Patents by Inventor Herbert Vollert

Herbert Vollert 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: 10875512
    Abstract: A method for boosting a braking force in an electronically slip-controllable vehicle brake system, as well as an electronically slip-controllable vehicle brake system. Vehicle brake systems of this kind are at least equipped with a power brake unit and electronic slip-controllable vehicle brake system. In the case of a malfunction of the power brake unit, the traction-slip control device (92) takes over the boosting. A method for determining a composite signal which is adjusted by controlling a drive of a pressure generator of the slip-controllable vehicle brake system accordingly. To this end, an electronic control unit records two mutually independent input quantities, converts these input quantities into evaluation signals and sums the evaluation signals mathematically to yield a composite signal. The latter represents a setpoint brake pressure that the slip-controllable vehicle brake system supplies by controlling a pressure generator accordingly.
    Type: Grant
    Filed: October 19, 2017
    Date of Patent: December 29, 2020
    Assignee: Robert Bosch GmbH
    Inventors: Florian Haag, Herbert Vollert, Jens Kolarsky
  • Publication number: 20200353909
    Abstract: A braking system for a vehicle, which includes a control system configured to: actuate a pressure generation device in accordance with a braking request signal to generate the brake pressure; ascertain an operational state of the pressure generation device; ascertain a position of a displacement piston of a brake master cylinder based on the braking request signal; and couple a pressure modulation device to a brake master cylinder volume and actuate the device so that the pressure modulation device conveys brake fluid out of the brake master cylinder volume into the wheel brake circuit, if the operational status of the pressure generation device is ascertained to be nonoperational and the displacement piston is in the idle position.
    Type: Application
    Filed: April 23, 2020
    Publication date: November 12, 2020
    Inventors: Herbert Vollert, Jonathan Schnur, Markus Weigel
  • Publication number: 20200086844
    Abstract: The disclosure relates to a control device and a corresponding method for operating an electromechanical brake booster of a brake system of a vehicle, comprising an electronics unit that defines a target variable with respect to a target rotational speed of a motor of the electromechanical brake booster, taking into account a brake input signal with respect to a braking request, and that sends at least one control signal to the motor. The electronics unit defines a maximum target variable with respect to a maximum target rotational speed of the motor, taking into account a current intensity of a motor current of the motor and a current angle of rotation of a rotor of the motor, and defines the target variable with respect to the target rotational speed of the motor of the electromechanical brake booster to be at the most equal to the defined maximum target variable.
    Type: Application
    Filed: November 30, 2017
    Publication date: March 19, 2020
    Inventors: Herbert Vollert, Dirk Mahnkopf, Christian Binder, Manfred Gerdes, Oliver Fuchs
  • Publication number: 20200059087
    Abstract: A method is described for operating an electrical system, in particular, of a motor vehicle, which includes at least one electrical consumer, at least one energy source for electrical energy, and at least one control unit, the consumer being test activated by the control unit for the purpose of initializing a start of the system and a voltage level of an electrical voltage in the system being monitored and compared to a predefinable minimum value, and the activation being interrupted if the voltage level falls below the minimum value, and the consumer being subsequently test reactivated. It is provided that the number of the interruptions is counted and the consumer is deactivated at least for a predefinable period of time upon reaching a predefinable maximum number.
    Type: Application
    Filed: August 7, 2019
    Publication date: February 20, 2020
    Inventors: Christian Meister, Christian Michael Praetorius, Helmut Suelzle, Otmar Bussmann, Herbert Vollert, Zied Terchella
  • Publication number: 20190315326
    Abstract: A method for boosting a braking force in an electronically slip-controllable vehicle brake system, as well as an electronically slip-controllable vehicle brake system. Vehicle brake systems of this kind are at least equipped with a power brake unit and electronic slip-controllable vehicle brake system. In the case of a malfunction of the power brake unit, the traction-slip control device (92) takes over the boosting. A method for determining a composite signal which is adjusted by controlling a drive of a pressure generator of the slip-controllable vehicle brake system accordingly. To this end, an electronic control unit records two mutually independent input quantities, converts these input quantities into evaluation signals and sums the evaluation signals mathematically to yield a composite signal. The latter represents a setpoint brake pressure that the slip-controllable vehicle brake system supplies by controlling a pressure generator accordingly.
