Control Of Brake Pressure Patents (Class 701/78)
  • Patent number: 11975699
    Abstract: A method for monitoring an implementation of an assistance braking specification, requested in an automated fashion by a brake system in a vehicle includes: detecting whether an assistance braking specification which is requested in an automated fashion is present; detecting an actual dynamics variable, the actual dynamics variable including wheel dynamics of at least one wheel of the vehicle and/or of a trailer, the actual dynamics variable being assigned to a wheel which is to be braked as a result of the assistance braking specification which is requested in an automated fashion; determining a reference dynamics variable, the reference dynamics variable including driving dynamics of the vehicle and/or of the trailer; and comparing the actual dynamics variable with the reference dynamics variable. When an assistance braking specification is present: a faultfree implementation of the assistance braking specification which is requested is detected if the actual dynamics variable deviates.
    Type: Grant
    Filed: March 22, 2018
    Date of Patent: May 7, 2024
    Assignee: ZF CV SYSTEMS EUROPE BV
    Inventors: Florian Schwagmeyer, Torsten Wallbaum
  • Patent number: 11835039
    Abstract: A method for monitoring the functioning of a compressor, which is switchable into a delivery mode and, when in the delivery mode, delivers compressed air via a dryer line of a compressed-air preparation unit into at least one main supply line, from which multiple supply lines of compressed-air consumer circuits branch off, wherein a pressure sensor is connected at each of at least some of the supply lines, is disclosed. The method results in outputting a warning message if a weighted pressure gradient grd_pV_W has not exceeded a gradient limiting value grd_pG_W within a predefined monitoring time period TM.
    Type: Grant
    Filed: July 2, 2019
    Date of Patent: December 5, 2023
    Assignee: ZF CV Systems Hannover GmbH
    Inventors: Stefan Brinkmann, Dirk Hillbring, Heinrich Diekmeyer
  • Patent number: 11491963
    Abstract: A parking brake valve device for controlling a spring accumulator parking brake in an electro-pneumatic brake system includes a compressed air inlet configured to connect to a compressed air supply. The parking brake valve device also includes an electro-pneumatic handbrake (EPH) valve configuration and a parking brake control outlet configured to connect a spring accumulator parking brake, and a trailer control valve (TCV) device configured to control a trailer control outlet and a trailer supply outlet for a trailer brake system. The parking brake valve device further includes a multiplex switching device connected to the compressed air inlet and having electro-pneumatic switching valves configured to be controlled via electrical control signals for selective compressed air supply and venting of the EPH valve configuration and/or the TCV device.
    Type: Grant
    Filed: August 24, 2018
    Date of Patent: November 8, 2022
    Assignee: ZF CV SYSTEMS EUROPE BV
    Inventor: Julian Van Thiel
  • Patent number: 11458972
    Abstract: A vehicle control apparatus is disclosed. The vehicle control apparatus includes a distance sensor configured to sense a distance from a speed bump, a speed sensor configured to sense a speed of a vehicle, a vehicle driver configured to control an operation of a brake or an operation of an accelerator, and a processor configured to provide an input parameter comprising a speed and a weight of the vehicle to a prediction model and control the vehicle driver so that the brake is operated at a braking intensity outputted from the prediction model when the vehicle enters the speed bump on the basis of the distance from the speed bump.
    Type: Grant
    Filed: May 29, 2019
    Date of Patent: October 4, 2022
    Assignee: LG ELECTRONICS INC.
    Inventor: Taehyun Kim
  • Patent number: 11158142
    Abstract: A method for tire force reserve estimation is applicable to a vehicle. In the method, vehicle motion information including the longitudinal acceleration, the lateral acceleration, the change of the tire rotation angle at different times, the change of the yaw at different times, the steering angle of the steering tires, etc. is continuously detected, for estimating the current normal force, the current longitudinal force and the current lateral force of each of the tires. Finally, the current normal force, the current longitudinal force, the current lateral force and the coefficient of friction of the road relative to the tires are applied to estimate the longitudinal tire force reserve and the lateral tire force reserve.
    Type: Grant
    Filed: December 7, 2018
    Date of Patent: October 26, 2021
    Assignee: HUA-CHUANG AUTOMOBILE INFORMATION TECHNICAL CENTER CO., LTD.
