Having Electricity Or Magnetically Operated Structure Patents (Class 60/545)
  • Patent number: 10910137
    Abstract: An electromagnetic positioning system (1), including a valve train adjustment system for combustion engines, including a bistable electromagnetic positioning device (2) having a positioning element (3) for interacting with a positioning partner, the positioning element being adjustable between a retracted position (E) and an extended position (A) along an axis of adjustment (A) and having permanent magnet means (5) at least in sections.
    Type: Grant
    Filed: September 6, 2017
    Date of Patent: February 2, 2021
    Assignee: ETO MAGNETIC GMBH
    Inventors: Jörg Bürssner, Peter Vincon
  • Patent number: 10850718
    Abstract: An electric brake apparatus includes an electronic control unit (ECU) configured to move a power piston to cause a braking hydraulic pressure to be generated in a master cylinder by controlling an electric motor of an electric actuator based on an operation on a brake pedal (an input member position). A characteristic update processing portion of the ECU is configured to update, based on an operation amount of the brake pedal, characteristic data indicating a relationship between a hydraulic value transmitted from the ECU via a vehicle data bus and a movement amount of the power piston controlled based on the input member position, and store the updated characteristic data. The ECU is configured to control the electric actuator based on the updated characteristic data when an automatic brake instruction is input.
    Type: Grant
    Filed: May 26, 2017
    Date of Patent: December 1, 2020
    Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Daisuke Goto, Takuya Usui
  • Patent number: 10814854
    Abstract: The invention relates to an assembly for a vehicle brake system, which comprises at least one brake cylinder and an electromechanical brake booster, having a drive arrangement for driving at least one actuating device designed for actuating a brake cylinder, wherein the drive arrangement has at least one electric motor and a gear mechanism for coupling the electric motor to the at least one actuating device, wherein at least one fastening device is provided for fastening the assembly to a vehicle, said fastening device defining a fastening plane. According to the invention the rotary shaft of the electric motor is arranged perpendicular to the longitudinal axis of the actuating device and at an angle of between 60° and 120° to the fastening plane.
    Type: Grant
    Filed: September 16, 2016
    Date of Patent: October 27, 2020
    Assignees: ZF Active Safety GmbH, ZF Friedrichshafen AG
    Inventors: Kurt Wingender, Martin Hofmann, Boris Koeth, Jose Manuel Calvo Martinez, Jens Sparfeld, Stefan Kammers, Paul Warkentin, Ingo Decker, Klemens Humm, Detlef Baasch
  • Patent number: 10793130
    Abstract: A hydraulic pressure generating device includes a base body having a master cylinder configured to generate a brake hydraulic pressure and a slave cylinder configured to generate a brake hydraulic pressure. The base body is provided with a motor configured as a driving source for the slave cylinder and a control device configured to control the motor. A motor shaft of the motor, a cylinder axis of the master cylinder, and a cylinder axis of the slave cylinder are disposed in parallel with each other. Then a virtual plane including the cylinder axis of the master cylinder is set as a reference plane, a housing of the control device is disposed on one side of the reference plane and the motor is disposed on the other side of the reference plane.
    Type: Grant
    Filed: March 28, 2017
    Date of Patent: October 6, 2020
    Assignee: AUTOLIV NISSIN BRAKE SYSTEMS JAPAN CO., LTD.
    Inventor: Motoyasu Nakamura
  • Patent number: 10696282
    Abstract: An electric booster and master brake cylinder assembly includes a master cylinder housing, a booster housing, a primary piston, and a ball screw assembly. The master cylinder housing defines a piston bore. The booster housing is attached to the master cylinder housing and defines a bore. The primary piston is slidably positioned within the piston bore and has an axially extending end portion that extends into the bore. The ball screw assembly is at least partially disposed within the bore of the booster housing.
    Type: Grant
    Filed: June 28, 2017
    Date of Patent: June 30, 2020
    Assignee: Steering Solutions IP Holding Corporation
    Inventor: Zhenzhou Huang
  • Patent number: 10696283
    Abstract: An electromechanical brake booster for a motor vehicle, at least one support element being fastened on a gear unit housing bottom of the gear unit, which extends along its respective longitudinal axis, a bearing device being situated on the spindle, which supports the spindle on the least one support element in such away that the bearing device is able to guide the spindle, which is set into translatory motion, at a distance from the first support element along the at least one support element. A brake system is also described.
    Type: Grant
    Filed: July 18, 2016
    Date of Patent: June 30, 2020
    Assignee: Robert Bosch GmbH
    Inventors: Willi Nagel, Daniel Weissinger, Giammaria Panunzio, Andre Bollwerk
  • Patent number: 10682996
    Abstract: The electromechanical brake force booster for a vehicle brake system comprises a drive arrangement for driving at least one actuating device which is designed for actuating a brake cylinder. The drive arrangement has at least one electric motor and a gearing for coupling the electric motor to the at least one actuating device. The gearing comprises at least one second spur gear and at least one first spur gear. Furthermore, the gearing has an intermediate gearing stage. The intermediate gearing stage couples the electric motor to the second spur gear and to the first spur gear in torque-transmitting fashion. The intermediate gearing stage drives the second spur gear directly and the first spur gear via at least one intermediate gear.
