Patents by Inventor Edward J. Keating

Edward J. Keating 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: 10995707
    Abstract: An internal combustion gasoline engine includes an air heater coupled to an intake duct of the engine in a heat transfer relationship with air in the intake duct. A combustion pre-chamber is also formed in the head of the engine. The pre-chamber is at least partially separated from the combustion chamber by a wall. One or more apertures are formed through the wall and provide fluid communication paths from the combustion chamber to the pre-chamber, feeding a mixture of air and fuel from the combustion chamber to the pre-chamber. The apertures further define a plurality of combustion paths allowing ignited fuel and air from the pre-chamber to efficiently enter and combust the fuel and air mixture within the combustion chamber. The air heater and the combustion pre-chamber increase combustion efficiency from a first efficiency level to a second efficiency level greater than the first efficiency level.
    Type: Grant
    Filed: December 18, 2019
    Date of Patent: May 4, 2021
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventor: Edward J Keating
  • Publication number: 20200284227
    Abstract: An exhaust gas recirculation (EGR) system with independent intake air compressor includes an engine having at least one cylinder communicating with a cylinder exhaust passage. A bypass valve positioned in the cylinder exhaust passage when selectively aligned in a first position directs all exhaust from the at least one cylinder to an exhaust passage and when selectively aligned in a second position directs all exhaust from the at least one cylinder into an EGR dedicated passage. An intake manifold is in communication with the EGR dedicated passage. An electrically powered eBoost compressor when activated receives atmospheric air and generates a required boosted air pressure flow during a mid-load engine operation portion and a high-load engine operation portion for introduction into the intake manifold independently of the EGR dedicated passage. The eBoost compressor is deactivated during a low-load engine operation portion.
    Type: Application
    Filed: March 4, 2019
    Publication date: September 10, 2020
    Inventors: Edward J. Keating, Prabjot Nanua
  • Patent number: 10690086
    Abstract: A pushrod valvetrain combustion system assembly for an internal combustion engine includes a two-valve pushrod assembly and a cylinder top that forms a portion of a cylinder head. The cylinder top has a single intake port, a single exhaust port, a spark plug bore, and a fuel injector bore. The pushrod assembly includes an intake valve positioned in the intake port and an exhaust valve positioned in the exhaust port. The intake port and exhaust port are positioned adjacent each other and are positioned along an axis that intersects a center point of each of the ports. The intersecting axis is rotated relative to a centerline of the crankshaft of the engine, providing space for the spark plug bore and fuel injector bore to both be located in the cylinder top on a same side of the intersecting axis.
    Type: Grant
    Filed: August 16, 2018
    Date of Patent: June 23, 2020
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Edward J. Keating, Kenneth M. Eastman, Erwan R. Gautier
  • Publication number: 20200173317
    Abstract: A cylinder head assembly for an internal combustion engine includes a main body, a valve seat insert, and at least one flow passage extending through the main body. The main body may be formed from a first material and defines a recess configured to cooperate with an associated cylinder bore and piston to form a combustion chamber. The flow passage may extend through the main body from the recess. The valve seat insert may be disposed within the recess proximate to an end of the flow passage. The valve seat insert includes a thermally conductive layer of powdered metal having an upper side disposed adjacent to the main body, a hardness layer of powdered metal, and a machining layer of powdered metal.
    Type: Application
    Filed: December 4, 2018
    Publication date: June 4, 2020
    Inventors: Edward J. Keating, Brian W. Geiser
  • Patent number: 10626812
    Abstract: A multi-cylinder engine includes first and second subsets of cylinders. A dedicated-cylinder exhaust gas recirculation (EGR) system is associated with the second subset of cylinders. A plasma ignition system is disposed in the second subset of cylinders. A controller operates the plasma ignition system to control the plasma igniters to execute plasma discharges in the second subset of cylinders to generate residual exhaust gas, which is recirculated through the dedicated-cylinder EGR system to the intake air system for introduction into intake air.