    Inventors: Bo-Chiuan Chen, Ya-Yu You, Yu-Min Lin, Wei-Jie Chen, Yuan-Chun Chen, Di Ku
  • Patent number: 11007991
    Abstract: A device for controlling a solenoid valve that controls the through-flow of a medium in a closed-loop manner includes a control procedure implemented by the device. The control procedure is configured at least in regions as a ramp function. The ramp starts with a ramp start current intensity that is less than an opening start current intensity of the valve at which the valve starts to open. The ramp ends with a ramp end current intensity that is greater than an opening end current intensity at which the valve is fully open. The device is configured to one or more of determine and adjust an amount of the ramp start current intensity in dependence upon a pressure. The amount determined and/or adjusted takes into consideration a pressure of the medium against which the solenoid valve opens.
    Type: Grant
    Filed: August 28, 2018
    Date of Patent: May 18, 2021
    Assignee: Robert Bosch GmbH
    Inventors: Andrej Gardt, Valentin Schubitschew, Volker Edelmann
  • Patent number: 10967839
    Abstract: A vehicle control system of a vehicle includes a trailer brake control electronic control unit (ECU), which in turn includes a trailer brake output circuit. The trailer brake control ECU is configured to receive an electronic parking brake (EPB) state flag and a vehicle acceleration message. The dynamic EPB state flag indicates one of an ON state and an OFF state of a dynamic EPB, and the vehicle acceleration message indicates an acceleration of the vehicle. The trailer brake control ECU outputs, via the trailer brake output circuit, a trailer brake signal based on the acceleration of the vehicle indicated by the received vehicle acceleration message in response to determining that the received dynamic EPB state flag indicates the ON state.
    Type: Grant
    Filed: January 31, 2019
    Date of Patent: April 6, 2021
    Assignee: Toyota Motor Engineering & Manufacturing North America, Inc.
    Inventors: Adam VanAntwerp, Corey Zwegers, Stephen Robertson, Takayuki Goto, Yuichi Shimizu
  • Patent number: 10793125
    Abstract: The vehicle braking device performs a control which makes an actual value of physical quantity associated with a braking force follow a target value thereof when the actual value is outside a dead zone and a control which suppresses a change of the actual value when the actual value is within the dead zone and includes a judging portion which judges whether or not the actual value passes through the dead zone with a value beyond the upper limit threshold value and a setting portion which sets a second upper limit threshold value more closely approximated than a first upper limit threshold value when the actual value is judged not to pass through the dead zone, as the upper limit threshold value, when the actual value is judged to pass through the dead zone by the judging portion.
    Type: Grant
    Filed: November 25, 2016
    Date of Patent: October 6, 2020
    Assignees: ADVICS CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Takahiro Okano, Daisuke Nakata
  • Patent number: 10597015
    Abstract: A braking system includes an electric motor configured to output a braking force, and a controller configured to control the electric motor. The controller is supplied with electric power from both a main power source and an auxiliary power source. The electric motor has a first state in which the electric motor is supplied with electric power from the main power source when the main power source has a voltage V1 equal to or higher than a threshold value Va; a second state in which the electric motor is supplied with electric power from the auxiliary power source, and the voltage V1 of the main power source is lower than the threshold value Va; and a third state in which the electric motor is supplied with electric power from the main power source, and the voltage V1 of the main power source is lower than the threshold value Va.
    Type: Grant
    Filed: March 16, 2017
    Date of Patent: March 24, 2020
    Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Takanori Mizusaki, Takato Suzuki, Yasufumi Konishi
  • Patent number: 10507559
    Abstract: A machine tool for detecting a brake failure more reliably in a mechanism that stops the rotation of a vertical shaft by at least two brakes includes a ball screw extended in a vertical direction, a driving motor that rotates the ball screw, a movable part that vertically moves along the ball screw in accordance with the rotation of the ball screw driven by the driving motor, at least two brakes that prevent a fall of the movable part while power supply to the driving motor is stopped, a brake controller that releases at least one of the at least two brakes while power supply to the driving motor is stopped, and a detector that detects presence/absence of a fall of the movable part or a fall distance of the movable part resulting from the release of the at least one brake, thereby detecting a trouble of an unreleased one of the at least two brakes.
    Type: Grant
    Filed: June 22, 2015
    Date of Patent: December 17, 2019
    Assignee: DMG Mori Co. Ltd.
    Inventors: Yoichi Okamoto, Eiichiro Gomi
  • Patent number: 10343660
    Abstract: A vehicle includes at least one brake assembly configured to brake at least one wheel of the vehicle in response to an applied voltage. A power supply is in signal communication with the at least one brake assembly. The power supply is configured to operate in a first mode that outputs a first voltage and a second mode that outputs a second voltage greater than the first voltage. A brake control system is in signal communication with the at least one brake assembly and the power supply. The brake control system is configured to determine a driving state of the vehicle, and is configured to output a brake boost request signal to initiate the second mode of the power supply in response to detecting the driving state, wherein a braking response time of the at least one brake assembly is improved in response to applying the second voltage.
