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:
Jan. 09, 2001
Filed:
Jun. 26, 1998
Applicant:
Inventors:
Charles W. Haldeman, Concord, MA (US);
Brian S. Ahern, Boxboro, MA (US);
Assignee:
Quantum Energy Technologies, Cambridge, MA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F02B 4/702 ; F02B 7/711 ;
U.S. Cl.
CPC ...
F02B 4/702 ; F02B 7/711 ;
Abstract
Highly efficient engine. The system includes an internal combustion engine having at least one piston in a cylinder, the cylinder including a cylinder head. The engine operates on an unsymmetrical expansion and compression cycle wherein the expansion portion of the cycle is greater than the compression portion of the cycle. The piston and cylinder head are lined with an insulating material having a selected thermal diffusivity. Apparatus is provided for injecting a supercritical mixture of fuel and water into the cylinder of the engine. The combination of these aspects results in a highly efficient engine.