Control Of Brake Pressure Patents (Class 701/83)
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Patent number: 12077172Abstract: Controlling an actual slip of at least one driven axle of a motor vehicle with at least one axle having at least one wheel and a one drive unit for providing a drive torque for the axle and for the wheel can be carried out by a control device for controlling the drive unit. The control device can be configured for establishing a first actual speed of the motor vehicle; establishing a second actual speed of the at least one wheel; calculating a target speed of the at least one wheel for the established first actual speed taking into account parameters; determining an actual slip of the at least one wheel with respect to a substrate on which the motor vehicle is being moved; when the actual slip exceeds a defined first limit slip, generating a limit torque by which the drive torque produced by the drive unit is adjusted.Type: GrantFiled: December 11, 2019Date of Patent: September 3, 2024Assignee: GKN Automotive LimitedInventors: Gerd Kaiser, Enrique Cordero, Volker-René Ruiters, Marius Offenberg, Rudolf Fitz
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Patent number: 11958456Abstract: Provided is an electronic parking brake system including: an electronic parking brake configured to provide a clamping force required for parking a vehicle by a motor; and a controller electrically connected to the motor, wherein the controller is configured to, in response to the electronic parking brake being in a parking release state or in a parking stop state and a transmission position being in a P-stage, identify whether a rollback occurs in the vehicle, and upon determining that a rollback has occurred in the vehicle, operate the electronic parking brake to park the vehicle.Type: GrantFiled: July 7, 2021Date of Patent: April 16, 2024Assignee: HL MANDO CORPORATIONInventor: ChanWon Lee
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Patent number: 11760329Abstract: A brake system for motor vehicles may include an actuation device (e.g., brake pedal), a travel simulator to generate a feedback force on the actuation device, a first piston-cylinder unit having at least one piston that separates two working chambers that are connected via at least one hydraulic line to at least one wheel brake of a brake circuit, a control device and a pressure supply unit driven by an electric motor. At least one wheel brake may be assigned to each brake circuit, and each wheel brake may be connected to its associated hydraulic connecting line via a controllable switching valve. An outlet valve may be assigned to a single wheel brake or to a single wheel brake of each brake circuit in a hydraulic connection between the wheel brake and a pressure medium storage container, without any further valve disposed as such.Type: GrantFiled: December 30, 2015Date of Patent: September 19, 2023Assignee: IPGATE AGInventors: Heinz Leiber, Thomas Leiber
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Patent number: 11383764Abstract: The turning radius of a differentially steered vehicle towing a trailer is controlled when turning so that its turning radius is greater than a minimum allowable turning radius. The turning radius may be autonomously adjusted using a controller to monitor the instantaneous rotational speed differential between the driven wheels and increase or decrease the relative speed between the wheels when the instantaneous rotational speed differential exceeds a threshold rotational speed differential, indicating a turn which is too tight. Alternately, the turning radius may be controlled by the vehicle's operator, who receives a signal from the controller indicating that the vehicle's turning radius is less than the minimum allowable. The operator may then take action to enlarge the turning radius using manual controls.Type: GrantFiled: November 12, 2019Date of Patent: July 12, 2022Assignee: CNH Industrial America LLCInventor: Jeffrey Brown Fay, II
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Patent number: 10836367Abstract: A method for carrying out a driver-independent braking maneuver of a motor vehicle includes ascertaining a reference trajectory of the motor vehicle, ascertaining a lateral guidance force variable representing the lateral guidance force necessary for guidance of the motor vehicle on the reference trajectory, ascertaining, as a function of the lateral guidance force variable, a longitudinal force variable representing the maximum longitudinal force transferable in a longitudinal vehicle direction, and, based on the longitudinal force variable and driver-independently, establishing a braking force variable representing the braking force of the motor vehicle.Type: GrantFiled: April 12, 2017Date of Patent: November 17, 2020Assignee: Robert Bosch GmbHInventors: Alfred Strehle, Markus Mengelkamp, Thomas Schmidt