    Type: Grant
    Filed: September 16, 2016
    Date of Patent: June 16, 2020
    Assignees: ZF Active Safety GmbH, ZF Friedrichshafen AG
    Inventors: Kurt Wingender, Martin Hofmann, Boris Koeth, Jose Manuel Calvo Martinez, Jens Sparfeld, Stefan Kammers, Paul Warkentin, Ingo Decker, Klemens Humm, Detlef Baasch
  • Patent number: 10604133
    Abstract: A brake booster for a brake master cylinder of a motor vehicle, including a drive motor, which is connected/is connectable via a transmission to a pressure piston for the brake master cylinder, the transmission including a rotatable spindle nut having an inner thread, and a rotatably fixed axially displaceable spindle rod having an outer thread, the threads engaging with one another in order to convert a rotational movement of the drive motor into a translational movement of the spindle rod, and the spindle nut including an outer toothing, which is engaged with a toothing of a drive wheel of the transmission. It is provided that the spindle nut is displaceable axially relative to the drive wheel.
    Type: Grant
    Filed: July 13, 2016
    Date of Patent: March 31, 2020
    Assignee: Robert Bosch GmbH
    Inventors: Andreas Deberling, Andreas Ohm, Daniel Weissinger, Markus Baur, Willi Nagel
  • Patent number: 10556576
    Abstract: A brake booster for a brake master cylinder of a motor vehicle includes a drive motor that is connected/connectable by a gear unit to a pressure piston for the brake master cylinder, the gear unit converting a rotational motion of the drive motor into a translational motion of the pressure piston to actuate the brake master cylinder, and the gear unit including a rotatable spindle nut and a non-rotatable spindle rod having intermeshing trapezoidal threads that have have a flank clearance and a tip clearance that are greater than a bottom clearance.
    Type: Grant
    Filed: July 13, 2016
    Date of Patent: February 11, 2020
    Assignee: Robert Bosch GmbH
    Inventors: Andreas Ohm, Andreas Deberling, Daniel Weissinger, Willi Nagel
  • Patent number: 10493967
    Abstract: An actuating device for a vehicle brake system may include a first piston-cylinder unit, the at least one working space of which is to be connected to at least one wheel brake of the vehicle via at least one hydraulic line, an electromechanical drive device and an actuating device, in particular a brake pedal. Methods for operating a vehicle brake system including such an actuating device and for diagnosing various portions of a vehicle brake system (e.g., but not limited to, a feed valve or a travel simulator) are also presented.
    Type: Grant
    Filed: December 21, 2017
    Date of Patent: December 3, 2019
    Assignee: IPGATE AG
    Inventors: Heinz Leiber, Valentin Unterfrauner
  • Patent number: 10493968
    Abstract: A hydraulic pressure generating device includes a base body having a master cylinder configured to generate a brake hydraulic pressure and a slave cylinder configured to generate a brake hydraulic pressure. The base body is provided with a motor configured as a driving source for the slave cylinder and a control device configured to control the motor. A motor shaft of the motor, a cylinder axis of the master cylinder, and a cylinder axis of the slave cylinder are disposed in parallel with each other. Then a virtual plane including the cylinder axis of the master cylinder is set as a reference plane, a housing of the control device is disposed on one side of the reference plane and the motor is disposed on the other side of the reference plane.
    Type: Grant
    Filed: March 28, 2017
    Date of Patent: December 3, 2019
    Assignee: AUTOLIV NISSIN BRAKE SYSTEMS JAPAN CO., LTD.
    Inventor: Motoyasu Nakamura
  • Patent number: 10458497
    Abstract: A braking system is provided. The braking system may comprise a brake stack and an electromechanical actuator mechanically coupled to the brake stack. A first hydraulic chamber may also be mechanically coupled to the brake stack and in fluid communication with a first piston of the electromechanical actuator. A second piston may be in fluid communication with the first hydraulic chamber. The second piston may also be configured to translate towards the brake stack in response to a translation of the first piston.
    Type: Grant
    Filed: June 29, 2015
    Date of Patent: October 29, 2019
    Assignee: GOODRICH CORPORATION
    Inventor: Richard A. Poisson
  • Patent number: 10442417
    Abstract: One embodiment provides a hydraulic pressure generation apparatus. In the hydraulic pressure generation apparatus, a motor attached to a base body. The base body includes: a first cylinder hole having a closed bottom in which a first piston is inserted to thereby form a master cylinder; and a second cylinder hole having a closed bottom in which a second piston is inserted to thereby form a slave cylinder. The first cylinder hole and the second cylinder hole have respective openings in a surface of the base body located on one side thereof. Axial lines of the first cylinder hole, the second cylinder hole and an output shaft of the motor are arranged approximately parallel with each other.
