Compression ratio adjustable internal combustion engine

Abstract

The present invention relates to the technical field of internal combustion engines, and in particular to an internal combustion engine with adjustable compression ratio, comprising an internal combustion engine shell, wherein an active groove is provided at a position near the top of the internal casing of the internal combustion engine, an air inlet is provided at a position near the left rear on the inner surface of the active groove, an air outlet is provided at a position near the right rear on the inner surface of the active groove, an air inlet pipe is embedded and fixedly connected to the left outer surface of the internal combustion engine shell, and the air inlet pipe is interconnected with the air inlet. The device structure can not only more conveniently adjust the compression ratio of the internal combustion engine, so that the internal combustion engine can work normally within a suitable range of compression ratio, greatly improving the thermal efficiency of the internal combustion engine, but also can automatically filter, clean and collect carbon deposits and smoke generated by the internal combustion engine, so as to prevent smoke from accumulating in the outlet pipe and causing the exhaust pipe to be blocked, thereby greatly reducing the discharge of harmful gases and reducing damage to the environment.

Description

Technical Field

[0001] The invention relates to the technical field of internal combustion engines, and in particular to an internal combustion engine with adjustable compression ratio. Background Art

[0002] An internal combustion engine is a type of power machinery. It is a thermal engine that burns fuel inside the machine and converts the heat energy it releases directly into power. In a broad sense, internal combustion engines include not only reciprocating piston internal combustion engines, rotary piston engines and free piston engines, but also rotary impeller jet engines, but the internal combustion engines usually referred to are piston internal combustion engines. Among piston internal combustion engines, the reciprocating piston type is the most common. The piston internal combustion engine mixes fuel and air and burns them in its cylinder. The heat energy released causes high-temperature and high-pressure combustion gas to be generated in the cylinder. The expansion of the combustion gas pushes the piston to do work, and then the mechanical work is output through the crank-connecting rod mechanism or other mechanisms to drive the driven machinery to work. Common ones include diesel engines and gasoline engines. They convert internal energy into mechanical energy, which is changing internal energy by doing work. Internal combustion engines are closely related to human life and have brought great convenience to human life.

[0003] The compression ratio of an internal combustion engine refers to the degree to which the engine's mixed gas is compressed. It is the ratio of the total cylinder volume before compression to the cylinder volume after compression (i.e., the combustion chamber volume). The higher the compression ratio, the higher the thermal efficiency. However, as the compression ratio increases, the thermal efficiency growth rate becomes smaller and smaller, and it is more likely to produce knock. A compression ratio that is too low will lower the compression end temperature and affect the cold start performance. Therefore, a suitable compression ratio is crucial for the operation of an internal combustion engine. However, traditional internal combustion engines lack the function of adjusting the compression ratio, which limits the efficiency of a single internal combustion engine and cannot maximize the combustion efficiency of the internal combustion engine. In addition, when traditional internal combustion engines are in use, especially diesel engines, the exhaust gas they generate contains a large amount of carbon deposits and soot, which will have a negative impact on the environment if discharged into the atmosphere. They do not have exhaust gas treatment devices and need to be improved overall.

[0004] Therefore, a compression ratio adjustable internal combustion engine is proposed. Summary of the invention

[0005] The object of the present invention is to provide an internal combustion engine with adjustable compression ratio to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a compression ratio adjustable internal combustion engine, comprising an internal combustion engine housing, a movable groove is provided at a position near the top of the internal combustion engine housing, an air inlet hole is provided at a position near the left rear of the inner surface of the movable groove, an air outlet hole is provided at a position near the right rear of the inner surface of the movable groove, an air inlet pipe is embedded and fixedly connected to the left outer surface of the internal combustion engine housing, and the air inlet pipe is communicated with the air inlet hole, an air outlet pipe is embedded and fixedly connected to the right outer surface of the internal combustion engine housing, and the air outlet hole is communicated with the air outlet hole, and the left and right outer surfaces of the internal combustion engine housing are A rotating shaft 1 is rotatably connected to a position near the lower end through a bearing, a cam is fixedly connected to one end of the rotating shaft 1 near the inner part of the internal combustion engine casing, a rotating shaft 2 is fixedly connected to the outer surface of the cam away from the rotating shaft 1 near the lower end, a push rod is hinged on the outer surface of the rotating shaft 2, a piston 1 is hinged on the top of the push rod, an adjusting mechanism is provided inside the movable groove near the top of the piston 1, a filtering mechanism is provided inside the exhaust pipe, the adjusting mechanism and the filtering mechanism work together, which can not only more conveniently adjust the compression ratio of the internal combustion engine, but also filter and collect the carbon deposits passing through the exhaust pipe.

