first movement of the lining support by the electric motor, an operating parameter of at least one part of the brake, and a second value ascertained during a second movement opposite to the first movement of the lining support, by the electric motor, an operating behavior value for a real operating behavior of the relevant brake, and ascertains, by comparing the at least one real operating behavior value to at least one stored operating behavior expectation, a correction factor. The brake control system is corrected by the one correction factor and a regulator of the electric motor is activated using the corrected brake control signal. 123-. (canceled)24. An electromechanical brake system comprising at least one electromechanical brake , wherein the electromechanical brake comprises:at least one friction surface;at least one lining support having at least one brake lining;at least one electric motor for the predefinable movement of the lining support; andan actuating mechanism, on which the lining support is mounted, and which is connected to the electric motor;wherein the brake system has a control and monitoring unit adapted to receive a braking action request on the input side and to generate a brake control signal on a basis of the braking action request and output it to a regulator of the electric motor, 'to ascertain, from at least one first value, which is ascertained during a first movement of the lining support by means of the electric motor, of at least one first operating parameter of at least one part of the brake, and at least one second value, which is ascertained during a second movement, opposite to the first movement, of the lining support by means of the electric ...

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Номер записи: 26
10-02-2022 дата публикации

BRAKE CONTROL VALVE ARRANGEMENT

Номер: US20220041147A1
Автор: ANSTEY Nigel, DRUETT Ben, HEMMINGS Mark, PEARE Justin
Принадлежит:

An electropneumatic rail brake system configured to provide emergency braking including an emergency magnet valve which controls air flow into an emergency regulator valve, which valve has an emergency back-up chamber. The emergency regulator provides an output pressure nominally equal to the variable load pressure and no lower than the tare back-up. The magnet valve is closed when energized and when de-energized, pressure is allowed into the emergency back-up chamber, Regulation of the brake cylinder pressure continues during an emergency application such that the brake cylinder pressure applied during an emergency stop does not drop below a predetermined level. In the event of power-loss during an emergency brake stop, the nominal emergency brake pressure is applied to the brake cylinders. 1. An electropneumatic brake system for a rail vehicle configured to provide emergency braking , the electropneumatic brake system comprising:brake cylinders for applying a brake force;emergency regulator valve that has an emergency back-up chamber; andan emergency magnet valve which controls air flow into the emergency regulator valve,wherein the emergency regulator valve being is adapted to provide an output pressure nominally equal to a variable load pressure and no lower than a tare back-up setting,wherein the emergency magnet valve is controlled by a first electronic control unit that regulates brake cylinder pressure,wherein the emergency magnet valve is closed when energised,wherein, when the emergency magnet valve is de-energised, pressure is allowed into the emergency back-up chamber,wherein regulation of a brake cylinder pressure by the first electronic control unit continues during an emergency application such that the brake cylinder pressure applied during an emergency stop does not drop below a predetermined level, andwherein, in the event of power-loss during an emergency brake stop, a nominal emergency brake pressure is applied to the brake cylinders.2. The ...

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Номер записи: 27
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: 28
01-02-2018 дата публикации

VEHICLE BRAKE DEVICE

Номер: US20180029576A1
Автор: KAMIYA Yusuke, Kobayashi Tatsushi, Komazawa Masaaki
Принадлежит:

Provided is a brake device capable of detecting abnormality condition of a subject valve without using a wheel pressure sensor and the vehicle brake device includes a valve which is configured to open and close a fluid passage connected to the master chamber and at the same time which is a subject valve for a subject of failure judgement and an abnormality judging portion which is configured to judge whether or not the subject valve is in an abnormal state based on an advancement amount of the master piston accompanying an opening of the subject valve. 1. A vehicle brake device which generates a braking force at a wheel of a vehicle based on a hydraulic pressure generated in a master chamber by a movement of a master piston , comprising:a valve which is configured to open and close a fluid passage connected to the master chamber and at the same time which is a subject valve for a subject of failure judgement; andan abnormality judging portion which is configured to judge whether or not the subject valve is in an abnormal state based on an advancement amount of the master piston accompanying an opening of the subject valve.2. The vehicle brake device according to claim 1 , wherein the vehicle brake device includes an anti-lock brake system having a reservoir claim 1 , into which a brake fluid in a first wheel cylinder of a first wheel of the vehicle and the brake fluid in a second wheel cylinder of a second wheel of the vehicle are discharged;a first inlet valve disposed between the master chamber and the first wheel cylinder;a first outlet valve disposed between the first wheel cylinder and the reservoir;a second inlet valve disposed between the master chamber and the second wheel cylinder; anda second outlet valve disposed between the second wheel cylinder and the reservoir, wherein the vehicle brake device further comprises:a driving portion which is configured to drive the master piston, wherein the abnormality judging portion executes a first control that ...

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Номер записи: 29
17-02-2022 дата публикации

BRAKE ACTUATING UNIT FOR A BRAKE-BY-WIRE MOTOR VEHICLE BRAKE SYSTEM AND MOTOR VEHICLE BRAKE SYSTEM

Номер: US20220048484A1
Автор: FEIGEL Hans-Jöng, LEE Youn Song, TARANDEK Kristijan
Принадлежит:

The present application relates to a brake actuating unit for a brake-by-wire motor vehicle brake system. The brake actuating unit comprises a housing, a first electrically controllable pressure supplying device, and a second electrically controllable pressure supplying device. The brake actuating unit further comprises a first connector for electrically connecting the brake actuating unit with a vehicle control unit and with a power network. The first connector is electrically connected with the first electrically controllable pressure supplying device. The brake actuating unit comprises a second connector for electrically connecting the brake actuating unit with the vehicle control unit and with the power network. The second connector is electrically connected with the second electrically controllable pressure supplying device. The brake actuating unit comprises a first cylinder and piston arrangement disposed within the housing and a piston rod for transmitting a displacement of a brake pedal to a piston. 1. A brake actuating unit for a brake-by-wire motor vehicle brake system , comprising:a housing,a first electrically controllable pressure supplying device,a second electrically controllable pressure supplying device,a brake pedal actuation sensing device electrically connected with at least one of the first electrically controllable pressure supplying device and the second electrically controllable pressure supplying device,hydraulic connections to hydraulically connect wheel brakes of the brake system with the first pressure supplying device and the second pressure supplying device of the brake actuating unit,a first connector to electrically connect the brake actuating unit with a vehicle control unit and with a power network of the vehicle, wherein the first connector is electrically connected with the first electrically controllable pressure supplying device, anda second connector to electrically connect the brake actuating unit with the vehicle control ...

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Номер записи: 30
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: 31
30-01-2020 дата публикации

BRAKING SYSTEM

Номер: US20200031326A1
Автор: HENRIKSSON Tuomas
Принадлежит:

A system for braking a trailer towed by a tow vehicle. The system includes a signalling means for generating an electrical signal based on an action applied by a driver to a brake operating unit. Further, the system includes means for determining weight of the trailer and a brake control unit. Yet further, the system includes a communication means for providing the electrical signal from the signalling means to the brake control unit. The brake control unit being configured to use the determined weight of the trailer to obtain a gain value, calculate a braking power signal value using the electrical signal and the gain value and provide a braking power control signal to an electric braking unit of a wheel of the trailer, based on the braking power signal value. 2. A system according to claim 1 , where in the gain value is obtained using a predetermined function or a look-up table stored in a memory of the brake control unit.3. A system according to claim 2 , wherein the predetermined function for obtaining the gain value is dividing the determined weight by a reference value.4. A system according to claim 3 , wherein the reference value is pre-set in the brake control unit and is equal to sum of the weight of an empty trailer and a weight of a maximum allowed load.5. A system according to claim 1 , wherein the signalling means for generating the electrical signal is a sensor attachable to the brake operating unit of the tow vehicle claim 1 , and generation of the electrical signal is based oninformation from an antilock-braking system of the tow vehicle, ora pressure reading from a brake system of the tow vehicle.6. A system according to claim 1 , wherein the brake control unit is arrangeable in the trailer.7. A system according to claim 1 , wherein the means for determining weight of the trailer is selected from a load sensor attachable to a suspension system of the trailer claim 1 , a force sensor attachable to a suspension system of the trailer claim 1 , an air ...

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Номер записи: 32
04-02-2021 дата публикации

HYDRAULIC MOTOR VEHICLE BRAKING SYSTEM AND METHOD FOR OPERATING SAME

Номер: US20210031741A1
Автор: Alford Nicholas, Marx Andreas
Принадлежит: ZF Active Safety GmbH

A hydraulic motor vehicle braking system includes a first sensor device, a first functional unit, a second functional unit and a switching device. The first functional unit comprises at least one first electrical brake pressure generator, by means of which a brake pressure can be generated on respective wheel brakes, and a first control system which is designed to control the at least one first electrical brake pressure generator on the basis of a sensor signal of the sensor device. The second functional unit comprises at least one second electrical brake pressure generator, by means of which a brake pressure can be respectively generated on a subset of the wheel brakes, and a second control system which is designed to control the at least one second electrical brake pressure generator on the basis of the sensor signal in the event of a failure of the first functional unit. 1. A hydraulic motor vehicle brake system comprising:a first sensor device which is designed to generate a sensor signal;a first functional unit withat least one first electrical brake pressure generator by means of which a brake pressure can be generated in each case at wheel brakes; anda first control system which is designed to actuate the at least one first electrical brake pressure generator based on the sensor signal;a second functional unit withat least one second electrical brake pressure generator by means of which in each case a brake pressure can be generated at a subset of the wheel brakes; anda second control system which is designed to actuate the at least one second electrical brake pressure generator based on the sensor signal in the event of a malfunction of the first functional unit; anda first switching device which is designed to selectively couple the first sensor device to the first control system or the second control system depending on a functionality of the first functional unit.2. The brake system as claimed in claim 1 , wherein the switching device is designed to ...

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Номер записи: 33
04-02-2021 дата публикации

HYDRAULIC BRAKING SYSTEM FOR A VEHICLE, METHOD FOR OPERATING

Номер: US20210031742A1
Автор: DROTLEFF Dirk, YAO Xun
Принадлежит:

A hydraulic braking system for a motor vehicle, including at least two brake circuits which each include at least one hydraulically actuatable wheel brake and at least one electrically operable pressure generator, the pressure generators being activatable as a function of a brake request of the motor vehicle or a driver of the motor vehicle. A respective electric actuator is assigned to each pressure generator for its operation, and at least one activatable emergency operation valve is interconnected between the brake circuits, which in a first switching position disconnects the brake circuits from one another and in a second switching position connects them to one another. 1. A hydraulic braking system for a motor vehicle , comprising:at least two brake circuits, each of the brake circuits including at least one hydraulically actuatable wheel brake and at least one electrically operable pressure generator, the pressure generators being activatable as a function of a brake request of the motor vehicle or a driver of the motor vehicle;wherein a respective electric actuator is assigned to each of the pressure generator for operation of the respective pressure generator, and at least one activatable emergency operation valve is interconnected between the brake circuits, the emergency operation valve, in a first switching position, disconnects the brake circuits from one another, and in a second switching position, connects the brake circuits to one another.2. The braking system as recited in claim 1 , wherein the emergency operation valve is configured as a closed emergency operation valve when de-energized claim 1 , which is in the de-energized state in the first switching position.3. The braking system as recited in claim 1 , wherein the electric actuators are connected to electrical system parts of an electrical system of the motor vehicle which are disconnected or disconnectable from one another.4. The braking system as recited in claim 1 , wherein each electric ...

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Номер записи: 34
04-02-2021 дата публикации

Braking force control device

Номер: US20210031771A1
Автор: Kazuki Miyake
Принадлежит: Toyota Motor Corp

A braking force control device includes a target acceleration calculation unit that calculates a first target acceleration based on an acquired operation amount of an accelerator pedal, a powertrain capability acquisition unit that acquires a braking force that is generable by a powertrain, and an instruction unit that instructs generation of braking forces in the powertrain and a brake. The instruction unit is configured to, when a first braking force for achieving the first target acceleration is equal to or less than the braking force that is generable by the powertrain, instruct a controller of the powertrain to generate the first braking force, and when the first braking force is larger than the braking force that is generable by the powertrain, instruct the controller of the powertrain to generate the braking force that is generable by the powertrain.

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Номер записи: 35
09-02-2017 дата публикации

METHOD FOR THE TEMPERATURE-DEPENDENT CONTROL OF A PRESSURE CONTROL VALVE AND A CONTROL DEVICE THEREFORE

Номер: US20170036655A1
Автор: Eckert Horst, Schwagmeyer Florian
Принадлежит:

A method for the temperature-dependent control of a pressure control valve of a vehicle comprising an inlet valve and an outlet valve includes detecting a predefined pressure difference to be controlled by the pressure control valve, determining a present valve body temperature, wherein, for this purpose, a temperature change proceeding from a starting temperature is considered depending on at least one detected valve body influencing variable, determining, depending on the pressure difference to be controlled and on the determined present valve body temperature, at least one of a temperature-adjusted pulse duration for the inlet valve and a temperature-adjusted pulse duration for the outlet valve, and controlling at least one of the inlet valve and the outlet valve of the pressure control valve via the particular temperature-adjusted pulse duration in order to effectuate the detected pressure difference at the determined valve body temperature. 1. A method for the temperature-dependent control of a pressure control valve of a vehicle comprising an inlet valve and an outlet valve , the method comprising:detecting a pressure difference to be controlled by the pressure control valve;determining a present valve body temperature, wherein, for this purpose, a temperature change proceeding from a starting temperature is considered depending on at least one detected valve body influencing variable;determining, depending on the pressure difference to be controlled and on the determined present valve body temperature, at least one of a temperature-adjusted pulse duration for the inlet valve and a temperature-adjusted pulse duration for the outlet valve; andcontrolling at least one of the inlet valve and the outlet valve of the pressure control valve via the particular temperature-adjusted pulse duration in order to effectuate the detected pressure difference at the determined valve body temperature.2. The method as claimed in claim 1 , wherein in order to determine at least ...

