Patents by Inventor Rodney E. Baker

Rodney E. Baker 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: 10787973
    Abstract: A internal combustion engine comprises an engine block defining a cylinder bore, and a piston slideably supported within the cylinder bore. The piston slides reciprocally within the cylinder bore throughout an engine cycle through a piston compression stroke having a compression stroke length and a piston expansion stroke having an expansion stroke length. A crankshaft is rotatably supported by the engine block and rotatable about a crank axis, and a drive gear is co-axially mounted on the crankshaft. A control shaft is rotatably supported by the engine block and rotatable about a control axis that is parallel to and distal from the crank axis. A driven gear is coaxially mounted on the control shaft. A link rod is rotatably connected to the crankshaft and rotatable relative to the crankshaft about an axis that is parallel to and distal from the crank axis.
    Type: Grant
    Filed: February 4, 2019
    Date of Patent: September 29, 2020
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Ryan M. Heinbuch, Rodney E. Baker, Justin E. Ketterer
  • Publication number: 20200248637
    Abstract: A internal combustion engine comprises an engine block defining a cylinder bore, and a piston slideably supported within the cylinder bore. The piston slides reciprocally within the cylinder bore throughout an engine cycle through a piston compression stroke having a compression stroke length and a piston expansion stroke having an expansion stroke length. A crankshaft is rotatably supported by the engine block and rotatable about a crank axis, and a drive gear is co-axially mounted on the crankshaft. A control shaft is rotatably supported by the engine block and rotatable about a control axis that is parallel to and distal from the crank axis. A driven gear is coaxially mounted on the control shaft. A link rod is rotatably connected to the crankshaft and rotatable relative to the crankshaft about an axis that is parallel to and distal from the crank axis.
    Type: Application
    Filed: February 4, 2019
    Publication date: August 6, 2020
    Inventors: Ryan M. Heinbuch, Rodney E. Baker, Justin E. Ketterer
  • Publication number: 20190323390
    Abstract: An engine variable compression ratio arrangement can be equipped in an internal combustion engine. The engine variable compression ratio arrangement includes a planetary gear set. The planetary gear set receives rotational drive input from an engine crankshaft, and the planetary gear set transmits rotational drive output to an eccentric shaft. The rotational position of the eccentric shaft is shifted relative to the rotational position of the engine crankshaft by way of the planetary gear set. This shifting varies the compression ratio of the internal combustion engine.
    Type: Application
    Filed: April 18, 2018
    Publication date: October 24, 2019
    Inventors: Andrew G. Balding, Brad J. Heckman, Rodney E. Baker
  • Publication number: 20170321622
    Abstract: Disclosed are integrated exhaust manifold (IEM) cylinder heads, methods for making and methods for using IEM cylinder heads, and motor vehicles with an engine and IEM cylinder head assembly. Disclosed, for example, is an IEM cylinder head for a motor vehicle with an engine and an exhaust system. The IEM cylinder head includes a body that mounts to the engine's cylinder block. The cylinder head body integrally defines: multiple chamber surfaces each aligning with a cylinder bore and piston to define a combustion chamber; multiple exhaust ports each communicating with a cylinder bore to evacuate exhaust gas therefrom; multiple exit ports communicating with the exhaust system to evacuate exhaust gas from the cylinder head; and multiple exhaust runners each extending from an exhaust port to one exit port. These exhaust runners are fluidly isolated from each other to each transmit exhaust gases from a single one of the cylinder bores.
    Type: Application
    Filed: May 5, 2016
    Publication date: November 9, 2017
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Alan W. Hayman, Rodney E. Baker
  • 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
  • Patent number: 9797512
    Abstract: An assembly such as a piston assembly for an engine includes a piston pin that has an outer member and a core. The outer member has a cavity extending lengthwise therethrough. The cavity has a first volume. The core is fit to the outer member in the cavity, and has a second volume less than the first volume. For example, the second volume may be less than the first volume because the core has an opening, because the core is shorter in length than the cavity, or both. A method of manufacturing a piston pin includes providing an outer member having a first density and a first length, creating a cavity that extends lengthwise through the outer member, providing a core having a second density and a second length, and inserting the core into the cavity of the outer member.
    Type: Grant
    Filed: October 27, 2015
    Date of Patent: October 24, 2017
    Assignee: GM Global Technology Operations LLC
    Inventors: Alan W. Hayman, Rodney E. Baker, Dale E. Murrish, Amit Kumar, Balakrishna Chinta
  • 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: 20170114898
    Abstract: An assembly such as a piston assembly for an engine includes a piston pin that has an outer member and a core. The outer member has a cavity extending lengthwise therethrough. The cavity has a first volume. The core is fit to the outer member in the cavity, and has a second volume less than the first volume. For example, the second volume may be less than the first volume because the core has an opening, because the core is shorter in length than the cavity, or both. A method of manufacturing a piston pin includes providing an outer member having a first density and a first length, creating a cavity that extends lengthwise through the outer member, providing a core having a second density and a second length, and inserting the core into the cavity of the outer member.