[0007] Preferably, the adjusting mechanism comprises a through groove, a slide groove, a sleeve one, a piston two, a bearing, a sleeve two, a connecting rod and a fixed block. A through groove is provided at the top end of the inner surface of the movable groove, and slide grooves are symmetrically provided on the left and right sides of the inner surface of the through groove. Sleeve one is slidably connected to the inner surface of the slide groove, and piston two is fixedly connected to the lower end of sleeve one. A bearing is fixedly connected to the inner surface of the through groove near the upper end, and sleeve two is fixedly connected to the inner surface of the inner ring of the bearing. Sleeve two is threadedly connected to sleeve one, and the inner surface of sleeve two is slidably connected to a connecting rod, and the top end of the connecting rod is fixedly connected to a fixed block.

[0008] Preferably, the connecting rod and the sleeve are both designed as T-shaped structures to match each other and are slidably connected, and the cross-sections of both are polygonal structures to match each other.

[0009] Preferably, a locking assembly is provided on the outer surface of the upper end of the internal combustion engine casing near the connecting rod, and the locking assembly includes a clamping block, a limit block, a clamping groove, and a spring 1. The front and rear end outer surfaces of the fixed block are fixedly connected with clamping blocks, and the front and rear end outer surfaces of the upper end of the internal combustion engine casing are symmetrically fixedly connected with the limit blocks near the clamping blocks. A clamping groove is provided on the outer surface of the upper end of the limit block corresponding to the position of the clamping block. A spring 1 is sleeved on the outer surface of the connecting rod near the top end. One end of the spring 1 is fixedly connected to the connecting rod, and the other end of the spring is fixedly connected to the sleeve 2.

[0010] Preferably, a fixing column is fixedly connected to the outer surface of the upper end of the internal combustion engine casing near the right side, an indicating disk is rotatably connected to the annular outer surface of the fixing column near the bottom end through a bearing, teeth are provided on the annular outer surface of the indicating disk, a pointer is fixedly connected to the outer surface of the right side of the fixing column near the top of the indicating disk, a gear ring is fixedly connected to the annular outer surface of the sleeve 2 corresponding to the position of the indicating disk, and the gear ring is meshed with the teeth on the indicating disk.

[0011] Preferably, guide grooves are symmetrically provided on both sides of the top of the inner surface of the movable groove, and a guide column is slidably connected to the inner surface of the guide groove. The guide column is fixedly connected to piston 2 at one end away from the guide groove, and spring 2 is sleeved on the outer surface of the guide column near the position between piston 2 and the guide groove.

[0012] Preferably, the filtering mechanism includes a filter tube, a connecting frame, a rotating shaft three, turbine blades, a cleaning brush, and a filter box. The filter tube is arranged inside the air outlet pipe, and the two are threadedly connected. The connecting frame is symmetrically fixedly connected to the left and right sides of the inner surface of the filter tube. The connecting frame is designed as a hollow structure. The connecting frame is rotatably connected to the rotating shaft three on one side close to the center of the filter tube through a bearing. The left end of the rotating shaft three is fixedly connected to the turbine blades. The outer surface of the upper end of the rotating shaft three is fixedly connected to a cleaning brush, and the cleaning brush is in contact with the inner wall of the filter tube. The filter box is threadedly connected to the annular outer surface of the filter tube near the right end.

[0013] Preferably, a plurality of groups of blocking pieces are fixedly connected to the right outer surface of the connecting frame close to the right side, and the blocking pieces are designed with an arc-shaped structure and match the filter tube orifice, and are made of elastic metal material.

[0014] Preferably, a plurality of groups of positioning blocks are fixedly connected at equal intervals on the annular outer surface of the filter tube near the right end, an extension groove is provided on the outer surface of the positioning block away from the filter tube, a spring sheet is provided on the inner surface of the extension groove, and a rubber block is fixedly connected at a position corresponding to the spring sheet on the outer surface of the positioning block away from the filter tube.

