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
1978-07-28
1980-04-01
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...
F02G 104
Patent
active
041954823
ABSTRACT:
A Stirling Cycle machine having a cylinder mounted in a housing has a displacer reciprocably mounted in the cylinder. Also reciprocably mounted in the cylinder is a piston and passages are provided in the cylinder so that when the displacer moves in one direction, a cooled gas will be drawn into the cylinder between the displacer and the piston, and when the displacer moves in the opposite direction, a heated gas will be drawn into the cylinder to thus provide expansive gas forces working against the piston thus causing the piston to be driven in its power stroke when the machine is utilized as an engine. The piston is drivingly connected to a crankshaft and the displacer is driven by a crankshaft, which is in rotative synchronism such that the displacer movement in the cylinder in the direction to draw heated air into the cylinder overlaps in time a substantial portion of the piston power stroke. The lengths of the connecting rods between each of the displacer and piston and their respective crank shafts are so proportioned to the respective crank throws that the displacer is so driven in its reciprocable cycle that it is provided with a long dwell within a given range of displacer movement near the end of displacer travel in the one direction which moves cold air into the cylinder and a relatively short dwell in the other direction which moves hot air into the cylinder. The piston dwell in a predetermined range of piston movement near the beginning of the power stroke is less than the piston dwell during the same predetermined range of piston movement near the end of the power stroke. Thus, a more efficient Stirling Cycle engine is provided.
REFERENCES:
patent: 4010611 (1977-03-01), Zachery
Jeffers Albert L.
Ostrager Allen M.
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