Internal-combustion engines – Oscillating piston – Toroidal cylinder
Reexamination Certificate
1999-06-16
2001-02-13
Koczo, Michael (Department: 3748)
Internal-combustion engines
Oscillating piston
Toroidal cylinder
C074S050000
Reexamination Certificate
active
06186098
ABSTRACT:
TECHNICAL FIELD
The present invention relates, in general, to coaxial oscillating axisymmetric engines and, more particularly, to a coaxial oscillating axisymmetric engine with a plurality of rotating blades of a rotor being movable relative to a plurality of fixed blades of a cylindrical housing in opposite directions while forming expansion and compression chambers in each cylinder of a housing assembly, thus generating rotational force.
DESCRIPTION OF THE PRIOR ART
The conventional reciprocating engines have been utilized due to their efficient and simple conversion of reciprocating motion of the pistons, to a rotary motion via a crankshaft. However, the conventional reciprocating internal combustion engines have fuel efficiency limitations imposed by friction due to the multiplicity of moving parts. These moving parts generally include the bearing journals where friction increases with the speed of rotation and the number of bearings, and the piston rings that impose friction by the plurality components operating as a combined system that contributes significant friction to the engine as a whole.
In addition, thermal efficiencies of reciprocating internal combustion engines are decreased by the redundancy of the mechanical components, the materials used, the manner of operation and, the use of a common cylinder portion for all the cycle phase. Fuel efficient conventional reciprocating internal combustion engines do exist but are highly complex units. Such complexity makes manufacturing and assembly cost high.
The Wankel rotary engine has found application in motor vehicles because of its potential of high performance. For various reasons, however, it has not been utilized for general use as a replacement for the conventional piston engines such as commuter vehicles or mass produced small industrial engines.
Some other types of rotary engines have also been proposed. These include toroidal engines having a toroidal cylinder built in the cylinder housing around a driving shaft assembly, rotor supported for rotation about the drive shaft and coupled to pistons in the toroidal shaped cylinder whereby the pistons move cyclically toward and away from one another forming expanding and contracting working chambers within the toroidal cylinder, and, inlet and outlet ports extending through the cylinder housing assembly for entry and exit of fluid to and from the working chambers.
Typical prior arts of toroidal engines are outlined in “THE WANKEL ENGINE DESIGN DEVELOPMENT APPLICATIONS” by Jan P Norbye published by the Chilton Book Company. French patent No. 2498248 and German patent No. 3521593 illustrate prior art toroidal engines. Some of these engines utilize external mechanism to effect the cyclic motion of the pistons, which move within the cylinder, while others utilize swash plates and cams and the like in the power train to achieve the desired mechanical coupling of the drive components.
For the purpose of the production, it is considered that all these prior art engines have disadvantages either in efficiency, configuration, or satisfactory performance under normal working loads such as sustained optimum power delivery. Conclusively many of the prior art engines have many shortcomings such as sophisticated manufacturing and inefficient performance.
DISCLOSURE OF THE INVENTION
Accordingly, the present invention has been made in consideration of the problems mentioned above in the prior art. The first object of this invention is to provide a coaxial oscillating axisymmetric engine-which will be mentioned as CoReA engine hereinafter-which is provided with a rotor having the plurality of rotating blades, the rotating blades being movable relative to the plurality of fixed blades of a cylindrical housing in opposite directions while forming expansion and compression chambers in each cylinder of a housing assembly, thus generating rotational force which is transmitted to an output shaft through a power transmission unit.
The second object of this invention is to provide a coaxial oscillating axisymmetric engine being provided with valve driving mechanisms for periodically opening intake and exhaust ports of the housing assembly to supply air to each cylinder of the engine and to discharge the exhaust gas therefrom.
The third object of this invention is to provide a coaxial oscillating axisymmetric engine with cooling means to avoid thermal overload, combustion of the lubricating oil on the rotor sliding surface and uncontrolled combustion due to excessive temperature of a plurality of fixed blades surrounding a hot combustion chamber.
The fourth object of this invention is to provide a coaxial oscillating axisymmetric engine being provided with a lubrication unit to lubricate and cool all of the friction contacting parts.
In order to accomplish the first object, this invention provides a coaxial oscillating axisymmetric engine, comprising a housing assembly comprising; a first stator consisting of first and second annular discs, the second disc being provided with a plurality of regularly spaced fixed blades at one side thereof, a second stator arranged in parallel to and spaced apart from the first stator, thus forming a stator assembly in cooperation with the first stator, the second stator consisting of third and fourth annular discs, a cylindrical housing fitted over the first and second stators, thus closing the periphery of the stator assembly, a plate arranged the outside of the first stator; and a cover arranged the outside of the second stator and integrated with the plate using a plurality of locking bosses; a cylindrical rotor having a plurality of regularly spaced rotating blades at its periphery and rotatively arranged the inside of the housing assembly with the rotating blades being positioned between the fixed blades of the first stator, the rotating blades individually forming one variable expansion chamber and one variable compression chamber between the fixed blades; a gear box arranged the inside of the rotor; a toothed output shaft rotatively set in the gear box and extending to the outside of the housing assembly; and a power transmission unit used for coaxial and axisymmetrically transmitting a rotating force of the rotor to the output shaft through two toothed drive shafts, the drive shafts commonly engaging with the output shaft at their toothed parts the inside of the gear box.
The power transmission unit comprises: two guide rails inwardly mounted to the rotor at diametrically opposite positions and individually having a guide channel; a slider having a guide ball and a guide slot at both ends and movably engaging with each of the guide rails, and so to be linearly movable along the guide channel; and a ball housing coaxial and axisymmetrically coupled to the slider, the ball housing consisting of: a ball seat rotatively receiving the ball of the slider; and a connection part extending from the ball seat and rotatively coupled to each of the drive shafts.
In order to accomplish the second object, this invention provides a coaxial oscillating axisymmetric engine, comprising: a cylinder housing being provided with a plurality of regularly spaced fixed blades; a cylindrical rotor having a plurality of regularly spaced rotating blades at its periphery and rotatively arranged inside the cylindrical housing, said rotating blades individually forming one variable expansion chamber and one variable compression chamber between the fixed blades of the housing; a gear box arranged the inside the rotor; a toothed output shaft rotatively set in said gear box and extending to the outside of said housing assembly; an idle shaft is provided with an idle gear meshing with the opposite bevel gears of the two toothed driving shafts and arranging opposite side of the output gear of the output shaft; a power transmission unit used for coaxial and axisymmetrically transmitting a rotating force of the rotor to said output shaft through the driving shafts; inner covers surrounding both sides of said rotor to form a plurality of combustion chambers of the cylindrical housing; r
Koczo Michael
Nath & Associates
Novick Harold L.
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