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History
Mankind has used various tools even before the dawn of civilization which enabled people to utilize the resources required for survival more efficiently than before. The initial stone tools were used as knife edge which slowly but steadily graduated to projectiles, spear & wheels etc. The incremental advancement in tools and their use helped use resources even more efficiently and thus provided even more surety of survival.
At the same time the use of fire and devising the methods to create fire with simple tools at will, also improved the security of life and so the drive for devising improved means for utilizing the recourses ever more efficiently empowered mankind with better means, in the fight for survival. The means devised, bettered the chances of survival and many a times the better equipped ones could push survival of their kind more than the others. Hence the dependence on ever more complicated means and the ability to devise even better means formed a self complementing cum self propagating cycle.
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These instincts helped various human civilizations to reach new heights, where efficient utilization of resource on a large scale was possible and helped propel mankind as the most sophisticated species on earth. These essential traits lead to the advent of complicated machines and enabled mankind to handle and manipulate his surrounding to his convenience (always connected to unknown repercussions).
Machines are used for various purposes and such purpose could be performing some specific operations. These operations may be like transporting material, transferring water or pressurizing air etc. |
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Conventional I.C. ENGINE Working Principle
One of the most important machines that shaped the 20th Century of human life in a very profound manner is the Internal Combustion Engine or Simply I.C. Engine. The use of Engines is universal and forms the back bone of transportation and thus the economy.
In an IC Engines the chemical energy of fuel, (burning of gas/petrol, Diesel, heavy oil etc) is converted into mechanical kinetic energy (rotation of the wheels of a car).This conversion is affected by a mechanism (piston and crank Mechanism or simply crank mechanism) Engines used in cars, Bikes, trains, generators, prime movers, material handling equipments, cranes, earth movers, ships, air crafts and helicopters etc.
Engines are machines that depend on fossil fuels and facilitate the converting the chemical energy within the fuels into heat energy and this energy is then converted into use full work. This means that the fuel is burnt inside the engine instantaneously in an explosion with help of air and heat. The explosive force propels the burnt gases at high velocities in all direction and exerts a pushing force on the walls of the chamber within which the explosion occurs. |
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The pushing gases are thwarted by rigid walls of the chamber leading to an increase in the pressure of the gases within the chamber; however one of the chamber’s inner walls is not rigidly fixed to the other immobile parts of the chamber. This element called the Piston. The gases push the piston outward in a straight line and are more or less a solid straight metallic cylinder that fits closely inside a liner which is the shape of a straight cylindrical shaped tube. The motion of the piston is guided and constrained in a straight line by the liner. This straight line movement of the piston is converted into rotation of a shaft and this finally results in the rotation of wheels of a car, or bike etc.
The liner and the piston are part of a mechanism called the crank mechanism. The crank mechanism is essentially converts the energy within the fossil fuel into rotation of the wheels. The I.C. Engines forms the heart of any automotive unit and the Crank mechanism form's the core of an engine. The crank mechanism in use today was invented and developed in Western Europe in late 19th and early 20th century. The Crank Mechanism has never changed since then and it is now saturated to the extent that it is not able to suffice for the current and forthcoming challenges of the I.C. Engine Industry. There various challenges to the engine industry in the 21st century which originated from use of fossil fuel.
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The invented two vane rotary mechanism is the alternative mechanism, with various advantages over the conventional crank mechanisms. |
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RVCR Working Principle
The invention is about a Rotary mechanism with two circular but curved piston vanes fitted on to two coaxial hollow cylindrical sleeves mounted on a central shaft, whose axis forms the sleeve’s rotating axis, wherein the vanes are placed inside a round hollow chamber angularly displaced from each other, forming two enclosed sealed gas volumes. The vane’s rotation inside the chamber is controlled by means of timing devices and linkages, such that the vanes either rotate independently, or held stationary or rotated simultaneously in a unique sequence which is the core characteristic of the invention. |
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Advantages
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limination of reversal of stroke. Eliminates reversal of inertia forces and mass.
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Conventional engines are either 2 & 4 stroke ENGINES. With RVCR mechanism the equivalents are single and dual stroke. Thus halving the strokes required.
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Variable compression ratio,
i.e. every specimen engine adaptable to perform according to desired/varying thermodynamic cycle (namely Otto, diesel, dual).
Thus the engine burns fuel of choice.
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This variation in compression Ratio can be brought about while the engine is in Operation by shifting of a set of cams followers.
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Variable compression ratio also means better thermal efficiency.
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No crosshead, gudgeon and the piston equivalents are hinged (and not floating on a gudgeon or a crosshead) thence no slapping of piston /elimination of associated vibrations i.e. vibration of second and higher order.
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Size to power ratio to reduce to near half . Engine will be smaller for a particular out put than conventional engines.
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The third element by the way of radius along with stroke and bore available for designers. (To cater to space, size constraints).
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OTHER advantages like elimination of crankcase. Obvious advantages W.R.T? lubricating oil deterioration and safety hazards like Crank Case explosion.
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External bearings (thus obvious advantages. Wrt?monitoring, maintenance etc).
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Vane (piston) position dependent Cylinder lubrication (thru vanes). Thus piston Lubrication not just load or speed based but injection Control as a function of piston position also.
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Large flywheel is eliminated as the heat addition process and compression of fresh charge occurs on opposite sides of vane piston and this occurs simultaneously
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The Invention, titled “Apparatus adopted to perform as a compressor, pump, motor, metering device and an internal combustion engine”, is about an engineering mechanism alternative to the crank (reciprocating piston, oscillating connecting rod and crank) mechanism.
The Invention is a seed technology, applicable to across the spectrum engineering applications which, as implied by the title, and leads to a series of varied new genre "efficent and lower carbon foot-print" down stream products.
The technology encompassing the seed engineering mechanism is not just limited to straight applications listed in the title and applies to vivid lower derivative products like metering devices, Variable delivery pumps, dosing applications and in biomedical equipment etc. A similar example is the mechanism applied to wind power, tidal power generators results in better efficiency “wind and water motors” which are used for generating powers. Such product are designed and developed by gyatk.
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VCR I.C. Engines based on the mechanism.
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