    Type: Grant
    Filed: December 22, 2016
    Date of Patent: October 15, 2019
    Assignee: AUTOLIV NISSIN BRAKE SYSTEMS JAPAN CO., LTD.
    Inventors: Yoshiteru Matsunaga, Kouji Sakai, Nobuyuki Kobayashi
  • Patent number: 10274231
    Abstract: A caloric heat pump system includes a pump is operable to circulate a working fluid through a stage. The pump includes a motor. A cam is coupled to the motor such that the cam is rotatable by the motor. The cam has a non-circular outer profile surface. Each piston of a pair of pistons has a cam follower positioned on the non-circular outer profile surface of the cam.
    Type: Grant
    Filed: July 19, 2016
    Date of Patent: April 30, 2019
    Assignee: Haier US Appliance Solutions, Inc.
    Inventors: Michael Goodman Schroeder, David G. Beers, Brian Michael Schork, Michael Alexander Benedict
  • Patent number: 10239511
    Abstract: One embodiment provides a hydraulic pressure generation apparatus including: a base body; a motor; a reservoir tank; a master cylinder which generates a brake hydraulic pressure by a brake manipulator; and a slave cylinder which generates a brake hydraulic pressure the motor. The base body includes: a first cylinder hole which is a bottomed cylinder hole, and in which the first piston is inserted; a second cylinder hole which is a bottomed cylinder hole, and in which the second piston is inserted; and a supply passage which leads from the reservoir tank to a hydraulic chamber of the slave cylinder. The supply passage is provided with a check valve which permits only inflow of brake fluid from the reservoir tank to a side of the slave cylinder, near a brake fluid discharge port of the second cylinder hole.
    Type: Grant
    Filed: March 28, 2017
    Date of Patent: March 26, 2019
    Assignee: AUTOLIV NISSIN BRAKE SYSTEMS JAPAN CO., LTD.
    Inventor: Yoshiteru Matsunaga
  • Patent number: 10005441
    Abstract: An electric motor is controlled according to the back and forth movement of an input rod, which is caused by brake pedal operation; a primary piston is propelled to generate hydraulic brake pressure in a master cylinder; and the hydraulic brake pressure is fed back to the input rod through an input piston. The input piston is resiliently held by springs with respect to the primary piston. A jump-in clearance is created between the input piston and the input rod by a rearward spring. At the initial stage of braking, hydraulic brake pressure is not transmitted to the input rod due to the jump-in clearance, which provides jump-in characteristics. The jump-in clearance can be set, regardless of the amount of a relative displacement between the primary piston and the input piston, so that the range of adjustment for regenerative braking can be set larger than the jump-in clearance.
    Type: Grant
    Filed: March 31, 2014
    Date of Patent: June 26, 2018
    Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Kunihiro Matsunaga, Mitsuhiro Endo, Satohiro Koi, Naoki Shirakawa, Atsushi Odaira, Takuya Usui, Hiroshi Shigeta
  • Patent number: 9925968
    Abstract: A brake booster assembly is provided. The assembly includes a rack including a plurality of rack teeth extending therefrom and moveable and extending along a first axis. A sensor is coupled with the rack for sensing force and axial displacement of the rack and outputting a signal proportional to the sensed force and the sensed displacement. A planetary gear subassembly is disposed about a second axis transverse to the first axis and is coupled with the rack for moving the rack along the first axis in response to rotation of the planetary gear subassembly about the second axis. A pair of motors are coupled to the planetary gear subassembly for rotating the planetary gear subassembly and moving the rack along the first axis. A controller is electrically connected to the sensor and to the motors for controlling rotation of the planetary gear subassembly in response to the signal from the sensor.
    Type: Grant
    Filed: March 15, 2016
    Date of Patent: March 27, 2018
    Assignee: BEIJINGWEST INDUSTRIES CO., LTD.
    Inventor: Barton Cann
  • Patent number: 9889837
    Abstract: A brake booster assembly is provided. The assembly includes a rack including a plurality of rack teeth extending therefrom and moveable and extending along a first axis. A sensor is coupled with the rack for sensing force and axial displacement of the rack and outputting a signal proportional to the sensed force and the sensed displacement. A planetary gear subassembly is disposed about a second axis transverse to the first axis and is coupled with the rack for moving the rack along the first axis in response to rotation of the planetary gear subassembly about the second axis. A pair of motors are coupled to the planetary gear subassembly for rotating the planetary gear subassembly and moving the rack along the first axis. A controller is electrically connected to the sensor and to the motors for controlling rotation of the planetary gear subassembly in response to the signal from the sensor.
    Type: Grant
    Filed: March 15, 2016
    Date of Patent: February 13, 2018
    Assignee: BEIJINGWEST INDUSTRIES CO., LTD.
    Inventor: Barton Cann
  • Patent number: 9841009
    Abstract: Heat from a safe high energy density fuel, such as aluminum, is used to generate electrical power. In some applications, the fuel may use seawater as an oxidizer. Additionally, the hybrid power system uses a highly efficient and silent thermoacoustic power converter (TAPC) to convert the thermal energy from the oxidation of aluminum to AC electrical energy. The AC electrical energy is converted to DC energy and stored in a battery. In situations demanding low power, the battery can provide power while the fuel combustion process is suspended.