    Type: Grant
    Filed: May 15, 2017
    Date of Patent: July 9, 2019
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Michael D. Rizzo, Mark J. Rychlinski, Paul S. Shaub, Anthony J. Rifici, Phanu Amatyakul
  • Patent number: 10247124
    Abstract: A method and a system for detection of torque deviations of an engine (101) in a vehicle (100). A measurement (201) is made of actual measured values Dact related to a behavior of at least one parameter which is related to an actual torque Meng_act delivered by the engine (101). This actual torque Meng_act is delivered here by the engine (101) in consequence of a torque Meng_req demanded from the engine (101). A comparison (202) is then made of the actual measured values Dact which are related to the behavior of the at least one parameter with previously determined measured values Dref of correspondingly at least one respective parameter related to the actual torque Meng_act. The previously determined measured values Dref will here have been determined during normal operation of the vehicle (100). Detection is then made of whether the actual measured actual torque Meng_act deviates from the demanded torque Mengj-eq.
    Type: Grant
    Filed: May 26, 2016
    Date of Patent: April 2, 2019
    Assignee: SCANIA CV AB
    Inventors: Björn Johansson, Carl Svärd
  • Patent number: 10131331
    Abstract: A braking force control device includes an actuator configured to control a braking force generated in vehicle wheels of a vehicle and a control unit configured to output a braking force command value to the actuator. The control unit is configured to perform at least one of the following processes of generating a braking force command value by performing a filter processing on a required braking force based on a braking operation amount using a filter having a smaller damping ratio than a damping ratio of a pitch motion of the vehicle when the required braking force increases, or generating the braking force command value by performing the filter processing on the required braking force based on the braking operation amount using a filter having a greater damping ratio than the damping ratio of the pitch motion of the vehicle when the required braking force decreases.
    Type: Grant
    Filed: April 19, 2016
    Date of Patent: November 20, 2018
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Shiro Monzaki, Tamio Kano, Tomoaki Morimoto, Daiji Watanabe
  • Patent number: 9726497
    Abstract: A method for determining a yaw angle estimate or vehicle heading direction is presented. A potential range of yaw angles is generated based on a plurality of primary telematics data. One or more yaw angle estimates are generated from the potential range of yaw angles. A driving pattern is determined based on at least one of the yaw angle estimates. The primary telematics data is a plurality of telematics data originated from a client computing device. The effects of gravity have been removed from the plurality of telematics data in a first primary movement window.
    Type: Grant
    Filed: September 2, 2016
    Date of Patent: August 8, 2017
    Assignee: STATE FARM MUTUAL AUTOMOBILE INSURANCE COMPANY
    Inventors: Sunish Shreenarayan Menon, David J. Dosher, Scott Thomas Christensen
  • Patent number: 9656639
    Abstract: Aspects of the disclosure provide a system and methods for inducing a skid in a vehicle. The system includes a mobile controller corresponding to a vehicle and communicatively coupled to a brake system of the vehicle, and a remote controller in wireless communication with the mobile controller. The remote controller is configured to receive a selection of the mobile controller for issuance of a braking command including a braking setting. In response to receipt of the braking command, the selected mobile controller is configured to operate the brake system of the vehicle to induce a skid in the vehicle according to the braking setting.
    Type: Grant
    Filed: September 30, 2016
    Date of Patent: May 23, 2017
    Assignee: The United States of America, as represented by the Secretary of Homeland Security
    Inventor: Ernie Brooks
  • Patent number: 9501063
    Abstract: An electric linear motion actuator includes an electric motor, a motion converting mechanism that converts the rotational motion of the electric motor into a linear motion of a linear moving member, a load sensor that detects the magnitude of the load applied to the brake disk from the linear moving member, and a controller that performs feedback control on the electric motor based on the difference between the load detected by the load sensor and a load command value. The controller reduces the number of revolutions of the electric motor when the linear moving member moves into a predetermined zone immediately before the position where the clearance between the linear moving member and the brake disk becomes zero.
    Type: Grant
    Filed: November 12, 2013
    Date of Patent: November 22, 2016
    Assignee: NTN Corporation
    Inventor: Yui Masuda
  • Patent number: 9434365
    Abstract: There is provided a hydraulic pressure controller to be mounted on a vehicle which is configured so that a driving torque transmitted to wheels during a stop of the vehicle reduces. The hydraulic pressure controller includes a vehicle holding controller configured to carry out a vehicle holding control to hold a brake hydraulic pressure applied to the wheels during the stop of vehicle stop. In the case that an actual-pressure-equivalent hydraulic pressure corresponding to a brake hydraulic pressure actually applied to the wheels is not more than a predetermined hydraulic pressure at a start time of the vehicle holding control, the vehicle holding controller sets a pressurization target pressure using a specific driving torque applied at the start time of the vehicle holding control and carries out a pressurization control to raise the brake hydraulic pressure to the pressurization target pressure.
