Cyclonic two-stroke engine

Abstract

The utility model relates to a cyclonic two-stroke engine which comprises an engine body shell. The high-pressure gas cylinder is arranged on the outer side of the machine body shell; the air pump air cylinder is arranged in the machine body shell and is communicated with the high-pressure air cylinder; the fuel oil cylinder is adjacent to the air pump cylinder and is communicated with the high-pressure gas cylinder; the fuel oil piston is arranged in the fuel oil air cylinder; the air pump piston is arranged in the air pump air cylinder; the first protruding surrounding edge is arranged at the upper end of the fuel oil piston and connected with the fuel oil piston. The cylinder cover is arranged at the top end of the fuel oil cylinder and is connected with the engine body shell; the second protruding surrounding edge is arranged below the air cylinder cover and connected with the air cylinder cover, and the second protruding surrounding edge and the first protruding surrounding edge are correspondingly arranged in the vertical direction. The power assembly is arranged at the bottom of the machine body shell and connected with the air pump piston and the fuel oil piston. The first protruding surrounding edge and the second protruding surrounding edge are arranged, so that the area between the air cylinder cover and the fuel oil piston is separated, high-pressure fuel gas is mixed with purified pressurized air, and the fuel oil heat efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of engines, in particular to a cyclone two-stroke engine. Background Art

[0002] In the prior art, gasoline engines for automobiles or motorcycles generally include two types: four-stroke gasoline engines and two-stroke gasoline engines. Both are limited by the compression ratio, resulting in limitations in power improvement and fuel consumption, showing high fuel consumption and low power.

[0003] During the piston movement in the cylinder of the above engines, whether it is a low-ignition-point compression-ignition type or a spark plug ignition type, due to the limitation of the fuel and air ignition point, the volume of the compression space in the cylinder is fixed, and the volume of the mixed fuel and air obtained by compressing the fuel and air is fixed, resulting in a fixed compression ratio. Therefore, the thermal efficiency of the fuel is not fully utilized, and the fuel thermal efficiency cannot be further improved. The applicant of this application, that is, the inventor, has been engaged in engine R & D work on the front line of engine production for many years. Based on the above defects existing in the prior art and years of R & D work experience, the applicant continues to focus on engine R & D work and has obtained the authorization of the following patent. This patent involves a technology for charging compressed air into the cylinder. For example, the engine in the patent with the patent number CN208564759U and the patent name "Pump-charged Two-stroke High-pressure Power Gasoline-alcohol Dual-use Engine" improves the fuel thermal efficiency by doubling the amount of compressed air with a high compression ratio into the cylinder. However, the above authorized patent technology is to charge high-compression-ratio air into the cylinder of the engine, which can only increase the compression ratio of the air and cannot further improve the fuel thermal efficiency. A large amount of the thermal energy of the fuel is still wasted, and there are still certain technical defects.

[0004] Therefore, this application provides a cyclone two-stroke engine. Summary of the Utility Model

[0005] (1) Technical Problems to be Solved

[0006] In view of the above-mentioned shortcomings and deficiencies of the prior art, the utility model provides a cyclone two-stroke engine, which solves the technical problems of the prior art.

[0007] (2) Technical Solutions

[0008] To achieve the above object, the present utility model provides a cyclone two-stroke engine, and the technical solutions adopted include: a body shell; a high-pressure gas cylinder disposed outside the body shell; an air pump cylinder disposed inside the body shell and communicating with the high-pressure gas cylinder; a fuel cylinder disposed adjacent to the air pump cylinder and communicating with the high-pressure gas cylinder; a fuel piston disposed inside the fuel cylinder; an air pump piston disposed inside the air pump cylinder; a first convex rim disposed at the upper end of the fuel piston and connected to the fuel piston; a cylinder head disposed at the top of the fuel cylinder and connected to the body shell; a second convex rim disposed below the cylinder head, connected to the cylinder head, and correspondingly disposed with the first convex rim in the vertical direction; a power assembly disposed at the bottom of the body shell and connected to both the air pump piston and the fuel piston.

[0009] Optionally, the number of air pump cylinders is multiple, and the multiple air pump cylinders are arranged side by side; the number of fuel cylinders is multiple, and the multiple fuel cylinders are arranged side by side.

[0010] Optionally, both the first convex rim and the second convex rim are annular protrusions.

[0011] Optionally, the power assembly includes: a connecting rod disposed below the air pump piston and the fuel piston and connected to both the air pump piston and the fuel piston; a crankshaft disposed below the connecting rod and connected to the crankshaft; a flywheel disposed on the side wall of the body shell and connected to the crankshaft; a starter disposed outside the body shell and meshed with the upper gear ring of the flywheel.

[0012] Optionally, a high-pressure jet nozzle penetrates through the cylinder head and is connected to the cylinder head, and the high-pressure jet nozzle is disposed between the first convex rim and the cylinder wall of the fuel cylinder; a push-button air flow switch is disposed above the cylinder head and communicates with the high-pressure jet nozzle; a rotary column type air valve switch is disposed between the high-pressure gas cylinder and the push-button air flow switch and connected to both the high-pressure gas cylinder and the push-button air flow switch.

[0013] Optionally, the number of high-pressure jet nozzles is two, and the jet directions of the two high-pressure jet nozzles are horizontally arranged and opposite to each other.

[0014] Optionally, the fuel cylinder further includes: an air intake through hole opened on the first side wall of the fuel cylinder to communicate the inside and outside of the fuel cylinder; an air intake inlet opened inside the second side wall of the fuel cylinder, the second side wall being opposite to the first side wall; an air intake port opened inside the second side wall of the fuel cylinder and communicating with the air intake inlet, and disposed above the air intake inlet.