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Patent number: 10703345Abstract: Methods, apparatus, systems and articles of manufacture are disclosed for automatically calibrating electronic trailer brake gain. An example apparatus includes a trailer brake gain calibrator programmed to modulate a trailer brake gain value based upon a derivative of a trailer hitch force and apply a pressure to a brake of a trailer based on the gain value.Type: GrantFiled: January 23, 2018Date of Patent: July 7, 2020Assignee: Ford Global Technologies, LLCInventors: Andrew Niedert, Anton Rogness, Elliott Pearson, Joshua Rajasingh
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Patent number: 9440627Abstract: Systems and vehicles for calculating trailer brake control parameters are disclosed. A system for calculating a trailer brake control parameter includes one or more processors, one or more memory modules communicatively coupled to the one or more processors, and machine readable instructions stored in the one or more memory modules. The one or more memory modules include the trailer brake control parameter. The machine readable instructions, when executed by the one or more processors, cause the system to receive an image including a trailer, determine a trailer characteristic from the image using image analysis logic stored in the one or more memory modules, and calculate the trailer brake control parameter based on the trailer characteristic.Type: GrantFiled: May 28, 2014Date of Patent: September 13, 2016Assignee: Toyota Motor Engineering & Manufacturing North America, Inc.Inventors: Kenan Kurtovic, Chelsea R. White, Nicholas S. Sitarski
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Patent number: 9043107Abstract: 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: GrantFiled: March 13, 2013Date of Patent: May 26, 2015Assignee: Volvo Car CorporationInventors: Mohammad Ali, Mattias Bengtsson, Per Landfors
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Patent number: 9037378Abstract: Disclosed is a braking pressure threshold setting method of a brake traction control system. The method includes steps of: determining whether a slip occurs in a driving wheel; initiating a BTCS control when the slip occurs in the driving wheel; determining whether instability occurs in a high-frictional driving wheel; cumulatively calculating a braking pressure applied to the low-frictional driving wheel; comparing the cumulatively calculated braking pressure value and a pre-set braking pressure threshold of the low-frictional driving wheel; and, when the cumulatively calculated braking pressure value exceeds the pre-set braking pressure threshold of the low-frictional driving wheel, setting the braking pressure applied to the low-frictional driving wheel when the slip occurs in the high-frictional driving wheel, as the threshold.Type: GrantFiled: June 18, 2014Date of Patent: May 19, 2015Assignee: MANDO CORPORATIONInventor: Jung Wan Kim
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Publication number: 20150134220Abstract: Disclosed is a braking pressure threshold setting method of a brake traction control system. The method includes steps of: determining whether a slip occurs in a driving wheel; initiating a BTCS control when the slip occurs in the driving wheel; determining whether instability occurs in a high-frictional driving wheel; cumulatively calculating a braking pressure applied to the low-frictional driving wheel; comparing the cumulatively calculated braking pressure value and a pre-set braking pressure threshold of the low-frictional driving wheel; and, when the cumulatively calculated braking pressure value exceeds the pre-set braking pressure threshold of the low-frictional driving wheel, setting the braking pressure applied to the low-frictional driving wheel when the slip occurs in the high-frictional driving wheel, as the threshold.Type: ApplicationFiled: June 18, 2014Publication date: May 14, 2015Inventor: Jung Wan KIM
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Patent number: 9026332Abstract: 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: GrantFiled: January 12, 2010Date of Patent: May 5, 2015Assignee: Messier-Bugatti-DowtyInventor: Dominique Onfroy
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Patent number: 9020691Abstract: The present disclosure provides a hydraulic brake system for a motor vehicle and a method for the detection of a fault condition of the hydraulic brake system. An electronic control device determines at least one pressure value of the brake fluid of the brake system and at least one volume value of the brake master cylinder associated with the pressure value during an operation of a brake master cylinder. The electronic control device compares the determined pressure value and volume value with at least one pair of pressure-volume reference values for the detection of a fault condition of the brake system, wherein at least two different fault conditions of the brake system can be differentiated based on the comparison.Type: GrantFiled: April 17, 2014Date of Patent: April 28, 2015Assignee: Ford Global Technologies, LLCInventors: Thomas Svensson, Rudolf Daniels
