Patents by Inventor Jeffrey Lyal Powell

Jeffrey Lyal Powell 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).

  • Fuel nozzle assembly for high fuel/air ratio and reduced combustion dynamics
    Patent number: 11561008
    Abstract: Fuel nozzle assemblies are provided. For example, a fuel nozzle assembly for a combustor system comprises a fuel nozzle having a pilot swirler and an outlet defined in an outlet end, as well as a main mixer attached to the outlet end and extending about the outlet. A total combustor airflow through the combustor system comprises a pilot swirler airflow that is greater than about 14% and a main mixer airflow that is less than about 50% of the total combustor airflow. In further embodiments, the fuel nozzle also comprises main and pilot fuel injectors that each are configured to receive a portion of a fuel flow to the fuel nozzle. The fuel nozzle provides less than about 80% of the fuel flow to the main fuel injector at a high power operating condition of a gas turbine engine in which the fuel nozzle assembly is installed.
    Type: Grant
    Filed: August 23, 2017
    Date of Patent: January 24, 2023
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Eric John Stevens, Mark David Durbin, Randall Charles Boehm, Michael Anthony Benjamin, Beverly Stephenson Duncan, Jeffrey Lyal Powell
  • FUEL NOZZLE ASSEMBLY FOR HIGH FUEL/AIR RATIO AND REDUCED COMBUSTION DYNAMICS
    Publication number: 20190063753
    Abstract: Fuel nozzle assemblies are provided. For example, a fuel nozzle assembly for a combustor system comprises a fuel nozzle having a pilot swirler and an outlet defined in an outlet end, as well as a main mixer attached to the outlet end and extending about the outlet. A total combustor airflow through the combustor system comprises a pilot swirler airflow that is greater than about 14% and a main mixer airflow that is less than about 50% of the total combustor airflow. In further embodiments, the fuel nozzle also comprises main and pilot fuel injectors that each are configured to receive a portion of a fuel flow to the fuel nozzle. The fuel nozzle provides less than about 80% of the fuel flow to the main fuel injector at a high power operating condition of a gas turbine engine in which the fuel nozzle assembly is installed.
    Type: Application
    Filed: August 23, 2017
    Publication date: February 28, 2019
    Inventors: Eric John Stevens, Mark David Durbin, Randall Charles Boehm, Michael Anthony Benjamin, Beverly Stephenson Duncan, Jeffrey Lyal Powell