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Номер записи: 36
08-02-2018 дата публикации

BRAKE PEDAL EMULATOR OF A BRAKE-BY-WIRE SYSTEM AND METHOD OF OPERATION

Номер: US20180037202A1
Автор: Mrdeza Scott C., Pennala Brandon C., Roberts Michael C.
Принадлежит:

A brake pedal emulator for a brake-by-wire system of a vehicle extends and connects between a support structure and a brake pedal operatively engaged to the support structure. The brake pedal emulator includes a hydraulic cylinder having a magneto-rheological hydraulic fluid and an electrical element configured to carry an electrical current for controlling a viscosity of the magneto-rheological hydraulic fluid and thereby controlling a first force exerted by the hydraulic cylinder when actuated by the brake pedal. 1. A brake pedal emulator extending and connected between a support structure and a brake pedal operatively engaged to the support structure , the brake pedal emulator comprising:a hydraulic cylinder including a magneto-rheological hydraulic fluid and an electrical element configured to carry an electrical current for controlling a viscosity of the electro/magneto rheological hydraulic fluid and thereby control a first force exerted by the hydraulic cylinder when actuated.2. The brake pedal emulator set forth in further comprising:a force induction device engaged between the support structure and the brake pedal, and constructed and arranged to exert a second force upon the brake pedal that varies as a function of brake pedal travel.3. The brake pedal emulator set forth in claim 2 , wherein the first force is a damping force that varies as a function of at least brake pedal speed.4. The brake pedal emulator set forth in claim 2 , wherein the force induction device is a coiled spring.5. The brake pedal emulator set forth in claim 4 , wherein the coiled spring is concentrically disposed about the hydraulic cylinder.6. The brake pedal emulator set forth in claim 5 , wherein the coiled spring and the hydraulic cylinder are compressible along a common centerline.7. The brake pedal emulator set forth in further comprising:a base member directly engaged pivotally to the support structure at a first pivot axis and rigidly engaged to the hydraulic cylinder; anda ...

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Номер записи: 37
08-02-2018 дата публикации

VEHICLE BRAKE-BY-WIRE SYSTEM WITH A BRAKE PEDAL EMULATOR OVERRIDE DEVICE

Номер: US20180037207A1
Автор: Chappell Christopher C., Pennala Brandon C., Roberts Michael C.
Принадлежит:

A brake pedal apparatus for actuating a vehicle brake assembly includes a stationary structure, a brake pedal emulator assembly, and an emulator override device. The brake pedal emulator assembly includes a brake pedal operatively engaged to the stationary structure, and a brake pedal emulator operatively engaged between the stationary structure and the brake pedal along a centerline. The brake pedal emulator is configured to electrically operate the brake assembly. The emulator override device includes a mechanical linkage operatively engaged to the brake assembly, and a latch configured to selectively connect and disconnect the mechanical linkage from the brake pedal emulator assembly. The mechanical linkage is configured to mechanically operate the brake assembly via at least in-part movement of the brake pedal along the centerline. 1. A brake pedal apparatus for actuating a vehicle brake assembly , the brake pedal apparatus comprising:a stationary structure;a brake pedal emulator assembly including a brake pedal operatively engaged to the stationary structure and a brake pedal emulator operatively engaged between the stationary structure and the brake pedal along a centerline, and wherein the brake pedal emulator is configured to electrically operate the brake assembly; andan emulator override device including a mechanical linkage operatively engaged to the brake assembly and a latch configured to selectively connect and disconnect the mechanical linkage from the brake pedal emulator assembly, and wherein the mechanical linkage is configured to mechanically operate the brake assembly via at least in-part movement of the brake pedal along the centerline.2. The brake pedal apparatus set forth in claim 1 , wherein the latch includes an electric solenoid and a bolt actuated by the electric solenoid to engage and disengage the mechanical linkage.3. The brake pedal apparatus set forth in claim 2 , wherein the bolt is disengaged when the electric solenoid is energized. ...

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Номер записи: 38
24-02-2022 дата публикации

ELECTRONICALLY CONTROLLED PNEUMATIC BRAKE SYSTEM WITH TWO SINGLE-CHANNEL AXLE MODULATORS AND ABS VALVES, AND VEHICLE HAVING A BRAKE SYSTEM OF THIS TYPE

Номер: US20220055583A1
Автор: Michaelsen Arne
Принадлежит:

The disclosure relates to an electronically controlled pneumatic brake system for a utility vehicle, including a front-axle brake circuit with a single-channel front-axle modulator for the control of first and second front-axle service brake actuators, wherein first and second front-axle ABS valves are provided; a rear-axle brake circuit with a single-channel rear-axle modulator for the control of first and second rear-axle service brake actuators, wherein first and second rear-axle ABS valves are provided; a braking-value sensor which has an electrical terminal for the provision of an electronic brake demand signal; and a central electronic control unit which receives the electronic brake demand signal and controls the front-axle and rear-axle modulators. Here, it is provided that the central electronic control unit is formed as a structural unit with the rear-axle modulator and/or the front-axle modulator. 1. An electronically controlled pneumatic brake system for a vehicle , the system comprising:a front-axle brake circuit with a single-channel front-axle modulator configured to activate a first front-axle service-brake actuator and a second front-axle service-brake actuator;a first front-axle ABS valve interposed between the single-channel front-axle modulator and the first front-axle service-brake actuator;a second front-axle ABS valve interposed between the front-axle modulator and the second front-axle service-brake actuator;a rear-axle brake circuit with at least one single-channel rear-axle modulator configured to activate the first rear-axle service-brake actuator and the second rear-axle service-brake actuator;a first rear-axle ABS valve interposed between the at least one rear-axle modulator and the first rear-axle service-brake actuator;a second rear-axle ABS valve interposed between the at least one rear-axle modulator and the second rear-axle service-brake actuator;a braking-value transducer having at least one electrical terminal for providing an ...

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Номер записи: 39
24-02-2022 дата публикации

VEHICLE BRAKING SYSTEM AND METHOD OF OPERATING THE SAME

Номер: US20220055591A1
Автор: Albert Timothy J., Kuhlman Ryan A., Raumer Robin, Timpa James
Принадлежит:

A vehicle braking system includes a first wheel cylinder, a second wheel cylinder, a master cylinder including a first master cylinder chamber in fluid communication with the first wheel cylinder via a first circuit and a second master cylinder chamber in fluid communication with the second wheel cylinder via a second circuit, and an electronically controlled pressure generating unit separate from the master cylinder. The vehicle braking system is operable to provide braking in a first configuration in which the electronically controlled pressure generating unit pressurizes fluid, through the master cylinder, in the first circuit, to the first wheel cylinder. In the first configuration, the electronically controlled pressure generating unit pressurizes fluid in the second circuit to the second wheel cylinder, bypassing the master cylinder. 1. A vehicle braking system comprising:a first wheel cylinder;a second wheel cylinder;a master cylinder including a first master cylinder chamber in fluid communication with the first wheel cylinder via a first circuit and a second master cylinder chamber in fluid communication with the second wheel cylinder via a second circuit; andan electronically controlled pressure generating unit separate from the master cylinder;wherein the vehicle braking system is operable to provide braking in a first configuration in which the electronically controlled pressure generating unit pressurizes fluid, through the master cylinder, in the first circuit, to the first wheel cylinder; andwherein, in the first configuration, the electronically controlled pressure generating unit pressurizes fluid in the second circuit to the second wheel cylinder, bypassing the master cylinder.2. The vehicle braking system of claim 1 , wherein the master cylinder further comprises a third master cylinder chamber located between a braking input device and the first master cylinder chamber claim 1 , the vehicle braking system further comprising a first valve located ...

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Номер записи: 40
06-02-2020 дата публикации

ABS Retarder Disable for 6X2 vehicles

Номер: US20200039486A1
Автор: Fay Edward A., JR. Thomas S., MILLER
Принадлежит:

An apparatus is provided for a vehicle having a driven rear axle and an undriven rear axle. The apparatus comprises a data storage device arranged to store a slip threshold at which a powertrain braking function is disabled, a first sensor for detecting speed of a wheel on the driven rear axle and providing a first signal indicative thereof, a second sensor for detecting speed of a wheel on the undriven rear axle and providing a second signal indicative thereof, a third sensor for detecting a condition of the vehicle and providing a third signal indicative thereof, and an electronic controller arranged to (i) process at least the first and second signals to provide a fourth signal indicative of an amount of slip, and (ii) modify the stored slip threshold value based on a combination of the third and fourth signals. 1. An apparatus for a vehicle having at least one driven rear axle and at least one undriven rear axle , the apparatus comprising:a data storage device arranged to store a slip threshold value at which a powertrain braking function of the vehicle is disabled;a first sensor for detecting wheel speed of a wheel on the driven rear axle of the vehicle and providing a first signal indicative thereof;a second sensor for detecting wheel speed of a wheel on the undriven rear axle of the vehicle and providing a second signal indicative thereof;a third sensor for detecting a condition of the vehicle and providing a third signal indicative thereof; andan electronic controller arranged to (i) process at least the first and second signals to provide a fourth signal indicative of an amount of longitudinal wheel slip between the driven rear axle and the undriven rear axle, and (ii) modify the stored slip threshold value based on a combination of the third and fourth signals.2. An apparatus according to claim 1 , wherein the third sensor comprises a sensor for detecting intent of a vehicle driver applying brakes of the vehicle.3. An apparatus according to claim 2 , ...

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Номер записи: 41
06-02-2020 дата публикации

BRAKING DEVICE FOR VEHICLE

Номер: US20200039494A1
Автор: Ishida Yasuhito, Kobayashi Tatsushi, Nishiwaki Kunihiro, Yamamoto Takayuki
Принадлежит: ADVICS CO., LTD.

A braking device includes a stroke simulator, a hydraulic pressure generation unit, a reaction hydraulic pressure detection unit, a master hydraulic pressure detection unit, and a bottoming determination unit. The stroke simulator includes a cylinder and a piston slidably movable inside the cylinder in conjunction with an operation of a brake operation member. The stroke simulator causes a reaction force chamber to generate a reaction hydraulic pressure and applies a reaction force. The hydraulic pressure generation unit generates a master hydraulic pressure by driving a master piston and supplies a hydraulic pressure to a wheel cylinder. The reaction hydraulic pressure detection unit detects the reaction hydraulic pressure. The master hydraulic pressure detection unit detects the master hydraulic pressure. The bottoming determination unit determines whether the master piston is in a bottoming state based on the reaction hydraulic pressure and the master hydraulic pressure. 1. A braking device for a vehicle , the braking device comprising:a stroke simulator which has a cylinder, a piston that slidably moves inside the cylinder in conjunction with an operation of a brake operation member, and which causes a reaction force chamber to generate a reaction hydraulic pressure and applies a reaction force corresponding to the reaction hydraulic pressure to the brake operation member;a hydraulic pressure generation unit which generates a master hydraulic pressure by driving a master piston in a master cylinder in accordance with an operation of the brake operation member and supplies a hydraulic pressure based on the master hydraulic pressure to a wheel cylinder;a reaction hydraulic pressure detection unit that detects the reaction hydraulic pressure;a master hydraulic pressure detection unit that detects the master hydraulic pressure; anda bottoming determination unit that determines whether or not the master piston is in a bottoming state based on the reaction hydraulic ...

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Номер записи: 42
06-02-2020 дата публикации

METHOD AND CONTROL UNIT FOR OPERATING A BRAKING SYSTEM AND BRAKING SYSTEM

Номер: US20200039495A1
Автор: Henning Wadim
Принадлежит:

A method for ascertaining a leakage in a hydraulic braking system of a motor vehicle, the braking system including at least one hydraulically actuatable wheel brake, at least one pressure generator and at least one discharge valve which is assigned to the wheel brake and actuated as a function of a driving situation of the motor vehicle to maintain driving stability, and a hydraulic volume of the braking system being monitored. It is provided that the leakage is ascertained as a function of the ascertained hydraulic volume and as a function of an actuation of the discharge valve. 11. A method for ascertaining a leakage in a hydraulic braking system of a motor vehicle , the braking system () including at least one hydraulically actuatable wheel brake , at least one pressure generator and at least one discharge valve which is assigned to the wheel brake and actuated as a function of a driving situation of the motor vehicle to maintain a driving stability , and a hydraulic volume of the braking system , the method comprising:ascertaining the hydraulic volume; andascertaining the leakage as a function of the ascertained hydraulic volume and as a function of an actuation of the discharge valve.2. The method as recited in claim 1 , further comprising:ascertaining a difference between an actual volume of a brake fluid of the braking system which is effective in the braking system and a setpoint volume predefined in the braking system as the hydraulic volume for generating a requested braking force.3. The method as recited in claim 1 , further comprising:determining an effective actual volume as a function of a hydraulic pressure of the brake fluid in the braking system.4. The method as recited in claim 2 , wherein the setpoint volume is ascertained as a function of a displacement of a hydraulic piston of the pressure generator.5. The method as recited in claim 1 , further comprising:ascertaining a volume loss in the braking system as a function of the actuation of the at ...

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Номер записи: 43
18-02-2021 дата публикации

ELECTRIC BRAKE SYSTEM, HYDRAULIC PRESSURE CONTROL CIRCUIT, AND FLUID AMOUNT CONTROL CIRCUIT

Номер: US20210046909A1
Автор: KIKAWA Masayuki, Matsuzaki Norikazu, SAOTOME Suguru, TAKAHASHI Naoki
Принадлежит:

An electric brake system includes a hydraulic pressure control circuit configured to acquire a detected value from a hydraulic pressure detection portion configured to detect a hydraulic pressure in a master cylinder and control driving of an electric actuator in such a manner that a target hydraulic pressure corresponding to a braking instruction is generated in the master cylinder, a fluid amount control circuit configured to drive a fluid amount supply device disposed between the master cylinder and a wheel cylinder to control a fluid amount to supply to the wheel cylinder, and a storage circuit configured to store a fluid amount characteristic, which is a characteristic of the fluid amount with respect to the detected value. The fluid amount control circuit controls the fluid amount supply device based on the fluid amount characteristic stored in the storage circuit. 1. An electric brake system comprising:a hydraulic pressure control circuit configured to acquire a detected value from a hydraulic pressure detection portion configured to detect a hydraulic pressure in a master cylinder, and control driving of an electric actuator in such a manner that a target hydraulic pressure corresponding to a braking instruction is generated in the master cylinder;a fluid amount control circuit configured to drive a fluid amount supply device disposed between the master cylinder and a wheel cylinder to control a fluid amount to supply to the wheel cylinder; anda storage circuit configured to store a fluid amount characteristic, which is a characteristic of the fluid amount with respect to the detected value,wherein the fluid amount control circuit controls the fluid amount supply device based on the fluid amount characteristic stored in the storage circuit.2. The electric brake system according to claim 1 , wherein the fluid amount control circuit controls the fluid amount supply device based on the fluid amount characteristic when the target hydraulic pressure corresponding ...