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Patent number: 9020725Abstract: A brake control system and method for motor vehicles is provided with an electronic control unit, by which, when the motor vehicle is stationary, a parking brake function can be activated manually or automatically. Its deactivation occurs upon reaching a predefined release condition. In the presence of a release condition the brake pressure, which was built up for the parking brake function, is released in a time offset manner at least in relation to the axles of the vehicle by way of the control unit.Type: GrantFiled: February 7, 2008Date of Patent: April 28, 2015Assignee: Bayerische Motoren Werke AktiengesellschaftInventor: Guenther Sokoll
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Patent number: 9002610Abstract: 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: GrantFiled: December 9, 2011Date of Patent: April 7, 2015Assignee: Bendix Commercial Vehicle Systems, LLCInventors: Charles E. Eberling, James M. Hamar, Travis G. Ramler, John V. Ripley
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Patent number: 8989969Abstract: 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.Type: GrantFiled: March 12, 2013Date of Patent: March 24, 2015Assignee: Komatsu Ltd.Inventors: Koji Uematsu, Kazuhiro Hatake
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Patent number: 8977463Abstract: 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: GrantFiled: March 15, 2013Date of Patent: March 10, 2015Assignee: Advics Co., Ltd.Inventors: Takuya Inoue, Yusuke Takeya, Masato Terasaka
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Patent number: 8958967Abstract: A braking-force control device has a brake control function for performing brake control on a front outside wheel when a vehicle is detected to be in an oversteer condition during a turning operation and for performing brake control on a rear inside wheel when the vehicle is detected to be in an understeer condition during a turning operation. For preventing the oversteer condition, a command for reducing the engine torque is output. On the other hand, for preventing the understeer condition, the engine torque is limited in accordance with a permissible engine torque value that is calculated on the basis of a road-surface friction coefficient, and ground loads and lateral tire forces of individual wheels. If it is detected that engine braking is in operation, the engine torque is adjusted to substantially zero.Type: GrantFiled: February 25, 2008Date of Patent: February 17, 2015Assignee: Fuji Jukogyo Kabushiki KaishaInventors: Koji Matsuno, Takeshi Yoneda, Masato Igarashi, Yosuke Morokuma
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Patent number: 8935062Abstract: 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: GrantFiled: March 28, 2011Date of Patent: January 13, 2015Assignee: Aisin AW Co., Ltd.Inventors: Nobuaki Inagaki, Hiroya Ueno, Shigekazu Hase, Nobuhiro Iwai, Hiroshi Tsutsui
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Patent number: 8930114Abstract: Disclosed is an antilock braking system for trailers equipped with electric brakes. A control module captures wheel speed data, analyzes it, and determines if wheel slip is occurring. Braking signal to the trailer wheels is reduced using pulse width modulation techniques to reduce the braking force as necessary to eliminate wheel slip. A particular system uses a central microprocessor, two hall-effect speed sensors, and three solid state relays for isolation and control. The ABS works in conjunction with an existing trailer brake controller installed in the tow vehicle.Type: GrantFiled: February 17, 2009Date of Patent: January 6, 2015Inventor: Brian Reid
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Patent number: 8924120Abstract: 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: GrantFiled: June 6, 2009Date of Patent: December 30, 2014Assignee: Ford Global Technologies, LLCInventor: William Paul Perkins
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Patent number: 8918263Abstract: A disclosed power machine has a power source with a rotational output that drives a first axle assembly with first and second wheels with one of the first and second wheels being a sensed wheel. Wheel speed and rotational speed sensors monitor the rotation speed of the first sensed wheel and the rotational output, respectively. A controller communicates with the wheel speed sensor, the rotational output speed sensor, and a braking system that is operable to brake the first and second wheels. A controller calculates, as a function of the sensed wheel and rotational output speeds, a traction score indicative of whether one of the first wheel and second wheel is slipping and signals to the braking system to brake the first wheel when the traction score indicates that the first wheel is slipping and brake the second wheel when the traction score indicates that the second wheel is slipping.Type: GrantFiled: March 14, 2013Date of Patent: December 23, 2014Assignee: Clark Equipment CompanyInventors: Kevin Joseph Zent, Matthew James Kaldor