[0015] Optionally, an injector is inserted through and connected to the cylinder head; a common rail is disposed outside the engine block and connected to the injector through a pipeline; a fuel injection pump is disposed below the common rail and connected to the common rail through a pipeline; a flow control valve is disposed on the side of the fuel injection pump and connected to the fuel injection pump through a pipeline; a filter assembly is disposed on the side of the flow control valve and connected to the flow control valve through a pipeline; a dual-format fuel tank is disposed outside the engine housing and connected to the filter assembly through a pipeline.

[0016] Optionally, the filter assembly includes: an alcohol filter disposed on the side of the flow control valve and connected to the dual-format fuel tank through a pipeline; a fuel filter disposed adjacent to the alcohol filter and connected to the dual-format fuel tank through a pipeline.

[0017] Optionally, a manual switch is disposed between the high-pressure gas cylinder and the flow control valve and connected to the high-pressure gas cylinder through a pipeline; an electromagnetic switch is disposed between the manual switch and the flow control valve and connected to the manual switch; a pressure regulating valve is disposed between the electromagnetic switch and the flow control valve and connected to both the electromagnetic switch and the flow control valve.

[0018] (III) Advantageous Effects

[0019] The advantageous effects of the present utility model are as follows:

[0020] The utility model provides a cyclone type two-stroke engine. By arranging an air pump cylinder in the engine body shell and connecting the air pump cylinder with a power assembly, the power assembly drives the air pump cylinder to move, thereby generating purified and pressurized air. The purified and pressurized air enters a high-pressure gas cylinder arranged outside the engine body shell through a pipeline. The purified and pressurized air in the high-pressure gas cylinder enters a fuel cylinder through a pipeline. Since a first raised edge is arranged on a fuel piston in the fuel cylinder and a second raised edge is arranged on a cylinder head, and the first raised edge and the second raised edge are arranged corresponding to each other in the vertical direction, the fuel piston makes a piston movement in the fuel cylinder. When the fuel piston moves to the top dead center, that is, when it is close to the cylinder head, due to the existence of the first edge and the second edge, the area between the cylinder head and the piston is divided into two areas. One area is the area wrapped by the first raised edge and the second raised edge, and the other area is the area between the first raised edge, the second raised edge and the cylinder wall of the fuel cylinder. It is realized that the area wrapped by the first raised edge and the second raised edge contains mixed oil and gas, while the area wrapped by the first raised edge, the second raised edge and the cylinder wall of the fuel cylinder contains the purified and pressurized air input through the high-pressure gas cylinder. When the mixed oil and gas is ignited after the fuel piston enters the top dead center, as the fuel piston moves downward, the high-pressure gas contacts and mixes with the purified and pressurized air. The high-pressure gas rushes into and heats the purified and pressurized air, causing the purified and pressurized air to expand, and is pushed by the fuel piston to do work together with the high-pressure gas. It is equivalent to making a secondary use of the heat energy that should have been discharged by the hot gas of one-time work in the same cylinder. On the basis of increasing the compression ratio to obtain high kinetic energy, the heat energy is further converted into kinetic energy, thereby further improving the thermal efficiency of the fuel.

[0021] Therefore, in summary, the technical solution of the utility model solves the technical problems of weak power, high fuel consumption, low thermal efficiency and single fuel use of a conventional gasoline engine. Through cyclone supercharging, while realizing high-compression-ratio power work, the secondary use of heat energy in the same cylinder is realized, and the thermal efficiency of the engine is greatly improved.

[0022] Furthermore, the cyclonic two-stroke engine of the utility model independently completes the filling of high-pressure gas cylinders by its own low-compression-ratio first-stage two-stroke conventional working function, and does not require external assistance to complete the work, thus overcoming the design defect of the pump-filled gasoline-alcohol dual-purpose engine that cannot independently complete the filling of high-pressure gas, and the many inconveniences caused. After entering the second-stage cyclonic supercharged high-compression ratio stage, after the engine is assembled on the vehicle, the intake volume can be freely adjusted according to the throttle size through the connecting traction rod line. When the vehicle stops running and idles, after the accelerator pedal is reset, the engine returns to the first-stage low-compression ratio conventional low-pressure working state because the high-pressure charging is stopped. It not only maintains the relative quietness of conventional gasoline engines at idle speed and reduces vibration, but also has the strong power of high-compression ratio working when feeding forward, so this is a special engine with adjustable compression ratio function.

[0023] Furthermore, the cyclone-type two-stroke engine of the utility model realizes that after cyclone supercharging, while the compression ratio is improved, because it is filled with high-pressure air, the compression ratio will not be greatly increased to cause deflagration. Its innovation lies in that the high-pressure cyclone realizes that the inside is a mixed oil and gas, and the outside is wrapped with pure air. When the mixed oil and gas is ignited after the piston enters the top dead center, the high-pressure combustion gas rushes in and heats the pure air around it, causing it to expand and push the piston to do work together with the hot high-pressure combustion gas. This is equivalent to reusing the heat energy that should have been discharged by the hot combustion gas once in the same cylinder. Therefore, on the basis of improving the compression ratio to obtain high kinetic energy, the heat energy is further converted into kinetic energy, thereby further improving the thermal energy efficiency.

[0024] Furthermore, the cyclone two-stroke engine of the utility model can convert gasoline, methanol and ethanol into universal energy. It is different from the conventional oil-alcohol engine. The conventional oil-alcohol engine relies on high fuel consumption to achieve power conversion under low compression ratio. The cyclone two-stroke engine of the utility model is cyclone supercharged, which greatly improves the compression ratio, thereby achieving high power and high thermal efficiency of oil-alcohol work, so that methanol and ethanol become more economical and applicable clean energy. Its value and significance is to open up the application market for methanol and ethanol, which are on the edge of power fuel.