    Type: Grant
    Filed: July 28, 2015
    Date of Patent: December 12, 2017
    Assignee: Northrop Grumman Systems Corporation
    Inventor: Lewis S. Proudfoot
  • Patent number: 9676279
    Abstract: A parallel regeneration brake torque modulation system for an electrified vehicle includes a brake pedal travel sensor adapted to transmit a brake pedal travel sensor signal upon travel of a vehicle brake pedal through at least a portion of a range of motion; and a regenerative braking system adapted to apply regeneration braking torque to a vehicle using the brake pedal travel sensor signal from the brake pedal travel sensor.
    Type: Grant
    Filed: December 8, 2012
    Date of Patent: June 13, 2017
    Assignee: Ford Global Technologies, LLC
    Inventor: John Phillip McCormick
  • Patent number: 9663088
    Abstract: An electric booster including a plunger movable by operation of a brake pedal, an electric motor controlled based on a relative displacement between the plunger and the linear motion member, which is detected by a relative displacement sensor, and a ball and screw mechanism. The linear motion member pushes a piston of a master cylinder through a reaction member, thereby generating a brake force. Part of a reaction force from the master cylinder is fed back to the brake pedal through the reaction member. When a reference position sensor detects that a relative position of the plunger to the linear motion member coincides with a predetermined reference position, a detection value of the relative displacement sensor is stored as a relative displacement reference value, and relative displacement between the plunger and the linear motion member is determined.
    Type: Grant
    Filed: September 21, 2011
    Date of Patent: May 30, 2017
    Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Toshio Takayama, Masaru Sakuma
  • Patent number: 9604619
    Abstract: A brake control apparatus includes a master cylinder configured to generate a brake pressure according to a depressing force of a brake pedal; an electric motor configured to operate the master cylinder; a control board configured to control the electric motor; and a board receiving portion arranged along an outer circumference of the master cylinder. The board receiving portion receives the control board such that a component-mounting surface of the control board faces in an axial direction of the master cylinder.
    Type: Grant
    Filed: February 11, 2014
    Date of Patent: March 28, 2017
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Hirofumi Watanabe, Daisuke Yasukawa, Kazuhiko Nakano
  • Patent number: 9340193
    Abstract: A brake pedal unit for coupling to a brake pedal includes a housing and a pedal simulator housed within a simulation chamber formed in the housing. The pedal simulator includes a spring for providing force feedback. A first piston is mounted in the housing. The first piston is operable to generate brake actuating pressure at a first pressure output. A second piston is mounted in the housing. The first piston is operable to generate brake actuating pressure at a second pressure output. An input piston is connected to operate the pedal simulator during a normal braking mode, and wherein the input piston is coupled to actuate the first and second pistons during a manual push-though mode.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: May 17, 2016
    Assignee: Kelsey-Hayes Company
    Inventor: Blaise J. Ganzel
  • Patent number: 9333952
    Abstract: In a brake-by-wire brake system which includes a motor actuated cylinder configured to produce a brake fluid pressure according to an operating stroke thereof and an electric motor for actuating the motor actuated cylinder, the control mode is normally based on a fluid pressure control, but is switched to a stroke control when the brake pedal is released for the purpose of quickly reducing the operating stroke of the motor actuated cylinder to an initial value. To avoid a sudden increase in the noises of the electric motor at the time of switching from the fluid pressure control to the stroke control, a limit circuit limits electric current supplied to the electric motor when the control mode is switched from the fluid pressure control to the stroke control.
    Type: Grant
    Filed: October 2, 2014
    Date of Patent: May 10, 2016
    Assignee: Honda Motor Co., Ltd.
    Inventors: Soichiro Ueura, Kazuharu Kidera, Takashi Shimada
  • Patent number: 9291175
    Abstract: An electrically actuated booster performs displacement control such that the relative displacement relationship between an input member and an assist member is variable according to the absolute displacement of the input member. A target displacement that makes variable the relative displacement relationship between an input piston and a booster piston is set according to a detection signal from a potentiometer (86), and displacement control is performed so that the relative displacement between the two pistons becomes equal to the target displacement on the basis of a signal from a relative displacement sensor (100) that detects the relative displacement between the two pistons.
    Type: Grant
    Filed: June 28, 2013
    Date of Patent: March 22, 2016
    Assignee: HITACHI, LTD.
    Inventors: Yukio Ohtani, Junichi Ikeda, Kazuhiro Nagai
  • Patent number: 9283943
    Abstract: A brake apparatus, which is configured to generate a hydraulic pressure in a master cylinder, sets a control position of a primary piston. According to a movement of an input piston in response to an operation of a brake pedal, the brake apparatus generates a hydraulic pressure in a primary chamber of the master cylinder by driving the primary piston by an electric motor to supply brake fluid to a brake caliper, thereby exerting a brake effect. The brake apparatus sets a first control position where the primary chamber is out of communication with a reservoir, and a second control position where the primary chamber is in communication with the reservoir as a holding position of the primary piston when no brake is applied. Then, the brake apparatus appropriately switches the holding position of the piston between the first control position and the second control position.