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Patent number: 8903618Abstract: A method and system for providing braking assistance in a motor vehicle after an initial collision involves detecting an initial collision, pre-charging a brake system, detecting an intent to brake on the part of a driver, and providing assistance to a braking process by means of a braking assistance system on the basis of the detection of the initial collision and the detection of intent to brake on the part of the driver.Type: GrantFiled: June 30, 2011Date of Patent: December 2, 2014Assignee: Ford Global TechnologiesInventors: Jianbo Lu, Roland Schaefer, Peter W. A. Zegelaar, Gilberto Burgio, Monika Derflinger, Otto Hofmann
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Patent number: 8886434Abstract: A method of stabilizing a vehicle is provided. The vehicle is travelling at a forward speed and a lateral speed, and comprises a lateral acceleration sensor, a yaw sensor adapted to detect an actual yaw rate of the vehicle around a central axis, a steering mechanism adapted to steer the vehicle by a steered yaw rate, and an electronic stability control system.Type: GrantFiled: February 4, 2009Date of Patent: November 11, 2014Assignee: GM Global Technology Operations LLCInventors: Kevin A. O'Dea, Flavio Nardi, Jihan Ryu
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Patent number: 8880317Abstract: A method is provided that includes determining a state of a vehicle ignition switch; determining a state of the vehicle, wherein the vehicle state including at least one of whether the vehicle is in a torque producing mode, whether the vehicle is moving, and whether the vehicle brake system is engaged; and, controlling the vacuum pump in response to the vehicle state and the ignition switch state.Type: GrantFiled: December 27, 2012Date of Patent: November 4, 2014Assignee: Ford Global Technolies, LLCInventors: Daniel A. Gabor, Ryan Skaff
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Publication number: 20140324316Abstract: A vehicle brake system and a method of control. A friction brake torque and a secondary brake torque may be applied with a friction and secondary brakes, respectively, under various operating conditions, such as when a brake torque command is less than a threshold brake torque command.Type: ApplicationFiled: February 24, 2014Publication date: October 30, 2014Applicant: ArvinMeritor Technology, LLCInventors: Yixin Yao, Jonathan L. Honig, John Ashley Peterson
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Publication number: 20140277985Abstract: A disclosed power machine has a power source with a rotational output that drives a first axle assembly with first and second wheels with one of the first and second wheels being a sensed wheel. Wheel speed and rotational speed sensors monitor the rotation speed of the first sensed wheel and the rotational output, respectively. A controller communicates with the wheel speed sensor, the rotational output speed sensor, and a braking system that is operable to brake the first and second wheels. A controller calculates, as a function of the sensed wheel and rotational output speeds, a traction score indicative of whether one of the first wheel and second wheel is slipping and signals to the braking system to brake the first wheel when the traction score indicates that the first wheel is slipping and brake the second wheel when the traction score indicates that the second wheel is slipping.Type: ApplicationFiled: March 14, 2013Publication date: September 18, 2014Applicant: CLARK EQUIPMENT COMPANYInventors: Kevin Joseph Zent, Matthew James Kaldor
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Patent number: 8836256Abstract: A drive system has a switched reluctance motor (SR motor) and a control system configured to determine an estimated total torque of SR motor as a function of the phase voltages and phase currents of the phases of the SR motor.Type: GrantFiled: July 12, 2012Date of Patent: September 16, 2014Assignee: Deere & CompanyInventors: Zimin W. Vilar, Chris J. Tremel
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Patent number: 8831854Abstract: A system mitigates shimmy of a wheel of a vehicle. The wheel is rotatable about an axis and is steerable by varying a steering angle of the wheel about a steering axis. The system includes a shimmy detection device that detects whether an oscillation/shimmy of the steering angle of the wheel occurs. The system also includes a brake that applies a braking load to decelerate rotation of the wheel about the axis. Furthermore, the system includes a controller that controls the brake to selectively apply the braking load to reduce the oscillation/shimmy of the steering angle of the wheel.Type: GrantFiled: August 16, 2010Date of Patent: September 9, 2014Assignee: Chrysler Group LLCInventors: Douglas W. Killian, Amanda J. French, Loren M. Trotter
