Patent Application
20230358137
This present application claims the benefit of Indian provisional Patent Application 201941046899 filled on Nov. 18, 2019, and titled “R, G, S. ROTARY ENGINE”, which application is incorporated herein by reference in its entity.
The present disclosure relates generally to a rotary engine. Embodiments of the disclosure are related to a two stroke internal combustion rotary engine with Zindler curve eccentric ring gear. Embodiments of the disclosure are also related to method of working of a two stroke internal combustion rotary engine with Zindler curve eccentric ring gear.
Rotary engine is a kind of internal combustion engine, which is mainly used in aviation engineering and automobiles. Earlier times which was also used as an alternative for the inline or straight engine. It has so many advantages over other reciprocating internal combustion engines such as fewer moving parts, better reliability, less manufacturing cost, and less vibration.
A rotary engine includes a frame and interior of which is cylindrical shaped to form a chamber and rotor, and periphery is arranged in such a way that the rotor rotates within the chamber. Inlet and outlet valve in it will provide necessary suction, compression, combustion, and exhaustion phases. Disadvantages of the rotary engine are excessive wear in the sealing between the periphery of the rotor and the wall of the frame and low thermal efficiency as compared to the reciprocator engine which will cause high fuel consumption.
Among all rotary engines developed all over in the world Wankel engine is the most popular and widely used for industrial applications. And its works on Otto cyclic thermodynamic process. This engine suffers from certain problems such as leakage at the side seals, excessive wear and high fuel consumption.
The U.S. Pat. No. US5251596 discloses a two stroke cyclic rotary internal engine combustion engine of the Wankel type. The engine provides a flow through intake and exhaust with intake ports on one side wall of an epitrochoidal housing and exhaust ports on the opposite side wall. Compressed air is ducted to an intake plenum which provides a source of intake air as well as bypass air which is routed around the engine for engine cooling. A particular intake and exhaust man folding and port positioning provides centrifugal pumping for charging and scavenging. Both rotating and stationary housing engines are disclosed and a rotating housing engine having fuel charge stratification and centrifugal filtering of inlet air is also provided.
Another rotary engine disclosed in U.S. Pat. No. US3918415 comprises an elliptical cylinder, four piston elements operatively associated with each other to form a rotor in the shape of a regular quadrangle having angles which form a rhombus with sides of substantially equal length, said elliptical cylinder being concentric with a rotating shaft disposed in the centre of said regular quadrangle, the sides of said piston elements and the sides of the elliptical cylinder defining a plurality of chambers there between which extend between the respective vertices of the angles forming the regular quadrangle, and rod means for securing the centre portion of the piston elements to the rotating shaft.
Another rotary engine disclosed in U.S. Pat. Application No. US2010012077 A1 comprises of body, said body includes two generally cylindrical cavities therein; a main rotor mounted rotatable in one of said cylindrical cavities placed in the engine body; a secondary rotor mounted rotatable in the other cylindrical cavity placed in the engine body; an intermediate rotor, said intermediate rotor having one end and the other end, wherein one end of said intermediate rotor is rotatable mounted in the main rotor and the other end of said intermediate rotor is rotatable mounted in the secondary rotor.
There are so many variants of rotary internal combustion engines have been developed, but most of them were a failure at the commercial stage due to their high vibration, lack of required stability, overheat and inadequate cooling mechanism and so on. Moreover, all previously developed rotary internal combustion engines were not compatible with diesel fuel due to the lack of high compression ratio in such engines.
A need, therefore, exists for an improved rotary internal combustion engines system that overcomes above problems.
The principal object of the invention is to develop a two stroke internal combustion engine.
Another object of the invention is to develop a two stroke Zindler curve eccentric ring gear internal combustion rotary engine.
Another object of the invention is to develop a two stroke Zindler curve eccentric ring gear internal combustion rotary engine with an equilateral triangular rotor of minimal eccentricity, consists of one or more planetary gear on either sides of a sun gear, so that the engine does not have any vibration.
Another object of the invention is to develop a two stroke Zindler curve eccentric ring gear internal combustion rotary engine which has high compression ratio so that diesel fuel can also be used.
Another object of the invention is to develop a two stroke Zindler curve eccentric ring gear internal combustion rotary engine which is more efficient than the reciprocating engine.
Another object of the invention is to develop a two stroke Zindler curve eccentric ring gear internal combustion rotary engine which uses effective cooling system.
Another object of the invention is to develop a two stroke Zindler curve eccentric ring gear internal combustion rotary engine which can be modified so that other fuels can also be used.
Another object of the invention is to develop a two stroke Zindler curve eccentric ring gear internal combustion rotary engine which does not have any valve mechanism.
Another object of the invention is to develop a two stroke Zindler curve eccentric ring gear internal combustion rotary engine which has higher thermal efficiency.
