Stirling cycle rotary engine

Details Stirling cycle rotary engine Stirling cycle rotary engine

1987-10-20

1988-06-28

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...

60525, F02G 104

Patent

active

047530731

ABSTRACT:
An improved rotary engine (10) utilizing essentially the Stirling cycle is provided having at least three rotors (12, 34, 56) each separately rotatable within a toroidal housing cavity (15) and about a common axis. Each rotor has a pair of diametrically opposed rotor blocks, so that at least six cylindrical working chambers are formed sufficient to accomodate the Stirling cycle. Heat may be added to the closed circuit engine gas via a heat exchanger (74) thermally connected to any heat source external to the working chambers, such as a solar collector, thus rendering the high efficiency engine suitable for outer space applications. A cool compressed gas from one working chamber and a hot exhaust gas from another working chamber pass through respective thermally connected heat exchangers (72, 80) for conservation of energy and increased engine efficiency. Relative angular rotor movement and thus phased volume changes in the working chambers may be obtained by an arrangement of meshing elliptical gears connected to multiple coaxial rotor shafts (24, 28, 32) and an aligned common output shaft (36).

REFERENCES:
patent: 3460344 (1969-08-01), Johnson
patent: 4312181 (1982-01-01), Clark

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