Patents by Inventor Hartwig Senftleben

Hartwig Senftleben 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).

  • Publication number: 20240093664
    Abstract: The invention relates to an ignition device (1) for an internal combustion engine, more particularly for a hydrogen-fueled internal combustion engine, comprising a primary circuit (2.1) and a secondary circuit (2.2), wherein—the primary circuit (2.1) has a primary coil (3), wherein—the secondary circuit (2.2) has a secondary coil (4) inductively coupled to the primary coil (3), a diode (5) for suppressing a start-up spark, and a high-voltage connector (6) for connection to a spark plug (7), characterized in that a parallel path (10) is formed electrically in parallel to the diode (5) of the secondary circuit (2.2), in which parallel path there is arranged an ohmic load resistor (11) or an electric switch (20) and by means of which parallel path residual energy, in particular residual voltage, which remains in the secondary circuit (2.2) following discharge of the ignition device (1), can be extinguished, in particular by feeding the residual energy in the secondary circuit (2.
    Type: Application
    Filed: December 7, 2021
    Publication date: March 21, 2024
    Inventors: Tim Skowronek, Bernd Fischer, Hartwig Senftleben
  • Patent number: 10177538
    Abstract: An ignition device for a combustion chamber of an internal combustion engine includes a first electrode and a second electrode, which is movable with the aid of an actuator. The ignition device is configured to generate a first ignition spark when a contact between the first and second electrode is interrupted. To accomplish this, the second electrode is moved away from the first electrode. A third electrode is also provided, which is spaced apart from the first electrode. With the aid of the third electrode, a second ignition spark can be generated by moving the second electrode away from the other two electrodes. With the three electrodes, the ignition unit is configured to allow the two ignition sparks to pass through a volume formed between the electrodes in the direction transverse to the longitudinal extension of the ignition sparks in the course of the movement of the second electrode.
    Type: Grant
    Filed: May 8, 2014
    Date of Patent: January 8, 2019
    Assignee: ROBERT BOSCH GMBH
    Inventors: Hartwig Senftleben, Manfred Vogel
  • Patent number: 9745946
    Abstract: The invention relates to a device for controlling a multiple spark operation of an internal combustion engine, wherein an ignition transformer can be switched off and back on again for delivering or interrupting an ignition spark energy based on at least one current threshold. The invention proposes that the at least one current threshold be programmable.
    Type: Grant
    Filed: September 11, 2008
    Date of Patent: August 29, 2017
    Assignee: Robert Bosch GmbH
    Inventors: Mario Maier, Bernhard Opitz, Hartwig Senftleben, Bernd Hilgenberg
  • Publication number: 20160087412
    Abstract: An ignition device for a combustion chamber of an internal combustion engine includes a first electrode and a second electrode, which is movable with the aid of an actuator. The ignition device is configured to generate a first ignition spark when a contact between the first and second electrode is interrupted. To accomplish this, the second electrode is moved away from the first electrode. A third electrode is also provided, which is spaced apart from the first electrode. With the aid of the third electrode, a second ignition spark can be generated by moving the second electrode away from the other two electrodes. With the three electrodes, the ignition unit is configured to allow the two ignition sparks to pass through a volume formed between the electrodes in the direction transverse to the longitudinal extension of the ignition sparks in the course of the movement of the second electrode.
    Type: Application
    Filed: May 8, 2014
    Publication date: March 24, 2016
    Inventors: Hartwig Senftleben, Manfred Vogel
  • Publication number: 20110270506
    Abstract: The invention relates to a device for controlling a multiple spark operation of an internal combustion engine, wherein an ignition transformer can be switched off and back on again for delivering or interrupting an ignition spark energy based on at least one current threshold. The invention proposes that the at least one current threshold be programmable.
    Type: Application
    Filed: September 11, 2008
    Publication date: November 3, 2011
    Applicant: Robert Bosch GMBH
    Inventors: Mario Maier, Bernhard Opitz, Hartwig Senftleben, Bernd Hilgenberg