Patents by Inventor Martin Kropp

Martin Kropp 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: 20200256380
    Abstract: The invention relates to an exhaust-gas-driven turbocharger having a hydrodynamic plain bearing having a rotor and a stator, the rotor being rotatable with respect to the stator, the rotor bearing surface being located opposite a counter-surface of the stator in order to generate hydrodynamic pressure in the region of a converging gap. In such a hydrodynamic plain bearing, the application properties can be improved by the fact that the rotor bearing surface and/or the counter-surface constitutes in a section view, in the context of a section along and through the rotation axis, a continuous bearing contour that is constituted from convex or concave curvatures and/or from at least two contour segments that are embodied as straight lines and/or curvatures. The invention also relates to a hydrodynamic plain bearing or bearing arrangement having such a plain bearing.
    Type: Application
    Filed: April 30, 2020
    Publication date: August 13, 2020
    Inventors: Martin Berger, Rüdiger Kleinschmidt, Martin Kropp, Jörg Jennes
  • Publication number: 20200248616
    Abstract: The invention relates to an electric media gap machine (10) for a compressor (2) and/or a turbine (3), in particular for a turbocharger (1) of an internal combustion engine, comprising a shaft (5) which is rotatably mounted in a housing (6) and to which a rotor (11) is rotationally fixed, a stator (12) which is fixed to the housing and which has at least one multiphase drive winding (16) for generating a drive magnetic field and multiple stator teeth (15) which protrude inwards radially. Each stator tooth (15) has a tooth base (29) paired with a stator yoke (12) and a free end (28) facing the rotor (11). The end (28) of at least multiple stator teeth (15), in particular of all of the stator teeth (15), is axially offset to the tooth base (29) of the same stator tooth (15).
    Type: Application
    Filed: September 18, 2018
    Publication date: August 6, 2020
    Inventors: Holger Rapp, Michael Nau, Thomas Frühschütz, Ingo Immendoerfer, Michael Bäuerle, Martin Kropp, Hartmut Weiss
  • Patent number: 10670071
    Abstract: The invention relates to an exhaust-gas-driven turbocharger having a hydrodynamic plain bearing having a rotor and a stator, the rotor being rotatable with respect to the stator, the rotor bearing surface being located opposite a counter-surface of the stator in order to generate hydrodynamic pressure in the region of a converging gap. In such a hydrodynamic plain bearing, the application properties can be improved by the fact that the rotor bearing surface and/or the counter-surface constitutes in a section view, in the context of a section along and through the rotation axis, a continuous bearing contour that is constituted from convex or concave curvatures and/or from at least two contour segments that are embodied as straight lines and/or curvatures. The invention also relates to a hydrodynamic plain bearing or bearing arrangement having such a plain bearing.
    Type: Grant
    Filed: March 18, 2015
    Date of Patent: June 2, 2020
    Assignee: BMTS Technology GmbH & Co. KG
    Inventors: Martin Berger, Rüdiger Kleinschmidt, Martin Kropp, Jörg Jennes
  • Patent number: 10316664
    Abstract: An exhaust gas turbocharger may include a turbine housing and a turbine arranged in the turbine housing. The turbine housing may include at least two exhaust gas channels and a partition separating the at least two exhaust gas channels from one another. A wastegate valve may be arranged such that the at least two exhaust gas channels are connectable to a bypass duct bypassing the turbine. The wastegate valve may include a valve body and a valve seat interacting with the valve body. The wastegate valve may be configured such that at least one of a ram supercharging operation and a pulse supercharging operation is activated depending on a degree of opening of the wastegate valve.
    Type: Grant
    Filed: May 17, 2016
    Date of Patent: June 11, 2019
    Assignee: BMTS Technology GmbH & Co. KG
    Inventors: Dirk Lummer, Martin Kropp
  • Patent number: 10030518
    Abstract: An exhaust gas turbocharger may include a turbine housing and a turbine. The turbine housing may include at least two exhaust gas channels and a partition. A wastegate valve may be arranged such that the at least two exhaust gas channels are connectable to a bypass duct bypassing the turbine. The wastegate valve may include a hollow valve body and a valve seat interacting with the valve body. The wastegate valve may be configured such that at least one of ram supercharging and pulse supercharging is performed. A connecting opening may be arranged between the at least two exhaust-gas channels. The valve body may have a base region configured to facilitate a discharging of an exhaust-gas steam into the bypass duct and/or an overflowing of one exhaust gas channel through the connecting opening into the other exhaust-gas channel.
    Type: Grant
    Filed: May 17, 2016
    Date of Patent: July 24, 2018
    Assignee: Bosch Mahle Turbo Systems GmbH & CO. KG
    Inventors: Dirk Lummer, Martin Kropp
  • Publication number: 20180023620
    Abstract: The invention relates to an exhaust-gas-driven turbocharger having a hydrodynamic plain bearing having a rotor and a stator, the rotor being rotatable with respect to the stator, the rotor bearing surface being located opposite a counter-surface of the stator in order to generate hydrodynamic pressure in the region of a converging gap. In such a hydrodynamic plain bearing, the application properties can be improved by the fact that the rotor bearing surface and/or the counter-surface constitutes in a section view, in the context of a section along and through the rotation axis, a continuous bearing contour that is constituted from convex or concave curvatures and/or from at least two contour segments that are embodied as straight lines and/or curvatures. The invention also relates to a hydrodynamic plain bearing or bearing arrangement having such a plain bearing.
