WO2010101148A1

WO2010101148A1 - Rotary engine

Info

Publication number: WO2010101148A1
Application number: PCT/JP2010/053344
Authority: WO
Inventors: 金井勝男
Original assignee: Kanai Katuo
Priority date: 2009-03-04
Filing date: 2010-03-02
Publication date: 2010-09-10
Also published as: JP2009185822A; JP4389236B2

Abstract

Provided is an efficient rotary engine which can use various types of fuels including gasoline, light oil, and heavy oil, and achieves improvement of combustion efficiency and cleaning of exhaust gas, and which can perform compression/explosion, exhaust, and suction by one rotation of a rotor and perform compression/explosion at multiple positions within a casing. The rotary engine comprises within a casing two rotors each comprising at least five blades each configured from an involute curve, the rotors being disposed side by side in the casing such that the blades mesh with each other, and the rotary engine explodes vaporized fuel by the blades of the two rotors compressing the vaporized fuel between the blades and between the blades and rotor bases during the rotation of respective blades.

Description

Rotary engine

The present invention relates to a rotary engine, and more particularly to a rotary engine having two rotors having a plurality of blade portions in a casing and capable of performing a compression explosion by rotation of the rotor.

Conventionally, a rotary engine has a so-called saddle-shaped casing having an inner peripheral contour based on a trochoidal curve, and a generally rice ball-shaped rotor whose outer contour is an envelope inside a trochoidal curve, while rotating in planetary motion while sliding in contact with the casing. However, as the volume of the space formed by the casing inner surface and the rotor surface changes, intake, compression, explosion, and exhaust are repeated.

In addition, as a rotary engine using a rotor having a plurality of blade shapes instead of a substantially rice ball-shaped rotor having an envelope in a trochoid curve as an outer peripheral contour, Japanese Patent Application Laid-Open No. 2008-45534 (Patent Document 1) No. 70776 (Patent Document 2) and JP-A-2005-315205 (Patent Document 3) exist.
There is also JP 2009-24694 by the inventor of the present invention.

JP 2008-45534 A JP 2006-70776 A JP-A-2005-315205 JP 2009-24694 A

As described above, there are some rotary engines that use a rotor having a plurality of blade shapes instead of a substantially rice ball-shaped rotor having a trochoidal curve inner envelope as an outer peripheral contour.
In such a case, first, in the structure shown in Patent Document 1, an involute curve is used, but this has a curved surface portion formed when the tip portion is notched, and there is a high risk of breakage in the blade edge portion. There is also a need for other methods that can increase fuel efficiency.
Further, Patent Document 2 and Patent Document 3 are proposed as using three rotors.

Furthermore, Patent Document 4 is extremely innovative and useful, but it requires four half-rotors, and the development of a rotary engine that is more compact, more efficient, and more fuel efficient. Is also desired.
As described above, it is required to provide some kind of rotary engine that can further improve fuel efficiency, and it is also necessary to provide a rotary engine that enables more efficient combustion and high output and high rotation speed. Therefore, an object of the present invention is to provide an invention that solves such a problem.

Therefore, the invention according to claim 1 includes two rotating rotors A and B each having at least 5 blades each having an involute curve in the casing, and the blades of the rotors A and B respectively. The rotor is composed of a casing having an inner diameter along the rotation of the blade portion, and the two rotors A and B are arranged so that the blade portions are engaged with each other in the casing. As the blades rotate, the vaporized fuel is compressed between the blades and the rotor base as the blades rotate. As a result, the rotor A and the rotor B are engaged and rotated. After the compression explosion is performed by the blade portion of the rotor A and the blade portion of the rotor B in the base portion direction of the rotor A, the rotor is rotated in the base portion direction of the rotor B by the rotation of the rotor. And it performs compression explosion by the blade portion of the blade part and the rotor A of motor B.

Furthermore, these are rotary engines that perform compression explosion by alternately repeating compression explosions in the direction of the rotor base, respectively, and compression by the blades and the rotor base, explosion in the direction of the rotor base, exhaust gas accompanying passage of the exhaust part, It consists of a rotary engine that sequentially performs the intake air accompanying the passage of the intake portion by one rotation of the rotor, and further includes a rotary engine that forcibly intakes air from the intake portion by rotating a turbine that uses exhaust from the exhaust portion. Is.
The said subject can be solved by the invention which concerns.

