Patents by Inventor Ingo Kallfass

Ingo Kallfass 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: 12152610
    Abstract: A method is for operating a valve that includes a linearly movable control slide, at least one solenoid, and a position sensor. The linearly movable control slide is preloaded by at least one spring in a direction of a zero position. The at least one solenoid is coupled to the control slide in such a way that the control slide can be moved away from the zero position by application of current to the solenoid. The position sensor is configured to measure an actual instantaneous position of the control slide. Each solenoid is assigned a current control device configured to influence a current through the relevant solenoid based on an instantaneous current control variable. The instantaneous current control variable is dependent on a quasi-periodic dither current control variable. The method also includes calculating an actual dither amplitude from the actual instantaneous position using a band-pass filter.
    Type: Grant
    Filed: October 28, 2022
    Date of Patent: November 26, 2024
    Assignee: Robert Bosch GmbH
    Inventors: Ingo Kallfass, Steffen Knapper, Reiner Kunz
  • Publication number: 20230139395
    Abstract: A method is for operating a valve that includes a linearly movable control slide, at least one solenoid, and a position sensor. The linearly movable control slide is preloaded by at least one spring in a direction of a zero position. The at least one solenoid is coupled to the control slide in such a way that the control slide can be moved away from the zero position by application of current to the solenoid. The position sensor is configured to measure an actual instantaneous position of the control slide. Each solenoid is assigned a current control device configured to influence a current through the relevant solenoid based on an instantaneous current control variable. The instantaneous current control variable is dependent on a quasi-periodic dither current control variable. The method also includes calculating an actual dither amplitude from the actual instantaneous position using a band-pass filter.
    Type: Application
    Filed: October 28, 2022
    Publication date: May 4, 2023
    Inventors: Ingo Kallfass, Steffen Knapper, Reiner Kunz
  • Patent number: 7878481
    Abstract: A plurality of valves are triggered so that a first valve is triggered by a first trigger signal and a second valve is triggered by a second trigger signal, the first trigger signal and the second trigger signal are each generated by generating a pulse width modulated frequency signal of the first frequency f1 and a dither signal of the second frequency f2, where f1>f2, the trigger signal is generated by modulating the clock pulse duty factor of the frequency signal with the dither signal, and the dither signals of the first trigger signal and of the second trigger signal are synchronized with one another at chronological intervals.
    Type: Grant
    Filed: March 9, 2009
    Date of Patent: February 1, 2011
    Assignee: Robert Bosch GmbH
    Inventors: Ingo Kallfass, Reiner Kurz, Gerhard Keuper, Gerold Mueller
  • Publication number: 20090234508
    Abstract: A plurality of valves are triggered so that a first valve is triggered by a first trigger signal and a second valve is triggered by a second trigger signal, the first trigger signal and the second trigger signal are each generated by generating a pulse width modulated frequency signal of the first frequency f1 and a dither signal of the second frequency f2, where f1>f2, the trigger signal is generated by modulating the clock pulse duty factor of the frequency signal with the dither signal, and the dither signals of the first trigger signal and of the second trigger signal are synchronized with one another at chronological intervals.
    Type: Application
    Filed: March 9, 2009
    Publication date: September 17, 2009
    Inventors: Ingo Kallfass, Reiner Kurz, Gerhard Keuper, Gerold Mueller