Leaky gas spring valve for preventing piston overstroke in a free piston stirling engine
US4945726A · kind A · utility
18Cited by
2References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 23, 1989 |
| Grant date | Aug 7, 1990 |
| Priority date | — |
| Expiry date | Aug 23, 2009 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02G2275/20
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The invention is for the prevention of power piston overstroke in a Stirling cycle machine, wherein there is a gas valve which vents the gas spring acting upon the displacer. The valve and its accompanying control system switch on a leak in the gas spring to vent the gas spring upon piston stroke beyond a selected magnitude. This reduces the spring constant which reduces the displacer amplitude and phase lead over the power piston and thereby reduces power output.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.