Patents by Inventor Bertram Foitzik

Bertram Foitzik has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 10919512
    Abstract: A method is described for detecting a leakage during the operation of a braking system. A braking intention signal characterizing a braking intention is generated by actuating a final control system of an actuating circuit; a setpoint braking pressure required in an active circuit is ascertained based on the braking intention signal; an actual braking pressure in the active circuit is set according to the setpoint braking pressure with the aid of a pressure generation unit by moving a displacement piston to actuate a wheel brake coupled to the active circuit; and a pressure modulation is carried out. The pressure modulation includes setting the actual braking pressure in the active circuit to a value greater than the setpoint braking pressure, and lowering the actual braking pressure until the setpoint braking pressure is reached by moving the displacement piston at a predetermined piston speed.
    Type: Grant
    Filed: August 5, 2019
    Date of Patent: February 16, 2021
    Assignee: Robert Bosch GmbH
    Inventors: Bertram Foitzik, Timo Haible
  • Publication number: 20200172074
    Abstract: To avoid an exceedance of a permissible maximum pressure in a hydraulic vehicle power braking system including anti-slip regulation, continuous valves are to be utilized as inlet valves of wheel brakes of the vehicle braking system, and the inlet valve of a wheel brake, whose outlet valve will be opened or is open in order to regulate the wheel brake pressure, is to be partially closed, so that this inlet valve acts as a throttle and limits a brake pressure in the vehicle braking system.
    Type: Application
    Filed: July 19, 2018
    Publication date: June 4, 2020
    Inventors: Andreas Krautter, Bertram Foitzik, Daniel Frank, Dirk Foerch, Michael Bunk
  • Publication number: 20200047728
    Abstract: A method for controlling an electronically slip-controllable power braking system and a braking system. This power braking system has a brake circuit and a pressure generator including a plunger piston for applying a circuit pressure to the brake circuit. The plunger piston delimits a pressure chamber of the pressure generator and is drivable by an activatable drive unit into a forward or reverse movement. During its forward movement, pressure medium is displaced by the plunger piston out of the pressure chamber into the brake circuit, while during the reverse movement, pressure medium flows out of a reservoir of the power braking system via a flow path into the pressure chamber of the pressure generator. The speed of the reverse movement of the plunger piston is adapted by the electronic control unit so that cavitation at the pressure generator of the power braking system, is avoided or at least minimized.
    Type: Application
    Filed: July 25, 2019
    Publication date: February 13, 2020
    Inventors: Jens Wagner, Bertram Foitzik, Stefan Zahariev
  • Publication number: 20200047734
    Abstract: A method is described for detecting a leakage during the operation of a braking system. A braking intention signal characterizing a braking intention is generated by actuating a final control system of an actuating circuit; a setpoint braking pressure required in an active circuit is ascertained based on the braking intention signal; an actual braking pressure in the active circuit is set according to the setpoint braking pressure with the aid of a pressure generation unit by moving a displacement piston to actuate a wheel brake coupled to the active circuit; and a pressure modulation is carried out. The pressure modulation includes setting the actual braking pressure in the active circuit to a value greater than the setpoint braking pressure, and lowering the actual braking pressure until the setpoint braking pressure is reached by moving the displacement piston at a predetermined piston speed.
    Type: Application
    Filed: August 5, 2019
    Publication date: February 13, 2020
    Inventors: Bertram Foitzik, Timo Haible
  • Publication number: 20200039492
    Abstract: The present invention relates to a method for avoiding excess pressures in a pressure medium circuit of an electronically slip-controllable braking system in the event of a decline of an intrinsic elasticity of the braking system and an electronically slip-controllable braking system. Electronic control units, ascertain a setpoint value for a delivery volume of the pressure generator of these braking systems and convert it into an activation signal for the drive of the pressure generator. In dependence on the prevailing elasticity of the pressure medium circuit, a pressure gradient is established, using which the pressure in the pressure medium circuit changes over time. The ascertainment of an activation signal for the drive of the pressure generator by the electronic control unit is based on the established pressure gradient.