[0025] Furthermore, the cyclone two-stroke engine of the utility model solves the dilemma that methanol and ethanol cannot be used as power fuels due to the compression ratio of conventional engines. Due to the improvement of the compression ratio, methanol and ethanol become very good clean energy and can be used as power fuels, thereby partially solving the problem of tight oil energy. Because the power improvement saves fuel consumption, it also indirectly reduces and solves the environmental protection problem, making it more environmentally friendly.

[0026] In summary, the cyclone two-stroke engine of the present utility model solves many problems of conventional gasoline engines, such as weak power, high fuel consumption, low thermal efficiency, and single fuel use. Through cyclone supercharging, high-compression ratio power work is achieved, and at the same time, secondary utilization of heat energy in the same cylinder is realized, greatly improving the thermal efficiency of the engine. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 FIG. is a schematic diagram of the overall structure of the cyclone two-stroke engine of the present utility model;

[0028] Figure 2 FIG. is a sectional view of the cyclone two-stroke engine of the present utility model from another angle;

[0029] Figure 3 FIG. is a sectional view of the cyclone two-stroke engine of the present utility model from yet another angle;

[0030] Figure 4 FIG. is a sectional view of the fuel cylinder of the cyclone two-stroke engine of the present utility model.

[0031]

DESCRIPTION OF THE REFERENCE NUMERALS

[0032] 1, crankshaft; 2, crankcase; 3, connecting rod; 4, intake through hole; 5, cylinder barrel; 6, body shell; 7-1, air pump piston; 7-2, fuel piston; 8, first raised rim; 9, traction spring; 10, high-pressure gas cylinder; 11, manual switch; 12, electromagnetic switch; 13, pressure regulating valve; 14, high-pressure gas transmission pipe; 15, rocker arm; 16, camshaft; 17, branch pipe of high-pressure gas transmission pipe; 18, exhaust valve; 19, spark plug; 20, fuel injector; 21, cylinder head; 22, air flow regulating pressure pull rod line; 23, downward annular air flow pipe cavity; 24, air inlet; 25, closed cover; 26, air intake; 27, air pressure regulating valve; 28, high-pressure air jet nozzle; 29, second raised rim; 30, press-type air flow switch; 31, flywheel; 32, oil sump; 36, rotating column type valve switch; 37, air duct; 38, starter; 39, inflation valve; 42, bevel gear; 43, gear type oil pump; 44, oil filter; 45, turbine; 46, synchronous toothed belt; 47, water pump; 49, fan; 50, radiator; 51, double-format fuel tank; 52, fuel filter; 53, alcohol filter; 54, supercharging fan; 55, air filter; 56, drive belt; 57, fuel injection pump pulley; 58, common rail; 59, exhaust port; 60, fuel injection pump; 61, air outlet; 62, flow regulating valve; 63, generator pulley; 64, camshaft pulley; 65, oil pump pulley; 66, main power pulley; 67, tensioner; 68, driven wheel; 69, distributor. DETAILED DESCRIPTION OF THE INVENTION

[0033] In order to better explain the present utility model for easier understanding, the present utility model will be described in detail below in conjunction with the drawings and through specific embodiments.

[0034] This embodiment provides a cyclone two-stroke engine, including: a body shell 6; a high-pressure gas cylinder 10 disposed outside the body shell 6; an air pump cylinder disposed inside the body shell 6 and communicating with the high-pressure gas cylinder 10; a fuel cylinder adjacent to the air pump cylinder and communicating with the high-pressure gas cylinder 10; a fuel piston 7-2 disposed inside the fuel cylinder; an air pump piston 7-1 disposed inside the air pump cylinder; a first convex rim 8 disposed at the upper end of the fuel piston 7-2 and connected to the fuel piston 7-2; a cylinder head 21 disposed at the top of the fuel cylinder and connected to the body shell 6; a second convex rim 29 disposed below the cylinder head 21 and connected to the cylinder head 21, and correspondingly disposed in the vertical direction with the first convex rim 8; a power assembly disposed at the bottom of the body shell 6 and connected to both the air pump piston 7-1 and the fuel piston 7-2.

[0035] As Figure 1 and Figure 4 shown, the structure inside the cylinder head 21 is different from that of the cylinder head 21 in the prior art. On the end face of the cylinder head 21 facing downward towards the piston top, there is a first convex rim 8, which is an annular convex rim. The first convex rim 8 divides the inside of the cylinder head 21 into two regions: an inner circle and an outer circle. An injector 20, a spark plug 19, and an exhaust valve 18 are respectively disposed in the inner circle region and are controlled by a rocker arm 15 above it. At the outer circle formed by the cylinder wall at intervals of the second convex rim 29, there is a semi-circular inner concave upwards. An up-down type annular air flow pipe cavity 23 with a diameter of 5 mm - 8 mm is opened upwards in the inner concave. In each cylinder barrel 5, 2 high-pressure jet nozzles 28 are implanted inside the cylinder head 21, and the high-pressure jet nozzles 28 are placed inside the up-down type annular air flow pipe cavity 23. Since 2 high-pressure jet nozzles 28 are provided, correspondingly, high-pressure gas pipe branches 17 are connected to a push-button air flow switch 30. In this way, the high-pressure air flow input through the push-button air flow switch 30 enters the 2 high-pressure jet nozzles 28 respectively through the high-pressure gas pipe branches 17, and then enters the inside of the cylinder barrel 5.

[0036] As Figure 1 and Figure 4As shown, a fuel piston 7-2 is provided inside the fuel cylinder of the cyclone two-stroke engine in this embodiment, which is different from the conventional one. On the top surface of the fuel piston 7-2, a first raised rim 8 is also provided, which also divides the end surface of the fuel piston 7-2 into two regions: an inner circular region and an outer circular region. There are different downward concavities along the inner and outer end surfaces. That is, after the fuel piston 7-2 rises to the top dead center, through the alignment of the first raised rim 8 and the second raised rim 29, the charged high-pressure air and the compressed internal memory air are divided into two parts inside and outside, and are separated by the first raised rim 8 and the second raised rim 29.

