Two-stroke engine with high thermal efficiency

Abstract

The invention relates to a two-stroke engine with high thermal efficiency, which comprises two main cylinders, an auxiliary cylinder and an auxiliary piston, the two main cylinders are arranged side by side, the auxiliary cylinder is arranged on the rear side between the two main cylinders, the main cylinders are communicated with the auxiliary cylinder through an exhaust pipe, and the auxiliary piston is arranged on the auxiliary cylinder. A piston capable of moving up and down is installed in the lower end of the main cylinder, an auxiliary piston capable of moving up and down is installed in the lower end of the auxiliary cylinder, a main cylinder crankshaft in butt joint with the piston is installed below the main cylinder, and an auxiliary cylinder crankshaft in butt joint with the auxiliary piston is installed below the auxiliary cylinder. A power output shaft is arranged at one end of the main cylinder crankshaft, and a main cylinder gear is installed at the end, provided with the power output shaft, of the main cylinder crankshaft. The device has the characteristics of improving the heat efficiency, reducing the oil consumption, ensuring sufficient combustion of fuel, secondarily recovering heat, improving the output power of the engine and the like.

Description

Technical Field

[0001] The invention relates to the technical field of engines, in particular to a two-stroke engine with high thermal efficiency. Background Art

[0002] Compared with four-stroke engines, the two-stroke engines on the market are relatively simple in structure, without complex valve trains and lubrication systems, low in manufacturing cost, lower in failure rate, more convenient in maintenance, and more convenient and flexible in use. When the crankshaft speed is the same, the number of times a two-stroke engine does work per unit time is twice that of a four-stroke engine, and the power is 1.5-1.7 times that of a four-stroke engine, with higher power, better dynamics, and less vibration. There is a lot of room for application in the fields of ships, aerospace, special vehicles, small mechanical equipment, motorcycles, etc. However, two-stroke engines also have disadvantages: insufficient exhaust, incomplete scavenging, low fresh air concentration, low fuel combustion efficiency, and part of the fresh mixed gas is discharged together with the exhaust gas, resulting in low thermal efficiency and relatively high fuel consumption. In order to solve the above technical problems, it is necessary to improve the engine. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a two-stroke engine with high thermal efficiency, which has the characteristics of improving thermal efficiency, reducing fuel consumption, ensuring full combustion of fuel, secondary heat recovery, and improving engine output power.

[0004] The fuel of the two-stroke engine described in the technical solution is not limited to diesel, gasoline, formaldehyde, etc. Each unit of the engine is composed of two main cylinders and one auxiliary cylinder. A complete engine may be composed of one or more units.

[0005] The technical solution adopted by the present invention to solve its technical problems is: to provide a two-stroke engine with high thermal efficiency, including a main cylinder, an auxiliary cylinder and an auxiliary piston. There are two main cylinders arranged side by side. An auxiliary cylinder is arranged on the rear side between the two main cylinders. The main cylinder and the auxiliary cylinder are connected through an exhaust pipe. A piston that moves up and down is installed in the lower end of the main cylinder. An auxiliary piston that moves up and down is installed in the lower end of the auxiliary cylinder. A main cylinder crankshaft connected to the piston is installed below the main cylinder. An auxiliary cylinder crankshaft connected to the auxiliary piston is installed below the auxiliary cylinder. One end of the main cylinder crankshaft is a power output shaft. A main cylinder gear is installed on one end of the main cylinder crankshaft with a power output shaft. An auxiliary cylinder gear meshing with the main cylinder gear is installed on the auxiliary cylinder crankshaft.

[0006] In the technical solution, two main cylinders are provided to drive two pistons, and the two pistons are used to push the main cylinder crankshaft. The rotation of the main cylinder crankshaft can drive the power output shaft to rotate. An auxiliary cylinder is provided to recover excess heat discharged during the operation of the main cylinder. By providing the main cylinder and the auxiliary piston, the auxiliary cylinder can reuse the excess heat, so that the auxiliary piston can operate. The auxiliary piston can push the auxiliary cylinder crankshaft, and the auxiliary cylinder crankshaft rotates. The main cylinder gear is driven by the auxiliary cylinder gear, and the main cylinder gear can provide a new output force, so that the output of the power output shaft is increased.

[0007] As a supplement to the present technical solution, the main cylinder is provided with a main cylinder exhaust valve, the auxiliary cylinder is symmetrically provided with two auxiliary cylinder intake valves, and the exhaust pipe is used to connect the main cylinder exhaust valve and the auxiliary cylinder intake valve.

[0008] In the technical solution, the main cylinder exhaust valve and the auxiliary cylinder intake valve are provided to transport the excess hot air discharged from the main cylinder to the auxiliary cylinder, so that the auxiliary cylinder can reuse the excess heat.

[0009] As a supplement to the present technical solution, an auxiliary cylinder exhaust valve is provided in the middle of the upper end of the auxiliary cylinder, and the residual hot air is discharged by providing the auxiliary cylinder exhaust valve.

[0010] As a supplement to the technical solution, the master cylinder is provided with a water injection port connected to the internal cavity.

[0011] As a supplement to the present technical solution, a main cylinder air inlet is provided at one side of the upper end of the main cylinder. The main cylinder air inlet is provided to ensure air entry so that the combustion chamber can fully burn.