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Patent number: 8831850Abstract: 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.Type: GrantFiled: March 31, 2010Date of Patent: September 9, 2014Assignee: Bosch CorporationInventor: Shunsaku Ono
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Patent number: 8825334Abstract: A vehicle behavior control apparatus is equipped with a slip angle detector that detects a slip angle of a vehicle, a control amount calculation portion that calculates a control amount from the slip angle detected by the slip angle detector, a derivative of the slip angle, and a second order derivative of the slip angle, and a control portion that executes a behavior control for the vehicle based on the calculated control amount.Type: GrantFiled: June 22, 2009Date of Patent: September 2, 2014Assignee: Toyota Jidosha Kabushiki KaishaInventor: Ryochi Watanabe
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Patent number: 8825333Abstract: Control to inhibit a slip of a wheel by controlling braking/driving force generated at the wheel is performed when a slip ratio of the wheel of a vehicle according to a running state of the vehicle becomes larger than a slip ratio threshold value set in advance or when a ratio between wheel acceleration of the wheel and a vehicle speed of the vehicle according to the running state of the vehicle becomes larger than a ratio threshold value. Therefore, it is possible to improve control accuracy when controlling a slip state of the wheel by decreasing an effect of operation by a driver and a road surface and the like, for example.Type: GrantFiled: March 2, 2010Date of Patent: September 2, 2014Assignee: Toyota Jidosha Kabushiki KaishaInventor: Ryosuke Okubo
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Patent number: 8798888Abstract: A control unit for a driving assistance of a vehicle includes a data interface for querying sensors for detecting surroundings data of the vehicle, a data interface for querying a steering angle of the vehicle, an arithmetic unit for ascertaining driving instructions based on the surroundings data of the vehicle transmitted by the sensors, a data interface for outputting the driving instructions, the driving instructions including at least one instruction to perform a steering of the vehicle at a standstill, and an interface for activating a braking system of the vehicle in such a way that the vehicle is braked during the steering performed at a standstill until a predefined steering angle is reached.Type: GrantFiled: May 9, 2007Date of Patent: August 5, 2014Assignee: Robert Bosch GmbHInventor: Peter Braegas
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Publication number: 20140200787Abstract: A vehicle dynamics control device includes a control unit that executes braking/driving torque control based upon vehicle information that includes operation input information and vehicle dynamics information. The operation input information includes a lateral motion operation index pertaining to a lateral motion operation executed to generate a lateral motion in the vehicle; the vehicle dynamics information includes a longitudinal acceleration generated in the vehicle and a lateral motion index indicating a lateral motion occurring in the vehicle; and the control unit determines a handling assurance acceleration limit with a maximum longitudinal acceleration value that assumes a substantially linear proportional relationship with the lateral motion operation index and the lateral motion index over a range in which the lateral motion operation index assumes a value equal to or less than a predetermined value or the lateral motion index assumes a value equal to or less than a predetermined value.Type: ApplicationFiled: March 18, 2014Publication date: July 17, 2014Applicant: Hitachi, Ltd.Inventors: Junya TAKAHASHI, Makoto YAMAKADO, Atsushi YOKOYAMA, Shinjiro SAITO
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Patent number: 8781703Abstract: An system for controlling vehicle movement includes a brake assembly configured to selectively resist movement of the vehicle. A controller selectively controls a brake force applied by the brake assembly. The controller is configured to determine a drive torque condition when the vehicle is stationary on an inclined surface. The controller selectively controls a rate of automatically reducing the brake force dependent on the determined drive torque condition to allow the vehicle to accelerate.Type: GrantFiled: September 26, 2012Date of Patent: July 15, 2014Assignee: Jaguar Land Rover LimitedInventors: Simon Owen, Karl Richards
