The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 21, 2023
Filed:
Jan. 06, 2022
Applicant:
Wisconsin Alumni Research Foundation, Madison, WI (US);
Inventors:
David Darin Wickman, Madison, WI (US);
Sage Lucas Kokjohn, Oregon, WI (US);
Assignee:
Wisconsin Alumni Research Foundation, Madison, WI (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
F02M 25/022 (2006.01); F02M 25/03 (2006.01); F02M 25/038 (2006.01); F02M 21/02 (2006.01); F02B 7/02 (2006.01); F02M 21/06 (2006.01);
U.S. Cl.
CPC ...
F02M 21/0206 (2013.01); F02B 7/02 (2013.01); F02M 21/0245 (2013.01); F02M 21/06 (2013.01); F02M 25/022 (2013.01); F02M 25/03 (2013.01); F02M 25/038 (2013.01); F02B 2201/064 (2013.01);
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.