    Type: Grant
    Filed: September 21, 2011
    Date of Patent: March 15, 2016
    Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventor: Masaru Sakuma
  • Patent number: 9227611
    Abstract: A hydraulic vehicle braking system comprises a master cylinder having at least one piston displacably accommodated therein, a mechanical actuator that is coupled, or can be coupled, to a brake pedal for actuating the piston, and an electromechanical actuator. The electromechanical actuator is likewise provided for actuating the piston and can be activated, at least for boosting or generating brake force, when the brake pedal is actuated. Furthermore, a valve arrangement is provided, which has a first valve per wheel brake for selectively uncoupling the wheel brake from the master cylinder, and a second valve for selectively reducing the brake pressure at the wheel brake. The valve arrangement can be controlled at least within the framework of an ABS control mode.
    Type: Grant
    Filed: March 13, 2012
    Date of Patent: January 5, 2016
    Assignee: Lucas Automotive GmbH
    Inventor: Leo Gilles
  • Patent number: 9205824
    Abstract: A motor vehicle brake system and method operable in a brake by wire and in a fallback operating mode. In addition to a first pressure supply unit a second electrically controllable pressure supply unit having at least one intake port and one pressure port, the intake port of which is connected or connectable to one of the pressure chambers and the pressure port of which is connectable or connected to the brake circuit associated with the pressure chamber. The second pressure supply unit is arranged in the hydraulic connection between one of the pressure chambers of the brake master cylinder and the brake circuit associated with the pressure chamber.
    Type: Grant
    Filed: April 16, 2012
    Date of Patent: December 8, 2015
    Assignee: CONTINENTAL TEVES AG & CO. OHG
    Inventors: Hans-Jörg Feigel, Harald Biller
  • Patent number: 9199618
    Abstract: Disclosed is an electrohydraulic brake system for use in vehicles which can be braked by means of generator operation of an electric drive motor. The brake system comprises, inter alia, a brake booster and an electronic control unit which is provided for distributing the braking effect between a generative component or recuperation braking component and a friction braking component. In order to optimize the take-up of pressure medium, in particular during recuperation braking, the brake booster (6, 11, 15) is configured to be electrically actuated by the electronic control unit (10). The boosting force generated by the brake booster (6, 11, 15) is exerted as a function of variables relevant to the brake system.
    Type: Grant
    Filed: December 16, 2009
    Date of Patent: December 1, 2015
    Assignee: CONTINENTAL TEVES AG & CO. OHG
    Inventor: Stefan A. Drumm
  • Patent number: 9180852
    Abstract: An electric booster includes a housing having one end including a coupling surface where the housing is coupled to a master cylinder, and the other end including an attachment surface where the housing is attached to a vehicle. A controller includes a flat plate-like control board, and the control board is disposed so as to be positioned between a first plane including the attachment surface of the housing where the housing is attached to the vehicle, and a second plane including the coupling surface of the housing where the housing is coupled to the master cylinder.
    Type: Grant
    Filed: January 28, 2013
    Date of Patent: November 10, 2015
    Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Daichi Nomura, Takuya Usui, Toshiyuki Ajima, Hidefumi Iwaki, Kazuhiko Nakano, Hirohumi Watanabe
  • Patent number: 9162661
    Abstract: A brake system is described with a master cylinder actuated by a control rod connected to a plunger piston and an actuator piston acting directly on the primary piston. A hydraulic reaction piston is housed in the piston so it can be subjected to the pressure of the primary chamber and to the opposing action of a reaction spring. The plunger piston can push the reaction piston directly to push the master cylinder.
    Type: Grant
    Filed: May 21, 2013
    Date of Patent: October 20, 2015
    Assignee: ROBERT BOSCH GMBH
    Inventors: Philippe Richard, Francois Gaffe, Bastien Cagnac
  • Patent number: 9152607
    Abstract: A utility vehicle comprises a plurality of ground engaging members and a frame supported by the plurality of ground engaging members. The frame includes a front frame portion, a mid-frame portion, and a rear frame portion. The utility vehicle further comprises an attachment supported at the front frame portion. Additionally, the utility vehicle includes an operator area supported by the frame and including an operator seat and an adjacent passenger seat spaced apart from the operator seat. The operator seat and the passenger seat are in a side-by-side arrangement. The utility vehicle also comprises an auxiliary power assembly having an attachment shaft configured to be operably coupled to the attachment. The attachment shaft extends in a generally longitudinal direction of the utility vehicle and projects outwardly from the front frame portion.
