Patents by Inventor Jacob R. Zuehl

Jacob R. Zuehl 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).

  • Engine fuel control for internal combustion engine having dedicated EGR
    Patent number: 9650976
    Abstract: A method of controlling the amount of fuel delivered to an engine having at least one dedicated EGR cylinder. The method is typically performed on an engine cycle-by-cycle basis. A fueling control unit receives, from the engine's main control unit, fueling requirement data representing a current fueling requirement suitable for the main cylinders. The fueling control unit then calculates a current amount of fuel to be delivered to the dedicated EGR cylinder as a function of the number of dedicated EGR cylinders, the number of main cylinders, the current equivalence ratio for the dedicated EGR cylinder, and the fueling requirement data. With the amounts of fuel for both the dedicated EGR cylinder and the main cylinders now having been determined, the fueling control unit generates appropriate control signals to the cylinder fuel delivery mechanisms.
    Type: Grant
    Filed: February 5, 2014
    Date of Patent: May 16, 2017
    Assignee: SOUTHWEST RESEARCH INSTITUTE
    Inventors: Jess W. Gingrich, Raphael Gukelberger, Jacob R. Zuehl
  • Engine Fuel Control For Internal Combustion Engine Having Dedicated EGR
    Publication number: 20150219028
    Abstract: A method of controlling the amount of fuel delivered to an engine having at least one dedicated EGR cylinder. The method is typically performed on an engine cycle-by-cycle basis. A fueling control unit receives, from the engine's main control unit, fueling requirement data representing a current fueling requirement suitable for the main cylinders. The fueling control unit then calculates a current amount of fuel to be delivered to the dedicated EGR cylinder as a function of the number of dedicated EGR cylinders, the number of main cylinders, the current equivalence ratio for the dedicated EGR cylinder, and the fueling requirement data. With the amounts of fuel for both the dedicated EGR cylinder and the main cylinders now having been determined, the fueling control unit generates appropriate control signals to the cylinder fuel delivery mechanisms.
    Type: Application
    Filed: February 5, 2014
    Publication date: August 6, 2015
    Inventors: Jess W. Gingrich, Raphael Gukelberger, Jacob R. Zuehl