Straight shaft and piston rotary type internal combustion engine

Abstract

The invention discloses a straight shaft and piston rotary type internal combustion engine which comprises a straight shaft, a pressure suction cylinder and a power exhaust cylinder, the pressure suction cylinder is in an annular shape, and an inner cavity of the pressure suction cylinder is hollow; a pressure suction cylinder isolating valve is arranged in an inner cavity of the pressure suction cylinder. Pressure suction cylinder pistons are arranged in the pressure suction cylinder working cavities, and a pressure suction cylinder connecting rod is connected between the pressure suction cylinder pistons in the two pressure suction cylinder working cavities; a pressure suction cylinder air inlet and a pressure suction cylinder air outlet are formed in the two sides of the pressure suction cylinder isolating valve in the pressure suction cylinder working cavity; the pressure suction cylinder and the power exhaust cylinder are arranged side by side in the axis direction of the straight shaft. The power exhaust cylinder is annular, and an inner cavity of the power exhaust cylinder is hollow; a power exhaust cylinder isolating valve is arranged in an inner cavity of the power exhaust cylinder; power exhaust cylinder pistons are arranged in the power exhaust cylinder working cavities, and a power exhaust cylinder connecting rod is connected between the power exhaust cylinder pistons of the two power exhaust cylinder working cavities; a power exhaust cylinder air inlet and a power exhaust cylinder air outlet are formed in the power exhaust cylinder working cavity; the power exhaust cylinder air inlet is close to the power exhaust cylinder isolating valve, and an ignition device is arranged at the position, close to the power exhaust cylinder air inlet, in the power exhaust cylinder working cavity. The internal combustion engine is simple in structure and high in energy conversion efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of internal combustion engines, and more particularly to a straight-shaft, piston rotary internal combustion engine. Background Art

[0002] The traditional internal combustion engine is composed of a crankshaft connecting rod mechanism, and its working principle is to convert the reciprocating linear motion of the piston in the cylinder into the rotational motion of the crankshaft, and then output the power through the crank. The transmission internal combustion engine has the following disadvantages when in use: 1. Due to the limitation of the crank, the piston has a short stroke, and the crank rotates twice before the piston does work once. After doing work, the combustion gas in the cylinder still has a high energy to be discharged from the cylinder, which will cause energy waste, thereby reducing the energy conversion rate; 2. The piston and the connecting rod have a certain weight. When the piston and the connecting rod are doing reciprocating motion, a large part of the force transmitted to the hinge point along the connecting rod is radial force, which cannot drive the main shaft to work, but will cause additional wear on the crankshaft bearing and the cylinder wall; 3. Since the complex exhaust mechanism consumes energy when working, the thermal efficiency of the internal combustion engine will be low; 4. Due to the complex structure of the overall internal combustion engine, the manufacturing cost is high, the maintenance is difficult, the internal combustion engine is not fully burned, and the exhaust gas will also pollute the environment.

[0003] Therefore, developing a straight-shaft, piston rotary internal combustion engine with a simple structure and high energy conversion efficiency is an urgent problem to be solved by those skilled in the art. Summary of the invention

[0004] In view of this, the present invention provides a straight-shaft, piston rotary internal combustion engine with a simple structure and high energy conversion efficiency.

[0005] In order to achieve the above object, the present invention adopts the following technical solution:

[0006] A straight-shaft, piston rotary internal combustion engine comprising:

[0007] Straight shaft,

[0008] Suction and pressure cylinder, the suction and pressure cylinder is in a ring shape, and the inner cavity is hollow; a suction and pressure cylinder is provided in the inner cavity of the suction and pressure cylinder, and two suction and pressure cylinder isolating valves divide the inner cavity of the suction and pressure cylinder into two suction and pressure cylinder working chambers; a suction and pressure cylinder piston is provided in the suction and pressure cylinder working chamber, and a suction and pressure cylinder connecting rod is connected between the suction and pressure cylinder pistons in the two suction and pressure cylinder working chambers, and the middle part of the suction and pressure cylinder connecting rod is sleeved on the outside of the straight shaft; the rotation of the suction and pressure cylinder connecting rod drives the suction and pressure cylinder piston to rotate in the suction and pressure cylinder working chamber; a suction and pressure cylinder air inlet and a suction and pressure cylinder exhaust port are provided on both sides of the suction and pressure cylinder isolating valve in the suction and pressure cylinder working chamber; according to the increase of the power of the internal combustion engine, the suction and pressure cylinder, the suction and pressure cylinder isolating valve, the suction and pressure cylinder working chamber, the suction and pressure cylinder piston and the suction and pressure cylinder connecting rod are correspondingly increased or enlarged;