The following summary is provided to facilitate an understanding of some of the innovative features unique to the disclosed embodiment and is not intended to be a full description. A full appreciation of the various aspects of the embodiments disclosed herein can be gained by taking into consideration the entire specification, claims, drawings, and abstract as a whole.
A two stroke internal combustion rotary engine with Zindler curve eccentric ring gear and method of working of a two stroke internal combustion rotary engine with Zindler curve eccentric ring gear is disclosed. The engine has an equilateral triangular rotor with curved shaped eccentric ring gear with teeth cuts. An output shaft is fixed about to the center of the engine with a center spur gear and it also connected to same sized another two spur gear on the left or right sides of the center spur gear. When engine start working, the equilateral triangular rotor and eccentric ring gear will rotate eccentrically along with the left or right spur gears connected to it, by running over the teeth cuts. When center spur gear rotates it will rotate the left or right spur gears connected to it and these left or right spur gears will rotate the eccentric ring gears connected to it by running on the teeth cuts.
A two stroke internal combustion rotary engine with Zindler curve eccentric ring gear and method of working of a two stroke internal combustion rotary engine with Zindler curve eccentric ring gear is disclosed. The engine has an equilateral triangular rotor with Zindler curve eccentric ring gear with teeth cuts. An output shaft is fixed about to the center of the engine with a center spur gear and it also connected to same sized another one spur gear on the left or right sides of the center spur gear. When engine start working, the equilateral triangular rotor and Equilateral triangular eccentric ring gear will rotate eccentrically along with the left (or right) spur gear connected to it by running over the teeth cuts. When center spur gear rotates it will rotate the left or spur gear connected to it and these left spur gear will rotate the eccentric ring gears connected to it by running on the teeth cuts.
In a first aspect of the present disclosure, two stroke internal combustion rotary engine, the engine characterized in that: an equilateral triangle rotor comprising: at least one center spur gear; at least one side spur gear located on a side of the center spur gear; a rotor casing for housing the center spur gear and the side spur gear; and a ring gear formed on the inner surface of the rotor casing, wherein the center spur gear and the side spur gear eccentrically rotates by engaging with at least one teeth of the ring gear; an engine casing for housing the equilateral triangle rotor; a main shaft connected to the center spur gear; and a pair of engine covers for covering a top face and bottom face of the engine casing, wherein the engine covers comprises: at least one bearing slot at the center of the engine covers for allowing the shaft to pass through; at least one small bearings fitted on the engine covers to allow proper fitting of the side spur gear; and at least one groove housed with at least one steel ball fitted on the covers.
According to an embodiment in conjunction to the first aspect of the present disclosure, wherein the groove is a closed groove.
According to an embodiment in conjunction to the first aspect of the present disclosure, wherein the steel ball rolls over the closed groove when the equilateral triangle rotor rotates.
According to an embodiment in conjunction to the first aspect of the present disclosure, wherein the engine cover has an inlet hole through which at least one coolant passes through an inner surface of the equilateral triangle rotor and over the side spur gear and the center spur gear.
According to an embodiment in conjunction to the first aspect of the present disclosure, wherein the engine covers has an outlet hole through which the coolant after absorbing an excess heat produced by the engine during combustion process.
According to an embodiment in conjunction to the first aspect of the present disclosure, wherein the side spur gear of the equilateral triangle rotor when eccentrically rotates by engaging with at least one teeth of the ring gear, a rotation path is formed on an inner peripheral surface of the rotor casing.
According to an embodiment in conjunction to the first aspect of the present disclosure, wherein the rotation path in the rotor casing is used to form the geometric structure of the engine casing.
According to an embodiment in conjunction to the first aspect of the present disclosure, wherein a combustion chamber is formed between the equilateral triangle rotor and the rotor casing.
According to an embodiment in conjunction to the first aspect of the present disclosure, the equilateral triangle rotor rotates in opposite direction of that of the main shaft.
According to an embodiment in conjunction to the first aspect of the present disclosure, wherein the steel balls fall into the rotation path on the inner peripheral surface of the rotor casing, when the equilateral triangle rotor rotates.
According to an embodiment in conjunction to the first aspect of the present disclosure, wherein a required fixed speed of the main shaft is obtained by varying selecting a diameter of at least one of the center spur gear or the side spur gear.
According to an embodiment in conjunction to the first aspect of the present disclosure, wherein the engine cover has at least one hole to allow at least one coolant to enter the equilateral triangle rotor and absorb the excess heat during combustion process.
According to an embodiment in conjunction to the first aspect of the present disclosure, wherein the engine covers has at least one hole to remove the excess heat produced after combustion process.
According to an embodiment in conjunction to the first aspect of the present disclosure, wherein the coolant passes from the hole of the engine cover enters into the equilateral triangular rotor flows over the side spur gears and the center spur gear.
