Rotor engine

Abstract

The invention provides a rotor engine which comprises an output shaft and at least three air cylinder units, and each air cylinder unit comprises an air cylinder body, an air inlet valve, an air inlet, an air outlet, an isolation brake, a piston and a rotor; the air cylinder body is a hollow cylinder, and a through hole penetrating through the two end faces of the air cylinder body is formed in the air cylinder body in the axial direction of the air cylinder body. The rotor is arranged in the air cylinder body, and an annular working cavity is formed between the outer wall of the rotor and the inner side wall of the air cylinder body; an air inlet communicated with the working cavity is formed in the side wall of the air cylinder body, the air inlet door is formed in the outer side wall of the air cylinder body, and the air inlet door can open or block the air inlet so that the working cavity can be communicated with or closed from the outside; the three air cylinder units are stacked, and the output shaft sequentially penetrates through the through holes of the three air cylinder units and the open hole of the rotor. The pistons of the three air cylinder units are evenly distributed at intervals. The rotor engine provided by the invention solves the problem of low fuel efficiency caused by many useless strokes of the engine in the prior art.

Description

Technical Field

[0001] The invention belongs to the technical field of engines and relates to a rotary engine. Background Art

[0002] Traditional reciprocating piston engines are generally four-stroke engines, which use the piston to make reciprocating linear motion in the cylinder, and convert the linear motion of the piston into the rotation of the crankshaft through the crankshaft. The working process of a common four-stroke engine includes: intake stroke, the piston moves downward under the drive of the initial external force, at this time the intake valve opens, the exhaust valve closes, and the gas and fuel enter the cylinder; compression stroke, the intake valve closes, the piston moves upward, compressing the air and fuel in the cylinder; power stroke, the spark plug ignites the fuel in the cavity, the pressure in the cylinder rises sharply, pushing the piston downward, and the piston movement drives the crankshaft to rotate; exhaust stroke, the piston moves upward from the bottom, the exhaust valve opens, the exhaust gas in the cylinder is discharged, and then enters the next cycle. Among the four strokes of a four-stroke engine, only the power stroke is useful, and the other three strokes need to use the power of the inertial flywheel or other cylinders to drive the piston movement, which also limits the fuel efficiency of the four-stroke engine.

[0003] The rotary engine is different from the traditional reciprocating piston engine. It uses the rotation of the triangular rotor to control compression and discharge, and directly uses the rotation of the triangular rotor to drive the output shaft to rotate. The triangular rotor divides the cylinder into three independent spaces, and the three spaces complete the process of intake, compression, power and exhaust respectively. The triangular rotor rotates one circle, and the engine ignites and works three times. Similarly, in the working stroke of the traditional rotary engine, only the power stroke is useful, and the other three strokes are realized by the inertial rotation of the rotor. Summary of the invention

[0004] The object of the present invention is to provide a rotary engine, aiming to solve the problem of low fuel efficiency caused by many useless strokes of the engine in the prior art.

[0005] To solve the above technical problems, the present invention provides a rotary engine, comprising an output shaft and at least three cylinder units, each cylinder unit comprising: a cylinder body, an intake valve, an intake port, an exhaust port, an isolation gate, a piston and a rotor; the cylinder body is a hollow cylinder, and the cylinder body is provided with a through hole penetrating the two end faces of the cylinder body along its axial direction; the rotor is arranged in the cylinder body, and an annular working chamber is formed between the outer wall of the rotor and the inner wall of the cylinder body; an intake port connected to the working chamber is provided on the side wall of the cylinder body, and the intake valve is provided on the outer side wall of the cylinder body, and the intake valve can open or block the intake port to connect or close the working chamber to the outside; one end of the piston along the radial direction of the cylinder body is fixed to the outer wall of the rotor, and the other end is in sealing contact with the inner wall of the cylinder body, and the piston is arranged along the axial direction of the cylinder body. The two ends are in sealing contact with the two end faces of the cylinder body; the inner wall of the cylinder body is recessed inward near the air inlet to form a throat, one end of the isolation gate is rotatably arranged in the throat space, and the other end is free; the isolation gate is configured so that when the other end of the isolation gate is rotated to the first position, the other end of the isolation gate is located in the throat space; when the other end of the isolation gate is rotated to the second position, the other end of the isolation gate is in sealing contact with the outer side wall of the rotor, and the working chamber is divided into two spaces by the isolation gate and the piston; the side wall of the cylinder body is provided with the exhaust port for connecting the working chamber and the outside world; the rotor is provided with an opening corresponding to the through hole on the end face of the cylinder body; the three cylinder units are stacked, and the output shaft passes through the through holes of the three cylinder units and the opening of the rotor in sequence; the pistons of the three cylinder units are evenly spaced.