Further, the invention according to claim 2 is a rotary engine including two rotors of rotor A and rotor B each having six blade portions each having an involute curve, and may be the invention.

Or you may use the rotary engine which is a rotor which has the blade | wing part of the same number for both the rotor A and the rotor B like the invention which concerns on Claim 3.
In these cases, as in the invention according to claim 4, the casing has an intake portion and an exhaust portion, and the exhaust portion has a primary exhaust portion and a secondary exhaust portion. A rotary engine that performs primary exhaust, secondary exhaust, and intake by one rotation may be used.

In this case, as in the invention according to claim 5, an airflow plate may be arranged in the intake portion to generate turbulent airflow in the intake portion, and the air and fuel mixing efficiency may be increased.
Further, the rotor has an oil conducting path as in the invention according to claim 6, and the rotary engine that guides oil to the surface of the rotor, or the oil conducting path as in the invention according to claim 7, You may use the rotary engine provided in the side surface of the blade | wing part toward the front-end | tip part direction from the rotor base.

In addition to these, as in the invention according to claim 8, a cooling water conduction path is provided in the blade portion of the rotor from the rotor base toward the tip, and the cooling water passes through the conduction path. A rotary engine for cooling the rotor may be used, and cooling water is supplied from the cooling water intake through the shaft portion of the rotor and guided in the rotor blade portion as in the invention according to claim 9. The cooling water is guided from the rotor base to the tip through the conduction path and further from the tip to the rotor base by the cooling conduction path, and the cooling water is led out from the inside of the rotor through the cooling water outlet. It may be for cooling.

Alternatively, the cooling air may be used instead of the cooling water as in the invention according to claim 10, or the cooling oil may be used instead of the cooling water as in the invention according to claim 11.
Furthermore, it is a matter of course that a flywheel is provided as in the invention according to claim 12 and the flywheel is rotated by the rotational power of the rotor.

Since it is configured as described above, the following effects are exhibited.
First, the invention according to claims 1 to 3 can provide a rotary engine having a configuration different from that of a conventional rotary engine.
This is because the blades provided on the two rotors can be repeatedly narrowed and widened with the rotation of the rotor. In the blade portion, the compression and explosion can be performed twice on the front and back surfaces.
Therefore, it is possible to provide an efficient and high-rotation rotary engine.

Further, the exhaust smoke that is exhausted can be burnt cleanly with increased combustion efficiency.
From this, it becomes possible to use not only various fuels, that is, gasoline, but also light oil and heavy oil.
Further, the invention according to claim 2 or claim 3 makes it possible to perform the rotation of the two rotors more efficiently and reliably, and to make the explosive force of each continuous rotation constant. .
Next, with the invention according to claim 4, the exhaust efficiency can be further increased, and the rotation efficiency and the combustion efficiency can be improved.

Furthermore, the invention according to claim 5 can increase the mixing efficiency, and the intake efficiency can be improved.
Next, according to the sixth aspect of the present invention, lubricating oil can be infiltrated during the rotation of the rotor, so that the rotational efficiency and the combustion efficiency can be improved.
According to the seventh aspect of the present invention, oil can be guided toward the blade tip, and can be infiltrated into the entire rotor by centrifugal force, capillary action, etc. as the rotor rotates.
Further, according to the eighth aspect of the invention, the cooling water can be guided into the rotor, and the rotor can be cooled.

According to the invention according to claim 9, the cooling water can be circulated through the shaft portion of the rotor, and after the cooling effect is obtained in the rotor, it can be recooled outside through the shaft portion. It is possible to provide cooling water.
According to the tenth aspect of the present invention, it is possible to determine whether the rotor is a British customer by using cooling air. According to the eleventh aspect, the rotor can be cooled using the cooling oil.
Further, according to the invention of claim 12, the compressed high-pressure intake can be performed, the rotational force of the rotor is increased and the high rotation is enabled, and the high output can be generated.