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Номер записи: 44
15-02-2018 дата публикации

BRAKE EMULATOR OF A BRAKE-BY-WIRE SYSTEM

Номер: US20180043866A1
Автор: Chappell Christopher C., Kilmurray Paul A., MONSERE PATRICK J., Pennala Brandon C.
Принадлежит:

A brake pedal assembly of a brake emulator includes a resiliently flexible arm constructed and arranged to include a flexibility that mimics, at least in-part, a pre-determined braking force profile. The flexible arm includes opposite first and second end portions and a pivot point disposed there-between. 1. A brake pedal assembly comprising:a first resiliently flexible arm including a back side, a front side, a first end portion, an opposite second end portion, and a first pivot point disposed between the first and second end portion, and wherein the flexibility of the resiliently flexible arm at least in-part mimics a pre-determined braking force profile.2. The brake pedal assembly set forth in further comprising:a second resiliently flexible arm arranged side-by-side to the first resiliently flexible arm, the second resiliently flexible arm including a front side, a first end portion, an opposite second end portion, and a second pivot point aligned to the first pivot point; anda brake pad engaged to the first end portions.3. The brake pedal assembly set forth in claim 1 , wherein the first resiliently flexible arm includes a first contact carried by the front side and proximate to the second end portion claim 1 , and a second contact carried by the back side and disposed between the first pivot point and the first end portion.4. The brake pedal assembly set forth in further comprising:a strain-based sensor integrated into the first resiliently flexible arm.5. The brake pedal assembly set forth in claim 4 , wherein the strain-based sensor is disposed between the first pivot point and the first end portion.6. The brake pedal assembly set forth in claim 5 , wherein the strain-based sensor is proximate to the front side.7. A vehicle brake emulator actuated by a driver claim 5 , the vehicle brake emulator comprising:a fixed structure; anda first resiliently flexible arm connected to the fixed structure at a pivot axis, the first resiliently flexible arm including a ...

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Номер записи: 45
15-02-2018 дата публикации

BRAKE-BY-WIRE SYSTEM

Номер: US20180043876A1
Автор: Chappell Christopher C., Houtman Alan J., Kilmurray Paul A., Pennala Brandon C.
Принадлежит:

A vehicle is provided. The vehicle includes a brake-by-wire sub-system, which includes a controller. The controller receives a request to enter a service mode. In response to the request to enter the service mode, the controller determines whether a vehicle is in a stable state based on comparing at least one system condition against at least one threshold. When the vehicle is in the stable state, the controller causes the brake-by-wire sub-system to enter into the service mode. Further, the controller monitors the at least one system condition against predefined parameters to determine that the vehicle is maintaining the stable state while in the service mode. 1. A vehicle system of a vehicle , the vehicle system comprising:a brake-by-wire sub-system comprising a controller configured to:receive a request to enter a service mode;in response to the request to enter the service mode, determine whether a vehicle is in a stable state based on comparing at least one system condition against at least one threshold;cause the brake-by-wire sub-system to enter into the service mode when the vehicle is in the stable state; andmonitoring the at least one system condition against predefined parameters to determine that the vehicle is maintaining the stable state while in the service mode.2. The vehicle system of claim 1 , wherein the service mode is an operational state where braking capabilities of the brake-by-wire sub-system are activated without other vehicle system support.3. The vehicle system of claim 1 , wherein the request is generated by the insertion of a fuse into the vehicle system.4. The vehicle system of claim 1 , wherein the vehicle system conducts an independent health state assessment of the vehicle by analyzing the at least one system condition of the vehicle.5. The vehicle system of claim 1 , wherein the at least one system condition indicates circumstances of and surrounding the vehicle.6. The vehicle system of claim 1 , wherein the at least one system ...

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Номер записи: 46
03-03-2022 дата публикации

VEHICLE BRAKE CONTROL SYSTEM AND METHOD

Номер: US20220063574A1
Автор: Gaughan Edward W., Potter William John
Принадлежит:

A brake control system includes one or more processors communicatively connected to at least one sensor configured to output at least one property measurement of air in a brake pipe of a vehicle braking assembly. The one or more processors are configured to determine, based on the at least one property measurement, a pressure reduction lower limit (PRLL) in the brake pipe. The one or more processors are further configured to control movement of a vehicle system that includes the brake pipe to enforce the PRLL by preventing a pressure reduction in the brake pipe that is less than the PRLL while one or more air reservoirs of the vehicle braking assembly are at a reduced charge state.

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Номер записи: 47
14-02-2019 дата публикации

BRAKE DEVICE FOR VEHICLE

Номер: US20190047533A1
Автор: OTA Yuki
Принадлежит: ADVICS CO., LTD.

This brake device is provided with: a brake actuator which applies to a wheel a brake torque depending on the rotation of an electric motor; a booster circuit which boosts a reference voltage outputted from a battery; and a motor control unit which controls the electric motor. Depending on the state of the booster circuit, the motor control unit switches between a first drive process for driving the electric motor by supplying thereto a boost voltage, which is a voltage that has been boosted by the booster circuit, and a second drive process for driving the electric motor by supplying a reference voltage to the electric motor and by performing spark advance control. 1. A brake device for a vehicle , the device comprising:a brake actuator including an electric motor and configured to apply brake torque to a wheel in accordance with a rotary amount of the electric motor;a booster circuit configured to boost a reference voltage, the reference voltage being a voltage output from a vehicle-mounted power source; anda motor control unit configured to control the electric motor,wherein the motor control unit is configured to switch between a first drive process to drive the electric motor by supplying the electric motor with a boost voltage, the boost voltage being a voltage boosted by the booster circuit, and a second drive process to drive the electric motor by a spark advance control by supplying the electric motor with the reference voltage supplied from the vehicle-mounted power source, based on a state of the booster circuit.2. The brake device for a vehicle according to claim 1 , further comprising a temperature acquisition unit configured to acquire a temperature of the booster circuit claim 1 ,wherein the motor control unit is configured to perform the first drive process when a temperature of the booster circuit acquired by the temperature acquisition unit is less than a switching temperature determination value and to perform the second drive process when the ...

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Номер записи: 48
25-02-2021 дата публикации

METHOD FOR CONTROLLING ESC INTEGRATED BRAKING SYSTEM

Номер: US20210053543A1
Автор: SEOL Yong Cheol
Принадлежит:

Disclosed is a method of controlling an electronic stability control (ESC) integrated braking system, which includes, when a failure in which pressure is unable to be formed in a master cylinder unit is detected during braking of a vehicle by the ESC integrated braking system, maintaining, by a controller, a braking force applied during the braking by closing designated oil pressure relief valves for coupling the master cylinder unit and a flow channel of a circuit, and when pressure (PC) of a pedal cylinder becomes equal to or greater than pressure (MC) of the circuit based on the maintained braking force, by a brake pedal stepped on by a driver, controlling, by the controller, the designated oil pressure relief valves to be in an open state and then switching the state of the designated oil pressure relief valves to a mechanical backup state. 1. A method of controlling an electronic stability control (ESC) integrated braking system , the method comprising:when a failure in which pressure is unable to be formed in a master cylinder unit is detected during braking of a vehicle by the ESC integrated braking system, maintaining, by a controller, a braking force applied during the braking by closing designated oil pressure relief valves for coupling the master cylinder unit and a flow channel of a circuit; and{'b': 1', '1, 'when pressure (PC) of a pedal cylinder unit becomes equal to or greater than pressure (MC) of the circuit based on the maintained braking force, by a brake pedal stepped on by a driver, controlling, by the controller, the designated oil pressure relief valves to be in an open state and then switching the state of the designated oil pressure relief valves to a mechanical backup state.'}2. The method of claim 1 , wherein the circuit is a flow channel comprising inlets valve and outlet valves for forming braking pressure in respective wheel cylinders of front wheels and rear wheels via the designated oil pressure relief valves.3. The method of claim 1 ...

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Номер записи: 49
13-02-2020 дата публикации

Vehicle braking device

Номер: US20200047727A1
Автор: Takashi Shimada
Принадлежит: Honda Motor Co Ltd

A vehicle braking device includes a master cylinder device, a motor cylinder device, first and second shutoff valves (solenoid valves) of a normally-open type which are provided in piping tubes (hydraulic pressure passages) providing communication between the master cylinder device and the motor cylinder device and which operate to open or close the hydraulic pressure passages, and an integrated control unit which performs drive control to close the solenoid valves in response to a pressure rise request. When a pressure rise request is received from any requester, the integrated control unit sets a valve closing characteristic in the course of closing the solenoid valves from the time of reception of the pressure rise request such that the valve closing characteristic for the pressure rise request issued by a second group requester is gentler than the valve closing characteristic for the pressure rise request issued by a first group requester.

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Номер записи: 50
13-02-2020 дата публикации

VEHICLE BRAKING SYSTEM

Номер: US20200047729A1
Автор: UEURA Soichiro
Принадлежит:

A vehicle braking system includes: a master cylinder; a slave cylinder communicated with the master cylinder; a vehicle behavior stabilizer communicated with the slave cylinder; first and second master cut valves, each being a normally closed valve for opening and closing a fluid flow path between the master cylinder and the slave cylinder, for making hydraulic pressures in the slave cylinder and the vehicle behavior stabilizer work in a valve closing direction; a pressure sensor for detecting the hydraulic pressure in the vehicle behavior stabilizer; and a piston controller for advancing first and second slave pistons in the slave cylinder when the hydraulic pressure on the vehicle behavior stabilizer side, detected by the pressure sensor, exceeds a predetermined value, and returning the pistons at a predetermined timing. 1. A vehicle braking system comprising:a master cylinder for generating a hydraulic pressure in response to a pedal effort of a driver;a slave cylinder communicated with the master cylinder, for generating a braking force for a vehicle using a hydraulic pressure by operating an electric actuator to drive a piston;a vehicle behavior stabilizer communicated with the slave cylinder, for generating a braking force for each wheel of the vehicle using a hydraulic pressure;a master cut valve that is a normally closed valve for opening and closing a fluid flow path between the master cylinder and the slave cylinder, for making a hydraulic pressure downstream of the master cut valve work in a valve closing direction;a pressure sensor for detecting the hydraulic pressure downstream of the master cut valve; anda piston controller for advancing the piston in the slave cylinder when the hydraulic pressure detected by the pressure sensor exceeds a predetermined value, and returning the piston at a predetermined timing.2. The vehicle braking system according to claim 1 , wherein the piston controller changes an amount by which to advance the piston claim 1 , ...

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Номер записи: 51
13-02-2020 дата публикации

Electromechanical brake booster, vehicle brake system and assembly for this

Номер: US20200047733A1
Автор: Jennifer Klein, Jörg Rönz, José Manuel CALVO, Kurt Wingender, Marcus Höbner
Принадлежит: ZF Active Safety GmbH

A brake booster is comprised of an actuation unit, which can be coupled to a brake cylinder. The actuation unit is comprised of at least one actuation element that can be coupled to an electric motor via a transmission and at least one actuation element that can be coupled to a power input element. The actuation unit also includes at least one power transmission element that can be coupled to at least one actuation element in a power-transmitting manner, and at least one power take-up element that can be coupled or is coupled to an actuation detection device for the detection of an actuation of the electromechanical brake booster. The power take-up element can be coupled or is coupled to at least one actuation element. The power take-up element is configured to limit a relative movement of the actuation element relative to the power transmission element.

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Номер записи: 52
22-02-2018 дата публикации

Electric brake system

Номер: US20180050670A1
Автор: Hansjerg FEIGEL
Принадлежит: Mando Corp

According to an aspect of the present disclosure, it provides an electronic brake system including a pedal simulator configured to provide a reaction force according to a pedal force of a brake pedal, an actuator configured to generate a hydraulic pressure using an actuator piston that operates by an electrical signal output corresponding to a displacement of the brake pedal and including a first chamber provided at one side of the actuator piston movably accommodated in an actuator cylinder and connected to one or more wheel cylinders and a second chamber provided at the other side of the actuator piston and connected to one or more wheel cylinders, a first hydraulic circuit including first and second inlet flow channels branched from a first hydraulic flow channel configured to communicate with the first chamber to be connected to two wheel cylinders, respectively a second hydraulic circuit including third and fourth inlet flow channels branched from a second hydraulic flow channel configured to communicate with the second chamber to be connected to two wheel cylinders, respectively, and a reservoir connected to the actuator and the first and second hydraulic circuits and configured to store brake fluid, wherein a hydraulic pressure unit connected from the actuator to the one or more wheel cylinders are hydraulically separated from a pedal force unit connected from the brake pedal to the pedal simulator.

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Номер записи: 53
22-02-2018 дата публикации

BRAKE-BY-WIRE SYSTEM INCLUDING COASTDOWN MODE

Номер: US20180050672A1
Автор: Chappell Christopher C., Kilmurray Paul A., Pennala Brandon C.
Принадлежит:

A vehicle is provided. The vehicle includes a vehicle system. The vehicle system includes a brake-by-wire portion, which also includes a controller. The controller can cause a forced coastdown of the vehicle. The forced coastdown includes performing analyzing conditions of the vehicle system to determine whether the vehicle is in a stable state and to determine an amount of energy available to the vehicle system and automatically applying the forced coastdown when the vehicle is not in the stable state and the amount of energy is less than or equal to a threshold for continued manual operation of the vehicle. The forced coastdown also includes utilizing brake pressure to reduce a speed of the vehicle. 1. A vehicle system of a vehicle , the vehicle system comprising:a brake-by-wire portion comprising a controller configured to cause a forced coastdown of the vehicle by causing the vehicle system to perform:analyzing conditions of the vehicle system to determine whether the vehicle is in a stable state and to determine an amount of energy available to the vehicle system; andautomatically applying the forced coastdown when the vehicle is not in the stable state and the amount of energy is less than or equal to a threshold for continued manual operation of the vehicle, wherein the forced coastdown comprises utilizing brake pressure to reduce a speed of the vehicle.2. The vehicle system of claim 1 , wherein the controller is configured to cause the vehicle system to perform:determining that the vehicle system is operating on back-up power,wherein the amount of energy is an amount of the back-up power.3. The vehicle system of claim 1 , wherein the controller is configured to cause the vehicle system to perform:determining whether a degraded state should be applied to the continued manual operation of the vehicle.4. The vehicle system of claim 1 , wherein the controller is configured to cause the vehicle system to perform:determining an amount of energy required to execute ...