    Type: Grant
    Filed: December 21, 2012
    Date of Patent: October 6, 2015
    Assignees: Polaris Industries Inc., Clark Equipment Company
    Inventors: Marcus A Wetterlund, Matthew J Kaldor, Brian P Dehnert
  • Patent number: 9139180
    Abstract: A hydraulic main brake cylinder, preferably having an electro-mechanical brake booster for a brake assembly of a vehicle is disclosed. The main brake cylinder is provided with two pressure rod pistons, preferably nesting within each other, one of which is actuated by muscle power, and the other one is actuated by the brake booster. Furthermore, an energy store is provided, which stores energy when the main brake cylinder is released and then transferred to the main brake cylinder upon the actuation thereof, thus supporting the operation of the main brake cylinder.
    Type: Grant
    Filed: May 27, 2010
    Date of Patent: September 22, 2015
    Assignee: Robert Bosch GmbH
    Inventors: Armin Verhagen, Jochen Mayer, Willi Nagel
  • Patent number: 9120467
    Abstract: Disclosed herein are an electro-hydraulic brake and a control method thereof which provide hydraulic braking force to transfer a stable pedal feel and provide regenerative braking to improve fuel efficiency. The electro-hydraulic brake includes a master cylinder, a housing including a booster chamber and a base chamber, an oil reservoir, a hydraulic control unit connected to the oil reservoir, a simulation unit, and a pedal displacement sensor. The hydraulic control unit includes an accumulator, a pump to absorb oil from the oil reservoir and to discharge the oil to the accumulator, a motor to drive the pump, a normal cut valve, a simulation control valve, two control valves to control the pressure in the booster chamber, pressure sensors to sense the pressures in the base chamber, the accumulator and the booster chamber, and a controller to control the motor and the valves based on pressure information and pedal displacement information.
    Type: Grant
    Filed: January 26, 2012
    Date of Patent: September 1, 2015
    Assignee: MANDO CORPORATION
    Inventor: Yong Suk Hwang
  • Patent number: 9109463
    Abstract: A load supporting structure of an electric booster type brake apparatus, includes: a housing including a rear housing member and a front housing member so as to define a receiving space therein; a ball screw shaft rotatably installed in the receiving space of the housing; a rotor installed at one side of the ball screw shaft so as to transmit torque; a first bearing installed between the rear housing member and one side of the rotor and configured to support a radial direction load due to a hydraulic reaction force; and a second bearing installed between the front housing member and the other side of the rotor and configured to support an axial direction load due to a hydraulic reaction force. Therefore, the number of components and the thickness of the housing are reduced, and therefore weight reduction of the electric booster type brake apparatus may be implemented.
    Type: Grant
    Filed: March 6, 2013
    Date of Patent: August 18, 2015
    Assignee: Hyundai Mobis Co., Ltd.
    Inventor: Sang Mok Lee
  • Patent number: 9108609
    Abstract: In normal braking, the operation of an electric motor is controlled according to the amount of operation of a brake pedal to drive a pressing member through a belt drive mechanism and a ball-screw mechanism, thereby pressing a piston to generate a fluid pressure in a master cylinder to obtain a braking force. A predetermined reaction force is applied to the brake pedal by a reaction force spring of a stroke simulator, and a gap is maintained between the pressing member and a movable member, thereby eliminating an uncomfortable feeling in a brake operation caused by fluid pressure variations in the master cylinder. When the electric motor fails, the movable member abuts against the pressing member and directly presses the piston to maintain the braking function. The rear end of the pressing member is inserted into a guide member and the reaction force spring to reduce the axial size.
    Type: Grant
    Filed: December 8, 2011
    Date of Patent: August 18, 2015
    Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventor: Takuya Usui
  • Patent number: 9051974
    Abstract: A hydrostatic actuator, in particular, a hydrostatic clutch actuator, having a master cylinder including a housing and a piston that is axially displaceable in the housing and applies pressure to a pressure chamber, a gearing mechanism converting a rotary drive into an axial movement, and an electric motor driving the gearing mechanism to rotate and including a stator and a rotor, where the pressure chamber is arranged axially between the piston and the electric motor with respect to an axis of rotation of the electric motor.
    Type: Grant
    Filed: April 26, 2012
    Date of Patent: June 9, 2015
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Matthias Gramann, Markus Kneissler, Julian Botiov
  • Publication number: 20150113976
    Abstract: An actuator device for producing a linear movement, has a hydraulic actuator which includes a first piston element for actuating the actuator and a second piston element for producing the linear movement. The piston elements are assigned respective fluidically coupled working chambers, the volumes of which can be changed by movement of the respective piston element. A piezoelectric actuator is provided for exerting a force on the first piston element.
    Type: Application
    Filed: April 25, 2013
    Publication date: April 30, 2015
    Applicant: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Georg Bachmaier, Gerit Ebelsberger, Reinhard Freitag, Andreas Gödecke, Wolfgang Zöls
  • Patent number: 9016058
    Abstract: The object of the present invention is to provide a vehicle braking force generator capable of detecting a lock failure quickly. A vehicle braking force generator includes a motor cylinder device that generates a brake hydraulic pressure according to an operation amount of a brake pedal, a motor current obtaining unit that obtains a torque current according to an electric motor, a brake hydraulic pressure obtaining unit that obtains a brake hydraulic pressure generated in a cylinder unit, a movement amount obtaining unit that obtains a movement amount of pistons to a compression direction of a brake fluid relative to the cylinder unit, and a determination unit that determines an operation state of the motor cylinder device.