    Type: Application
    Filed: March 18, 2015
    Publication date: January 25, 2018
    Inventors: Martin Berger, Rüdiger Kleinschmidt, Martin Kropp, Jörg Jennes
  • Publication number: 20160341109
    Abstract: An exhaust gas turbocharger may include a turbine housing and a turbine. The turbine housing may include at least two exhaust gas channels and a partition. A wastegate valve may be arranged such that the at least two exhaust gas channels are connectable to a bypass duct bypassing the turbine. The wastegate valve may include a hollow valve body and a valve seat interacting with the valve body. The wastegate valve may be configured such that at least one of ram supercharging and pulse supercharging is performed. A connecting opening may be arranged between the at least two exhaust-gas channels. The valve body may have a base region configured to facilitate a discharging of an exhaust-gas steam into the bypass duct and/or an overflowing of one exhaust gas channel through the connecting opening into the other exhaust-gas channel.
    Type: Application
    Filed: May 17, 2016
    Publication date: November 24, 2016
    Inventors: Dirk Lummer, Martin Kropp
  • Publication number: 20160341111
    Abstract: An exhaust gas turbocharger may include a turbine housing and a turbine arranged in the turbine housing. The turbine housing may include at least two exhaust gas channels and a partition separating the at least two exhaust gas channels from one another. A wastegate valve may be arranged such that the at least two exhaust gas channels are connectable to a bypass duct bypassing the turbine. The wastegate valve may include a valve body and a valve seat interacting with the valve body. The wastegate valve may be configured such that at least one of a ram supercharging operation and a pulse supercharging operation is activated depending on a degree of opening of the wastegate valve.
    Type: Application
    Filed: May 17, 2016
    Publication date: November 24, 2016
    Inventors: Dirk Lummer, Martin Kropp
  • Patent number: 7198203
    Abstract: A fuel injector in injection systems for internal combustion engines having a valve body containing a control chamber that can be pressure-relieved and can be acted on with fuel via an inlet throttle and can be pressure-relieved via an outlet throttle. A first actuator can actuate a closing element. The valve body is connected to a holding body that has a nozzle body connected to it, which encompasses an injection valve element. In order to relieve the pressure in the control chamber, an additional, second outlet throttle is provided, whose closing element can be actuated either by an additional actuator or as a function of the power supply to a double-switching actuator.
    Type: Grant
    Filed: July 10, 2003
    Date of Patent: April 3, 2007
    Assignee: Robert Bosch GmbH
    Inventors: Achim Brenk, Martin Kropp, Manfred Mack, Juergen Hammer, Reinhard Tampe, Heike Bastian
  • Patent number: 7093582
    Abstract: A fuel injection system for internal combustion engines, having a fuel injector that can be acted upon by a high-pressure fuel source includes a pressure booster, which contains a movable boosting element dividing a work chamber which can be made to communicate with the high-pressure source via a high-pressure line from a high-pressure chamber that acts on the fuel injector. The high-pressure from chamber is variable by filling and evacuating a differential pressure chamber of the pressure booster. A filter element is received in a line portion that branches off from the high-pressure line and is upstream of flow connections for filling the differential and high pressure chambers.
    Type: Grant
    Filed: June 30, 2003
    Date of Patent: August 22, 2006
    Assignee: Robert Bosch GmbH
    Inventors: Hans-Christoph Magel, Martin Kropp
  • Patent number: 7083113
    Abstract: A fuel injection apparatus for injecting fuel into the combustion chambers of an internal combustion engine. includes a high pressure accumulator, a pressure booster, and a metering valve. The pressure booster includes a working chamber and a control chamber that are separated from each other by an axially movable piston. A pressure change in the control chamber produces a pressure change in a compression chamber that acts on a nozzle chamber via a fuel inlet. The nozzle chamber encompasses a nozzle needle. A nozzle spring chamber that acts on the injection valve element can be filled on the high-pressure side via a line that leads from the compression chamber and contains an inlet throttle restriction. On the outlet side, the nozzle spring chamber is connected to a chamber of the pressure booster via a line that contains an outlet throttle restriction.
    Type: Grant
    Filed: April 9, 2003
    Date of Patent: August 1, 2006
    Assignee: Robert Bosch GmbH
    Inventors: Martin Kropp, Hans-Christoph Magel, Manfred Mack, Christian Grimminger
  • Patent number: 7066400
    Abstract: A fuel injection system for internal combustion engines with a fuel injector that can be supplied from a high-pressure fuel source has an injection valve, with injection nozzles pointing toward the combustion chamber, and coaxial inner and outer nozzle needles assigned to the injection nozzles are triggerable as a function of pressure to open and close various injection cross sections at the injection nozzles. Each of the nozzle needless is assigned a respective damping piston, and the damping pistons are movable relative to one another and act on a damping chamber which can be made to communicate with a low-pressure return system via an outlet throttle. In addition to the damping chamber, a closing chamber is provided, to which an end face of the outer nozzle needle is exposed in the closing direction.