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Номер записи: 54
23-02-2017 дата публикации

ELECTRICALLY CONTROLLED BRAKE SYSTEM IN A VEHICLE AND METHOD THEREOF

Номер: US20170050629A1
Автор: KIM Hak-Burm
Принадлежит:

Disclosed herein is an electrically controlled brake system. The electrically controlled brake system includes a motor and a pump, a master cylinder, a reservoir that is coupled to an upper portion of the master cylinder and in which a brake fluid is stored, an accumulator in which a brake fluid pumped from the reservoir is stored by the motor and the pump, a hydraulic path that connects the accumulator and each of wheel cylinders, an apply valve and a release valve that are provided on the hydraulic path and control a hydraulic pressure transferred from the accumulator to each of the wheel cylinders, a pedal simulator including a simulation chamber connected to the master cylinder and configured to store a brake fluid flowing from the master cylinder to provide a reaction force of a brake pedal, and a simulation valve provided at an inlet of the simulation chamber, a backup path that is connected to the hydraulic path and connects the master cylinder and each of the wheel cylinders, a cut valve that is provided on the backup path and blocks the backup path, a first pressure sensor that is provided on the backup path and detects a pressure of the pedal simulator, a second pressure sensor that is provided on the hydraulic path and detects a pressure of the hydraulic path and an electronic control unit (ECU) that determines whether a mechanical leak failure of the cut valve occurs using a correlation between the pressure of the pedal simulator detected by the first pressure sensor and the pressure of the hydraulic path detected by the second pressure sensor. 1. An electrically controlled brake system comprising:a motor and a pump;a master cylinder;a reservoir that is coupled to an upper portion of the master cylinder and in which a brake fluid is stored;an accumulator in which a brake fluid pumped from the reservoir is stored by the motor and the pump;a hydraulic path that connects the accumulator and each of wheel cylinders;an apply valve and a release valve that are ...

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Номер записи: 55
10-03-2022 дата публикации

Brake system

Номер: US20220073039A1
Автор: Michael Putz
Принадлежит: GREENBRAKES GMBH

The invention relates to a brake system comprising at least one brake with a frictional surface, a pad carrier with a brake pad, and a control and monitoring unit. According to the invention, the brake system additionally comprises a brake temperature sensor which is connected to the control and monitoring unit that is designed to ascertain brake temperature maintenance values on the basis of the brake effectiveness request, to compare a temperature ascertained by the brake temperature sensor with corresponding brake temperature maintenance values, and to ascertain at least one correction factor on the basis of a deviation. The control and monitoring unit is additionally designed to correct the brake control signal by the at least one correction factor and to actuate the controller using the corrected brake control signal.

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Номер записи: 56
10-03-2022 дата публикации

TIRE STIFFNESS ESTIMATION AND ROAD FRICTION ESTIMATION

Номер: US20220073042A1
Автор: Hammarling Tobias Carl Wilhelm, Myklebust Christer Andreas
Принадлежит:

Methods, computer program products and apparatuses for estimating the uncertainty of a friction potential value of a wheel of a vehicle are disclosed. The method for estimating the uncertainty of a friction potential value of a wheel of a vehicle comprises obtaining a range of tire models (). The method further comprises receiving a sensor signal () indicative of at least one actual tire-related value. Finally, a friction uncertainty value is calculated () based on the received sensor signal and the range of tire models. The friction uncertainty value is indicative of the uncertainty of the friction potential. 1. A method for estimating uncertainty of a friction potential value of a wheel of a vehicle , comprising:obtaining a range of tire models;receiving a sensor signal indicative of at least one actual tire-related value; andcalculating a friction uncertainty value based on the received sensor signal and the range of tire models, indicative of the uncertainty of the friction potential.2. The method according to claim 1 , wherein:the obtaining includes obtaining or estimating a tire model uncertainty, indicative of an uncertainty of the range of tire models; andthe calculating of the friction uncertainty value is based on the tire model uncertainty value.3. The method according to claim 1 , wherein the range of tire models comprises a lower bound tire model and an upper bound tire model.4. The method according to claim 3 , wherein the calculating includes:estimating a lower bound friction value based on the received sensor signal and the lower bound tire model;estimating an upper bound friction value based on the received sensor signal and the upper bound tire model; andthe calculating of the friction uncertainty value is based on a difference of the upper bound friction value and the lower bound friction value.5. The method according to claim 1 , wherein the at least one actual tire-related value is selected from a group comprising:slip, (normalized) traction ...

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Номер записи: 57
21-02-2019 дата публикации

BRAKING DEVICE FOR A HYDRAULIC MOTOR VEHICLE BRAKE SYSTEM

Номер: US20190054910A1
Автор: Schiel Lothar
Принадлежит:

A braking device for a hydraulic motor vehicle brake system, with an energy-store-free, electronically controlled electric-motor-driven on-demand braking force booster and with a master brake cylinder, in which, for the purpose of reducing the foot force on the brake pedal in the fall-back level, the braking pressure in the pressure chamber is built up stepwise and at least one active surface involved in generating brake pressure is switchable so as to be hydraulically ineffective. 1. A brake device for a hydraulic motor vehicle brake system , comprising:an energy-store-free, electronically controlled brake booster,an electric-motor-powered drive unit which is assigned to the brake booster,wherein when the drive unit is activated the brake booster generates a boosted braking force, and when the drive unit is deactivated the brake booster does not generate any boosted braking force,a master brake cylinder with at least one piston which can be displaced linearly therein and which bounds at least one pressure chamber filled with a pressure medium, in order to generate hydraulic brake pressure,wherein in the case of a usual service braking operation the brake booster acts on the piston, and in the case of an unusual braking operation the muscle force of a driver acts thereon,wherein at least one active area for generating brake pressure in the pressure chamber can be switched to a hydraulically ineffective setting under pressure control in the master brake cylinder, as a result of which the brake pressure in the pressure chamber is built up incrementally, andwherein the active area is switched off by a valve arrangement which is controlled by the pressure in the pressure chamber.2. The brake device as claimed in claim 1 , wherein the active area is formed on the piston.3. The brake device as claimed in claim 1 , wherein the piston is embodied as a stepped piston with the active area and at least one further active area.4. The brake device as claimed in claim 3 , wherein ...

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Номер записи: 58
01-03-2018 дата публикации

Brake-by-wire system

Номер: US20180056959A1
Автор: Alan J. Houtman, Brandon C. Pennala, Christopher C. Chappell, Eric E. Krueger, Kevin S. Kidston, Michael C. Roberts, Patrick J. Monsere, Paul A. Kilmurray, Steven J. Weber
Принадлежит: GM GLOBAL TECHNOLOGY OPERATIONS LLC

A vehicle includes a plurality of brake assemblies and a plurality of electronic brake system (EBS) controllers. The brake assemblies each include an electro-mechanical actuator configured to adjust a torque force applied to a wheel of the vehicle. The EBS controllers are located remotely from one another. Each EBS controller has integrated therein an electronic actuator driver unit that includes an electronic power circuit configured to drive at least one of the electro-mechanical actuators. A first EBS controller is configured to drive a first group of electro-mechanical actuators, and a second EBS controller is configured to drive a second group of electro-mechanical actuators that exclude the electro-mechanical actuators of the first group.

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Номер записи: 59
01-03-2018 дата публикации

BRAKE-BY-WIRE SYSTEM

Номер: US20180056962A1
Автор: Chappell Christopher C., Houtman Alan J., KIDSTON KEVIN S., Kilmurray Paul A., KRUEGER ERIC E., MONSERE PATRICK J., Pennala Brandon C., Roberts Michael C., Weber Steven J.
Принадлежит:

A vehicle with a fault tolerant electronic brake-by-wire (BBW) system includes a plurality of brake assemblies that control braking of a respective wheel of the vehicle. The brake assemblies include a first brake assembly and a second brake assembly. The first brake assembly is integrated with at least one enhanced brake actuator assembly including a first electronic actuator driver circuit in signal communication with a first electro-mechanical actuator. The first brake assembly is configured to adjust a brake force applied to a first wheel of the vehicle. The second brake assembly is integrated with at least one enhanced smart brake actuator assembly including a first actuator controller in signal communication with a second electronic actuator driver circuit. The second electronic actuator driver circuit is in signal communication with a second electro-mechanical actuator that is configured to adjust a brake force applied to a second wheel of the vehicle. 1. A vehicle including a fault tolerant electronic brake-by-wire (BBW) system , the vehicle comprising: a first brake assembly integrated with a first enhanced brake actuator assembly including a first electronic actuator driver circuit in signal communication with a first electro-mechanical actuator that is configured to adjust a brake force applied to a first wheel of the vehicle; and', 'a second brake assembly integrated with a first enhanced smart brake actuator assembly including a first actuator controller in signal communication with a second electronic actuator driver circuit, the second electronic actuator driver circuit being in signal communication with a second electro-mechanical actuator that is configured to adjust a brake force applied to a second wheel of the vehicle., 'a plurality of brake assemblies configured to control braking of a respective wheel of the vehicle, the plurality of brake assemblies including2. The vehicle of claim 1 , wherein the first and second electronic actuator driver ...

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Номер записи: 60
01-03-2018 дата публикации

BRAKE-BY-WIRE SYSTEM

Номер: US20180056963A1
Автор: Houtman Alan J., KRUEGER ERIC E., Weber Steven J.
Принадлежит:

A vehicle is provided. The vehicle includes a plurality of controllers and a driver. Each controller is configured to receive one or more braking signals. Each controller is also configured to generate one or more braking commands in correspondence to the one or more braking signals. The driver is configured to perform a voting operation on the one or more braking commands to determine whether to generate a driving signal to at least one brake. 1. A system comprising:a plurality of controllers,wherein each controller is configured to receive one or more braking signals and to generate one or more braking commands in correspondence to the one or more braking signals; anda driver configured to perform a voting operation on the one or more braking commands to determine whether to generate a driving signal to at least one brake.2. The system of claim 1 , wherein the one or more braking signals include a force signal or a travel signal generated by an emulator.3. The system of claim 2 , wherein each controller is configured to process the force signal or the travel signal to determine whether braking is intended.4. The system of claim 1 , wherein the voting operation detects a number of positive commands of the one or more braking commands to determine whether to generate the driving signal to the at least one brake.5. The system of claim 4 , wherein the voting operation is a two-by scheme that generates the driving signal when the number of positive commands is at least two.6. The system of claim 4 , wherein the voting operation is a three-by scheme that generates the driving signal when the number of positive commands is at least three. The system of claim 4 , comprising:a plurality of drivers,wherein each driver is configured to independently receive the one or more braking commands from each of the plurality of controllers,wherein the plurality of drivers comprises the driver.87. The system of claim claim 4 , wherein each driver is configured to independently control ...

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Номер записи: 61
01-03-2018 дата публикации

BRAKE-BY-WIRE SYSTEM

Номер: US20180056964A1
Автор: Chappell Christopher C., Houtman Alan J., KIDSTON KEVIN S., Kilmurray Paul A., KRUEGER ERIC E., MONSERE PATRICK J., Pennala Brandon C., Roberts Michael C., Weber Steven J.
Принадлежит:

A vehicle includes a plurality of brake assemblies, and a brake request input device. Each brake assembly is coupled to a respective wheel of the vehicle and is configured to control braking of the respective wheel. The brake request input device is configured to output an electronic brake request signal indicating a request to brake at least one of the wheels. Each brake assembly has integrated therein an enhanced smart actuator unit that includes an electronic actuator controller configured to control a braking torque applied to the respective wheel in response to receiving the brake request signal. 1. A vehicle including a fault tolerant electronic brake-by-wire (BBW) system , the vehicle comprising:a plurality of brake assemblies, each brake assembly coupled to a respective wheel of the vehicle and configured to control braking of the respective wheel; anda brake request input device configured to output an electronic brake request signal indicating a request to brake at least one of the wheels,wherein each brake assembly has integrated therein an enhanced smart actuator unit that includes an electronic actuator controller configured to control a torque applied to the respective wheel in response to receiving the brake request signal, andwherein each enhanced smart actuator unit is in electrical communication with one another such that a first actuator controller integrated in a first brake assembly is configured to control a first torque applied to a first wheel coupled to the first brake assembly, and a second torque applied to a second wheel coupled to a second brake assembly that excludes the first actuator controller.2. (canceled)31. The vehicle of , wherein the enhanced smart actuator unit included in each brake assembly further includes:an electro-mechanical actuator that is configured to apply a variable braking force to the respective wheel; andan electronic actuator driver configured to output a high-power signal that drives the electro-mechanical ...

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Номер записи: 62
01-03-2018 дата публикации

BRAKE-BY-WIRE SYSTEM

Номер: US20180056965A1
Автор: Chappell Christopher C., Houtman Alan J., KIDSTON KEVIN S., Kilmurray Paul A., KRUEGER ERIC E., MONSERE PATRICK J., Pennala Brandon C., Roberts Michael C., Weber Steven J.
Принадлежит:

A vehicle includes a plurality of brake assemblies configured to control braking of a respective wheel of the vehicle. The brake assemblies includes a first brake assembly integrated with a smart actuator unit including a first actuator controller and a first electro-mechanical actuator that is configured to adjust a brake force applied to a first wheel coupled to the first brake assembly. A second brake assembly excludes an actuator controller and has installed therein a second electro-mechanical actuator that is configured to adjust a brake force applied to a second wheel coupled to the second brake assembly. At least one electronic actuator driver unit is remotely located from the first and second brake assemblies, and is configured to output a high-power signal that drives the first and second electro-mechanical actuators in response to receiving a digital command signal from the first actuator controller. 1. A vehicle including a fault tolerant electronic brake-by-wire (BBW) system , the vehicle comprising: a first brake assembly integrated with a smart actuator unit including a first actuator controller and a first electro-mechanical actuator that is configured to adjust a brake force applied to a first wheel coupled to the first brake assembly;', 'a second brake assembly excluding an actuator controller and having installed therein a second electro-mechanical actuator that is configured to adjust a brake force applied to a second wheel coupled to the second brake assembly; and', 'at least one electronic actuator driver unit remotely located from the first and second brake assemblies, and configured to output a high-power signal that drives the first and second electro-mechanical actuators in response to receiving a digital command signal from the first actuator controller., 'a plurality of brake assemblies configured to control braking of a respective wheel of the vehicle, the plurality of brake assemblies including2. The vehicle of claim 1 , wherein each of ...

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Номер записи: 63
28-02-2019 дата публикации

BRAKE APPARATUS FOR VEHICLE

Номер: US20190061721A1
Автор: KIM Jong Sung
Принадлежит:

A brake apparatus for a vehicle may including: a cylinder including a supply flow path to supply working fluid of a reservoir and a hydraulic chamber connected to the supply flow path; a piston movably installed in the cylinder, and connected to a brake pedal; an elastic member installed in the hydraulic chamber so as to elastically support the piston; a sealing member installed on the outer surface of the piston so as to be in contact with the inner surface of the hydraulic chamber; and a communication flow path formed on the inner surface of the cylinder along the longitudinal direction of the cylinder, and guiding the working fluid of the hydraulic chamber to the opposite side of the moving direction of the piston, when the piston is moved. 1. A brake apparatus for a vehicle , comprising:a cylinder comprising a supply flow path configured to supply working fluid of a reservoir and a hydraulic chamber connected to the supply flow path;a piston movably installed in the cylinder, and connected to a brake pedal;an elastic member installed in the hydraulic chamber so as to elastically support the piston;a sealing member installed on the outer surface of the piston so as to be in contact with the inner surface of the hydraulic chamber; anda communication flow path formed on the inner surface of the cylinder along the longitudinal direction of the cylinder, which guides the working fluid of the hydraulic chamber to the opposite side of the moving direction of the piston, when the piston is moved.2. The brake apparatus of claim 1 , wherein the hydraulic chamber comprises:a first hydraulic chamber accommodating an end portion of the piston, and having the communication flow path formed therein; anda second hydraulic chamber having a smaller diameter than that of the first hydraulic chamber, and connected to the supply flow path.3. The brake apparatus of claim 2 , wherein the sealing member divides the first hydraulic chamber into two spaces when the piston is moved.4. The ...