[0009] A work cylinder, wherein the suction and pressure cylinder and the work cylinder are arranged side by side along the axial direction of the straight shaft; the work cylinder is in a ring shape, and the inner cavity is hollow; a work cylinder isolating valve is arranged in the inner cavity of the work cylinder, and two work cylinder isolating valves divide the inner cavity of the work cylinder into two work cylinder working chambers; a work cylinder piston is arranged in the work cylinder working chamber, and a work cylinder connecting rod is connected between the work cylinder pistons of the two work cylinder working chambers, and the middle part of the work cylinder connecting rod is sleeved on the outside of the straight shaft; the rotation of the work cylinder connecting rod drives the work cylinder piston to rotate in the work cylinder working chamber; the work cylinder working chamber A power cylinder air inlet and a power cylinder exhaust port are arranged in the cavity; the power cylinder air inlet is close to the power cylinder isolating valve, and an ignition device is arranged at a position close to the power cylinder air inlet in the power cylinder working cavity; the suction and pressure cylinder exhaust port is connected with the power cylinder air inlet, and a compression valve is arranged at the connecting passage; the compression valve is in a closed state before the power cylinder piston passes through the power cylinder isolating valve, and opens to intake air after the power cylinder piston passes through the power cylinder isolating valve; according to the increase of the power of the internal combustion engine, the power cylinder, the power cylinder isolating valve, the power cylinder working cavity, the power cylinder piston and the power cylinder connecting rod are increased or enlarged accordingly.

[0010] The beneficial effect of adopting the above technical solution is that a straight shaft is used instead of a crankshaft in the present invention, and the suction and pressure cylinder can realize the suction process without a valve mechanism under the drive of the straight shaft. The suction and pressure cylinder inhales and compresses the gas in the cavity, and then discharges the gas into the power cylinder, injects fuel for ignition, and the high-temperature gas generated by combustion drives the power cylinder piston and connecting rod to rotate, while driving the straight shaft to rotate and output power to the outside.

[0011] Preferably, the suction-pressure cylinder piston divides the suction-pressure cylinder working chamber into a suction-pressure cylinder front chamber and a suction-pressure cylinder rear chamber; the suction-pressure cylinder air inlet is arranged in the suction-pressure cylinder rear chamber, and the suction-pressure cylinder exhaust port is arranged in the suction-pressure cylinder front chamber. When the straight shaft rotates clockwise, it drives the suction-pressure cylinder connecting rod to rotate, and at the same time, the suction-pressure cylinder piston rotates in the suction-pressure cylinder working chamber. During the rotation process, the gas in the suction-pressure cylinder front chamber is continuously compressed, and the rear end of the suction-pressure cylinder continuously takes in air through the suction-pressure cylinder air inlet.

[0012] Preferably, the power cylinder piston divides the power cylinder working chamber into a power cylinder front chamber and a power cylinder rear chamber; the power cylinder air inlet and the ignition device are arranged in the power cylinder rear chamber, and the power cylinder exhaust port is arranged in the power cylinder front chamber. When the straight shaft rotates clockwise, it will push the power cylinder connecting rod to rotate, and at the same time, the power cylinder piston rotates in the power cylinder working chamber, and the compressed air in the suction and pressure cylinder front chamber will enter the power cylinder rear chamber and ignite through the ignition device, and the high-temperature gas will also drive the power cylinder piston to rotate, and the gas at the front end of the power cylinder will be discharged through the power cylinder outlet.

