Patents by Inventor Chad H. Stovell

Chad H. Stovell 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).

  • Combustion chamber for fuel injected engines
    Patent number: 8776760
    Abstract: Passageways are provided within the combustion chamber of a fuel injected internal combustion engine to convey injected fuel to desired positions within the combustion chamber. The fuel-conveying passageways may be either open-sided or closed, and are positioned within the combustion chamber in substantial alignment with a respective spray jet of fuel, enabling optimum distribution of the fuel through the combustion chamber for enhanced mixing with air prior to combustion.
    Type: Grant
    Filed: October 13, 2009
    Date of Patent: July 15, 2014
    Assignee: Southwest Research Institute
    Inventor: Chad H. Stovell
  • Piston bowl with flat bottom
    Patent number: 8677974
    Abstract: A piston for a direct injection engine is provided, the piston having a bowl at an upper end, the bowl forming a portion of a combustion chamber. The bowl includes an inner surface that defines a volume configured to receive a fuel-air mixture, the inner surface of the bowl including a generally concave portion including a flat bottom surrounding a central protruding dome. The relatively flat bottom portion is bounded by two radial concave surface portions which are disposed below two convex separation features for the injected fuel spray. Such surface geometries may reduce soot and improve fuel-air mixing.
    Type: Grant
    Filed: May 4, 2010
    Date of Patent: March 25, 2014
    Assignee: Southwest Research Institute
    Inventors: Rainer J. Rothbauer, Charles E. Roberts, Jr., Chad H. Stovell
  • Piston Bowl With Flat Bottom
    Publication number: 20110271931
    Abstract: A piston for a direct injection engine is provided, the piston having a bowl at an upper end, the bowl forming a portion of a combustion chamber. The bowl includes an inner surface that defines a volume configured to receive a fuel-air mixture, the inner surface of the bowl including a generally concave portion including a flat bottom surrounding a central protruding dome. The relatively flat bottom portion is bounded by two radial concave surface portions which are disposed below two convex separation features for the injected fuel spray. Such surface geometries may reduce soot and improve fuel-air mixing.
    Type: Application
    Filed: May 4, 2010
    Publication date: November 10, 2011
    Applicant: Southwest Research Institute
    Inventors: Rainer J. ROTHBAUER, Charles E. ROBERTS, JR., Chad H. STOVELL
  • Combustion Chamber for Fuel Injected Engines
    Publication number: 20110083638
    Abstract: Passageways are provided within the combustion chamber of a fuel injected internal combustion engine to convey injected fuel to desired positions within the combustion chamber. The fuel-conveying passageways may be either open-sided or closed, and are positioned within the combustion chamber in substantial alignment with a respective spray jet of fuel, enabling optimum distribution of the fuel through the combustion chamber for enhanced mixing with air prior to combustion.
    Type: Application
    Filed: October 13, 2009
    Publication date: April 14, 2011
    Inventor: Chad H. Stovell