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Номер записи: 64
28-02-2019 дата публикации

BRAKING CONTROL DEVICE FOR VEHICLE

Номер: US20190061722A1
Автор: Imai Katsuhisa, KAIHARA Shinichi, Kamura Takanobu, Kyuto Noboru, MOCHIZUKI Hirotaka, TAKEMURA Kazuhiro, Tango Yuta, Yamada Naoki
Принадлежит:

A braking control device for a vehicle is provided, which includes an operating amount detecting part configured to detect an operating amount of a brake pedal, a reaction-force giving part configured to generate a reaction force of the brake pedal, a braking-force generating part configured to generate a braking force for wheels according to the brake pedal operating amount, and an electronic control unit (ECU) electrically connected with them. The ECU includes a processor configured to control the giving part and generating part, and set a braking rigidity characteristic based on a braking rigidity that is a ratio of the reaction force to the operating amount, and a vehicle deceleration. The ECU sets a braking rigidity value so that the braking rigidity value increases as the vehicle deceleration becomes larger. The ECU controls the reaction-force giving part based on the braking rigidity value. 1. A braking control device for a vehicle , comprising:an operating amount detecting part configured to detect an operating amount of a brake pedal;a reaction-force giving part configured to generate a reaction force of the brake pedal;a braking-force generating part configured to generate a braking force for wheels according to the operating amount of the brake pedal; and a control module to control the reaction-force giving part and the braking-force generating part; and', 'a braking rigidity characteristic setting module to set a braking rigidity characteristic based on a braking rigidity that is a ratio of the reaction force of the brake pedal to the operating amount of the brake pedal, and a deceleration of the vehicle,, 'an electronic control unit (ECU) electrically connected with the operating amount detecting part, the reaction-force giving part, and the braking-force generating part, the ECU including a processor configured to executewherein the braking rigidity characteristic setting module sets values of the braking rigidity so that the braking rigidity ...

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Номер записи: 65
28-02-2019 дата публикации

BRAKING DEVICE AND METHOD FOR OPERATING A BREAKING DEVICE

Номер: US20190061726A1
Автор: KOGLSPERGER Christian, LEIBER Heinz, LEIBER Thomas, Unterfrauner Valentin
Принадлежит:

The invention relates to a brake device and a method for operating a brake device, wherein said brake device comprises an actuation device, also a booster device, in particular having an electro-hydraulic drive, a piston cylinder device (main cylinder) in order to supply hydraulic pressure medium to the brake circuits, a valve device for controlling or regulating the supply of the pressure medium and an electronic control or regulating device. According to the invention provision is made for additional pressure medium volume to be supplied in a controlled manner to at least one brake circuit by means of a further piston cylinder device, in particular a double stroke piston and at least one valve controlled by the control or regulating device. 1. An actuation device for a vehicle brake , comprising:an actuation device in the form of a brake pedal,at least one piston cylinder unit which is connected to the vehicle brake via a hydraulic brake circuit to supply pressure medium to the brake circuit and to apply pressure on the vehicle brake, andan electromotive drive for the piston cylinder unit,wherein the at least one piston cylinder unit includes a piston arranged to be directly driven by the electromotive drive, wherein said piston is a double-stroke piston arranged to supply pressure medium to the brake circuits in a controlled manner in both movement directions of the piston, forward stroke and return stroke, wherein at least a first pressure chamber limited by the driven piston supplies pressure medium at the forward stroke and at least a second pressure chamber supplies pressure medium at the return stroke, and wherein both pressure chambers are able to be connected by least a valve device.2. The actuation device according to claim 1 , wherein the connection between the first and second pressure chambers by the valve device claim 1 , including at least one valve claim 1 , is a direct connection claim 1 , whereby the valve device is arranged without any other ...

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Номер записи: 66
17-03-2022 дата публикации

BRAKE SYSTEM

Номер: US20220080935A1
Автор: KONISHI YASUSHI, TERADA Eisuke
Принадлежит:

Provided is a brake system including a main automatic driving ECU, a main actuator, a sub automatic driving ECU, and a sub actuator. The main actuator is configured to receive a braking request from the main automatic driving ECU or a braking request made through an operation of a brake pedal, and to apply a braking force to a vehicle. The sub actuator is configured to receive a braking request from the sub automatic driving ECU, and to apply a braking force to the vehicle. When the main automatic driving ECU has failed, the sub automatic driving ECU is configured to acquire the braking request from the main actuator through the sub actuator, and to cause the main actuator to apply the braking force. 1. A brake system , comprising:a first vehicle control device;a first actuator configured to receive a braking request from the first vehicle control device or a braking request made through an operation of a brake pedal, and to apply a braking force to a vehicle;a second vehicle control device;a second actuator configured to receive a braking request from the second vehicle control device, and to apply a braking force to the vehicle; andan arbitration unit configured to generate a final braking request when the braking request is made through the operation of the brake pedal under a state in which the braking request from the second vehicle control device exists,wherein, when the braking request is made through the operation of the brake pedal under a state in which the first vehicle control device has failed and the braking request from the second vehicle control device exists, the arbitration unit is configured to cause at least one of the first actuator and the second actuator to apply the braking force to the vehicle based on the final braking request generated by acquiring, from the first actuator, the braking request made through the operation of the brake pedal.2. The brake system according to claim 1 , wherein the arbitration unit is configured to cause the ...

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Номер записи: 67
17-03-2022 дата публикации

METHOD FOR ASCERTAINING A FUTURE WHEEL BRAKE PRESSURE OF A HYDRAULIC VEHICLE BRAKING SYSTEM

Номер: US20220080941A1
Автор: Krautter Andreas, Von Keler Johannes
Принадлежит:

For ascertaining a future wheel brake pressure, pressure generator pressures of an external power brake pressure generator are continuously measured at measurement time intervals, the wheel brake pressure changes are ascertained therefrom, and the sum of the wheel brake pressure changes ascertained during a time period prior to the measurement is added to the last measured pressure generator pressure. The wheel brake pressure thus ascertained is considered to be the wheel brake pressure that will prevail after the time period following the measurement of the pressure generator pressure in a wheel brake. 18-. (canceled)9. A method for ascertaining a future wheel brake pressure of a hydraulic vehicle braking system including a brake pressure generator , to which a pressure sensor is connected and to which a hydraulic wheel brake is connected via a valve , the method comprising:ascertaining the future wheel brake pressure, which will prevail in the wheel brake after a response time period following a measurement of the pressure generator pressure, from a pressure generator pressure measured using the pressure sensor;wherein, for each measurement of the pressure generator pressure, a wheel brake pressure change is ascertained in the wheel brake during a measurement time interval following the measurement of the pressure generator pressure, and a sum of those wheel brake pressure changes that were ascertained within a time period, which is as long as the response time period and ends with the measurement of the pressure generator pressure, prior to the measurement of the pressure generator pressure, is added to the measured pressure generator pressure, the response time period including a response time of the pressure sensor and a closing time of the valve, and the response time period being longer than the measurement time interval.10. The method as recited in claim 9 , wherein the wheel brake pressure change ascertained during the response time period including the ...

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Номер записи: 68
08-03-2018 дата публикации

Method for imprinting haptic feedback on a brake pedal

Номер: US20180065606A1
Автор: Tobias Brok
Принадлежит: Audi AG

A method for haptic feedback on a brake pedal of a motor vehicle. A current stability index describing the current driving situation is compared to a stored critical stability index. A haptic feedback is imprinted on the brake pedal of the motor vehicle when the ratio between the current stability index and the critical stability index exceeds a previously defined limit value.

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Номер записи: 69
11-03-2021 дата публикации

ALL-WHEEL DRIVE LINE LOCK FOR WARMING TIRES DURING TRACK USAGE

Номер: US20210070119A1
Автор: FRITZ James, Sanborn Ethan D.
Принадлежит:

A vehicle includes a powerplant, such as an engine, configured to power front and rear wheels, and a controller. The controller is programmed to, brake a first of the front wheels and a first of the rear wheels while powering a second of the front wheels and a second of the rear wheels to warm those tires, and subsequently brake the second front wheel and the second rear wheel while powering the first front wheel and the first rear wheel to warm those tires. 1. A vehicle comprising:a powerplant configured to power front and rear wheels; anda controller programmed to, brake a first of the front wheels and a first of the rear wheels while powering a second of the front wheels and a second of the rear wheels.2. The vehicle of claim 1 , wherein the controller is further programmed to subsequently brake the second front wheel and the second rear wheel while powering the first front wheel and the first rear wheel.3. The vehicle of claim 2 , wherein the first front wheel and the first rear wheel are on opposite sides of the vehicle.4. The vehicle of claim 2 , wherein the first front wheel and the first rear wheel are on a same side of the vehicle.5. The vehicle of claim 1 , wherein the powering of the second front wheel and the powering the first front wheel further includes receiving a driver-demanded torque signal and commanding the powerplant to produce the driver-demanded torque.6. The vehicle of claim 1 , wherein the controller is further programmed to command powerplant torque to idle in response to a timer expiring.7. The vehicle of claim 1 , wherein the controller is further programmed to release brakes associated with the wheels in response to expiration of a timer.8. The vehicle of further comprising:a front differential drivably connected to the front wheels;a rear differential drivably connected to the rear wheels; anda driveshaft connecting between the front differential and the rear differential.9. The vehicle of claim 1 , wherein the powerplant is an engine. ...

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Номер записи: 70
11-03-2021 дата публикации

Operator Interface for a Vehicle Wheel Brake Control System

Номер: US20210070260A1
Автор: Gyetván Péter, Nikiforov Vadim V., Senthilkumar Rajkumar, Zhou Nianqing, Zula Daniel P.
Принадлежит:

An operator interface for a wheel brake control system in a vehicle includes a handle configured for coupling to a fixed reference frame in the vehicle. The handle is configured for movement relative to the fixed reference frame about a pivot axis between a neutral position and one or more input positions. One or more inertial sensors are disposed within the handle. Each sensor is configured to generate an inertial measurement signal indicative of a value of a corresponding inertial measurement associated with movement of the handle and the sensor between the neutral position and the input positions. A controller disposed within the handle is configured to generate an operator command signal responsive to the inertial measurement signals. The operator command signal is configured to cause application or release of a brake in the vehicle. 1. An operator interface for a wheel brake control system in a vehicle , comprising:a handle configured for coupling to a fixed reference frame in the vehicle, the handle configured for movement relative to the fixed reference frame about a pivot axis between a neutral position and a first input position;an inertial sensor disposed within the handle and configured to generate an inertial measurement signal indicative of a value of an inertial measurement associated with movement of the handle and the inertial sensor between the neutral position and the first input position; and,a controller disposed within the handle and configured to generate a first operator command signal responsive to the inertial measurement signal, the first operator command signal configured to cause one of application or release of a brake in the vehicle.2. The operator interface of wherein the pivot axis intersects the inertial sensor.3. The operator interface of wherein the inertial sensor is distant from the pivot axis.4. The operator interface of wherein the inertial sensor comprises an accelerometer.5. The operator interface of wherein the controller is ...

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Номер записи: 71
11-03-2021 дата публикации

System and Method for Controlling a Vehicle Wheel Brake

Номер: US20210070261A1
Автор: Gyetván Péter, Nikiforov Vadim V., Senthilkumar Rajkumar, Zhou Nianqing, Zula Daniel P.
Принадлежит:

A system and method for controlling a vehicle wheel brake are provided. The system includes one or more inertial sensors disposed within a handle coupled to, and configured for movement relative to, a fixed reference frame in the vehicle between a neutral position and one or more input positions. Each sensor generates an inertial measurement signal indicative of a value of an inertial measurement associated with movement of the handle and sensor between the neutral and input positions. A controller receives the signals, identifies a turning point in a rate of change of the value of one of the inertial measurement indicated by the signals, and generates an operator command signal when the value meets a predetermined condition. The operator command signal is configured to cause one of application or release of the wheel brake. 1. A method for controlling a wheel brake in a vehicle , comprising the steps of:receiving an inertial measurement signal generated in response to movement of a handle in the vehicle, the inertial measurement signal indicative of a value of an inertial measurement associated with movement of the handle between a neutral position and a first input position;identifying a turning point in a rate of change of the value of the inertial measurement indicated by the inertial measurement signal; and,generating an operator command signal when a first value of the inertial measurement at the turning point meets a predetermined condition, the operator command signal configured to cause one of application or release of the wheel brake.2. The method of claim 1 , further comprising the steps of:determining a sign of the value of the inertial measurement at the turning point; andestablishing the predetermined condition responsive to the sign of the value of the inertial measurement at the turning point.3. The method of wherein the operator command signal is configured to cause application of the wheel brake when the sign is one of positive and negative and the ...

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Номер записи: 72
11-03-2021 дата публикации

Braking apparatus for vehicle and method of controlling the same

Номер: US20210070262A1
Автор: Yong Cheol SEOL
Принадлежит: Hyundai Mobis Co Ltd

A braking apparatus for a vehicle and a method for controlling the same. The braking apparatus includes a master cylinder configured to form braking pressure based on an input to a brake pedal and transmit the braking pressure to a wheel brake side, a motor configured to control the pressure transmitted to the wheel brake side by moving a piston included in the master cylinder, and a controller configured to control the motor. The controller determines whether the piston reaches an end point of travel, based on a rate of change in a position of the piston and a current of the motor, and sets a displacement of the piston as a maximum displacement when it is determined that the piston has reached the end point and position initialization for the piston has been completed.

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Номер записи: 73
15-03-2018 дата публикации

Brake control apparatus

Номер: US20180072285A1
Автор: Kenichiro Matsubara, Kimio Nishino, Masayoshi Okamiya, Wataru Yokoyama, Yuki Tanaka
Принадлежит: HITACHI AUTOMOTIVE SYSTEMS LTD

A parking brake control apparatus 20 drives an electric motor 43 B to advance a piston 39 according to an application request signal from a parking brake switch 19 . The parking brake control apparatus 20 includes a running state detection portion that calculates a running state about whether a vehicle is running or stopped based on a wheel signal from a wheel speed sensor 18 . When the running state cannot be calculated by the running state detection portion, the parking brake control apparatus 20 controls the electric motor 43 B in such a manner that the thrust force of the piston 39 changes at a lower time rate of change than when the running state can be calculated.