    Type: Grant
    Filed: February 2, 2017
    Date of Patent: April 21, 2020
    Assignee: GM Global Technology Operations LLC
    Inventors: Cherian A. Idicheria, Edward J. Keating, Paul M. Najt, Richard S. Davis
  • Publication number: 20200056562
    Abstract: A pushrod valvetrain combustion system assembly for an internal combustion engine includes a two-valve pushrod assembly and a cylinder top that forms a portion of a cylinder head. The cylinder top has a single intake port, a single exhaust port, a spark plug bore, and a fuel injector bore. The pushrod assembly includes an intake valve positioned in the intake port and an exhaust valve positioned in the exhaust port. The intake port and exhaust port are positioned adjacent each other and are positioned along an axis that intersects a center point of each of the ports. The intersecting axis is rotated relative to a centerline of the crankshaft of the engine, providing space for the spark plug bore and fuel injector bore to both be located in the cylinder top on a same side of the intersecting axis.
    Type: Application
    Filed: August 16, 2018
    Publication date: February 20, 2020
    Inventors: Edward J. Keating, Kenneth M. Eastman, Erwan R. Gautier
  • Patent number: 10233849
    Abstract: An engine assembly includes an engine block defining a cylinder, an exhaust system, and an exhaust gas recirculation system. A first exhaust valve is configured to control fluid communication from the cylinder to the exhaust system. A second exhaust valve is configured to control fluid communication from the cylinder to the exhaust gas recirculation system. The second exhaust valve is selectively activatable and deactivatable independently of the first exhaust valve.
    Type: Grant
    Filed: June 24, 2016
    Date of Patent: March 19, 2019
    Assignee: GM Global Technology Operations LLC
    Inventor: Edward J. Keating
  • Patent number: 10100760
    Abstract: A multi-cylinder spark-ignition internal combustion engine (engine) that includes a dedicated-cylinder exhaust gas recirculation (EGR) system is described. The dedicated-cylinder EGR system includes a controllable exhaust gas diverter valve that selectively diverts all exhaust gas produced by one of the cylinders to an air intake system of the engine. A method for controlling the engine includes monitoring a parameter associated with operation of the dedicated-cylinder EGR system. Upon detecting a change in the parameter that indicates a change in operation of the dedicated-cylinder EGR system, a controller controls operation of the internal combustion engine to reduce an effective cylinder compression ratio.
    Type: Grant
    Filed: December 4, 2014
    Date of Patent: October 16, 2018
    Assignee: GM Global Technology Operations LLC
    Inventor: Edward J. Keating
  • Publication number: 20180216550
    Abstract: A multi-cylinder engine includes first and second subsets of cylinders. A dedicated-cylinder exhaust gas recirculation (EGR) system is associated with the second subset of cylinders. A plasma ignition system is disposed in the second subset of cylinders. A controller operates the plasma ignition system to control the plasma igniters to execute plasma discharges in the second subset of cylinders to generate residual exhaust gas, which is recirculated through the dedicated-cylinder EGR system to the intake air system for introduction into intake air.
    Type: Application
    Filed: February 2, 2017
    Publication date: August 2, 2018
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Cherian A. Idicheria, Edward J. Keating, Paul M. Najt, Richard S. Davis
  • Publication number: 20180156164
    Abstract: Provided herein are turbocharger manifolds, and turbocharger and exhaust gas recirculation (EGR) systems incorporating the same. The manifold comprises a body, at least one non-dedicated EGR vein, a dedicated EGR vein, and an EGR bypass valve in fluid communication with the dedicated EGR vein, wherein the dedicated EGR vein converges with the at least one non-dedicated EGR veins downstream from the EGR bypass valve. The dedicated EGR vein is in fluid communication with an EGR conduit. The EGR bypass valve can selectively allow or prevent fluid communication between the dedicated EGR vein and the EGR conduit. The EGR bypass valve can comprise a two-way valve having a gate movable from a first position to a second position. The manifold can comprise a one-piece construction with a turbocharger turbine housing.