[0013] Preferably, the surface of the straight shaft is provided with a keyway or a gear ring for connecting with the suction and pressure cylinder connecting rod and the power discharge cylinder connecting rod, and the ends of the suction and pressure cylinder connecting rod and the power discharge cylinder connecting rod are provided with connecting keys or gear seats matching with the straight shaft; the end of the straight shaft is provided with a flywheel connecting plate for power output; according to the increase of the power of the internal combustion engine, the keyway or gear ring on the surface of the straight shaft connected with the suction and pressure cylinder connecting rod and the power discharge cylinder connecting rod will increase accordingly.

[0014] Preferably, a suction-pressure cylinder slot is provided at a position corresponding to the suction-pressure cylinder side wall and the suction-pressure cylinder connecting rod, and the suction-pressure cylinder slot is arranged in a ring shape along the inner ring of the suction-pressure cylinder; the suction-pressure cylinder connecting rod passes through the suction-pressure cylinder slot. The setting of the suction-pressure cylinder slot facilitates the suction-pressure cylinder connecting rod to drive the suction-pressure cylinder piston to circulate and rotate in the suction-pressure cylinder.

[0015] Preferably, a suction-pressure cylinder sealing part is provided at a position corresponding to the inner cavity of the suction-pressure cylinder and the suction-pressure cylinder slideway, and the suction-pressure cylinder sealing part is sealed and connected to the suction-pressure cylinder slideway; the suction-pressure cylinder connecting rod passes through the suction-pressure cylinder slideway and is connected to the suction-pressure cylinder sealing part. The suction-pressure cylinder sealing part can ensure the sealing of the inner cavity of the suction-pressure cylinder during the rotation of the suction-pressure cylinder connecting rod.

[0016] Preferably, the suction and pressure cylinder piston is in an arc shape matching the inner cavity of the suction and pressure cylinder; both ends of the suction and pressure cylinder piston are working surfaces, and the side walls of the working surfaces are provided with suction and pressure cylinder air rings and suction and pressure cylinder oil rings. The provision of the suction and pressure cylinder air ring can seal the suction and pressure cylinder piston and the inner wall of the suction and pressure cylinder; the suction and pressure cylinder oil ring can scrape off the residual lubricating oil on the inner wall of the suction and pressure cylinder.

[0017] Preferably, a work cylinder slide groove is provided at a position corresponding to the work cylinder connecting rod and the work cylinder side wall, and the work cylinder slide groove is arranged in a ring shape along the inner ring of the work cylinder; the work cylinder connecting rod passes through the work cylinder slide groove. The setting of the work cylinder slide groove facilitates the work cylinder connecting rod to drive the work cylinder piston to circulate and rotate in the work cylinder.

[0018] Preferably, a power cylinder sealing part is provided at a position corresponding to the inner cavity of the power cylinder and the power cylinder slideway, and the power cylinder sealing part is sealed and connected to the power cylinder slideway; the power cylinder connecting rod passes through the power cylinder slideway and is connected to the power cylinder sealing part. The power cylinder sealing part can ensure the sealing of the inner cavity of the power cylinder during the rotation of the power cylinder connecting rod.

[0019] Preferably, the power cylinder piston is in an arc shape matching the inner cavity of the power cylinder; both ends of the power cylinder piston are working surfaces, and the side walls of the working surfaces are provided with a power cylinder gas ring and a power cylinder oil ring. The setting of the power cylinder gas ring can seal the power cylinder piston and the inner wall of the power cylinder; the power cylinder oil ring can scrape off the residual lubricating oil on the inner wall of the power cylinder.