    Type: Application
    Filed: October 27, 2015
    Publication date: April 27, 2017
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Alan W. Hayman, Rodney E. Baker, Dale E. Murrish, Amit Kumar, Balakrishna Chinta
  • Patent number: 9359976
    Abstract: An engine assembly includes an intake assembly, a spark-ignited internal combustion engine, and an exhaust assembly. The intake assembly includes a charge air cooler disposed between an exhaust gas recirculation (EGR) mixer and a backpressure valve. The charge air cooler has both an inlet and an outlet, and the back pressure valve is configured to maintain a minimum pressure difference between the inlet of the charge air cooler and an outlet of the backpressure valve. A dedicated exhaust gas recirculation system is provided in fluid communication with at least one cylinder and with the EGR mixer. The dedicated exhaust gas recirculation system is configured to route all of the exhaust gas from the at least one cylinder to the EGR mixer for recirculation back to the engine.
    Type: Grant
    Filed: April 24, 2013
    Date of Patent: June 7, 2016
    Assignee: GM Global Technology Operations LLC
    Inventors: Edward J. Keating, Rodney E. Baker
  • Patent number: 8935917
    Abstract: A partially integrated manifold assembly is disclosed which improves performance, reduces cost and provides efficient packaging of engine components. The partially integrated manifold assembly includes a first leg extending from a first port and terminating at a mounting flange for an exhaust gas control valve. Multiple additional legs (depending on the total number of cylinders) are integrally formed with the cylinder head assembly and extend from the ports of the associated cylinder and terminate at an exit port flange. These additional legs are longer than the first leg such that the exit port flange is spaced apart from the mounting flange. This configuration provides increased packaging space adjacent the first leg for any valving that may be required to control the direction and destination of exhaust flow in recirculation to an EGR valve or downstream to a catalytic converter.
    Type: Grant
    Filed: January 28, 2013
    Date of Patent: January 20, 2015
    Assignee: GM Global Technology Operations LLC
    Inventors: Alan W. Hayman, Rodney E. Baker
  • Patent number: 8915081
    Abstract: An internal combustion engine comprises a compressor disposed in an intake system configured to compress combustion air and deliver it to cylinders of the engine. A compressor inlet assembly has a combustion air inlet, in fluid communication with, and configured to receive combustion air from the intake system. A combustion air passage extends through the assembly to an outlet located downstream of the inlet and is configured for fluid communication with the compressor. An EGR mixing conduit is disposed within the compressor inlet assembly and has an EGR inlet configured for fluid communication with, and receipt of EGR from, an EGR supply conduit. An EGR passage extends from the EGR inlet to an EGR supply annulus disposed about the combustion air inlet opening and a plurality of EGR ports extend between the EGR supply annulus and the combustion air passage for delivery of EGR thereto.
    Type: Grant
    Filed: January 31, 2012
    Date of Patent: December 23, 2014
    Assignee: GM Global Technology Operations LLC
    Inventors: Alan W. Hayman, Rodney E. Baker
  • Patent number: 8887680
    Abstract: An engine assembly includes an engine block having a first bank defining a first cylinder bore and a second bank defining a second cylinder bore. A first cylinder head is coupled to the first bank and defines first and second ports in communication with the first cylinder bore. A second cylinder head is coupled to the second bank and defines a third port in communication with the second cylinder bore. A first valve is located in the first port and engaged with a first valve lift mechanism, a second valve is located in the second port and engaged with a second valve lift mechanism, and a third valve is located in the third port and engaged with a third valve lift mechanism. A first camshaft is engaged with the first and third valve lift mechanisms and a second camshaft is engaged with the second valve lift mechanism.
    Type: Grant
    Filed: January 24, 2011
    Date of Patent: November 18, 2014
    Assignee: GM Global Technology Operations LLC
    Inventors: Alan W. Hayman, Rodney E. Baker
  • Publication number: 20140318121
    Abstract: An engine assembly includes an intake assembly, a spark-ignited internal combustion engine, and an exhaust assembly. The intake assembly includes a charge air cooler disposed between an exhaust gas recirculation (EGR) mixer and a backpressure valve. The charge air cooler has both an inlet and an outlet, and the back pressure valve is configured to maintain a minimum pressure difference between the inlet of the charge air cooler and an outlet of the backpressure valve. A dedicated exhaust gas recirculation system is provided in fluid communication with at least one cylinder and with the EGR mixer. The dedicated exhaust gas recirculation system is configured to route all of the exhaust gas from the at least one cylinder to the EGR mixer for recirculation back to the engine.
    Type: Application
    Filed: April 24, 2013
    Publication date: October 30, 2014
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Edward J. Keating, Rodney E. Baker
  • Publication number: 20140208727
    Abstract: A partially integrated manifold assembly is disclosed which improves performance, reduces cost and provides efficient packaging of engine components. The partially integrated manifold assembly includes a first leg extending from a first port and terminating at a mounting flange for an exhaust gas control valve. Multiple additional legs (depending on the total number of cylinders) are integrally formed with the cylinder head assembly and extend from the ports of the associated cylinder and terminate at an exit port flange. These additional legs are longer than the first leg such that the exit port flange is spaced apart from the mounting flange. This configuration provides increased packaging space adjacent the first leg for any valving that may be required to control the direction and destination of exhaust flow in recirculation to an EGR valve or downstream to a catalytic converter.