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Patent number: 8781701Abstract: In a vehicular brake-by-wire braking system, during a four wheel simultaneous control mode when regeneration cooperative braking is implemented, a pair of electromagnetic isolation control valves and one of normally closed electromagnetic pressure relief valves corresponding to regeneration side left and right wheel brakes and normally closed electromagnetic pressure relief valves corresponding to non-regeneration side left and right wheel brakes are caused to operate to open and close, while the other of the normally closed electromagnetic pressure relief valves corresponding to the regeneration side left and right wheel brakes and the normally closed electromagnetic pressure relief valves corresponding to the non-regeneration side left and right wheel brakes are put in de-energized states in which the valves concerned are kept closed, and all normally open electromagnetic pressure supply valves are put in de-energized states in which the valves concerned are kept opened.Type: GrantFiled: March 14, 2008Date of Patent: July 15, 2014Assignees: Honda Motor Co., Ltd., Nissin Kogyo Co., Ltd.Inventors: Yasushi Aoki, Jiro Suzuki, Kouji Sakai
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Publication number: 20140195118Abstract: A vehicle control device is provided with an adjusting device and a control device. The adjusting device is capable of individually adjusting a rotary phase of each wheel of a vehicle. The control device is capable of executing control to individually adjust the rotary phase of each wheel by controlling the adjusting device based on a correlation between the rotary phase of the wheel and hydroplaning characteristics, which indicates resistance to occurrence of a hydroplaning phenomenon, when the hydroplaning phenomenon occurs in the vehicle. Therefore, the vehicle control device has an effect of stabilizing behavior of the vehicle when the hydroplaning phenomenon occurs.Type: ApplicationFiled: March 27, 2012Publication date: July 10, 2014Applicant: Toyota Jidosha Kabushiki KaishaInventor: Ryosuke Okubo
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Patent number: 8774990Abstract: A method for demanding safety reactions for a rail vehicle having a plurality of appliances each able to demand a safety reaction when required, namely a braking process or a traction inhibit or both for the rail vehicle, includes: a) identification of a state in which one of the safety reactions should be carried out by one of the appliances, b) demanding the safety reaction by the appliance through a data bus, and c) feeding back information to the demanding appliance that the safety reaction has been carried out or intervening in a safety loop to initiate the desired safety reaction, if the safety reaction is not carried out.Type: GrantFiled: October 29, 2010Date of Patent: July 8, 2014Assignee: Siemens AktiengesellschaftInventors: Wilhelm Burg, Norbert Werkmeister
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Patent number: 8768594Abstract: A method of controlling travel of a vehicle equipped with an antilock braking system, including the steps of determining potential for one or more wheels to lift off the ground, deactivating the system in respect of the wheels with the lift off potential so the speed of these wheels is not taken into consideration when determining if anti-lock braking is required, applying a low-level test braking force to one or more of the wheels that has the lift off potential, monitoring the speed of the one or more wheels, and if the test braking force causes the wheel speed to fall below a predetermined percentage of the vehicle speed, triggering a stability alarm signal and/or applying a controlled braking force to reduce the vehicle speed.Type: GrantFiled: April 30, 2010Date of Patent: July 1, 2014Assignee: Haldex Brake Products Ltd.Inventors: Dudley Harrison, James Crawley, Robin Sayce-Jones
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Patent number: 8768593Abstract: 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.Type: GrantFiled: November 9, 2012Date of Patent: July 1, 2014Inventors: Timothy Warren Brown, Ajith Kuttannair Kumar, Henry Todd Young
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Patent number: 8768595Abstract: A vehicle braking force control device which, at a normal time, performs antilock brake control when the slip ratio of a wheel has become equal to or greater than a predetermined threshold. The control device acquires from the engine control unit an accelerator pedal position signal corresponding to an accelerator pedal position, a clutch connection signal corresponding to a state of connection of a clutch, and a power transmission signal corresponding to a state of power transmission of a transmission. When engine braking is large on the basis of the accelerator pedal position signal, the clutch connection signal, and the power transmission signal, the vehicle braking force control device changes the predetermined threshold value to an offset threshold value that makes it harder to perform the antilock brake control than at the normal time.Type: GrantFiled: September 3, 2009Date of Patent: July 1, 2014Assignee: Bosch CorporationInventors: Takahiro Ogawa, Kazuhiro Yamada