[0006] Furthermore, when the number of the cylinder units is 3, the pistons of the 3 cylinder units are evenly distributed at 120 degrees.

[0007] Furthermore, when the number of the cylinder units is 4, the pistons of the 4 cylinder units are evenly distributed at 90 degrees.

[0008] Furthermore, the exhaust port is arranged close to the air inlet.

[0009] Furthermore, the throat portion extends along the axial direction of the cylinder body to two end surfaces of the cylinder body, and the two ends of the isolation gate along the axial direction are in sealing contact with the two end surfaces of the cylinder body.

[0010] Furthermore, a portion of the space of the throat away from the inner wall of the rotor is recessed inward to form the air inlet.

[0011] Furthermore, the exhaust port is always open so that the working chamber is always connected to the outside.

[0012] Furthermore, the piston is vertically arranged on the rotor.

[0013] Furthermore, the output shaft is a linear shaft.

[0014] Compared with the prior art, the rotary engine provided by the present invention has the following advantages:

[0015] 1. The present invention uses the cooperation of more than three modules to make more than two modules work at the same time in most of the engine time, thus greatly improving the power output efficiency;

[0016] 2. The working stages of the rotary engine of the present invention only include three stages: intake-combustion and power generation-passing through the throat space. The rotor completes a working cycle when it rotates one circle, and the combustion and power generation stage occupies most of the time, which greatly improves the power output efficiency;

[0017] 3. The piston and rotor of the engine are part of the combustion chamber. The piston adopts a straight axis. The power generated by the combustion gas in the combustion chamber acts vertically on the piston, which can ensure that the piston can obtain the maximum torque at any time, drive the rotor to rotate, and greatly improve the power output efficiency and fuel efficiency;

[0018] 4. During the operation of the engine of the present invention, the power generated by combustion is basically applied to the piston, and the friction loss is very small, which greatly improves the fuel efficiency, and the fuel efficiency can reach more than 60%;

[0019] 5. The engine of the present invention has a simple and reliable structure, low wear and tear, greatly improved system reliability and stability, and reduced maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic cross-sectional structure diagram of a rotary engine provided by an embodiment of the present invention;

[0021] Figure 2 It is a schematic diagram of the side structure of a rotary engine provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0022] The following is a further detailed description of a rotary engine proposed by the present invention in conjunction with the accompanying drawings and specific embodiments. The advantages and features of the present invention will become more apparent from the following description and claims. It should be noted that the accompanying drawings are in a very simplified form and are not in precise proportions, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention.

[0023] like Figure 1As shown, the present invention provides a rotary engine, including an output shaft 6 and at least 3 cylinder units, each cylinder unit includes: a cylinder body 4, an intake valve (not shown in the figure), an intake port 1, an exhaust port 7, an isolation gate 2, a piston 3 and a rotor 5; the cylinder body 4 is a hollow cylinder, and the cylinder body 4 is provided with a through hole penetrating the two end faces of the cylinder body 4 along its axial direction; the rotor 5 is arranged in the cylinder body 4, and an annular working chamber is formed between the outer wall of the rotor 5 and the inner side wall of the cylinder body 4; the side wall of the cylinder body 4 is provided with an intake port 1 connected to the working chamber, the intake valve is provided on the outer side wall of the cylinder body 4, and the intake valve can open or block the intake port 1 to connect or close the working chamber with the outside; one end of the piston 3 along the radial direction of the cylinder body 4 is fixed to the outer wall of the rotor 5, and the other end is in sealing contact with the inner side wall of the cylinder body 4, and the piston 3 is arranged along the radial direction of the cylinder body 4. 4, the two axial ends are in sealing contact with the two end faces of the cylinder body 4; the inner side wall of the cylinder body 4 is concave inward near the air inlet 1 to form a throat 8, one end of the isolation gate 2 is rotatably arranged in the throat space, and the other end is free; the isolation gate 2 is configured so that when the other end of the isolation gate 2 is rotated to the first position, the other end of the isolation gate 2 is located in the throat space; when the other end of the isolation gate 2 is rotated to the second position, the other end of the isolation gate 2 is in sealing contact with the outer side wall of the rotor 5, and the working chamber is divided into two spaces by the isolation gate 2 and the piston 3; the side wall of the cylinder body 4 is provided with the exhaust port 7 for connecting the working chamber with the outside; the rotor 5 is provided with an opening corresponding to the through hole on the end face of the cylinder body 4; the three cylinder units are stacked, and the output shaft 6 passes through the through holes of the three cylinder units and the opening of the rotor 5 in sequence; the pistons of the three cylinder units are evenly spaced.