[0020] It can be seen from the above technical solutions that, compared with the prior art, the present invention discloses a straight-shaft, piston rotary internal combustion engine, which has the following beneficial effects:

[0021] (1) The present invention uses a straight shaft instead of a crankshaft, which reduces the power consumption of a piston connecting rod with a certain weight when it reciprocates. The internal combustion engine of the present invention has a simple structure and light weight, and eliminates the valve mechanism, which reduces the energy consumption caused by the valve mechanism, saves energy, and improves the power output of the internal combustion engine;

[0022] (2) The working chambers of the suction and pressure cylinder and the power cylinder have large volumes and the piston has a long travel distance, which allows the fuel to be fully burned in the power cylinder, reduces the emission of harmful gases, and improves the energy conversion efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0024] Figure 1 A schematic diagram of the structure of an internal combustion engine provided by the present invention;

[0025] Figure 2 An internal cross-sectional view of an internal combustion engine provided by the present invention;

[0026] Figure 3 The present invention provides Figure 2 Sectional view at AA in the middle;

[0027] Figure 4 The present invention provides Figure 2 Sectional view at the middle BB;

[0028] Figure 5 The present invention provides Figure 2 Sectional view at CC;

[0029] Figure 6 The present invention provides Figure 2 Sectional view at DD in the middle;

[0030] Figure 7 This is a schematic structural diagram of the straight shaft provided by the present invention.

[0031] Among them, in the figure,

[0032] 1- straight axis;

[0033] 11-flywheel connecting plate; 12-keyway;

[0034] 2-Suction and pressure cylinder;

[0035] 21-suction and pressure cylinder isolating valve; 22-suction and pressure cylinder working chamber; 23-suction and pressure cylinder piston; 24-suction and pressure cylinder connecting rod; 25-suction and pressure cylinder air inlet; 26-suction and pressure cylinder exhaust port; 27-suction and pressure cylinder front chamber; 28-suction and pressure cylinder rear chamber; 29-suction and pressure cylinder slideway; 210-suction and pressure cylinder sealing part; 211-suction and pressure cylinder air ring; 212-suction and pressure cylinder oil ring;

[0036] 3-Power cylinder displacement;

[0037] 31-power cylinder isolating valve; 32-power cylinder working chamber; 33-power cylinder piston; 34-power cylinder connecting rod; 35-power cylinder air inlet; 36-power cylinder exhaust port; 37-ignition device; 38-power cylinder front chamber; 39-power cylinder rear chamber; 310-power cylinder slide groove; 311-power cylinder sealing part; 312-power cylinder gas ring; 313-power cylinder oil ring;

[0038] 4-Compression valve;

[0039] 41-Compression valve switch. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] The embodiment of the present invention discloses a straight-shaft, piston rotary internal combustion engine, comprising:

[0042] Straight axis 1,

[0043] Suction and pressure cylinder 2, the suction and pressure cylinder 2 is ring-shaped, and the inner cavity is hollow; a suction and pressure cylinder isolating valve 21 is arranged in the inner cavity of the suction and pressure cylinder 2, and two suction and pressure cylinder isolating valves 21 divide the inner cavity of the suction and pressure cylinder 2 into two suction and pressure cylinder working chambers 22; a suction and pressure cylinder piston 23 is arranged in the suction and pressure cylinder working chamber 22, and a suction and pressure cylinder connecting rod 24 is connected between the suction and pressure cylinder pistons 23 in the two suction and pressure cylinder working chambers 22, and the middle part of the suction and pressure cylinder connecting rod 24 is sleeved on the outside of the straight shaft 1; the rotation of the suction and pressure cylinder connecting rod 24 drives the suction and pressure cylinder piston 23 to rotate in the suction and pressure cylinder working chamber 22; a suction and pressure cylinder air inlet 25 and a suction and pressure cylinder exhaust port 26 are arranged on both sides of the suction and pressure cylinder isolating valve 21 in the suction and pressure cylinder working chamber 22; with the increase of the power of the internal combustion engine, the suction and pressure cylinder 2, the suction and pressure cylinder isolating valve 21, the suction and pressure cylinder working chamber 22, the suction and pressure cylinder piston 23 and the suction and pressure cylinder connecting rod 24 are correspondingly increased or enlarged;