    Type: Application
    Filed: October 19, 2017
    Publication date: October 17, 2019
    Inventors: Florian Haag, Herbert Vollert, Jens Kolarsky
  • Patent number: 10308231
    Abstract: A method for controlling a brake booster in a hydraulic brake system, in which the smallest partial pressure target value of at least three partial pressure target values is ascertained, and is then defined as the target pressure value and is then set using a brake booster.
    Type: Grant
    Filed: July 24, 2014
    Date of Patent: June 4, 2019
    Assignee: ROBERT BOSCH GMBH
    Inventors: Michael Butz, Manfred Gerdes, Patrick Christian Schaefer, Herbert Vollert
  • Patent number: 10040434
    Abstract: An electromechanical brake booster is provided for a braking system of a vehicle, having a valve body and an input rod, the valve body, to which at a displacement motion in a brake application direction has been imparted, being displaceable up to a differential travel equal to a limit differential travel with reference to the input rod, and then a co-displacement motion in the brake application direction being impartable to the input rod if the co-displacement motion is acted against at most by a retention force below a predefined threshold value, and at least one buffer element being disposed on the input rod and/or on the valve body in such a way that if a retention force above the predefined threshold value acts against the co-displacement motion, the differential travel is increasable above the limit differential travel by way of a deformation of the at least one buffer element.
    Type: Grant
    Filed: June 17, 2015
    Date of Patent: August 7, 2018
    Assignee: ROBERT BOSCH GMBH
    Inventors: Manfred Gerdes, Herbert Vollert
  • Patent number: 9932023
    Abstract: The present invention relates to a braking device and to a braking system, each having a master brake cylinder (10) having at least one first pressure chamber (12) that is subdivided or is able to be subdivided at least into a first partial volume (12a) and a second partial volume (12b), which are hydraulically connectable or connected to a brake fluid reservoir (24), a first brake circuit (28) being hydraulically connectable or connected to the first partial volume (12a), and having a valve device (38) that is mechanically designed in such a way that a pressure buildup up to a mechanically specified limit pressure may be brought about in the second partial volume (12b), brake fluid being transferable at least into the first brake circuit (28) via at least one subcomponent (38a) of the valve device (38), and an exceeding of the limit pressure in the second partial volume (12b) being prevented.
    Type: Grant
    Filed: February 27, 2014
    Date of Patent: April 3, 2018
    Assignee: ROBERT BOSCH GMBH
    Inventors: Herbert Vollert, Oliver Leibfried, Stefan Strengert, Sr., Urs Bauer, Volkmar Schlotter, Michael Kunz, Matthias Kistner, Karl-Heinz Willmann, Matthias Schanzenbach, Suekrue Senol, Dagobert Masur
  • Patent number: 9827965
    Abstract: A method for operating a regenerative braking system of a vehicle includes: applying control to at least one valve of a brake circuit, before and/or during operation of a generator of the braking system, so that brake fluid is displaced out of a brake master cylinder and/or out of the at least one brake circuit into at least one reservoir volume; defining a target force difference variable regarding a booster force exerted by a brake booster in consideration of at least one of a generator braking torque information item, a brake master cylinder pressure variable, and an evaluation variable derived from at least the generator braking torque information item or the brake master cylinder pressure variable; and controlling the brake booster in consideration of the defined target force difference variable.
    Type: Grant
    Filed: May 3, 2013
    Date of Patent: November 28, 2017
    Assignee: ROBERT BOSCH GMBH
    Inventors: Jens Kolarsky, Michael Kunz, Stefan Strengert, Herbert Vollert
  • Patent number: 9592809
    Abstract: The invention relates to a hybrid brake system having a hydraulic service brake system and an electromechanical service brake system. According to the invention, a brake booster is designed as a pedal simulator, which can be used to boost power and to generate a pedal power which is counter to the direction of actuation. When the hydraulic service brake system fails, the electromechanical service brake system is used for braking and the brake booster generates a pedal power which allows or facilitates dosage of the brake actuation.
