Patents by Inventor Soeren Stritzel

Soeren Stritzel 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: 10947942
    Abstract: A high-pressure fuel pump for a fuel injection system of an internal combustion engine includes a pump housing and at least one fastening flange that is fixed to the pump housing by a welding. The welding has one weld region and at least one weld bead arranged laterally from the weld region. The weld bead is arranged in a receiving space formed between the pump housing and the fastening flange.
    Type: Grant
    Filed: March 23, 2017
    Date of Patent: March 16, 2021
    Assignee: Robert Bosch GmbH
    Inventors: Soeren Stritzel, Erich Buerner, Peter Ropertz
  • Patent number: 10662940
    Abstract: A high-pressure fuel pump includes a housing, at least one piston, and a sealing device. The device is positioned on the piston so as to surround the piston, and includes a seal carrier. The carrier is connected, at least in sections, to the housing, and includes at least one radially peripheral portion that is materially bonded to the housing via a capacitor discharge weld connection. Such a pump enables improved cycle times and reduced error rates during production.
    Type: Grant
    Filed: April 7, 2016
    Date of Patent: May 26, 2020
    Assignee: Robert Bosch GmbH
    Inventors: Christoph Lehmeier, Torsten Schoene, Stefan Brueckl, Soeren Stritzel, Heiko Jahn, Stefan Kaufmann, Achim Laub, Manuel Wacker
  • Patent number: 10428814
    Abstract: A piston fuel pump for an internal combustion engine includes: a pump cylinder; and a pump piston which is movably accommodated in the pump cylinder. The pump piston is guided radially with the aid of at least a first and at least a second guide section which are spaced axially apart from each other, the first guide section being situated in a pump cylinder of the piston fuel pump, and the second guide section being situated radially outwardly in the area of the end section facing the drive. The piston fuel pump has a supporting and sealing unit for the pump piston on the first guide section, which includes a guidance area for the radial guidance of the pump piston in the pump cylinder and a sealing area having a sealing lip.
    Type: Grant
    Filed: December 17, 2013
    Date of Patent: October 1, 2019
    Assignee: Robert Bosch GmbH
    Inventors: Peter Ropertz, Achim Laub, Heiko Jahn, Thomas Sebastian, Soeren Stritzel
  • Publication number: 20190293038
    Abstract: A high-pressure fuel pump for a fuel injection system of an internal combustion engine includes a pump housing and at least one fastening flange that is fixed to the pump housing by a welding. The welding has one weld region and at least one weld bead arranged laterally from the weld region. The weld bead is arranged in a receiving space formed between the pump housing and the fastening flange.
    Type: Application
    Filed: March 23, 2017
    Publication date: September 26, 2019
    Inventors: Soeren Stritzel, Erich Buerner, Peter Ropertz
  • Patent number: 10400727
    Abstract: A piston fuel pump for an internal combustion engine includes a pump cylinder and a pump piston that is configured to be axially displaced in the pump cylinder. A working chamber is defined by the pump piston. A seal is provided on the pump cylinder, which seals the working chamber counter to a low pressure region. The seal is applied directly to the pump piston by an injection molding method.
    Type: Grant
    Filed: December 4, 2015
    Date of Patent: September 3, 2019
    Assignee: Robert Bosch GmbH
    Inventors: Jochen Kaesser, Bernd Beiermeister, Soeren Stritzel, Wolfgang Ochs, Ralf Assmann, Heiko Jahn, Christian Preissner, Achim Laub, Peter Ropertz, Stefan Zaensch
  • Patent number: 10400726
    Abstract: A piston fuel pump for an internal combustion engine includes a pump cylinder, a pump piston, a seal, and a cover. The pump piston is axially displaceable in the pump cylinder. The seal is arranged on a periphery of the pump piston. The cover is placed on the piston pump to axially maintain a position of the seal, in particular via an axial bias.
    Type: Grant
    Filed: December 23, 2014
    Date of Patent: September 3, 2019
    Assignee: Robert Bosch GmbH
    Inventors: Soeren Stritzel, Heiko Jahn
  • Patent number: 10393112
    Abstract: A piston fuel pump for an internal combustion engine includes a pump cylinder, a pump piston, and a seal. The pump piston is axially displaceable in the pump cylinder. The seal is arranged on a circumference of the pump piston. A radially outer surface of the seal which faces an inner surface of the pump cylinder is configured, in an axial end region, such that the radially outer surface lies against the pump cylinder as the pump piston is at rest relative to the pump cylinder, and such that a relative motion between the pump cylinder and the pump piston in the axial direction causes the seal to lift off from the pump piston in a radially inward direction.