    Type: Grant
    Filed: July 17, 2013
    Date of Patent: April 28, 2015
    Assignee: Honda Motor Co., Ltd.
    Inventors: Yuki Hotani, Yuki Ito, Daisuke Sakamoto
  • Publication number: 20150107241
    Abstract: A hydraulic brake system is configured such that a pressure of a working fluid from a high-pressure-source device is adjusted by electromagnetic pressure-increase and pressure-decrease linear valves and such that a brake device generates a braking force having a magnitude that depends on the pressure adjusted by the linear valves, wherein the following controls are selectively executable, as a control of the energizing currents supplied to the linear valves, a feedback control based on a difference between an actual braking-force index and a target braking-force index; and a feedforward control based on the target braking-force index executed by placing each valve in a valve equilibrium state, wherein, in the feedforward control, an energizing current is supplied to at least one of the two linear valves, the energizing current being larger than that according to a preset relationship between a braking-force index and an energizing current in the valve equilibrium state.
    Type: Application
    Filed: June 20, 2013
    Publication date: April 23, 2015
    Applicants: ADVICS CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Takahiro Okano, Yusuke Kamiya, Kiyohito Takeuchi
  • Patent number: 9010107
    Abstract: An electric motor is controlled based on an operation of a brake pedal to move a primary piston forward through a ball screw mechanism, thereby generating a hydraulic pressure in a master cylinder. At this time, a reaction force from the hydraulic pressure in the master cylinder is fed back to the brake pedal through an input piston. Automatic brake control, which generates the hydraulic pressure by driving the electric motor regardless of whether there is the operation of the brake pedal, is carried out. During the automatic brake control, an actual relative position is compared with a determination threshold value set based on the relative position between the primary piston and the input piston which is generated by a movement of the primary piston, and it is determined that the brake pedal is operated in a case where the relative position is smaller than the determination threshold value.
    Type: Grant
    Filed: September 22, 2011
    Date of Patent: April 21, 2015
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Yukihiko Yamada, Kentaro Ueno, Yusuke Nozawa, Daisuke Kojima, Tohma Yamaguchi
  • Publication number: 20150097054
    Abstract: An electro-hydraulic actuation system for a sprayer comprises a hydraulic system, a hydraulic actuator, an electric actuator and a sprayer. The hydraulic system is for pressurizing a hydraulic fluid. The hydraulic actuator is powered by the hydraulic system. The electric actuator controls actuation of the hydraulic actuator by the hydraulic system. The sprayer is actuated by the hydraulic actuator.
    Type: Application
    Filed: May 9, 2013
    Publication date: April 9, 2015
    Inventors: James C. Schroeder, Christopher A. Lins, Steven R. Kuczenski
  • Patent number: 8997482
    Abstract: Brake system comprising a thrust rod (130) driven by the servobrake (200) and actuating the piston (110) of the master cylinder (100), the servobrake (200) being linked by a hydraulic actuator (270) to the control rod (230) of the brake pedal (PF). The servobrake (200) comprises an actuator piston (220) controlled by an electric motor (265) via a rack drive (260). A simulator chamber (250) delimited by the hydraulic actuator (270) is subdivided by an intermediate piston (240) into a rear volume (V1) and a front volume (V2), respectively delimited by the intermediate piston (240). A duct (L1) links the rear volume (V1) to a duct (L2) linked to the front volume (V2) by a first solenoid valve (EV1) and the duct (L2) to the tank (115) by a second solenoid valve (EV2). The piston (240) is linked to the rod (130) bearing an abutment (132) to be thrust by the actuator piston (220).
    Type: Grant
    Filed: August 30, 2010
    Date of Patent: April 7, 2015
    Assignee: Robert Bosch GmbH
    Inventors: Philippe Richard, François Gaffe, Bastien Cagnac, Chris Anderson, Raynald Sprocq
  • Publication number: 20150075156
    Abstract: Disclosed is a brake control apparatus including a master cylinder that generates a hydraulic braking pressure in response to operation of a brake pedal, an electric motor that drives the master cylinder, a housing in which the master cylinder and the electric motor are assembled, and a control unit adapted to perform drive control of the electric motor. The control unit has a bottom formed at least partially integral with the housing and includes a circuit board mounting thereon drive elements to drive the electric motor. The brake control apparatus includes a heat radiating seat located on an inner surface of the bottom of the control unit at a position apart from the electric motor and closer to the master cylinder than the electric motor and brought into thermal contact with the circuit board so as to radiate heat of the drive elements toward the housing.
