With Traction Control Patents (Class 303/113.2)
  • Patent number: 10913437
    Abstract: A method for operating a dual-circuit hydraulic brake system of a vehicle having an ABS function to feed back pressure medium from low-pressure reservoirs.
    Type: Grant
    Filed: August 1, 2017
    Date of Patent: February 9, 2021
    Inventors: Andreas Neu, Michael Hitzel, Michael Jung, Tobias Scheller
  • Patent number: 10875514
    Abstract: A method for operating a dual-circuit hydraulic brake system of a vehicle having an ABS function to feed back pressure medium from low-pressure reservoirs.
    Type: Grant
    Filed: August 1, 2017
    Date of Patent: December 29, 2020
    Inventors: Andreas Neu, Michael Hitzel, Michael Jung, Tobias Scheller
  • Patent number: 10780871
    Abstract: A trailer control valve comprises a valve electronic control port adapted to receive an electronic control signal; a valve pneumatic supply port unrestrictedly fluidly communicating with a first supply of a pneumatic fluid; a valve pneumatic control port normally proportionally fluidly communicating with a second supply of the pneumatic fluid based on a pressure representing a driver brake demand, the first supply of the pneumatic fluid being in an independent pneumatic circuit from the second supply of the pneumatic fluid; and a valve delivery port selectively fluidly communicating with at least one of the valve pneumatic supply port and the valve pneumatic control port based on the electronic control signal, the pressure representing the driver brake demand and a pressure of the first supply of the pneumatic fluid.
    Type: Grant
    Filed: September 26, 2018
    Date of Patent: September 22, 2020
    Assignee: BENDIX COMMERCIAL VEHICLE SYSTEMS LLC
    Inventors: Brian J Riley, Paul C Niglas
  • Patent number: 10688979
    Abstract: A brake system for motor vehicles may have a main brake cylinder with a floating piston arranged therein, which hermetically seals first and second pressure chambers from one another. The first pressure chamber may be hydraulically connected to a first brake circuit, and the second pressure chamber may be hydraulically connected to a second brake circuit. The brake system may further include a pressure means reservoir under atmospheric pressure, wheel brakes, an electrically controllable pressure supply device for pressure build-up and pressure reduction in the wheel brakes, a valve block with a currentless open inlet valve/switching valve for each wheel brake and with at least one outlet valve, wherein each wheel brake can be hydraulically connected via the switching valve associated with it to a pressure chamber of the main brake cylinder.
    Type: Grant
    Filed: December 30, 2015
    Date of Patent: June 23, 2020
    Assignee: IPGATE AG
    Inventors: Heinz Leiber, Thomas Leiber, Christian Köglsperger
  • Patent number: 10525948
    Abstract: The braking system includes a first and a second braking actuators associated with wheels of a respective axle or a respective bogie of a railway vehicle and to which there are connected a first electro-pneumatic control assembly and a second electro-pneumatic control assembly respectively, each comprising a charging solenoid valve and a discharging solenoid valve adapted to cause an increase and a reduction, respectively, of a pneumatic pressure supplied to the corresponding braking actuators, and a control unit arranged to control the electro-pneumatic control assemblies as a function of a target braking pressure, so that the assemblies cause the application of respective pressures to the corresponding braking actuators.
    Type: Grant
    Filed: July 27, 2016
    Date of Patent: January 7, 2020
    Assignee: FAIVELEY TRANSPORT ITALIA S.P.A.
    Inventor: Roberto Tione
  • Patent number: 10464541
    Abstract: A braking system for vehicles comprising a pilot pump provided with a manual actuation means, the pilot pump being fluidically connected to a hydraulic actuator device in turn operatively connected to a braking device associated with a wheel of said vehicle, wherein the hydraulic actuator device delimits a first and a second actuation chamber fluidically separated by a movable septum along an axial direction X-X, the first actuation chamber containing fluid pressurized by the pilot pump, the second actuation chamber being filled with fluid under pressure and being provided with a delivery duct fluidically connected to said braking device.
    Type: Grant
    Filed: July 29, 2016
    Date of Patent: November 5, 2019
    Assignee: Freni Brembo S.p.A.
    Inventors: Roberto Arienti, Andrea Odoni, Carlo Cantoni
  • Patent number: 10449941
    Abstract: Provided is a braking device for a vehicle comprising: a first hydraulic pressure generation unit which generates hydraulic pressure corresponding to the volume of a master chambers in the master chambers that change in volume according to the movement of master pistons; a second hydraulic pressure generation unit which is configured so as to be capable of generating a desired hydraulic pressure in a bottoming state in which the forward movement of the master pistons is restricted by a master cylinder; braking force generation units which apply the braking force corresponding to the input hydraulic pressure to wheels of a vehicle; and a braking force control unit which causes the second hydraulic pressure generation unit to generate hydraulic pressure in the bottoming state, and inputs the hydraulic pressure to the braking force generation units.
    Type: Grant
    Filed: April 21, 2016
    Date of Patent: October 22, 2019
    Assignee: ADVICS CO., LTD.