[0024] Preferably, the number of the cylinder units is 3, and the pistons of the 3 cylinder units are evenly distributed at 120 degrees. Of course, the number of the cylinder units of the present invention can also be 4, and the pistons of the 4 cylinder units are evenly distributed at 90 degrees.

[0025] Furthermore, the exhaust port 7 is arranged close to the air inlet 1 .

[0026] Furthermore, the throat portion 8 extends along the axial direction of the cylinder body 4 to the two end surfaces of the cylinder body 4 , and the two ends of the isolation gate 2 along the axial direction are in sealing contact with the two end surfaces of the cylinder body 4 .

[0027] Furthermore, a portion of the space of the throat portion 8 away from the inner wall of the rotor 5 is recessed inward to form the air inlet 1 .

[0028] Furthermore, the exhaust port 7 is always open so that the working chamber is always connected with the outside.

[0029] Furthermore, the piston 5 may adopt a straight axis and be vertically arranged on the rotor.

[0030] The working process of the rotary engine of the present invention is described below by taking three cylinder units as an example.

[0031] For the convenience of introduction, the three cylinder units are named module I, module II and module III respectively. The rotors of the three cylinder units are evenly distributed at 120 degrees, corresponding to Figure 1 The position of the rotor 5 can be monitored by a position sensor or the like to conveniently know the position of the rotor. Both the intake valve and the isolation gate 2 can be controlled by a timing belt driven by a shaft to ensure precise opening / closing time, thereby matching the rotation of the rotor 5.

[0032] Taking the counterclockwise rotation of the rotor as an example, at the initial moment, the rotor 5 of the three cylinder units rotates driven by the initial external force. When the piston 3 of the module I rotates to the A position, the isolation gate 2 starts to rotate from the first position to the second position, that is, the isolation gate 2 is ready to close, and the intake valve is ready to open. After the piston 3 rotates a short distance, the isolation gate 2 opens to the second position, and the intake valve and the fuel valve are both opened. At this time, the space between the isolation gate 2, the air inlet 1, and the piston 3 forms the first space, and the space between the piston 3, the exhaust port 7 and the isolation gate 2 forms the second space. Fresh air and fuel fill the first space. This stage is the intake stage of the module I.

[0033] When the piston 3 of module I rotates to position B, the intake valve is closed, and the first space forms a closed space, which is filled with fresh space and fuel. At this time, the spark plug ignites, the fuel burns, and the pressure in the first space rises rapidly. Since the cylinder body 4 and the isolation gate 2 have no deformation or movement, and the rotor 5 does not have radial movement and deformation, the sharply rising pressure in the first space can only push the piston 3 to rotate counterclockwise, thereby driving the rotor 5 to rotate and drive the output shaft 6 to rotate and perform external work. This is the combustion and work stage of module I. At the same time, when the piston 3 of module I rotates to position B, the piston 3 of module II will rotate to position A and repeat the intake stage action.

[0034] When the piston 3 of module I rotates to the C position, the piston 3 of module II will rotate to the B position, repeating the action of the power stage; and the piston 4 of module III will rotate to the A position, repeating the action of the intake stage.

[0035] When the piston 3 of module I rotates to the D position, the isolation gate 2 starts to rotate from the second position to the first position, that is, the isolation gate 2 is opened to facilitate the piston 3 to rotate to the A position through the throat 8 without obstruction to start the next cycle.

[0036] During the entire working process, the exhaust port 7 is always open, that is, the second space is always connected to the outside world to remove the exhaust gas generated by the previous cycle of combustion. For a single module, there will only be three stages: intake-combustion and work-passing through the throat space. The rotor rotates one circle, that is, a working cycle is completed. Moreover, the piston is basically in the stage of combustion and work from position B to position D, that is, during the process of the rotor rotating one circle, more than half of the time is spent on external work, which greatly improves fuel efficiency.

[0037] Moreover, the mutual cooperation of the three modules can ensure that after the engine is started, more than two modules can basically ensure that most of the time are working simultaneously, greatly improving the power output efficiency.