    Type: Grant
    Filed: June 10, 2014
    Date of Patent: September 6, 2016
    Assignee: AUTOLIV NISSIN BRAKE SYSTEMS JAPAN CO., LTD.
    Inventor: Takashi Kinoshita
  • Patent number: 9366303
    Abstract: A tractor, including: an engine; a forward/backward movement clutch which is provided on a motive power transmission route from the engine to one or more traveling apparatuses, and is configured to carry out changes among forward movement, backward movement, and neutral; one or more brake pedals; and a control unit which is configured to allow, in association with stepping manipulation of the one or more brake pedals, one or more brakes to operate on the one or more traveling apparatuses and allow operating-pressure of the forward/backward movement clutch to lower.
    Type: Grant
    Filed: June 18, 2014
    Date of Patent: June 14, 2016
    Assignee: ISEKI & CO., LTD.
    Inventor: Tomoyuki Ishida
  • Patent number: 9321438
    Abstract: An automatic braking control device includes a temperature obtaining section for obtaining an index value of a temperature of brake fluid, a collision prediction time calculation section for calculating collision prediction time of a vehicle with an object, a collision determination section for determining whether the collision prediction time is less than or equal to a threshold, and a pressure control section for controlling a start timing of pressurization of the brake fluid when the collision prediction time is less than or equal to the threshold. The pressure control section sets the start timing to a first timing when the index value is a first temperature and to a second timing when the index value is a second temperature higher than the first temperature. Time from determination of the collision determination section to the first timing is shorter than time from the determination to the second timing.
    Type: Grant
    Filed: May 31, 2013
    Date of Patent: April 26, 2016
    Assignee: HINO MOTORS, LTD.
    Inventors: Toshiki Ezoe, Satoshi Hokari, Michiteru Arita, Masahiro Yamaguchi, Naoshi Ichinose
  • Patent number: 9248811
    Abstract: A pressure reduction start distance is obtained (S9) based upon a deceleration after an operation of an automatic brake. When an obstacle-to-vehicle distance between a vehicle and an obstacle ahead becomes a distance obtained by adding the pressure reduction start distance to a target stopping distance to the obstacle ahead, the reduction of the brake pressure is started (S11) to suppress a pitching vibration generated before and after the vehicle stops. When the obstacle-to-vehicle distance becomes a stopping brake start distance that is just before the target stopping distance, the brake pressure is increased (S13) so as to allow the vehicle to stop.
    Type: Grant
    Filed: March 13, 2012
    Date of Patent: February 2, 2016
    Assignee: FUJI JUKOGYO KABUSHIKI KAISHA
    Inventors: Hiroki Kato, Yuji Kii
  • Patent number: 9227605
    Abstract: 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.
    Type: Grant
    Filed: March 2, 2010
    Date of Patent: January 5, 2016
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Ryosuke Okubo
  • Patent number: 9211878
    Abstract: A method, apparatus and computer-readable medium for measuring a determining a validity of an estimate of a response time of a brake is disclosed. A sensor obtains a waveform of a parameter related to the engagement of the brake during engagement of the brake. A processor analyzes the obtained waveform, determines inflection points in the waveform within a selected time period, validates the signal integrity of the waveform and provides an indicator when the number of determined inflection points is greater than a pre-specified count value.
    Type: Grant
    Filed: March 6, 2013
    Date of Patent: December 15, 2015
    Assignee: Hamilton Sundstrand Corporation
    Inventor: Jason B. Kreienheder
  • Patent number: 9193339
    Abstract: A vehicle brake system and a method of control. The vehicle brake system may include a friction brake and a secondary brake that may be applied to slow rotation of a vehicle wheel when a wheel slip condition is detected.
    Type: Grant
    Filed: November 22, 2013
    Date of Patent: November 24, 2015
    Assignee: ArvinMeritor Technology, LLC
    Inventors: Yixin Yao, John Ashley Peterson
  • Patent number: 9180880
    Abstract: A driving force control system for a vehicle, which is configured to control a driving force of a vehicle by calculating an actual value of a stability factor of a running vehicle based on a detection value of a predetermined sensor, and adjusting the calculated actual value of the stability factor toward a target value of the stability factor determined depending on a travelling condition of the vehicle.