    Inventors: Kazuya Maki, Shintaro Osaki, Masaki Maruyama
  • Patent number: 10246068
    Abstract: A pressure modulator for an ABS system includes a housing that which has a hydraulic inlet and a hydraulic outlet that are interconnected via a hydraulic line; a volume accumulator that increases a volume of the hydraulic line during an activated anti-lock function, a linear drive for opening the volume accumulator and an electronic circuit that controls the linear drive and is disposed in the housing.
    Type: Grant
    Filed: July 7, 2017
    Date of Patent: April 2, 2019
    Assignee: BRAKE FORCE ONE GMBH
    Inventor: Jakob Lauhoff
  • Patent number: 10144404
    Abstract: A vehicle includes a brake pedal, a master cylinder, a braking circuit with a wheel cylinder, and a brake pressure generator with strokable piston. A pedal feel simulator is coupled to the master cylinder through a switchable valve, the simulator providing a reaction force. An isolation valve closes to isolate the braking circuit from the master cylinder and the simulator circuit. A controller is programmed to connect the simulator circuit with an outlet of the brake pressure generator, and to stroke and retract the piston at a designated diagnostic time. The controller observes a pressure decrease as the piston retracts and checks whether the pressure-decrease to piston-retraction relationship is within a predetermined acceptable range for continued operation of a brake-by-wire mode in which the master cylinder is coupled to the simulator circuit and decoupled from the braking circuit.
    Type: Grant
    Filed: December 8, 2016
    Date of Patent: December 4, 2018
    Assignee: Robert Bosch GmbH
    Inventors: Rosalin Irwan, Quingyuan Li, Wenguang Zhou
  • Patent number: 10099668
    Abstract: A method is described for operating a vehicle, including the following steps: determining a respective traction of the vehicle wheels; determining which of the respective tractions of the vehicle wheels per axle of the vehicle is the highest traction; determining which of the respective highest tractions per axle is the lowest traction; controlling a admission pressure-generating device as a function of the determined lowest traction of the respective highest tractions per axle such that the admission pressure-generating device regulates a brake pressure in a single-channel brake circuit for the vehicle wheels as a function of the determined lowest traction such that the vehicle is decelerated according to the regulated brake pressure. Also described are a corresponding device, a corresponding system, and a computer program product.
    Type: Grant
    Filed: June 16, 2015
    Date of Patent: October 16, 2018
    Assignee: ROBERT BOSCH GMBH
    Inventors: Jochen Feinauer, Alfred Strehle, Markus Mengelkamp
  • Patent number: 10046749
    Abstract: A vehicle braking system includes a brake pedal, master cylinder, a braking circuit with a wheel cylinder, and a brake pressure generator. A pedal feel simulator is coupled to the master cylinder output side through a switchable valve, the pedal feel simulator providing a reaction force. An isolation valve closes to isolate the braking circuit from the master cylinder and the simulator circuit. A primary pressure sensor generates a braking request signal responsive to the brake pedal. A controller activates the brake pressure generator to apply a braking force to the wheel cylinder based on the braking request signal. The controller identifies an abnormal value from the primary pressure sensor and couples the pedal feel simulator with a secondary pressure sensor within the braking circuit to determine whether the abnormal value indicates a primary pressure sensor malfunction or a malfunction of the pedal feel simulator or the switchable simulator valve.
    Type: Grant
    Filed: December 8, 2016
    Date of Patent: August 14, 2018
    Assignee: Robert Bosch GmbH
    Inventors: Rosalin Irwan, Quingyuan Li, Wenguang Zhou
  • Patent number: 10017168
    Abstract: In one embodiment of the brake system, the connection of the master cylinder and the slave cylinder to the wheel brakes can be switched by the first switching valve and the second switching valve, and the communication with the slave cylinder can be cut off by the first cutoff valve and the second cutoff valve. This enables the fluid pressures which are applied to the wheel brakes to be put in the various states without having a complex configuration, thereby making it possible to control the fluid pressures with good efficiency in such a way as to match suitably the conditions of the brake system and the conditions of the vehicle.
    Type: Grant
    Filed: February 10, 2016
    Date of Patent: July 10, 2018
    Assignee: AUTOLIV NISSIN BRAKE SYSTEMS JAPAN CO., LTD.
    Inventors: Yasushi Aoki, Hiroaki Tokoi, Nobuyuki Kobayashi
  • Patent number: 9975532
    Abstract: Provided is a master cylinder apparatus with a reduced size enabled by simplifying the fluid passageway configuration. A master cylinder apparatus which includes a base member containing a fluid passageway for brake fluid and to which an operation of a brake operator is inputted is provided with: a master cylinder installed on the base member to generate a fluid pressure based on an input produced by operating the brake operator; and at least two solenoid valves attached to one side of the base member to open or close the fluid passageway. The two solenoid valves are disposed symmetrically with respect to a central axis along the axial direction of the master cylinder as viewed from a direction perpendicular to the one side of the base member.
    Type: Grant
    Filed: March 29, 2013
    Date of Patent: May 22, 2018
    Assignees: Autoliv Nissin Brake Systems Japan Co., Ltd., Honda Motor Co., Ltd.