[0015] Preferably, the extension groove is designed as a T-shaped structure and matches with the spring sheet, and the spring sheet is designed as a C-shaped structure and is made of elastic metal material.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. By adding an adjustment mechanism to the device, the compression ratio of the internal combustion engine can be adjusted more conveniently, so that the internal combustion engine can work normally within the appropriate range of compression ratio, which greatly improves the thermal efficiency of the internal combustion engine, can effectively avoid the occurrence of knocking, improves the use efficiency of the device, and has strong overall practicality;

[0018] 2. By adding a filtering mechanism to the device, the carbon deposits generated by the internal combustion engine can be automatically filtered, cleaned and collected to prevent the accumulation of smoke in the exhaust pipe and blockage of the exhaust pipe, affecting the discharge of exhaust gas, greatly reducing the discharge of harmful gases and reducing damage to the environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is the overall structural view of the present invention;

[0021] Figure 2 It is a partial front cross-sectional view of the present invention;

[0022] Figure 3 It is a right sectional view of the locking assembly of the present invention;

[0023] Figure 4 For the present invention Figure 2 Enlarged view at A in the middle;

[0024] Figure 5 is a front cross-sectional view of the filtering mechanism of the present invention;

[0025] Figure 6 For the present invention Figure 5 Enlarged view of point B in the middle.

[0026] Description of reference numerals:

[0027] 1. Internal combustion engine housing; 2. Movable groove; 21. Inlet hole; 22. Exhaust hole; 23. Inlet pipe; 24. Exhaust pipe; 3. Rotating shaft 1; 31. Cam; 32. Rotating shaft 2; 33. Push rod; 34. Piston 1; 4. Adjusting mechanism; 41. Through groove; 42. Slide groove; 43. Sleeve 1; 44. Piston 2; 45. Bearing; 46. Sleeve 2; 47. Connecting rod; 48. Fixed block; 5. Locking assembly; 51. Block ; 52, limit block; 53, slot; 54, spring one; 6, fixing column; 61, indicator plate; 62, pointer; 63, gear ring; 7, guide groove; 71, guide column; 72, spring two; 8, filter mechanism; 81, filter tube; 82, connecting frame; 83, shaft three; 84, turbine blade; 85, cleaning brush; 86, filter box; 9, baffle; 10, positioning block; 11, extension groove; 12, spring; 13, rubber block. DETAILED DESCRIPTION

[0028] 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.

[0029] See also Figures 1 to 6 , the present invention provides a technical solution:

[0030] A compression ratio adjustable internal combustion engine, comprising an internal combustion engine housing 1, wherein a movable groove 2 is provided at a position near the top of the internal combustion engine housing 1, an air inlet 21 is provided at a position near the left rear of the inner surface of the movable groove 2, and an air outlet 22 is provided at a position near the right rear of the inner surface of the movable groove 2, an air inlet pipe 23 is embedded and fixedly connected to the left outer surface of the internal combustion engine housing 1, and the air inlet pipe 23 is communicated with the air inlet 21, an air outlet pipe 24 is embedded and fixedly connected to the right outer surface of the internal combustion engine housing 1, and the air outlet pipe 24 is communicated with the air outlet 22, and the left and right outer surfaces of the internal combustion engine housing 1 are rotatably connected near the lower end through bearings There is a rotating shaft 3, and a cam 31 is fixedly connected to one end of the rotating shaft 3 near the inside of the internal combustion engine casing 1, and a rotating shaft 2 32 is fixedly connected to the outer surface of the cam 31 away from the rotating shaft 3 near the lower end, and a push rod 33 is hinged on the outer surface of the rotating shaft 2 32, and a piston 1 34 is hinged on the top of the push rod 33. An adjusting mechanism 4 is provided inside the movable groove 2 near the top of the piston 1 34, and a filtering mechanism 8 is provided inside the exhaust pipe 24. The adjusting mechanism 4 and the filtering mechanism 8 work together, which can not only more conveniently adjust the compression ratio of the internal combustion engine, but also filter and collect the carbon deposits passing through the exhaust pipe 24.