[0037] In the cyclone two-stroke engine of this embodiment, by providing the first raised rim 8 and the second raised rim 29, the area between the cylinder head 21 and the fuel piston 7-2 is separated, enabling the high-pressure gas to be mixed with the purified and supercharged air, further improving the thermal efficiency of the fuel.

[0038] To better understand the above technical solution, the exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to enable a clearer and more thorough understanding of the present invention and to be able to convey the scope of the present invention completely to those skilled in the art.

[0039] Embodiment:

[0040] An embodiment of the present invention provides a cyclone two-stroke engine, as Figure 1 , Figure 2 , Figure 3 and Figure 4 shown, including: a body shell 6; a high-pressure gas cylinder 10 provided outside the body shell 6; an air pump cylinder provided inside the body shell 6 and communicating with the high-pressure gas cylinder 10; a fuel cylinder adjacent to the air pump cylinder and communicating with the high-pressure gas cylinder 10; a fuel piston 7-2 provided inside the fuel cylinder; an air pump piston 7-1 provided inside the air pump cylinder; a first raised rim 8 provided at the upper end of the fuel piston 7-2 and connected to the fuel piston 7-2; a cylinder head 21 provided at the top of the fuel cylinder and connected to the body shell 6; a second raised rim 29 provided below the cylinder head 21 and connected to the cylinder head 21, and corresponding to the first raised rim 8 in the vertical direction; a power assembly provided at the bottom of the body shell 6 and connected to both the air pump piston 7-1 and the fuel piston 7-2.

[0041] Exemplarily, an inflation valve 39 is provided on the side wall of the high-pressure gas cylinder 10 to facilitate adjusting the air pressure of the high-pressure gas cylinder or exhausting the high-pressure air inside the high-pressure gas cylinder 10 when the high-pressure gas cylinder 10 stops being used.

[0042] The working principle of the cyclone two-stroke engine in this embodiment is as follows:

[0043] After the starter 38 starts the flywheel 31, one of the combustion cylinder pistons runs upward and compresses the natural air stored in its cylinder. When the fuel piston 7-2 crosses and closes the air inlet 24, before the fuel piston 7-2 approaches the top dead center, the fuel injector 20 injects fuel into the combustion chamber of the cylinder. Due to the injection angle and the restriction of the annular protrusion of the cylinder head 21, the mixed fuel and air are also basically limited to the enclosure that is about to be buckled together up and down, that is, when the fuel piston 7-2 approaches the top dead center, the external air inlet 24 closed by the fuel piston 7-2 is opened due to the upward movement of the fuel piston 7-2. Under the action of the natural air pressure from the air filter 55 outside, the purified air enters the crankcase 2. Since the crankcases 2 corresponding to the two fuel pistons 7-2 are independently sealed, their respective air pressures and air volumes are different. At this time, the spark plug 19 of the fuel cylinder described above ignites in time, and the ignited mixed fuel and air burn and expand, pushing the fuel piston 7-2 downward to do work. After the piston moves downward, the high-pressure gas also leaks along the involute and the reserved gap outside the flange and is compressed, but there is not much fuel and air in the air, so it is heated and expanded at the same time, and together with the high-pressure gas in its center, it pushes the piston downward to do work. As we know, when the fuel piston 7-2 moves downward, it closes the external air inlet 24 and starts to compress the air in the crankcase 2. Until the fuel piston 7-2 reaches the bottom dead center, the upper air inlet 24 closed by the fuel piston 7-2 is opened due to the downward movement of the fuel piston 7-2. The compressed air in the crankcase 2 enters the fuel cylinder along the bottom air inlet 24 through the air inlet channel. Since the exhaust valve 18 of this cylinder has been opened at this time, the high-pressure exhaust gas is discharged from the upper exhaust valve 18. The air compressed by the downward movement of the fuel piston 7-2 in the crankcase 2 enters the fuel cylinder to sweep away the residual exhaust gas in the fuel cylinder together. When the exhaust valve 18 on the cylinder head 21 is closed, the fuel piston 7-2 returns to enter the next round of compression ignition and work stage. The two fuel pistons 7-2 alternate to do work one up and one down, and at this time the engine enters the low-pressure conventional work stage. Since the engine has entered the working operation stage, the two air pump cylinders connected coaxially continuously supply high-pressure air to the high-pressure gas cylinder connected to the outside of the body during the continuous operation of the engine until the required air pressure is reached. Therefore, this engine can do work with its own low pressure and can independently complete the work of filling the high-pressure gas cylinder 10 without external auxiliary inflation. When working at low pressure normally, the exhausted exhaust gas enters the turbine 45 through the exhaust pipe. The turbine 45 converts the residual kinetic energy of the exhaust gas into mechanical energy to drive the supercharger 54 to operate. When the supercharger 54 operates at high speed, it supercharges the purified air from the air filter 55 and supplies the supercharged air to the air pump and also supplies the supercharged air to the air entering the crankcase 2 of the engine for low-pressure primary work.

[0044] Exemplarily, such as Figure 2As shown, a high-pressure gas cylinder 10 is provided on the outer body of the engine. It is connected to the exhaust port 59 of the air pump cylinder through a gas guide pipe 37, and a safety exhaust valve is provided thereon. The high-pressure gas cylinder 10 leads out the gas guide pipe 37 and is connected to the column shaft gas valve. An electromagnetic switch 12 is provided on the gas guide pipe 37, and a flow-regulating air pressure pull rod line 22 is provided on the turning handle of the column shaft gas valve, that is Figure 1 One end of the flow-regulating air pressure pull rod line 22 described in Figure 1 is controlled by a traction spring 9, and the other end is also as

[0045] As Figure 2 shown, two high-pressure gas guide pipes 37 are respectively led out by rotating the valve and are connected to the pressing air valves provided on the respective cylinder heads 21. Each pressing air valve respectively leads out two branch gas guide pipes and is connected to the jet nozzle. The jet nozzle can be mechanical or electromagnetic.