    Inventors: Yoshiteru Matsunaga, Motoyasu Nakamura, Kazuaki Murayama
  • Patent number: 9963131
    Abstract: Two electric brake devices are mounted to respective wheels of a vehicle and each include an electric motor. If fluctuations in braking force occurs in one of the two electric brake devices, a control device calculates operating quantities of the respective electric brake devices based on the deviation between a command value of the sum of the braking forces of the electric brake devices and the sum of the feedback values of the braking forces of the electric brake devices, and causes both electric control devices to perform compensation operations for compensating for the braking force fluctuations while keeping constant the sum of the respective braking forces. This makes it possible to effectively reduce the braking force fluctuations even if the operating amplitudes of the individual electric brake devices are small.
    Type: Grant
    Filed: May 21, 2014
    Date of Patent: May 8, 2018
    Assignee: NTN CORPORATION
    Inventor: Yui Masuda
  • Patent number: 9938981
    Abstract: The invention relates to a compressor circuit for a pneumatic control device of a motor vehicle, including: a compressor, and a pressure regulator, the pressure regulator being arranged between an input side of the compressor and the pneumatic control device, wherein the pressure regulator is designed to measure an upstream pressure of air from the pneumatic control device present on its side facing the pneumatic control device and to supply this air at an input pressure to the input side of the compressor, the pressure regulator being designed to control the input pressure on the basis of said measurement.
    Type: Grant
    Filed: October 10, 2012
    Date of Patent: April 10, 2018
    Assignee: Continental Teves AG & Co. oHG
    Inventor: Dierk Hein
  • Patent number: 9937909
    Abstract: A method for operating a brake system in a motor vehicle, having at least one hydraulic circuit that has a hydraulic pump and at least two wheel brakes, at least one actuatable inlet valve being allocated to each wheel brake. The brake system is monitored for a driver's braking request. To acquire the driver's braking request, a first wheel behavior of at least one wheel allocated to one of the wheel brakes is acquired, such that, upon acquiring of an unexpected wheel behavior, the braking intervention is interrupted and a second wheel behavior of the wheel is acquired and compared to the first wheel behavior of the wheel, and the driver's braking request is recognized as a function of the comparison.
    Type: Grant
    Filed: October 29, 2014
    Date of Patent: April 10, 2018
    Assignee: ROBERT BOSCH GMBH
    Inventors: Markus Glaser, Achim Eisele, Matthias Kranich
  • Patent number: 9925964
    Abstract: A vehicle braking unit comprises an operating braking pressure inlet which receives an inlet braking pressure built up by a braking cylinder, and at least one operating brake pressure outlet at which an outlet braking pressure is provided for an operating brake modulator, which is upstream of the operating brake and provides anti-lock functionality. At least one connecting channel hydraulically connects the operating brake pressure inlet to the outlet. Brake fluid is supplied from a storage unit through the brake cylinder, the connecting channel and the operating brake modulator. The braking unit has a brake fluid inlet, through which the brake fluid is received from the storage unit, a brake fluid pump, by which the brake fluid is suctioned through the brake fluid inlet and a supply pressure is built up, and a valve unit that controls the outlet braking pressure and/or a parking brake release pressure by the supply pressure.
    Type: Grant
    Filed: August 10, 2012
    Date of Patent: March 27, 2018
    Assignee: WABCO GMBH
    Inventors: Heiko Claussen, Jurgen Eickhoff, Volker Heinrich, Ralph-Carsten Lulfing, Wolfgang Strache
  • Patent number: 9925971
    Abstract: There is provided a system for estimating or monitoring the temperature of brake fluid in a hydraulic brake mechanism, the system comprising a controller configured for: receiving data related to the temperature of a brake friction element of said hydraulic brake mechanism; and estimating the temperature of said brake fluid based upon said data. Aspects of the invention also relate to brake systems and vehicles comprising such systems, to related methods, and to suitable controllers and software.
    Type: Grant
    Filed: February 18, 2015
    Date of Patent: March 27, 2018
    Assignee: Jaguar Land Rover Limited
    Inventors: Daren Steward, Matthew Wraight
  • Patent number: 9896072
    Abstract: A brake device (10) includes a service brake valve (16) that produces an actuation-dependent pressure at a service brake valve outlet (20) when an operating means (18) is actuated. The brake device (10) includes a brake actuator (40) with a brake actuator inlet (39). The service brake valve outlet (20) is connected to the brake actuator inlet (39) via a pressure connection (14). The pressure connection (14) includes a directional control valve (24) and a check valve (30). The check valve (30) is bypassed in a first valve position of the directional control valve (24) to allow a fluid flow from the brake actuator inlet (39) to the service brake valve outlet (20) and a fluid flow through the check valve (30) from the brake actuator inlet (39) to the service brake valve outlet (20) is largely prevented in a second valve position of the directional control valve (24).