The figure which shows an example of the outline of the basic composition of the rotary engine which concerns on this invention The figure which shows an example of the outline of the process of performing a compression explosion by engagement with the blade | wing part of the rotor which concerns on this invention, and the blade | wing part of a rotor. The figure which shows an example of the airflow board of the rotary engine which concerns on this invention The figure which showed an example of the oil conduction path of the rotary engine which concerns on this invention, a connection part, a cooling water intake, and a cooling water extraction port The figure which shows an example of the oil conduction path formed in the blade | wing part of the rotor of the rotary engine which concerns on this invention, and a connection part. The figure which shows sectional drawing of an example of the rotary engine which concerns on this invention The figure which shows sectional drawing of an example of the rotary engine which concerns on this invention The figure which showed an example of the cooling water conduction path formed in the blade | wing part of the rotor of the rotary engine which concerns on this invention, a cooling water intake, and a cooling water extraction port The figure which shows sectional drawing of an example of the rotary engine which concerns on this invention

FIG. 1 is a diagram showing an example of a schematic configuration of a rotary engine according to the present invention.
As shown in the figure, a rotor 2 having blade-shaped blade portions 21 each having an involute curve in a base portion 20 of the rotor is disposed at two locations in the casing 1.
The base portion 20 of the rotor 2 has a total of six blade portions 21, and each rotor 2 is disposed two in the vertical direction so that the blade portions 21 are engaged with each other. is there.
The rotor 2 is disposed in the casing 1 having an inner diameter along with the rotation of the blade portion 21 on the extension of each blade portion 21 of the base portion 20, and the rotor 2 is rotatably supported by the rotor 2. Is.

Further, each has an intake portion I and exhaust portions O1 and O2, and an ignition portion for ignition (not shown).
Further, in the intake portion I, vaporized fuel is ejected into the casing 1 by injection.
Therefore, the total of the two rotors 2 rotate and repeat the necessary intake, ejection of vaporized fuel, compression, explosion by ignition, and exhaust.
In this figure, although the intake part I and the exhaust parts O1 and O2 are shown, this does not show a specific place and shape, but shows that it should just have this mechanism in this vicinity.

In addition, although compression and an explosion process are performed by the blade | wing parts 21 of each rotor 2, regarding the ignition point etc., what is necessary is just to provide in the arbitrary positions which can be ignited exactly.
Accordingly, even if the intake portion I exhaust portions O1 and O2 are provided at different locations away from the illustrated location and the ignition point is at an arbitrary position, it is of course included in the present invention. The installation location is merely a schematic structure.
The exhaust parts O1 and O2 have exhaust parts at two locations. The exhaust part O1 is a primary exhaust part O1, and exhaust is first performed here, but an exhaust part O2 is further provided to provide a secondary exhaust part. O2 eliminates the high-pressure state due to the exhaust remaining between the blade portions 21, and facilitates intake from the intake portion I in the next step.

In the intake section I, an air-fuel mixture pressurized by a turbine is sent (not shown).

Thus, the rotary engine using two rotors can be rotated efficiently and reliably.
Note that the pressurized air-fuel mixture at the time of intake in the intake section may be, for example, a structure in which the turbine is rotated by using exhaust exhausted from the exhaust section, thereby increasing the pressure of the intake air.
It is a so-called turbocharger and desirably has this configuration.
Thereby, intake can be performed efficiently.
Of course, a so-called supercharger that directly uses the output of the engine may be used.

Further, it may be equipped with a heat exchanger so that the heat of the exhaust can be efficiently given to the intake during the intake, and for example, it can be efficiently exchanged with the intake by making it possible to exchange heat in a turbine using the exhaust. Heat can be applied.
Next, fuel is ejected by injection in the carburetor. For this ejection, a mechanical type or an electronically controlled type may be used.
Furthermore, the air-fuel mixture supplied from the air intake section may generate turbulence in the air intake itself in order to further improve the air and fuel mixing efficiency.
For example, an airflow plate may be arranged in the intake pipe to generate turbulence in the pipe.

Next, when the rotation of the rotor 2 is viewed, it first comprises the rotor A and the rotor B. The rotor A is inhaled at the first point of engagement with the blade portion 21 of the rotor B, and further the rotor A and the rotor B With the rotation, the gap between the blades narrows and compression explosion occurs.
Further, a gap generated between the blades with the further rotation of the rotor A and the rotor B due to the explosive force and the like is widened, and the air is exhausted at an arbitrary position.
Further, in order to further improve the exhaust efficiency, exhaust is performed from the secondary exhaust port.
As described above, the rotation can be given extremely efficiently.
In this case, since the combustion state after the explosion is maintained in the casing 1 for about one-fourth rotation, complete combustion of the gas can be achieved.

