Patents by Inventor James Robert Mischler

James Robert Mischler 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: 20180238225
    Abstract: Various methods and systems are provided for maintaining combustion stability in a multi-fuel engine. In one example, a system comprises a first fuel system to deliver liquid fuel to at least one cylinder of an engine, a second fuel system to deliver gaseous fuel to the at least one cylinder, and a controller. The controller is configured to supply the gaseous fuel to the at least one cylinder, inject the liquid fuel to the at least one cylinder thereby to ignite the liquid fuel and the gaseous fuel in the at least one cylinder via compression-ignition, and adjust an amount of the gaseous fuel relative to an amount of the liquid fuel based on a measured parameter associated with auto-ignition of end gases subsequent to the compression-ignition of the liquid fuel.
    Type: Application
    Filed: February 6, 2018
    Publication date: August 23, 2018
    Inventors: Daniel Yerace, Adam Edgar Klingbeil, James Robert Mischler
  • Publication number: 20180223753
    Abstract: Various methods and systems are provided for estimating fresh intake air flow. In one example, a system comprises an engine having an intake manifold to receive fresh intake air and an exhaust gas recirculation (EGR) system to supply EGR to the intake manifold, where flow of EGR through the EGR system is controlled by one or more exhaust valves. The system further includes a controller configured to adjust a position of the one or more exhaust valves based on an estimated fresh intake air flow rate, where during a first set of operating conditions, the fresh intake air flow rate is estimated based on a total gas flow rate into the engine and further based on a current position of the one or more exhaust valves, intake manifold pressure, air-fuel ratio, and fuel flow to one or more cylinders of the engine.
    Type: Application
    Filed: March 30, 2018
    Publication date: August 9, 2018
    Inventors: Luke Michael HENRY, James Robert MISCHLER, David ZIELINSKI, Samuel Lyle HAZEN, Ralph WHEELAND
  • Patent number: 10030617
    Abstract: Various methods for controlling EGR rate are disclosed. In one embodiment, a method comprises routing at least a portion of exhaust from a first exhaust manifold to an intake manifold, and not to atmosphere, the first exhaust manifold exclusively coupled to a first cylinder group. The method further includes routing exhaust from at least one additional exhaust manifold coupled to a corresponding at least one additional cylinder group to atmosphere, and during a first engine operating condition where an engine fuel demand is below a threshold demand, not injecting fuel to each of a subset of cylinders in the first cylinder group while injecting fuel to a subset of all cylinders coupled to the at least one additional exhaust manifold, where a number of cylinders of the subset of cylinders in the first cylinder group decreases in response to an increase in a target EGR rate.
    Type: Grant
    Filed: April 18, 2016
    Date of Patent: July 24, 2018
    Assignee: General Electric Company
    Inventors: Omowoleola Chukuwuemeka Akinyemi, Adam Klingbeil, Neil Xavier Blythe, Shawn Michael Gallagher, James Robert Mischler, Luke Henry, Jennifer Lynn Jackson
  • Patent number: 10012153
    Abstract: A method for controlling an engine includes the steps of, in response to a transient operating event, determining a first amount of exhaust gas recirculation (EGR) that if provided to an intake of the engine would avoid turbocharger compressor surge in a turbocharger, determining a second amount of EGR that if provided to the intake would avoid turbocharger compressor choke in the turbocharger, and determining a third amount of EGR that if provided to the intake would avoid engine smoking, and adjusting EGR provided to the intake of the engine in accordance with the determined first, second, and third amounts.
    Type: Grant
    Filed: December 5, 2014
    Date of Patent: July 3, 2018
    Assignee: General Electric Company
    Inventors: Manthram Sivasubramaniam, Manoj Gokhale, Venkateswarlu Andra, Ankur Sinha, Sanketh Bhat, Luke Henry, James Robert Mischler, Greg Thomas Polkus
  • Publication number: 20180163614
    Abstract: Various methods and systems are provided for adjusting an amount of intake airflow diverted away from an intake manifold and to atmosphere in response to a temperature of exhaust entering a turbocharger turbine and a target pre-turbine temperature. In one example, an amount of intake airflow entering engine cylinders, and thus an air-fuel ratio entering the engine cylinders, may be controlled to maintain the temperature of exhaust entering the turbocharger turbine at the target pre-turbine temperature.