    Type: Grant
    Filed: July 11, 2014
    Date of Patent: February 20, 2018
    Assignee: WABCO GmbH
    Inventor: Gerd Roters
  • Patent number: 9889836
    Abstract: An electromechanical braking device for a braking system including a master brake cylinder including an electric motor, an adjustable output rod, and a gear, the electric motor being connected to the output rod at least via the gear so that a power transmission path is present via which a motor output is at least partially transmittable to the output rod so that the output rod is adjustable, the electromechanical braking device including at least one elastic component situated within the power transmission path which is configured so that the at least one elastic component is not compressible below a control point of the electromechanical braking device, but during the occurrence of pressure peaks in the master brake cylinder which are above the control point of the electromechanical braking device, the at least one elastic component is compressible. Also described is a braking system for a vehicle.
    Type: Grant
    Filed: May 5, 2014
    Date of Patent: February 13, 2018
    Assignee: ROBERT BOSCH GMBH
    Inventors: Dirk Mahnkopf, Andreas Schlichenmaier, Stefan Seitz, Otmar Bussmann, Bertram Foitzik, Thomas Eichhorn
  • Patent number: 9863355
    Abstract: An electromagnetic actuation system includes an actuator having an electrical coil, a magnetic core, and an armature. The system further includes a controllable drive circuit for selectively driving current through the electrical coil. A control module provides an actuator command to the drive circuit effective to drive current through the electrical coil to actuate the armature. The control module includes a magnetic force control module configured to adapt the actuator command to converge magnetic force within the actuator to a preferred force level.
    Type: Grant
    Filed: March 10, 2015
    Date of Patent: January 9, 2018
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Suresh Gopalakrishnan, Thomas Wolfgang Nehl, Chandra S. Namuduri, Avoki M. Omekanda
  • Patent number: 9789862
    Abstract: A braking system, in particular for a motor vehicle, including a braking force device having a brake booster for boosting a braking force and a brake pressure supply device for providing brake pressure with the aid of a brake medium, a braking device which may be acted on by pressure by the brake medium with the aid of the brake pressure supply device, and at least one sensor which is designed to detect a distance differential of a displacement means for the displacement of a volume of the brake medium of the braking force device. The braking force device is designed to ascertain the volume of brake medium to be displaced on the basis of the detected distance differential.
    Type: Grant
    Filed: December 20, 2011
    Date of Patent: October 17, 2017
    Assignee: ROBERT BOSCH GMBH
    Inventor: Jochen Mayer
  • Patent number: 9718450
    Abstract: A control device for a vehicle brake system, having a control device/arrangement by which a closing signal is outputtable to an isolation valve via which a first brake circuit is hydraulically connected to a main brake cylinder, and at least one first control signal is outputtable to at least one first hydraulic component, so that a first actual brake pressure in the first brake circuit can be varied, an existing functional impairment of the at least one first hydraulic component and/or of at least one further brake system component being determinable, or a warning signal being receivable, and, if warranted, a closing signal being outputtable to a changeover valve of a second brake circuit, and, after or simultaneously with an outputting of the closing signal to the changeover valve, an opening signal being outputtable to the isolation valve. Also described is a related method for operating the vehicle brake system.
    Type: Grant
    Filed: September 5, 2013
    Date of Patent: August 1, 2017
    Assignee: Robert Bosch GmbH
    Inventors: Thomas Bruex, Benno Schmieg
  • Patent number: 9714015
    Abstract: A vehicle braking control device includes: an indicated-value-setting unit for setting an indicated current value, which relates to a differential pressure valve provided to a channel between a master cylinder and a wheel cylinder, to a value corresponding to a required differential pressure; and a depressurization-starting differential pressure acquisition unit for acquiring, as a depressurization-starting differential pressure, the differential pressure at the point in time when a pressurizing state for increasing the differential pressure caused by the differential pressure valve transitions to a depressurizing state for reducing the differential pressure caused by the differential pressure valve. The area between the depressurization-starting differential pressure and a boundary differential pressure is set as a depressurization-starting differential pressure area.
    Type: Grant
    Filed: July 31, 2014
    Date of Patent: July 25, 2017
    Assignee: ADVICS CO., LTD.
    Inventor: Hiroki Saito
  • Patent number: 9707940
    Abstract: A hydraulic device of a vehicle braking system includes a storage reservoir configured to store brake fluid. The hydraulic device further includes a pump with a suction side configured to set a brake fluid pressure in at least one associated wheel brake. The hydraulic device also includes a line connection interposed between the storage reservoir and the suction side of the pump. In addition, the hydraulic device includes a high-pressure switching valve arranged in the line connection. The high-pressure switching valve is configured to possess an opening pressure of less than 1 bar. Further, the hydraulic device includes at least one brake circuit, and the at least one brake circuit includes the pump, the line connection, and the high-pressure switching valve.
    Type: Grant
    Filed: October 27, 2015
    Date of Patent: July 18, 2017
    Assignee: Robert Bosch GmbH
    Inventors: Dirk Foerch, Volker Edelmann, Julia Jeschke, Michael Dinerman
  • Patent number: 9663115
    Abstract: A tire state estimation method is provided for estimating normal force, lateral force and longitudinal forces based on CAN-bus accessible sensor inputs, including deploying a normal force estimator generating the normal force estimation from a summation of longitudinal load transfer, lateral load transfer and static normal force using as inputs lateral acceleration, longitudinal acceleration and roll angle derived from the input sensor data; deploying a lateral force estimator estimating lateral force using as inputs measured lateral acceleration, longitudinal acceleration and yaw rate; and deploying a longitudinal force estimator estimating the longitudinal force using as inputs wheel angular speed and drive/brake torque derived from the input sensor data.
