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

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27-08-2011 дата публикации

Воздухораспределитель для автоматически действующих пневматических тормозов

Номер: RU0000107737U1
Автор: Владимир Владимирович Крылов, Зимон Чипёнка, Мартин ХЕЛЛЕР, Михаэль Круше, Сергей Павлович Романов, Тимм Зимон
Принадлежит: КНОРР-БРЕМЗЕ ЗЮСТЕМЕ ФЮР ШИНЕНФАРЦОЙГЕ ГМБХ

1. Воздухораспределитель для автоматически действующих пневматических тормозов для создания давления в тормозном цилиндре по меньшей мере в одном подключенном тормозном цилиндре (4) в зависимости от разницы в давлении между давлением в подключенной основной воздушной магистрали (L) поезда и сохраненным эталонным давлением (А), состоящий из главной части (1), магистральной части (2) и опоры (3), с каналом (KZE) для дополнительного выпуска воздуха от магистральной части через опору к главной части, при этом главная часть (1) содержит следующие детали: ! - управляющий поршень (7) с поршневым штоком (16), на который, с одной стороны, воздействует эталонное давление (А), а с другой стороны, - управляющее давление (S) и по меньшей мере одна нажимная пружина (13), а также ! - уравнительный поршень (8), на который воздействует давление (С) тормозного цилиндра (4), противодействующее по меньшей мере одной нажимной пружине (20), и ! - двухседельный клапан (10), в котором в результате приближения управляющего поршня (7) за счет поршневого штока (16) открывается впускной клапан (103), а за счет его удаления - выпускной клапан (101), при этом впускной клапан (103) находится на пути перемещения воздуха из запасного воздушного резервуара (5) по направлению к тормозному цилиндру (4), а выпускной клапан (101) - на пути перемещения воздуха от тормозного цилиндра (4) к окружающей среде (О), ! отличающийся тем, что ! главная часть (1) содержит клапан (11), состоящий из корпуса (111) клапана, нажимной пружины (112) и седла (113) клапана, при этом на корпусе (111) клапана и седле (113) клапана противоположно расположены камеры давления, которые связаны с каналом (KZE) для дополнительного выпуска во� РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 107 737 (13) U1 (51) МПК B60T 15/18 B60T 13/26 (2006.01) (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ, ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (12) ТИТУЛЬНЫЙ ЛИСТ ОПИСАНИЯ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (21)(22) Заявка: 2011105319/11, 15.02.2011 (24) Дата ...

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Номер записи: 1
10-06-2015 дата публикации

Система для сохранения разрежения

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

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

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Номер записи: 2
12-01-2012 дата публикации

Control device and control method for four-wheel drive vehicle

Номер: US20120010798A1
Автор: Kohei Ito
Принадлежит: Toyota Motor Corp

In a control for a four-wheel drive vehicle that is able to travel in a non-differential mode in which differential rotation between front wheels and rear wheels is limited, it is determined whether a drive train is placed in a twisted state where a twisting torque resulting from a twist accumulated in the drive train is larger than or equal to a predetermined torque while the vehicle is cornering in the non-differential mode, and braking force is applied to the front wheels by a wheel brake device when it is determined that the drive train is placed in the twisted state.

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Номер записи: 3
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: 4
26-01-2012 дата публикации

Brake system and method

Номер: US20120022757A1
Автор: Chang-Jung Lee, Chih-Ping Lo, Hou-Hsien Lee
Принадлежит: Hon Hai Precision Industry Co Ltd

A brake system and method includes adjusting an electronic apparatus on a bracket of a bicycle to be in a horizontal state. If the bicycle is downsloped and a gradient value of the electronic apparatus exceeds or equals a predetermined gradient value, a brake operation of the bicycle is detected. If the brake operation is improper, a brake command is sent to a brake device of the brake system, and brake cables of a front wheel and/or a rear wheel of the bicycle are controlled by the brake device according to the brake command.

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Номер записи: 5
16-02-2012 дата публикации

Traction Control Device

Номер: US20120041651A1
Автор: Kazuhiro Hatake, Koji Uematsu, Yuya Kusumoto
Принадлежит: KOMATSU LTD

The invention provides a traction control device capable of ensuring a sufficient acceleration and course traceability during the turning of a vehicle irrespective of the type of driving system or a road surface condition. A traction control device of the invention includes: a control-start determiner that determines whether or not to control a braking mechanism; and a traction force estimating section that estimates a traction force between each of wheels and the road surface. The traction force estimating section includes: a control condition determining section that determines a control condition of the braking mechanism based on a result of the determination of the control-start determiner; a traction force initial value setting section that sets an initial value in accordance with a result of the determination of the control condition determining section; and a traction force modifying section that modifies the traction force based on a control deviation.

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Номер записи: 6
26-04-2012 дата публикации

Method for operating at least one sensor of a vehicle and vehicle having at least one sensor

Номер: US20120101681A1
Автор: Nikolas Wagner
Принадлежит: GM GLOBAL TECHNOLOGY OPERATIONS LLC

A method is provided for operating a sensor of a vehicle. The sensor is configured to detect objects within a detection range and the method includes, but is not limited to detecting an object with the sensor. In addition, a position of the object is determined with data from the sensor. Furthermore, position data emitted by the object is received with a receiving apparatus of the vehicle and the position of the object is determined with the position data. Moreover, the position determined with the sensor is compared with the position of the object and comparative data is determined and an automatic adjustment of the sensor and/or output of a message inside the vehicle is made depending on the comparative data.

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Номер записи: 7
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: 8
26-07-2012 дата публикации

Methods and systems for improved detection of minispare tires

Номер: US20120191299A1
Автор: Nachiket D. Patil
Принадлежит: ROBERT BOSCH GMBH

A method of detecting a minispare tire in a vehicle having a vehicle control system. The method includes detecting a rotational velocity of each of a plurality of wheels of the vehicle; determining whether a minispare tire is mounted on the vehicle based on the rotational velocities detected at each of the plurality of wheels; adjusting the vehicle control system if a minispare tire is mounted on the vehicle; sensing a hydraulic pressure of a braking system of the vehicle; and suspending determination of whether a minispare tire is mounted on the vehicle if the hydraulic pressure exceeds a predetermined critical pressure level.

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Номер записи: 9
02-08-2012 дата публикации

Control method and apparatus for a vehicle

Номер: US20120197506A1
Автор: Paul Beever, Timothy Reynolds
Принадлежит: Individual

In an aspect of the invention there is provided a control method for a vehicle travelling on a surface, the vehicle having a vehicle powertrain for generating and delivering power to the vehicle wheels, the method including: measuring one or more parameters associated with motion of the vehicle on the surface; comparing the or each of the measured parameters with a predetermined threshold for said measured parameter that is indicative of a level at which wheel slip of the vehicle may occur; and in circumstances in which one or more of the measured parameters exceeds the predetermined threshold, controlling the torque applied by the powertrain to the vehicle wheels to prevent wheel slip.

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Номер записи: 10
02-08-2012 дата публикации

System and method for adjusting braking pressure

Номер: US20120197507A1
Автор: Charles E. Ross, Robert J. Custer, Srikiran Kosanam, William P. Amato
Принадлежит: BENDIX COMMERCIAL VEHICLE SYSTEMS LLC

A vehicle control system includes a forward vehicle sensor transmitting a forward vehicle message based on a distance to a forward vehicle. An adaptive cruise controller receives the forward vehicle message and receives at least one additional message indicating a respective status of the vehicle, the adaptive cruise controller sets a braking pressure for an adaptive cruise controller braking event above a default braking pressure if the adaptive cruise controller determines, based on the at least one of the additional messages, that the vehicle will maintain stability during the adaptive cruise controller braking event.

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Номер записи: 11
09-08-2012 дата публикации

Driver Assistance System for a Vehicle, in Particular Commercial Vehicle, and Method for Controlling a Brake System

Номер: US20120203438A1
Автор: Karsten Breuer, Thomas Dieckmann, Wallbaum Torsten
Принадлежит: Individual

The invention relates to a driver assistance system for a vehicle, in particular commercial vehicle, wherein the driver assistance system ( 14 ) has: a detection system which has at least one sensor ( 15 - 1, 15 - 2, 15 - 3 ) for issuing measuring signals (S 5 - 1 , S 5 - 2 , S 5 - 3 ), a control unit ( 16 ) for receiving the measuring signals (S 5 - 1 , S 5 - 2 , S 5 - 3 ) and for determining the probability of a critical situation or critical state of the vehicle ( 1 ), wherein, when a critical state or sufficient probability of a critical state is identified, the control unit ( 16 ) of the driver assistance system ( 14 ) outputs a signal (S 6 ) for priming a brake system ( 4 ) to a brake control device ( 6 ) of the brake system ( 4 ) of the vehicle ( 1 ), and wherein the control unit ( 16 ) outputs an external brake request signal (S 6 ) for initiating braking operations to the brake control device ( 6 ) of the brake system ( 4 ). According to the invention, in order to prime the brake system ( 4 ), the control unit ( 16 ) outputs an external brake request signal (S 6 ) which has a desired acceleration value signal (S 6 - 3 ) with a higher desired acceleration value (a-des) than a current actual acceleration value (a-act).

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Номер записи: 12
16-08-2012 дата публикации

Vehicle brake control device and method

Номер: US20120209491A1
Автор: Shunsaku Ono
Принадлежит: Bosch Corp

A brake control method. During ABS control, a control sequence, other than the conventional control sequence, based on the slip ratio and so forth resulting from the measurement value of a wheel speed sensor, and a minimum amount of pressure increase or a minimum amount of pressure decrease is ensured. In another embodiment, a control sequence independent from a control sequence based on the measurement value of a wheel speed sensor, sets allowable ranges relating to amounts of change in the pressure of a wheel cylinder, monitors the actual pressure value with a pressure sensor at the time of brake control, and, at a time when the pressure inside the wheel cylinder has deviated from these allowable ranges, drives an actuator such as an electromagnetic valve and controls in such a way that the pressure inside the wheel cylinder falls within an allowable range.

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Номер записи: 13
23-08-2012 дата публикации

System and Method for Responding to Driver Behavior

Номер: US20120212353A1
Автор: Kin Fung, Timothy J. Dick
Принадлежит: Honda Motor Co Ltd

Methods of assessing driver behavior include monitoring vehicle systems and driver monitoring systems to accommodate for a driver's slow reaction time, attention lapse and/or alertness. When it is determined that a driver is drowsy, for example, the response system may modify the operation of one or more vehicle systems. The systems that may be modified include: visual devices, audio devices, tactile devices, antilock brake systems, automatic brake prefill systems, brake assist systems, auto cruise control systems, electronic stability control systems, collision warning systems, lane keep assist systems, blind spot indicator systems, electronic pretensioning systems and climate control systems.

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Номер записи: 14
11-10-2012 дата публикации

System and method for aircraft braking system usage monitoring

Номер: US20120259500A1
Автор: Garrett H. DeVlieg
Принадлежит: Hydro Aire Inc

The system and method for monitoring wear of one or more aircraft parts, such as an aircraft brake, an aircraft tire, a standby system, and landing gear, utilize one or more sensors to sense a parameter of usage, and an estimate of usage of the part can be determined based upon the signal indicating the sensed value of the parameter of usage of the aircraft part. A plurality of sensors can be provided for sensing usage of a plurality of parts of the aircraft, and the estimate of usage of the part can be stored for access of the estimate by ground personnel.

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Номер записи: 15
11-10-2012 дата публикации

Method for operating a vehicle and vehicle

Номер: US20120259523A1
Автор: Christian Haag, Markus Beisswenger, Oliver Dehren
Принадлежит: ROBERT BOSCH GMBH

In a method for operating a vehicle which has a first axle, a second axle, a unit for determining slipping of at least one wheel of the second axle on a ground surface, and a braking device associated with the wheel, a drive torque is applied to the first axle and the second axle via a central differential, and, in the event of slipping of the wheel, a braking torque required to prevent the slipping being determined. A setpoint braking torque is set on the braking device, which is less than the required braking torque, and the part of the drive torque supplied to the first axle is increased.

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Номер записи: 16
18-10-2012 дата публикации

Vehicle systems control for improving stability

Номер: US20120265402A1
Автор: II James W. Post, William Monsma, Xiaodi Kang
Принадлежит: Honda Motor Co Ltd

Improved methods of controlling the stability of a vehicle are provided via the cooperative operation of vehicle stability control systems such as an Active Yaw Control system, Antilock Braking System, and Traction Control System. These methods use recognition of road surface information including the road friction coefficient (mu), wheel slippage, and yaw deviations. The methods then modify the settings of the active damping system and/or the distribution of drive torque, as necessary, to increase/reduce damping in the suspension and shift torque application at the wheels, thus preventing a significant shift of load in the vehicle and/or improving vehicle drivability and comfort. The adjustments of the active damping system or torque distribution temporarily override any characteristics that were pre-selected by the driver.

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Номер записи: 17
18-10-2012 дата публикации

Vehicle braking system and control method thereof

Номер: US20120265419A1
Автор: Sang Mook Kim
Принадлежит: Mando Corp

Disclosed herein is a vehicle braking system and control method. The vehicle braking control method includes detecting velocities of respective wheels provided at a vehicle, calculating a vehicle velocity based on the velocities of the respective wheels, calculating slip amounts of the respective wheels by comparing the vehicle velocity and the velocities of the respective wheels, calculating change rates of the slip amounts of the respective wheels, obtaining regenerative braking force corresponding to one of the slip amounts and the slip change rates of the respective wheels, and controlling regenerative braking using the obtained regenerative braking force.

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Номер записи: 18
01-11-2012 дата публикации

Method and device of calculating aircraft braking friction and other relating landing performance parameters based on the data received from aircraft's on board flight data management system

Номер: US20120277937A1
Автор: Zoltán Iván Radó
Принадлежит: Aviation Safety Technologies LLC

This invention relates to a method and apparatus for the calculation of aircraft braking friction and other relating landing parameters, including but not limited to aircraft braking action, aircraft takeoff distance, aircraft landing distance, runway surface conditions and runway surface friction based on the data collected by and available in the aircraft Flight Data Recorder (FDR) or other flight data management system, for example, the Quick Access Recorder (QAR), to provide all involved personnel in the ground operations of an airport and airline operations, including but not limited to aircraft pilots, airline operation officers and airline managers as well as airport operators, managers and maintenance crews, with the most accurate and most recent information on the true aircraft landing performance parameters to help better and more accurate safety and economical decision making.

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Номер записи: 19
08-11-2012 дата публикации

Load Sensor for a Vehicle Electronic Stability System

Номер: US20120283918A1
Автор: Mario Dagenais
Принадлежит: BOMBARDIER RECREATIONAL PRODUCTS INC

A vehicle comprising a seat defining a driver seat portion and a passenger seat portion, an electronic stability system, adapted to receive inputs from a load sensor, a wheel rotation sensor and a lateral acceleration sensor, the electronic stability system adapted to provide outputs to at least one of the brake system for braking the vehicle, and the engine control unit to change the power output transmitted to the wheels by the engine, the electronic stability system using a first calibration to determine the outputs when the load sensor is in a non-loaded state and a second calibration to determine the outputs when the load sensor is in a loaded state.

