Heat engine
US4621497A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 15, 1985 |
| Grant date | Nov 11, 1986 |
| Priority date | — |
| Expiry date | May 15, 2005 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02B3/06
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A heat engine including a closed case having a cylindrical chamber with circumferential heat transfer surfaces in the form of radially projecting ribs. A displacer having complementary ribs around the outer surface is rotatably mounted within the chamber. Some of the displacer ribs are removed leaving a working space containing working fluid. A cylinder in the displacer opens into the working space and a piston reciprocates within the cylinder as the displacer rotates so as to alter the volume of the working space. Different parts of the circumference of the case are maintained at different temperatures during operation so that the working fluid is subjected to changes of temperature and pressure during operation. Apart from the basic sinusoidal movement of the piston a superimposing lower amplitude oscillation may be applied to provide control of the thermodynamic operating cycle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.