Difference between revisions of "Free piston engine"
From Conservapedia
(adding reference link) |
|||
| Line 10: | Line 10: | ||
== References == | == References == | ||
{{Reflist}} | {{Reflist}} | ||
| + | |||
| + | |||
| + | ==External LInks== | ||
| + | *http://nextbigfuture.com/2008/09/free-piston-engine-could-be-twice-as.html | ||
Revision as of 03:25, January 31, 2010
The free-piston engine was proposed by R.P. Pescara [1] and the original application was a single piston air compressor.
Free-piston air compressors were used, among others by, the German Navy. They were efficienct, compact and quiet. [2].
These are of the dual piston type, creating a compact unit with a high/weight ratio. This design requires an electric machine of for low weight. Difficulties in the form of low cycle-to-cycle rates have been reported for dual piston engines. [3][4].
Several free-piston gas generators were created, and these were in widely used in large-scale applications such as stationary and marine powerplants. [5]. Current research suggests these could be more efficient than internal combustion engines [6].
References
- ↑ Pescara R.P., Motor compressor apparatus, US Patent 1,657,641, 1928.
- ↑ Toutant W.T., The Worthington–Junkers free-piston air compressor, Journal of the American Society of Naval Engineers 1952:64:583–594.
- ↑ Clark N. et al., Modelling and development of a linear engine, Proc. ASME Spring Conference, Internal Combustion Engine Division, 1998:30:49–57.
- ↑ Tikkanen S. et al., First cycles of the dual hydraulic free piston engine, SAE Paper 2000–01–2546, 2000.
- ↑ London A.L., Oppenheim A.K., The free-piston engine development -- Present status and design aspects, Transactions of the ASME 1952:74:1349–1361.
- ↑ www.nextbigfuture.com