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Номер записи: 20
22-11-2012 дата публикации

Method for controlling the deceleration on the ground of a vehicle

Номер: US20120296498A1
Автор: Malika Essadouni, Xavier Dal Santo
Принадлежит: AIRBUS OPERATIONS SAS

The invention relates to a method for controlling the deceleration on the ground of a vehicle. The method obtains, from the crew of the vehicle or from an outside operator, parameters relating to its current position and its current speed. Then it determines a reference position and speed of the vehicle, the reference position being a theoretical position to be reached by the vehicle. Finally it determines, from indicated parameters and from reference parameters, a deceleration command with a view to ending up at a target position at a preselected speed.

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Номер записи: 21
22-11-2012 дата публикации

System and Method of Conducting Vehicle Usage Data Analysis

Номер: US20120296514A1
Автор: Krishnaswamy Venkatesh Prasad, Matthew John Zaluzec, Raja Shekar Sohmshetty, Zhiyong Cedric Xia
Принадлежит: Ford Motor Co

A method of conducting vehicle usage data analysis is provided. The method includes providing usage data about at least one vehicle to a database. The usage data may be analyzed and compared to a member of a set of vehicle development models to determine whether to update a vehicle development model. The usage data may also be analyzed to determine whether to transmit a communication to a vehicle.

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Номер записи: 22
29-11-2012 дата публикации

Controlling Wheel Hop in a Vehicle Axle

Номер: US20120303236A1
Автор: Brian J. Andonian, David A. Robertson, Gary M. Pietrzyk, Jacob M. Povirk, Jihong Guo, Patrick Meloche
Принадлежит: FORD GLOBAL TECHNOLOGIES LLC

A method for controlling wheel hop at a vehicle axle includes determining that one of a difference between average front and rear wheel speeds exceeds a reference difference, a frequency of a signal produced by an accelerometer mounted on the axle exceeds a reference frequency, and a frequency of a lock ring torque exceeds a second reference frequency; pulsing pressure in the wheel brakes of the axle; and reducing engine torque.

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Номер записи: 23
20-12-2012 дата публикации

Motion Control Unit for Vehicle Based on Jerk Information

Номер: US20120323445A1
Автор: Makoto Yamakado, Masato Abe, Shinya Imura
Принадлежит: HITACHI LTD

In a motion control system for a vehicle including control means for controlling a yaw moment of the vehicle; first detection means for detecting a longitudinal velocity (V) of the vehicle; second detection means for detecting a lateral jerk (Gy_dot) of the vehicle; and third detection means for detecting a yaw angular acceleration (r_dot) of the vehicle, the yaw moment of the vehicle is controlled by the control means so that a difference between the yaw angular acceleration (r_dot) detected by the third detection means and a value (Gy_dot/V) obtained by the lateral jerk (Gy_dot) of the vehicle detected by the second detection means by the longitudinal velocity (V) detected by the first detection means becomes small.

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Номер записи: 24
20-12-2012 дата публикации

Vehicle state calculating device and vehicle control device

Номер: US20120323460A1
Автор: Ryosuke Okubo
Принадлежит: Toyota Motor Corp

An actual slip ratio of a wheel is estimated from a slip ratio speed of a wheel calculated according to a running state of a vehicle based on relationship between a slip ratio of the wheel of the vehicle and the slip ratio speed of the wheel set in advance. Typically, the actual slip ratio is estimated supposing that the slip ratio of the wheel calculated according to the running state of the vehicle, when a change rate of the slip ratio speed becomes larger than a predetermined value set in advance, is a reference slip ratio determined in advance according to the relationship between the slip ratio and the slip ratio speed set in advance. Therefore, it is possible to improve control accuracy when controlling a state of the vehicle by decreasing an effect of operation by a driver and a road surface, for example.

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Номер записи: 25
27-12-2012 дата публикации

Reducing The Steering Torque During Braking Maneuvers

Номер: US20120330525A1
Автор: Achim Schoen, Robert Kornhaas
Принадлежит: ROBERT BOSCH GMBH

A method for reducing the steering torque in a motor vehicle in a driving situation in which the vehicle is being braked and steered at the same time. By shifting the brake force to the rear wheels, the front wheels become easier to steer compared to a standard brake force distribution. The maximum required power of an electric steering assistance system is thus greatly reduced.

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Номер записи: 26
10-01-2013 дата публикации

Brake device for saddled vehicle

Номер: US20130009378A1
Автор: Akira Nagakubo, Kotaro Fujiyama, Satoru Ikami
Принадлежит: Honda Motor Co Ltd

A braking device of a saddle-ride type vehicle that can reduce a load acting on a joint is provided. A joint 200 at a front-wheel brake output side which connects a metal pipe and a flexible brake hose is mounted on a body frame 2 via a mount rubber 260 under a floating state.

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Номер записи: 27
10-01-2013 дата публикации

Systems and methods for monitoring and controlling tractor/trailer vehicle systems

Номер: US20130013149A1
Автор: Alan Lesesky, Bobby Ray Weant
Принадлежит: Power Talk Inc

A status of one or more subsystems positioned on one or more trailers is communicated to a tractor electrically and mechanically connected to the trailer. A spread spectrum data communications signal representing the status of a respective subsystem is superposed on the power bus. The status of the respective subsystem can then be determined from the spread spectrum data communications signal. Preferably, the status of the subsystem is indicated to an operator positioned on the tractor. A command for controlling a subsystem on a trailer can also be communicated from the tractor to the trailer over the power bus. A spread spectrum data communications signal representing the command is produced on the power bus, and the subsystem is controlled based on the spread spectrum data communications signal. Preferably, the command is received from an operator positioned in the tractor.

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Номер записи: 28
17-01-2013 дата публикации

Brake hydraulic control method and system

Номер: US20130018561A1
Автор: Shunsaku Ono
Принадлежит: Bosch Corp

A brake control method for a hydraulic brake device equipped with an actuator that automatically regulates braking liquid pressure in a wheel cylinder of a vehicle without driver intervention. The method includes: (a) calculating a time period in which holding or decreasing brake hydraulic pressure is continuously performed to the wheel cylinder; and (b) controlling the actuator such that, an increasing pressure and decreasing pressure to the wheel cylinder after the calculated time period has reached a predetermined time, the amount of the pressure increase and the amount of the pressure decrease are the same.

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Номер записи: 29
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: 30
31-01-2013 дата публикации

Process for controlling a start-stop operation of a vehicle having a hybrid drive, and a corresponding vehicle

Номер: US20130025951A1
Автор: Eduard Hilberer
Принадлежит: Knorr Bremse Systeme fuer Nutzfahrzeuge GmbH

A process for controlling a vehicle start-stop operation having a hybrid drive with an internal-combustion engine and an electric motor, a service brake with an ABS and an electric parking brake, includes: determining, monitoring and analyzing performance parameters of the vehicle, the internal-combustion engine, the electric motor, the service brake and the parking brake; automatically releasing the parking brake in the case of a starting prompt because of determined performance parameters; driving the vehicle by the electric motor for the start; starting the engine by the electric motor if the engine is switched off; driving the vehicle by the electric motor and the engine; activating a generator operation of the electric motor in the case of a braking prompt because of determined performance parameters; activating the service brake; and automatically locking the electric parking brake when the vehicle is stopped after a previously definable deceleration time.

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Номер записи: 31
31-01-2013 дата публикации

Control method and control apparatus for four-wheel drive vehicle

Номер: US20130030664A1
Автор: Akiyoshi KAKITA, Hiroto Kawano, Ryohei Shigeta, Tomohiro Nozu, Yasushi Yagi
Принадлежит: JTEKT Corp, Mazda Motor Corp

Discloses is a method of controlling a four-wheel drive vehicle equipped with a torque distribution device capable of changing a torque distribution amount for secondary driven wheels according to an input current to be applied thereto. This method comprises the steps of: applying, to the torque distribution device, a current value corresponding to a target torque distribution amount; and, performing a current changing control for increasing and reducing the input current to the torque distribution device. The step of performing a current changing control includes causing the input current to the torque distribution device to be temporarily increased to a value greater than the current value corresponding to the target torque distribution amount, and then returned to the current value corresponding to the target torque distribution amount, and repeating the temporary increasing of the input current at least at intervals of a predetermined time.

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Номер записи: 32
07-02-2013 дата публикации

Wheel End Condition Detection

Номер: US20130035834A1
Автор: Bryan COUCH, Daniel Edward Olson
Принадлежит: Motor Coach Industries Ltd

An enhanced wheel data processing unit may analyze tire air temperature data from a tire pressure monitoring system (TPMS) and antilock brake system (ABS) wheel speed sensor fault codes from an ABS controller within a vehicle. When the enhanced wheel data processing unit determines that the tire air temperature is above a predetermined threshold for a given tire and that an ABS wheel speed sensor fault code exists for the wheel end corresponding to the same tire, the enhanced wheel data processing unit may initiate a vehicle shutdown or derate procedure. The vehicle shutdown or derate procedure may include instructions to give an operator of the vehicle a warning indicator for a predetermined time period before shutting down or derating the engine power to the vehicle.

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Номер записи: 33
14-03-2013 дата публикации

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

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

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

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Номер записи: 34
14-03-2013 дата публикации

AUTOMATIC BRAKE VERIFICATION SYSTEM

Номер: US20130066532A1
Автор: Brown Timothy Warren, KUMAR Ajith Kuttannair, Young Henry Todd
Принадлежит: GENERAL ELECTRIC COMPANY

A method of testing a braking device in a drivetrain of a vehicle which includes at least one tractive element coupled to a traction motor. The method includes: (a) applying the braking device to a tractive element of the vehicle; (b) using an electronic controller, causing the traction motor to apply a predetermined force to the tractive element; and (c) using the controller, monitoring the tractive element for movement while the force is being applied. A dynamic braking or “retarder” function may also be tested. A system for carrying out the method is provided. 1. A method of testing a braking device in a drivetrain of a vehicle which includes at least one tractive element coupled to an electric traction motor , the method comprising:(a) applying the braking device to the tractive element;(b) using an electronic controller, causing the traction motor to apply a predetermined force to the tractive element; and(c) using the controller, monitoring the tractive element for movement while the force is being applied.2. The method of further comprising:(d) initially setting the predetermined force at a magnitude that will not cause movement of the tractive element when the braking device is applied;(e) increasing the force until movement of the tractive element occurs; and(f) recording the magnitude of the force which causes movement of the tractive element.3. The method of further comprising:(g) after step (f), modulating the force applied to the tractive element so as to drive the tractive element at a substantially constant speed; and(h) recording the force required to drive the tractive element at the substantially constant speed.4. The method of further comprising using the controller to apply the braking device before applying the predetermined force to the tractive element.5. The method of further comprising using the controller to confirm that the braking device is applied before applying the predetermined force to the tractive element.6. The method of wherein ...

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Номер записи: 35
14-03-2013 дата публикации

VEHICLE STOPPING DISTANCE IMPROVEMENTS

Номер: US20130066533A1
Автор: Daniels Rudolf, Moore Ian, Svensson Thomas
Принадлежит: FORD GLOBAL TECHNOLOGIES, LLC

A method for reducing the braking distance for a vehicle having an anti-lock braking mechanism (ABS) and a hydraulic braking system detects a brake pressure requested by the vehicle's driver (P), and calculates the brakes pressure values at which the wheels of the vehicle lock. A maximum brake pressure value of these different brake pressure values is then compared with the driver's requested brake pressure value (P). If the requested brake pressure value is much higher than the maximum brake pressure value, then the actual brake pressure applied at different wheels (P) is set to a level below the requested brake pressure (P), but still higher than the maximum brake pressure value. This reduces the amount of work required to be done by the ABS in pumping the excessive brake fluid out of the braking system of the vehicle, and allows for precise control of ABS mechanism during wheel slip conditions. 1. A method of reducing the braking distance of a vehicle , wherein the vehicle includes a braking system , the braking system having a brake master cylinder coupled to an electronic control unit , and an Anti-lock braking system (ABS) module , the method comprising:determining whether the brake pressure requested by the vehicle's driver exceeds a wheel lock brake pressure at which at least one of the wheels of the vehicle locks up; andactivating the brake master cylinder if the requested brake pressure exceeds the wheel lock brake pressure, to reduce the brake pressure produced by the brake master cylinder to a value lower than the brake pressure requested by the driver.2. A method of claim 1 , further comprising claim 1 , during reduction claim 1 , maintaining the brake pressure produced by the master cylinder to a level higher than the wheel lock brake pressure at which the wheel locks up.3. A method of claim 1 , further comprising claim 1 , using the ABS module to further reduce the brake pressure produced by the master cylinder at the wheel claim 1 , to a value lower ...

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Номер записи: 36
21-03-2013 дата публикации

MODULARLY DESIGNED PRESSURE CONTROL DEVICE OF A FLUID PRESSURE BRAKE SYSTEM OF A VEHICLE

Номер: US20130073165A1
Автор: Brenner Dirk, Mustapha Adnan, ROETHER Friedbert, WIEDER Gerhard
Принадлежит:

A pressure control device of a vehicle, including a pressure controller of a fluid pressure brake system for brake slip-dependent control, including a relay valve having a supply port supplied by a supply pressure, a venting port connected to a pressure sink, a control port and at least two working ports, in which a working port is assigned to at least one brake cylinder and the other working port is assigned to at least one brake cylinder of another wheel, in which each working port of the relay valve is connected to a 2/2-way valve controlled by a control unit and assigned to a respective vehicle side and establishes a connection between the relevant working port and the assigned brake cylinder or blocks the connection, depending on control unit actuation, and in which the control port of the relay valve is connectable to a brake control pressure formed in accordance with the braking input, to a supply pressure of a pressure reservoir or to a pressure sink by a valve system formed by one 3/2-way or two 2/2-way solenoid valves and controlled by the control unit. 115-. (canceled)16. A pressure control device of a vehicle , comprising:a pressure control arrangement of a fluid pressure brake system of the vehicle for providing at least brake slip-dependent control of brake pressures in brake cylinders of each individual wheel of an axle;wherein the pressure control arrangement includes a single relay valve having a supply port that is supplied by a supply pressure, a venting port connected to a pressure sink, a control port and at least two working ports, and wherein one of the working ports is assigned to at least one brake cylinder of a wheel on one vehicle side of the axle and the other of the working ports of the relay valve is assigned to at least one brake cylinder of a wheel on the other vehicle side of the axle,wherein each of the working ports of the relay valve is connected to a 2/2-way valve, which is controlled directly or indirectly by a control unit and ...

