title: Enhanced efficiency of internal combustion engines by employing spinning gas.
abstract: The efficiency of the internal combustion engine might be enhanced by employing spinning gas. A gas spinning at near sonic velocities has an effectively higher heat capacity, which allows practical fuel cycles, which are far from the Carnot efficiency, to approach more closely the Carnot efficiency. A remarkable gain in fuel efficiency is shown to be theoretically possible for the Otto and Diesel cycles. The use of a flywheel, in principle, could produce even greater increases in efficiency.
authors.affiliation: Department of Astrophysical Sciences, Princeton University, Princeton, New Jersey 08544, USA.
authors.forename: V I
authors.initials: VI
authors.lastname: Geyko
authors.affiliation: Department of Astrophysical Sciences, Princeton University, Princeton, New Jersey 08544, USA.
authors.forename: N J
authors.initials: NJ
authors.lastname: Fisch
mesh_terms: D005740:Gases; D008962:Models, Theoretical; D009038:Motion; D013816:Thermodynamics; D014186:Transportation / Q000379:methods*
chemical_list: D005740:Gases