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Номер записи: 74
16-03-2017 дата публикации

ELECTRIC BRAKE SYSTEM

Номер: US20170072919A1
Автор: JEON In-Wook
Принадлежит:

An electric brake system is disclosed. The electric brake system comprises a hydraulic pressure supply device configured to generate hydraulic pressure using a hydraulic piston that is activated by means of an electrical signal output corresponding to a displacement of a brake pedal, wherein the hydraulic pressure supply device includes: a cylinder block; first and second hydraulic pistons movably accommodated inside the cylinder block and configured to perform a reciprocal movement by means of a rotational force of a motor; a first pressure chamber comparted by means of one side of the first hydraulic piston, one side of the second hydraulic piston, and the cylinder block, and configured to communicate with a first hydraulic circuit connected to one or more wheel cylinders; and a second pressure chamber comparted by means of the other side of the second hydraulic piston and the cylinder block, and configured to communicate with a second hydraulic circuit connected to the one or more wheel cylinders. 1. An electric brake system comprising:a hydraulic pressure supply device configured to generate hydraulic pressure using a hydraulic piston that is activated by means of an electrical signal output corresponding to a displacement of a brake pedal,wherein the hydraulic pressure supply device includes:a cylinder block;first and second hydraulic pistons movably accommodated inside the cylinder block and configured to perform a reciprocal movement by means of a rotational force of a motor;a first pressure chamber comparted by means of one side of the first hydraulic piston, one side of the second hydraulic piston, and the cylinder block, and configured to communicate with a first hydraulic circuit connected to one or more wheel cylinders; anda second pressure chamber comparted by means of the other side of the second hydraulic piston and the cylinder block, and configured to communicate with a second hydraulic circuit connected to the one or more wheel cylinders.2. The ...

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Номер записи: 75
16-03-2017 дата публикации

Brake System for Motor Vehicles

Номер: US20170072920A1
Автор: Besier Marco, Drumm Stefan
Принадлежит: Continental Teves AG & Co. oHG

A brake system for motor vehicles controllable by a driver or independently of the driver, comprises first and second brake actuation sensors. First and second electrically controllable pressure sources, can actuate the wheel brakes. A first electronic control unit controls the first pressure source, and is connected to the first brake actuation sensor. A second electronic control unit controls the second pressure source and is connected to the second brake actuation sensor. A hydraulic control device comprises a first solenoid valve between the wheel brakes and the first pressure source and a second solenoid valve between the wheel brakes and the second pressure source. There is a data connection between the first electronic control unit and the second electronic control unit. The first electronic control unit has a first interface and the second electronic control unit has a second interface that are not connected to each other. 1. A brake system for motor vehicles , which can be actuatable in a “brake-by-wire” operating mode by one of a driver and independently of the driver , comprising:a brake pedal;at least two hydraulically operated wheel brakes;a first and a second brake operation sensor;a first electrically controllable pressure source by which the wheel brakes can be operated;a first electronic control unit connected to the first brake operation sensor and operable to activate the first pressure source, wherein the first electronic control unit comprises a first interface;a second electrically controllable pressure source by which the wheel brakes can be operated;a second electronic control unit connected to the second brake operation sensor and operable to activate the second pressure source, wherein the second electronic control unit comprises a second interface;a hydraulic control device, which comprises at least one first solenoid valve between the wheel brakes and the first pressure source, and a second solenoid valve between the wheel brakes and the ...

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Номер записи: 76
16-03-2017 дата публикации

Method for Controlling a Brake System

Номер: US20170072924A1
Автор: Kaufmann Tom, Stauder Peter
Принадлежит: Continental Teves AG & Co. oHG

A brake system comprises a cylinder-piston unit movable by an electromechanical actuator. Wheel brakes associated with at least one axle can be supplied with braking pressure via the hydraulic pressure chamber. The electromechanical actuator comprises a rotation-translation transmission and an electronically commutated synchronous machine having a stator with at least two phase windings, a rotor comprising at least one permanent magnet and at least one rotor position sensor. A torque-forming current and/or a magnetic field attenuating current are adjusted in a co-ordinate system which is fixed relative to the rotor. Voltages in the co-ordinate system are detected to serve as control variables and are transformed into a voltage phasor, which indicates for each phase winding of the stator, a voltage to be applied, and a set value for the magnetic field attenuating current is limited to a maximum value being determined from a predetermined characteristic map. 1. A method of operating a brake system for motor vehicles with an electrically controllable pressure supply device comprising:supplying brake pressure to a plurality of hydraulic wheel brakes from a hydraulic pressure chamber;displacing a piston within the hydraulic pressure chamber with an electromechanical actuator, wherein the electromechanical actuator comprises a rotation-translation gearbox and an electrical machine, wherein the electrical machine is an electronically commutated synchronous machine having a stator with at least two phase windings and a rotor comprising at least one permanent magnet as well as at least one rotor position sensor;regulating at least one of a torque-forming current and a magnetic field attenuation current in a coordinate system that is fixed relative to the rotor;transforming voltages in the coordinate system into control variables using the measured rotor position, wherein the control variable are a voltage vector that gives a voltage to be applied for each phase winding of ...

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Номер записи: 77
16-03-2017 дата публикации

ELECTRIC BRAKE SYSTEM

Номер: US20170072927A1
Автор: JEON In-Wook
Принадлежит:

An electric brake system is disclosed. The electric brake system includes a hydraulic pressure supply device configured to generate hydraulic pressure using a piston that is activated by means of an electrical signal output corresponding to a displacement of a brake pedal, and including a first pressure chamber provided at one side of the piston, which is movably accommodated inside a cylinder block, and connected to one or more wheel cylinders, and a second pressure chamber provided at the other side of the piston and connected to one or more wheel cylinders, a first hydraulic circuit including a first hydraulic flow path communicating with the first pressure chamber, and first and second branching flow paths that branch from the first hydraulic flow path to be connected to two wheel cylinders, respectively, a second hydraulic circuit including a second hydraulic flow path communicating with the second pressure chamber, and third and fourth branching flow paths that branch from the second hydraulic flow path to be connected to two wheel cylinders, respectively, and first to fourth inlet valves configured to control an opening and closing of the first to fourth branching flow paths, respectively. 1. An electric brake system comprising:a hydraulic pressure supply device configured to generate hydraulic pressure using a piston that is activated by means of an electrical signal output corresponding to a displacement of a brake pedal, and including a first pressure chamber provided at one side of the piston, which is movably accommodated inside a cylinder block, and connected to one or more wheel cylinders, and a second pressure chamber provided at the other side of the piston and connected to one or more wheel cylinders;a first hydraulic circuit including a first hydraulic flow path communicating with the first pressure chamber, and first and second branching flow paths that branch from the first hydraulic flow path to be connected to two wheel cylinders, respectively; ...

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Номер записи: 78
16-03-2017 дата публикации

ELECTRIC BRAKE SYSTEM

Номер: US20170072928A1
Автор: JEON In-Wook, Kim Hyun-ho
Принадлежит:

An electric brake system is disclosed. The electric brake system includes a master cylinder configured to discharge oil according to a pedal effort of a brake pedal, a simulation device provided with a simulator valve provided at a flow path connecting a simulation chamber, which is connected to the master cylinder to accommodate oil therein, to a first reservoir for storing oil therein so as to provide a reaction force according to the pedal effort of the brake pedal, and an inspection valve provided at a flow path connecting the first reservoir to the master cylinder or at a flow path connecting the master cylinder to the simulation device. 1. An electric brake system comprising:a master cylinder configured to discharge oil according to a pedal effort of a brake pedal;a simulation device provided with a simulator valve provided at a flow path connecting a simulation chamber, which is connected to the master cylinder to accommodate oil therein, to a first reservoir for storing oil therein so as to provide a reaction force according to the pedal effort of the brake pedal; andan inspection valve provided at a flow path connecting the first reservoir to the master cylinder or at a flow path connecting the master cylinder to the simulation device,wherein the simulator valve is provided to open the flow path connecting the simulation chamber to the first reservoir in a normal mode, and to block the flow path connecting the simulation chamber to the first reservoir in an abnormal mode, andwherein the inspection valve is provided to open the flow path connecting the first reservoir to the master cylinder or the flow path connecting the master cylinder to the simulation chamber in a braking mode, and to block the flow path connecting the first reservoir to the master cylinder or the flow path connecting the master cylinder to the simulation chamber in an inspection mode.2. The electric brake system of claim 1 , further comprising:a second reservoir connected to the master ...

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Номер записи: 79
16-03-2017 дата публикации

ELECTRIC BRAKE SYSTEM

Номер: US20170072929A1
Автор: Kim Hyun-ho
Принадлежит:

An electric brake system is disclosed. The electric brake system comprises a master cylinder connected to a first reservoir storing oil therein, provided with first and second chambers and first and second pistons respectively provided at the first and second chambers, and configured to discharge oil according to a pedal effort of a brake pedal; a simulation device configured to provide a reaction force according to the pedal effort of the brake pedal, and provided with a simulation chamber that is connected to the master cylinder and a simulation flow path to accommodate oil therein; a hydraulic pressure supply device configured to generate hydraulic pressure using a rotational force of a motor that is activated in response to an electrical signal output corresponding to a displacement of the brake pedal; and a hydraulic control unit configured to deliver the hydraulic pressure delivered from the hydraulic pressure supply device to a wheel cylinder provided at each of wheels, and connected to the first and second chambers of the master cylinder through first and second backup flow paths and connected to the hydraulic pressure supply device through a hydraulic flow path, wherein hydraulic pressure provided from the master cylinder is selectively delivered to the simulation flow path and the first and second backup flow paths. 1. An electric brake system comprising:a master cylinder connected to a first reservoir storing oil therein, provided with first and second chambers and first and second pistons respectively provided at the first and second chambers, and configured to discharge oil according to a pedal effort of a brake pedal;a simulation device configured to provide a reaction force according to the pedal effort of the brake pedal, and provided with a simulation chamber that is connected to the master cylinder and a simulation flow path to accommodate oil therein;a hydraulic pressure supply device configured to generate hydraulic pressure using a rotational ...

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Номер записи: 80
05-03-2020 дата публикации

HAPTIC FEEDBACK FOR DECOUPLED BRAKE SYSTEM

Номер: US20200070792A1
Автор: Bauer Urs, Kuhlman Ryan A.
Принадлежит:

A vehicle braking system includes a brake pedal, a master cylinder, a braking circuit with a wheel cylinder, a brake pressure generator for brake-by-wire braking, and a pedal feel simulator. In response to detecting impending wheel lock-up, a controller conducts an anti-lock braking routine during which the controller is programmed to create an artificial haptic feedback pulse to the brake pedal by opening a normally-open isolation valve between the master cylinder and the brake circuit to move a master cylinder piston until a compensation port opens. 1. A vehicle braking system comprising:a brake pedal;a master cylinder having an input side configured to receive an input from the brake pedal, a first output responsive to a first piston, and second output responsive to a second piston, wherein the master cylinder is in selective communication with a fluid reservoir via first and second compensation ports;first and second braking circuits, each having at least one wheel cylinder and being operable for brake-by-wire operation by a brake pressure generator separate from the brake pedal;a simulator circuit including a pedal feel simulator coupled to the first master cylinder output and configured to be actuated by opening a switchable simulator valve, the pedal feel simulator providing a reaction force to the brake pedal when the switchable simulator valve is in an open position;a first normally-open isolation valve operable to close and isolate the first braking circuit from the first master cylinder output and the simulator circuit;a second normally-open isolation valve operable to close and isolate the second braking circuit from the second master cylinder output; anda controller programmed to activate the brake pressure generator to generate brake fluid pressure in the first and second braking circuits in correlation to the input from the brake pedal, the controller further being programmed to close the first and second normally-open isolation valves during ...

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Номер записи: 81
18-03-2021 дата публикации

Hydraulic Brake System for a Vehicle, and Corresponding Operating Method

Номер: US20210078554A1
Автор: Baehrle-Miller Frank, Brand Christoph, Kurz Edgar, Landesfeind Klaus, Mannherz Edith, Nijakowski Klaus-Dieter, Schuller Wolfgang, Wienken Hubertus
Принадлежит:

A hydraulic brake system for a vehicle includes a master brake cylinder, a hydraulic unit, and multiple wheel brakes. The hydraulic unit Ha at least one brake circuit for modulating the braking pressure in the wheel brakes. At least one wheel brake is paired with a bistable solenoid valve, which is looped into the corresponding fluid channel directly upstream of the paired wheel brake and which enables the braking pressure in the paired wheel brake to be modulated in a de-energized open position and locks the current braking pressure in the paired wheel brake in a de-energized closed position, wherein a volume equalization device which comprises a connectable accumulator opens into the corresponding fluid channel between the bistable solenoid valve and the paired wheel brake. 1. A hydraulic brake system for a vehicle , comprising:a master brake cylinder;a plurality of wheel brakes;a hydraulic unit comprising at least one brake circuit configured to modulate brake pressure in the plurality of wheel brakes;a first bistable solenoid valve associated with at least one wheel brake of the plurality of wheel brakes, which the first bistable solenoid valve seated directly upstream of the at least one wheel brake in a corresponding fluid channel and the first bistable solenoid valve, in a normally open position, enabling brake pressure modulation in the at least one wheel brake and, in a normally closed position, trapping a current brake pressure in the at least one wheel brake; anda volume compensation device comprising a connectable accumulator, the volume compensation device opening into the corresponding fluid channel between the first bistable solenoid valve and the at least one wheel brake.2. The hydraulic brake system as claimed in claim 1 , wherein the volume compensation device further comprises at least one accumulator valve claim 1 , which claim 1 , in an open position claim 1 , connects the accumulator to the at least one wheel brake and claim 1 , in a closed ...

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Номер записи: 82
18-03-2021 дата публикации

BRAKING CONTROL DEVICE AND BRAKING CONTROL METHOD OF CONSTRUCTION MACHINE

Номер: US20210079623A1
Автор: HEO Yeonhaeng, PARK Gyuhong, PARK Kwangseok
Принадлежит:

A brake control apparatus for construction machinery, includes first and second brake lines through which a brake oil is supplied to a front brake device and a rear brake device of the construction machinery, first and second proportional flow control valves installed respectively in the first and second brake lines to control a flow rate of the brake oil in proportion to inputted first and second brake control signals, a sensing portion configured to detect work and travel information of the construction machinery, and a controller configured to output the first and second brake control signals in response to a brake manipulation signal of a driver, and configured to control independently the first and second proportional flow control valves based on the work and travel information of the construction machinery detected by the sensing portion. 1. A brake control apparatus for construction machinery , comprising:first and second brake lines through which a brake oil is supplied to a front brake device and a rear brake device of the construction machinery;first and second proportional flow control valves installed respectively in the first and second brake lines to control a flow rate of the brake oil in proportion to inputted first and second brake control signals;a sensing portion configured to detect work and travel information of the construction machinery; anda controller configured to output the first and second brake control signals in response to a brake manipulation signal of a driver, and configured to control independently the first and second proportional flow control valves based on the work and travel information of the construction machinery detected by the sensing portion.2. The brake control apparatus for construction machinery of claim 1 , wherein the controller converts the brake manipulation signal at a first conversion ratio to generate and output the first brake control signal and converts the brake manipulation signal at a second conversion ...