    Type: Grant
    Filed: October 9, 2015
    Date of Patent: May 30, 2017
    Assignee: The Goodyear Tire & Rubber Company
    Inventor: Kanwar Bharat Singh
  • Patent number: 9656646
    Abstract: An integrated electro-hydraulic brake system includes a power source unit storing a pressure, discharging oil from a reservoir to an accumulator, and a motor driving the pump; and an integrated hydraulic control device including a master cylinder and generating a hydraulic pressure, a reservoir connected above the master cylinder and storing oil, an in-valve and an out-valve controlling pressure delivered from the accumulator to a wheel cylinder. The power source unit is provided as a separate unit to isolate operating noises, and the integrated hydraulic control device and the power source unit are connected by an external pipe, and the out-valve is provided as a normally open type-solenoid valve that is used at low current ranges, normally maintains an open state in order to reduce heat generation, but is closed when a close signal is received, compared to a normally close type-solenoid valve that normally maintains a close state.
    Type: Grant
    Filed: June 18, 2014
    Date of Patent: May 23, 2017
    Assignee: MANDO CORPORATION
    Inventor: Hyun-Jun Kim
  • Patent number: 9650028
    Abstract: A brake system includes a master cylinder, an electric servo brake, and an electric motor. The electric motor drives a screw that engages a pair of helical gears which are each mounted on a respective shaft. Each shaft further mounts a gear that meshes with a respective gear rack. The electric servo brake includes a body that defines rails which guide the gear racks. A lever is supported on each end by one of the gear racks, and is connected to a support via a pivot point. The support lies flat against a side of a reaction disk that lies against a push rod that actuates the master cylinder.
    Type: Grant
    Filed: May 2, 2014
    Date of Patent: May 16, 2017
    Assignee: Robert Bosch GmbH
    Inventor: Bastien Cagnac
  • Patent number: 9592802
    Abstract: A brake control system of a vehicle, including a first electric motor, a second electric motor, a first piston cylinder and a second piston cylinder. Each piston cylinder includes a hydraulic chamber and a piston, where the position of the piston defines the volume of the hydraulic chamber. The system includes a plurality of wheel cylinders and a hydraulic control unit which includes two sets of electromagnetic valves. Each of electric motors are mechanically connected to the piston of respective piston cylinder via a motion converter that converts rotational motion of the electric motor to linear motion of the piston, thus changing the pressure of the hydraulic chamber. The hydraulic chambers are hydraulically connected with the respective set of the electromagnetic valves, further connecting to corresponding wheel cylinders.
    Type: Grant
    Filed: December 10, 2014
    Date of Patent: March 14, 2017
    Inventors: Weiwen Deng, Nenggen Ding
  • Patent number: 9539992
    Abstract: A method is provided for operating an electromechanical vehicle brake system having an ESP module and at least two brake circuits, each brake circuit comprising high and low pressure switching valves, a low pressure storage device, and two wheel brakes. The method comprises, in advance of a possible breaking procedure and based on a trigger factor, filling the low pressure storage device with an amount of brake fluid at a first pre-pressure. Subsequently, an ESP pump is used to fill the vehicle brake system, including the low pressure storage device, with an adjustable amount of final pre-pressure. All valves are closed when the final pre-pressure is achieved. The method further comprises, during a braking procedure, opening respective inlet valves of the wheel brakes and supplying at least a part of the final pre-pressure to at least one wheel brake of the vehicle brake system.
    Type: Grant
    Filed: June 12, 2015
    Date of Patent: January 10, 2017
    Assignee: FORD GLOBAL TECHNOLOGIES, LLC
    Inventor: Thomas Svensson
  • Patent number: 9527585
    Abstract: In some embodiments, the steering of an aircraft is enhanced by the use of a steering control system. The steering control system may include a steering request unit, a speed measurement unit, a steering control unit, and a steering control device. The steering control system is operable to generate and transmit to a steering control device, a wheel position request based on a steering request and the speed of the aircraft.
    Type: Grant
    Filed: December 11, 2014
    Date of Patent: December 27, 2016
    Assignee: Bell Helicopter Textron Inc.
    Inventor: Brad J. Roberts
  • Patent number: 9499142
    Abstract: Methods for controlling wheel slip of a motor vehicle include braking the wheel by supplying a first measured quantity of brake fluid from a modulation cylinder to a brake device of the wheel, determining the wheel slip of the wheel, and moving a second measured quantity of brake fluid between the modulation cylinder and the brake device. When the wheel slip is too small or too large, a change in a volume of the brake fluid in the modulation cylinder is measured and a change in a measure of a braking effect is determined. The second measured quantity of brake fluid is determined on the basis of the measured change in the volume of the brake fluid in the modulation cylinder and the change in the measure of the braking effect. Braking systems configured to carry out the methods, as well as vehicles including the braking systems, are further contemplated.