    Type: Application
    Filed: January 28, 2013
    Publication date: July 31, 2014
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Alan W. HAYMAN, Rodney E. BAKER
  • Patent number: 8539768
    Abstract: A turbocharger assembly for an internal combustion engine includes a bypass valve for controlling a flow of exhaust gas from a second group of exhaust ports of a cylinder head assembly. When disposed in an open position, the bypass valve allows exhaust gas from the second group of exhaust ports to combine with exhaust gas from a first group of exhaust ports to spin a turbine of the turbocharger assembly. When disposed in a closed position, the bypass valve forces the exhaust gas from the second group of exhaust ports through an Exhaust Gas Recirculation (EGR) passage to an intake manifold to establish a dedicated EGR system.
    Type: Grant
    Filed: May 10, 2011
    Date of Patent: September 24, 2013
    Assignee: GM Global Technology Operations LLC
    Inventors: Alan W. Hayman, Rodney E. Baker
  • Patent number: 8534251
    Abstract: An engine assembly may include an engine structure, a first camshaft housing assembly and a first camshaft assembly. The first camshaft housing assembly may be supported by the engine structure and have a first portion providing a first plurality of bearing support surfaces on a first side and a second portion coupled to the first portion and providing a second plurality of bearing support surfaces on a second side opposite the first side. The first camshaft assembly may be rotationally supported by the first camshaft housing assembly and arranged between the first portion and second portion.
    Type: Grant
    Filed: October 4, 2010
    Date of Patent: September 17, 2013
    Inventors: Rodney E. Baker, Brian W. Geiser, Cynthia Ann Stuvel, Gary L. Nye
  • Patent number: 8528327
    Abstract: In one exemplary embodiment of an exhaust system, the system includes an exhaust manifold in fluid communication with an internal combustion engine and a forced induction device in fluid communication with the exhaust manifold, the forced induction device including a housing. The system further includes a flow control device to control fluid communication between the forced induction device and a catalyst substrate and to control fluid communication between the exhaust manifold and the catalyst substrate.
    Type: Grant
    Filed: May 18, 2011
    Date of Patent: September 10, 2013
    Assignee: GM Global Technology Operations LLC
    Inventors: John R. Bucknell, Dominique T. Lester, Rodney E. Baker
  • Patent number: 8443603
    Abstract: An intake manifold assembly for an internal combustion engine of a vehicle includes a plenum, a plurality of lower runners coupled to and in fluid communication with the plenum, and a plurality of upper runners. Each of the upper runners is coupled to and in fluid communication with one of the lower runners. The plurality of upper runners includes a single dedicated upper EGR runner configured for supplying combustion air to at least two dedicated EGR cylinders. A primary throttle body is coupled to the plenum and configured for regulating a flow rate of compressed combustion air through the plenum. An EGR throttle body is coupled to the dedicated upper EGR runner and configured for regulating a flow rate of the compressed combustion air through the dedicated upper EGR runner to control the flow rate of the compressed combustion air to the dedicated EGR cylinders.
    Type: Grant
    Filed: May 10, 2011
    Date of Patent: May 21, 2013
    Assignee: GM Global Technology Operations LLC
    Inventors: Alan W. Hayman, Rodney E. Baker
  • Patent number: 8418666
    Abstract: A camshaft assembly may include a monolithic camshaft body, a journal member and a thrust ring. The monolithic camshaft body may define lobes and journal regions along an axial extent thereof. The journal member may be separate from and fixed to an axial end of the camshaft body adjacent an end lobe of the camshaft body. The thrust ring may be axially secured to the camshaft assembly at the axial end of the camshaft body.
    Type: Grant
    Filed: January 14, 2010
    Date of Patent: April 16, 2013
    Inventors: Dominique T. Lester, Rodney E. Baker, Alan W. Hayman
  • Patent number: 8397689
    Abstract: A cylinder head including a dam defining a reservoir surrounding the periphery of the fuel pump tappet/roller follower mounting hole is provided. The cylinder head includes a tappet/roller follower mounted in the tappet/roller follower mounting hole and in communication with a cam and a fuel pump. The fuel pump is located on the high side of the head and oil drainage occurs in a direction away from the mounting hole. The dam and reservoir are configured to retain lubricant in the mounting hole and the sliding interface between the mounting hole and the tappet/roller follower. The dam and reservoir are configured to retain a minimum level of oil in the mounting hole when the head is in vehicle position. A method is provided for retaining lubrication in the tappet/roller follower hole by forming a dam defining a reservoir in the head and passively providing lubricant to the tappet/roller follower hole.
    Type: Grant
    Filed: July 22, 2010
    Date of Patent: March 19, 2013
    Assignee: GM Global Technology Operations LLC
    Inventors: Rodney E. Baker, James B. Hicks, Brian W. Geiser