    Type: Application
    Filed: July 16, 2019
    Publication date: February 6, 2020
    Inventors: Bertram Foitzik, Daniel Frank
  • Publication number: 20190389443
    Abstract: A method for detecting brake wear in a vehicle includes ascertaining a condition variable and generating a warning signal if multiple brake judder events are detected from the profile of the condition variable.
    Type: Application
    Filed: May 31, 2019
    Publication date: December 26, 2019
    Inventors: Bertram Foitzik, Jonathan Schnur
  • Patent number: 10328920
    Abstract: A control device for at least one electric parking brake of a vehicle brake system of a vehicle having a control instrument, to determine a setpoint variable regarding a setpoint braking torque to be generated with the parking brake and to output a control signal, the control instrument being configured to ascertain/detect, based on at least one provided signal, whether a brake booster is in at least one functionally limited or incapacitated state, and, if indicated, to determine the setpoint variable by considering at least one defined parameter regarding a requested total braking torque and to control the electric parking brake so that a corresponding actual braking torque is exertable with the parking brake. Also described is an electric parking brake for a vehicle brake system and to a vehicle brake system, and a method for operating a vehicle brake system having a brake booster and an electric parking brake.
    Type: Grant
    Filed: May 5, 2014
    Date of Patent: June 25, 2019
    Assignee: ROBERT BOSCH GMBH
    Inventors: Matthias Kistner, Otmar Bussmann, Bertram Foitzik, Klaus Heyer
  • Patent number: 10214188
    Abstract: A control apparatus for hydraulic components of a braking system of a vehicle, having a control application device that is designed to establish by application of control to the hydraulic components, in consideration of the braking request, at least one brake pressure in at least one wheel brake cylinder in such a way that the braking request is satisfiable; and to execute an antilock braking function at the at least one wheel brake cylinder, the control application device additionally being designed to ascertain whether at least one furnished actual value with regard to a displacement travel (s) of a brake actuation element of the vehicle out of its initial position, and/or with regard to a simulator volume shifted out of a brake master cylinder of the vehicle into a linked simulator, lies within at least one predefined extreme value range.
    Type: Grant
    Filed: March 4, 2016
    Date of Patent: February 26, 2019
    Assignee: ROBERT BOSCH GMBH
    Inventors: Rolf Ellwein, Urs Bauer, Bertram Foitzik, Otmar Bussmann, Matthias Kistner, Robert Kaster
  • Patent number: 10189456
    Abstract: A brake system comprises a master cylinder, a first brake cylinder, a second brake cylinder, an electronically-controlled pressure generating unit distinct from the master cylinder, a first hydraulic circuit in selective fluid communication with the master cylinder and the first brake cylinder, a second hydraulic circuit in selective fluid communication with the master cylinder and the second brake cylinder, and a controller. In a first mode, the controller is operable to actuate the electronically-controlled pressure generating unit to deliver hydraulic fluid pressure to the first brake cylinder and the second brake cylinder proportional to an input. In a second mode, the controller is operable to actuate the electronically-controlled pressure generating unit to deliver hydraulic fluid pressure to the first hydraulic circuit and the first brake cylinder and the master cylinder is in communication with the second hydraulic circuit to deliver hydraulic fluid pressure to the second brake cylinder.
    Type: Grant
    Filed: December 27, 2016
    Date of Patent: January 29, 2019
    Assignee: Robert Bosch GmbH
    Inventors: Bertram Foitzik, Hsien-cheng Wu, Wenguang Zhou
  • Patent number: 10131340
    Abstract: For ascertaining at least one variable regarding a state of a brake fluid in a brake system of a vehicle, an evaluation unit is configured to determine the at least one variable by taking into account at least one pair of values of a provided or ascertained volume flow variable regarding a volume flow of at least a portion of the brake fluid through a flow resistance in the brake system and a provided or ascertained associated pressure drop variable regarding a pressure drop at the flow resistance through which the volume flow flows. For the at least one pair of values taken into account, a volume flow variable lies within a first specified limited value range and the pressure drop variable lies within a second specified limited value range.