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Номер записи: 37
28-03-2013 дата публикации

METHOD FOR OPERATING A BRAKE-SLIP REGULATING MEANS OF A BRAKE SYSTEM OF A VEHICLE

Номер: US20130080014A1
Автор: Mustapha Adnan, WIEDER Gerhard
Принадлежит:

A method and device for operating a brake-slip regulating arrangement of a vehicle brake system in various operating modes, in accordance with driving conditions, including: activating, in an on-road operating mode, the arrangement on at least one rear axle and one front axle, even in the off-road operating mode, the arrangement continues to operate on at least one rear axle of the vehicle until the brake slip on at least one wheel of a front axle is less than or equal to a specified brake-slip limit; if the specified brake-slip limit is exceeded by the brake slip on the at least one wheel of the front axle, putting the arrangement out of operation on the rear axle and is not put into operation again until the brake slip on the at least one wheel of the front axle is again less than or equal to the specified brake-slip limit. 110-. (canceled)11. A method for operating a brake-slip regulating arrangement (ABS) of a brake system of a vehicle in various operating modes , including an on-road operating mode and an off-road operating mode , in accordance with driving conditions , the method comprising:activating, in the on-road operating mode, the brake-slip regulating arrangement on at least one rear axle and one front axle, wherein even in the off-road operating mode, the brake-slip regulating arrangement continues to operate on at least one rear axle of the vehicle until the brake slip on at least one wheel of a front axle is less than or equal to a specified brake-slip limit; andif the specified brake-slip limit is exceeded by the brake slip on the at least one wheel of the front axle, putting the brake-slip regulating arrangement out of operation on the at least one rear axle and is not put into operation again until the brake slip on the at least one wheel of the front axle is again less than or equal to the specified brake-slip limit.12. The method of claim 11 , wherein the brake-slip regulating arrangement is put out of operation on the at least one wheel of the ...

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Номер записи: 38
28-03-2013 дата публикации

Method and Device for Controlling an Electrohydraulic Braking System for Motor Vehicles

Номер: US20130080016A1
Автор: Bohn Jurgen, Roll Georg
Принадлежит: Continental Teve AG & Co. oHG

A method for controlling an electro-hydraulic braking system for motor vehicles, including providing an antilock control function, and a further brake pressure control function which can be activated in a “brake-by-wire” mode. A pressurization device, activated by an electronic control unit can be connected to hydraulically actuated wheel brakes through at least one pressure regulating valve. The pressurization device having a cylinder-piston arrangement with a chamber, the piston of which can be displaced relative to a rest position by an electromechanical actuator. A set pressure value is determined for each wheel brake activating the cylinder-piston arrangement such that a predetermined pre-pressure, which is determined from the set pressure values, is set in the chamber by displacement of the piston. 15099643151111293443. A method for controlling an electro-hydraulic braking system for motor vehicles , comprising providing at least one first closed or open-loop brake pressure control function including an antilock control function , and a second closed or open-loop brake pressure control function , which can be activated in a “brake-by-wire” operating mode , and providing a pressurization device () , which can be activated by means of an electronic control unit and which is or can be connected to hydraulically actuated wheel brakes () and by means of which the wheel brakes () can be hydraulically actuated by way of at least one pressure regulating valve () , wherein the pressurization device is provided in a form having a cylinder-piston arrangement having a hydraulic pressure chamber () , the piston () of which arrangement can be displaced relative to a rest position ( , ) by an electromechanical actuator ( , ) , determining a set pressure value (P) for each wheel brake () , activating the cylinder-piston arrangement ( , ) in such a way that a predetermined pre-pressure (P) , which is determined from the set pressure values (P) , is set in the hydraulic ...

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Номер записи: 39
28-03-2013 дата публикации

Method and Control Circuit for Controlling a Braking System for Motor Vehicles

Номер: US20130080017A1
Автор: Böhm Jürgen
Принадлежит: Continental Teve AG & Co. oHG

A method for controlling a motor vehicle electrohydraulic braking system. The method being activatable in a “brake-by-wire” operating mode, having a pressure supply device (), which can be activated by an electronic control and a regulation unit, can be connected to a hydraulically actuatable wheel brake. Wherein the pressure supply device () is formed by a cylinder-piston assembly (). The piston () can be actuated by an electromechanical actuator (), the control unit carries out the steps of determining a pressure target value (P) for the pressure supply device (), performing a pressure control operation or an actuator position control operation on the pressure supply device () in accordance with the magnitude of the pressure target value (P). 12243454422. A method for controlling an electrohydraulic braking system for motor vehicles , being activatable in a “brake-by-wire” operating mode comprising , providing a pressure supply device () , which can be activated by means of an electronic control and regulation unit , which is connected or can be connected to at least one hydraulically actuatable wheel brake and by means of which the wheel brake can be hydraulically actuated , wherein the pressure supply device () is formed by a cylinder-piston assembly () , the piston () of which can be actuated by an electromechanical actuator () , determining a pressure target value (P) for the pressure supply device () performing a pressure control operation or an actuator position control operation on the pressure supply device () in accordance with the magnitude of the pressure target value (P).230. The method as claimed in claim 1 , further comprising determining a target value for the rotational speed of an electric motor of the actuator () claim 1 , (ω) both during the pressure control operation and during the actuator position control operation.3. The method as claimed in further comprising determining a driver's required pressure target value (P) using at least two ...

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Номер записи: 40
04-04-2013 дата публикации

VEHICLE BRAKE CONTROL SYSTEM

Номер: US20130085650A1
Автор: Ajiro Keigo, Fujiki Noriaki, Nakamura Kensuke
Принадлежит: NISSAN MOTOR CO., LTD.

A vehicle brake control system includes a regenerative braking control component, a frictional braking control component, a calculating component and a controlling component. The regenerative braking control component controls a regenerative braking device to provide a regenerative braking torque. The frictional braking control component controls a frictional braking device to provide a frictional braking torque. The calculating component calculates a regenerative braking torque filter processing value based on a fluctuation frequency of the regenerative braking torque. The controlling component, during a first condition, operates a motorized power assist control device based on the regenerative braking torque filter processing value, instead of the regenerative braking torque, to moderate the frictional braking torque, such that the regenerative braking torque and the moderated frictional braking torque provide a target braking torque based on a braking operation. 1. A vehicle brake control system comprising:a regenerative braking control component configured to control a regenerative braking device to provide a regenerative braking torque;a frictional braking control component configured to control a frictional braking device to provide a frictional braking torque;a calculating component configured to calculate a regenerative braking torque filter processing value based on a fluctuation frequency of the regenerative braking torque; anda controlling component that is configured, during a first condition, to operate a motorized power assist control device based on the regenerative braking torque filter processing value, instead of based on the regenerative braking torque, to moderate the frictional braking torque, such that the regenerative braking torque and the moderated frictional braking torque provide a target braking torque that is based on a braking operation.2. The vehicle brake control system according to claim 1 , further comprisinga detecting component ...

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Номер записи: 41
11-04-2013 дата публикации

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

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

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

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Номер записи: 42
11-04-2013 дата публикации

METHOD AND DEVICE FOR CONTROLLING AN ELECTRICALLY ACTUABLE BRAKE AND AN ELECTRONIC BRAKE SYSTEM

Номер: US20130090827A1
Автор: Stan Marian
Принадлежит: Continental Teve AG & Co. oHG

A method for controlling an electrically actuated brake including determining an actuator clamping force actual value (F), using a force sensor and determining an actuator position actual value (φ) or an actuator speed actual value (n) using a position sensor for activating the actuator by a controller. The controller includes a selection and evaluation device. The selection and evaluation device supplies to the controller input reference value (φ) and a controller input actual value (φ). The controller input variables (φ, φ) are made available by the selection and evaluation device such that the controller can be operated in at least two control modes. The control modes include a force control (M) for adjusting an actuator clamping force reference value (F), or position control (M, M) for adjusting an actuator position reference value (φ, Δφ), or speed control (M) for adjusting an actuator speed reference value (n). 127821134343141342. A method for controlling a brake which can be actuated electrically by means of an actuator () , comprising the steps of , determining an actuator clamping force actual value (F) by means of providing a clamping force sensor () , determining an actuator position actual value (φ) or an actuator speed actual value (n) by means of providing a position sensor () , generating a manipulated variable (U) for activating the actuator () by means of providing a controller device () , the controller device () having a selection and evaluation device () and a controller structure () , the selection and evaluation device () supplying to the controller structure () a controller structure input reference value (φ) and a controller structure input actual value (φ) as controller structure input variables , and the controller structure input variables (φ , φ) being made available by the selection and evaluation device () wherein the controller device () available for operation using the same controller structure () in at least two of control modes ...

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Номер записи: 43
11-04-2013 дата публикации

METHOD FOR STABILIZING A TWO-WHEELED VEHICLE HAVING A LATERALLY SLIPPING REAR WHEEL

Номер: US20130090828A1
Автор: Lemejda Markus
Принадлежит:

In a method for stabilizing a two-wheeled vehicle in driving situations in which the two-wheeled vehicle oversteers, a variable describing the oversteering of the two-wheeled vehicle is ascertained and, if the variable exceeds a predefined threshold value, a control is carried out, a steering torque being applied to the steering of the two-wheeled vehicle and/or the brake pressure which acts on the front wheel brake being reduced or increased and/or the driving torque on the rear wheel being reduced or increased and/or the brake pressure on the rear wheel being increased or reduced. 110-. (canceled)11. A method for stabilizing a two-wheeled vehicle in a driving situation in which an oversteering of the two-wheeled vehicle driven on a roadway is present , the method comprising:ascertaining a variable describing the oversteering of the two-wheeled vehicle as a controlled variable; andperforming, by a controller, an automatic control stabilizing the two-wheeled vehicle in the case the controlled variable exceeds a predefined threshold value.12. The method as recited in claim 11 , wherein the variable describing the oversteering of the two-wheeled vehicle is one of (i) a float angle claim 11 , (ii) a slip angle claim 11 , (iii) a change over time of the float angle claim 11 , or (iv) a change over time of the slip angle.13. The method as recited in claim 12 , wherein the control stabilizing the two-wheeled vehicle includes:at least one of automatically (i) applying a steering torque to a steering mechanism of the two-wheeled vehicle, (ii) modifying a brake pressure acting on a front wheel brake, (iii) modifying a propulsion torque on a rear wheel, and (iv) modifying a brake pressure acting on a rear wheel brake.14. The method as recited in claim 13 , wherein the variable describing the oversteering of the two-wheeled vehicle is determined with the aid of at least one of a longitudinal velocity sensor claim 13 , a transverse acceleration sensor claim 13 , a yaw-rate ...

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Номер записи: 44
18-04-2013 дата публикации

Hybrid vehicles

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

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

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Номер записи: 45
18-04-2013 дата публикации

Electronically controllable brake booster

Номер: US20130096795A1
Автор: Gung Hun SIM
Принадлежит: Mando Corp

Disclosed herein is an electronically controlled brake booster. The electronically controlled brake booster includes a brake pedal sensor to detect a stroke of a brake pedal, a motor to transmit power required to generate a braking pressure, a cylinder pressure sensor to detect an internal pressure of a cylinder generated via the motor, and an electronic control unit to control driving of the motor. The electronic control unit includes a target pressure setting element to set a target pressure using the detected brake pedal stroke information and a proportional-integral controller to perform proportional-integral compensation of an error between the target pressure and the pressure of the cylinder. The electronic control unit further includes a proportional-integral gain adjustor to adjust at least one of a proportional gain and an integral gain of the proportional-integral controller using the cylinder pressure information detected via the cylinder pressure sensor.

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Номер записи: 46
25-04-2013 дата публикации

OPERATING METHOD FOR A MOTOR VEHICLE COMPRISING IN PARTICULAR AN ELECTRONICALLY CONTROLLED PARKING BRAKE SYSTEM

Номер: US20130103277A1
Автор: Attallah Faouzi, Maron Christof, Schneider Heinz-Anton, Stamatoski Oliver
Принадлежит: Continental Teves AG & Co. oHG

An operating method for a motor vehicle including an electronically controlled motor vehicle brake system, having an automated brake release function. A start-up request is determined electronically in an automated manner and subsequently at least one electronic command is transmitted to a parking brake actuating mechanism in order to release the brake, and the electronic unit EPB−ESC−ECU is networked with communication partners, for example, electronic units, sensors and/or data-bus systems in order to exchange signals and/or data with these communication partners, and including an electronic routine for providing software, configuring and/or calibrating the motor vehicle brake system. For improved operation, in a more flexible configuration routine, the routine for providing software, configuring and/or calibrating the motor vehicle brake system is embodied in a multi-level manner, and subsequent to the vehicle being produced the motor vehicle brake system includes at least self-learning properties in terms of an automated configuration routine. 112.-. (canceled)13. An operating method for a motor vehicle comprising electro-mechanical actuators comprising an automated brake release function , wherein a start-up request is determined electronically , in that an electronic unit (EPB−ESC−EPB−ESC−ECU) that is connected to the actuators whilst processing at least one signal from at least one sensor and/or man-machine interface , for example in particular , an angle of inclination sensor , a wheel rotation sensor , a coupling sensor or the like , that is preferably directly connected to the electronic unit (EPB−ESC−EPB−ESC−ECU) , and whilst using stored parameters , data and/or software the start-up request is determined electronically in an automated manner , and subsequently at least one electronic command is transmitted to the electro-mechanical actuators in order to release the brake and wherein the electronic unit (EPB−ESC−ECU) is provided networked to ...

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Номер записи: 47
25-04-2013 дата публикации

Vehicle brake hydraulic pressure control apparatus and road surface friction coefficient estimating device

Номер: US20130103279A1
Автор: Kiyonori Asano
Принадлежит: Nissin Kogyo Co Ltd

One embodiment provides a vehicle brake hydraulic controller including: an antilock braking controlling module configured to perform an antilock braking control in which a brake hydraulic pressure applied to wheel brakes is reduced under the condition that a slip-related amount has reached a pressure reduction threshold value; and a turning judging module configured to judge whether a vehicle is turning based on a steering angle, wherein, when the antilock braking control is performed and in the case that the turning judging module judges that the vehicle is turning, the antilock braking controlling module performs a turning pressure reduction control so as to: change the pressure reduction threshold values to be more easily reached by the slip-related amount than at the time of straight running; and change the pressure reduction amounts to be larger than that at the time of straight running.