[0031] By adopting the above technical scheme, when working, air and fuel are introduced into the sliding cavity through the intake pipe 23 and the intake hole 21, and the fuel is ignited to generate a large impact force, which drives the piston 1 34 to slide and rise and fall inside the movable groove 2, pushes the push rod 33 to do lifting and falling motion inside the movable groove 2, drives the rotating shaft 2 32 to do circular motion, and thus drives the rotating shaft 1 3 to rotate through the rotating shaft 2 32 and the cam 31. When it is necessary to adjust the compression ratio of the device, it is only necessary to adjust the compression ratio of the internal combustion engine to a suitable range by adjusting the adjustment mechanism 4, so that the internal combustion engine works at a better thermal efficiency and the internal combustion engine works stably. When the piston 1 34 is pushed upward, the exhaust gas is discharged through the outlet hole 22 and the outlet pipe 24, and the carbon deposits and smoke in the exhaust gas can be filtered out by the filtering mechanism 8 to prevent the smoke from accumulating in the outlet pipe 24 and causing the exhaust pipe to be blocked, which greatly reduces the discharge of harmful gases and the damage to the environment. The overall structure is simple and practical.

[0032] As an embodiment of the present invention, Figure 2 As shown, the adjusting mechanism 4 includes a through groove 41, a slide groove 42, a sleeve 1 43, a piston 2 44, a bearing 45, a sleeve 2 46, a connecting rod 47, and a fixed block 48. The top of the inner surface of the movable groove 2 is provided with a through groove 41, and the inner surface of the through groove 41 is symmetrically provided with slide grooves 42 on both sides. The inner surface of the slide groove 42 is slidably connected with a sleeve 1 43, and the lower end of the sleeve 1 43 is fixedly connected with a piston 2 44. The inner surface of the through groove 41 is fixedly connected with a bearing 45 near the upper end, and the inner surface of the inner ring of the bearing 45 is fixedly connected with a sleeve 2 46. The sleeve 2 46 is threadedly connected to the sleeve 1 43, and the inner surface of the sleeve 2 46 is slidably connected with a connecting rod 47, and the top of the connecting rod 47 is fixedly connected with a fixed block 48.

[0033] By adopting the above technical solution, when the compression ratio of the internal combustion engine needs to be adjusted, it is only necessary to rotate the fixed block 48 to drive the sleeve 2 46 to rotate through the connecting rod 47. Since the sleeve 2 46 is threadedly connected to the sleeve 1 43, the sleeve 1 43 will be driven to slide up and down along the slide groove 42, thereby driving the piston 2 44 fixedly connected thereto to rise and fall vertically, and then the position of the piston 2 44 in the movable groove 2 can be adjusted. When the piston 1 34 performs reciprocating lifting and lowering motion in the slide cavity, the position of the piston 2 44 changes, thereby changing the compression ratio of the internal combustion engine. After adjusting it to a suitable position, the internal combustion engine can work at the best thermal efficiency, with a simple structure and convenient operation.

[0034] As an embodiment of the present invention, Figure 1 and Figure 3 As shown, the connecting rod 47 and the sleeve 46 are both T-shaped structures designed to match each other and are slidably connected, and the cross-sections of both are polygonal structures that match each other.

[0035] By adopting the above technical solution, the connection between the connecting rod 47 and the sleeve 2 46 is made tighter, and it is ensured that the two will not separate from each other during the sliding process. The cross-sections of the two are polygonal structures that match each other, ensuring that the rotation of the connecting rod 47 can drive the sleeve 2 46 to rotate synchronously.

[0036] As an embodiment of the present invention, Figure 3As shown, a locking assembly 5 is provided on the upper outer surface of the internal combustion engine casing 1 near the connecting rod 47, and the locking assembly 5 includes a block 51, a limit block 52, a slot 53, and a spring 54. The front and rear outer surfaces of the fixed block 48 are fixedly connected with the block 51, and the front and rear ends of the upper outer surface of the internal combustion engine casing 1 are symmetrically fixedly connected with the limit block 52 near the block 51. A slot 53 is provided on the upper outer surface of the limit block 52 corresponding to the position of the block 51. A spring 54 is sleeved on the outer surface of the connecting rod 47 near the top end. One end of the spring 54 is fixedly connected to the connecting rod 47, and the other end of the spring 54 is fixedly connected to the sleeve 2 46.

[0037] By adopting the above technical solution, when the compression ratio needs to be adjusted, it is only necessary to hold the fixed block 48 and pull it upward to drive the fixed block 48 to move upward, and drive the clamping block 51 fixedly connected thereto to move upward and disengage from the clamping groove 53, and then the fixed block 48 can be rotated, and then the piston 2 44 can be driven to move through a series of structural components such as the connecting rod 47 to adjust the compression ratio of the internal combustion engine. The upward moving connecting rod 47 will squeeze the spring 1 54. After the fixed block 48 is rotated several times in units of one circle, the compression ratio of the internal combustion engine is within the ideal range. At this time, the position of the clamping block 51 still corresponds to the clamping groove 53. Under the action of the elastic force of the spring 1 54, the connecting rod 47 is driven to move downward, and then the clamping block 51 is driven to move downward and engage with the clamping groove 53, thereby locking the piston 2 44 to prevent its position from changing during operation.