    Type: Application
    Filed: August 29, 2014
    Publication date: March 19, 2015
    Inventors: Kazuhiko NAKANO, Hirofumi WATANABE, Daisuke YASUKAWA
  • Patent number: 8978377
    Abstract: A cylinder device is characterized in: that it selectively realizes an operation-force dependent pressurizing state where brake fluid is pressurized by operation force and a high-pressure-source-pressure dependent pressurizing state where brake fluid is pressurized depending on a pressure from a high-pressure-source device; that there are defined an inter-piston chamber in front of an input piston by an insertion of the input piston into a pressurizing piston, an input chamber in the back of a flange of the pressurizing piston at the pressure from the high pressure source device, and an opposing chamber in front of the flange; and that the cylinder device has a mechanism elastically pressurizing an reaction force chamber formed by a communication between the inter-piston and the opposing chambers, and a mechanism switching communication/not-communication state between the reaction chamber and a reservoir.
    Type: Grant
    Filed: August 27, 2010
    Date of Patent: March 17, 2015
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Hiroshi Isono
  • Publication number: 20150059334
    Abstract: Provided is a brake hydraulic device for a vehicle, including: a base body having a hydraulic pressure path for brake fluid formed therein; an electromagnetic valve; an electromagnetic coil; a pressure sensor; and a housing attached to the outer surface of the base body. The housing includes a peripheral wall part and an intermediate wall part partitioning a space inside the peripheral wall part into a front side and a rear side. A plurality of bus bars on the coil side to be electrically connected to the electromagnetic coil, and a plurality of bus bars on the sensor side to be electrically connected to the pressure sensor are embedded in the intermediate wall part. A hierarchy region where the bus bars on the coil side and the bus bars on the sensor side are positioned in a hierarchy state with each other in the front-rear direction is provided.
    Type: Application
    Filed: March 29, 2013
    Publication date: March 5, 2015
    Inventor: Motoyasu Nakamura
  • Patent number: 8959908
    Abstract: Provided is a brake controller which can be made smaller. The brake controller (100) has a hydraulic control mechanism (150), which comprises a master cylinder (250) which generates a hydraulic fluid pressure on the basis of an input piston (182) and a control piston (190) that move when a braking operation is performed, motors (290, 296), and a moving mechanism (200) which moves the aforementioned control piston as the aforementioned motors turn, and a motor control unit (300) for regulating the turning of the aforementioned motors.
    Type: Grant
    Filed: November 30, 2009
    Date of Patent: February 24, 2015
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Kenji Kikuchi, Daisuke Yasukawa, Hirofumi Watanabe, Takuya Obata, Takayuki Ohno
  • Patent number: 8959909
    Abstract: In a brake-by-wire vehicle brake system using a feedback control unit (12a, 12b, 31, 36, 45) for producing a brake fluid pressure according to a brake input, a response restricting unit (26, 39, 48) restricts a response property of the feedback control unit when an extraneous brake fluid control operation is detected. Thereby, the control unit is prevented from excessively reacting to changes in the brake fluid pressure caused by the extraneous brake fluid control operation, and the vehicle brake system can provide a highly responsive property and a resistance to changes in the brake fluid pressure at the same time.
    Type: Grant
    Filed: December 9, 2011
    Date of Patent: February 24, 2015
    Assignee: Honda Motor Co., Ltd.
    Inventors: Takashi Nishioka, Satoshi Matsushita, Hidetoshi Kobori, Naoto Ohkubo
  • Publication number: 20150040557
    Abstract: Provided is a stroke simulator capable of suppressing occurrence of inclination of a piston with respect to a sliding surface formed in a cylinder. The stroke simulator includes a simulator piston which is displaced by sliding on a sliding surface formed in a first cylinder, and a first return spring which is housed in the first cylinder and applies, to the simulator piston, a reaction force which is generated by an elastic deformation of the spring under a pressing force due to a displacement of the simulator piston, and generates the reaction force which is applied to the simulator piston as a brake reaction force for a brake operating element. The stroke simulator is characterized in that a cup seal for sealing a gap formed between the sliding surface and the simulator piston is mounted in the middle in the axial direction of the sliding surface.
    Type: Application
    Filed: March 29, 2013
    Publication date: February 12, 2015
    Inventors: Kazuaki Murayama, Takaaki Ohnishi, Kazuhiro Tagata
  • Publication number: 20150027113
    Abstract: A method for operating a hydraulic system with a plurality of consumers an electrically controllable pressure supply device and an electrically actuable inlet valve, per consumer, which inlet valve is arranged between the pressure supply device and the consumer, wherein a pressure/volume relationship is predefined or determined for each consumer, wherein each consumer is assigned to a first group or a second group of consumers, wherein the first group of consumers includes at least one consumer, and wherein, in order to set predefined consumer-specific setpoint pressures, the first group of consumers is connected via the respectively opened inlet valve to the pressure supply device, and the inlet valves of the consumers of the second group are closed, wherein the inlet valve of a single, selected consumer of the second group is opened while being regulated to build up a pressure, and a brake system for motor vehicles.
    Type: Application
    Filed: February 28, 2013
    Publication date: January 29, 2015
    Inventor: Harald Biller