    Type: Application
    Filed: December 13, 2016
    Publication date: June 14, 2018
    Applicant: General Electric Company
    Inventors: Daniel Yerace, James Robert Mischler, Nathan Synnott Music
  • Patent number: 9964056
    Abstract: A method includes controlling an engine speed based on: intake manifold air temperature and/or intake manifold pressure one, or more, of the following data parameters: an engine load as a function of a fuel level, a fuel injecting timing, an intake oxygen concentration, a constituent concentration from the exhaust gas flow, an engine power, and an engine torque. The method also recirculates a portion of the exhaust gas flow to the combustion cylinders of the engine via a recirculation channel, as a function of intake manifold temperature and/or intake manifold pressure at which the engine is operated. An engine system, other methods, and a non-transitory computer readable medium encoded with a program, to enable a processor-based control unit to control aspects of the engine are also disclosed.
    Type: Grant
    Filed: September 18, 2015
    Date of Patent: May 8, 2018
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Roy James Primus, Omowoleola Chukwuemeka Akinyemi, Thomas Michael Lavertu, James Robert Mischler, Venu Gummadavelli Gupta
  • Patent number: 9951701
    Abstract: Various methods and systems are provided for estimating fresh intake air flow. In one example, a system comprises an engine having an intake manifold to receive fresh intake air and an exhaust gas recirculation (EGR) system to supply EGR to the intake manifold, where flow of EGR through the EGR system is controlled by one or more exhaust valves. The system further includes a controller configured to adjust a position of the one or more exhaust valves based on an estimated fresh intake air flow rate, where during a first set of operating conditions, the fresh intake air flow rate is estimated based on a total gas flow rate into the engine and further based on a current position of the one or more exhaust valves, intake manifold pressure, air-fuel ratio, and fuel flow to one or more cylinders of the engine.
    Type: Grant
    Filed: September 22, 2014
    Date of Patent: April 24, 2018
    Assignee: General Electric Company
    Inventors: Luke Michael Henry, James Robert Mischler, David Zielinski, Samuel Lyle Hazen, Ralph Wheeland
  • Patent number: 9920683
    Abstract: Various methods and systems are provided for maintaining combustion stability in a multi-fuel engine. In one example, a system comprises a first fuel system to deliver liquid fuel to at least one cylinder of an engine, a second fuel system to deliver gaseous fuel to the at least one cylinder, and a controller. The controller is configured to supply the gaseous fuel to the at least one cylinder, inject the liquid fuel to the at least one cylinder thereby to ignite the liquid fuel and the gaseous fuel in the at least one cylinder via compression-ignition, and adjust an amount of the gaseous fuel relative to an amount of the liquid fuel based on a measured parameter associated with auto-ignition of end gases subsequent to the compression-ignition of the liquid fuel.
    Type: Grant
    Filed: February 26, 2014
    Date of Patent: March 20, 2018
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Daniel Yerace, Adam Edgar Klingbeil, James Robert Mischler
  • Patent number: 9920715
    Abstract: Various methods and systems are provided for adjusting a flow of exhaust gas in an exhaust gas recirculation system. In one embodiment, a method for an engine comprises controlling a flow of exhaust gas through an exhaust gas recirculation system of an engine system based on a choke level of a turbocharger. For example, the flow of exhaust gas in the exhaust gas recirculation system may be reduced to within a threshold of a choke level of the turbocharger, in response to an ambient condition.
    Type: Grant
    Filed: January 28, 2013
    Date of Patent: March 20, 2018
    Assignee: General Electric Company
    Inventors: James Robert Mischler, Luke Henry, Greg Thomas Polkus
  • Publication number: 20180058310
    Abstract: Various systems and methods are provided for controlling operation of a turbocharger compressor. In one example, a system includes a turbocharger including a turbine positioned in an exhaust passage and a compressor positioned in an intake passage, an engine bypass passage having an inlet fluidically coupled to an outlet of the compressor and an outlet fluidically coupled to an inlet of the turbine, an engine bypass valve to control flow through the engine bypass passage, and a controller configured to adjust a position of the engine bypass valve to maintain compressor operation within a designated compressor efficiency region.