[0038] As an embodiment of the present invention, Figure 2 and Figure 4 As shown, a fixing column 6 is fixedly connected to the outer surface of the upper end of the internal combustion engine casing 1 near the right side, an annular outer surface of the fixing column 6 near the bottom end is rotatably connected to an indicator disk 61 through a bearing, and teeth are provided on the annular outer surface of the indicator disk 61. A pointer 62 is fixedly connected to the outer surface of the right side of the fixing column 6 near the top of the indicator disk 61, and a toothed ring 63 is fixedly connected to the annular outer surface of the sleeve 46 corresponding to the position of the indicator disk 61, and the toothed ring 63 is meshed with the teeth on the indicator disk 61.

[0039] By adopting the above technical solution, when the sleeve 46 rotates, the gear ring 63 fixedly connected thereto will be driven to rotate. Since the gear ring 63 and the teeth on the indicator disk 61 are meshed with each other, the indicator disk 61 will be driven to rotate. The pointer 62 fixed on the fixed column 6 remains in a fixed position and indicates different positions on the indicator disk 61, which can indicate the reading of the compression ratio of the internal combustion engine at this time, so that the user can intuitively know the compression ratio of the internal combustion engine and make adjustments as needed.

[0040] As an embodiment of the present invention, Figure 2As shown, guide grooves 7 are symmetrically provided on the left and right sides of the top of the inner surface of the movable groove 2, and the inner surface of the guide groove 7 is slidably connected with a guide column 71, and the guide column 71 is fixedly connected to the piston 2 44 at one end away from the guide groove 7, and the outer surface of the guide column 71 is close to the position between the piston 2 44 and the guide groove 7. Spring 2 72 is sleeved.

[0041] By adopting the above technical solution, when the piston 2 44 moves up and down, it will drive the guide column 71 to slide inside the guide groove 7, which can guide the movement of the piston 2 44 and greatly improve the stability of the piston 2 44. By setting the spring 2 72, the vibration of the piston 2 44 caused by igniting the fuel can be reduced, greatly improving the service life of the adjustment mechanism 4.

[0042] As an embodiment of the present invention, Figure 5 As shown, the filtering mechanism 8 includes a filter tube 81, a connecting frame 82, a rotating shaft 3 83, a turbine blade 84, a cleaning brush 85, and a filter box 86. The filter tube 81 is arranged inside the air outlet pipe 24, and the two are threadedly connected. The connecting frame 82 is symmetrically fixedly connected to the left and right sides of the inner surface of the filter tube 81. The connecting frame 82 is designed as a hollow structure. The connecting frame 82 is rotatably connected to the rotating shaft 3 83 near the center of the filter tube 81 through a bearing. The left end of the rotating shaft 3 83 is fixedly connected to the turbine blade 84. The cleaning brush 85 is fixedly connected to the outer surface of the upper end of the rotating shaft 3 83, and the cleaning brush 85 is in contact with the inner wall of the filter tube 81. The filter box 86 is threadedly connected to the annular outer surface of the filter tube 81 near the right end.

[0043] By adopting the above technical solution, when working, the exhaust gas is discharged through the exhaust pipe 24. Under the action of the filter tube 81, the carbon deposits contained in the exhaust gas can be filtered out, reducing the damage to the environment. The exhaust gas flowing inside the exhaust pipe 24 can drive the turbine blades 84 to rotate automatically, and then drive the rotating shaft 3 83 to rotate, and at the same time drive the cleaning brush 85 fixedly connected thereto to rotate, so as to sweep down the smoke and dust attached to the inner wall of the filter tube 81, and enter the filter box 86 for collection under the drive of the airflow, so as to prevent the smoke and dust from accumulating and clogging the filter tube 81 and affecting the exhaust. At the same time, the wind noise is greatly reduced, and the filter box 86 is fixed by threads, which is easy to disassemble and install for cleaning.

[0044] As an embodiment of the present invention, Figure 6 As shown, a plurality of groups of baffles 9 are fixedly connected to the right outer surface of the connecting frame 82 near the right side, and the baffles 9 are designed as arc-shaped structures and match the pipe openings of the filter tubes 81, and are made of elastic metal material.

