Patents by Inventor James Henry Yager

James Henry Yager 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: 9695723
    Abstract: Various methods and systems are provided for a combustion system of an engine. In one example, a combustion system comprises a piston crown bowl with a central apex, a combustion chamber operable at a compression ratio in a range of from about 13:1 to about 17:1, the combustion chamber formed at least partially by the piston crown bowl, and a fuel injector with a nozzle extending into a central portion of the combustion chamber that is operable to inject fuel directly into the combustion chamber, the nozzle defining a number of apertures that is in a range of from six to ten.
    Type: Grant
    Filed: January 15, 2014
    Date of Patent: July 4, 2017
    Assignee: General Electric Company
    Inventors: Barry Record, Roy James Primus, Venu Gummadavelli, James Henry Yager, Omowoleola Chukwuemeka Akinyemi, Adam Edgar Klingbeil, Thomas Michael Lavertu
  • Publication number: 20160160811
    Abstract: Systems and methods are provided for controlling exhaust gas recirculation (EGR). In one example, an engine system includes a first EGR valve coupling an exhaust manifold to an engine exhaust system, a second EGR valve coupling the exhaust manifold to an engine intake system, and a control unit. The control unit selectively adjusts a position of the first EGR valve based on a target amount, and adjusts a position of the second EGR valve based on the target amount and a position of the first EGR valve. Responsive to a first degradation condition of the first EGR valve, the control unit adjusts the position of the second EGR valve based on the target amount and based on a pressure of the first exhaust manifold, and responsive to a second degradation condition of the first EGR valve, adjusts the position of the second EGR valve based on the target amount.
    Type: Application
    Filed: February 17, 2016
    Publication date: June 9, 2016
    Applicant: General Electric Company
    Inventors: Dipankar Deb, Manthram Sivasubramaniam, Prashant Srinivasan, Sharath Sridhar Aramanekoppa, Prem Kumar Patchaikani, Sachin Shivajirao Kulkarni, Sebastian Walter Freund, Jassin Marcel Fritz, Georgios Bikas, James Henry Yager, Shashi Kiran
  • Publication number: 20150198070
    Abstract: Various methods and systems are provided for a combustion system of an engine. In one example, a combustion system comprises a piston crown bowl with a central apex, a combustion chamber operable at a compression ratio in a range of from about 13:1 to about 17:1, the combustion chamber formed at least partially by the piston crown bowl, and a fuel injector with a nozzle extending into a central portion of the combustion chamber that is operable to inject fuel directly into the combustion chamber, the nozzle defining a number of apertures that is in a range of from six to ten.
    Type: Application
    Filed: January 15, 2014
    Publication date: July 16, 2015
    Applicant: General Electric Company
    Inventors: Barry Record, Roy James Primus, Venu Gummadavelli, James Henry Yager, Omowoleola Chukwuemeka Akinyemi, Adam Edgar Klingbeil, Thomas Michael Lavertu
  • Publication number: 20140358404
    Abstract: A method of operating an internal combustion engine is provided. The method includes combusting a mixture of fresh air and fuel within multiple cylinders. The method also includes directing a first portion of exhaust gases into a first-stage turbine and a second-stage turbine of a turbocharger for expanding the exhaust gases, directing a second portion of exhaust gases from the exhaust manifold via an exhaust channel bypassing the first-stage turbine and recirculating a third portion of exhaust gases into an intake manifold after mixing with fresh air. The method includes controlling at least one of: reducing a normal engine speed at each engine power setting while maintaining constant engine power level by increasing a fuel injection per cycle; concurrently increasing a flow rate of the third portion of exhaust gas during recirculation; and advancing a fuel injection timing for reducing emission levels that meets Tier 4 requirements.
    Type: Application
    Filed: May 30, 2013
    Publication date: December 4, 2014
    Inventors: Thomas Michael Lavertu, Adam Edgar Klingbeil, Roy James Primus, Omowoleola Chukwuemeka Akinyemi, Venu Gopal Gummadavelli, Barry Allen Record, James Henry Yager
  • Patent number: 8763381
    Abstract: A method of heating an engine exhaust gas of an engine, including flowing a first exhaust gas at a first temperature within and along internal flow channels of a catalyst brick, and flowing a second exhaust gas at a second, different, temperature around an exterior of the catalyst brick. Heat may be transferred between the gases and the catalyst brick to achieve various operations.
    Type: Grant
    Filed: August 22, 2012
    Date of Patent: July 1, 2014
    Assignee: General Electric Company
    Inventor: James Henry Yager
  • Publication number: 20140014075
    Abstract: Various methods and systems are provided for an exhaust gas recirculation system. In one embodiment, an engine method comprises routing exhaust gas from a first cylinder group of an engine to an exhaust gas recirculation passage coupled to both an intake passage and an exhaust passage of the engine, the first cylinder group having a first amount of positive intake and exhaust valve overlap, and routing exhaust gas from a second cylinder group of the engine only to the exhaust passage of the engine, the second cylinder group having a second, smaller amount of positive intake and exhaust valve overlap.