According to an embodiment in conjunction to the first aspect of the present disclosure, wherein rotation of the equilateral triangular rotor generates at least three power strokes in one revolution.
According to an embodiment in conjunction to the first aspect of the present disclosure, wherein the three power stroke includes three suctions, three compressions and three exhausts.
In a second aspect of the present disclosure, a method of working of the two stroke internal combustion rotary engine, the thermodynamic method are performed to rotate the equilateral triangular rotor inside the engine casing, the method characterized with the following steps: opening the inlet port to inject fuel into a compression or combustion chamber, at angle 170 degree; closing the inlet port when the rotor rotates to about angle 160 degree; forming spark from the spark plug at angle between 70 to 60 degree spark; igniting the compressed air and fuel mixture in the compression chamber; beginning expansion of ignited air and fuel mixture from angle 60 degree; undergoing expansion process in engine and finally complete the expansion at angle 220 degree; opening the exhaust port when the rotor rotates at angle 220 degree; starting the exhaustion process and finally exhaust port closes at angle 210 degree; starting vacuum process from angle 210 degree; sucking fresh air from outside and completes a first thermodynamic cycle at angle 170 degree; and preparing the engine for the subsequent thermodynamic cycle.
According to an embodiment in conjunction to the second aspect of the present disclosure, wherein the first thermodynamic cycle preforms the steps of: rotating the equilateral triangular rotor inside the engine casing; rotating the side spur gear when the ring gear in the equilateral triangular rotor rotates; rotating the center spur gear when the side spur gear rotates; and rotating the main shaft when the center spur gear rotates.
The summary above, as well as the following detailed description of illustrative embodiments, is better understood when read in conjunction with the appended drawings. For the purpose of illustrating the present disclosure, exemplary constructions of the disclosure are shown in the drawings. However, the disclosure is not limited to specific methods and instrumentalities disclosed herein. Moreover, those in the art will understand that the drawings are not to scale. Wherever possible, like elements have been indicated by identical numbers.
The particular configurations discussed in the following description are non-limiting examples that can be varied and are cited merely to illustrate at least one embodiment and are not intended to limit the scope thereof.
The present disclosure relates generally to a rotary engine. Embodiments of the disclosure are related to a two stroke internal combustion rotary engine with Zindler curve eccentric ring gear. Embodiments of the disclosure are also related to method of working of a two stroke internal combustion rotary engine with Zindler curve eccentric ring gear.
The pair of side spur gears 10 are located on either side of the center spur gear 11. The rotor casing 14 houses the center spur gear 11 and the pair of side spur gears 10. The ring gear 8 is formed on the inner surface 13 of the rotor casing 14. The center spur gear 11 and the side spur gears 10 eccentrically rotates by engaging with at least one teeth of the ring gear 8. The center spur gear 11 of the rotor 7 is connected to the shaft 12, which is used to transmit the rotational energy of the rotor 7 to the devices, for example, related to aviation engineering and automobiles. The engine casing 1 houses the equilateral triangle rotor 7. A combustion chamber 35 is formed in the space between the equilateral triangle rotor 7 and the engine casing 1. In the combustion chamber 35, after fuel is injected into it, the combustion of the fuel-air mixture takes place to start the thermodynamic process of the present invention.
It should be noted that the ring gear 8 or the rotor 7 is of a Zindler curve shape. The Zindler curve is a simple closed plane curve with the defining property. All chords, which cut the curve length into halves, have the same length. One example of such Zindler curve of ring gear 8 is shown in
In
The outer casing 1 is made-up of a top face 31 and bottom face 32, which are covered or closed using the pair of engine covers 16, 17 of
If a path of a point on the corner of the equilateral triangular rotor is traced, it will give a geometrical structure corresponding to its path of rotation in the surface in which it rotates. This geometrical structure will give the dimension for the construction of outer casing of the engine. The outer casing is made-up of two side surfaces, one is on the upper side and another on the lower side of the engine and the disclosed invention does not have any valve mechanism. The engine rotor will keep rotating until this cyclic process of suction, compression, expansion, and exhaustion continuing. One example of the path traced is a Zindler curve.
When the engine 30 starts working, the equilateral triangular rotor 7 and eccentric ring gear 8 will rotate eccentrically along with the left or right spur gears 10 connected to it, by running over the teeth cuts. When combustion process starts, the rotor 7 rotates which will rotate the eccentric ring gears. The teeth of eccentric ring gears are engaged with the teeth of the left and/or right spur gears 10. Rotation of the eccentric ring gears rotates the left and/or right spur gears 10 which in turn rotates the center spur gear 11, thus rotating the shaft 12.
