Internal-combustion engines – Combined devices – Generating plants
Patent
1975-03-03
1976-11-02
Croyle, Carlton R.
Internal-combustion engines
Combined devices
Generating plants
123 805, 418 36, F02B 5300
Patent
active
039890120
ABSTRACT:
This is a continuation-in-part to a previous patent application now pending entitled Two-Rotor Engine, Ser. No. 542,250. In accord with said patent pending, the present invention also involves an engine comprising a cavity of genus 1 generated by the revolution of a rectangle about an axis. Two sets of diaphragms with n diaphragms in each set are alternated inside the cavity of revolution, separating the cavity in 2n chambers, the volume of n chambers increasing while the volume of the other n chambers is decreasing when the two sets of diaphragms are forced to rotate with respect to each other. In the present invention, one set of diaphragms is attached to a center rotor, the other set being attached to a side rotor. While in the Two-Rotor Engine, the two sets of diaphragms are attached to the two side rotors which, in turn, are connected to the two side gears of a differential assembly. The changing of volume of chambers is used to execute complex thermodynamic cycles. A novel concept is disclosed where fixed volume heat-exchanging pressure chambers are used to contain gas, the pressure of which is increased by the heat of the engine. This pressure is later communicated to the variable volume chambers to be converted to useful torque. The novel methods and means are illustrated in terms of an example pertaining to an overall efficient vehicle engine. A cycle consisting of four modified Otto sub-cycles recovers heat by afterburning of exhaust gases and by processing cool air in dummy Otto sub-cycles in conjunction with the aforesaid pressure chambers. Extra torque can be provided during emergencies by feeding fuel to such dummy Otto sub-cycles normally processing only hot air. The overall efficiency of a car engine can be further enhanced by use of dynamic braking. Several advantages of the Three-Rotor Engine over the Two-Rotor Engine are presented. The present invention can be applied in the design of steam engines, hydrostatic engines, gasoline engines, Diesel engines, fluid measuring devices, and pumps.
REFERENCES:
patent: 987929 (1911-03-01), Thomas
patent: 1568051 (1926-01-01), Bullington
patent: 1695704 (1928-12-01), Archer
patent: 1882971 (1932-10-01), Sohimanek
patent: 2687609 (1954-08-01), Mallinckrodt
Casey William J.
Croyle Carlton R.
Doundoulakis Helias
Koczo, Jr. Michael
Michalos Constantine
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