    Type: Grant
    Filed: March 30, 2011
    Date of Patent: November 10, 2015
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kazuya Okumura, Souichirou Shimura
  • Patent number: 9039102
    Abstract: Systems and methods disclosed herein may be useful emergency braking systems for use in, for example, an aircraft. A system is disclosed that allows emergency braking without the need for a manually operated emergency brake. For example, a system is provided comprising a potentiometer in mechanical communication with a brake pedal, a first electronic switch in electrical communication with the potentiometer, a second electronic switch indicating a displacement of the brake pedal, wherein a brake control valve opens in response to the first electronic switch, and wherein a shutoff valve opens in response to the second electronic switch.
    Type: Grant
    Filed: September 8, 2011
    Date of Patent: May 26, 2015
    Assignee: GOODRICH CORPORATION
    Inventors: Eric D. Cahill, Paul R. Burte
  • Patent number: 9043107
    Abstract: A vehicle yaw stability control method and a vehicle yaw stability control apparatus are provided. The yaw rate {dot over (?)} of the vehicle is measured. A first reference yaw rate {dot over (?)}ref is set. A difference yaw rate ?{dot over (?)} is set. Stabilizing braking intervention is triggered when a value of the difference yaw rate ?{dot over (?)} exceeds limits defined by difference yaw rate threshold values ?{dot over (?)}min, ?{dot over (?)}max. Information regarding the shape of the road ahead of the vehicle is acquired. The reliability of the driver steering input ? is evaluated upon stabilizing braking intervention being triggered. In case the driver steering input ? is deemed unreliable a replacement reference yaw rate {dot over (?)}refroad is set based on the acquired road shape and a replacement difference yaw rate ?{dot over (?)}road is set whereupon stabilizing braking intervention is performed based on the replacement difference yaw rate ?{dot over (?)}road.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: May 26, 2015
    Assignee: Volvo Car Corporation
    Inventors: Mohammad Ali, Mattias Bengtsson, Per Landfors
  • Patent number: 9037377
    Abstract: A vehicle includes a braking force application device that executes braking force holding control which holds braking force irrespective of braking operation by a driver during a stop on a slope; and a control limiting device that limits execution of the braking force holding control when a shift position is set in a neutral position.
    Type: Grant
    Filed: January 31, 2012
    Date of Patent: May 19, 2015
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Mitsuaki Higa, Katsuhiko Yamaguchi
  • Patent number: 9037375
    Abstract: Provided is a vehicle brake system capable of reducing a sense of discomfort felt by a driver, even if a transmission is shifted when a braking force holding function for keeping a vehicle stationary is in operation. A vehicle brake system includes a control system capable of determining whether an automatic transmission is set in a driving mode or in a non-driving mode, and is capable of operating the braking force holding function for keeping the vehicle stationary by holding a braking force generated through a brake pedal operation. Further, the control system operates the braking force holding function when a vehicle speed becomes lower than a predetermined threshold value by the braking force generated through the brake pedal operation, and if the control system determines that the automatic transmission is set in a non-driving mode, the control unit increases the braking force and holds the braking force.
    Type: Grant
    Filed: May 20, 2014
    Date of Patent: May 19, 2015
    Assignee: Honda Motor Co., Ltd.
    Inventors: Shunpei Tahara, Tohru Ikeda, Kazuya Sakurai, Yoshinari Sugita
  • Patent number: 9031759
    Abstract: To improve vehicle stability by starting control based on quicker detection of the possibility that a vehicle state will reach an unstable region. It is detected that a vehicle is in a pre-skid state that is the state prior to when the vehicle reaches an unstable region where skid occurs, and brake force is generated in a rear wheel at an outside of a turn when the pre-skid state is detected. As a result of generating this brake force, load applied to the wheels at the outside of the turn increases and lateral force of the vehicle increases. Thus, it is possible to make it more difficult for skid of the vehicle to occur, and so it is possible to inhibit, in advance, gentle deterioration in vehicle behavior such as slow spin. Accordingly, the possibility that a vehicle state has reached an unstable region can be detected earlier.
    Type: Grant
    Filed: September 9, 2010
    Date of Patent: May 12, 2015
    Assignee: Advics Co., Ltd.