[0046] As Figure 2 shown, the cyclone two-stroke engine of the embodiment is further provided with a camshaft 16 and a rocker arm 15 pulley controlled thereby. A power flywheel 31, on which a starter 38 is engaged. An oil filter 44. A gear-type oil pump 43, and a distributor 69 is driven through a bevel gear 42. Two high-voltage electric wires are led out from the distributor 69, and it is connected to a spark plug 19 implanted on the cylinder head 21.

[0047] As Figure 3 shown, the power flywheel 31 can be seen on the main body.

[0048] In a possible embodiment, as Figure 1 、 Figure 2 and Figure 3 shown, the number of air pump cylinders is multiple, and multiple air pump cylinders are arranged side by side; the number of fuel cylinders is multiple, and multiple fuel cylinders are arranged side by side.

[0049] Exemplarily, the number of air pump cylinders is 2, and the number of fuel cylinders is also 2. The 2 air pump cylinders are arranged in parallel, the 2 fuel cylinders are arranged in parallel, and the air pump cylinders and the fuel cylinders are also arranged in parallel. Such a setting makes the overall structure of the cyclone two-stroke engine more compact and occupies a smaller space volume.

[0050] Exemplarily, the number of air pump cylinders can also be 3, and the number of fuel cylinders can also be 3. In this case, the number of air pump cylinders is equal to the number of fuel cylinders.

[0051] Exemplarily, the number of air pump cylinders can also be 3, and the number of fuel cylinders can also be 4. In this case, the number of air pump cylinders is not equal to the number of fuel cylinders. Since the settings of the number of air pump cylinders and the number of fuel cylinders are not specifically limited, they will not be elaborated here.

[0052] Exemplarily, since the cyclone two-stroke engine of this embodiment has two fuel cylinders standing upright and working side by side, as Figure 1 shown, the two link rods 3 are sealed by a partition in the crankcase 2, and an intermediate partition is added on both sides. An oil circulation port is opened at the bottom of the partition in the air pump crankcase 2, and this port is sealed by the immersion of the oil level. And an oil sump 32 is also provided at the bottom of the two-stroke engine, which is convenient for the replacement and discharge of the oil.

[0053] In a possible embodiment, as Figure 1 and Figure 4 shown, both the first raised rim 8 and the second raised rim 29 are annular protrusions.

[0054] Specifically, since the first raised rim 8 is an annular protrusion, therefore, the upper top surface of the first raised rim 8 has an inner edge and an outer edge. As Figure 4 shown, in the vertical direction, the outer edge of the first raised rim 8 in this embodiment is higher than the inner edge. Correspondingly, the inner edge of the second raised rim 29 is lower than the outer edge.

[0055] Specifically, the first raised rim 8 can also be set such that in the vertical direction, the inner edge of the first raised rim 8 in this embodiment is higher than the outer edge. Correspondingly, the outer edge of the second raised rim 29 is lower than the inner edge.

[0056] Specifically, the first raised rim 8 can also be set such that in the vertical direction, the outer edge of the first raised rim 8 in this embodiment is equal to the inner edge. Correspondingly, the inner edge of the second raised rim 29 is equal to the outer edge.

[0057] Exemplarily, for the first raised rim 8, a groove with a width of 5 mm and an angle greater than 135° following the air flow direction is opened every 1 cm on the annular rim, and the bottom depth reaches the top of the piston. This groove is not vertically downward, but has an angle greater than 90° and is inclined, that is, the outer empty bottom angle of the groove is 60°. The purpose of setting these several grooves is that the annular air flow fills the periphery, that is, the part where the first raised rim 8 and the second raised rim 29 are buckled, and then enters the bottom of the piston inside the rim along these several grooves in a cycle, so that the mixed oil and gas still remain at the top near the spark plug 19. When the spark plug 19 ignites the mixed oil and gas, the high-pressure gas can also flow back along this groove into the pressurized pure air outside, making the heat baking effect more ideal.

[0058] In a possible embodiment, as Figure 1 and Figure 4As shown in the figure, the power assembly includes: a connecting rod 3, disposed below the air pump piston 7-1 and the fuel piston 7-2, and connected to both the air pump piston 7-1 and the fuel piston 7-2; a crankshaft 1, disposed below the connecting rod 3 and connected to the crankshaft 1; a flywheel 31, disposed on the side wall of the engine block 6 and connected to the crankshaft 1; a starter 38, disposed outside the engine block 6 and meshed with the upper gear ring of the flywheel 31 to provide driving force.