[0044] The work cylinder 3, the suction and pressure cylinder 2 and the work cylinder 3 are arranged side by side along the axial direction of the straight shaft 1; the work cylinder 3 is ring-shaped, and the inner cavity is hollow; a work cylinder isolation valve 31 is arranged in the inner cavity of the work cylinder 3, and two work cylinder isolation valves 31 divide the inner cavity of the work cylinder 3 into two work cylinder working chambers 32; a work cylinder piston 33 is arranged in the work cylinder working chamber 32, and a work cylinder connecting rod 34 is connected between the work cylinder pistons 33 of the two work cylinder working chambers 32, and the middle part of the work cylinder connecting rod 34 is sleeved on the outside of the straight shaft 1; the rotation of the work cylinder connecting rod 34 drives the work cylinder piston 33 to rotate in the work cylinder working chamber 32; a work cylinder is arranged in the work cylinder working chamber 32 An air inlet 35 and a power cylinder exhaust port 36; the power cylinder air inlet 35 is close to the power cylinder isolating valve 31, and an ignition device 37 is provided at a position close to the power cylinder air inlet 35 in the power cylinder working chamber 32; the suction and pressure cylinder exhaust port 36 is connected to the power cylinder air inlet 35, and a compression valve 4 is provided at the connecting passage; the compression valve 4 is in a closed state before the power cylinder piston 33 passes through the power cylinder isolating valve 31, and is opened for air intake after the power cylinder piston 33 passes through the power cylinder isolating valve 31; according to the increase in the power of the internal combustion engine, the power cylinder 3, the power cylinder isolating valve 31, the power cylinder working chamber 32, the power cylinder piston 33 and the power cylinder connecting rod 34 are correspondingly increased or enlarged.

[0045] In order to further optimize the above technical solution, a compression valve switch is provided in the connecting passage between the suction and pressure cylinder exhaust port 36 and the work cylinder inlet port 35, near one end of the work cylinder inlet port 35. When the work cylinder piston 33 passes through the work cylinder isolating valve 31, the compression valve switch 41 controls the compression valve 4 to open. At other times, the compression valve switch 41 controls the compression valve 4 to be in a closed state.

[0046] In order to further optimize the above technical solution, the suction-pressure cylinder piston 23 divides the suction-pressure cylinder working chamber 22 into a suction-pressure cylinder front chamber 27 and a suction-pressure cylinder rear chamber 28; the suction-pressure cylinder air inlet 25 is arranged in the suction-pressure cylinder rear chamber 28, and the suction-pressure cylinder exhaust port 26 is arranged in the suction-pressure cylinder front chamber 27.

[0047] In order to further optimize the above technical solution, the power cylinder piston 33 divides the power cylinder working chamber 32 into a power cylinder front chamber 38 and a power cylinder rear chamber 39; the power cylinder air inlet 35 and the ignition device 37 are arranged in the power cylinder rear chamber 39, and the power cylinder exhaust port 36 is arranged in the power cylinder front chamber 38.

[0048] In order to further optimize the above technical solution, the surface of the straight shaft 1 is provided with a keyway 12 or a gear ring for connecting with the suction and pressure cylinder connecting rod 24 and the power discharge cylinder connecting rod 34, and the ends of the suction and pressure cylinder connecting rod 24 and the power discharge cylinder connecting rod 34 are provided with connecting keys or gear seats matching with the straight shaft 1; the end of the straight shaft 1 is provided with a flywheel connecting plate 11 for power output; according to the increase of the power of the internal combustion engine, the keyways or gear rings on the surface of the straight shaft connected with the suction and pressure cylinder connecting rod and the power discharge cylinder connecting rod will increase accordingly.

[0049] In order to further optimize the above technical solution, multiple groups of suction and pressure cylinder connecting rods 24 and power displacement cylinder connecting rods 34 can be connected in series on the straight shaft 1 according to the power requirements of the internal combustion engine.

[0050] In order to further optimize the above technical solution, the suction and pressure cylinder connecting rod 24 and the power cylinder connecting rod 34 are respectively connected to the suction and pressure cylinder piston 23 and the power cylinder piston 33 through a piston pin. The suction and pressure cylinder 2 can be changed in shape and size according to the power requirements of the internal combustion engine.

