Power plants – Internal combustion type free piston device supplies motive...
Patent
1986-05-27
1987-06-16
Koczo, Michael
Power plants
Internal combustion type free piston device supplies motive...
418 92, 418 99, 418129, 384111, F02B 7104
Patent
active
046728139
ABSTRACT:
A slidable vane motor is used in conjunction with an externally located combustion member in which fuel is burned and compresses air for delivery to the combustion member and expands the combusted gas resulting from the fuel combustion in the compressed air. The vane motor and combustion member thus cooperate to form an external combustion engine. The energy extracted from the expansion of the gas is greater than the energy required to compress the air. The energy difference is delivered by a drive shaft external to the engine. The motor vanes slide quasi radially in guiding slots as the motor rotates to cause volumes of air trapped between contiguous vanes to decrease and trapped volumes of gas to increase concurrently. The vanes are thus subjected to pressure differentials which are applied quasi normally onto the vane sliding surfaces. The resulting torque is reacted by the action of high pressure air cushions located between the cooperating surfaces of the vanes and their slots. Physical contacts between the vanes and the slots is thus prevented. A similar use of air cushions is made to eliminate friction between the vane edges, other moving parts of the motor and those parts of the motor which are fixed.
REFERENCES:
patent: 3057157 (1962-10-01), Close
patent: 3339670 (1967-09-01), McGrew et al.
patent: 3502920 (1970-03-01), Chaboseau
patent: 3744942 (1973-07-01), Mount
patent: 3989011 (1976-11-01), Takahashi
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