Next, although not explicitly shown in the figure, a flywheel may be provided on the power take-out side to provide rotational power.
For example, a flywheel may be provided on the output shaft, and inertia by the flywheel may be given to the rotation of the output shaft.
Or what has a flywheel function may be used for the gears for maintaining rotation of an output shaft.
Of course, it may have a flywheel on the opposite side of the output shaft, and for example, the flywheel may use a gear flywheel.
This imparts uniform rotation.

FIG. 2 is a diagram illustrating an example of a process of performing a compression explosion by meshing the blade portion 21 of the rotor A and the blade portion 21 of the rotor B, and is a diagram illustrating an example of the compression and explosion process of both shown in FIG. .
As shown in FIG. 2A, first, the blade A-2 of the rotor A and the blade B-1 of the rotor B are engaged with each other, and a compression explosion occurs in a gap portion between the base 20 of the rotor A.
Further, when the rotor 2 is rotated and the blades 21 are further rotated, the blade B-1 of the rotor B and the blade A-1 of the rotor A are engaged with each other as shown in this figure, and the distance between the two is reduced. Thus, a compression explosion occurs in a gap portion with the base 20 of the rotor B.

Next, as shown in FIG. 2B, when the rotor 2 is further rotated and both the blade portions 21 are rotated, the blade portion A-1 of the rotor A and the blade portion B-6 of the rotor B are engaged, Further, the compression is caused by the narrowing of the distance between the two due to the rotation, and the compression explosion occurs in the gap portion with the base 20 of the rotor A.
Further, as shown in FIG. 2 (c), when the rotor 2 is rotated and both the blade portions 21 are rotated, the blade portion B-6 of the rotor B and the blade portion A-6 of the rotor A are engaged with each other. When the distance between the two is narrowed, the air is compressed, and a compression explosion occurs in a gap between the rotor B and the base 20.
Since explosions are continuously generated in this way, extremely high output can be obtained and efficient combustion can be performed.

Furthermore, although continuous combustion is given, a high-pressure air-fuel mixture is forcibly sent by a turbine or the like at the time of intake air, so that smoother and higher rotation can be maintained.
The shape of the rotor base 20 and blade 21 in FIGS. 1 and 2 is a conceptual diagram of the state of rotation. For example, even in the shape as shown in these figures, FIG. 5. As shown in FIG. 8, the base of the blade, which is a continuous portion of the rotor blade and the rotor base, is formed by a concave arcuate shape with the curved shape of the base of the blade. As a matter of course, the tip of one blade portion may be configured to have a shape that can be smoothly rotated in a state in which the interval between the base portions of the other blade portions is narrowed with rotation.

FIG. 3 shows an example of an airflow plate 3 for generating turbulent airflow during intake.
As shown in the airflow plate 3 in this figure, by forming a substantially wave-shaped cross section, it is possible to generate turbulent airflow in the intake pipe and increase the mixing efficiency.
As described above, the present invention can perform intake, compression, explosion, and exhaust with high efficiency.
In addition, instead of the rotor 2 having the six blade portions 21 shown above, a rotor having another number of blade portions may be used, and an arbitrary number of at least about 5 to 12 sheets may be used. The rotor 2 having a plurality of blade portions 21 may be used, or if the blade portion 21 is of a substantially gear-shaped form with a small protrusion, a rotor having more than 12 blade portions 21 may be used. The rotor 2 having such a configuration may be used.

However, it is necessary that the two rotors are used so that the respective blade portions are engaged with each other, and the blade portions are capable of compression explosion.
Therefore, the two rotors 2 basically have the same number and the same shape of blades, but the present invention is not limited to this, and a rotor having a different number of blades enabling this meshing configuration or a deformed rotor is used. You can rely on things.
In order to place the two rotors firmly in the casing and maintain airtightness, for example, a gear that has gears on the output shaft of the rotor and the gears of the rotors may be used.
For example, a weight may be provided in the outer peripheral direction of the engagement gear, and smooth rotation may be achieved by utilizing the inertia of the rotation when the gear is rotated.

FIG. 4 is a diagram showing a configuration of an example of a rotor that further increases the rotation efficiency and exhibits the cooling effect of the engine.
First, the side surface of the blade portion 21 of the rotor 2 has an oil conduction path 25 on its surface, and the lubricating oil is supplied to the oil conduction path 25 from the connecting portion 24 of the oil reservoir.
As a result, it is possible to improve adhesion and smooth rotation.
In particular, lubricating oil is supplied from the casing side, but with the rotation of the blade part, the centrifugal force and capillary action fill the gap between the blade part and the casing.