[0051] In order to further optimize the above technical solution, a suction and pressure cylinder groove 29 is opened at the position corresponding to the side wall of the suction and pressure cylinder 2 and the suction and pressure cylinder connecting rod 24. The suction and pressure cylinder groove 29 is arranged in a ring shape along the inner circle of the suction and pressure cylinder 2; the suction and pressure cylinder connecting rod 24 passes through the suction and pressure cylinder groove 29.

[0052] In order to further optimize the above technical solution, a suction-pressure cylinder sealing part 210 is provided at the corresponding position between the inner cavity of the suction-pressure cylinder 2 and the suction-pressure cylinder slide groove 29, and the suction-pressure cylinder sealing part 210 is sealed and connected to the suction-pressure cylinder slide groove 29; the suction-pressure cylinder connecting rod 24 passes through the suction-pressure cylinder slide groove 29 and is connected to the suction-pressure cylinder sealing part 210.

[0053] In order to further optimize the above technical solution, the suction and pressure cylinder piston 23 is in an arc shape matching the inner cavity of the suction and pressure cylinder 2; the two ends of the suction and pressure cylinder piston 23 are working surfaces, and the side walls of the working surfaces are provided with a suction and pressure cylinder gas ring 211 and a suction and pressure cylinder oil ring 212. The suction and pressure cylinder sealing part 210 and the power cylinder sealing part 311 are both annular, and the suction and pressure cylinder sealing part 210 and the power cylinder sealing part 311 will rotate synchronously with the suction and pressure cylinder connecting rod 24 and the power cylinder connecting rod 34.

[0054] In order to further optimize the above technical solution, a work cylinder slide groove 310 is opened at a position corresponding to the side wall of the work cylinder 3 and the work cylinder connecting rod 34, and the work cylinder slide groove 310 is arranged in a ring shape along the inner circle of the work cylinder 3; the work cylinder connecting rod 34 passes through the work cylinder slide groove 310.

[0055] In order to further optimize the above technical solution, a power cylinder sealing part 311 is provided at a position corresponding to the inner cavity of the power cylinder 3 and the power cylinder slide groove 310, and the power cylinder sealing part 311 is sealed and connected to the power cylinder slide groove 310; the power cylinder connecting rod 34 penetrates the power cylinder slide groove 310 and is connected to the power cylinder sealing part 311.

[0056] In order to further optimize the above technical solution, the work cylinder piston 33 is in an arc shape that matches the inner cavity of the work cylinder 3; both ends of the work cylinder piston 33 are working surfaces, and the side walls of the working surfaces are provided with a work cylinder air ring 312 and a work cylinder oil ring 313.

[0057] In order to further optimize the above technical solution, the suction and pressure cylinder isolation valve 21 and the work and discharge cylinder isolation valve 31 are one-way open valve bodies, which can only allow the suction and pressure cylinder piston 23 and the work and discharge cylinder piston 33 to pass through when they rotate clockwise. The suction and pressure cylinder isolation valve 21 and the work and discharge cylinder isolation valve 31 are provided with a reset spring. When the suction and pressure cylinder piston 23 and the work and discharge cylinder piston 33 pass through, the reset spring will drive the suction and pressure cylinder isolation valve 21 and the work and discharge cylinder isolation valve 31 to reset and close. The compressed air valve 4 can be opened by a mechanical structure, or it can be a solenoid valve controlled by an electrical signal, or it can be a pneumatic valve controlled by a pneumatic switch, as long as the corresponding function can be achieved, and only after the work and discharge cylinder piston 33 passes through the work and discharge cylinder isolation valve 31, the compressed air valve 4 will be opened, and the compressed air in the suction and pressure cylinder front chamber 27 quickly enters the work and discharge cylinder rear chamber 39 and closes.

