Internal-combustion engines – Transmission mechanism from piston
Patent
1994-02-01
1995-06-20
Okonsky, David A.
Internal-combustion engines
Transmission mechanism from piston
F01B 904
Patent
active
054253349
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
This invention relates to an engine for transmitting pressure received by a piston within a cylinder to an output shaft as effectively as possible in a piston engine, and more particularly to an Oldham's driving engine for allowing large expansion energy at the moment when the piston is moved from a top dead center toward a bottom dead center to output effectively as the torque for revolving the output shaft.
PRIOR ART
As for an engine which has been practically in wide use in a prior art, a piston engine for transmitting the reciprocating motion of a cylinder to a crankshaft as a rotational motion through a rod and a crank, and a rotary engine having a combustion chamber provided around a rotor to rotate directly the rotor have been known. However, the rotary engine is only used for one having special specifications by reason of high fuel cost or the like, although an output shaft is revolved smoothly to result in sufficient output efficiency.
On the other hand, in the prior art piston engine, it has been known from the combustion-dynamical point of view that the pressure in the cylinder becomes maximum at the time of an explosion under the condition that the piston is located at the top dead center position, and that the pressure is rapidly reduced immediately after the starting of a piston operation after the explosion.
However, when the piston is located at the top dead center position, a piston rod and a crank arm are in a rectilinearly connected state on the axial center of the cylinder. In this state, it is mechanically impossible to convert the extrusion energy of the piston rod into the rotation energy of the crank arm. In order to compensate for such disadvantages, a flywheel is mounted on the side of a crankshaft. However, such a problem as the energy transmission efficiency of the maximum combustion pressure immediately after the explosion is extremely bad remains unsolved.
It is an object of the present invention to provide an Oldham's driving engine for taking out the maximum combustion pressure in the neighborhood of a top dead center of a piston to an output shaft effectively so as to dissolve the problems described above.
DISCLOSURE OF THE INVENTION
The present invention relates to an engine constituted such that a cylinder for allowing a piston connected to the tip end of a rod to insert thereinto is fixed to a case for rotatably and axially supporting an output shaft revolved in linkage with the reciprocating motion of the basal end of the rod.
A flange,shaped sliding block is accommodated in the case, and connected to the end of the rod as being rotatably and axially supported thereto. An idler flange rotatably and axially supported to the inside surface of the case and an output flange fixed to the output shaft are provided on both sides of the sliding block through a certain distance between the axes of both the idler flange and the output flange. Also, irregular stripes slidably fitted to each other and alternately crossing are formed on both surfaces of the sliding block and the inside surfaces of both the idler flange and the output flange.
According to the engine of the present invention constituted as described above, high driving force of the piston is obtained at the slight moment when the combustion pressure becomes maximum at the time of combustion at the top dead center position of the piston in the piston engine, and then the obtained high driving force can be transmitted to the output side at the efficiency extremely higher than that in case of using a prior art crankshaft. As a result, the amount of energy to be taken out to the output side becomes also large, and the output shaft can be smoothly revolved as well.
Further, since the revolving speed of the output shaft with respect to the piston driving force is reduced to half in comparison with that of a crankshaft type, a speed reducing mechanism can be omitted by the corresponding part.
Furthermore, according to the engine of the present invention, the axial center of the idler flange and that of
REFERENCES:
patent: 3563222 (1971-02-01), Ishida
patent: 4073196 (1978-02-01), Dell
patent: 4970995 (1990-11-01), Parsons
Okonsky David A.
Yonehara Giken Co., Ltd
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