    Inventors: Junya Nagaya, Toshihisa Kato
  • Patent number: 9026332
    Abstract: The invention relates to a method of controlling a vehicle brake adapted to exert a braking force in response to an actuation setpoint, in which: from a braking setpoint including low frequency components and high frequency components, a nominal actuation setpoint is determined for the brake actuator that takes account of all of the components of the braking setpoint; from the same braking setpoint, and from a measurement of the torque developed by the brake, a correction for the nominal actuation setpoint is determined, the correction taking account only of low frequency variations in the braking setpoint, the correction being adapted to take account of current or future operating conditions of at least said brake or of brakes subjected to the same braking setpoint; and the correction is added to the nominal setpoint.
    Type: Grant
    Filed: January 12, 2010
    Date of Patent: May 5, 2015
    Assignee: Messier-Bugatti-Dowty
    Inventor: Dominique Onfroy
  • Patent number: 9020730
    Abstract: A safety interlock system for a motor vehicle has a plurality of object sensors capable of detecting the presence of an object such as a pedestrian in the danger zone at the front of the vehicle, rear the vehicle or proximate to the wheels. A door sensor is capable of detecting the open or closed state of the vehicle doors. An interlock override switch and a control circuit are also connected to the safety interlock system. The control circuit is capable of activating the safety interlock system when a door open signal is received. When the safety interlock system is activated the control circuit may engage the brakes to prevent motion of the vehicle if an object signal is received from the object sensor.
    Type: Grant
    Filed: December 10, 2013
    Date of Patent: April 28, 2015
    Assignee: Continental Automotive Systems, Inc.
    Inventor: David Agnew
  • Patent number: 9020744
    Abstract: A method of controlling a three-wheeled vehicle comprises: determining a state of a load sensor associated with a portion of vehicle; selecting a first start mass when the load sensor is in a non-loaded state; selecting a second start mass when the load sensor is in a loaded state; determining at least one vehicle parameter during operation of the vehicle; determining a calculated mass based at least in part on the at least one vehicle parameter; determining an effective mass based at least in part on the calculated mass and a selected one of the first and second start masses; defining an output of an electronic stability system of the vehicle based at least in part on the effective mass; and controlling a stability of the vehicle using the output of the electronic stability system.
    Type: Grant
    Filed: September 13, 2013
    Date of Patent: April 28, 2015
    Assignee: Bombardier Recreational Products Inc.
    Inventor: Mario Dagenais
  • Publication number: 20150112568
    Abstract: It is determined whether or not there is a “wheel to be subject to the vehicle stability control, in which a braking force is decreased with respect to a braking force corresponding to the pressing force of the brake pad due to fade or the like” (reduced braking force wheel) during vehicle stability control. When there is a reduced braking force wheel, a “wheel with a highest order of priority determined in advance for wheels for which a braking force needs to be generated in order to enhance the travel stability in the vehicle stability control” (first braking force allocated wheel) is identified among wheels excluding the reduced braking force wheel, and the pressing force of the brake pad of the first braking force allocated wheel is increased based on a lack of the braking force in the reduced braking force wheel.
    Type: Application
    Filed: June 24, 2013
    Publication date: April 23, 2015
    Applicant: ADVICS CO., LTD.
    Inventor: Atsuto Hirota
  • Patent number: 9002611
    Abstract: Pitching is reduced even when strong braking operation is performed during low speed running. A vehicular brake hydraulic pressure control apparatus includes control section that performs pitching reducing control for reducing occurrence of pitching by controlling each control valve unit to switch brake hydraulic pressure between pressure increasing state, pressure decreasing state, and holding state.
    Type: Grant
    Filed: December 21, 2012
    Date of Patent: April 7, 2015
    Assignee: Nissin Kogyo Co., Ltd.
    Inventors: Eric Giddens, Shunichi Miyazawa
  • Patent number: 9002610
    Abstract: A brake system and related components including a metering device are configured to regulate a control signal received from a brake control device such that a control valve delays the supply of a level of requested braking pressure for a prescribed amount of time. The metering device can be an inversion valve and orificed check valve in a control circuit adapted to allow relatively unrestricted flow until a threshold pressure is reached, after which pressure the inversion valve closes and the flow is metered through an orifice. This has the effect of allowing rapid brake actuation to a first level, and then slowing further application of the brake until full requested braking is achieved. An electronic control unit can also be configured to regulate a control signal to delay development of the requested brake pressure.
    Type: Grant
    Filed: December 9, 2011
    Date of Patent: April 7, 2015
    Assignee: Bendix Commercial Vehicle Systems, LLC
    Inventors: Charles E. Eberling, James M. Hamar, Travis G. Ramler, John V. Ripley
  • Patent number: 8996271
    Abstract: 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.