[0058] Working principle:

[0059] In the initial state, the straight shaft 1 is driven to rotate by the driving motor. The rotation of the straight shaft 1 will drive the suction and pressure cylinder connecting rod 24 and the power cylinder connecting rod 34 to rotate. The suction and pressure cylinder connecting rod 24 rotates clockwise, which will drive the suction and pressure cylinder piston 23 to rotate in the suction and pressure cylinder working chamber 22. At this time, the front end working surface of the suction and pressure cylinder piston 23 gradually approaches the suction and pressure cylinder isolation valve 21, and the volume decreases. The gas in the suction and pressure cylinder front chamber 27 will be continuously compressed, and the volume in the suction and pressure cylinder rear chamber 28 will continue to increase, and the gas will be continuously sucked in through the suction and pressure cylinder air inlet 25. At the same time, At this time, the power cylinder connecting rod 34 rotates clockwise, and when the power cylinder piston 33 passes through the power cylinder isolation valve 31, the compression valve 4 opens, and the compressed gas in the suction and pressure cylinder front chamber 27 enters the power cylinder rear chamber 39 through the suction and pressure cylinder exhaust port 26, the compression valve 4, and the power cylinder inlet 35, and the compression valve 4 is closed. At this time, the ignition device 37 ignites, and combustion occurs in the power cylinder rear chamber 39, generating a large amount of high-temperature gas, which will push the power cylinder piston 33 to rotate clockwise, and the gas in the power cylinder front chamber 38 will be discharged from the power cylinder exhaust port 36. In the initial state, the drive motor will drive the straight shaft 1. When the suction and pressure cylinder connecting rod 24 and the power cylinder connecting rod 34 are running, the drive motor stops driving, and the ignition and combustion process in the power cylinder rear chamber 39 will push the power cylinder piston 33 to rotate, thereby driving the straight shaft 1 to rotate, and output power to the outside through the flywheel connecting plate 11 of the straight shaft 1.

[0060] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0061] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A straight-shaft, piston rotary internal combustion engine, characterized in that: include: Straight shaft, Suction and pressure cylinder, the suction and pressure cylinder is in a ring shape, and the inner cavity is hollow; a suction and pressure cylinder is provided in the inner cavity of the suction and pressure cylinder, and two suction and pressure cylinder isolating valves divide the inner cavity of the suction and pressure cylinder into two suction and pressure cylinder working chambers; a suction and pressure cylinder piston is provided in the suction and pressure cylinder working chamber, and a suction and pressure cylinder connecting rod is connected between the suction and pressure cylinder pistons in the two suction and pressure cylinder working chambers, and the middle part of the suction and pressure cylinder connecting rod is sleeved on the outside of the straight shaft; the rotation of the suction and pressure cylinder connecting rod drives the suction and pressure cylinder piston to rotate in the suction and pressure cylinder working chamber; a suction and pressure cylinder air inlet and a suction and pressure cylinder exhaust port are provided on both sides of the suction and pressure cylinder isolating valve in the suction and pressure cylinder working chamber; according to the increase of the power of the internal combustion engine, the suction and pressure cylinder, the suction and pressure cylinder isolating valve, the suction and pressure cylinder working chamber, the suction and pressure cylinder piston and the suction and pressure cylinder connecting rod are correspondingly increased or enlarged; A work cylinder, wherein the suction and pressure cylinder and the work cylinder are arranged side by side along the axial direction of the straight shaft; the work cylinder is in a ring shape, and the inner cavity is hollow; a work cylinder isolating valve is arranged in the inner cavity of the work cylinder, and two work cylinder isolating valves divide the inner cavity of the work cylinder into two work cylinder working chambers; a work cylinder piston is arranged in the work cylinder working chamber, and a work cylinder connecting rod is connected between the work cylinder pistons of the two work cylinder working chambers, and the middle part of the work cylinder connecting rod is sleeved on the outside of the straight shaft; the rotation of the work cylinder connecting rod drives the work cylinder piston to rotate in the work cylinder working chamber; the work cylinder working chamber A power cylinder air inlet and a power cylinder exhaust port are arranged in the cavity; the power cylinder air inlet is close to the power cylinder isolating valve, and an ignition device is arranged at a position close to the power cylinder air inlet in the power cylinder working cavity; the suction and pressure cylinder exhaust port is connected with the power cylinder air inlet, and a compression valve is arranged at the connecting passage; the compression valve is in a closed state before the power cylinder piston passes through the power cylinder isolating valve, and opens to intake air after the power cylinder piston passes through the power cylinder isolating valve; according to the increase of the power of the internal combustion engine, the power cylinder, the power cylinder isolating valve, the power cylinder working cavity, the power cylinder piston and the power cylinder connecting rod are increased or enlarged accordingly.