[0059] Exemplarily, as Figure 4 shown, in the crankcase 2 of the cyclone two-stroke engine in this embodiment, the crankshaft 1 is connected to the piston via the connecting rod 3. From Figure 4 it can also be seen that in Figure 1 the fuel piston 7-2 in the cylinder barrel 5 described has a first convex peripheral edge 8, and there is also a second downward convex peripheral edge 29 under the cylinder head 21, which will not be elaborated here. An exhaust valve 18, an injector 20, and a spark plug 19 are provided at the center inside the downward peripheral edge of the cylinder head 21. It can also be seen Figure 1 outside the peripheral edge of the cylinder head 21 described in Figure 4 A high-pressure jet nozzle 28, a push-button air flow switch 30, and a pneumatic flow control valve 27 are implanted in the circular slit groove to control the traction flow control air pressure pull rod line 22, the rocker arm 15, and the camshaft 16 on the pneumatic valve flow control valve. The high-pressure gas cylinder 10 connected via the air duct 37 can also be seen from

[0060] Exemplarily, as Figure 3 shown, on the right end face of the engine block 6, it can be seen that a synchronous toothed belt 46 is hung on the engine main power pulley 66. The synchronous toothed belt 46 synchronously drives the fuel injection pump pulley 57, the camshaft pulley 64, and the oil pump pulley 65. And a driven pulley 68 is also provided on the side of the camshaft pulley 64. A transmission belt 56 is led out from the driven pulley 68, and the transmission belt 56 drives the fan 49 and the water pump 47 in the same engine body. From Figure 3 it can also be seen that a radiator 50 is provided on the side of the engine, further indicating that the two-stroke engine in this embodiment is a water-cooled engine. It can be seen from the synchronous toothed belt that several tension pulleys 67 are buckled on it.

[0061] Exemplarily, the main power pulley 66 drives the synchronous toothed belt 46, and thus the synchronous toothed belt 46 drives the generator pulley 63. The fuel injection pump pulley 57, the camshaft pulley 64, and the oil pump pulley 62. Several tension pulleys 67 are also pressed on the synchronous toothed belt 46. From Figure 3 it can also be seen that another transmission belt 56 is connected to another pulley groove concentric with the main power pulley 66. The transmission belt 5 drives the fan 49 and the water pump 47.

[0062] In a possible embodiment, as Figure 4As shown, the high-pressure jet nozzle 28 is inserted through the cylinder head 21 and connected to the cylinder head 21, and the high-pressure jet nozzle 28 is disposed between the first raised edge 8 and the cylinder wall of the fuel cylinder; the push-button air flow switch 30 is disposed above the cylinder head 21 and is in communication with the high-pressure jet nozzle 28; the rotary column type valve switch 36 is disposed between the high-pressure gas cylinder 10 and the push-button air flow switch and is connected to both the high-pressure gas cylinder 10 and the push-button air flow switch 30.

[0063] Exemplarily, the handle of this rotary column type valve switch 36 is connected to the flow-regulating air pressure pull rod wire 22 and is dragged by it. This flow-regulating air pressure pull rod wire 22 is connected to the accelerator pedal in the driver's cab. As the accelerator pedal sinks and increases, it increases accordingly, and decreases as it decreases. When the accelerator pedal returns to its original position, the flow-regulating air pressure pull rod wire 22 also returns to its original position, and the rotary column type valve switch 36 closes to stop the air supply.

[0064] Exemplarily, as Figure 1 shown, a camshaft 16 is provided above the body shell 6, and the four rocker arms 15 thereon are controlled by this camshaft 16. Two of the rocker arms 15 control the push-button air flow switch 30 on the corresponding cylinder head 21. The push-button air flow switch 30 is connected to the total intake air switch valve controlled by the flow-regulating air pressure pull rod wire 22 through a high-pressure air duct 37. Each push-button air flow switch 30 provided for each cylinder leads out two branch air ducts 37 and is connected to the high-pressure jet nozzle 28 implanted in the cylinder head 21. The high-pressure jet nozzle 28 can be set as a mechanical type or an electromagnetic control type, and one of them is selected. The other two rocker arms 15 press and control the exhaust valve 18. That is to say, this push-button air flow switch 30 is controlled by the rocker arm 15 thereon and the camshaft 16 at the other end of the rocker arm 15. When the contact point of the rocker arm 15 presses down, the valve opens, and when the contact point of the rocker arm 15 rises and leaves, this valve closes to stop the air supply.

[0065] In a possible embodiment, as Figure 1 and Figure 4 shown, the number of the high-pressure jet nozzles 28 is two, and the jet directions of the two high-pressure jet nozzles 28 are horizontally arranged, and the jet directions of the two high-pressure jet nozzles 28 are opposite.

[0066] Exemplarily, the air outlets 61 of the two high-pressure jet nozzles 28 are not downwardly arranged but horizontally arranged to eject the high-pressure air flow. Two high-pressure jet nozzles 28 for one fuel cylinder occupy their respective semi-circles and eject in the same direction, clockwise or counterclockwise. Under the circular specification, with the two high-pressure air flows in the same direction, the high-pressure air flow will form a downward-rotating cylindrical air vortex along the cylinder wall of the fuel cylinder under the separation of the first raised edge 8 and the second raised edge 29.

[0067] In a possible embodiment, as Figure 4As shown in the figure, the fuel cylinder further includes: an intake through-hole 4, which is opened on the first side wall of the fuel cylinder to connect the inside of the fuel cylinder with the outside; an intake inlet 26, which is opened inside the second side wall of the fuel cylinder, and the second side wall is disposed opposite to the first side wall; an air inlet 24, which is opened inside the second side wall of the fuel cylinder, is connected to the intake inlet 26, and is disposed above the intake inlet 26.

[0068] Exemplarily, the working cylinder in this embodiment is different from the conventional two-stroke engine cylinder in that a closed cover 25 is provided outside the air inlet 24. The closed cover 25 is an oblate outer cover with a closed upper end. The width of the closed cover 25 is slightly larger than the transverse inlet diameter of the air inlet 24. There is a gap of about 5 mm between the closed cover 25 and the outer wall of the cylinder barrel 5 as the intake passage. The lower end of the closed cover 25 is flush with the bottom of the cylinder and leaves the air inlet 24, thereby solving the sealing problem caused by the water-cooling cycle.

