| 1. | In the 1950s the factory transitioned from piston engines to jet engines.
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| 2. | But soon the two piston engines start to pound and sing throatily.
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| 3. | Koenigsegg also is working on a camless piston engine for the Regera.
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| 4. | In piston engines, it acts to delay the onset of engine knocking.
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| 5. | The piston engine is fitted vertically in the fuselage behind the cabin.
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| 6. | Opposed piston engines have been manufactured using one, two and three crankshafts.
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| 7. | At the front of the fuselage was a Armstrong Siddeley Genet piston engine.
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| 8. | Huber continued to work on free-piston engines until at least 1967.
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| 9. | The purpose of all such piston engines is to generate power.
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| 10. | In 1936 the locomotive was refitted with a normal piston engine.
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