    Type: Application
    Filed: December 2, 2016
    Publication date: June 7, 2018
    Inventors: Edward J. Keating, Prabjot Nanua
  • Patent number: 9957911
    Abstract: An engine control system of a vehicle includes a fuel control module that controls fuel injection of a first cylinder of an engine based on a first target air/fuel ratio that is fuel lean relative to a stoichiometric air/fuel ratio and that controls fuel injection of a second cylinder of the engine based on a second target air/fuel ratio that is fuel rich relative to stoichiometry. The first cylinder outputs exhaust to a first three way catalyst (TWC), and the second cylinder outputs exhaust to an exhaust gas recirculation (EGR) valve. An EGR control module controls opening of the EGR valve to: (i) a second TWC that reacts with nitrogen oxides (NOx) in the exhaust and outputs ammonia to a selective catalytic reduction (SCR) catalyst; and (ii) a conduit that recirculates exhaust back to an intake system of the engine.
    Type: Grant
    Filed: February 18, 2016
    Date of Patent: May 1, 2018
    Assignees: GM GLOBAL TECHNOLOGY OPERATIONS LLC, U.S. Department of Energy
    Inventors: David P. Sczomak, Kushal Narayanaswamy, Edward J. Keating
  • Publication number: 20180112633
    Abstract: A multi-cylinder spark-ignition internal combustion engine includes a plurality of first and second intake valves disposed between the air intake system and a corresponding plurality of engine cylinders. The engine also includes a dedicated-cylinder exhaust gas recirculation (EGR) system including an exhaust runner fluidly connected between exhaust valve(s) of one of the cylinders and the air intake system of the engine. A controllable intake valve activation system is configured to control openings of the plurality of first and second intake valves. A controller is operatively connected to the engine and the controllable intake valve activation system, and includes an instruction set to monitor operation of the engine, and control openings of the plurality of first intake valves and control openings of the plurality of second intake valves to generate in-cylinder mixing of a cylinder charge that achieves combustion stability for an engine speed/load operating point.
    Type: Application
    Filed: October 20, 2016
    Publication date: April 26, 2018
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Edward J. Keating, Alan W. Hayman
  • Patent number: 9850834
    Abstract: A method of operating a gasoline engine having a first subset of cylinders and a second subset of cylinders includes providing a flow of compressed air from a single-sequential compressor to the engine, selectively deactivating the first subset of cylinders, and igniting gasoline mixed with the compressed air in the second subset of cylinders. The single-sequential compressor includes a dual sided impeller having a first blade arrangement in fluid communication with a first air inlet, and an opposing second blade arrangement in fluid communication with a second air inlet. Additionally, deactivating the first subset of cylinders includes sealing the first subset of cylinders such that the flow of compressed air is provided only to the second subset of cylinders.
    Type: Grant
    Filed: January 27, 2016
    Date of Patent: December 26, 2017
    Assignee: GM Global Technology Operations LLC
    Inventor: Edward J. Keating
  • Patent number: 9810173
    Abstract: An engine assembly includes a cylinder head having an intake side and an exhaust side opposite the intake side. The cylinder head has an intake port, an exhaust port, and a combustion chamber in fluid communication with the intake port and the exhaust port. The engine assembly further includes a port fuel injector coupled to the cylinder head. The port fuel injector is disposed closer to the exhaust side than to the intake side of the cylinder head. Further, the port fuel injector is fluid communication with the intake port to allow fuel to be injected directly into the intake port. The engine assembly further includes a direct fuel injector coupled to the cylinder head. The direct injector is in fluid communication with the combustion chamber to allow fuel to be injected directly into the combustion chamber.
    Type: Grant
    Filed: November 18, 2015
    Date of Patent: November 7, 2017
    Assignee: GM Global Technology Operations LLC
    Inventors: Alan W. Hayman, Edward J. Keating, Rodney E. Baker
  • Publication number: 20170241364
    Abstract: An engine control system of a vehicle includes a fuel control module that controls fuel injection of a first cylinder of an engine based on a first target air/fuel ratio that is fuel lean relative to a stoichiometric air/fuel ratio and that controls fuel injection of a second cylinder of the engine based on a second target air/fuel ratio that is fuel rich relative to stoichiometry. The first cylinder outputs exhaust to a first three way catalyst (TWC), and the second cylinder outputs exhaust to an exhaust gas recirculation (EGR) valve. An EGR control module controls opening of the EGR valve to: (i) a second TWC that reacts with nitrogen oxides (NOx) in the exhaust and outputs ammonia to a selective catalytic reduction (SCR) catalyst; and (ii) a conduit that recirculates exhaust back to an intake system of the engine.