    Type: Grant
    Filed: August 25, 2015
    Date of Patent: November 20, 2018
    Assignee: ROBERT BOSCH GMBH
    Inventors: Bertram Foitzik, Dagobert Masur
  • Patent number: 10077037
    Abstract: A hydraulic control device for at least one hydraulic aggregate of a brake system, and a brake booster control device, interacting therewith, for an electromechanical brake booster of the brake system. The hydraulic control device includes a first control electronics by which at least one motor target quantity that is to be realized by a motor of the electromechanical brake booster can be determined, taking into account a provided brake actuating strength quantity relating to a current actuation of a brake actuating element, and by which a specification signal corresponding to the at least one determined motor target quantity can be outputted to the brake booster control device. The brake booster control device has a second control electronics that, at least in a normal mode, outputs the control signal to the motor of the electromechanical brake booster, taking into account the specification signal outputted by the hydraulic control device.
    Type: Grant
    Filed: April 7, 2015
    Date of Patent: September 18, 2018
    Assignee: ROBERT BOSCH GMBH
    Inventors: Bertram Foitzik, Patrick Christian Schaefer
  • Patent number: 10023163
    Abstract: A power brake system having electronic slip regulation, and a method for controlling a power brake system having electronic slip regulation. A return line is equipped with a pressure medium storage unit for storing pressure medium with a pressure that is greater than an ambient atmospheric pressure, and is equipped with a blocking device that is controllable and that is situated between the pressure medium storage device and the reservoir. In addition, there is a pressure medium connection between the pressure medium storage unit and the plunger working space. A controlling of a power brake system takes place using the blocking device in such a way that the return line is blocked relative to the reservoir as soon as a plunger piston, driven by a drive unit, has traveled a definable path in the forward direction.
    Type: Grant
    Filed: May 31, 2017
    Date of Patent: July 17, 2018
    Assignee: ROBERT BOSCH GMBH
    Inventors: Bertram Foitzik, Jens Wagner, Matthias Kistner, Otmar Bussmann
  • Publication number: 20180178773
    Abstract: A vehicle brake system includes a brake pedal operable to receive a user input force, a master cylinder operably coupled to the brake pedal, a brake cylinder selectively coupled to the master cylinder via a hydraulic circuit, an electronically-controlled pressure generating unit distinct from the master cylinder, and a controller operable to receive a signal indicative of the user input force to the brake pedal. In a first mode, the controller is operable to actuate the electronically-controlled pressure generating unit to apply hydraulic fluid pressure to the brake cylinder according to the signal. In a second mode, the master cylinder is operable to actuate the brake cylinder, and the controller is operable to actuate the electronically-controlled pressure generating unit to supplement the master cylinder and extend a fluid volume capacity of the master cylinder.
    Type: Application
    Filed: December 27, 2016
    Publication date: June 28, 2018
    Inventors: Bertram Foitzik, Hsien-cheng Wu, Wenguang Zhou
  • Publication number: 20180178772
    Abstract: A brake system comprises a master cylinder, a first brake cylinder pro, a second brake cylinder, an electronically-controlled pressure generating unit distinct from the master cylinder, a first hydraulic circuit in selective fluid communication with the master cylinder and the first brake cylinder, a second hydraulic circuit in selective fluid communication with the master cylinder and the second brake cylinder, and a controller operable to receive an input. In a first mode, the controller is operable to actuate the electronically-controlled pressure generating unit to deliver hydraulic fluid pressure to the first brake cylinder and the second brake cylinder proportional to the input. In a second mode, the controller is operable to actuate the electronically-controlled pressure generating unit to first hydraulic circuit and the first brake cylinder and the master cylinder is in communication with the second hydraulic circuit to deliver hydraulic fluid pressure to the second brake cylinder.