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Номер записи: 48
25-04-2013 дата публикации

Method for Determining a Vehicle Reference Speed and Brake System

Номер: US20130103280A1
Автор: Ihrig Hans-Georg, Roll Georg, Wetzel Dirk
Принадлежит: Continental Teve AG & Co.oHG

A method for determining a vehicle reference speed (VREF) in a brake system of amotorized single-track vehicle (), of a type having an anti-lock control system (). The slip control () can be carried out at one wheel (VR) of the motor vehicle depending on the vehicle reference speed (VREF). A sensor () for measuring the wheel speed (v) is arranged on this slip-controllable wheel (VR) and comprises the steps of forming a first wheel speed signal (v) by low-pass filtering of the measured wheel speed (v). Wherein the negative gradient of the first wheel speed signal (v) is limited to a predetermined gradient limit value (Δv/T), and that the first wheel speed signal (v) is used as a wheel-specific vehicle reference speed (VREF, ) for slip control of the wheel (VR). 120120320420234262102110122123142. A method for determining a vehicle reference speed (VREF) in a brake system of a motorized single-track vehicle () , of a type having an anti-lock control system () , wherein slip control () can be carried out at one wheel (VR) of the motor vehicle depending on the vehicle reference speed (VREF) and having a sensor () for measuring wheel speed (v) is arranged on the wheel (VR) , comprising the steps of forming a first wheel speed signal (v) by low-pass filtering of the measured wheel speed (v) , wherein the negative gradient of the first wheel speed signal (v) is limited to a predetermined gradient limit value (Δv/T) , and that the first wheel speed signal (v) is used as a wheel-specific vehicle reference speed (VREF , , , , , , , , ) for slip control of the wheel (VR).21406010010812014014334262102110122123142. The method as claimed in further comprising in that a second wheel speed signal ( claim 1 , claim 1 , claim 1 , claim 1 , claim 1 , claim 1 , claim 1 , ) is formed claim 1 , which is compared with the first wheel speed signal (v claim 1 , VREF claim 1 , claim 1 , claim 1 , claim 1 , claim 1 , claim 1 , claim 1 , claim 1 , ) in order to establish a determined ...

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Номер записи: 49
16-05-2013 дата публикации

Method for Controlling an Electrohydraulic Braking System and Electrohydraulic Braking System

Номер: US20130119752A1
Автор: Böhm Jürgen, Jager Jens, Roll Georg
Принадлежит: Continental Teve AG & Co. oHG

A method and system for controlling an electrohydraulic braking system for a motor vehicle having an antilock braking control function and an electrically controllable pressure generating device having a cylinder-piston arrangement having a hydraulic pressure chamber and a piston displaceable by an electromechanical actuator so that a predetermined pressure can be set in the chamber, and having a number of hydraulically wheel brakes connected to the hydraulic pressure chamber by an electrically actuatable inlet valve and to a pressure medium reservoir by means of an electrically actuatable outlet valve. The cylinder-piston arrangement is actuated in case of antilock controlling at all wheel brake for setting an individual wheel target pressure at each wheel brake, such that the pressure in the hydraulic pressure chamber is set to the greatest wheel target pressure. 1. A method for controlling an electrohydraulic braking system for motor vehicles of the type having an antilock braking control function (ABS) and an electrically controllable pressure generating device in the form of a cylinder-piston arrangement having at least one hydraulic pressure chamber , and a piston which can be being displaced by means of an electromechanical actuator , so that a predetermined pressure (P) can be set in the hydraulic pressure chamber , and having a plurality of hydraulically actuatable wheel brakes , in which each of the wheel brakes are connected by means of an electrically actuatable inlet valve to the hydraulic pressure chamber and by means of an electrically actuatable outlet valve to a pressure medium storage container , comprising the steps of in the case of the wheel brakes being subjected to an antilock braking control operation , controlling the cylinder-piston arrangement for setting an individual wheel desired pressure (P) for each wheel brake in such a that the pressure (P) in the hydraulic pressure chamber is set to the highest wheel desired pressure (P) of the ...

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Номер записи: 50
16-05-2013 дата публикации

HYDRAULIC BRAKING SYSTEM CONTROL IN AUTOMOTIVE VEHICLES

Номер: US20130124060A1
Автор: Moore Ian, Svensson Thomas
Принадлежит: FORD GLOBAL TECHNOLOGIES, LLC

A hydraulic braking system for a vehicle incorporating a vehicle dynamics control system (VDCS) includes an electromechanically actuated brake master cylinder that hydraulic braking system detects a reduction in the brake pressure of the wheel brake device, caused due to intervention of the VDCS in the braking operation, and moves a piston of the brake master cylinder in a direction opposite to an actuating direction. This causes an additional flow of the brake fluid from a reservoir to one or more pressure chambers of the brake master cylinder, thus, avoiding the piston from reaching a stop condition, and hence, avoiding an inadequacy in the volume of the brake fluid available in the pressure chambers of the brake master cylinder. 1. A method for controlling a hydraulic braking system of a vehicle , incorporating a vehicle dynamics control system (VDCS) , the braking system comprising an electromechanically actuated brake master cylinder fluidly communicating with a wheel brake device of the vehicle , the wheel brake device being configured to be actuated by the vehicle dynamics control system , the method comprising:detecting a reduction in the brake pressure in the wheel brake device, andmoving a piston of the brake master cylinder opposite to an actuating direction, to allow an additional flow of a brake fluid from a reservoir to one or more pressure chambers of the brake master cylinder.2. The method of claim 1 , further comprising claim 1 , during a reoccurrence of reduction in the brake pressure in the wheel brake device claim 1 , moving the piston of the brake master cylinder again claim 1 , during each reoccurrence claim 1 , to facilitate successive additional flows of the brake fluid in the one or more pressure chambers of the brake master cylinder.3. The method of claim 1 , further comprising:detecting at least one of a travel distance of the piston of the electromechanically actuated brake master cylinder, and an adjustment angle of an actuating ...

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Номер записи: 51
23-05-2013 дата публикации

Road wheel disturbance detection

Номер: US20130131916A1
Автор: Anthony J. Champagne, Michael K. Hales
Принадлежит: Nexteer Beijing Technology Co Ltd

control method for a vehicle is provided. The control method includes estimating a magnitude of wheel disturbance based on wheel velocity, and generating a disturbance status signal based on the magnitude of wheel disturbance.

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Номер записи: 52
30-05-2013 дата публикации

Method for operating a brake system of a vehicle

Номер: US20130133988A1
Автор: Ian Moore, Rudolf Daniels, Thomas Svensson
Принадлежит: FORD GLOBAL TECHNOLOGIES LLC

A method for operating a brake system of a vehicle is described. The vehicle includes a service brake having a brake master cylinder and a plurality of wheels each having a respective brake device. Upon attainment of a given measurement value, in particular in the context of a stability control procedure, a brake pressure is built up by means of the brake master cylinder at the brake devices of all wheels.

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Номер записи: 53
30-05-2013 дата публикации

CONTROL DEVICE FOR A BRAKING SYSTEM OF A VEHICLE, BRAKING SYSTEM FOR A VEHICLE, AND METHOD FOR OPERATING A BRAKING SYSTEM OF A VEHICLE

Номер: US20130134771A1
Автор: Binder Christian, Foitzik Bertram, Heil Edward, Kuhlman Ryan
Принадлежит:

A control device for a braking system of a vehicle is provided, having a first receiving device which receives a provided brake activation intensity variable, a plunger control device which determines a setpoint fill level variable of a plunger, taking into account at least the received brake activation intensity variable, and a corresponding plunger control signal is outputtable so that a ratio of an actual volume and a maximum fillable volume of a storage volume of the plunger is settable corresponding to the determined setpoint fill level variable. For a brake activation intensity variable corresponding to a predefined non-activation intensity variable, the plunger control device determines a fill level variable different from an empty state as the setpoint fill level variable, and outputs a plunger control signal corresponding to the determined setpoint fill level variable to the plunger such that the plunger is at least partially filled. 1. A control device for a braking system of a vehicle , comprising:a first receiving device, with which a provided brake activation intensity variable concerning an activation intensity of an activation of a brake activation element situated on the braking system is receivable; anda plunger control device, with which a setpoint fill level variable of a plunger is determinable, taking into account at least the received brake activation intensity variable, and a plunger control signal corresponding to the determined setpoint fill level variable is outputtable to the plunger, so that a ratio of an actual volume of liquid that is filled into a storage volume of the plunger and a maximum volume that is fillable into the storage volume is settable corresponding to the determined setpoint fill level variable;wherein for a brake activation intensity variable corresponding to a predefined non-activation intensity variable, the plunger control device is designed to determine a fill level variable which differs from an empty state of the ...

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Номер записи: 54
30-05-2013 дата публикации

Brake Control Apparatus

Номер: US20130138316A1
Автор: Kotaro Koyama
Принадлежит: HITACHI AUTOMOTIVE SYSTEMS LTD

A brake control apparatus includes a parking-brake mechanism configured to apply braking force to left and right wheels of one of front and rear of a vehicle by a switching operation of a driver; a braking-force generating section configured to apply braking force independently to the wheels in accordance with a state of the vehicle; a moving-state judging section configured to judge whether or not the vehicle is moving; and a braking-force control unit configured to control the braking-force generating section. The braking-force control unit includes a braking-force cooperative control section configured to restrict an actuation of the parking-brake mechanism and to cause the braking-force generating section to generate braking force in a case that the parking-brake mechanism is required to be actuated by the switching operation when the moving-state judging section determines that the vehicle is moving.

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Номер записи: 55
06-06-2013 дата публикации

METHOD FOR OPERATING A HYDRAULIC BRAKING SYSTEM OF A VEHICLE AND CONTROL UNIT FOR A HYDRAULIC BRAKING SYSTEM OF A VEHICLE

Номер: US20130140879A1
Автор: Kneip Frank
Принадлежит:

A method and control unit for operating a hydraulic braking system of a vehicle, including: receiving an input, provided by an on board control system, with regard to a setpoint pressure change in at least one wheel brake cylinder of the hydraulic braking system which is connected to a brake master cylinder via at least one brake circuit; displacing at least one sealing element into a sealing position with regard to at least one connecting channel of the brake master cylinder to a brake medium reservoir of the hydraulic braking system; establishing a setpoint conveying variable for at least one brake medium conveying element of the hydraulic braking system for conveying a brake medium volume between at least one storage volume of the hydraulic braking system and a storage-external volume of the at least one brake circuit, taking into consideration the received input; and activating the at least one brake medium conveying element according to the established setpoint conveying variable. 112-. (canceled)13. A method for operating a hydraulic braking system of a vehicle , comprising:receiving an input provided by an on board control system with regard to a setpoint pressure change in at least one wheel brake cylinder of the hydraulic braking system connected to a brake master cylinder via at least one brake circuit;displacing at least one sealing element into a sealing position with regard to at least one connecting channel of the brake master cylinder to a brake medium reservoir of the hydraulic braking system as a function of the input;establishing a setpoint conveying variable for at least one brake medium conveying element of the hydraulic braking system for conveying a brake medium volume between at least one storage volume of the hydraulic braking system and a storage-external volume of the at least one brake circuit taking into consideration the received input; andactivating at least one brake medium conveying element according to the established setpoint ...

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Номер записи: 56
06-06-2013 дата публикации

BRAKING FORCE DISTRIBUTION CONTROL DEVICE FOR A VEHICLE

Номер: US20130144500A1
Автор: Watanabe Yoshinori
Принадлежит:

Disclosed is a braking force distribution control device for a vehicle which has a braking apparatus capable of individually controlling braking forces of the wheels as required. Front or rear wheels having higher braking force sharing rate being referred to control reference wheels and the front or rear wheels having lower braking force sharing rate are referred to control object wheels. A difference value between braking slip index values of the left and right wheels of said control object wheels is referred to a reference difference value. A braking force distribution control is executed on the control object wheels so that the magnitude relationship in wheel speeds of the left and right wheels of the control object wheels is converse to that of the left and right wheels of the control reference wheels. 1. A braking force distribution control device for a vehicle having a braking apparatus capable of individually controlling braking forces of wheels , wherein with front or rear wheels having higher braking force sharing rate being referred to control reference wheels and the front or rear wheels having lower braking force sharing rate being referred to control object wheels; and a difference value between braking slip index values of the left and right wheels of said control reference wheels being referred to a reference difference value , a braking force distribution control is executed on said control object wheels so that the magnitude relationship in braking slip index values of the left and right wheels of said control object wheels is converse to that of the left and right wheels of said control reference wheels.2. A braking force distribution control device for a vehicle according to claim 1 , wherein a target difference value between braking slip index values of the left and right wheels of said control object wheels is calculated on the basis of said reference difference value claim 1 , and the braking force distribution control is executed on said ...

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Номер записи: 57
20-06-2013 дата публикации

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

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

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

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Номер записи: 58
20-06-2013 дата публикации

ELECTRIC VEHICLE BRAKE CONTROL DEVICE

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

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

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Номер записи: 59
20-06-2013 дата публикации

Motor vehicle combination and method for operating

Номер: US20130158740A1
Автор: Marten Wittorf, Peter Kahler
Принадлежит: GM GLOBAL TECHNOLOGY OPERATIONS LLC

A motor vehicle combination is provided. The motor vehicle combination includes a towing vehicle. The towing vehicle is embodied as passenger car. In addition, the motor vehicle combination includes at least one trailer. The at least one trailer can be mechanically connected to the towing vehicle. In addition, the motor vehicle combination comprises a bidirectional communication unit, which is designed for exchanging data between the towing vehicle and the at least one trailer.

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Номер записи: 60
27-06-2013 дата публикации

VEHICLE BRAKE FLUID PRESSURE CONTROLLER

Номер: US20130166167A1
Автор: Sekiya Tomoaki
Принадлежит: NISSIN KOGYO CO., LTD.

Embodiments disclose a vehicle brake fluid pressure controller. The controller includes: a normally-open proportional solenoid valve provided in a hydraulic passage extending from a hydraulic pressure source to a wheel brake; a normally-closed solenoid valve provided in a hydraulic passage extending from the wheel brake to the hydraulic pressure source; an antilock brake control module configured to perform an antilock brake control for suppressing the locking of a wheel by performing a pressure increase control, a pressure decrease control and a pressure holding control for a hydraulic pressure of the wheel brake, using the normally-open proportional solenoid valve and the normally-closed solenoid valve. 1. A vehicle brake fluid pressure controller comprising:a normally-open proportional solenoid valve provided in a hydraulic passage extending from a hydraulic pressure source to a wheel brake;a normally-closed solenoid valve provided in a hydraulic passage extending from the wheel brake to the hydraulic pressure source;an antilock brake control module configured to perform an antilock brake control for suppressing the locking of a wheel by performing a pressure increase control, a pressure decrease control and a pressure holding control for a hydraulic pressure of the wheel brake, using the normally-open proportional solenoid valve and the normally-closed solenoid valve; anda sudden braking judging module configured to judge whether a sudden braking is performed, fully closes the normally-open proportional solenoid valve for the front wheel brake during when the hydraulic pressure is being increased due to the sudden braking;', 'then performs the holding control for a first predetermined time; and', 'then performs the pressure increase control at a predetermined inclination by applying a current to the normally-open proportional solenoid valve until the pressure decrease control is started., 'wherein, in the case that the sudden braking judging module judges that ...

