Patents by Inventor David Darin Wickman

David Darin Wickman 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).

  • Wet biofuel compression ignition
    Patent number: 11608799
    Abstract: A compression ignition engine system allows use of hydrous fuels, in particular hydrous biofuels, with high water content (e.g., 20-85% water). The hydrous fuel is pressurized, and also preferably heated via the engine's exhaust gas, to increase its enthalpy, and is then directly injected into the engine cylinder(s) near top dead center. The system provides brake thermal efficiency increases of 20% or more versus a comparable system using conventional diesel fuel, while allowing the use of inexpensive undistilled or lightly distilled biofuels.
    Type: Grant
    Filed: January 6, 2022
    Date of Patent: March 21, 2023
    Assignee: Wisconsin Alumni Research Foundation
    Inventors: David Darin Wickman, Sage Lucas Kokjohn
  • WET BIOFUEL COMPRESSION IGNITION
    Publication number: 20220213849
    Abstract: A compression ignition engine system allows use of hydrous fuels, in particular hydrous biofuels, with high water content (e.g., 20-85% water). The hydrous fuel is pressurized, and also preferably heated via the engine's exhaust gas, to increase its enthalpy, and is then directly injected into the engine cylinder(s) near top dead center. The system provides brake thermal efficiency increases of 20% or more versus a comparable system using conventional diesel fuel, while allowing the use of inexpensive undistilled or lightly distilled biofuels.
    Type: Application
    Filed: January 6, 2022
    Publication date: July 7, 2022
    Inventors: David Darin Wickman, Sage Lucas Kokjohn