[0045] By adopting the above technical solution, when the flowing airflow flows out to the air outlet of the filter tube 81, under the thrust of the airflow, it can drive the baffle 9 to move closer to the rotating shaft 3 83 with the fixed point with the connecting frame 82 as the fulcrum, and then can open the passage between the filter tube 81 and the filter box 86, so that the swept smoke and dust can smoothly enter the filter box 86 and be collected. When the work stops, since the baffle 9 is made of elastic metal, it will return to its original position to close the passage and prevent the smoke and dust from flowing back into the filter tube 81.

[0046] As an embodiment of the present invention, Figure 5 and Figure 6 As shown, a plurality of groups of positioning blocks 10 are fixedly connected to the annular outer surface of the filter tube 81 at equal intervals near the right end thereof, an extension groove 11 is provided on the outer surface of the positioning block 10 away from the filter tube 81, an elastic sheet 12 is provided on the inner surface of the extension groove 11, and a rubber block 13 is fixedly connected to the outer surface of the positioning block 10 away from the filter tube 81 at a position corresponding to the elastic sheet 12.

[0047] By adopting the above technical solution, under the action of the elastic force of the spring piece 12, the rubber block 13 and the exhaust pipe 24 can be prevented from fitting closely, and the position of the filter tube 81 is further fixed. Under the action of the spring piece 12 and the rubber block 13, the vibration of the filter tube 81 caused by the flow of exhaust gas can be greatly reduced, and the wind noise is greatly reduced.

[0048] As an embodiment of the present invention, Figure 6 As shown, the extension slot 11 is designed as a T-shaped structure and matches with the spring piece 12, and the spring piece 12 is designed as a C-shaped structure and is made of elastic metal material.

[0049] By adopting the above technical solution, the engagement between the extension groove 11 and the spring sheet 12 is made more stable, ensuring that the spring sheet 12 can slide normally inside the extension groove 11 with high ductility. The elastic force of the spring sheet 12 makes the rubber block 13 fit tightly with the inner wall of the air outlet pipe 24, so that the filter tube 81 can be firmly fixed.