    Type: Grant
    Filed: December 23, 2014
    Date of Patent: August 27, 2019
    Assignee: Robert Bosch GmbH
    Inventors: Soeren Stritzel, Heiko Jahn
  • Patent number: 10316807
    Abstract: A piston fuel pump for an internal combustion engine includes a pump cylinder and a pump piston, which can be axially displaced in the pump cylinder. The piston fuel pump also includes a seal which is arranged on the periphery of the pump piston. The seal has at least one bump pointing in the axial direction, and the seal axially covers the at least one bump.
    Type: Grant
    Filed: December 22, 2014
    Date of Patent: June 11, 2019
    Assignee: Robert Bosch GmbH
    Inventors: Soeren Stritzel, Heiko Jahn
  • Patent number: 10288025
    Abstract: A piston fuel pump for an internal combustion engine includes a pump cylinder, a pump piston, and a seal. The pump piston is configured to be moved axially in the pump cylinder, wherein a working chamber is delimited by the pump piston. The seal is disposed on the pump piston and seals off the working chamber from a low-pressure region. The seal seals off an end section of the pump piston adjacent to the working chamber from the working chamber.
    Type: Grant
    Filed: December 4, 2015
    Date of Patent: May 14, 2019
    Assignee: Robert Bosch GmbH
    Inventors: Jochen Kaesser, Bernd Beiermeister, Soeren Stritzel, Wolfgang Ochs, Ralf Assmann, Heiko Jahn, Christian Preissner, Achim Laub, Peter Ropertz, Stefen Zaensch
  • Patent number: 10167834
    Abstract: A high-pressure fuel pump which includes a discharge valve with a valve ball and a valve body, the valve body having a sealing section on which a sealing seat is present, and having a guide section in which the valve ball is guided. The guide section includes a first plurality of axially protruding webs between which first flow paths are formed, an opening which faces radially outwardly being present at least between two adjacent webs.
    Type: Grant
    Filed: February 20, 2015
    Date of Patent: January 1, 2019
    Assignee: ROBERT BOSCH GMBH
    Inventors: Gerd Teike, Michael Kleindl, Sebastian Peissner, Soeren Stritzel
  • Patent number: 10107245
    Abstract: A plunger fuel pump for an internal combustion engine includes a pump cylinder and a pump plunger that is axially displaceable in the pump cylinder. The plunger fuel pump has a seal with an annular basic structure arranged around the circumference of the pump plunger. The seal is produced by injection molding in an axial injection direction.
    Type: Grant
    Filed: December 23, 2014
    Date of Patent: October 23, 2018
    Assignee: Robert Bosch GmbH
    Inventors: Oliver Albrecht, Soeren Stritzel, Tobias Schenk, Heiko Jahn
  • Publication number: 20180180006
    Abstract: A piston fuel pump for an internal combustion engine includes a pump cylinder, a pump piston, and a seal. The pump piston is configured to be moved axially in the pump cylinder, wherein a working chamber is delimited by the pump piston. The seal is disposed on the pump piston and seals off the working chamber from a low-pressure region. The seal seals off an end section of the pump piston adjacent to the working chamber from the working chamber.
    Type: Application
    Filed: December 4, 2015
    Publication date: June 28, 2018
    Inventors: Jochen Kaesser, Bernd Beiermeister, Soeren Stritzel, Wolfgang Ochs, Ralf Assmann, Heiko Jahn, Christian Preissner, Achim Laub, Peter Ropertz, Stefen Zaensch
  • Publication number: 20180135619
    Abstract: A high-pressure fuel pump includes a housing, at least one piston, and a sealing device. The device is positioned on the piston so as to surround the piston, and includes a seal carrier. The carrier is connected, at least in sections, to the housing, and includes at least one radially peripheral portion that is materially bonded to the housing via a capacitor discharge weld connection. Such a pump enables improved cycle times and reduced error rates during production.
