Free piston engine
US6931845B2 · kind B2 · utility
23Cited by
2References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 15, 2001 |
| Grant date | Aug 23, 2005 |
| Priority date | — |
| Expiry date | Jun 24, 2021 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02B71/045
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A free-piston engine has a stepped piston having a larger end face thereof guided in the compression cylinder, and a smaller end face in the work cylinder. Both the work cylinder and the compression cylinder are connected with a common high-pressure accumulator for initiating the compression stroke or for charging during the expansion stroke.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.