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Patent number: 8762038Abstract: A vehicle has a drive unit driving wheels of a vehicle axle and braking the vehicle via a drive train in drag mode, an electronic control unit measuring actual wheel rotational speeds of the wheels, and a brake booster for reducing the actuating force at the brake pedal. A test unit is assigned to the electronic control unit and performs a plausibility check of the actual wheel rotational speeds in drag mode, wherein the test unit activates during the plausibility check the vehicle brake of one of the vehicle wheels and detects, from the rotational speed behavior of the wheel with a non-activated vehicle brake, whether the measured actual wheel rotational speeds correlate with the actual vehicle speed. A brake booster can be actuated by the test unit during the plausibility check in order to activate the vehicle brake.Type: GrantFiled: September 30, 2011Date of Patent: June 24, 2014Assignee: Audi AGInventor: Thomas Theel
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Patent number: 8751125Abstract: A vehicle control apparatus includes an accelerator-manipulated-amount detecting section configured to detect a manipulated amount of accelerator; a braking-force generating section configured to generate a braking force of the vehicle; a driving-force generating section configured to generate a driving force of the vehicle; a control unit including a vehicle-body speed calculating section configured to calculate an actual vehicle-body speed. The control unit is configured to perform a normal control mode which generates a driving force corresponding to the accelerator manipulated amount, and to perform a speed control mode which calculates a target vehicle-body speed based on the accelerator manipulated amount and which controls the braking-force generating section and the driving-force generating section so as to bring the actual vehicle-body speed closer to the target vehicle-body speed.Type: GrantFiled: September 7, 2010Date of Patent: June 10, 2014Assignee: Hitachi Automotive Systems, Ltd.Inventor: Kazunori Ozaki
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Patent number: 8738260Abstract: A brake control system includes: a friction brake unit for generating a friction braking force; a regenerative brake unit for generating a regenerative braking force; and a control unit for controlling the regenerative and friction brake units based on a regenerative target value and a friction target value defined based on a target deceleration, and for controlling a braking force by selecting one of a plurality of control modes including both a regeneration permission mode in which a total braking force is generated by the regenerative and friction braking forces, and a regeneration prohibition mode in which the target deceleration is generated by the friction braking force. In the permission mode, the control unit generates the total force by providing a delay, while in the prohibition mode, the control unit provides a delay smaller than the above delay to the friction braking force or does not provide a delay.Type: GrantFiled: August 7, 2009Date of Patent: May 27, 2014Assignee: Toyota Jidosha Kabushiki KaishaInventors: Tetsuya Miyazaki, Kazunori Nimura
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Patent number: 8738246Abstract: In an apparatus for controlling a CVT that transmits power of an engine to driven wheels with hydraulic clamping pressure supplied from a hydraulic mechanism to clamp the belt from laterally-sided pulleys, it is determined whether the ABS operation of the ABS mechanism (to reduce braking force to be applied to the driven wheels when the driven wheels are locked) is delayed, and set hydraulic clamping pressure is increased when the ABS operation is determined to be delayed, while the set clamping pressure is maintained as it is when the operation of the ABS mechanism is determined to be not delayed.Type: GrantFiled: October 22, 2010Date of Patent: May 27, 2014Assignee: Honda Motor Co., Ltd.Inventors: Yuichiro Takemori, Yuzo Okubo, Masatoshi Noguchi
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Patent number: 8718875Abstract: A vehicle motion control apparatus suppresses strangeness feeling in a driver when a signal from a sensor which detects an operated state quantity of a vehicle and a motional state quantity thereof is abnormal. The vehicle motion control apparatus includes a control unit, and sensors. An actual-state-quantity obtaining unit outputs a vehicle-body actual slip angle and an actual yaw rate to a deviation calculating unit. A reference dynamic-characteristic model calculating unit calculates a vehicle-body reference slip angle and a reference yaw rate using a dynamic-characteristic model and outputs those to the deviation calculating unit. A virtual external-force calculating unit feeds back a virtual external force to the reference dynamic-characteristic model calculating unit based on a deviation output by the deviation calculating unit.Type: GrantFiled: March 4, 2011Date of Patent: May 6, 2014Assignee: Honda Motor Co., Ltd.Inventors: Ryoji Mori, Yuuji Sakaki, Noriaki Suzuki, Teppei Komori