2. A straight-shaft, piston rotary internal combustion engine according to claim 1, characterized in that: The suction-pressure cylinder piston divides the suction-pressure cylinder working chamber into a suction-pressure cylinder front chamber and a suction-pressure cylinder rear chamber; the suction-pressure cylinder air inlet is arranged in the suction-pressure cylinder rear chamber, and the suction-pressure cylinder exhaust port is arranged in the suction-pressure cylinder front chamber.

3. A straight-shaft, piston rotary internal combustion engine according to claim 1, characterized in that: The power cylinder piston divides the power cylinder working chamber into a power cylinder front chamber and a power cylinder rear chamber; the power cylinder air inlet and ignition device are arranged in the power cylinder rear chamber, and the power cylinder exhaust port is arranged in the power cylinder front chamber.

4. A straight-shaft, piston rotary internal combustion engine according to claim 1, characterized in that: The surface of the straight shaft is provided with a keyway or a gear ring for connecting with the suction and pressure cylinder connecting rod and the power discharge cylinder connecting rod, and the ends of the suction and pressure cylinder connecting rod and the power discharge cylinder connecting rod are provided with connecting keys or gear seats matching with the straight shaft; the end of the straight shaft is provided with a flywheel connecting plate for power output; according to the increase of the power of the internal combustion engine, the keyway or gear ring connected with the suction and pressure cylinder connecting rod and the power discharge cylinder connecting rod on the surface of the straight shaft will increase accordingly.

5. A straight-shaft, piston rotary internal combustion engine according to claim 1, characterized in that: A suction and pressure cylinder slide groove is provided at a position corresponding to the suction and pressure cylinder side wall and the suction and pressure cylinder connecting rod. The suction and pressure cylinder slide groove is arranged in a ring shape along the inner circle of the suction and pressure cylinder; the suction and pressure cylinder connecting rod passes through the suction and pressure cylinder slide groove.

6. A straight-shaft, piston rotary internal combustion engine according to claim 5, characterized in that: A suction-pressure cylinder sealing part is arranged at the position corresponding to the inner cavity of the suction-pressure cylinder and the suction-pressure cylinder slideway, and the suction-pressure cylinder sealing part is sealingly connected to the suction-pressure cylinder slideway; the suction-pressure cylinder connecting rod passes through the suction-pressure cylinder slideway and is connected to the suction-pressure cylinder sealing part.

7. A straight-shaft, piston rotary internal combustion engine according to claim 6, characterized in that: The suction and pressure cylinder piston is in an arc shape matching the inner cavity of the suction and pressure cylinder; both ends of the suction and pressure cylinder piston are working surfaces, and the side walls of the working surfaces are both provided with a suction and pressure cylinder air ring and a suction and pressure cylinder oil ring.

8. A straight-shaft, piston rotary internal combustion engine according to claim 1, characterized in that: A power cylinder slide groove is provided at a position corresponding to the power cylinder connecting rod and the side wall of the power cylinder. The power cylinder slide groove is arranged in a ring shape along the inner circle of the power cylinder. The power cylinder connecting rod passes through the power cylinder slide groove.

9. A straight-shaft, piston rotary internal combustion engine according to claim 8, characterized in that: A power cylinder sealing part is provided at a position corresponding to the inner cavity of the power cylinder and the power cylinder slide groove, and the power cylinder sealing part is sealingly connected to the power cylinder slide groove; the power cylinder connecting rod penetrates the power cylinder slide groove and is connected to the power cylinder sealing part.

10. A straight-shaft, piston rotary internal combustion engine according to claim 9, characterized in that: The power cylinder piston is in an arc shape matching the inner cavity of the power cylinder; both ends of the power cylinder piston are working surfaces, and the side walls of the working surfaces are both provided with a power cylinder gas ring and a power cylinder oil ring.

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