[0038] It can be understood by those skilled in the art that when the number of cylinder units is 4 or more, the working principle of the rotary engine is similar to the above-mentioned 3-cylinder case, and the present invention will not be elaborated here.

[0039] The rotary engine provided by the present invention has the following advantages:

[0040] 1. The present invention uses the cooperation of more than three modules to make more than two modules work at the same time in most of the engine time, thus greatly improving the power output efficiency;

[0041] 2. The working stages of the rotary engine of the present invention only include three stages: intake-combustion and power generation-passing through the throat space. The rotor completes a working cycle when it rotates one circle, and the combustion and power generation stage occupies most of the time, which greatly improves the power output efficiency;

[0042] 3. The piston and rotor of the engine are part of the combustion chamber. The piston adopts a straight axis. The power generated by the combustion gas in the combustion chamber acts vertically on the piston. In this way, at any time and any position, the force is perpendicular to the maximum lever arm to obtain the maximum torque. This can ensure that the piston can obtain the maximum torque at any time, drive the rotor to rotate, and greatly improve the power output efficiency and fuel efficiency;

[0043] 4. During the operation of the engine of the present invention, the power generated by combustion is basically applied to the piston, and the friction loss is very small, which greatly improves the fuel efficiency, and the fuel efficiency can reach more than 60%;

[0044] 5. The engine of the present invention has a simple and reliable structure, low wear and tear, greatly improved system reliability and stability, and reduced maintenance costs.

[0045] The above description is only a description of the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention. Any changes or modifications made by a person skilled in the art in the field of the present invention based on the above disclosure shall fall within the scope of protection of the claims.

Claims

1. A rotary engine, characterized in that: It includes an output shaft and at least three cylinder units, each cylinder unit includes: a cylinder body, an intake valve, an intake port, an exhaust port, an isolation gate, a piston and a rotor; The cylinder body is a hollow cylinder, and a through hole penetrating through two end surfaces of the cylinder body is opened along the axial direction of the cylinder body; The rotor is arranged in the cylinder body, and an annular working chamber is formed between the outer wall of the rotor and the inner wall of the cylinder body; An air inlet connected to the working chamber is provided on the side wall of the cylinder body, and the air inlet valve is provided on the outer side wall of the cylinder body, and the air inlet valve can open or block the air inlet to connect or close the working chamber to the outside; One end of the piston along the radial direction of the cylinder body is fixed to the outer wall of the rotor, and the other end is in sealing contact with the inner wall of the cylinder body, and both ends of the piston along the axial direction of the cylinder body are in sealing contact with the two end surfaces of the cylinder body; The inner side wall of the cylinder body is concave inward near the air inlet to form a throat, one end of the isolation gate is rotatably arranged in the throat space, and the other end is free; The isolation gate is configured such that when the other end of the isolation gate rotates to a first position, the other end of the isolation gate is located in the throat space; when the other end of the isolation gate rotates to a second position, the other end of the isolation gate is in sealing contact with the outer side wall of the rotor, and the working chamber is divided into two spaces by the isolation gate and the piston; The side wall of the cylinder body is provided with the exhaust port for connecting the working chamber with the outside world; The rotor is provided with an opening corresponding to the through hole on the end surface of the cylinder body; The three cylinder units are stacked, and the output shaft passes through the through holes of the three cylinder units and the opening of the rotor in sequence; The pistons of the three cylinder units are evenly spaced.

2. A rotary engine according to claim 1, characterized in that: When the number of the cylinder units is 3, the pistons of the 3 cylinder units are evenly distributed at 120 degrees.

3. A rotary engine according to claim 1, characterized in that: When the number of the cylinder units is 4, the pistons of the 4 cylinder units are evenly distributed at 90 degrees.

4. A rotary engine according to claim 1, characterized in that: The exhaust port is arranged close to the air inlet.

5. A rotary engine as claimed in claim 1, characterized in that: The throat portion extends along the axial direction of the cylinder body to the two end surfaces of the cylinder body, and the two ends of the isolation gate along the axial direction are in sealing contact with the two end surfaces of the cylinder body.

6. A rotary engine as claimed in claim 5, characterized in that: A portion of the space of the throat portion away from the inner wall of the rotor is recessed inward to form the air inlet.

7. A rotary engine as claimed in claim 1, characterized in that: The exhaust port is always open so that the working chamber is always connected with the outside.

8. A rotary engine as claimed in claim 1, characterized in that: The piston is vertically arranged on the rotor.

9. A rotary engine as claimed in claim 1, characterized in that: The output shaft is a linear shaft.

Images