    Type: Grant
    Filed: March 2, 2005
    Date of Patent: June 27, 2006
    Assignee: Robert Bosch GmbH
    Inventors: Achim Brenk, Martin Kropp
  • Publication number: 20060005815
    Abstract: A fuel injection system for internal combustion engines, having a fuel injector that can be acted upon by a high-pressure fuel source includes a pressure booster, which contains a movable boosting element dividing a work chamber which can be made to communicate with the high-pressure source via a high-pressure line from a high-pressure chamber that acts on the fuel injector. The high-pressure from chamber is variable by filling and evacuating a differential pressure chamber of the pressure booster. A filter element is received in a line portion that branches off from the high-pressure line and is upstream of flow connections for filling the differential and high pressure chambers.
    Type: Application
    Filed: June 30, 2003
    Publication date: January 12, 2006
    Inventors: Hans-Christoph Magel, Martin Kropp
  • Publication number: 20050274828
    Abstract: The invention relates to a fuel injector for injecting fuel into a combustion chamber of an internal combustion engine. The fuel injector is in communication with a high-pressure reservoir for fuel and includes a pressure booster. The fuel injector is actuatable via a control valve and has an injection valve member, which is urged in the closing direction by at least one spring element, and associated with the injection valve member is a damping element that is movable independently of it. This damping element defines a damper chamber, and the injection valve member has a first needle part and a second needle part. Associated with the second needle part is a control chamber that can be connected to the system pressure side or the maximum pressure side.
    Type: Application
    Filed: June 10, 2005
    Publication date: December 15, 2005
    Inventors: Michael Kurz, Martin Kropp
  • Publication number: 20050263621
    Abstract: A fuel injector in injection systems for internal combustion engines having a valve body containing a control chamber that can be pressure-relieved and can be acted on with fuel via an inlet throttle and can be pressure-relieved via an outlet throttle. A first actuator can actuate a closing element. The valve body is connected to a holding body that has a nozzle body connected to it, which encompasses an injection valve element. In order to relieve the pressure in the control chamber, an additional, second outlet throttle is provided, whose closing element can be actuated either by an additional actuator or as a function of the power supply to a double-switching actuator.
    Type: Application
    Filed: July 10, 2003
    Publication date: December 1, 2005
    Inventors: Achim Brenk, Martin Kropp, Manfred Mack, Juergen Hammer, Reinhard Tampe, Heike Bastian
  • Publication number: 20050224600
    Abstract: A fuel injection apparatus having a fuel injector fed by a high-pressure fuel source and having an injection valve with injection nozzles associated with coaxial inner and outer nozzle needles can be actuated in a pressure-dependent manner to open and close various injection cross sections at the injection nozzles. A pressure surface of the outer nozzle needle is associated with a closing chamber. To actuate the outer nozzle needle, a first on/off valve can connect the closing chamber to a low-pressure/return system. The inner nozzle needle has a control piston whose pressure surface protrudes into a second control chamber, and a second on/off valve is can connect the control chamber to the low-pressure/return system so that when the second on/off valve is actuated, the pressure is relieved in the second control chamber. This permits a separate actuation of the outer nozzle needle and inner nozzle needle.
    Type: Application
    Filed: April 8, 2005
    Publication date: October 13, 2005
    Inventors: Achim Brenk, Martin Kropp, Hans-Christoph Magel
  • Publication number: 20050194468
    Abstract: A fuel injection system for internal combustion engines with a fuel injector that can be supplied from a high-pressure fuel source has an injection valve, with injection nozzles pointing toward the combustion chamber, and coaxial inner and outer nozzle needles assigned to the injection nozzles are triggerable as a function of pressure to open and close various injection cross sections at the injection nozzles. Each of the nozzle needless is assigned a respective damping piston, and the damping pistons are movable relative to one another and act on a damping chamber which can be made to communicate with a low-pressure return system via an outlet throttle. In addition to the damping chamber, a closing chamber is provided, to which an end face of the outer nozzle needle is exposed in the closing direction.
    Type: Application
    Filed: March 2, 2005
    Publication date: September 8, 2005
    Inventors: Achim Brenk, Martin Kropp
  • Patent number: D584190
    Type: Grant
    Filed: January 18, 2008
    Date of Patent: January 6, 2009
    Assignee: Volkswagen AG
    Inventors: Klaus Bischoff, Oliver Stefani, Martin Kropp
  • Patent number: D620840
    Type: Grant
    Filed: December 14, 2009
    Date of Patent: August 3, 2010
    Assignee: Volkswagen AG
    Inventors: Klaus Bischoff, Oliver Stefani, Martin Kropp
  • Patent number: D678126
    Type: Grant
    Filed: November 30, 2011
    Date of Patent: March 19, 2013
    Assignee: Volkswagen AG
    Inventors: Klaus Bischoff, Oliver Stefani, Martin Kropp