Further, when it reaches between the blade parts, it is discharged from the exhaust parts O1 and O2 together with the exhaust gas, for example, and the oil is further supplied to the oil reservoir for the oil pan and repeatedly supplied.
Therefore, each blade portion 21 further includes an oil conduction path 25 and a connecting portion 24 for supplying oil.
In this case, the casing 1 of the connecting portion 24 has a supply portion for supplying oil, and may be provided on both sides in addition to the one provided on one side.
For example, you may use what penetrates the inside of a blade | wing part and supplies from an other side.

That is, an oil pan may be provided on one casing side surface, and oil may be supplied to both sides of the rotor therefrom.
Further, the rotor 2 has a cooling water passage 27 for cooling the rotor, and also has a cooling water inlet 28 and a cooling water outlet 29.
The rotor 2 is exposed to a high temperature, and cooling water can be used to cool the rotor 2.
When the cooling water is supplied to the cooling water intake port 28, the cooling water is pulled up in the direction of the tip of the rotor by the centrifugal force accompanying the rotation of the rotor 2.

Further, when the rotation of the rotor 2 continues, cooling water is sequentially supplied and circulates in the cooling water conduction path 27.
In this case, the cooling water is discharged from the cooling water take-out port 29, cools the cooling water that has reached a higher temperature, and supplies the cooled cooling water from the cooling water intake port 28.
For example, the circulation may be forcibly supplied together with the centrifugal force using, for example, a turbine or a supply member, that is, the circulation may be used in addition to or instead of the centrifugal force.

FIG. 5 is a view showing an example of the oil conduction path 25 of the rotor, and has an oil conduction path 25 for supplying lubricating oil from the rotor base 20 toward the distal end on the casing side surface of the rotor 2.
This is provided on both sides of the blade portion 21 of the rotor 2. As an example, an example in which the inside of the rotor base is connected by a connecting portion 24 and oil is supplied in both directions is shown.
Of course, the connecting portion 24 may be configured to communicate with the inside of the rotor, or may have an oil supply portion on both sides to supply oil from an oil reservoir or the like, and supply oil to both sides of the rotor. Each may have a part.
You may use what has only one side as needed.

FIG. 6 is a diagram illustrating an example in which the oil supply unit 15 is provided in the vicinity of the shaft portion 4 of the rotor and the oil is supplied through the connecting portion 24.
In addition, it is a figure shown as a conceptual diagram of the grade which can understand easily that an oil supply part is required instead of a specific supply state.
Accordingly, any configuration that allows the most efficient and effective oil circulation can be used.

FIG. 7 is a diagram illustrating an example of the cooling water intake port 28 and the cooling water outlet port 29 of the blade portion 21 of the rotor 2 and the cooling water conduction path 27 configured in the blade portion 21.
With the configuration as shown in this figure, the cooling water circulates inside the rotor 2, and the rotor can be cooled.
Note that the configuration shown in the figure is an example, and other configurations may of course be used.

FIG. 8 is a diagram showing an example of the cooling water conduction path 27, and the cooling water is supplied from the cooling water intake port 28 of the rotor through the inside of the shaft portion 4 of the rotor, which is first the center of the blade portion 21 of the rotor 2. The cooling water conduction path 27 that passes through the portion leads to the tip of the blade portion 21, further branches in both directions, and further returns to the rotor base 20 direction through the cooling water conduction path 27.
Further, the cooling water conducting paths 27 branched in both directions are guided in both directions in the direction of the rotor base, respectively, and are guided in the directions of the cooling water outlets 29 on both sides, respectively. Discharge.
In this case, various general cooling mechanisms for cooling the high-temperature cooling water are provided outside, and the cooled cooling water is led to the cooling water intake port.

FIG. 9 shows that the cooling water is taken in from the cooling water intake port 28, guided from the base 20 of the rotor 2 toward the tip of the blade portion 21 by the cooling water conduction path 27, and further guided toward the base 20 of the rotor 2. It is a figure which shows the other example taken out from the cooling-water taking-out opening 29 by.
Also in this case, the rotor 2 is cooled using the cooling water, and the taken-up high-temperature cooling water is cooled and returned to the inside of the rotor 2 so that the inside of the rotor 2 is appropriately cooled by the cooling water.