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Номер записи: 61
04-07-2013 дата публикации

Master cylinder device

Номер: US20130167716A1
Автор: Akira Sakai, Hiroshi Ueno, Kazuya Maki, Kiyoyuki Uchida, Masaaki Uechi, Satoshi Ishida, Tatsuo Sugitani
Принадлежит: Advics Co Ltd, Toyota Motor Corp

A master cylinder device including: a housing whose front side is closed and which has a separation wall for separating the inside of the housing into a front side chamber and a rear side chamber; a pressurizing piston disposed in the front side chamber so as to define a pressurizing chamber for pressurizing the brake fluid and an input chamber into which a brake fluid from a high pressure source is introduced; an input piston disposed in the rear side chamber and moving forward by an operation force; and a transmission rod which is through the separation wall, whose proximal end portion is fixed in one of the pressurizing and input pistons, and whose distal end portion is apart from the other of the pressurizing and input pistons in a state of no forward movement.

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Номер записи: 62
04-07-2013 дата публикации

BRAKING FORCE CONTROL APPARATUS FOR VEHICLE

Номер: US20130173127A1
Автор: Kurata Fumito, Nakatsu Masatoshi
Принадлежит: TOYOTA JIDOSHA KABUSHIKI KAISHA

A braking force control apparatus for a vehicle estimates the friction coefficient μ of a road surface as the state of the road surface on which the vehicle travels, and determines an ideal braking force μW by making use of the estimated road surface friction coefficient μ. When μ is equal to or greater than a predetermined friction coefficient μ, the braking force control apparatus operates an in-wheel motor in a regeneration state to generate a motor braking torque Tmr, and causes a friction brake mechanism to generate a frictional braking force Bf computed by subtracting Tmr from μW. When μ is less than μ, the braking force control apparatus operates the in-wheel motor in a power running state to generate a motor driving torque Tmc, and causes the friction brake mechanism to generate a Bf computed by adding Tmc to μW. 1. A braking force control apparatus for a vehicle which comprises an electrical force generation mechanism which applies electromagnetic driving force or electromagnetic braking force to a wheel of the vehicle; a braking force generation mechanism which applies mechanical braking force at least to the wheel which is rotated by the electromagnetic driving force generated by the electrical force generation mechanism; brake operation means which is operated by a driver in order to brake the vehicle; braking control means for controlling , in accordance with the operation of the brake operation means , the electromagnetic braking force or the electromagnetic driving force generated by the electrical force generation mechanism and the mechanical braking force generated by the braking force generation mechanism such that a braking force is applied to the wheel , the braking force control apparatus being characterized in that the braking control means comprises:road surface state detection means for detecting the state of a road surface on which the vehicle travels;lock tendency determination means for determining whether or not the wheel tends to lock on ...

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Номер записи: 63
04-07-2013 дата публикации

METHOD FOR OPERATING A BRAKE-BOOSTED HYDRAULIC BRAKE SYSTEM OF A VEHICLE AND CONTROL DEVICE FOR A BRAKE-BOOSTED HYDRAULIC BRAKE SYSTEM OF A VEHICLE

Номер: US20130173130A1
Автор: Kneip Frank, Vollert Herbert
Принадлежит:

A method and control device for operating a brake-boosted hydraulic brake system of a vehicle, including ascertaining information relating to an increase or a decrease in an additional braking force exerted on at least one wheel in addition to a hydraulic braking force of the brake system, which increase or decrease is greater than a predefined minimum difference, altering an assistance force to a force introduction element, by a force difference, taking account of the ascertained information, so that the hydraulic braking force is altered to correspond to the increase or decrease in the additional braking force, and displacing a volume of a brake medium of the brake system between at least one accumulator chamber of at least one plunger and/or of at least one two-chamber cylinder and a volume of the brake system outside the accumulator. 111-. (canceled)12. A method for operating a brake-boosted hydraulic brake system of a vehicle , comprising:ascertaining information relating to an increase or a decrease in at least one additional braking force exerted on at least one wheel of the vehicle in addition to a hydraulic braking force of the brake system;altering an assistance force provided by a brake booster by a force difference, taking account of the ascertained information, in such a way that the hydraulic braking force is altered in a manner corresponding to the increase or decrease in the additional braking force; anddisplacing a volume of a brake medium of the brake system between at least one chamber of an accumulator and a volume of the brake system outside the accumulator taking account of the ascertained information, in such a way that a compensating force corresponding to the force difference is exerted on a brake input element of the brake booster, the accumulator chamber including at least one of: i) at least one plunger, and ii) at least one two-chamber cylinder.13. The method as recited in claim 12 , wherein the information ascertained is information ...

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Номер записи: 64
04-07-2013 дата публикации

BRAKING FORCE CONTROL APPARATUS FOR A VEHICLE

Номер: US20130173132A1
Автор: Nanami Takeshi, Okita Toshinori, Sato Osamu, Yuasa Hitoshi
Принадлежит: TOYOTA JIDOSHA KABUSHIKI KAISHA

In a braking force control apparatus which controls a braking force applied to a vehicle based on a relation thereof with an obstacle ahead of the vehicle, irrespective of a braking operation of a driver, a lateral force is predicted which can be generated in cases where avoidance steering is carried out by the driver, in order to avoid an obstacle which has been detected, and an actual braking force actually applied to a longitudinal direction of the vehicle is limited in accordance with a braking force which can be applied in the longitudinal direction of the vehicle and which is calculated based on the lateral force thus predicted. According to this, in the braking force control apparatus which controls the braking force of the vehicle, the lateral force for avoiding a collision with the obstacle by means of steering is obtained. 1. A braking force control apparatus for a vehicle which controls a braking force applied to the vehicle based on a relation thereof with an obstacle ahead of the vehicle , irrespective of a braking operation of a driver , said braking force control apparatus comprising:an obstacle detection part that detects the obstacle located ahead of said vehicle;a lateral force prediction part that predicts a lateral force which can be generated in cases where avoidance steering is carried out by the driver, in order to avoid the obstacle detected by said obstacle detection part; anda braking force control part that limits an actual braking force actually applied to the vehicle in a longitudinal direction thereof, in accordance with a braking force in the longitudinal direction of the vehicle which is calculated based on a friction of the vehicle with respect to a road surface on which said vehicle is running, and the lateral force predicted by said lateral force prediction part.2. The braking force control apparatus for a vehicle as set forth in claim 1 , whereinsaid lateral force prediction part predicts a change over time of the lateral force ...

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Номер записи: 65
04-07-2013 дата публикации

BRAKING CONTROL DEVICE FOR VEHICLE AND BRAKING CONTROL METHOD FOR VEHICLE

Номер: US20130173134A1
Автор: Takeya Yusuke, Terasaka Masato
Принадлежит: ADVICS CO., LTD.

A vehicle braking control device includes first and second deceleration calculation units, an assist control unit, and a termination determination unit. The first deceleration calculation unit calculates a first estimated vehicle body deceleration using a wheel speed sensor detection signal. The second deceleration calculation unit calculates a second estimated vehicle body deceleration using a vehicle body acceleration sensor detection signal. The assist control unit initiates assist control, which assists increasing a braking force when the first estimated vehicle body deceleration exceeds a first deceleration determination value and the second estimated vehicle body deceleration exceeds a second deceleration determination value. The termination determination unit determines whether or not a termination condition of the assist control is satisfied based on at least one of the first and the second estimated vehicle body decelerations. The assist control unit terminates the assist control when it is determined that the termination condition is satisfied. 1. A braking control device for a vehicle comprising:a first deceleration calculation unit that calculates a first estimated vehicle body deceleration by using a detection signal of a wheel speed sensor arranged on the vehicle;a second deceleration calculation unit that calculates a second estimated vehicle body deceleration by using a detection signal of a vehicle body acceleration sensor arranged on the vehicle;an assist control unit that initiates an assist control, which assists increasing of a braking force applied to a wheel of the vehicle if a brake pedal of the vehicle is operated, when the first estimated vehicle body deceleration exceeds a first deceleration determination value and the second estimated vehicle body deceleration exceeds a second deceleration determination value during operation of the brake pedal of the vehicle; anda termination determination unit that determines whether or not a ...

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Номер записи: 66
11-07-2013 дата публикации

HYDRAULIC BOOSTER AND HYDRAULIC BRAKE SYSTEM USING THE SAME

Номер: US20130175851A1
Автор: Honda Tetsuya, Miyata Yoshihiro, NOHIRA Shigemitsu, Yamamoto Hideki
Принадлежит: ADVICS CO., LTD

A hydraulic brake system is proposed which includes a hydraulic booster for boosting brake operation, and a circulation type pressure control unit. The hydraulic brake system further includes a hydraulic booster including an auxiliary hydraulic pressure source, a pressure regulator for adjusting the hydraulic pressure supplied therefrom to a value corresponding to an operating amount of a brake operating member and introducing the thus adjusted hydraulic pressure into a boost chamber, and a boost piston for actuating a master piston with a force boosted by an assisting force generated by the hydraulic pressure introduced into the boost chamber. The hydraulic booster further includes a hydraulic line bypassing the pressure regulator and extending from the boost chamber to the auxiliary hydraulic pressure, and a check valve provided in the hydraulic line and configured to allow only a discharge of hydraulic pressure from the boost chamber into the auxiliary hydraulic pressure source. 1. A hydraulic booster for use in a hydraulic brake system , comprising an auxiliary hydraulic pressure source including a power pump and a pressure accumulator , a pressure regulator including a spool valve and configured to adjust hydraulic pressure supplied from the auxiliary hydraulic pressure source to a value corresponding to an operating amount of a brake operating member by displacement of the spool valve and to introduce the thus adjusted hydraulic pressure into a boost chamber , and a boost piston for producing an assisting force under the hydraulic pressure introduced into the boost chamber , thereby actuating a master piston of a master cylinder with the assisting force ,wherein the hydraulic booster further comprises at least one hydraulic line which bypasses the pressure regulator and through which one of the boost chamber and a pressure chamber of the master cylinder is connected to one of the auxiliary hydraulic pressure source and an atmospheric pressure reservoir, and at ...

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Номер записи: 67
11-07-2013 дата публикации

VEHICLE TRAVEL CONTROL APPARATUS

Номер: US20130179004A1
Автор: NIHEI Toshihisa, Nonaka Takashi
Принадлежит:

A vehicle travel control apparatus executes turning facilitation control that controls wheel longitudinal force such that the longitudinal force of a turning path inner side wheel becomes smaller than the longitudinal force of a turning path outer side wheel, and vehicle dynamics control that controls wheel longitudinal force so as to stabilize the turning motion of the vehicle. The vehicle speed range in which to permit the turning facilitation control is lower than the vehicle speed range in which to permit the vehicle dynamics control. 1. A vehicle travel control apparatus comprising:a controller that executes a turning facilitation control that controls wheel longitudinal force such that a longitudinal force of a turning path inner side wheel becomes smaller than a longitudinal force of a turning path outer side wheel, and a vehicle dynamics control that controls wheel longitudinal force so as to stabilize turning motion of the vehicle, wherein,a vehicle speed range in which to permit the turning facilitation control is lower than a vehicle speed range in which to permit the vehicle dynamics control.2. The vehicle travel control apparatus according to claim 1 , wherein the vehicle dynamics control includes an oversteer reduction control claim 1 , and an upper limit value of the vehicle speed range in which to permit the turning facilitation control is lower than a lower limit value of a vehicle speed range in which to permit the oversteer reduction control.3. The vehicle travel control apparatus according to claim 1 , wherein:the vehicle dynamics control includes an oversteer reduction control,an upper limit value of the vehicle speed range in which to permit the turning facilitation control is higher than a lower limit value of a vehicle speed range in which to permit the oversteer reduction control, andan lower limit value of the vehicle speed range in which to permit the turning facilitation control is lower than a lower limit value of a vehicle speed range ...

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Номер записи: 68
18-07-2013 дата публикации

VEHICLE BRAKE HYDRAULIC PRESSURE CONTROL APPARATUS

Номер: US20130184955A1
Автор: HIROSE Tomonori, Kobayashi Masashi
Принадлежит: NISSIN KOGYO CO., LTD.

A vehicle brake hydraulic pressure control apparatus includes a hydraulic pressure adjusting unit, a split road determining section, a differential pressure control section, and a hydraulic pressure adjusting and driving section. The hydraulic pressure adjusting unit individually adjusts brake fluid pressures acting on wheel brakes for wheels. The split road determining section determines whether road surfaces which the wheels are in contact with constitute a split road. In a state where the split road determining section determines during execution of antilock braking control that the road surfaces constitute the split road, the differential pressure control section determines command pressures for the wheel brakes so that differential pressures between the brake fluid pressures of the right and left wheel brakes are equal to or less than a permissible differential pressure. The hydraulic pressure adjusting and driving section controls the hydraulic pressure adjusting unit based on the determined command pressures. 1. A vehicle brake hydraulic pressure control apparatus comprising:a hydraulic pressure adjusting unit that individually adjusts brake fluid pressures acting on wheel brakes for right and left front wheels and right and left rear wheels;a split road determining section that determines as to whether or not road surfaces which the right wheels and the left wheels are in contact with constitute a split road in which coefficients of friction of the road surfaces are different from each other;a differential pressure control section that, in a state where the split road determining section determines during execution of antilock braking control that the road surfaces constitute the split road, determines command pressures for the right and left wheel brakes so that differential pressures between the brake fluid pressures of the right and left wheel brakes are equal to or less than a permissible differential pressure; anda hydraulic pressure adjusting and ...

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Номер записи: 69
18-07-2013 дата публикации

VEHICLE BRAKE HYDRAULIC PRESSURE CONTROL APPARATUS

Номер: US20130184956A1
Автор: HIROSE Tomonori
Принадлежит: NISSIN KOGYO CO., LTD.

A wheel deceleration calculating sections individually calculate, as negative values, wheel decelerations of front and rear wheels. If, at a time when the antilock braking control for at least one of the right and left front wheels is started or at a time when the antilock braking control for at least one of the right and left rear wheels is started, (i) a maximum value of the wheel decelerations calculated by the wheel deceleration calculating sections is equal to or larger than a first predetermined value and (ii) a difference between the wheel decelerations of the right and left front wheels or the right and left rear wheels which are in an antilock braking control state is equal to or larger than a second predetermined value, a split road determining section determines that road surfaces constitute a split road. 1a hydraulic pressure adjusting unit that individually adjusts brake fluid pressures acting on wheel brakes for right and left front wheels and right and left rear wheels;a wheel deceleration calculating section that individually calculates, as negative values, wheel decelerations of the front and rear wheels;a split road determining section that determines as to whether or not road surfaces which the right wheels and the left wheels are in contact with constitute a split road in which coefficients of friction of the road surfaces are different from each other, whereinin a state where the split road determining section determines during execution of antilock braking control that the road surfaces constitute the split road, the hydraulic pressure adjusting unit is controlled so that differential pressures between the brake fluid pressures of the right and left wheel brakes are equal to or less than a permissible differential pressure, (i) a maximum value of the wheel decelerations of the front and rear wheels calculated by the wheel deceleration calculating section is equal to or larger than a first predetermined value and', '(ii) a difference between the ...