    Type: Grant
    Filed: November 16, 2009
    Date of Patent: March 14, 2017
    Assignee: Robert Bosch GmbH
    Inventors: Herbert Vollert, Reinhard Weiberle
  • Patent number: 9573575
    Abstract: A method for operating a brake booster of a vehicle includes: establishing an actual displacement speed signal of an input rod, to which a driver brake force is at least partially transmitted; filtering high-frequency and/or low-frequency signal components out of the established actual displacement speed signal; establishing a setpoint displacement speed signal of at least one booster piston, which is displaceable with the aid of the brake booster, at least in consideration of a predefined characteristic curve and the filtered actual displacement speed signal; and establishing an activation signal of the brake booster at least in consideration of the established setpoint displacement speed signal and outputting the activation signal to the brake booster to displace at least the booster piston at an execution speed corresponding to the activation signal.
    Type: Grant
    Filed: January 17, 2013
    Date of Patent: February 21, 2017
    Assignee: ROBERT BOSCH GmbH
    Inventors: Manfred Gerdes, Herbert Vollert
  • Publication number: 20160200306
    Abstract: A method for controlling a brake booster in a hydraulic brake system, in which the smallest partial pressure target value of at least three partial pressure target values is ascertained, and is then defined as the target pressure value and is then set using a brake booster.
    Type: Application
    Filed: July 24, 2014
    Publication date: July 14, 2016
    Inventors: Michael Butz, Manfred Gerdes, Patrick Christian Schaefer, Herbert Vollert
  • Patent number: 9302657
    Abstract: A method for operating a motor vehicle hydraulic braking system having at least one electric motor-operated braking pressure generator. The output power of the electric motor-operated braking pressure generator is restricted during normal driving/braking situations and the restriction is temporarily deactivated upon identification of a critical driving situation, such as an overstressing of the brake system to include brake fade.
    Type: Grant
    Filed: December 21, 2012
    Date of Patent: April 5, 2016
    Assignees: Ford Global Technologies, LLC, Robert Bosch GmbH
    Inventors: Rudolf Daniels, Ian Moore, Thomas Svensson, Joerg Riethmueller, Herbert Vollert, Timo Jahnz
  • Publication number: 20160082938
    Abstract: A braking device and a braking system are provided, each having a master brake cylinder having at least one first pressure chamber that is subdivided or is able to be subdivided at least into a first partial volume and a second partial volume, which are hydraulically connectable or connected to a brake fluid reservoir, a first brake circuit being hydraulically connectable or connected to the first partial volume, and having a valve device that is mechanically designed in such a way that a pressure buildup up to a mechanically specified limit pressure may be brought about in the second partial volume, brake fluid being transferable at least into the first brake circuit via at least one subcomponent of the valve device, and an exceeding of the limit pressure in the second partial volume being prevented.
    Type: Application
    Filed: February 27, 2014
    Publication date: March 24, 2016
    Inventors: Herbert VOLLERT, Oliver LEIBFRIED, Stefan STRENGERT, SR., Urs BAUER, Volkmar SCHLOTTER, Michael KUNZ, Matthias KISTNER, Karl-Heinz WILLMANN, Matthias SCHANZENBACH, Suekrue SENOL, Dagobert MASUR
  • Publication number: 20150360666
    Abstract: An electromechanical brake booster is provided for a braking system of a vehicle, having a valve body and an input rod, the valve body, to which at a displacement motion in a brake application direction has been imparted, being displaceable up to a differential travel equal to a limit differential travel with reference to the input rod, and then a co-displacement motion in the brake application direction being impartable to the input rod if the co-displacement motion is acted against at most by a retention force below a predefined threshold value, and at least one buffer element being disposed on the input rod and/or on the valve body in such a way that if a retention force above the predefined threshold value acts against the co-displacement motion, the differential travel is increasable above the limit differential travel by way of a deformation of the at least one buffer element.