    Type: Application
    Filed: February 18, 2016
    Publication date: August 24, 2017
    Inventors: David P. SCZOMAK, Kushal NARAYANASWAMY, Edward J. KEATING
  • Publication number: 20170138295
    Abstract: An engine assembly includes a cylinder head having an intake side and an exhaust side opposite the intake side. The cylinder head has an intake port, an exhaust port, and a combustion chamber in fluid communication with the intake port and the exhaust port. The engine assembly further includes a port fuel injector coupled to the cylinder head. The port fuel injector is disposed closer to the exhaust side than to the intake side of the cylinder head. Further, the port fuel injector is fluid communication with the intake port to allow fuel to be injected directly into the intake port. The engine assembly further includes a direct fuel injector coupled to the cylinder head. The direct injector is in fluid communication with the combustion chamber to allow fuel to be injected directly into the combustion chamber.
    Type: Application
    Filed: November 18, 2015
    Publication date: May 18, 2017
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Alan W. Hayman, Edward J. Keating, Rodney E. Baker
  • Publication number: 20170058823
    Abstract: A cylinder head defines an inlet port having an exit. A valve seat insert defines a seat cut surface that is disposed adjacent to the exit of the inlet port. A cross section of the inlet port parallel to a centerline of the inlet port defines a long turn edge of the inlet port cross section. The long turn edge of the inlet port cross section defines a flow path trajectory of the inlet port. The seat cut surface and the flow path trajectory are substantially aligned to extend the flow path trajectory of the long turn edge of the inlet port cross section across the seat cut surface.
    Type: Application
    Filed: August 24, 2015
    Publication date: March 2, 2017
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Alan W. Hayman, Kenneth M. Eastman, Edward J. Keating, Erwan Gautier
  • Publication number: 20160326992
    Abstract: An internal combustion engine includes an engine structure defining a plurality of cylinders. One of the plurality of cylinders is a dedicated exhaust gas recirculation cylinder wherein the exhaust passage in communication with the dedicated exhaust gas recirculation cylinder is an exhaust gas recirculation passage that is in communication with an intake manifold that is in communication with the plurality of intake passages. An exhaust gas recirculation cooler is in communication with the exhaust gas recirculation passage. A charge air cooler is in communication with an inlet air/exhaust gas recirculation mixer. A condensate collection vessel is provided for collecting condensate from one or both of the exhaust gas recirculation cooler and the charge air cooler. An injection system injects condensate from the condensate collection vessel into the plurality of cylinders.
    Type: Application
    Filed: May 6, 2015
    Publication date: November 10, 2016
    Inventor: Edward J. KEATING
  • Publication number: 20160305350
    Abstract: An engine assembly includes an engine block defining a cylinder, an exhaust system, and an exhaust gas recirculation system. A first exhaust valve is configured to control fluid communication from the cylinder to the exhaust system. A second exhaust valve is configured to control fluid communication from the cylinder to the exhaust gas recirculation system. The second exhaust valve is selectively activatable and deactivatable independently of the first exhaust valve.
    Type: Application
    Filed: June 24, 2016
    Publication date: October 20, 2016
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventor: Edward J. Keating
  • Publication number: 20160258369
    Abstract: An internal combustion engine comprises a first engine bank and a second engine bank. A first intake valve is disposed in an intake port of a cylinder of the first engine bank, and is configured for metering the first flow of combustion air by periodically opening and closing according to a first intake valve lift and duration characteristic. A variable valve train control mechanism is configured for affecting the first intake valve lift and duration characteristic. Either a lift or duration of the first intake valve is modulated so as to satisfy an EGR control criterion.
    Type: Application
    Filed: May 17, 2016
    Publication date: September 8, 2016
    Inventors: Alan W. Hayman, Robert S. McAlpine, Edward J. Keating