Rotary engine
US7434563B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 6, 2005 |
| Grant date | Oct 14, 2008 |
| Priority date | — |
| Expiry date | Sep 6, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The rotary engine includes a cylinder body having a cylinder chamber, an intake port, an exhaust port, and a spark plug, and a rotor which is received in the cylinder chamber to eccentrically rotate while coming into contact at seal faces thereof with an inner circumferential contact wall of the cylinder chamber to thereby implement intake, compression, expansion, and exhaust strokes. The rotor has an elliptical outer contour, and the inner circumferential contact wall of the cylinder chamber coincides with a specific curve, which is described by opposite apexes of the elliptical rotor in a direction of a major axis, when the rotor eccentrically rotates. The intake port and exhaust port are provided with opening/closing valves, respectively. Sealing performance between the cylinder chamber and the rotor may achieve an enhancement in the efficiency of fuel combustion and engine output and prevent waste of fuel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.