Patents by Inventor Daniel J. Mohr

Daniel J. Mohr 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: 12270355
    Abstract: An apparatus for a combustion cylinder of a reciprocating piston engine includes a combustion cylinder end face component including a first side configured to face the combustion cylinder and extending in a radial direction of the combustion cylinder and a pocket recessed into the first side and including a recessed pocket surface. The combustion cylinder end face component may be one of a piston and a cylinder head. A thermal barrier coating is inlaid in the pocket. The thermal barrier coating includes a ceramic-metallic layer directly coating the recessed pocket surface and a ceramic layer directly coating the ceramic-metallic layer and including an outer surface facing the combustion cylinder.
    Type: Grant
    Filed: June 14, 2023
    Date of Patent: April 8, 2025
    Assignee: Cummins Inc.
    Inventors: Daniel J. Mohr, Robert Earl Hoye, Timothy Shipp, Leonard W. Brancamp
  • Patent number: 12215650
    Abstract: A cylinder head includes novel designs for undercuts, contours of the outer enclosure, coolant jackets, and other cavities within an outer enclosure of the cylinder head. The cylinder head design enables the reduction of weight of the head while maintaining structural integrity of the head, and improves control of temperatures in intake side and exhaust side zones of the heads to improve operational efficiency of the engine. A method is provided for additive manufacturing of the cylinder head including the disclosed designs.
    Type: Grant
    Filed: May 17, 2021
    Date of Patent: February 4, 2025
    Assignee: Cummins Inc.
    Inventors: Robert Earl Hoye, Jeffrey D. Jones, Daniel J. Mohr, David M. Barnes, Timothy Shipp
  • Patent number: 12065959
    Abstract: Heating of the charge air in an intake is provided by a working fluid that is circulated through the intake to exchange heat with the charge air. The heated charge air can be used in response to a thermal management condition for an exhaust gas produced by operation of the internal combustion engine.
    Type: Grant
    Filed: September 9, 2022
    Date of Patent: August 20, 2024
    Assignee: Cummins Inc.
    Inventors: Timothy C. Ernst, Daniel J. Mohr
  • Publication number: 20240209810
    Abstract: A cylinder head includes novel designs for undercuts, contours of the outer enclosure, coolant jackets, and other cavities within an outer enclosure of the cylinder head. The cylinder head design enables the reduction of weight of the head while maintaining structural integrity of the head, and improves control of temperatures in intake side and exhaust side zones of the heads to improve operational efficiency of the engine. A method is provided for additive manufacturing of the cylinder head including the disclosed designs.
    Type: Application
    Filed: May 17, 2021
    Publication date: June 27, 2024
    Inventors: Robert Earl Hoye, Jeffrey D. Jones, Daniel J. Mohr, David M. Barnes, Timothy Shipp
  • Publication number: 20240084727
    Abstract: Heating of the charge air in an intake is provided by a working fluid that is circulated through the intake to exchange heat with the charge air. The heated charge air can be used in response to a thermal management condition for an exhaust gas produced by operation of the internal combustion engine.
    Type: Application
    Filed: September 9, 2022
    Publication date: March 14, 2024
    Inventors: Timothy C. Ernst, Daniel J. Mohr
  • Patent number: 11828252
    Abstract: An intake air circuit is structured to transmit intake air from a turbocharger compressor to an intake manifold of an engine. A charge air cooler (“CAC”), a bypass line, and a bypass heater are each positioned along the intake air circuit in parallel with each other. A first control valve is structured to controllably divert the intake air around the CAC. A second control valve is structured to controllably divert the intake air around at least one of the bypass line and the bypass heater. A controller operatively coupled to each of the engine, and the first and second control valves is structured to control each of the first and second control valves to cause the intake air to flow along a determined desired flow path based on each of measured ambient temperature and measured engine load.
    Type: Grant
    Filed: July 8, 2021
    Date of Patent: November 28, 2023
    Assignee: Cummins Inc.
    Inventors: J. Steven Kolhouse, Daniel J. Mohr, Adrian P. Dale, Samuel C. Geckler, Leon A. LaPointe, David J. Stroh, Anthony Kyle Perfetto, Robin J. Bremmer, Ryan Edward Schultz
  • Publication number: 20230332555
    Abstract: An apparatus for a combustion cylinder of a reciprocating piston engine includes a combustion cylinder end face component including a first side configured to face the combustion cylinder and extending in a radial direction of the combustion cylinder and a pocket recessed into the first side and including a recessed pocket surface. The combustion cylinder end face component may be one of a piston and a cylinder head. A thermal barrier coating is inlaid in the pocket. The thermal barrier coating includes a ceramic-metallic layer directly coating the recessed pocket surface and a ceramic layer directly coating the ceramic-metallic layer and including an outer surface facing the combustion cylinder.
    Type: Application
    Filed: June 14, 2023
    Publication date: October 19, 2023
    Inventors: Daniel J. Mohr, Robert Earl Hoye, Timothy Shipp, Leonard W. Brancamp, JR.
  • 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
  • Patent number: 11680532
    Abstract: Systems, apparatus, and methods are disclosed that include an internal combustion engine having a plurality of cylinders operable by a valve actuation mechanism. A cylinder deactivation operation is modified in response to determining a cyclical operation mode of the engine.
    Type: Grant
    Filed: August 30, 2021
    Date of Patent: June 20, 2023
    Assignee: Cummins Inc.