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Patent number: 8712659Abstract: The invention relates to a method for preventing tip-over of a motor vehicle in the lateral direction, in which a finite number of predefined driving states is specified; in which a determination is made as to which of the predefined driving states the vehicle is in instantaneously, the predefined driving state thus determined being dependent on sensor signals and on that predefined driving state in which the vehicle was most recently; and as a function of the predefined driving state instantaneously present, at least one braking intervention is carried out in order to prevent the tip-over.Type: GrantFiled: July 4, 2005Date of Patent: April 29, 2014Assignee: Robert Bosch GmbHInventors: Martin Kieren, Gero Nenninger, Matthew Nimmo, Flavio Nardi, Wadim Napolskich, Andris Samsons
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Patent number: 8700282Abstract: A method and apparatus for controlling a vehicle involves determining if the vehicle is swaying and if the vehicle is swaying, reducing a torque of an engine of the vehicle and/or applying independent braking forces to each wheel of the vehicle. A vehicle for controlling vehicle sway includes an engine, a plurality of wheels, a braking system configured to apply independent braking forces to each wheel, and a controller configured to control the engine and the braking system. The controller is configured to determine a correlation coefficient in accordance with any phase shift occurring between a yaw acceleration signal and a lateral acceleration signal. The correlation coefficient is compared to a threshold value to determine whether the vehicle is swaying. If the vehicle is swaying, the controller causes a torque of the engine to be reduced and/or braking forces to be applied independently to each wheel.Type: GrantFiled: July 28, 2011Date of Patent: April 15, 2014Assignee: Advics Co., Ltd.Inventors: Akitaka Nishio, Kenji Asano, Hisashi Kajita
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Patent number: 8682559Abstract: The application of braking force to drive components that move a vehicle is controlled. As consistent with one or more example embodiments, an integrated circuit chip is located at each of two or more drive components (e.g., wheels) of a vehicle for controlling the application of a braking force to the drive component independently of the application of braking force to other drive components. Each of the integrated circuit chips communicate with one another over a vehicle network, with brake control (e.g., using an algorithm to limit wheel slip) being carried out separately at each drive component.Type: GrantFiled: December 14, 2010Date of Patent: March 25, 2014Assignee: NXP B.V.Inventors: Nils Kolbe, Marcus Prochaska
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Patent number: 8670901Abstract: A brake and steer-by-braking pedal arrangement for tractors includes a right pedal and a left pedal operating synchronously or diachronically; and at least one hydraulic or pneumatic circuit connected to one master cylinder activated by at least one of the pedals. The pedal arrangement also has potentiometers connected electronically to an electronic central control unit and the potentiometers determine the distance between the pedals The electronic central control unit determines, on the basis of data received from the potentiometers, whether or not to activate the steer-by-braking function.Type: GrantFiled: February 11, 2009Date of Patent: March 11, 2014Assignee: CNH America LLCInventors: Maurizio Vescovini, Riccardo Morselli
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Patent number: 8666626Abstract: A turning control device for a vehicle which generates a yaw moment in the body of a vehicle includes: a steering wheel turning amount detection device which detects a steering wheel turning amount of the vehicle; a vehicle speed detection device which detects a vehicle speed of the vehicle; a feedforward control amount calculation unit which calculates a feedforward control amount based on at least the steering wheel turning amount; a braking force control amount calculation unit which determines a braking force control amount based on the feedforward control amount; a braking control device which controls the braking force based on the braking force control amount; and a steering direction determination device which determines whether a steering direction is an incremental steering direction or a returning-steering direction. The feedforward control amount calculation unit includes a feedforward control amount correction unit which corrects the feedforward control amount.Type: GrantFiled: March 4, 2011Date of Patent: March 4, 2014Assignee: Honda Motor Co., Ltd.Inventors: Tomoyuki Futamura, Takeshi Kojima, Kazutaka Ohmura