[0069] In a possible embodiment, as Figure 3 shown, an injector 20 is inserted through the cylinder head 21 and is connected to the cylinder head 21; a common rail 58 is disposed outside the engine block 6 and is connected to the injector 20 through a pipeline; a fuel injection pump 60 is disposed below the common rail 58 and is connected to the common rail 58 through a pipeline; a flow control valve 62 is disposed on the side of the fuel injection pump 60 and is connected to the fuel injection pump 60 through a pipeline; a filter assembly is disposed on the side of the flow control valve 62 and is connected to the flow control valve 62 through a pipeline; a dual-format fuel tank 51 is disposed outside the engine housing and is connected to the filter assembly through a pipeline.

[0070] Exemplarily, as Figure 3 shown, it can be seen outside the engine block 6 that the dual-format fuel tank 51 is a fuel tank with a partition. The left side is a gasoline tank, and the right partition is an alcohol fuel tank. Two conduits are led out from the two fuel tanks. One is an oil conduit, and the other is an alcohol conduit. After passing through their respective filters and converging on the flow control valve 62, then a fuel conduit is connected to the fuel injection pump 60. The fuel injection pump 60 is then connected to the common rail 58 through a fuel conduit. The common rail 58 then leads out two high-pressure fuel conduits to be connected to the injector 20, and a return fuel pipe is led out and connected to the alcohol fuel tank. The fuel supply system of this machine is basically the same as that of the engines on the conventional market, and will not be elaborated too much.

[0071] In a possible embodiment, as Figure 3 shown, the filter assembly includes: an alcohol filter 53, which is disposed on the side of the flow control valve 62 and is connected to the dual-format fuel tank 51 through a pipeline; a fuel filter 52, which is disposed adjacent to the alcohol filter 53 and is connected to the dual-format fuel tank 51 through a pipeline.

[0072] Exemplarily, an alcohol filter 53 and a fuel filter 52 are provided between the flow control valve 62 and the dual-format fuel tank 51. Correspondingly, the alcohol filter 53 is connected to the alcohol fuel tank in the dual-format fuel tank 51 through a pipeline, and the fuel filter 52 is connected to the fuel tank in the dual-format fuel tank 51 through a pipeline. In this way, the fuel in the dual-format fuel tank 51 enters the engine after being filtered, avoiding impurities from entering and ensuring the safe use of the fuel.

[0073] In a possible embodiment, as Figure 1 and Figure 3 shown, the cyclone two-stroke engine further includes: a manual switch 11, disposed between the high-pressure gas cylinder 10 and the flow control valve 62 and connected to the high-pressure gas cylinder 10 through a pipeline; an electromagnetic switch 12, disposed between the manual switch 11 and the flow control valve 62 and connected to the manual switch 11; and a pressure regulating valve 13, disposed between the electromagnetic switch 12 and the flow control valve 62 and connected to both the electromagnetic switch 12 and the flow control valve 62.

[0074] Exemplarily, as Figure 1 shown, a high-pressure gas cylinder 10 is provided outside the engine body shell 6 connected to the air pump. It is connected to the rotary column type valve switch 36 through the main air duct 37. A manual switch 11, an electromagnetic switch 12, and a pressure regulating valve 13 are provided on the main air duct 37. A valve pull rod line is pulled on the column shaft of the rotary column type valve switch 36, and the other end of this pull rod line is connected to the accelerator pedal in the driver's cab.

[0075] Exemplarily, during the inflation process of the high-pressure gas cylinder 10, the pipeline through which the high-pressure gas cylinder 10 outputs high-pressure air to the engine is controlled to be closed by the electromagnetic switch 12 thereon. Therefore, no matter how the accelerator pedal is depressed, the flow control pressure pull rod line 22 pulls the rotary valve to open the valve, and at this time, no high-pressure air enters because its source is blocked. As long as the electromagnetic switch 12 is closed, the engine operates in a low-pressure working state, which is also the first-stage low-pressure working mode of this engine. The inflation of the high-pressure gas cylinder 10 is completed in this first-stage low-pressure working mode. When the high-pressure gas cylinder 10 reaches the upper limit of the required air pressure value, it can enter the second-stage high-pressure working cyclone supercharging and heat baking mode.

[0076] To enter the secondary cyclone booster heating mode, when the high-pressure gas cylinder 10 reaches the required air pressure value, the high-pressure gas pipeline 14 between the high-pressure gas cylinder 10 and the regulating valve 62 controlled by the pull rod line of the engine intake rotary switch is opened by the electromagnetic switch 12, and the high-pressure air is discharged from the high-pressure gas cylinder 10. As the foot pedal is pressed, the regulating air pressure pull rod line 22 pulls the rotating column valve switch 36. The high-pressure gas passes through the switch valve and enters the charging stage at this time, that is, the piston enters the final compression stage. The camshaft 16 drives the push-type airflow switch 30 controlled by it under the rocker arm 15, and the high-pressure air is sprayed into the cylinder through the high-pressure jet nozzle 28. As mentioned above, because the air outlet 61 of the high-pressure jet nozzle 28 is arranged in the downward annular airflow cavity 23, the airflow from the air outlet 61 of the high-pressure jet nozzle 28 is a flat high-pressure airflow that is horizontally and slightly downwardly shot out, and forms a cylindrical cyclone along the cylinder wall in an annular downward direction. The fuel is then dispersed toward the lower edge, so when the piston moves upward and approaches the top dead center, when the upper and lower edges are about to be fastened, the high-pressure fuel is dispersed and basically locked in the buckle box formed by the upper and lower edges, that is, the internal area of ​​the first raised edge 8 and the second raised edge 29 is the high-pressure mixed oil and gas, and the external area is the high-pressure cyclone, which retains basically pure air. When the spark plug 19 ignites the high-pressure oil and gas in the inner edge ring of the ignition box, the high-pressure gas pushes the piston downward, and as the gap of the close connection opens, the hot and compressed gas also rushes into the pure air of the outer ring, causing it to expand due to the heat, and merges with the high-pressure gas to push the piston downward to do work until the bottom dead center. The two pistons work back and forth alternately, and the engine also drives the coaxial motion air pump at the same time, replenishing the amount of air consumed by the cyclone pressurization consumed by each cylinder, so that the high-pressure gas cylinder 10 is always kept within the required normal air pressure range.