Referring to
The rotor 7 is always rotating in opposite direction of that of the main shaft 12 that is whenever the main shaft 12 rotates in clock wise direction, the equilateral triangular rotor 7 will rotate in anti-clock wise direction.
It should be noted that the radius of curve of equilateral triangular rotor 7 is approximately equal and always less than that of radius of curve of outer engine casing 1, so that the equilateral triangular rotor 7 can freely rotates within the peripheral of engine casing 1 without any distractions.
The present invention uses a rotor cooling mechanism working either by water or air. The rotor cooling mechanism maintain the optimum temperature, for example, 80 degree C, of the equilateral triangular rotor 7, so that the engine 30 can carry out the proper thermodynamic process. The hole 20 or inlet hole 20 provided in the top face cover 17, as shown in
Referring again to
Most commonly using engine does not have this speed controlling mechanism due to the lack of gear driven mechanism in all these engines. But this longstanding defect is rectified by the peculiar design of present invention engine 30 in which the power can be drawn only from the linearly arranged spur gears 10, 11 such as center spur gear, left, and right spur gear. The rotation path 15 is formed on the inner peripheral surface of the rotor casing 14 is shown clearly in
A rotation path 15 in inner peripheral surface 13 of the rotor casing 14 is traced using at least one corner point of the equilateral triangular rotor 7, by rotating the rotor 7. The rotation path 15 is used to get a geometrical structure and dimension for the construction of engine casing 1of the engine 30.
The center of inner periphery surface 13 of the equilateral triangular rotor 7 has teeth cuts known as ring gear 8. The ring gear 8 is always in an eccentric rotation hence also referred as eccentric ring gear 8. A set of linearly arranged spur gears such as center spur gears 11, the left or right spur gears 10 are connected to each other as shown in
It should be noted that the engine casing 1 is covered using the engine covers 16, 17 by tightly securing to the engine covers 16, 17 to the engine case using at least one securing means. The main shaft 12 connected to the center spur gear 11 leaves outside through the main bearing slots 18 at the center of the engine covers 16, 17. Similarly, the side inner shaft 36 connected to the left or right spur gears 10 leaves outside through the main small bearing slots on either side of the center of the engine covers 16, 17. Any suitable bearing seat can be used to fix all these bearing slots.
As shown in graph 70, the inlet port is opened between the angles 170 degree to 160 degree of the rotor, as indicated by the reference numeral 71. The spark plug ignites the compressed air and fuel mixture in the compression chamber between the angles 70 degree to 60 degree of rotation of the rotor, as indicated by the reference numeral 72. When the rotor rotates 220 degree, the exhaust port opens and starts the exhaustion process and finally it closes at 210 degree, as indicated by the reference numeral 73.
It should be noted that for all existing engines to start their working, it requires an initial drive and usually which is provided by any kind of external agents for example, a self-starter. The disclose invention also uses such self-starter, and it is connected to a flywheel. As the self-starter rotates, the flywheel also rotates, on its initial drive the equilateral triangular rotor 7 will begins to rotate and at 170 degrees, the inlet port 2 will become open and air get sucked in to the suction chamber. This initiates the thermodynamic process.
The equilateral triangular rotor 7 has three steel balls 23 fixed each on three groove 22 at an apex of the rotor casing 14, as shown in
It should be noted that the method includes the three power stroke including three suctions, three compressions and three exhausts. The thermodynamic cycle rotates the equilateral triangular rotor inside the engine casing. The ring gear in the equilateral triangular rotor starts rotating and in tum rotates the side spur gear. The side spur gear rotates the center spur gear engage with it, which in tum rotates the main shaft.
The internal combustion rotary engine of present invention comprises the Zindler curve eccentric ring gear with an equilateral triangular rotor of minimal eccentricity. The rotor consists of at least one planetary ring gear on the sides of a main sun gear, so that the engine does not have any vibration. The rotary engine of present invention has high compression ratio so that diesel and other fuels can also be used. Further, the rotary engine uses effective cooling system and is more efficient than the reciprocating engine. Another main advantage of the present invention is that the two stroke Zindler curve eccentric ring gear internal combustion rotary engine which does not have any valve mechanism and has higher thermal efficiency.
It will be appreciated that variations of the above disclosed and other features and functions, or alternatives thereof, may be desirably combined into many other different systems or applications. Also, various presently unforeseen or unanticipated alternatives, modifications, variations or improvements therein may be subsequently made by those skilled in the art which are also intended to be encompassed by the following claims.
Although embodiments of the current disclosure have been described comprehensively in considerable detail to cover the possible aspects, those skilled in the art would recognize that other versions of the disclosure are also possible.
| Number | Date | Country | Kind |
|---|---|---|---|
| 201941046899 | Nov 2019 | IN | national |
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/IN2020/050964 | 11/17/2020 | WO |