    Type: Application
    Filed: December 27, 2016
    Publication date: June 28, 2018
    Inventors: Bertram Foitzik, Hsien-cheng Wu, Wenguang Zhou
  • Publication number: 20180079313
    Abstract: A method for operating a regenerative braking system of a vehicle by activating at least one motor employable in generator mode taking into consideration a first information with regard to a requested setpoint total braking torque and a second information with regard to an available generator braking torque which is maximally executable by the at least one motor employable in generator mode, if the setpoint total braking torque exceeds a threshold value and/or a piece of warning information regarding a transition to a backup level that is potentially imminent or has occurred of the regenerative braking system, even if the setpoint total braking torque is less than or equal to the maximally executable available generator braking torque, sufficient brake fluid is transferred via at least one hydraulic actuator to a wheel brake cylinder of the regenerative braking system that an air gap of the particular wheel brake cylinder is closed.
    Type: Application
    Filed: January 22, 2016
    Publication date: March 22, 2018
    Inventors: Bertram Foitzik, Matthias Kistner, Otmar Bussmann, Rolf Ellwein, Urs Bauer, Robert Kaster
  • Patent number: 9908519
    Abstract: A braking system for a vehicle includes: a brake input element for an actuation to input a brake pressure signal by a driver; a brake master cylinder coupled to the brake input element and supplied with hydraulic fluid from a hydraulic fluid reservoir fluidically connected to the brake master cylinder; and a first brake circuit. The first brake circuit has: a switchover valve with controllable through flow rate for the hydraulic fluid; a pressure regulating valve with controllable through flow rate for the hydraulic fluid; a hydraulic pump for optionally building up an elevated hydraulic fluid pressure in the first brake circuit; at least one first wheel brake cylinder exerting a braking torque on a first vehicle wheel coupled to the wheel brake cylinder; and a first fluid line from the hydraulic fluid reservoir being fluidically connected to the pressure regulating valve and to the hydraulic pump.
    Type: Grant
    Filed: April 3, 2014
    Date of Patent: March 6, 2018
    Assignee: ROBERT BOSCH GMBH
    Inventors: Bertram Foitzik, Otmar Bussmann, Matthias Kistner
  • 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
  • Publication number: 20180015912
    Abstract: A power brake system having electronic slip regulation, and a method for controlling a power brake system having electronic slip regulation. A return line is equipped with a pressure medium storage unit for storing pressure medium with a pressure that is greater than an ambient atmospheric pressure, and is equipped with a blocking device that is controllable and that is situated between the pressure medium storage device and the reservoir. In addition, there is a pressure medium connection between the pressure medium storage unit and the plunger working space. A controlling of a power brake system takes place using the blocking device in such a way that the return line is blocked relative to the reservoir as soon as a plunger piston, driven by a drive unit, has traveled a definable path in the forward direction.
    Type: Application
    Filed: May 31, 2017
    Publication date: January 18, 2018
    Inventors: Bertram Foitzik, Jens Wagner, Matthias Kistner, Otmar Bussmann
  • Patent number: 9840148
    Abstract: A control system for an electric motor usable as a generator of a vehicle includes: a first control device and a second control device each configured to define, in consideration of at least one furnished first specification signal with regard to a driver-requested or autonomously requested braking input, at least one target braking torque variable with regard to at least one generator braking torque to be exerted by way of the at least one electric motor on at least one wheel of the vehicle and/or on at least one axle of the vehicle, and to output to the at least one electric motor, and/or to at least one electronic control system of the at least one electric motor, at least one output signal corresponding to the at least one target braking torque variable.
    Type: Grant
    Filed: October 16, 2015
    Date of Patent: December 12, 2017
    Assignee: ROBERT BOSCH GMBH
    Inventors: Matthias Kistner, Otmar Bussmann, Bertram Foitzik, Urs Bauer, Rolf Ellwein, Robert Kaster
  • Patent number: 9765763
    Abstract: A device is described for receiving and dispensing hydraulic fluid, in particular for a hybrid or electric vehicle, having a cylinder, a piston, which is movable in the cylinder for receiving and dispensing hydraulic fluid, and a drive unit; a ramp mechanism being provided, having at least one ramp on which at least one rolling element rolls for moving the piston, the ramp mechanism being situated between a face of the piston and a face of a gearwheel driven by the drive unit.
    Type: Grant
    Filed: October 13, 2011
    Date of Patent: September 19, 2017
    Assignee: Robert Bosch GMBH
    Inventors: Bertram Foitzik, Willi Nagel