    Inventors: Jennifer Kay Light-Holets, Rohit Saha, Timothy Shipp, Daniel J. Mohr
  • 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: 20210388777
    Abstract: Systems, apparatus, and methods are disclosed that include an internal combustion engine having a plurality of cylinders operable by a valve actuation mechanism. A cylinder deactivation operation is modified in response to determining a cyclical operation mode of the engine.
    Type: Application
    Filed: August 30, 2021
    Publication date: December 16, 2021
    Inventors: Jennifer Kay Light-Holets, Rohit Saha, Timothy Shipp, Daniel J. Mohr
  • Publication number: 20210332777
    Abstract: An intake air circuit is structured to transmit intake air from a turbocharger compressor to an intake manifold of an engine. A charge air cooler (“CAC”), a bypass line, and a bypass heater are each positioned along the intake air circuit in parallel with each other. A first control valve is structured to controllably divert the intake air around the CAC. A second control valve is structured to controllably divert the intake air around at least one of the bypass line and the bypass heater. A controller operatively coupled to each of the engine, and the first and second control valves is structured to control each of the first and second control valves to cause the intake air to flow along a determined desired flow path based on each of measured ambient temperature and measured engine load.
    Type: Application
    Filed: July 8, 2021
    Publication date: October 28, 2021
    Applicant: CUMMINS INC.
    Inventors: J. Steven Kolhouse, Daniel J. Mohr, Adrian P. Dale, Samuel C. Geckler, Leon A. LaPointe, David J. Stroh, Anthony Kyle Perfetto, Robin J. Bremmer, Ryan Edward Schultz
  • Patent number: 11060468
    Abstract: An intake air circuit is structured to transmit intake air from a turbocharger compressor to an intake manifold of an engine. A charge air cooler (“CAC”), a bypass line, and a bypass heater are each positioned along the intake air circuit in parallel with each other. A first control valve is structured to controllably divert the intake air around the CAC. A second control valve is structured to controllably divert the intake air around at least one of the bypass line and the bypass heater. A controller operatively coupled to each of the engine, and the first and second control valves is structured to control each of the first and second control valves to cause the intake air to flow along a determined desired flow path based on each of measured ambient temperature and measured engine load.
    Type: Grant
    Filed: March 21, 2018
    Date of Patent: July 13, 2021
    Assignee: Cummins Inc.
    Inventors: J. Steven Kolhouse, Daniel J. Mohr, Adrian P. Dale, Samuel C. Geckler, Leon A. LaPointe, David J. Stroh, Anthony Kyle Perfetto, Robin J. Bremmer, Ryan Edward Schultz
  • Publication number: 20210108580
    Abstract: An intake air circuit is structured to transmit intake air from a turbocharger compressor to an intake manifold of an engine. A charge air cooler (“CAC”), a bypass line, and a bypass heater are each positioned along the intake air circuit in parallel with each other. A first control valve is structured to controllably divert the intake air around the CAC. A second control valve is structured to controllably divert the intake air around at least one of the bypass line and the bypass heater. A controller operatively coupled to each of the engine, and the first and second control valves is structured to control each of the first and second control valves to cause the intake air to flow along a determined desired flow path based on each of measured ambient temperature and measured engine load.
    Type: Application
    Filed: March 21, 2018
    Publication date: April 15, 2021
    Applicant: CUMMiNS INC.
    Inventors: J. Steven Kolhouse, Daniel J. Mohr, Adrian P. Dale, Samuel C. Geckler, Leon A. LaPointe, David J. Stroh, Anthony Kyle Perfetto, Robin J. Bremmer, Ryan Edward Schultz
  • 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
  • Patent number: 10138800
    Abstract: A system and method for condensation management in a low-pressure loop EGR system are provided. The system includes an EGR condensation temperature module configured to determine an EGR condensation temperature of recirculated exhaust gas upstream of an EGR cooler and an EGR coolant temperature controller communicably coupled to the EGR condensation temperature module. The EGR coolant temperature controller provides EGR coolant to the EGR cooler at or above the EGR condensation temperature. The system also includes a charge air condensation temperature module configured to determine a charge air condensation temperature of charge air upstream of a charge air cooler and a charge air coolant temperature controller communicably coupled to the charge air condensation temperature module. The charge air coolant temperature controller provides charge air coolant to the charge air cooler at or above the charge air condensation temperature.
    Type: Grant
    Filed: April 3, 2015
    Date of Patent: November 27, 2018
    Assignee: Cummins, Inc.
    Inventors: Leon A. LaPointe, Daniel J. Mohr, Edward J. Lyford-Pike, Ashish Gupta
  • Patent number: 9845772
    Abstract: A system and method for condensation management in a low-pressure loop EGR system are provided. The system includes an EGR condensation temperature module configured to determine an EGR condensation temperature of recirculated exhaust gas upstream of an EGR cooler and an EGR coolant temperature controller communicably coupled to the EGR condensation temperature module. The EGR coolant temperature controller provides EGR coolant to the EGR cooler at or above the EGR condensation temperature. The system also includes a charge air condensation temperature module configured to determine a charge air condensation temperature of charge air upstream of a charge air cooler and a charge air coolant temperature controller communicably coupled to the charge air condensation temperature module. The charge air coolant temperature controller provides charge air coolant to the charge air cooler at or above the charge air condensation temperature.
    Type: Grant
    Filed: April 30, 2015
    Date of Patent: December 19, 2017
    Assignee: Cummins, Inc.
    Inventors: Leon A. LaPointe, Daniel J. Mohr, Edward J. Lyford-Pike, Ashish Gupta