[0050] Working principle: When working, air and fuel are introduced into the sliding cavity through the intake pipe 23 and the intake hole 21, and the fuel is ignited, which generates a large impact force, driving the piston 1 34 to slide and rise and fall inside the movable groove 2, pushing the push rod 33 to do lifting and falling motion inside the movable groove 2, driving the rotating shaft 2 32 to do circular motion, thereby driving the rotating shaft 1 3 to rotate through the rotating shaft 2 32 and the cam 31. When the compression ratio of the device needs to be adjusted, it is only necessary to hold the fixed block 48, pull it upward to drive the fixed block 48 to move upward, drive the clamping block 51 fixedly connected to it to move upward and disengage from the clamping groove 53, and then rotate the fixed block 48, drive the connecting rod 47 fixedly connected to it to rotate, and at the same time drive the sleeve 2 46 to rotate. Since the sleeve 2 46 is threadedly connected to the sleeve 1 43, it will drive the sleeve The first piston 43 slides up and down along the slide groove 42, thereby driving the second piston 44 fixedly connected thereto to rise and fall vertically, and further adjusting the position of the second piston 44 in the movable groove 2. When the first piston 34 performs reciprocating lifting and lowering motion in the slide cavity, the position of the second piston 44 changes, thereby changing the compression ratio of the internal combustion engine. After adjusting it to a suitable position, the internal combustion engine can work with the best thermal efficiency. The structure is simple and the operation is convenient. After the fixed block 48 is rotated several times in one circle, the compression ratio of the internal combustion engine is within the ideal range. At this time, the position of the clamping block 51 still corresponds to the clamping groove 53. Under the action of the elastic force of the spring 54, the connecting rod 47 is driven to move downward, thereby driving the clamping block 51 to move downward and engage with the clamping groove 53, thereby adjusting the piston The second piston 44 is locked to prevent its position from changing during operation. When the sleeve 46 rotates, it will drive the gear ring 63 fixed thereto to rotate. Since the gear ring 63 and the teeth on the indicator disk 61 are meshed with each other, the indicator disk 61 will be driven to rotate. The pointer 62 fixed on the fixed column 6 does not move, and will indicate different positions on the indicator disk 61, which can indicate the reading of the compression ratio of the internal combustion engine at this time, so that the user can intuitively know the compression ratio of the internal combustion engine so as to make adjustments as needed. When the piston 44 moves up and down, it will drive the guide column 71 to slide inside the guide groove 7, which can guide the movement of the piston 44 and greatly improve the stability of the piston 44. By setting the spring 72, the time when the fuel is ignited can be slowed down. The vibration of the piston 24 is caused, which greatly increases the service life of the regulating mechanism 4. The exhaust gas is discharged through the exhaust pipe 24. Under the action of the filter tube 81, the carbon deposits contained in the exhaust gas can be filtered out, reducing the damage to the environment. The exhaust gas flowing inside the exhaust pipe 24 can drive the turbine blades 84 to rotate automatically, thereby driving the rotation shaft 3 83 to rotate, and at the same time driving the cleaning brush 85 fixedly connected thereto to rotate, sweeping the smoke attached to the inner wall of the filter tube 81 down, and entering the filter box 86 for collection under the drive of the air flow, preventing the smoke from accumulating and causing the filter tube 81 to be blocked and affecting the exhaust, and at the same time greatly reducing the wind noise, and the filter box 86 is fixed by threads, easy to disassemble and install, and cleaned. When the flowing airflow flows out to the air outlet of the filter tube 81, under the thrust of the airflow,It can drive the baffle 9 to move closer to the rotating shaft 3 83 with the fixed position of the connecting frame 82 as the fulcrum, and then open the passage between the filter tube 81 and the filter box 86, so that the swept smoke can smoothly enter the filter box 86 and be collected. When the work stops, since the baffle 9 is elastic metal, it will return to its original position to close the passage to prevent the smoke from flowing back into the filter tube 81. Under the action of the elastic force of the spring sheet 12, it can resist the close fit of the rubber block 13 and the exhaust pipe 24, further fixing the position of the filter tube 81. Under the action of the spring sheet 12 and the rubber block 13, the vibration of the filter tube 81 caused by the flow of exhaust gas can be greatly reduced, and the wind noise is greatly reduced, ensuring the normal operation of the internal combustion engine. The overall structure is simple and practical.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An internal combustion engine with adjustable compression ratio, comprising an internal combustion engine housing (1), characterized in that: An active groove (2) is provided at a position near the top of the internal casing (1) of the internal combustion engine. An air inlet (21) is provided on the inner surface of the active groove (2) near the left rear. An air outlet (22) is provided on the inner surface of the active groove (2) near the right rear. An air inlet pipe (23) is embedded and fixedly connected to the left outer surface of the internal combustion engine casing (1), and the air inlet pipe (23) is communicated with the air inlet hole (21). An air outlet pipe (24) is embedded and fixedly connected to the right outer surface of the internal combustion engine casing (1), and the air outlet hole (22) is communicated with each other. A rotating shaft (3) is rotatably connected to the left and right outer surfaces of the internal combustion engine casing (1) near the lower end through a bearing. The rotating shaft (3) A cam (31) is fixedly connected to one end of the internal combustion engine housing (1); a second rotating shaft (32) is fixedly connected to the outer surface of the cam (31) at a position close to the lower end on the side away from the first rotating shaft (3); a push rod (33) is hingedly connected to the outer surface of the second rotating shaft (32); a piston (34) is hingedly connected to the top of the push rod (33); an adjustment mechanism (4) is arranged at a position above the first piston (34) in the movable groove (2); a filter mechanism (8) is arranged inside the outlet pipe (24); the adjustment mechanism (4) and the filter mechanism (8) work together, which can not only more conveniently adjust the compression ratio of the internal combustion engine, but also filter and collect the carbon deposits passing through the outlet pipe (24); The adjusting mechanism (4) comprises a through groove (41), a slide groove (42), a sleeve one (43), a piston two (44), a bearing (45), a sleeve two (46), a connecting rod (47), and a fixed block (48). The top of the inner surface of the movable groove (2) is provided with a through groove (41). The inner surface of the through groove (41) is symmetrically provided with slide grooves (42) on both sides. The inner surface of the slide groove (42) is slidably connected with a sleeve one (43). The lower end of the sleeve one (43) is fixedly connected with a piston two (44). The inner surface of the through groove (41) is fixedly connected with a bearing (45) at a position close to the upper end. The inner surface of the inner ring of the bearing (45) is fixedly connected with a sleeve two (46). The sleeve two (46) is threadedly connected to the sleeve one (43). The inner surface of the sleeve two (46) is slidably connected with a connecting rod (47). The top of the connecting rod (47) is fixedly connected with a fixed block (48). The connecting rod (47) and the second sleeve (46) are both designed as T-shaped structures, match each other and are slidably connected, and the cross-sections of both are polygonal structures that match each other; A locking assembly (5) is provided on the upper outer surface of the internal combustion engine housing (1) near the connecting rod (47), and the locking assembly (5) comprises a clamping block (51), a limiting block (52), a clamping groove (53), and a spring (54). The front and rear outer surfaces of the fixing block (48) are fixedly connected with the clamping block (51). The front and rear ends of the upper outer surface of the internal combustion engine housing (1) are symmetrically fixedly connected with the limiting block (52) near the clamping block (51). The upper outer surface of the limiting block (52) is provided with a clamping groove (53) corresponding to the position of the clamping block (51). The outer surface of the connecting rod (47) near the top is sleeved with a spring (54). One end of the spring (54) is fixedly connected to the connecting rod (47), and the other end of the spring (54) is fixedly connected to the sleeve (46).