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Номер записи: 83
31-03-2022 дата публикации

BRAKE ASSIST DURING VEHICLE ONE PEDAL DRIVE

Номер: US20220097660A1
Автор: "ODonnell Devin James", Porras Angel Fernando, Semenov Sergey Gennadievich
Принадлежит:

A vehicle includes friction brakes, an electronic park brake system, and controllers. The controllers, responsive to the vehicle coming to a stop, and the vehicle being on plug, a driver door of the vehicle being open, or a driver seatbelt being unbuckled, issue a standstill friction brake request for the friction brakes and an electronic park brake request for the electronic park brake system. The controllers also, responsive to engagement of the electronic park brake system, discontinue the issue of the standstill friction brake request. 1. A vehicle comprising:friction brakes;an electronic park brake system; and{'claim-text': ['responsive to the vehicle coming to a stop and a driver door of the vehicle being open, issue a standstill friction brake request for the friction brakes and an electronic park brake request for the electronic park brake system, and', 'responsive to engagement of the electronic park brake system, discontinue the issue of the standstill friction brake request.'], '#text': 'one or more controllers programmed to,'}2. The vehicle of claim 1 , wherein the one or more controllers is further programmed to repeatedly issue the standstill friction brake request absent the engagement.3. The vehicle of claim 1 , wherein the one or more controllers is further configured to claim 1 , responsive to the vehicle coming to a stop and being on plug claim 1 , issue the standstill friction brake request and the electronic park brake request.4. The vehicle of claim 1 , wherein the one or more controller is further programmed to claim 1 , responsive to the vehicle coming to a stop and a driver seat belt of the vehicle being unbuckled claim 1 , issue the standstill friction brake request and the electronic park brake request.5. A method for controlling a vehicle claim 1 , comprising:{'claim-text': ['responsive to the vehicle coming to a stop and being on plug, issuing a standstill friction brake request for friction brakes and an electronic park brake request ...

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Номер записи: 84
31-03-2022 дата публикации

Railway Braking System Comprising A Device Displaying A Status Of A Service Brake And/Or A Status Of A Parking Brake And Rail Vehicle Provided With Such A System

Номер: US20220097669A1
Автор: FROMONT Vincent, LESAGE Stéphane
Принадлежит:

A vehicle braking system includes a service brake and/or a parking brake, a network of pneumatic pipes provided for supplying, via at least one pneumatic pressure agent, the service brake and/or the parking brake to place the brake(s) in an engaged state or a disengaged state, and a display device for displaying the engaged state and/or the disengaged state of the service brake and/or of the parking brake. The display device includes at least one pneumatic intake connected to the service brake and/or to the parking brake via the network of pneumatic pipes, at least one electrical input, at least one electro-pneumatic triggering member connected to the pneumatic intake and to the electrical input, and at least one electronic display member connected to the electro-pneumatic triggering member and controlled to display the engaged state or the disengaged state of the service brake and/or of the parking brake. 1. A rail vehicle braking system comprising:one or more of a service brake or a parking brake;a network of pneumatic pipes provided for supplying, via at least one pneumatic pressure agent, the one or more of the service brake or the parking brake to place the one or more of the service brake or the parking brake in an engaged state or in a disengaged state; anda display device for displaying the engaged state or the disengaged state of the one or more of the service brake or the parking brake, wherein the display device comprises at least one pneumatic intake connected to the one or more of the service brake or the parking brake via the network of pneumatic pipes, at least one electrical input, at least one electro-pneumatic triggering member connected to the at least one pneumatic intake and to the at least one electrical input, and at least one electronic display member connected to the electro-pneumatic triggering member and controlled by the latter electro-pneumatic triggering member to display the engaged state or the disengaged state of the one or more of ...

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Номер записи: 85
31-03-2022 дата публикации

POWERTRAIN TO FRICTION BRAKE STANDSTILL HANDOFF FOR ONE PEDAL DRIVE

Номер: US20220097707A1
Автор: "ODonnell Devin James", Bolger Bryan Michael, Crombez Dale Scott, McCollough Alexander, Porras Angel Fernando, Semenov Sergey Gennadievich
Принадлежит:

A method for controlling a vehicle includes monitoring the vehicle speed for a first threshold in conjunction with a driver request for negative torque, after which the method comprises increasing a friction braking ratio. The method further comprises monitoring the speed of the vehicle for a second threshold, wherein the second threshold is lower than the first, after which the method comprises solely using the friction braking for braking holding torque. 1. A vehicle comprising:an electric machine;friction brakes; anda controller programmed to operate the electric machine to selectively regeneratively brake the vehicle based on driver accelerator pedal input, and responsive to a speed of the vehicle achieving or becoming, less than a speed threshold, apply the friction brakes at a holding torque value in an absence of brake pedal input such that when the speed is zero, the friction brakes are active, wherein the speed threshold depends on road grade such that the speed threshold increases as the road grade increases.2. The vehicle of claim 1 , wherein the controller is further programmed to claim 1 , responsive to the speed being zero claim 1 , the friction brakes being active claim 1 , and the driver accelerator pedal input being indicative of a request for forward movement claim 1 , release the friction brakes after the electric machine produces a propulsion torque value at least equal to the holding torque value.3. The vehicle of claim 1 , wherein the controller is further programmed to claim 1 , responsive to the speed being less than a first speed value claim 1 , and greater than a second speed value claim 1 , apply the friction brakes according to a brake ramp schedule.4. The vehicle of claim 3 , wherein the brake ramp schedule depends on the road grade or weight of the vehicle.5. The vehicle of claim 1 , wherein the speed threshold has a minimum value of zero.6. The vehicle of claim 1 , wherein the speed threshold further depends on a weight of the vehicle. ...

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Номер записи: 86
12-03-2020 дата публикации

CONTROLLING AIRCRAFT WHEEL BRAKES

Номер: US20200079332A1
Автор: GADD Matthew, Reid David
Принадлежит:

A method for controlling the application of aircraft wheel brakes including: controlling the application of a first wheel brake of an aircraft and a second wheel brake of the aircraft in dependence upon a determined relationship to control the time taken for the first wheel brake and the second wheel brake to reach respective specified temperatures. The relationship is determined between a first cooling characteristic of the first wheel brake, according to which the first wheel brake cools when in a first retracted position within the aircraft, and a second cooling characteristic of the second wheel brake, according to which the second wheel brake cools when in a second retracted position within the aircraft. 1. A method of controlling application of aircraft wheel brakes , the method comprising:controlling application of a first wheel brake of an aircraft and a second wheel brake of the aircraft in dependence upon a determined relationship in order to control a period during which the first wheel brake and the second wheel brake reach respective specified temperatures,wherein, the relationship is determined between a first cooling characteristic of the first wheel brake, according to which first cooling characteristic the first wheel brake cools when in a first retracted position within the aircraft, and a second cooling characteristic of the second wheel brake, according to which second cooling characteristic the second wheel brake cools when in a second retracted position within the aircraft.2. The method according to claim 1 , comprising determining at least the first cooling characteristic and/or the second cooling characteristic.3. The method according to claim 2 , wherein:the first cooling characteristic is determined based on a first wear indication which indicates the wear state of the first wheel brake; and/orthe second cooling characteristic is determined based on a second indication which indicates the wear state of the second wheel brake.4. The method ...

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Номер записи: 87
12-03-2020 дата публикации

ELECTROPNEUMATIC HAND BRAKE (EPH) HAVING INTEGRATED TCV (EUROPEAN AND SCANDINAVIAN CONTROL)

Номер: US20200079341A1
Автор: VAN THIEL Julian
Принадлежит:

An electropneumatic control module for an electronically controllable pneumatic brake system for a vehicle combination with a tractor vehicle and a trailer vehicle includes a pneumatic reservoir input, which is connectable to a compressed-air reservoir, and a trailer control unit, which has a trailer control valve unit with one or more electropneumatic valves, a trailer brake pressure port and a trailer supply pressure port. The electropneumatic control module further includes an immobilizing brake unit, which has a spring-type actuator port for at least one spring-type actuator for a tractor vehicle and an immobilizing brake valve unit with one or more electropneumatic valves, and an electronic control unit, wherein the electronic control unit is designed to, based on an electronic immobilizing signal, trigger the immobilizing brake valve unit to switch at least one valve of the immobilizing brake valve unit. 1. An electropneumatic control module for an electronically controllable pneumatic brake system for a vehicle combination with a tractor vehicle and a trailer vehicle , the electropneumatic control module comprising:a pneumatic reservoir input, which is connectable to a compressed-air reservoir,a trailer control unit, which has a trailer control valve unit with one or more electropneumatic valves, a trailer brake pressure port and a trailer supply pressure port,an immobilizing brake unit, which has a spring-type actuator port for at least one spring-type actuator for a tractor vehicle and an immobilizing brake valve unit with one or more electropneumatic valves, andan electronic control unit, wherein the electronic control unit is designed to, based on an electronic immobilizing signal, trigger the immobilizing brake valve unit to switch at least one valve of the immobilizing brake valve unit such that the spring-type actuator port is connected to a pressure sink for the purposes of ventilating the spring-type actuator,a parking brake valve unit, having a ...

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Номер записи: 88
12-03-2020 дата публикации

Railway Brake Cylinder Monitoring System and Method

Номер: US20200079342A1
Автор: Gaughan Edward W., Potter William John, Troiani Vincent F.
Принадлежит:

A system and method for monitoring air pressure applied to a brake cylinder of a braking assembly of a railway vehicle, including an empty-load device, and an RFID transducer in communication with the empty-load device, wherein the RFID transducer is configured to measure the air pressure delivered to the brake cylinder of the braking assembly, and generate data on the air pressure delivered to the brake cylinder of the braking assembly; and a remote data monitor configured to read data from the RFID transducer. 1. A system for monitoring an air pressure applied to a brake cylinder of a braking assembly of a railway vehicle , the system comprising:the brake cylinder;an empty-load device, and: measure the air pressure delivered to the brake cylinder of the braking assembly, and', 'generate data on the air pressure delivered to the brake cylinder of the braking assembly; and, 'an RFID transducer in communication with the empty-load device, wherein the RFID transducer is located downstream of the empty-load device, and wherein the RFID transducer is configured toa remote data monitor configured to read data from the RFID transducer.2. The system according to claim 1 , wherein the remote data monitor comprises one or more of a handheld RFID reader and a stationary RFID reader configured to read data from the RFID transducer as at least one railcar of the railway vehicle passes the remote data monitor.3. The system according to claim 1 , wherein the empty-load device comprises:a braking assembly input exhibiting a delivered air pressure,a regulation arrangement configured to regulate air pressure, anda braking assembly output exhibiting a regulated air pressure.4. The system according to claim 1 , wherein the remote data monitor comprises a transmitter configured to transmit data to a remote database.5. The system according to claim 1 , wherein the RFID transducer comprises a passive RFID system.6. The system according to claim 1 , wherein the RFID transducer further ...

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Номер записи: 89
12-03-2020 дата публикации

BRAKE MONITORING SYSTEMS FOR RAILCARS

Номер: US20200079343A1
Автор: Martin Andrew H.
Принадлежит:

A system and method for detecting the operational status of a brake system on a railcar. The system receives from a sensor an indication of the magnitude of a braking force applied by the braking system in response to an instruction to increase or decrease the braking force. It compares the response to possible responses of the braking system in view of the instruction provided. Based on the comparison, the system generates at least one of a message and/or an alert indicating the status of the brake system. Additional sensors, including a pressure sensor on a brake pipe of the railcar, can be added for additional functionality. 1. A system for detecting the operational status of a brake system on a railcar of a train consist , the system comprising:a sensor located on the railcar and configured to generate an output indicative of a magnitude of a braking force applied by the braking system; and receive from the sensor an indication of the magnitude of a braking force applied by the braking system in response to an instruction to increase or decrease the braking force;', 'compare the response to possible responses of the braking system to the instruction to increase or decrease the braking force; and', 'based on the comparison, generate at least one of a message and an alert indicating the status of the brake system., 'a computing device communicatively coupled to the sensor and comprising a computer-readable storage medium comprising one or more programming instructions that, when executed, cause the computing device to2. The system of claim 1 , wherein the one or more programming instructions claim 1 , when executed claim 1 , further cause the computing device to determine whether the brake force decreases below a predetermined threshold in response to the input to decrease the brake force below the predetermined threshold.3. The system of claim 2 , wherein the one or more programming instructions claim 2 , when executed claim 2 , further cause the computing device ...

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Номер записи: 90
05-05-2022 дата публикации

BRAKING SYSTEM OF VEHICLE CAPABLE OF REGENERATIVE BRAKING AND HYDRAULIC BRAKING AND CONTROLLING METHOD THEREOF

Номер: US20220134888A1
Автор: Ko Ji Weon
Принадлежит:

A brake system and a method of controlling the brake system including a pedal master unit, an electric booster unit, a pedal-feel generating unit, and an electric control unit, wherein the pedal master unit includes a master cylinder and an operating rod, the electric booster unit includes a motor, a motor piston, and a gear device-screw shaft combination, the pedal-feel generating unit includes a reaction disk configured to form a pedal feel force (F) and a pedal spring arranged to form a pedal feel force (F), and the electric control unit is configured to variably control, in a regenerative braking mode and in a hydraulic braking mode, a ratio of increase to decrease of the pedal feel force (F) and a ratio of increase to decrease of the pedal feel force (F).

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Номер записи: 91
05-05-2022 дата публикации

INTEGRATED BRAKING DEVICE FOR VEHICLE AND BRAKING METHOD THEREFOR

Номер: US20220135012A1
Автор: LEE Dong Uk
Принадлежит:

An integrated braking device for a vehicle equipped with wheel brakes includes a reservoir, master cylinder, bi-directional pumps each using hydraulic pressure oil from the reservoir for generating hydraulic pressure in first direction to apply braking force to the wheel brakes or generating hydraulic pressure in opposing second direction to control the hydraulic pressure oil from flowing to the reservoir, a hydraulic motor for driving the bi-directional pumps, inlet valves for controlling a hydraulic pressure from flowing from the bi-directional pumps to the wheel brakes, traction control valves each disposed between the master cylinder and each bi-directional pump to control flow of the hydraulic pressure oil inside the master cylinder, and a braking control unit for braking the vehicle by transmitting a driving signal to solenoid valves in the integrated braking device, the bi-directional pumps, and the hydraulic motor to control a flow of the hydraulic pressure.