    Type: Grant
    Filed: May 15, 2015
    Date of Patent: November 22, 2016
    Assignee: FORD GLOBAL TECHNOLOGIES, LLC
    Inventors: Thomas Svensson, John P. Joyce
  • Patent number: 9499143
    Abstract: A vehicle brake system and method for operating same, having a master brake cylinder, a brake medium reservoir, and a first brake circuit, connected via a reservoir line to the brake reservoir, having at least one first wheel brake cylinder, a first wheel inlet valve associated with the first brake cylinder, a first pump, by which a first brake medium volume is pumpable from the reservoir line through the open first wheel inlet valve into the first brake cylinder, a continuously adjustable first wheel outlet valve, by which a first brake medium displacement from the first cylinder into the brake reservoir is controllable, and a connecting line having a spring-loaded non-return valve, via which a delivery side of the first pump is connected to the brake reservoir, a brake medium displacement from the brake reservoir to the delivery side of the first pump being prevented by the spring-loaded non-return valve.
    Type: Grant
    Filed: January 26, 2015
    Date of Patent: November 22, 2016
    Assignee: Robert Bosch GmbH
    Inventors: Michael Kunz, Stefan Strengert
  • Patent number: 9499149
    Abstract: First main and second hydraulic pressure paths, master cut valves configured to open and close the first and second main hydraulic pressure paths, respectively, a slave cylinder that operates in accordance with an operation amount of a brake operator, a first communication path that communicates from the slave cylinder to the first main hydraulic pressure path, and a second communication path that communicates from the slave cylinder to the second main hydraulic pressure path are provided. The slave cylinder includes a single hydraulic pressure chamber. The slave cylinder communicates with the first and second communication paths through a common flow path connected to the hydraulic pressure chamber. The slave cylinder is configured to be able to increase a pressure on a downstream side of the first or second main hydraulic pressure path. An on-off valve is provided in at least one of the first and second communication paths.
    Type: Grant
    Filed: June 2, 2016
    Date of Patent: November 22, 2016
    Assignee: AUTOLIV NISSON BRAKE SYSTEMS JAPAN CO., LTD.
    Inventors: Nobuyuki Kobayashi, Ichiro Kobayashi, Hiroaki Tokoi
  • Patent number: 9440628
    Abstract: A brake device for a vehicle includes: a cylinder body in which brake oil is compressed; a first piston pressurizing brake oil while moving along the inside of the cylinder body; a connection part having a smaller outer diameter than the first piston, and including one side connected to the first piston and the other side extended to the outside of the cylinder body; a pipe line part connecting the cylinder body and a wheel brake, and transferring the brake oil compressed through the movement of the connection part to the wheel brake; and a valve controlling the flow of the brake oil transferred along the pipe line part.
    Type: Grant
    Filed: November 22, 2013
    Date of Patent: September 13, 2016
    Assignee: Hyundai Mobis Co., Ltd.
    Inventor: Chang Hoe Koo
  • Patent number: 9409555
    Abstract: A brake, system includes a hydraulic brake that supplies a hydraulic pressure to a cylinder provided correspondingly to each wheel mounted on a vehicle, thereby pressing friction members against the wheels and applying a hydraulic braking force; an electric brake that is mounted on at least one wheel from among the wheels and applies a braking force to the wheel by drive of an electric actuator; and a controller that executes control of supply of hydraulic pressure to each wheel cylinder by the hydraulic brake and operation control of the electric brake, regardless of a braking request by a driver, and causes a transition from hydraulic braking force control of all of the wheels to hydraulic braking force control of the wheel on which the electric brake has been mounted, when a speed of the vehicle satisfies a condition during the hydraulic braking force control of all of the wheels.
    Type: Grant
    Filed: March 27, 2014
    Date of Patent: August 9, 2016
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Shinsuke Yamamoto, Hiroshi Omine
  • Patent number: 9381901
    Abstract: First main and second hydraulic pressure paths, master cut valves configured to open and close the first and second main hydraulic pressure paths, respectively, a slave cylinder that operates in accordance with an operation amount of a brake operator, a first communication path that communicates from the slave cylinder to the first main hydraulic pressure path, and a second communication path that communicates from the slave cylinder to the second main hydraulic pressure path are provided. The slave cylinder includes a single hydraulic pressure chamber. The slave cylinder communicates with the first and second communication paths through a common flow path connected to the hydraulic pressure chamber. The slave cylinder is configured to be able to increase a pressure on a downstream side of the first or second main hydraulic pressure path. An on-off valve is provided in at least one of the first and second communication paths.
    Type: Grant
    Filed: December 18, 2014
    Date of Patent: July 5, 2016
    Assignee: NISSIN KOGYO CO., LTD.