2. The compression ratio adjustable internal combustion engine according to claim 1, characterized in that: A fixing column (6) is fixedly connected to the outer surface of the upper end of the internal combustion engine housing (1) near the right side, and an annular outer surface of the fixing column (6) is rotatably connected to an indicator disk (61) near the bottom end through a bearing, and teeth are provided on the annular outer surface of the indicator disk (61). A pointer (62) is fixedly connected to the outer surface of the right side of the fixing column (6) near the top of the indicator disk (61), and a toothed ring (63) is fixedly connected to the annular outer surface of the sleeve (46) corresponding to the position of the indicator disk (61), and the toothed ring (63) and the teeth on the indicator disk (61) are meshed with each other.

3. The compression ratio adjustable internal combustion engine according to claim 1, characterized in that: The top of the inner surface of the movable groove (2) is symmetrically provided with guide grooves (7) on both sides, the inner surface of the guide groove (7) is slidably connected with a guide column (71), the end of the guide column (71) away from the guide groove (7) is fixedly connected to the second piston (44), and the outer surface of the guide column (71) is sleeved with a second spring (72) at a position close to the position between the second piston (44) and the guide groove (7).

4. The compression ratio adjustable internal combustion engine according to claim 1, characterized in that: The filtering mechanism (8) comprises a filter tube (81), a connecting frame (82), a rotating shaft three (83), turbine blades (84), a cleaning brush (85), and a filter box (86). The filter tube (81) is arranged inside the air outlet pipe (24), and the two are threadedly connected. The connecting frame (82) is symmetrically fixedly connected to the left and right sides of the inner surface of the filter tube (81). The connecting frame (82) is designed as a hollow structure. The connecting frame (82) is rotatably connected to the rotating shaft three (83) through a bearing on one side close to the center of the filter tube (81). The left end of the rotating shaft three (83) is fixedly connected to the turbine blades (84). The cleaning brush (85) is fixedly connected to the outer surface of the upper end of the rotating shaft three (83), and the cleaning brush (85) and the inner wall of the filter tube (81) are mutually fitted. The filter box (86) is threadedly connected to the annular outer surface of the filter tube (81) near the right end.

5. The compression ratio adjustable internal combustion engine according to claim 1, characterized in that: A plurality of groups of baffles (9) are fixedly connected to the right outer surface close to the right connecting frame (82), and the baffles (9) are designed as arc-shaped structures and match the pipe openings of the filter pipes (81), and are made of elastic metal material.

6. The compression ratio adjustable internal combustion engine according to claim 1, characterized in that: A plurality of groups of positioning blocks (10) are fixedly connected to the annular outer surface of the filter tube (81) at equidistant positions near the right end thereof, an extension groove (11) is provided on the outer surface of the positioning block (10) at a side away from the filter tube (81), an elastic sheet (12) is provided on the inner surface of the extension groove (11), and a rubber block (13) is fixedly connected to the outer surface of the side of the positioning block (10) away from the filter tube (81) at a position corresponding to the elastic sheet (12).

7. The compression ratio adjustable internal combustion engine according to claim 1, characterized in that: The extension groove (11) is designed as a T-shaped structure and matches with the spring sheet (12), and the spring sheet (12) is designed as a C-shaped structure and is made of elastic metal material.

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