[0077] For example, Figure 3 As shown, the exhaust pipe is connected to two cylinder exhaust ports 59, which are connected to the turbocharger below. The cyclonic two-stroke engine in this embodiment is different from the conventional engine in that the turbine 45 is not only linked to the booster fan 54, but the booster fan 54 is also connected to the air filter 55. The booster fan 54 not only provides purified boosted air (air delivery pipe) for the pumping cylinder, but also passes through the engine through the air guide 37, and also provides the boosted air required for low-pressure work to the combustion cylinder.

[0078] In addition, since the air pump coaxially linked to the fuel engine is essentially no different from the pumps on the market, the two cylinders of this air pump are only responsible for delivering high-pressure air to the high-pressure gas cylinder 10 outside the body, and there is nothing special about it, so it will not be described in detail here.

[0079] In the present utility model, unless otherwise clearly specified and defined, a first feature being "on" or "under" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "over" and "on top of" a second feature may mean that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. A first feature being "under", "beneath" and "underneath" a second feature may mean that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0080] Although the embodiments of the present utility model have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present utility model. Those of ordinary skill in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present utility model.

Claims

1. A cyclonic two-stroke engine, characterized in that: include: Body shell; A high-pressure gas cylinder is arranged outside the machine body shell; An air pump cylinder is disposed in the machine body shell and is connected to the high-pressure gas cylinder; A fuel cylinder, disposed adjacent to the air pump cylinder and connected to the high-pressure gas cylinder; A fuel piston is disposed inside the fuel cylinder; An air pump piston is disposed inside the air pump cylinder; A first raised peripheral edge is provided at the upper end of the fuel piston and is connected to the fuel piston; A cylinder head, disposed at the top of the fuel cylinder and connected to the engine shell; A second raised edge is disposed below the cylinder head and connected to the cylinder head, and is disposed corresponding to the first raised edge in the vertical direction; The power assembly is arranged at the bottom of the body shell and is connected to both the air pump piston and the fuel piston.

2. The cyclonic two-stroke engine according to claim 1, characterized in that: The number of the air pump cylinders is multiple, and the multiple air pump cylinders are arranged side by side; The number of the fuel cylinders is multiple, and the multiple fuel cylinders are arranged side by side.

3. The cyclonic two-stroke engine according to claim 1, characterized in that: The first raised edge and the second raised edge are both annular protrusions.

4. The cyclonic two-stroke engine according to claim 1, characterized in that: The power assembly comprises: A chain rod is disposed below the air pump piston and the fuel piston and is connected to both the air pump piston and the fuel piston; A crankshaft, disposed below the chain rod and connected to the chain rod; A flywheel, disposed on a side wall of the engine housing and connected to the crankshaft; The starter is arranged outside the machine body shell and is meshedly connected with the upper gear ring of the flywheel.

5. The cyclonic two-stroke engine according to claim 1, characterized in that: Also includes: A high-pressure air jet nozzle is passed through the cylinder head and connected to the cylinder head, and the high-pressure air jet nozzle is arranged between the first raised edge and the cylinder wall of the fuel cylinder; A push-type airflow switch is arranged above the cylinder head and is connected to the high-pressure air nozzle; The rotary column valve switch is arranged between the high-pressure gas cylinder and the push-type airflow switch, and is connected to both the high-pressure gas cylinder and the push-type airflow switch.

6. The cyclonic two-stroke engine according to claim 5, characterized in that: The number of the high-pressure air nozzles is two, and the air jet directions of the two high-pressure air nozzles are arranged horizontally, and the air jet directions of the two high-pressure air nozzles are opposite.

7. The cyclonic two-stroke engine according to claim 1, characterized in that: The fuel cylinder also includes: An air intake hole is provided on the first side wall of the fuel cylinder so that the inside of the fuel cylinder is connected with the outside; An air inlet is provided inside a second side wall of the fuel cylinder, the second side wall being arranged opposite to the first side wall; The air inlet is opened inside the second side wall of the fuel cylinder, is communicated with the air inlet, and is arranged above the air inlet.

8. The cyclonic two-stroke engine according to claim 1, characterized in that: Also includes: A fuel injection nozzle is disposed through the cylinder head and connected to the cylinder head; A common rail, arranged outside the engine housing and connected to the fuel injection nozzle via a pipeline; A fuel injection pump is disposed below the common rail and connected to the common rail through a pipeline; A flow regulating valve is arranged on the side of the fuel injection pump and connected to the fuel injection pump through a pipeline; A filter assembly is arranged on the side of the flow regulating valve and connected to the flow regulating valve through a pipeline; The dual-format fuel tank is arranged outside the casing and connected to the filter assembly through a pipeline.

9. The cyclonic two-stroke engine according to claim 8, characterized in that: The filter assembly comprises: An alcohol filter is arranged on the side of the flow regulating valve and connected to the dual-format fuel tank through a pipeline; A fuel filter is arranged adjacent to the alcohol filter and connected to the dual-format fuel tank through a pipeline.

10. The cyclonic two-stroke engine according to claim 8, characterized in that: Also includes: A manual switch is arranged between the high-pressure gas cylinder and the flow regulating valve and connected to the high-pressure gas cylinder through a pipeline; An electromagnetic switch is disposed between the manual switch and the flow regulating valve and is connected to the manual switch; The pressure regulating valve is arranged between the electromagnetic switch and the flow regulating valve, and is connected to both the electromagnetic switch and the flow regulating valve.

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