Patents by Inventor David ECKROTH

David ECKROTH 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: 11686239
    Abstract: An intake manifold is provided. A first inlet is structured to receive pressurized intake air from a turbocharger. A second inlet is structured to receive exhaust gas recirculation gas from an exhaust gas recirculation system. A third inlet is structured to receive fuel from a fuel line. A plurality of outlets are structured to be fluidly coupled to an engine. An intake manifold passage extends between each of the first, second, and third inlets, and the plurality of outlets. The intake manifold passage is shaped so as to cause at least two reversals in flow direction of each of the intake air, the exhaust gas recirculation gas, and the fuel through the intake manifold passage so as to improve mixing of each of the intake air, the exhaust gas recirculation gas, and the fuel.
    Type: Grant
    Filed: April 8, 2022
    Date of Patent: June 27, 2023
    Assignee: Cummins Inc.
    Inventors: Daniel J. Mohr, Bogdan V. Pavlov, Nikhil J. Ajotikar, Yi-Cheng Chen, David Eckroth
  • Publication number: 20220228521
    Abstract: An exhaust manifold comprises a plurality of exhaust intake conduits structured to be fluidly coupled to an engine and receive exhaust gas from a corresponding cylinder of the engine. At least one exhaust intake conduit provides a reduction in an exhaust intake conduit cross-sectional area from an inlet to an outlet. A plurality of bends are each defined by a respective one of the exhaust intake conduit outlets. An exhaust intake manifold is fluidly coupled to the exhaust intake manifold and defines an exhaust intake manifold flow axis. Each of the plurality of bends is shaped so as to define an angle of approach of exhaust gas flowing therethrough. A first angle of approach of the first bend relative to the exhaust intake manifold flow axis is smaller than a second angle of approach of an inner second bend.
    Type: Application
    Filed: April 8, 2022
    Publication date: July 21, 2022
    Applicant: CUMMINS INC.
    Inventors: Daniel J. Mohr, Bogdan V. Pavlov, Nikhil J. Ajotikar, Yi-cheng Chen, David Eckroth
  • Patent number: 11319860
    Abstract: An exhaust manifold comprises a plurality of exhaust intake conduits structured to be fluidly coupled to an engine and receive exhaust gas from a corresponding cylinder of the engine. At least one exhaust intake conduit provides a reduction in an exhaust intake conduit cross-sectional area from an inlet to an outlet. A plurality of bends are each defined by a respective one of the exhaust intake conduit outlets. An exhaust intake manifold is fluidly coupled to the exhaust intake manifold and defines an exhaust intake manifold flow axis. Each of the plurality of bends is shaped so as to define n angle of approach of exhaust gas flowing therethrough. A first angle of approach of the first bend relative to the exhaust intake manifold flow axis is smaller than a second angle of approach of an inner second bend.
    Type: Grant
    Filed: June 1, 2020
    Date of Patent: May 3, 2022
    Assignee: Cummins Inc.
    Inventors: Daniel J. Mohr, Bogdan V. Pavlov, Nikhil J. Ajotikar, Yi-cheng Chen, David Eckroth
  • Publication number: 20200300150
    Abstract: An exhaust manifold comprises a plurality of exhaust intake conduits structured to be fluidly coupled to an engine and receive exhaust gas from a corresponding cylinder of the engine. At least one exhaust intake conduit provides a reduction in an exhaust intake conduit cross-sectional area from an inlet to an outlet. A plurality of bends are each defined by a respective one of the exhaust intake conduit outlets. An exhaust intake manifold is fluidly coupled to the exhaust intake manifold and defines an exhaust intake manifold flow axis. Each of the plurality of bends is shaped so as to define n angle of approach of exhaust gas flowing therethrough. A first angle of approach of the first bend relative to the exhaust intake manifold flow axis is smaller than a second angle of approach of an inner second bend.
    Type: Application
    Filed: June 1, 2020
    Publication date: September 24, 2020
    Applicant: CUMMINS INC.
    Inventors: Daniel J. Mohr, Bogdan V. Pavlov, Nikhil J. Ajotikar, Yi-cheng Chen, David Eckroth
  • Patent number: 10704449
    Abstract: An exhaust manifold comprises a plurality of exhaust intake conduits structured to be fluidly coupled to an engine and receive exhaust gas from a corresponding cylinder of the engine. At least one exhaust intake conduit provides a reduction in an exhaust intake conduit cross-sectional area from an inlet to an outlet. A plurality of bends are each defined by a respective one of the exhaust intake conduit outlets. An exhaust intake manifold is fluidly coupled to the exhaust intake manifold and defines an exhaust intake manifold flow axis. Each of the plurality of bends is shaped so as to define an angle of approach of exhaust gas flowing therethrough. A first angle of approach of the first bend relative to the exhaust intake manifold flow axis is smaller than a second angle of approach of an inner second bend.
    Type: Grant
    Filed: February 1, 2017
    Date of Patent: July 7, 2020
    Assignee: Cummins Inc.
    Inventors: Daniel J. Mohr, Bogdan V. Pavlov, Nikhil J. Ajotikar, Yi-cheng Chen, David Eckroth
  • Publication number: 20190032536
    Abstract: An exhaust manifold comprises a plurality of exhaust intake conduits structured to be fluidly coupled to an engine and receive exhaust gas from a corresponding cylinder of the engine. At least one exhaust intake conduit provides a reduction in an exhaust intake conduit cross-sectional area from an inlet to an outlet. A plurality of bends are each defined by a respective one of the exhaust intake conduit outlets. An exhaust intake manifold is fluidly coupled to the exhaust intake manifold and defines an exhaust intake manifold flow axis. Each of the plurality of bends is shaped so as to define an angle of approach of exhaust gas flowing therethrough. A first angle of approach of the first bend relative to the exhaust intake manifold flow axis is smaller than a second angle of approach of an inner second bend.
    Type: Application
    Filed: February 1, 2017
    Publication date: January 31, 2019
    Applicant: Cummins Inc.
    Inventors: Daniel J. MOHR, Bogdan V. PAVLOV, Nikhil J. AJOTIKAR, Yi-cheng CHEN, David ECKROTH