Difference between revisions of "Free piston engine"
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| − | The free-piston engine was | + | The free-piston engine was proposed by [[Raúl Pateras Pescara|R.P. Pescara]] <ref>Pescara R.P., Motor compressor apparatus, ''US Patent 1,657,641, 1928''.</ref> 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. <ref>Toutant W.T., The Worthington–Junkers free-piston air compressor, ''Journal of the American Society of Naval Engineers 1952:64:583–594''.</ref>. | Free-piston air compressors were used, among others by, the German Navy. They were efficienct, compact and quiet. <ref>Toutant W.T., The Worthington–Junkers free-piston air compressor, ''Journal of the American Society of Naval Engineers 1952:64:583–594''.</ref>. | ||
| + | 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. <ref>Clark N. et al., Modelling and development of a linear engine, ''Proc. ASME Spring Conference, Internal Combustion Engine Division, 1998:30:49–57''.</ref><ref>Tikkanen S. et al., First cycles of the dual hydraulic free piston engine, ''SAE Paper 2000–01–2546, 2000''.</ref>. | ||
| − | Several | + | Several free-piston gas generators were created, and these were in widely used in large-scale applications such as stationary and marine powerplants <ref>London A.L., Oppenheim A.K., The free-piston engine development -- Present status and design aspects, ''Transactions of the ASME 1952:74:1349–1361''.</ref>. |
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| + | == References == | ||
| + | {{Reflist}} | ||
Revision as of 00:29, December 17, 2009
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].
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.