    Type: Application
    Filed: April 7, 2016
    Publication date: May 17, 2018
    Inventors: Christoph Lehmeier, Torsten Schoene, Stefan Brueckl, Soeren Stritzel, Heiko Jahn, Stefan Kaufmann, Achim Laub, Manuel Wacker
  • Patent number: 9828959
    Abstract: A high-pressure fuel pump includes an outlet valve, a valve ball, a valve spring that acts on the valve ball in a closing direction, and a stop body for the valve ball. The stop body has a stop section that limits the opening stroke of the valve ball, and the valve spring is supported by the stop body. The stop body has a cut-out section that at least partially accommodates the valve spring and that has a radial inner periphery which forms a guide for the valve spring.
    Type: Grant
    Filed: June 18, 2014
    Date of Patent: November 28, 2017
    Assignee: Robert Bosch GmbH
    Inventors: Gerd Teike, Michael Kleindl, Soeren Stritzel
  • Publication number: 20170306912
    Abstract: A piston fuel pump for an internal combustion engine includes a pump cylinder and a pump piston that is configured to be axially displaced in the pump cylinder. A working chamber is defined by the pump piston. A seal is provided on the pump cylinder, which seals the working chamber counter to a low pressure region. The seal is applied directly to the pump piston by an injection molding method.
    Type: Application
    Filed: December 4, 2015
    Publication date: October 26, 2017
    Inventors: Jochen Kaesser, Bernd Beiermeister, Soeren Stritzel, Wolfgang Ochs, Ralf Assmann, Heiko Jahn, Christian Preissner, Achim Laub, Peter Ropertz, Stefan Zaensch
  • Publication number: 20170268472
    Abstract: A high-pressure fuel pump includes a piston and a sealing device. The piston includes an end portion. The sealing device is disposed on the end portion, faces a drive of the fuel pump, and is configured to radially surround the piston. The piston is displaceable along a longitudinal axis relative to the sealing device. The sealing device includes a first and a second sealing portion which extend round in a radially internal manner. The first and the second sealing portions are each located at mutually spaced-apart axial end regions of the sealing device. The first and the second sealing portions are present on an injection-molded component which is subsequently processed in a cutting manner.
    Type: Application
    Filed: October 8, 2015
    Publication date: September 21, 2017
    Inventors: Thomas KRUMBHOLZ, Soeren STRITZEL, Heiko JAHN
  • Publication number: 20170159629
    Abstract: A high-pressure fuel pump which includes a discharge valve with a valve ball and a valve body, the valve body having a sealing section on which a sealing seat is present, and having a guide section in which the valve ball is guided. The guide section includes a first plurality of axially protruding webs between which first flow paths are formed, an opening which faces radially outwardly being present at least between two adjacent webs.
    Type: Application
    Filed: February 20, 2015
    Publication date: June 8, 2017
    Inventors: Gerd Teike, Michael Kleindl, Sebastian Peissner, Soeren Stritzel
  • Publication number: 20170009723
    Abstract: A piston fuel pump for an internal combustion engine includes a pump cylinder, a pump piston, a seal, and a cover. The pump piston is axially displaceable in the pump cylinder. The seal is arranged on a periphery of the pump piston. The cover is placed on the piston pump to axially maintain a position of the seal, in particular via an axial bias.
    Type: Application
    Filed: December 23, 2014
    Publication date: January 12, 2017
    Applicant: Robert Bosch GmbH
    Inventors: Soeren Stritzel, Heiko Jahn
  • Publication number: 20170009722
    Abstract: A piston fuel pump for an internal combustion engine includes a pump cylinder and a pump piston, which can be axially displaced in the pump cylinder. The piston fuel pump also includes a seal which is arranged on the periphery of the pump piston. The seal has at least one bump pointing in the axial direction, and the seal axially covers the at least one bump.
    Type: Application
    Filed: December 22, 2014
    Publication date: January 12, 2017
    Inventors: Soeren Stritzel, Heiko Jahn
  • Publication number: 20170009721
    Abstract: A plunger fuel pump for an internal combustion engine includes a pump cylinder and a pump plunger that is axially displaceable in the pump cylinder. The plunger fuel pump has a seal with an annular basic structure arranged around the circumference of the pump plunger. The seal is produced by injection molding in an axial injection direction.
    Type: Application
    Filed: December 23, 2014
    Publication date: January 12, 2017
    Inventors: Oliver Albrecht, Soeren Stritzel, Tobias Schenk, Heiko Jahn