    Type: Grant
    Filed: September 4, 2009
    Date of Patent: March 31, 2015
    Assignee: Bosch Corporation
    Inventor: Shunsaku Ono
  • Publication number: 20150073678
    Abstract: A braking force control device includes a braking device capable of individually adjusting braking force generated at each wheel of a vehicle; and a control device capable of executing braking force distribution control to individually control the braking force of each of right and left wheels such that slip states of the right and left wheels of the vehicle become equivalent by controlling the braking device. The control device executes the braking force distribution control based on a change rate upper limit of a change rate of lateral braking force deviation which is deviation of the braking force of the right and left wheels, so that there is an effect that behavior of the vehicle can be stabilized.
    Type: Application
    Filed: January 17, 2013
    Publication date: March 12, 2015
    Applicant: TOYOTA JIDODHA KABUSHIKI KAISHA
    Inventors: Satoshi Shimizu, Yoshinori Watanabe
  • Patent number: 8977466
    Abstract: 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.
    Type: Grant
    Filed: December 20, 2012
    Date of Patent: March 10, 2015
    Assignee: Nissin Kogyo Co., Ltd.
    Inventor: Tomoaki Sekiya
  • Patent number: 8977467
    Abstract: A control unit for brake-slip-controlled operation of the brake device in a state in which braking torque is transferred from the rear to the front wheels by the coupling arrangement, at least one rotational speed sensor in a drive train of the vehicle for inputting into the control unit rotational speed signals representing the rotational behavior of the coupled front wheels and rear wheels, at least one acceleration sensor for inputting into the control unit acceleration signals representing the vehicle longitudinal acceleration, and/or a vehicle GPS device for inputting into the control unit position signals representing positions of the vehicle, the control unit determining at least one first variable, which is characteristic of a vehicle reference speed and/or a vehicle reference acceleration, based on the acceleration and/or position signals, and so as to determine a second variable, which is characteristic of the rotational behavior of the coupled front and rear wheels, based on the rotational speed si
    Type: Grant
    Filed: November 16, 2010
    Date of Patent: March 10, 2015
    Assignee: Knorr-Bremse Systeme Fuer Nutzfahrzeuge GmbH
    Inventors: Michael Herges, Andreas Wimmer
  • Patent number: 8977468
    Abstract: Disclosed herein are a solenoid valve control apparatus and method. The solenoid valve control apparatus to control a solenoid valve which include a solenoid coil and is opened and closed by current supplied to the solenoid coil, includes a switching unit which switches the current supplied to the solenoid coil, a pre-driver unit which outputs a driving signal to drive the switching unit, a current detection unit which detects the current flowing in the solenoid coil, and an MCU which controls the pre-driver unit so as to output the driving signal from the pre-driver unit to the switching unit such that a value of the current detected by the current detection unit reaches a target current value during current control of the solenoid valve and controls the pre-driver unit such that a frequency of the output driving signal is varied during output of the driving signal.
    Type: Grant
    Filed: April 15, 2014
    Date of Patent: March 10, 2015
    Assignee: Mando Corporation
    Inventor: Soo-Hyun Ko
  • Patent number: 8977463
    Abstract: A vehicle brake controller is capable of executing limit control for limiting increase in braking force applied to front wheels by using a deceleration of a vehicle. The vehicle brake controller is configured to start the limit control when the deceleration of the vehicle becomes greater than or equal to a start determination value before a start determination time period elapses after a deceleration starting point in time, at which the deceleration of the vehicle is started by application of braking force at least to the front wheels. The vehicle brake controller is configured to end the limit control if the deceleration of the vehicle is less than an end determination value, which is greater than the start determination value, at a point in time when an end determination time period, which is longer than the start determination time period, has elapsed from the deceleration starting point in time.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: March 10, 2015
    Assignee: Advics Co., Ltd.
    Inventors: Takuya Inoue, Yusuke Takeya, Masato Terasaka
  • Patent number: 8965657
    Abstract: Systems and methods for detecting an on ground condition of an aircraft are disclosed. A weight on wheel system may determine that an aircraft is on the ground. Wheel speed sensors may measure the speed of the aircraft wheels. Axle reference speeds may be calculated for each landing gear based on the speed of the aircraft wheels. A brake control unit may determine that the axle reference speed for each axle of the landing gears is above an on ground threshold speed, and the brake control unit may allow braking to be applied.
