Power plants – Motor operated by expansion and/or contraction of a unit of... – Unit of mass is a gas which is heated or cooled in one of a...
Patent
1979-10-18
1982-05-04
Ostrager, Allen M.
Power plants
Motor operated by expansion and/or contraction of a unit of...
Unit of mass is a gas which is heated or cooled in one of a...
60521, F02G 104
Patent
active
043275508
ABSTRACT:
A hot-gas engine the power output of which is regulatable comprises a cylinder defining variable-volume primary and secondary chambers separated by a piston moving in the cylinder, the movement of which piston is transmitted to an external system extracting the mechanical work produced by the engine. The engine has a heater communicating with the primary chamber, a regenerator communicating with the heater and a cooler containing a supply of working gas at the maximum gas pressure occurring during the work cycle. The engine is provided with valves controlled to pass the working gas to, from and between the primary and secondary chambers in sequential steps. The regulation of the output is accompolished in that during a work-cycle period of increasing primary chamber volume the pressure in the primary chamber is maintained at a high and constant level during a variable fraction of this period, which fraction extends over the work-cycle interval in which a reduction of the power output is obtained for increasing injection time at high and constant pressure. Simultaneously with a reduction of the power output, there is a reduction of the ratio of the maximum and minimum pressures over the work cycle.
REFERENCES:
patent: 2067453 (1937-01-01), Lee
patent: 3698182 (1972-10-01), Knoos
patent: 3889465 (1975-06-01), Gartner
AGA Aktiebolag
Husar Stephen F.
Ostrager Allen M.
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