    Type: Application
    Filed: August 24, 2016
    Publication date: March 1, 2018
    Inventors: James Robert MISCHLER, Thomas Michael LAVERTU, Jared Davis VAUGHN, Alok KUMAR, Richard James SCOTT
  • Patent number: 9863342
    Abstract: Various methods and systems are provided for adjusting an air-fuel ratio for combustion in an engine. In one embodiment, a method for an engine (e.g., a method for controlling an engine system) comprises responding to a sensed change in a load on the engine, or indications of engine knock or misfire, by one or more of: altering a speed of the engine, adjusting a fueling flow rate into at least one cylinder of the engine, and adjusting a position of a valve in a bypass passage configured to direct compressed intake air away from cylinders of the engine to obtain a determined air-fuel ratio; and thereby maintaining an air-fuel ratio in a determined range.
    Type: Grant
    Filed: September 25, 2015
    Date of Patent: January 9, 2018
    Assignee: General Electric Company
    Inventors: Chetan Sharadchandra Tulapurkar, Manoj Gokhale, Roy James Primus, Leslie Orin Trask, James Robert Mischler, Adam Edgar Klingbeil, Thomas Michael Lavertu
  • Publication number: 20180003070
    Abstract: Various methods and systems are provided for generating exhaust energy and converting exhaust energy to electrical energy while an engine is not running. In one example, a system for an engine comprises: a first turbocharger including a first compressor driven by a first turbine, the first turbine disposed in an exhaust of the engine; a fuel burner fluidly coupled to the exhaust upstream of the first turbine; a generator coupled to one of the first turbine or an auxiliary, second turbine fluidly coupled to the exhaust downstream of the fuel burner; and one or more bypass valves configured to adjust a flow of air that bypasses the engine and is delivered to the fuel burner.
    Type: Application
    Filed: June 30, 2016
    Publication date: January 4, 2018
    Applicant: General Electric Company
    Inventors: James Robert Mischler, Roy James Primus, Thomas Michael Lavertu
  • Publication number: 20170370280
    Abstract: Various methods and systems are provided for a detecting surge of a turbocharger in an engine system. In one example, system includes a turbocharger including a compressor coupled to a turbine and a controller and sensor system configured to detect a surge event of the turbocharger based on at least one of a rate of change of a pressure measured by sensors downstream of the compressor and a measured rate of change of turbine speed, store operational data associated with the surge event in memory of the controller, and determine a performance of the turbocharger based at least in part on one or more of a cumulative number of detected surge events, a magnitude of detected surge events, or associated operational data.
    Type: Application
    Filed: June 23, 2016
    Publication date: December 28, 2017
    Applicant: General Electric Company
    Inventors: Vincent Waikeet Lock, James Robert Mischler, Maryam Abdollahi, Joseph Audu Ishaku, Richard James Scott, Christian Roland Tollefson
  • Patent number: 9822694
    Abstract: Various methods and systems are provided for controlling air flow in a two-stage turbocharger. In one example, an engine method comprises adjusting one or more exhaust gas recirculation valves to maintain a first turbocharger within a first air flow range, and adjusting a turbocharger bypass valve to maintain a second turbocharger within a second air flow range.
    Type: Grant
    Filed: August 9, 2012
    Date of Patent: November 21, 2017
    Assignee: General Electric Company
    Inventors: James Robert Mischler, Daniel Edward Loringer, Neil Xavier Blythe, Luke Henry, Matthew John Malone, Greg Thomas Polkus
  • Patent number: 9702297
    Abstract: Various methods and systems are provided for adjusting a turbine boost control actuator based on a single common reference value. In one example, a method for an engine includes adjusting a turbine boost control actuator to control an intake manifold pressure to a limit, the limit based at least in part on one or more of peak cylinder pressure, turbine speed, and a pressure difference across a turbine.