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Номер записи: 92
01-04-2021 дата публикации

BRAKE SYSTEM AND MOTOR VEHICLE

Номер: US20210094523A1
Автор: DINKEL Dieter
Принадлежит: Continental Teves AG & Co. oHG

A brake system for a motor vehicle, wherein the brake system is divided into two blocks, wherein a separate electric pressure generator is arranged in each block, and a motor vehicle having such a brake system. 1. A brake system for a motor vehicle comprising:a first block;a second block separate from the first block;a brake master cylinder arranged in the first block;a first electric pressure generator arranged in the first block;a second electric pressure generator arranged in the second block;a plurality of inlet valves;a first group of wheel ports arranged on the first block and are connected to the brake master cylinder and the first electric pressure generator via a respective inlet valve; anda second group of wheel ports arranged on the second block and are connected to the second electric pressure generator via a respective inlet valve.2. The brake system as claimed in claim 1 , wherein the wheel ports of the second group are connected to the brake master cylinder via the respective inlet valves and a connecting line connecting the blocks.3. The brake system as claimed in claim 1 , wherein an additional brake cylinder is arranged in the second block claim 1 , the additional brake cylinder has a piston which divides the additional brake cylinder into a first pressure chamber and a second pressure chamber claim 1 , wherein the first pressure chamber is connected to the brake master cylinder via a connecting line connecting the blocks claim 1 , wherein the wheel ports of the second group are connected to the second pressure chamber via the respective inlet valves.4. The brake system as claimed in claim 1 ,wherein the first electric pressure generator is connected via a common sequence valve to inlet valves connected to the first electric pressure generator.5. The brake system as claimed in claim 1 ,wherein the second electric pressure generator is connected via a common sequence valve to inlet valves connected to the second electric pressure generator.6. The ...

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Номер записи: 93
01-04-2021 дата публикации

Apparatus for Diagnosing a Failure in a Negative Pressure Sensor, Method for Diagnosing a Failure in a Negative Pressure Sensor, and Brake Apparatus

Номер: US20210094526A1
Автор: YAMAGUCHI NAOSHI
Принадлежит:

The present invention provides an apparatus for diagnosing a failure in a negative pressure sensor, a method for diagnosing a failure in a negative pressure sensor, and a brake apparatus capable of preventing or cutting down a reduction in a frequency at which an abnormality in the negative pressure sensor is diagnosed. The apparatus for diagnosing the failure in the negative pressure sensor includes a change amount monitoring portion configured to monitor a change amount of a detection signal of the negative pressure sensor when a brake pedal is returned after being pressed, and an abnormality determination portion configured to determine that the negative pressure sensor is abnormal if the change amount is a predetermined change amount or smaller. 1. An apparatus for diagnosing a failure in a negative pressure sensor for detecting a pressure in a negative pressure chamber of a brake booster configured to boost an operation force on a brake pedal , the apparatus for diagnosing the failure in the negative pressure sensor comprising:a change amount monitoring portion configured to monitor a change amount of a detection signal of the negative pressure sensor when the brake pedal is returned after being pressed; andan abnormality determination portion configured to determine that the negative pressure sensor is abnormal if the change amount is a predetermined change amount or smaller.2. The apparatus for diagnosing the failure in the negative pressure sensor according to claim 1 , further comprising a brake release determination portion configured to determine that the brake pedal is returned after being pressed if a speed of a change in a pedal operation amount matches or exceeds a predetermined speed when the brake pedal is returned after being pressed.3. The apparatus for diagnosing the failure in the negative pressure sensor according to claim 2 , further comprising an abnormality diagnosis permission portion configured to permit an abnormality diagnosis by the ...

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Номер записи: 94
05-04-2018 дата публикации

BRAKE PEDAL EMULATOR OF A BRAKE-BY-WIRE SYSTEM

Номер: US20180093648A1
Автор: Browning Grant A., Chappell Christopher C., Houtman Alan J., JR. Robert J., Kilmurray Paul A., Krell Jordan M., Payton, Pennala Brandon C.
Принадлежит:

A brake pedal emulator extends and is connected between a support structure and a brake pedal along a centerline. The emulator includes a hydraulic cylinder, a piston head, and a variable flow communicator. An outer casing of the cylinder engages one of the structure and the pedal. The piston head engages the other of the structure and the pedal, and the communicator is carried between the casing and the piston head. A first chamber is defined at least in-part by the casing and a first side of the piston head, and a second chamber is defined at least in-part by the casing and an opposite second side of the piston head. The piston head is in sealed and slides with respect to the casing, and the communicator is adapted to provide fluid communication between the first and second chambers that varies with axial displacement of the piston head. 1. A brake pedal emulator extending and connected between a support structure and a brake pedal along a centerline , the brake pedal emulator comprising:a hydraulic cylinder including an outer casing engaged to one of the support structure and the brake pedal, a piston head engaged to the other of the support structure and the brake pedal, and a variable flow communicator carried between the outer casing and the piston head; andwherein a first chamber is defined at least in-part by the outer casing and a first side of the piston head, a second chamber is defined at least in-part by the outer casing and an opposite second side of the piston head, the piston head is in sealed and sliding relationship with the outer casing, and the variable flow communicator is constructed and arranged to provide fluid communication between the first and second chambers that varies with axial displacement of the piston head.2. The brake pedal emulator set forth in claim 1 , wherein the variable flow communicator includes a tube extending axially claim 1 , spaced radially inward from the outer casing and in fixed association with the outer casing.3. ...

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Номер записи: 95
12-05-2022 дата публикации

FLOOR MOUNTED BRAKE PEDAL

Номер: US20220144224A1
Автор: FEIGEL Hans Joerg, Kurbasa Josko, TARANDEK Kristijan
Принадлежит:

The invention relates to a floor mounted brake pedal for an electrically controlled vehicle brake, comprising a first pedal lever, a second pedal lever arranged in front of the first pedal lever, a pedal platform having a stepping area and a shaft protruding from the stepping area in a forward direction, a first pedal sensor for detecting a position of the brake pedal, and a second pedal sensor for independently detecting the position of the brake pedal. 1. A floor mounted brake pedal for an electrically controlled vehicle brake , comprising:a first pedal lever;a second pedal lever arranged in front of the first pedal lever;a pedal platform having a stepping area and a shaft protruding from the stepping area in a forward direction;a first pedal sensor for detecting a position of the brake pedal; anda second pedal sensor for independently detecting the position of the brake pedal,each of the first pedal lever and the second pedal lever being bottom-hinged by means of a first hinge at a bottom end and having a second hinge at a top end, the second hinge of the first pedal lever connecting the first pedal lever to the pedal platform, and the second hinge of the second pedal lever connecting the second pedal lever to the shaft of the pedal platform in front of the second hinge of the first pedal lever.2. The floor mounted brake pedal of claim 1 , further comprising at least one of an elastic pedal feel simulator supporting one of the first and second pedal levers or the pedal platform and a mechanical damping device connected to one of the first and second pedal levers or to the pedal platform.3. The floor mounted brake pedal of claim 1 , wherein the first pedal sensor is arranged at the bottom end of the first pedal lever and the second pedal sensor is arranged at the bottom end of the second pedal lever.4. The floor mounted brake pedal of claim 1 , further comprising a mechanism for storing the pedal platform in a lower position in at least one of a parking mode and ...

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Номер записи: 96
12-05-2022 дата публикации

METHOD AND DEVICE FOR OPERATING A BRAKE SYSTEM OF A MOTOR VEHICLE, BRAKE SYSTEM, AND MOTOR VEHICLE

Номер: US20220144240A1
Автор: Henning Wadim, Huff Mike, Malkin Anatoly
Принадлежит:

A method for operating a brake system of a motor vehicle. The brake system includes a master brake cylinder operable by a user and a pressure generator driven by an electric motor, for generating a hydraulic system pressure, and includes at least one hydraulically operable friction brake. On the inlet side, the at least one friction brake is assigned a proportioning valve acted upon by the system pressure, to adjust a hydraulic actuating pressure for the friction brake. The pressure generator is given a setpoint value for carrying out a testing operation. The setpoint value is selected so as to be smoothed by a logistical growth function. 18-. (canceled)9. A method for operating a brake system of a motor vehicle , the brake system including a master brake cylinder operable by a user and a pressure generator driven by an electric motor , for generating a hydraulic system pressure , and including at least one hydraulically operable friction brake , on an inlet side , the at least one friction brake being assigned a proportioning valve acted upon by the system pressure , to adjust a hydraulic actuating pressure for the friction brake , the method comprising:providing to the pressure generator a setpoint value for carrying out a testing operation;wherein the setpoint value is selected so as to be smoothed by a logistical growth function.11. The method as recited in claim 10 , wherein a value that is 1% of the step height or less claim 10 , is selected as starting value y(0).12. The method as recited in claim 10 , wherein a value between 0.05 and 0.0005 is set as starting value y(0).13. The method as recited in claim 10 , wherein a value between 0.04 and 0.001 is set as a starting value y(0).14. The method as recited in claim 10 , wherein a value of 0.04 or 0.001 is set as a starting value y(0).15. The method as recited in claim 10 , wherein the growth rate (R) is set to a value between 0.7 and 0.1.16. The method as recited in claim 10 , wherein the growth rate (R) is ...

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Номер записи: 97
28-03-2019 дата публикации

ELECTRONIC BRAKE SYSTEM

Номер: US20190092174A1
Автор: LEE Eun Ha
Принадлежит:

Provided are an electronic brake system and a method of controlling the same. The electronic brake system includes a pedal input unit configured to receive a pedal force according to a driver's braking intention, an estimating unit configured to estimate a temperature and a friction coefficient of a brake disk pad, and a control unit configured to correct a braking target pressure according to the driver's braking intention on the basis of the estimated temperature and friction coefficient of the brake disk pad. 1. An electronic brake system comprising:a pedal input unit configured to receive a pedal force according to a driver's braking intention; anda control unit configured to calculate a braking target pressure according to the driver's braking intention, and perform a hydraulic control by an error between a target pressure adjusted on the basis of a target pressure compensation ratio and an actual regenerative braking pressure.2. The electronic brake system of claim 1 , wherein the control unit further comprises:a regenerative braking cooperative control unit configured to perform a regenerative braking cooperative control on the electronic brake system,wherein the regenerative braking cooperative control unit compensates a torque factor at a time of a regenerative braking in consideration of an estimated temperature of a disk pad and an estimated friction coefficient of the disk pad.3. The electronic brake system of claim 2 , wherein the control unit sets the target pressure compensation ratio and a torque factor compensation ratio to differ for each preset temperature section.4. The electronic brake system of claim 3 , wherein the control unit calculates an actual target pressure on the basis of the target pressure compensation ratio claim 3 , calculates an actual regenerative braking pressure on the basis of the torque factor compensation ratio claim 3 , and calculates a hydraulic braking force according to a difference between the calculated target pressure ...

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Номер записи: 98
28-03-2019 дата публикации

ELECTRONIC BRAKE SYSTEM AND METHOD OF OPERATING THE SAME

Номер: US20190092295A1
Автор: Choi Seong Ho, JEONG Hyojin
Принадлежит:

Disclosed are an electronic brake system and a method of operating the same, the electronic brake system including a master cylinder configured to discharge a pressurized medium according to a displacement of a brake pedal, a simulation device configured to provide a driver with a pedal feel, a fluid pressure supply device configured to generate a fluid pressure by operating a hydraulic piston according to an electrical signal output to correspond to the displacement of the brake pedal, and a fluid pressure control unit configured to control a fluid pressure of a pressurized medium supplied to each wheel cylinder, in which a normal operation mode, an abnormal operation mode, and a test mode are performed. 1. An electronic brake system comprising:a reservoir in which a pressurized medium is stored;a master cylinder including a master chamber and a master piston configured to have a position thereof changed according to an operation of a brake pedal and pressurize and discharge a pressurized medium accommodated in the master chamber according to the changed position of the master piston;a simulation device including a simulation chamber and a simulation piston configured to have a position thereof changed according to the pressurized medium discharged from the master chamber and pressurize and discharge a pressurized medium accommodated in the simulation chamber according to the changed position of the simulation position;a reservoir passage configured to communicate the master chamber, the simulation chamber, and the reservoir with each other;a simulator check valve provided on the reservoir passage and configured to allow only a flow of a pressurized medium directed from the reservoir to the master chamber and the simulation chamber; anda simulator valve provided on a bypass passage connected in parallel to the simulator check valve on the reservoir passage and configured to control flows of a pressurized medium in opposite directions.2. The electronic brake system ...

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Номер записи: 99
28-03-2019 дата публикации

ELECTRIC BRAKE SYSTEM AND OPERATING METHOD THEREOF

Номер: US20190092300A1
Автор: Choi Seong Ho, JEONG Hyojin
Принадлежит:

Disclosed herein are an electric brake system and an operating method thereof. The electric bake system includes a master cylinder discharging pressure medium according to a displacement of a brake pedal, a simulator providing a sense of pedal to a driver, a hydraulic supplier generating hydraulic pressure by operating a hydraulic piston in response to an electrical signal output by corresponding to the displacement of the brake pedal, and a hydraulic control unit controlling hydraulic pressure of the pressure medium supplied to each wheel cylinder. The electric brake system performs a normal operation mode having a low pressure mode and a high pressure mode, an abnormal operation mode and an inspection mode. 1. An electric brake system comprising:a hydraulic supplier configured to generate hydraulic pressure by operating a hydraulic piston by an electrical signal, which is output corresponding to a displacement of a brake pedal, and provided with a first pressure chamber provided on one side of the hydraulic piston movably accommodated in a cylinder block and a second pressure chamber provided on the other side of the hydraulic piston; anda hydraulic control unit provided with a first hydraulic circuit configured to control hydraulic pressure transmitted to two wheel cylinders, and a second hydraulic circuit configured to control hydraulic pressure transmitted to other two wheel cylinders,wherein the hydraulic control unit comprises a first hydraulic flow path communicated with the first pressure chamber, a second hydraulic flow path diverged from the first hydraulic flow path, a third hydraulic flow path diverged from the first hydraulic flow path and then connected to the second hydraulic circuit, a fourth hydraulic flow path communicated with the second pressure chamber and connected to the first hydraulic circuit, a fifth hydraulic flow path configured to connect the second hydraulic flow path to the first hydraulic circuit and the fourth hydraulic flow path, ...

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Номер записи: 100