    Type: Application
    Filed: July 13, 2012
    Publication date: January 16, 2014
    Inventor: James Henry Yager
  • Publication number: 20120312013
    Abstract: A method of heating an engine exhaust gas of an engine, including flowing a first exhaust gas at a first temperature within and along internal flow channels of a catalyst brick, and flowing a second exhaust gas at a second, different, temperature around an exterior of the catalyst brick. Heat may be transferred between the gases and the catalyst brick to achieve various operations.
    Type: Application
    Filed: August 22, 2012
    Publication date: December 13, 2012
    Applicant: GENERAL ELECTRIC COMPANY
    Inventor: James Henry Yager
  • Patent number: 8261542
    Abstract: A method of heating an engine exhaust gas of an engine, including flowing a first exhaust gas at a first temperature within and along internal flow channels of a catalyst brick, and flowing a second exhaust gas at a second, different, temperature around an exterior of the catalyst brick. Heat may be transferred between the gases and the catalyst brick to achieve various operations.
    Type: Grant
    Filed: September 3, 2008
    Date of Patent: September 11, 2012
    Assignee: General Electric Company
    Inventor: James Henry Yager
  • Publication number: 20120222659
    Abstract: Various methods and systems are provided for operating an exhaust gas recirculation engine having a plurality of exhaust gas donor cylinders and a plurality of non-donor cylinders. One example method includes firing each of the engine cylinders in a cylinder firing order, including firing at least one of the non-donor cylinders between every donor cylinder firing of the engine cycle.
    Type: Application
    Filed: March 3, 2011
    Publication date: September 6, 2012
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Sachin Shivajirao Kulkarni, Sebastian Walter Freund, Jassin Marcel Fritz, Georgios Bikas, James Henry Yager, Shashi Kiran
  • Patent number: 8141359
    Abstract: A method of operating an internal combustion engine having an intake, an exhaust, and a turbocharger including a turbine and a compressor, the compressor coupled to the intake and the turbine coupled to the exhaust, the engine further having an exhaust gas recirculation system coupled to the exhaust upstream of the turbine and coupled to the intake downstream of the compressor, the method including transferring heat via a heat exchanger from the exhaust gas recirculation system to downstream of the turbine.
    Type: Grant
    Filed: September 3, 2008
    Date of Patent: March 27, 2012
    Assignee: General Electric Company
    Inventor: James Henry Yager
  • Publication number: 20110041495
    Abstract: Exhaust gas recirculation systems and methods related to internal combustion engines are provided. In one embodiment, a system comprises an engine having at least a first cylinder group and a second cylinder group, with at least one cylinder in each cylinder group, an intake manifold having an inlet and a first outlet coupled to the first cylinder group and a second outlet coupled to the second cylinder group, an intake passage coupled to the intake manifold inlet, and first and second exhaust manifolds coupled to the first and second cylinder groups, respectively. An exhaust gas recirculation system is further coupled between the second exhaust manifold and the intake passage, and has a number of openings positioned within the intake passage, the number of openings equal to or greater than a number of cylinders having an intake event between successive exhaust events occurring in the second cylinder group.
    Type: Application
    Filed: August 24, 2009
    Publication date: February 24, 2011
    Applicant: General Electric Company
    Inventor: James Henry Yager
  • Publication number: 20100050631
    Abstract: A method of operating an internal combustion engine having an intake, an exhaust, and a turbocharger including a turbine and a compressor, the compressor coupled to the intake and the turbine coupled to the exhaust, the engine further having an exhaust gas recirculation system coupled to the exhaust upstream of the turbine and coupled to the intake downstream of the compressor, the method including transferring heat via a heat exchanger from the exhaust gas recirculation system to downstream of the turbine.
    Type: Application
    Filed: September 3, 2008
    Publication date: March 4, 2010
    Applicant: GENERAL ELECTRIC COMPANY
    Inventor: James Henry Yager
  • Publication number: 20100050634
    Abstract: A method of heating an engine exhaust gas of an engine, including flowing a first exhaust gas at a first temperature within and along internal flow channels of a catalyst brick, and flowing a second exhaust gas at a second, different, temperature around an exterior of the catalyst brick. Heat may be transferred between the gases and the catalyst brick to achieve various operations.
    Type: Application
    Filed: September 3, 2008
    Publication date: March 4, 2010
    Applicant: GENERAL ELECTRIC COMPANY
    Inventor: James Henry Yager