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Номер записи: 70
18-07-2013 дата публикации

METHOD FOR CONTROLLING A BRAKE SYSTEM OF A VEHICLE WITH AN ELECTRONICALLY RGULATED REAR-AXLE BRAKE CIRCUIT AND AN PNEUMATICALLY CONTROLLED FRONT-AXLE BRAKE CIRCUIT

Номер: US20130184957A1
Автор: FRANK Peter, Hecker Falk, HERGES Michael
Принадлежит:

A method for controlling a brake system, which has pressure medium-activated wheel brakes and is at least partially electronic, and which is in a vehicle that includes at least two axles, including generating brake pressures for the wheel brakes on an axle in a pressure-controlled manner, and electronically regulating the brake pressures for the pressure medium-actuated wheel brakes on at least one further axle in terms of a brake pressure regulation for adjusting an actual brake pressure to a desired brake pressure. A related braking system device is also described. 118-. (canceled)19. A method for controlling a brake system , which has pressure medium-activated wheel brakes and is at least partially electronic , and which is in a vehicle that includes at least two axles , the method comprising:generating brake pressures for the wheel brakes on an axle in a pressure-controlled manner; andelectronically regulating the brake pressures for the pressure medium-actuated wheel brakes on at least one further axle in terms of a brake pressure regulation for adjusting an actual brake pressure to a desired brake pressure.20. The method of claim 19 , wherein the brake pressures for the wheel brakes on one axle are regulated in dependence upon the brake slip of the wheels of this axle.21. The method of claim 19 , wherein electric signals are generated that represent the brake pressures for the wheel brakes on one axle or that represent the braking effect on the wheels of one axle.22. The method of claim 21 , wherein the brake pressures for the wheel brakes on the at least one further axle are brake-pressure regulated at least in response to the electric signals that represent the brake pressures for the wheel brakes on one axle or that represent the braking effect on the wheels on one axle.23. The method of claim 19 , wherein control or back-up pressures for the wheel brakes on the at least one further axle are generated claim 19 , from which in the event of a failure of the ...

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Номер записи: 71
25-07-2013 дата публикации

Traction Control Apparatus

Номер: US20130190992A1
Автор: Hatake Kazuhiro, Uematsu Koji
Принадлежит: KOMATSU LTD.

An object of the invention is to provide a traction control apparatus capable of suitably controlling an error, if it occurs, between an estimation of a vehicle speed and an actual vehicle speed. A traction control apparatus according to the invention includes a vehicle speed estimator and a driving-force controller. The traction control apparatus includes a vehicle state determiner that determines whether the vehicle speed of the construction vehicle estimated by the vehicle speed estimator and the driving-force control by the driving-force controller are balanced, and a driving-force control changer that changes a driving-force control by the driving-force controller when the vehicle state determiner determines the vehicle speed and the driving-force control to be unbalanced. 1. A traction control apparatus , comprising:a vehicle speed estimator that estimates a vehicle speed of a construction vehicle, the vehicle speed estimator comprising a rotation speed detector that detects a rotation speed of each of driving wheels of a construction vehicle and a reference wheel-speed calculator that calculates a reference wheel-speed based on the rotation speed detected by the rotation speed detector;a driving-force controller that performs a driving-force control of the construction vehicle based on the vehicle speed estimated by the vehicle speed estimator;a vehicle state determiner that determines whether or not the vehicle speed of the construction vehicle estimated by the vehicle speed estimator and the driving-force control by the driving-force controller are balanced; anda driving-force control changer that changes a driving-force control by the driving-force controller when the vehicle state determiner determines that the vehicle speed and the driving-force control are unbalanced.2. The traction control apparatus according to claim 1 , the driving-force controller comprising a braking mechanism controller that controls a braking mechanism of the construction vehicle ...

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Номер записи: 72
25-07-2013 дата публикации

Traction Control Apparatus

Номер: US20130190993A1
Автор: Hatake Kazuhiro, Uematsu Koji
Принадлежит: KOMATSU LTD.

An object of the invention is to provide a traction control apparatus capable of suitably controlling an error, if it occurs, between an estimation of a vehicle speed and an actual vehicle speed. A traction control apparatus according to the invention includes a vehicle speed estimator and a driving-force controller. The traction control apparatus includes a vehicle state determiner that determines whether the vehicle speed of the construction vehicle estimated by the vehicle speed estimator and the driving-force control by the driving-force controller are balanced, and a driving-force control changer that changes a driving-force control by the driving-force controller when the vehicle state determiner determines the vehicle speed and the driving-force control to be unbalanced. 1. A traction control apparatus for an all-wheel drive construction vehicle , comprising:a vehicle speed estimator that estimates a vehicle speed, the vehicle speed estimator comprising a rotation speed detector that detects a rotation speed of each of wheels and a reference wheel-speed calculator that calculates a reference wheel-speed based on the rotation speed detected by the rotation speed detector;a driving-force controller that performs a driving-force control of the construction vehicle based on the vehicle speed estimated by the vehicle speed estimator, the driving-force controller comprising a braking mechanism controller that calculates a slip ratio of each of the wheels and controls a brake mechanism of the construction vehicle so that the calculated slip ratio converges to a predetermined target value;a vehicle state determiner that determines whether or not the vehicle speed of the construction vehicle estimated by the vehicle speed estimator and the driving-force control by the driving-force controller are balanced based on the slip ratio calculated by the braking mechanism controller; anda driving-force control changer that changes a driving-force control by the driving-force ...

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Номер записи: 73
01-08-2013 дата публикации

SENSOR CONFIGURATION FOR A MATERIALS HANDLING VEHICLE

Номер: US20130197760A1
Автор: Castaneda Anthony T., Dues Jeffry D., Green Matthew M., Manci Lewis H., Schloemer James F., Schumacher Mark E., Siefring Vernon W., Wellman Timothy A., Wershing Jesse
Принадлежит:

A materials handling vehicle includes a power unit, a load handling assembly, at least one first obstacle detector, and at least one second obstacle detector. The at least one first obstacle detector is mounted at a first location on the power unit to detect an object located along a path of travel of the power unit beyond a non-detect zone of the at least one first obstacle detector. The at least one second obstacle detector is mounted at a second location on the power unit, spaced from the first location in a first direction, and is capable of detecting an object in the non-detect zone of the at least one first obstacle detector. 1. A materials handling vehicle comprising:a power unit;a load handling assembly;at least one first obstacle detector mounted at a first location on said power unit to detect an object located along a path of travel of said power unit beyond a non-detect zone of said at least one first obstacle detector; andat least one second obstacle detector mounted at a second location on said power unit, spaced from said first location in a first direction, and capable of detecting an object in said non-detect zone of said at least one first obstacle detector.2. The materials handling vehicle of claim 1 , wherein said at least one first obstacle detector is located at a front portion of said power unit.3. The materials handling vehicle of claim 2 , wherein said at least one second obstacle detector is spaced away from said at least one first obstacle detector in a direction towards said load handling assembly.4. The materials handling vehicle of claim 1 , wherein said at least one first obstacle detector comprises a sweeping laser sensor.5. The materials handling vehicle of claim 4 , wherein said sweeping laser sensor is capable of detecting an object in any of first claim 4 , second claim 4 , and third zones claim 4 , the first and third zones comprising steer bumper zones used for implementing steer correction maneuvers and the second zone ...

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Номер записи: 74
01-08-2013 дата публикации

Brake control apparatus

Номер: US20130197771A1
Автор: Hiroki Takeda, Tohma Yamaguchi
Принадлежит: HITACHI AUTOMOTIVE SYSTEMS LTD

In a brake control apparatus for generating a brake hydraulic pressure using an electric motor, in order to restrain changes in vehicle deceleration with respect to an operation amount of a brake pedal when a hydraulic pressure sensor is abnormal, a controller ( 6 ) sets a target hydraulic pressure of a master cylinder ( 2 ) based on the operation amount of a brake pedal ( 11 ) detected by a stroke sensor ( 36 ), and controls an action of an electric motor ( 14 ) so that a master cylinder hydraulic pressure detected by a hydraulic pressure sensor ( 10 ) attains the target hydraulic pressure. On this occasion, a brake characteristic representing a relationship between a motor rotation position detected by a resolver ( 37 ) and the master cylinder hydraulic pressure as detected by the hydraulic pressure sensor ( 10 ) is stored and updated. When the hydraulic pressure sensor ( 10 ) is abnormal, a target motor rotation position corresponding to the target hydraulic pressure is set using the updated brake characteristic, and the action of the electric motor ( 14 ) is controlled. The electric motor ( 14 ) is controlled based on the updated brake characteristic, and hence fluctuations in the vehicle deceleration with respect to the brake operation can be suppressed and a sense of discomfort for the driver can be alleviated.

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Номер записи: 75
08-08-2013 дата публикации

BRAKING FORCE CONTROL APPARATUS AND BRAKING FORCE CONTROL METHOD FOR VEHICLE

Номер: US20130204503A1
Автор: Watanabe Yoshinori
Принадлежит: TOYOTA JIDOSHA KABUSHIKI KAISHA

A vehicle braking force control apparatus includes a controller that performs a front-rear braking force distribution control in which the braking forces applied to the left and right rear wheels are controlled individually so that a wheel speed of each of the rear wheels is equal to a target wheel speed of the rear wheel, which is set based on a predetermined relationship between the wheel speed of the front wheel and the target rear wheel speed of the rear wheel, and that corrects the target wheel speed of at least one of the left and right rear wheels, based on a parameter related to a change rate of load shift amount in a vehicle transverse direction, so that the target wheel speed of the rear wheel on a ground contact load increase side is less than the target wheel speed of the rear wheel on a ground contact load decrease side. 1. A vehicle braking force control apparatus comprising a controllerthat performs a front-rear braking force distribution control that distributes a braking force to front wheels and rear wheels, wherein in the front-rear braking force distribution control, the braking forces applied to the left and right rear wheels are controlled individually so that a wheel speed of each of the rear wheels is equal to a target wheel speed of the rear wheel, which is set based on a predetermined relationship between the wheel speed of the front wheel and the target wheel speed of the rear wheel, andthat corrects the target wheel speed of each of the left and right rear wheels, based on a parameter that is related to a change rate of amount of load shift in a vehicle transverse direction, such that the target wheel speed of the rear wheel on a ground contact load increase side is less than the target wheel speed of the rear wheel on a ground contact load decrease side, whereinthe controller corrects the target wheel speed of each of the left and right rear wheels so that a magnitude of a correction amount for correcting the target wheel speed of the ...

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Номер записи: 76
08-08-2013 дата публикации

TRACTION AID FUNCTION FOR VEHICLES HAVING MULTIPLE DRIVEN AXLES

Номер: US20130204504A1
Автор: Bieniek Lars, Dieterich Frank, SCHMIDT Michael Frank
Принадлежит:

A method for transferring the drive torque from the wheels having a low traction to the wheels having a higher traction, the method being configured for vehicles in which not all driven wheels are equipped with a rotational speed sensor. In order to be able to perform a starting aid function, it is provided to measure the rotational speed of the cardan shaft and to put it in relation to the wheel rotational speed of at least one wheel which has a rotational speed sensor. If the deviation between the cardan shaft rotational speed and the measured wheel rotational speed is too high, at least one of the wheels, which does not have a rotational speed sensor, is braked automatically so that the vehicle is able to start. 16-. (canceled)7. A method for transferring a drive torque from wheels having a low traction to wheels having a higher traction for a vehicle having multiple driven axles , in which several but not all driven wheels are equipped with a rotational speed sensor , the method comprising:measuring a rotational speed of a cardan shaft and putting it in relation to a wheel rotational speed of at least one wheel having a rotational speed sensor; andautomatically braking, if the deviation between the cardan shaft rotational speed and the wheel rotational speed is too high, at least one wheel that does not have a rotational speed sensor.8. The method of claim 7 , wherein a wheel without a rotational speed sensor is braked automatically claim 7 , if a measured wheel rotational speed approximately equals zero and the cardan shaft rotational speed is unequal to zero.9. The method of claim 7 , wherein a wheel without a rotational speed sensor is braked automatically claim 7 , if a measured wheel rotational speed is unequal to zero but the cardan shaft rotational speed deviates excessively from the wheel rotational speed.10. The method of claim 7 , wherein in the case of a vehicle which has at least two rear axles and in which the wheels of one rear axle do not have ...

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Номер записи: 77
15-08-2013 дата публикации

Hydraulic Assembly for a Vehicle Brake System

Номер: US20130207452A1
Автор: Boris Koeth, Leo Gilles
Принадлежит: LUCAS AUTOMOTIVE GMBH

A hydraulic assembly for a vehicle brake system comprising at least two brake circuits and wheel brakes associated with the brake circuits. The hydraulic assembly comprises a pressure generator for generating a central hydraulic pressure for the brake circuits independently of the driver at least in the case of service braking initiated by the driver. Furthermore, at least one pressure adjusting device is provided for adjusting for each individual brake circuit the central hydraulic pressure that is generated by the pressure generator independently of the driver.

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Номер записи: 78
15-08-2013 дата публикации

TECHNIQUE FOR OPERATING A BRAKE SYSTEM IN A M-SPLIT SITUATION

Номер: US20130207453A1
Автор: Knechtges Josef
Принадлежит: LUCAS AUTOMOTIVE GMBH

Proposed is a technique for operating a hydraulic motor vehicle brake system in an operating situation which requires the formation of a hydraulic pressure difference at opposite wheel brakes of a vehicle axle. Here, each wheel brake is assigned a first slip regulating valve device for decoupling the respective wheel brake from a hydraulic pressure generator, and a second slip regulating valve device for dissipating hydraulic pressure at the respective wheel brake. A method implementation of this technique comprises the steps of building up a hydraulic pressure at the opposite wheel brakes during the course of a braking process, detecting a requirement for forming a hydraulic pressure difference at the opposite wheel brakes, actuating one or more of the slip regulating valve devices assigned to the opposite wheel brakes so as to form the hydraulic pressure difference by virtue of different hydraulic pressures being set at the opposite wheel brakes, and, in reaction to a driver demand, increasing the hydraulic pressure at the opposite wheel brakes, including the wheel brake at which a relatively low hydraulic pressure is to be set, while maintaining the hydraulic pressure difference by transferring hydraulic fluid from the hydraulic pressure generator via the first slip regulating valve devices to the opposite wheel brakes. 1. A method for operating a hydraulic motor-vehicle brake system in a braking situation that requires the creation of a hydraulic-pressure difference at opposite wheel brakes of a vehicle axle , wherein a first slip-regulating valve device for a decoupling of the respective wheel brake from a hydraulic-pressure generator and a second slip-regulating valve device for a reduction of hydraulic pressure at the respective wheel brake have been assigned to each wheel brake , comprising the following steps:building up a hydraulic pressure at the opposite wheel brakes within the scope of a braking procedure;registering a requirement to create a hydraulic- ...

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Номер записи: 79
15-08-2013 дата публикации

Vehicle Motion Control Apparatus, and Vehicle Motion Control Method

Номер: US20130211644A1
Автор: OHSAWA Toshiya, Yokoyama Atsushi
Принадлежит: Hitachi Automotive Systems, Ltd.