    Type: Grant
    Filed: October 6, 2014
    Date of Patent: July 11, 2017
    Assignee: General Electric Company
    Inventors: Luke Michael Henry, James Robert Mischler, Samuel Lyle Hazen
  • Publication number: 20170152806
    Abstract: Various methods and systems are provided for controlling emissions. In one example, a controller is configured to respond to a sensed or estimated intake oxygen fraction by controlling an exhaust gas recirculation (EGR) amount supplied to an engine to maintain a level of particulate matter (PM) in a determined PM range and a level of NOx in a determined NOx range, and adjusting a target intake manifold oxygen fraction or target intake manifold EGR fraction in response to a NOx sensor feedback signal.
    Type: Application
    Filed: December 1, 2015
    Publication date: June 1, 2017
    Inventors: James Robert Mischler, Luke Michael Henry, David Zielinski
  • Patent number: 9631569
    Abstract: A method involves comparing a determined operating parameter of an engine, with a predefined operating parameter. The method further involves controlling a fuel source and an ignition source of the engine so as to operate at least one engine cylinder in a skip fire mode for at least one cycle of a crank shaft when the determined operating parameter is greater than the predefined operating parameter. The controlling involves transitioning the fuel source from a normal mode to the skip fire mode for the at least one cycle of the crank shaft either before transitioning the ignition source from the normal mode to the skip fire mode or when the ignition source is operated in the normal mode.
    Type: Grant
    Filed: August 4, 2014
    Date of Patent: April 25, 2017
    Assignee: General Electric Company
    Inventors: Adam Edgar Klingbeil, Jennifer Lynn Jackson, James Robert Mischler, Kevin Michael Fisher
  • Patent number: 9611794
    Abstract: Various systems and method for controlling exhaust gas recirculation (EGR) in an internal combustion engine are provided. In one embodiment, a method includes during a first operating condition, directing exhaust gas from a first cylinder group into an engine air intake stream and directing substantially no exhaust gas from a second cylinder group to the engine air intake stream. The method further includes during a second operating condition, directing exhaust gas from the second cylinder group through a turbocharger bypass into the engine air intake stream and reducing a fuel injection amount of the first cylinder group relative to a fuel injection amount of the second cylinder group.
    Type: Grant
    Filed: July 31, 2012
    Date of Patent: April 4, 2017
    Assignee: General Electric Company
    Inventors: Neil Xavier Blythe, Shawn Michael Gallagher, James Robert Mischler, Luke Henry
  • Publication number: 20170089278
    Abstract: Various methods and systems are provided for adjusting an air-fuel ratio for combustion in an engine. In one embodiment, a method for an engine (e.g., a method for controlling an engine system) comprises responding to a sensed change in a load on the engine, or indications of engine knock or misfire, by one or more of: altering a speed of the engine, adjusting a fueling flow rate into at least one cylinder of the engine, and adjusting a position of a valve in a bypass passage configured to direct compressed intake air away from cylinders of the engine to obtain a determined air-fuel ratio; and thereby maintaining an air-fuel ratio in a determined range.
    Type: Application
    Filed: September 25, 2015
    Publication date: March 30, 2017
    Inventors: Chetan Sharadchandra Tulapurkar, Manoj Gokhale, Roy James Primus, Leslie Orin Trask, James Robert Mischler, Adam Edgar Klingbeil, Thomas Michael Lavertu
  • Publication number: 20170030281
    Abstract: Various systems are provided for delivering fuel to an engine. In one example, a system includes a controller and a fluid system configured to maintain a fluid at a pressure downstream of a check valve. The controller may be configured to determine if a leak is present in the fluid system based on a first pressure decay rate of the fluid system, and responsive to identifying that a leak is present in the fluid system, differentiate between an internal leak and an external leak based on a leak flow rate as fluid system pressure decreases.
    Type: Application
    Filed: July 29, 2015
    Publication date: February 2, 2017
    Inventors: Jeffrey David Willis, James Robert Mischler, Leslie Orin Trask, Daniel Yerace