    Inventors: Nobuyuki Kobayashi, Ichiro Kobayashi, Hiroaki Tokoi
  • Patent number: 9321444
    Abstract: A plunger assembly for use as a pressure source for a brake system includes a housing having first and second ports. A motor is mounted on the housing for driving an actuator. A piston is connected to the actuator. The piston is slidably mounted within the housing. The piston pressurizes a first chamber when the piston is moving in a first direction to provide fluid out of the first port. The piston pressurizes a second chamber when the piston is moving in a second direction to provide fluid out of the second port.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: April 26, 2016
    Assignee: Kelsey-Hayes Company
    Inventor: Blaise J. Ganzel
  • Patent number: 9193341
    Abstract: A slip-controlled hydraulic vehicle brake system includes a first hydraulic pump configured to draw brake fluid out of wheel brakes or out of a hydraulic accumulator connected to the wheel brakes. The brake system also includes two further hydraulic pumps configured to be connected to a brake master cylinder for a rapid pressure buildup. To pump against a high brake pressure while the vehicle brake system is actuated, only the first hydraulic pump is used, while the other two hydraulic pumps are separated from the brake master cylinder and run “at idle” at the same time. The necessary mechanical driving power of the hydraulic pumps is thereby reduced, and a very rapid pressure buildup is nevertheless possible.
    Type: Grant
    Filed: December 16, 2013
    Date of Patent: November 24, 2015
    Assignee: Robert Bosch GmbH
    Inventor: Andreas Bresser
  • Patent number: 9139185
    Abstract: A method for operating a braking system of a vehicle which is equipped with a plunger device, including the increasing of a brake pressure in at least one brake circuit of the braking system by transferring a brake fluid volume from the plunger device into the at least one brake circuit of the braking system, the method including: comparing an actual pressure variable to a predefined reference pressure variable with regard to an actual pressure present at least in one subsection of the braking system before the brake pressure is increased; and reducing at least a pre-pressure in the braking system prior to transferring the brake fluid volume from the plunger device into the at least one brake circuit if the actual pressure variable exceeds the reference pressure variable. A control unit is also described for a braking system of a vehicle which is equipped with a plunger device.
    Type: Grant
    Filed: October 8, 2012
    Date of Patent: September 22, 2015
    Assignee: ROBERT BOSCH GMBH
    Inventor: Jochen Mayer
  • Patent number: 9108611
    Abstract: Disclosed herein is an electric brake system for a vehicle including a reservoir, an input rod, and a pedal displacement sensor to sense a displacement of a brake pedal. The electric brake system includes a pressure supply unit connected to the reservoir and a hydraulic channel and to output an electrical signal through the pedal displacement sensor, a hydraulic control unit provided with a first circuit and a second circuit, a shut-off valve to control the hydraulic pressure transferred to a wheel cylinder, a switching valve connected to a channel connecting the pressure supply unit to the hydraulic control unit, a compliance unit installed in a channel connected to the shut-off valve and the switching valve and including a compliance chamber, a piston and an elastic member, a simulator connected to the master cylinder to provide reaction force, and an electronic control unit to control the motor and the valves.
    Type: Grant
    Filed: October 31, 2013
    Date of Patent: August 18, 2015
    Assignee: MANDO CORPORATION
    Inventors: I Jin Yang, Seong Ho Choi
  • Patent number: 9102310
    Abstract: The invention relates to an hydraulic unit for a motor vehicle brake system which operates according to the feedback principle, for which purpose a low-pressure accumulator is provided between the outlet valves of the wheel brakes and a pump, and the piston of which low-pressure accumulator, in the basic position, disconnects the hydraulic connection between a pressure medium chamber and a connection leading to the pump such that, in the empty state of the low-pressure accumulator, the wheel brakes are reliably disconnected from the suction side of the pump.
    Type: Grant
    Filed: October 20, 2011
    Date of Patent: August 11, 2015
    Assignee: Continental Teves AG & Co. oHG
    Inventors: Dieter Dinkel, Ronald Kley, Georg Sonnenschein
  • Patent number: 9096206
    Abstract: A brake system for motor vehicles comprising a brake master cylinder which can be activated by means of a brake pedal and to which wheel brakes are connected. The brake system also comprises an electrically controllable pressure-generating device, a pressure-regulating valve arrangement to regulate a wheel brake pressure set at a wheel brake, a first electronic control and regulating unit which controls at least one of the pressure-generating device, the pressure-regulating valve arrangement, and an electrically controllable auxiliary pressure-generating device by means of which the brake master cylinder can be activated by means of which a pressure in an intermediate chamber of the brake master cylinder can be controlled or regulated.
    Type: Grant
    Filed: August 25, 2011
    Date of Patent: August 4, 2015
    Assignee: CONTINENTAL TEVES AG & CO. OHG
    Inventors: Steffen Linkenbach, Stefan Drumm
  • Patent number: 9085289
    Abstract: A method for operating an electrically controllable brake system for a motor vehicle having at least one electrically actuated valve arrangement for setting a pressure difference between a second brake pressure and a first brake pressure, wherein in a first time interval a predetermined first pressure difference is set and an associated first power consumption value of the pump is identified; in a second time interval a predetermined second pressure difference is set and an associated second power consumption value of the pump is identified; a correction value is obtained from the first power consumption value and the second power consumption value; the correction value is taken into account for setting a set-point value for the pressure difference.
    Type: Grant
    Filed: July 25, 2011
    Date of Patent: July 21, 2015
    Assignee: Lucas Automotive GmbH
    Inventors: Josef Knechtges, Frank Heller, Thomas Bach
  • Patent number: 8998349
    Abstract: Disclosed are electronic control brake systems for vehicles which suppress residual frictional force generated due to contact between pads and a disc.