A vehicle motion control apparatus that the travel stability of a vehicle can be maintained by appropriately controlling the regenerative braking force in accordance with the wheel slip state or the road surface friction coefficient, and that the amount of regeneration of regenerative energy by the electric motor can be ensured under various situations which may range from gradual braking to rapid braking is provided. A braking/driving force allocation unit of the vehicle motion control apparatus allocates braking/driving force to a front wheel and a rear wheel on the basis of braking/driving force required for the vehicle and decreases the braking/driving force for one of the front wheel and the rear wheel for which the braking/driving force is generated by the electric motor in response to a decrease in the ratio of braking/driving force to a slip ratio of at least one of the front wheel and the rear wheel. 1. A vehicle motion control apparatus for controlling the motion of a vehicle provided with a brake apparatus configured to generate braking force in at least one of a front wheel and a rear wheel; a drive source configured to generate driving force in at least one of the front wheel and the rear wheel; and an electric motor configured to generate regenerative braking force and electric driving force in the front wheel or the rear wheel ,the vehicle motion control apparatus comprising:a braking/driving force allocation unit configured to allocate braking/driving force to the front wheel and the rear wheel on the basis of braking/driving force required for the vehicle,wherein the braking/driving force allocation unit decreases the braking/driving force for one of the front wheel and the rear wheel for which the braking/driving force is generated by the electric motor in response to a decrease in the ratio of braking/driving force to a slip ratio of at least one of the front wheel and the rear wheel.2. The vehicle motion control apparatus according to claim 1 , ...

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Номер записи: 80
15-08-2013 дата публикации

METHOD, REGULATING AND CONTROL APPLIANCE, AND PARKING BRAKE COMPRISING SUCH A REGULATING AND CONTROL APPLIANCE, FOR ADJUSTING A CLAMPING FORCE EXERTED BY A PARKING BRAKE

Номер: US20130211684A1
Автор: Baehrle-Miller Frank, Putzer Tobias
Принадлежит:

In a method for adjusting the clamping force exerted by a parking brake, which force is applied by an electric-motor braking apparatus that encompasses an electric braking motor and power-supply and control units, and as necessary by an additional braking apparatus, an equivalent resistance is ascertained from a measurement of current and voltage and is used as the basis for calculating the maximum generatable clamping force. 112-. (canceled)13. A method for adjusting a clamping force exerted by a parking brake , which force is applied by an electric-motor braking apparatus that encompasses an electric braking motor , power-supply , control units , and an additional braking apparatus , the method comprising:ascertaining a total resistance in the electric-motor braking apparatus from a sum of equivalent motor resistance and an equivalent control device resistance, the equivalent control device resistance referring to a resistance in the power-supply and control units of the braking motor, and being ascertained from parameters of the electric-motor braking apparatus; andusing the total resistance as a basis for at least one of ascertaining a maximum generatable clamping force, and ascertaining a motor current required for a target clamping force, an additional braking force being applied by the additional braking apparatus for a case in which the maximum generatable clamping force falls below an associated threshold value or the motor current required for the target clamping force exceeds an associated threshold value.14. The method according to claim 13 , wherein the equivalent control device resistance is ascertained from a measurement of current and voltage in the electric-motor braking apparatus.15. The method according to claim 14 , wherein the measurement of current and voltage for ascertaining the equivalent control device resistance is carried out between the braking motor and the power-supply and control units that are electrically connected to the braking ...

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Номер записи: 81
22-08-2013 дата публикации

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

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

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

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Номер записи: 82
22-08-2013 дата публикации

ELECTRIC MOTOR

Номер: US20130218436A1
Автор: Kirby Rupert Paul
Принадлежит: Protean Electric

An electric motor for rotating a wheel of a vehicle, the electric motor having a rotor, a stator and coil windings, a first sensor arranged to output a first signal indicative of a position of the rotor relative to the stator, a second sensor arranged to output a second signal indicative of a position of the rotor relative to the stator; wherein the first sensor and second sensor are offset with respect to each other such that upon rotation of the rotor relative to the stator the first output signal and second output signal allow the direction of the rotor to be determined; wherein the first output signal and second output signal are used for controlling current in the coil windings and at least one of the first output signal and second output signal are provided to a vehicle braking system to allow the vehicle braking system to determine a wheel lock condition or an onset of a wheel lock condition, wherein the onset of a wheel lock condition is determined based on predetermined criteria. 1. An electric motor for rotating a wheel of a vehicle , the electric motor having a rotor , a stator and coil windings , a first sensor arranged to output a first signal indicative of a position of the rotor relative to the stator , wherein the first output signal is used for controlling current in the coil windings and the first output signal is arranged to be provided to a vehicle braking system to allow the vehicle braking system to determine a wheel lock condition or an onset of a wheel lock condition , wherein the onset of a wheel lock condition is determined based on predetermined criteria.2. An electric motor according to claim 1 , further comprising a second sensor arranged to output a second signal indicative of a position of the rotor relative to the stator; wherein the first sensor and second sensor are offset with respect to each other such that upon rotation of the rotor relative to the stator the first output signal and second output signal allow the direction of the ...

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Номер записи: 83
29-08-2013 дата публикации

ELECTRO-HYDRAULIC DYNAMIC BRAKING SYSTEM AND CONTROL METHOD

Номер: US20130221737A1
Автор: Cagnac Bastien, Garnier Remy, RICHARD Philippe
Принадлежит: ROBERT BOSCH GMBH

The system includes a high-pressure accumulator connected to the primary chamber of the master cylinder and to the inlet of the ESP module by a solenoid valve. The connection between the primary chamber and the brake fluid reservoir is equipped with a solenoid valve. A control circuit controls the solenoid valve of the reservoir and the solenoid valve of the accumulator, depending on the braking method selected or imposed. The dynamic braking phase is broken down into two tasks, one with energy recovery that involves isolating the master cylinder from the wheel brakes until deceleration to a threshold speed, followed by another step until full stop that involves connecting the primary chamber alone to the high-pressure accumulator and to the ESP module to provide the latter with pressurized brake fluid from the accumulator and supply the wheel brakes for mechanical braking. 1. An electro-hydraulic dynamic brake system , comprising:an electric-motor servo-brake to actuate a master cylinder connected to wheel brakes by an ESP module;a high-pressure accumulator connected to a primary chamber of the master cylinder and to an inlet of the ESP module by a solenoid valve;a control circuit to receive brake request signals from the servo-brake and the ESP module to control the solenoid valve of the high-pressure accumulator based on a selected mode of braking or an imposed mode of braking; a preparatory braking phase during which the high-pressure accumulator is filled from the primary chamber by actuating the servo-brake when there is no action on the brake or mechanical braking command by the ESP module and by blocking the pressurization of brake fluid that has accumulated in the high-pressure accumulator, and', 'a dynamic braking phase, which is broken down into two operations: (i) a dynamic braking phase, with energy recovery, that involves isolating the master cylinder from the wheel brakes and allowing the servo-brake to respond to action on the brake pedal until ...

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Номер записи: 84
29-08-2013 дата публикации

METHOD FOR ADJUSTING THE CLAMPING FORCE EXERTED BY A PARKING BRAKE, REGULATING AND CONTROL APPLIANCE FOR CARRYING OUT SAID METHOD, AND VEHICLE PARKING BRAKE COMPRISING SUCH A CONTROL APPLIANCE

Номер: US20130226426A1
Автор: Baehrle-Miller Frank, Blattert Dieter
Принадлежит:

In a method for adjusting the clamping force exerted by a parking brake, which force is applied by an electric-motor braking apparatus and a hydraulic braking apparatus, the electric braking motor impinging upon a brake piston of a hydraulic wheel brake unit of the hydraulic braking apparatus, for the case in which the pre-pressure existing in the hydraulic braking apparatus exceeds a threshold pressure value, an inlet valve in the braking circuit of the hydraulic braking apparatus is closed, and the target braking force is established by actuation of the electric-motor braking apparatus. 110-. (canceled)11. A method for adjusting a clamping force exerted by a parking brake , the parking brake comprising an electric-motor braking apparatus that encompasses an electric braking motor , and a hydraulic braking apparatus , the electric braking motor impinging upon a brake piston of a hydraulic wheel brake unit of the hydraulic braking apparatus , the method comprising:for a case in which a pre-pressure existing in the hydraulic braking apparatus exceeds a threshold pressure value, an inlet valve that is disposed in a braking circuit of the hydraulic braking apparatus between a brake cylinder and the wheel brake unit is closed, and a target clamping force is established by actuation of the electric-motor braking apparatus.12. The method according to claim 11 , wherein upon exceedance of the threshold pressure value claim 11 , a switchover valve disposed in the braking circuit claim 11 , said switchover valve being disposed in the braking circuit between the brake cylinder and the inlet valve claim 11 , is closed.13. The method according to claim 11 , wherein upon exceedance of the threshold pressure value claim 11 , firstly the inlet valve is closed and then the electric-motor braking apparatus is adjusted in order to generate an electrical clamping force.14. The method according to claim 11 , wherein below the threshold pressure value claim 11 , first an electrical ...

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Номер записи: 85
29-08-2013 дата публикации

Braking force control device

Номер: US20130226429A1
Автор: Akifumi Doura, Hideyuki Aizawa, Noritaka Yamada, Satoshi Udaka
Принадлежит: Advics Co Ltd, Toyota Motor Corp

A braking force control device can control braking forces of the respective wheels of a vehicle, suppresses an increase of the braking force of a first wheel that is a wheel having a relatively large slip amount in a pair of right/left wheels and increases the braking force of a second wheel that is a wheel having a relatively small slip amount. The braking force control device may suppress the increase of the braking force of the first wheel before the friction coefficient of a road surface to the first wheel reaches a peak and when the friction coefficient is in the vicinity of the peak. It is preferable to suppress the increase of the braking force of the first wheel by holding the braking force of the first wheel.

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Номер записи: 86
05-09-2013 дата публикации

DEVICE FOR ESTIMATING VEHICLE BODY VIBRATION AND CONTROLLER FOR SUPPRESSING VEHICLE BODY VIBRATION USING SAME

Номер: US20130231838A1
Автор: Kobayashi Yosuke, NAKAMURA Tamaki, Nawano Masaaki, Shiozawa Yuuki
Принадлежит: NISSAN MOTOR CO., LTD.

A vehicle body vibration estimating device for estimating a vehicle body vibration as a sprung mass of a vehicle where wheels are suspended via a suspension device. The vehicle body vibration estimating device includes a wheel speed physical quantity detecting section and a vibration estimating section. The wheel speed physical quantity detecting section detects a wheel speed physical quantity related to wheel speed, which is a circumferential velocity of a wheel. The vibration estimating section estimates the vehicle body vibration from a correlation relationship between displacements in a back-and-forth direction and displacements in an up-and-down direction of the wheels with respect to the vehicle body, and the wheel speed physical quantity detected by the wheel speed physical quantity detecting section. 2. The vehicle body vibration estimating device as recited in claim 1 , whereinthe wheel speed physical quantity detecting section detects a front wheel physical quantity related to front wheel speeds which is a wheel speed of front wheels, and a rear wheel speed physical quantity related to rear wheel speeds, which is a wheel speed of rear wheels; andthe vibration estimating section estimates the vibration of the vehicle body based on the front wheel speed physical quantity and the correlation relationship between the displacements of the front wheels in the back-and-forth direction with respect to the vehicle body, as well as the rear wheel speed physical quantity and the correlation relationship between the displacements of the rear wheels in the back-and-forth direction.3. The vehicle body vibration estimating device as recited in claim 1 , whereinthe correlation relationship between the displacements of the wheels in the back-and-forth direction and the displacements in the up-and-down direction with respect to the vehicle body is a geometric constraint determined corresponding to a link structure of the suspension device, with the correlation relationship ...

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Номер записи: 87
12-09-2013 дата публикации

PRESSURE-MEDIUM-ACTIVATED BRAKE DEVICE OF A VEHICLE HAVING CONTROL ROUTINES IMPLEMENTED IN A BRAKE CONTROLLER UNIT, OF A HILL START ASSISTANT FUNCTION OR CREEP SUPPRESSION FUNCTION

Номер: US20130238209A1
Автор: Mustapha Adnan, Schaefers Andreas
Принадлежит:

A pressure-medium-activated brake device of a vehicle without brake pressure control but with brake slip control (ABS) for driver-independent control of the brake slip during a braking process, and traction control (TCS) for driver-independent control of the drive slip during an acceleration process. 18-. (canceled)9. A pressure-medium-activated brake device of a vehicle , without brake pressure control , comprising:a brake slip control (ABS) for driver-independent control of the brake slip during a braking process; anda traction control (TCS) for driver-independent control of the drive slip during an acceleration process;wherein as part of the brake slip control (ABS), there is at least one ABS pressure control valve controlled by the brake controller unit that is connected in pressure lines running between a service brake valve and at least one brake cylinder to increase, maintain and reduce the pressure in the allocated brake cylinder,wherein as part of the traction control, there is at least one TCS valve controlled by the brake controller unit to create a compressed air connection between a pressure medium store and the at least one ABS pressure control valve,wherein at least one of a hill start assistant and a creep suppression function is controlled by control routines, as part of which function the brake pressure generated by the driver during a preceding braking in at least some brake cylinders of the vehicle, on a detected stoppage of the vehicle on a hill or a detected creep of the vehicle, is at least maintained in the at least one brake cylinder without the driver having to activate the brake further, andwherein all control routines of the at least one of the hill start assistant and the creep suppression function are implemented in the brake controller unit, which brake controller unit is configured to implement the at least one of the hill start assistant and the creep suppression function, it controls exclusively the at least one ABS pressure control ...

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Номер записи: 88
19-09-2013 дата публикации

Integrated electronic hydraulic brake system

Номер: US20130241276A1
Автор: I Jin Yang, Seong Ho Choi, Yong Kap Kim
Принадлежит: Individual

Disclosed is an integrated electronic hydraulic brake system including an actuator having a master cylinder and a pedal simulator, an electronic stability control (ESC), and a hydraulic power unit (HPU) which are configured as a single unit. The integrated electronic hydraulic brake system may include an integrated hydraulic control unit and a power source unit, wherein the power source unit is separately provided to isolate the operational noise, and the integrated hydraulic control unit and the power source unit are connected to each other via an external pipe.