Incidentally, the cooling water in the present invention may be either one using cooling air or one using cooling oil. Regarding the configuration using these, the cooling water is used. Cooling water passage, cooling water outlet, and cooling water inlet are all cooling air passage, cooling air outlet, cooling air inlet, cooling oil passage, cooling oil outlet, cooling A cooling air or a cooling oil may be used as the oil intake for the vehicle.

DESCRIPTION OF SYMBOLS 1 Casing 15 Oil supply part 2 Rotor 20 Base 21 Blade | blade part 24 Connection part 25 Oil conduction path 27 Cooling water conduction path 28 Cooling water intake port 29 Cooling water take-out port 3 Airflow plate 4 Shaft part I Intake part O1 Primary exhaust part O2 Two Next exhaust part

Claims

Two rotating rotors A and B each having at least five blade parts 21 each having an involute curve in the casing 1, and the blade parts on the extension of the respective blade parts 21 of the rotor A and rotor B Consisting of a casing having an inner diameter along the rotation of 21;
The two rotors A and B are arranged in the casing 1 so that the blades 21 are engaged with each other, and the blades 21 of the two rotors A and B are rotated and the blades 21 and the rotor base 20 are rotated. By compressing the vaporized fuel between the two and the rotor base 20 in the direction of the explosion,
As the rotor A and the rotor B are engaged with each other and rotated, a compression explosion is performed by the blade portion of the rotor A and the blade portion of the rotor B in the base portion direction of the rotor A, and then the rotation of the rotor causes the base portion of the rotor B to rotate. A rotary engine that performs compression explosion by the blade portion of the rotor B and the blade portion of the rotor A, and performs compression explosion by repeating the compression explosion alternately in the direction of the rotor base 20 respectively.
It is a rotary engine that sequentially performs intake by the rotation of the rotor by one rotation of the rotor, compression between the blade parts and the rotor base, explosion in the direction of the rotor base, exhaust accompanying the passage of the exhaust part, passage of the exhaust part,
Further, the rotary engine is characterized in that intake air from the intake portion is forcibly performed by rotating a turbine using exhaust from the exhaust portion.
The rotary engine according to claim 1, comprising two rotors, rotor A and rotor B, each having six blade portions 21 each having an involute curve.
The rotary engine according to claim 1, wherein both the rotor A and the rotor B are rotors 2 having the same number of blade portions 21.
The casing 1 has an intake part I and an exhaust part O, and the exhaust part O has a primary exhaust part O1 and a secondary exhaust part O2, and compression, explosion, primary exhaust, secondary exhaust, The rotary engine according to any one of claims 1 to 3, wherein the intake is performed in one rotation.
The rotary engine according to any one of claims 1 to 4, wherein an airflow plate (3) is arranged in the intake portion (O) to generate turbulent airflow in the intake portion (O), thereby improving the mixing efficiency of air and fuel.
The rotary engine according to any one of claims 1 to 5, wherein the rotor (2) has an oil conduction path (25) and guides oil to the surface of the rotor (2).
The rotary engine according to claim 6, wherein the oil conduction path 25 is provided on a side surface of the blade portion 21 of the rotor 2 toward the tip of the blade portion 21 from the rotor base 20.
A cooling water conduction path 27 is provided inside the blade part 21 of the rotor 2 from the rotor base 20 toward the tip of the blade part 21, and the cooling water passes through the conduction path 27, thereby the rotor 2. The rotary engine according to claim 1, wherein the rotary engine is cooled.
The cooling water is supplied from the cooling water intake port 28 through the shaft portion 4 of the rotor 2 and passes through the cooling water conduction path 27 that guides the inside of the blade portion 21 of the rotor 2 to the tip portion of the blade portion 21 from the rotor base 20. Further, the cooling water is led from the tip part toward the rotor base part 20 by the cooling conduction path 27, and the cooling water is led out from the inside of the rotor through the cooling water outlet 29, thereby cooling the rotor. Item 9. The rotary engine according to Item 8.
The rotary engine according to claim 8, wherein cooling air is used in place of the cooling water.
The rotary engine according to claim 8, wherein cooling oil is used in place of the cooling water.
The rotary engine according to any one of claims 1 to 11, further comprising a flywheel, wherein the flywheel is rotated by the rotational power of the rotor.