    Type: Grant
    Filed: March 8, 2013
    Date of Patent: April 7, 2015
    Assignee: Mando Corporation
    Inventors: Hee Jun Kim, I Jin Yang
  • Patent number: 8869831
    Abstract: A traction valve is provided for use in combination with a relay valve. The traction valve includes a body configured for connection to a housing of the relay valve and defining inlet, outlet and traction supply ports. A first fluid control valve used for traction control is supported on the body and includes a valve member that alternately permits and prevents fluid communication between the traction supply and outlet ports in the body. The body and the first fluid control valve are configured to receive any of a plurality of interchangeable second fluid control valves between the inlet port in the body and the first fluid control valve. Each of the plurality of interchangeable second fluid control valves is configured to perform a different function such that the traction valve assumes different configurations upon assembly of the various second fluid control valves with the body and the first fluid control valve.
    Type: Grant
    Filed: May 25, 2011
    Date of Patent: October 28, 2014
    Assignee: Bendix Commercial Vehicle Systems LLC
    Inventors: Craig S. Haehn, Chris J. Polmear, Charles E. Ross
  • Patent number: 8870299
    Abstract: A service brake device of a vehicle, including at least one ABS pressure control valve which is controlled for slip-regulated braking by an electronic control unit, has at least one inlet valve and one outlet valve and is arranged upstream of a pressure medium actuated brake cylinder, a pressure medium line which supplies the ABS pressure control valve with pressure medium and into which a pressure controlled by a valve device arranged upstream of the ABS pressure control valve is feedable, wherein the valve device feeds a pressure derived from a reservoir pressure of a pressure medium reservoir into the pressure medium line as a function of an activation by the electronic control unit.
    Type: Grant
    Filed: November 16, 2010
    Date of Patent: October 28, 2014
    Assignee: Knorr-Bremse Systeme Fuer Nutzfahrzeuge GmbH
    Inventors: Gerhard Wieder, Adnan Mustapha, Andreas Ziegler, Frank Schwab, Oliver Jundt, Peter Holobradi
  • Patent number: 8851579
    Abstract: In a BBW type vehicle brake device, first and second fluid paths that are connected to each other are both connected to a slave cylinder with a simple structure that is equipped with a single fluid pressure chamber, thereby enabling wheel cylinders having two lines to be operated and eliminating the need for a complicated tandem type slave cylinder. When the slave cylinder becomes inoperable due to malfunction of the power supply, by opening first and second master cut valves and closing the communication control valve, braking is carried out by means of brake fluid pressure generated by a master cylinder. In this process, since the interconnection between the first and second fluid paths is blocked by closing the communication control valve, even if the wheel cylinder of one of the brake lines suffers from a liquid leakage malfunction, the other remained brake line is enabled to ensure a braking force.
    Type: Grant
    Filed: February 23, 2011
    Date of Patent: October 7, 2014
    Assignee: Honda Motor Co., Ltd.
    Inventors: Naoto Ohkubo, Takashi Nishioka, Arata Inoue, Kunimichi Hatano
  • Patent number: 8831852
    Abstract: In an integrated controller for a vehicle, a main control unit determines whether a road ahead is a split-? road based on captured images obtained by left and right CCD cameras, and, if so, increases a braking intervention distance correction gain for correcting braking intervention distances set by a collision prevention control unit. The collision prevention control unit performs collision prevention control at a brake timing earlier than usual using the braking intervention distances corrected by the correction gain. Furthermore, when the road ahead is determined to be a split-? road, the main control unit decreases a target torque correction gain for correcting a target torque set by an engine control unit to prevent the vehicle from becoming unstable as a result of a yaw moment acting on the vehicle generated by a generated driving force due to a difference in friction coefficient ? between left and right road surfaces.
    Type: Grant
    Filed: September 21, 2011
    Date of Patent: September 9, 2014
    Assignee: Fuji Jukogyo Kabushiki Kaisha
    Inventors: Masayuki Yajima, Tasuku Maruyama
  • Patent number: 8814280
    Abstract: A hydraulic brake system includes a body with cavities, a vacuum brake booster port, a first caliber port and a channel system defined therein. An accumulator is located in a first one of the cavities. A first proportional solenoid valve is located in a second one of the cavities. A traction control valve is located in a third one of the cavities. The channel system is connected to the accumulator, the first proportional solenoid valve and the traction control valve via the first, second and third cavities. The channel system is further connected to the vacuum brake booster port and the first caliber port. The vacuum brake booster port, the accumulator, the first proportional solenoid valve, the traction control valve and the channel system are used together to control brake fluid to exert a first baking force on the first caliber port.
    Type: Grant
    Filed: December 7, 2011
    Date of Patent: August 26, 2014
    Assignee: Chung-Shan Institute of Science and Technology, Armaments, Bureau, Ministry of National Defense
    Inventors: Te-Ming Yeh, Chuen-An Chen, Min-Fang Lo, Che-Pin Chen, Min-Hua Shih