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Номер записи: 89
19-09-2013 дата публикации

AUXILIARY BRAKING DEVICE OF VEHICLE

Номер: US20130245906A1
Автор: Shirai Masafumi
Принадлежит: UD TRUCKS CORPORATION

The purpose of the present invention is to provide an auxiliary braking device of a vehicle which obtains braking force corresponding to the amount of pressing of an accelerator pedal even during an operation of the auxiliary braking device and prevents frequent repetition of the acceleration and deceleration, to attain a fuel saving operation. Therefore, in the present invention, a vehicle electronic control unit () and other electronic control units () are provided, the vehicle electronic control unit () and the other electronic control units are connected with each other by an in-vehicle communication system (L), and an auxiliary brake switch position detection device (S) that detects a switch position of an auxiliary brake switch () and an accelerator pedal pressing amount measurement device (S) that measures the amount of pressing of the accelerator pedal () are provided. 1. An auxiliary braking device of a vehicle , comprising:a vehicle electronic control unit and other electronic control units, in which the vehicle electronic control unit and the other electronic control units are connected by an in-vehicle communication system, an auxiliary brake switch position detection device for detecting a switch position of an auxiliary brake switch and an accelerator pedal pressing amount measurement device for measuring an amount of pressing of an accelerator pedal are provided,the vehicle electronic control unit is provided with a storage device storing characteristics of the amount of pressing the accelerator pedal and the auxiliary braking force;the vehicle electronic control unit has a function for determining the auxiliary braking force corresponding to the amount of pressing the accelerator pedal in correspondence with the characteristics stored in said storage device, if the accelerator pedal is pressed when an auxiliary braking device is operated by the auxiliary brake switch, anda function for transmitting the determined auxiliary braking force to the other ...

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Номер записи: 90
19-09-2013 дата публикации

STABILITY CONTROL METHOD AND SYSTEM FOR USE WHEN DRIVING ON A LOW-MU SURFACE

Номер: US20130245908A1
Автор: Jonassson Mats
Принадлежит: VOLVO CAR CORPORATION

A system and a method for assisting a driver of a vehicle to turn the vehicle when driving during low-mu surface conditions. The vehicle has a steering system, a plurality of wheels and a brake system allowing individual braking of the respective wheels of the vehicle. The system comprises a controller arranged to detect if the vehicle accelerates after the brakes of the vehicle have been applied, and detect a driver command to turn the vehicle in either direction. If both detections are positive the controller is further arranged to release the brake force on a side of the vehicle opposite to the detected turning command direction. 1. A stability control system for a vehicle having a steering system , a plurality of wheels and a brake system , the system operative to: detect forward acceleration of the vehicle after the brakes are applied;detect a driver command to turn the vehicle in a desired direction; and in response to the above two conditions, reduce brake force applied to wheels on a side of the vehicle opposite from the desired direction.2. The system of wherein the system is further operative to:compare a vehicle velocity with a predetermined velocity threshold;apply braking in a first manner to optimize velocity reduction if the vehicle velocity is above the threshold; andapply braking in a second manner to optimize vehicle control if the vehicle velocity is below the threshold.3. The system of wherein the controller is further operative to use the detected forward acceleration to determine a low coefficient-of-friction between a road surface and the wheels of the vehicle.4. The system of wherein the controller is further to use the detected forward acceleration to determine a downhill road gradient.5. The system of comprising wheel speed sensors and a vehicle accelerometer sending signals to the controller claim 1 , the controller using the signals to detect the forward acceleration after the brakes are applied.6. A vehicle stability control method ...

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Номер записи: 91
19-09-2013 дата публикации

VEHICLE BRAKE HYDRAULIC PRESSURE CONTROL APPARATUS

Номер: US20130245909A1
Автор: HIROSE Tomonori, WAKIZAKA Keisuke
Принадлежит: NISSIN KOGYO CO., LTD.

A vehicle brake hydraulic pressure control apparatus includes an adding section and a control differential pressure setting section. The adding section adds a feedback differential pressure obtained by executing a PI operation in accordance with a yaw rate deviation which is a difference between a target yaw rate being set to a value at which a vehicle turns to a higher coefficient-of-friction road side and an actual yaw rate and a feedforward differential pressure obtained by adding (i) a differential pressure based on a steering angle and (ii) a differential pressure based on a velocity of a vehicle body and the target yaw rate. The control differential pressure setting section sets a control differential pressure based on a value obtained by the adding section, after a predetermined time elapses since start of differential pressure control. 1. A vehicle brake hydraulic pressure control apparatus comprising:a hydraulic pressure adjusting unit that individually adjusts brake hydraulic pressures acting on wheel brakes for right and left front wheels and right and left rear wheels;a split road determining section that determines as to whether or not road surfaces which the right wheels and the left wheels are in contact with constitute a split road in which coefficients of friction of the road surfaces are different from each other, wherein if the split road determining section determines that the road surfaces constitute the split road when antilock braking control is executed, the hydraulic pressure adjusting unit is controlled to execute differential pressure control so that the brake hydraulic pressures of the wheel brakes on a higher coefficient-of-friction road side are higher than those of the wheel brakes on a lower coefficient-of-friction road side;a steering angle sensor that detects a steering angle;a yaw rate sensor that detects an actual yaw rate of a vehicle;a vehicle body velocity acquiring section that acquires a velocity of a vehicle body;a target ...

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Номер записи: 92
19-09-2013 дата публикации

BRAKE FORCE CONTROL APPARATUS FOR VEHICLE AND BRAKE FORCE CONTROL METHOD FOR VEHICLE

Номер: US20130245910A1
Автор: Watanabe Yoshinori
Принадлежит: TOYOTA JIDOSHA KABUSHIKI KAISHA

A brake force control apparatus includes a diagonal two-system brake device and performs front-rear wheel distribution control of brake force by individually controlling the brake pressure of the left and right rear wheels so as to obtain a target relationship between a wheel speed of the left and right rear wheels and the front wheels during braking. It is determined whether or not a difference in wheel speed between one wheel of one system and one wheel of the other system or a difference in wheel speed between the other wheel of the one system and the other wheel of the other system exceeds a threshold. When the threshold is exceeded, the reduction of brake pressure by the front-rear wheel distribution control of brake force is not performed with respect to a rear wheel with a lower wheel speed from among the left and right rear wheels. 1. A brake force control apparatus for a vehicle that has a brake device provided with a brake pressure control system for a left front wheel and a right rear wheel and a brake pressure control system for a right front wheel and a left rear wheel , and performs front-rear wheel distribution control of brake force by individually controlling the brake pressure of the left and right rear wheels so as to obtain a target relationship between a slip degree index value of the left and right rear wheels and a slip degree index value of the front wheels during braking , the brake force control apparatus comprising:a controller configured to, when either of a difference in slip degree index value between one wheel of one of the systems and one wheel of the other of the systems and a difference in slip degree index value between the other wheel of the one system and the other wheel of the other system exceeds a threshold for the difference, inhibit a reduction of brake pressure by the front-rear wheel distribution control of brake force with respect to a rear wheel of the system including a wheel with a lower wheel speed from among the two ...

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Номер записи: 93
26-09-2013 дата публикации

Electromechanical braking system for an aircraft

Номер: US20130253736A1
Автор: DAVID Frank
Принадлежит: Messier Bugatti Dowty SA

The invention relates to an aircraft braking system having brakes with electromechanical braking actuators (103) adapted to press selectively against associated stacks of disks in order to generate a braking torque on associated wheels of the aircraft; at least one control module (130) receiving braking setpoints and responding by generating a braking command (121); and at least one power module (120) responding to the braking command by delivering AC power to the motors of actuators connected to the power module so that the motors develop a braking force corresponding to the braking setpoints. According to the invention, the control module includes a digital processor stage (131) and an analog processor unit (135).

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Номер записи: 94
26-09-2013 дата публикации

Optimal Fusion Of Electric Park Brake And Hydraulic Brake Sub-System Functions To Control Vehicle Direction

Номер: US20130253793A1
Автор: Lee Jin-Woo, Litkouhi Bakhtiar Brian
Принадлежит: GM GLOBAL TECHNOLOGY OPERATIONS LLC

A method, for controlling direction of a vehicle as desired in connection with operation of an autonomous driving maneuver using selectively, independently and/or in combination, multiple electrical park brakes (EPBs) and multiple hydraulic brakes (HBs). The method includes determining a total brake force needed for redirecting the vehicle in a pre-determined manner, and determining whether an applicable EPB can provide the total brake force needed. The method further includes providing, if it is determined that the applicable EPB can provide the total brake force needed, a brake command instructing the applicable EPB to apply the total brake force. The method also includes determining, if it is determined that the EPB is alone insufficient, an optimal fusion of the EPBs and the HBs, including two front and two rear HBs, two rear EPBs, and in some embodiments, also two front EPBs. 1. A method , for controlling direction of a vehicle as needed in connection with operation of an autonomous driving maneuver using selectively , independently and/or in combination , multiple electrical park brakes (EPBs) associated with at least two rear wheels of the vehicle and multiple hydraulic brakes associated with the at least two rear wheels of the vehicle and two front wheels of the vehicle , comprising:determining, by an in-vehicle processor, a total brake force needed for redirecting the vehicle in a pre-determined manner;determining, by the processor, whether an applicable electrical park brake (EPB), of the multiple electrical park brakes (EPBs), can provide the total brake force needed;providing, by the processor, if it is determined that the applicable electrical park brake (EPB) can provide the total brake force needed, a brake command instructing the applicable electrical park brake (EPB) to apply the total brake force; anddetermining, by the processor, if it is determined that the applicable electrical park brake (EPB) cannot alone provide the total brake force needed, ...

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Номер записи: 95
26-09-2013 дата публикации

Braking system and a method for braking a vehicle in the case of abrupt changes in the friction coefficient

Номер: US20130253795A1
Автор: Andreas Reize, Phillip Frueh, Rainer Brueggemann
Принадлежит: ROBERT BOSCH GMBH

A brake device is described for braking the wheels of a vehicle. The brake device includes at least one brake master cylinder, a brake booster, a wheel brake, a return pump, using which a hydraulic fluid may be pumped back from the wheel brake in the direction of brake master cylinder. A sensor system for detecting an abrupt negative change in the friction coefficient of the roadway is provided. An arrangement is provided according to which the boost of the brake booster is set to a smaller value if a braking maneuver has been detected on a roadway having an abrupt negative change in the friction coefficient than in the case of a braking maneuver on a roadway without an abrupt negative change in the friction coefficient.

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Номер записи: 96
03-10-2013 дата публикации

ELECTRONIC CONTROL BRAKE SYSTEM FOR VEHICLES

Номер: US20130257142A1
Автор: Kim Hee Jun, Yang I Jin
Принадлежит:

Disclosed are electronic control brake systems for vehicles which suppress residual frictional force generated due to contact between pads and a disc. 1121. An electronic control brake system for vehicles comprising an electronic control unit enabling a control of an anti-lock brake system (ABS) mode and a traction control system (TCS) mode , a master cylinder forming brake hydraulic pressure according to operation of a brake pedal , wheel brakes , each of which includes a caliper device including a disc provided in a vehicle and advancing and retracting a pair of pads pressing the disc so as to exhibit wheel braking force by the brake hydraulic pressure transmitted from the master cylinder , plural NO type solenoid valves and NC type solenoid valves respectively provided at upstream sides and downstream sides of the wheel brakes and controlling the flow of the brake hydraulic pressure , low pressure accumulators in which a fluid discharged from the wheel brakes is temporarily stored during the ABS mode braking of the solenoid valves , pumps and a motor pressurizing the fluid stored in the low pressure accumulators so as to discharge the fluid to the wheel brakes or the master cylinder , a check valve provided between the low pressure accumulator and the pump , an NC type shuttle valve provided on an oil suction path connecting from the master cylinder to an inlet of the pump so as to perform the TCS mode , and a TC solenoid valve provided between an outlet of the pump and the master cylinder , wherein the electronic control unit moves a fluid in a closed circuit section (L) provided at an oil suction path side to an outlet side of the pump by operating the pump , and moves a part of a fluid in a closed circuit section (L) provided at the wheel brake side to the closed circuit section (L) , thereby retracting the pads from the disc.21. The electronic control brake system for vehicles according to claim 1 , wherein the closed circuit section (L) is formed between the ...

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Номер записи: 97
03-10-2013 дата публикации

Motion stabilizer for tractor

Номер: US20130261840A1
Автор: Kazuaki Miyata, Takeshi Kojima, Tomoyuki Futamura
Принадлежит: Honda Motor Co Ltd, Nissin Kogyo Co Ltd

A pendular motion determination unit of a motion stabilizer for a tractor includes a parameter computation unit configured to compute a determination parameter PA indicative of a quantity of change in an actual yaw rate Y, a threshold value setting unit configured to compute a threshold value PAth for the determination parameter PA, and a determination unit configured to determine that a pendular motion caused by swaying motion of a trailer is imparted, if the determination parameter PA is greater than the threshold value PAth. At least one of PAth and PA is changed based upon a correlation of a value related to a lateral acceleration based yaw rate Yg with a value related to the standard yaw rate Ys and a correlation of a value related to the actual yaw rate Y with a value related to the standard yaw rate Ys.

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Номер записи: 98
03-10-2013 дата публикации

Brake pressure computing apparatus, brake control system, and non-transitory computer-readable memory medium

Номер: US20130261857A1
Автор: Etsuji Matsuyama
Принадлежит: Mitsubishi Electric Corp

A brake pressure computing apparatus acquires a target cylinder pressure which is a target value of the pressure inside the brake cylinder of an air brake, and is equipped with a target cylinder pressure acquirer, a deceleration differential information acquirer, and a target cylinder pressure correction value acquirer. The target cylinder pressure acquirer acquires a target cylinder pressure on the basis of a required braking force and a target cylinder pressure correction value. The deceleration differential information acquirer acquires deceleration differential information indicating the difference between the target value of the deceleration and the actual value of the deceleration. The target cylinder pressure correction value acquirer acquires the target cylinder pressure correction value on the basis of the deceleration differential information.

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Номер записи: 99
03-10-2013 дата публикации

VEHICLE BRAKE PRESSURE CONTROLLER

Номер: US20130261905A1
Автор: Muraoka Masashi
Принадлежит: NISSIN KOGYO CO., LTD.

In one embodiment, a vehicle brake pressure controller includes: a sensor and a control section. The sensor detects a dynamic characteristic quantity of a vehicle, and outputs it as first information. The control section includes: an input section configured to receive the first information; a conversion processing section configured to convert the first information into second information having a standardized format; and a correction processing section configured to correct the second information into third information, depending on the vehicle. Hence, the control section performs a brake pressure control based on the third information. 1. A vehicle brake pressure controller comprising:a sensor configured to detect a dynamic characteristic quantity of a vehicle and to output the dynamic characteristic quantity as first information; and an input section configured to receive the first information from the sensor;', 'a conversion processing section configured to convert the first information into second information having a standardized format; and', 'a correction processing section configured to correct the second information into third information, depending on the vehicle,, 'a control section comprisingwherein the control section performs a brake pressure control based on the third information.2. The vehicle brake pressure controller of claim 1 ,wherein the conversion processing section converts the first information into the second information, depending on a posture of the sensor with respect to the vehicle brake pressure controller, andwherein the correction processing section corrects the second information into the third information, depending on a posture of the vehicle brake pressure controller with respect to the vehicle.3. The vehicle brake pressure controller of claim 1 ,wherein the conversion processing section includes a first filter configured to perform a first signal characteristic conversion on the first information, andwherein the correction ...

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Номер записи: 100