    Type: Grant
    Filed: July 2, 2013
    Date of Patent: February 24, 2015
    Assignee: Goodrich Corporation
    Inventors: Marc Georgin, Richard Metzger
  • Patent number: 8965656
    Abstract: The present disclosure provides a motor-driven booster type brake system and method thereof. The brake system includes a pedal force sensor for detecting pedal force of a driver applied to a brake pedal, a master cylinder delivering hydraulic pressure to wheel brakes, a booster delivering multiplied force to the master cylinder using a motor, and an ECU controlling the motor based on a detection value of the pedal force. In the brake system, the ECU controls the motor based on hydraulic pressure delivered from the master cylinder to the wheel brakes if an ABS mode is not activated, and controls the motor by maintaining an electric current input to the motor to be within a preset range of electric current if the ABS mode is activated.
    Type: Grant
    Filed: January 10, 2012
    Date of Patent: February 24, 2015
    Assignee: Hyundai Mobis Co., Ltd.
    Inventor: Wan Kyo Jung
  • Publication number: 20150046056
    Abstract: A method for determining a value of a brake pressure modulated by a pneumatic channel of a braking value encoder having at least one electrical channel, in a braking device of a vehicle, including: (a) a first characteristic curve, in which the dependence of the signals, modulated by the at least one electrical sensor, on the degree of activation of the braking value encoder is represented, is determined and stored; (b) a second characteristic curve, in which the dependence of the brake pressure values, modulated by the channel, on the electrical signals detected by the sensor is represented, is determined and stored; and (c) the brake pressure value corresponding to a specific braking request as a result of activation of the encoder is determined based on the first and second characteristic curves.
    Type: Application
    Filed: February 14, 2013
    Publication date: February 12, 2015
    Inventor: Markus Schreiter
  • Patent number: 8935062
    Abstract: A vehicle transmission device includes an input member coupled to a combustion engine and a rotary electric machine; an output member coupled to wheels; a speed change mechanism with a plurality of friction engagement elements and that provides a plurality of shift speeds; and a control device that controls the speed change mechanism. When a during-regeneration downshift is performed while the rotary electric machine is outputting regenerative torque, the control device sets a target increase capacity, which is a target value of a transfer torque capacity of an engagement-side element to be engaged after an increase, increases the transfer torque capacity of the engagement-side element to the target increase capacity over a predetermined torque capacity increase period, and decreases a transfer torque capacity of a disengagement-side element, which is to be disengaged, over a predetermined torque capacity decrease period that at least partially overlaps the torque capacity increase period.
    Type: Grant
    Filed: March 28, 2011
    Date of Patent: January 13, 2015
    Assignee: Aisin AW Co., Ltd.
    Inventors: Nobuaki Inagaki, Hiroya Ueno, Shigekazu Hase, Nobuhiro Iwai, Hiroshi Tsutsui
  • Patent number: 8930111
    Abstract: 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.
    Type: Grant
    Filed: October 28, 2011
    Date of Patent: January 6, 2015
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Yoshinori Watanabe
  • Patent number: 8924120
    Abstract: A regenerative brake control system for a vehicle includes a vehicle controller, a driveline torque distribution device interfacing with the vehicle controller, an electric machine interfacing with the driveline torque distribution device, a plurality of wheels coupled to the electric machine and at least one traction condition input indicating traction of the plurality of wheels provided to the vehicle controller. The vehicle controller engages the driveline torque distribution device and the electric machine apportions regenerative brake torque to the wheels in proportion to the traction of the wheels. A regenerative brake control method for a vehicle is also disclosed.
    Type: Grant
    Filed: June 6, 2009
    Date of Patent: December 30, 2014
    Assignee: Ford Global Technologies, LLC
    Inventor: William Paul Perkins
  • Publication number: 20140375114
    Abstract: A method for operating a motor vehicle hydraulic braking system having at least one electric motor-operated braking pressure generator. The output power of the electric motor-operated braking pressure generator is restricted during normal driving/braking situations and the restriction is temporarily deactivated upon identification of a critical driving situation, such as an overstressing of the brake system to include brake fade.
    Type: Application
    Filed: December 21, 2012
    Publication date: December 25, 2014
    Inventors: Rudolf Daniels, Ian Moore, Thomas Svensson, Joerg Riethmüller, Herbert Vollert, Timo Jahnz
  • Patent number: 8918262
    Abstract: 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-
    Type: Grant
    Filed: March 8, 2011
    Date of Patent: December 23, 2014
    Assignee: Knorr-Bremse Systeme fuer Nutzfahrzeuge GmbH
    Inventors: Friedbert Roether, Adnan Mustapha, Gerhard Wieder, Dirk Brenner
  • Patent number: 8914214
    Abstract: 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.
    Type: Grant
    Filed: January 25, 2011
    Date of Patent: December 16, 2014
    Assignee: Mitsubishi Electric Corporation
    Inventor: Etsuji Matsuyama