    Type: Application
    Filed: June 17, 2015
    Publication date: December 17, 2015
    Inventors: Manfred GERDES, Herbert VOLLERT
  • Patent number: 9156450
    Abstract: A method and control device for operating a brake-boosted hydraulic brake system of a vehicle, including ascertaining information relating to an increase or a decrease in an additional braking force exerted on at least one wheel in addition to a hydraulic braking force of the brake system, which increase or decrease is greater than a predefined minimum difference, altering an assistance force to a force introduction element, by a force difference, taking account of the ascertained information, so that the hydraulic braking force is altered to correspond to the increase or decrease in the additional braking force, and displacing a volume of a brake medium of the brake system between at least one accumulator chamber of at least one plunger and/or of at least one two-chamber cylinder and a volume of the brake system outside the accumulator.
    Type: Grant
    Filed: December 15, 2010
    Date of Patent: October 13, 2015
    Assignee: ROBERT BOSCH GMBH
    Inventors: Herbert Vollert, Frank Kneip
  • Patent number: 9139186
    Abstract: An electromechanical brake booster is disclosed. The brake booster is constructed with two worm gears which run in opposite directions and whose axial forces compensate one another. The worm gears drive toothed rack gears which convert a rotational driving movement into a translatory output movement for activating a master brake cylinder. As a result of the provision of two gear paths, the loading of each gear path is halved and an application of force to a booster body, which forms a gear output, is symmetrical.
    Type: Grant
    Filed: December 28, 2009
    Date of Patent: September 22, 2015
    Assignee: Robert Bosch GmbH
    Inventors: Herbert Vollert, Remy Garnier, Reinhard Weiberle, Timo Jahnz, Jens Kolarsky, Stephan Hoenle
  • Publication number: 20150197230
    Abstract: A method for operating a regenerative braking system of a vehicle includes: applying control to at least one valve of a brake circuit, before and/or during operation of a generator of the braking system, so that brake fluid is displaced out of a brake master cylinder and/or out of the at least one brake circuit into at least one reservoir volume; defining a target force difference variable regarding a booster force exerted by a brake booster in consideration of at least one of a generator braking torque information item, a brake master cylinder pressure variable, and an evaluation variable derived from at least the generator braking torque information item or the brake master cylinder pressure variable; and controlling the brake booster in consideration of the defined target force difference variable.
    Type: Application
    Filed: May 3, 2013
    Publication date: July 16, 2015
    Inventors: Jens Kolarsky, Michael Kunz, Stefan Strengert, Herbert Vollert
  • Publication number: 20150115700
    Abstract: A brake assembly includes a hydraulic auxiliary-power-operated first brake system including a master brake cylinder operably connected to an electromechanical brake booster and a hydraulic wheel brake for at least one wheel, the master brake cylinder configured to be activated by muscle force, and an externally powered second brake system including a hydraulic pressure source operated by external power and operably connected to a hydraulic wheel brake for at least one other wheel. The brake assembly further includes an electric drive motor configured for operation as a generator to brake the motor vehicle by acting on the at least one other wheel and a control unit configured to reduce a braking effect of the first brake system by reducing boosting of the electromechanical brake booster, if a braking effect of the electric drive motor in a generator mode is greater than the determined braking effect of the second brake system.
    Type: Application
    Filed: December 29, 2014
    Publication date: April 30, 2015
    Inventors: Herbert Vollert, Reinhard Weiberle, Michael Kunz, Jens Kolarsky
  • Publication number: 20150046053
    Abstract: A method for operating a brake booster of a vehicle includes: establishing an actual displacement speed signal of an input rod, to which a driver brake force is at least partially transmitted; filtering high-frequency and/or low-frequency signal components out of the established actual displacement speed signal; establishing a setpoint displacement speed signal of at least one booster piston, which is displaceable with the aid of the brake booster, at least in consideration of a predefined characteristic curve and the filtered actual displacement speed signal; and establishing an activation signal of the brake booster at least in consideration of the established setpoint displacement speed signal and outputting the activation signal to the brake booster to displace at least the booster piston at an execution speed corresponding to the activation signal.
    Type: Application
    Filed: January 17, 2013
    Publication date: February 12, 2015
    Applicant: ROBERT BOSCH GmbH
    Inventors: Michael Gerdes, Herbert Vollert