Reciprocating engine
OwnerPeter F Huftoninventor
Life of this patent
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Abstract
A reciprocating engine (10) comprises separate cylinders (12 and 15) for air compression and expansion with heating of the compressed air taking place in a heat exchanger (17) or combustor (64) located between the cylinders (12 and 15). The flow of gas into the expander cylinder (15) is controlled by an admission valve (37). The stem (41) of the admission valve (37) extends transversely across the expander cylinder (15) and is cooled by the flow of exhaust gases out of the expander cylinder (15).
Claims13
A reciprocating engine comprising a compressor section which includes a cylinder in which a piston reciprocates and which receives air for compression by the reciprocating piston, a heating section which receives air from the compressor section and an expander section including a further cylinder in which a further piston reciprocates and which receives the heated air from the heating section of the engine, valves being provided to control the flow of air and exhaust gases into the respective sections of the engine, the valve which permits the flow of exhaust gases out from the expander section being located at the top end of the expander cylinder, the valve which permits the flow of gases into the expander section being operated by control means, the control means extend through the expander cylinder transverse to the axis of the expander cylinder and to the flow of exhaust gases so that in operation the control means are cooled by the exhaust gases passing out of the expander section.
Dependencies are inferred from the claim text.