[0012] Beneficial effect: The present invention relates to a two-stroke engine with high thermal efficiency, which drives two pistons by arranging two main cylinders, and pushes the main cylinder crankshaft by the two pistons. The main cylinder crankshaft rotates to drive the power output shaft to rotate. An auxiliary cylinder is arranged to recover the excess heat discharged during the operation of the main cylinder. The main cylinder and the auxiliary piston are arranged so that the auxiliary cylinder can recycle the excess heat, so that the auxiliary piston can operate, and the auxiliary piston can push the auxiliary cylinder crankshaft. The auxiliary cylinder crankshaft rotates, and the main cylinder gear is driven by the auxiliary cylinder gear. The main cylinder gear can provide a new output force, so that the output of the power output shaft is increased. The engine has the characteristics of improving thermal efficiency, reducing fuel consumption, ensuring full combustion of fuel, recovering heat for a second time, and improving engine output power. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural view of the present invention;

[0014] Figure 2 It is a simplified structural diagram of the master cylinder crankshaft at the master cylinder of the present invention;

[0015] Figure 3 It is a simplified structural diagram of the auxiliary cylinder crankshaft at the auxiliary cylinder of the present invention;

[0016] Figure 4 It is the running state diagram of the first step of the running of the present invention;

[0017] Figure 5 It is the operation state diagram of the second step of operation when the present invention is running;

[0018] Figure 6 It is the running state diagram of the third step of the running of the present invention;

[0019] Figure 7 It is the running state diagram of the fourth step of the running of the present invention.

[0020] Diagram: 1. Auxiliary cylinder, 2. Auxiliary piston, 3. Main cylinder, 4. Piston, 5. Main cylinder exhaust valve, 6. Exhaust pipe, 7. Auxiliary cylinder intake valve, 8. Auxiliary cylinder exhaust valve, 9. Auxiliary cylinder crankshaft, 10. Main cylinder crankshaft, 11. Auxiliary cylinder gear, 12. Main cylinder gear, 13. Power output shaft, 14. Water filling port, 15. Main cylinder intake port. DETAILED DESCRIPTION

[0021] The present invention will be further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms fall within the scope limited by the appended claims of the application equally.

[0022] The embodiment of the present invention relates to a two-stroke engine with high thermal efficiency, such as Figure 1As shown in FIG. 3 , it comprises a main cylinder 3, an auxiliary cylinder 1 and an auxiliary piston 2. There are two main cylinders 3 arranged side by side. An auxiliary cylinder 1 is arranged at the rear side between the two main cylinders 3. The main cylinder 3 and the auxiliary cylinder 1 are connected through an exhaust pipe 6. A piston 4 that moves up and down is installed in the lower end of the main cylinder 3. An auxiliary piston 2 that moves up and down is installed in the lower end of the auxiliary cylinder 1. A main cylinder crankshaft 10 that is connected to the piston 4 is installed below the main cylinder 3. An auxiliary cylinder crankshaft 9 that is connected to the auxiliary piston 2 is installed below the auxiliary cylinder 1. One end of the main cylinder crankshaft 10 is a power output shaft 13. A main cylinder gear 12 is installed on one end of the main cylinder crankshaft 10 that is provided with the power output shaft 13. An auxiliary cylinder gear 11 that meshes with the main cylinder gear 12 is installed on the auxiliary cylinder crankshaft 9.

[0023] In the technical solution, two main cylinders 3 are provided to drive two pistons 4, and the two pistons 4 are used to push the main cylinder crankshaft 10. The rotation of the main cylinder crankshaft 10 can drive the power output shaft 13 to rotate. The auxiliary cylinder 1 is provided to recover the excess heat discharged during the operation of the main cylinder 3. By providing the main cylinder 3 and the auxiliary piston 2, the auxiliary cylinder 1 can reuse the excess heat, so that the auxiliary piston 2 can operate, and the auxiliary piston 2 can push the auxiliary cylinder crankshaft 9. The auxiliary cylinder crankshaft 9 rotates, and the main cylinder gear 12 is driven by the auxiliary cylinder gear 11. The main cylinder gear 12 can provide a new output force, so that the output of the power output shaft 13 is increased.

[0024] As a supplement to the present technical solution, the main cylinder 3 is provided with a main cylinder exhaust valve 5, the auxiliary cylinder 1 is symmetrically provided with two auxiliary cylinder intake valves 7, and the exhaust pipe 6 is used to connect the main cylinder exhaust valve 5 and the auxiliary cylinder intake valve 7.

[0025] In the present technical solution, the main cylinder exhaust valve 5 and the auxiliary cylinder intake valve 7 are provided to transport the excess hot air discharged from the main cylinder 3 to the auxiliary cylinder 1, so that the auxiliary cylinder 1 can reuse the excess heat.

[0026] As a supplement to the present technical solution, an auxiliary cylinder exhaust valve 8 is provided in the middle of the upper end of the auxiliary cylinder 1, and the residual hot air is discharged by providing the auxiliary cylinder exhaust valve 8.

[0027] As a supplement to the present technical solution, the master cylinder 3 is provided with a water injection port 14 connected to the internal cavity.

[0028] As a supplement to the present technical solution, a main cylinder air inlet 15 is provided on one side of the upper end of the main cylinder 3. The main cylinder air inlet 15 is provided to ensure air entry so that the combustion chamber can fully burn.

[0029] Example

[0030] When this technical solution is running, the first step is as follows Figure 4 As shown: the piston 4 of the left main cylinder 3 moves upward to compress the intake air; the auxiliary cylinder intake valve 7 of the auxiliary cylinder 1 is opened, the auxiliary cylinder exhaust valve 8 is closed, and the water injection port 14 is opened, sucking the exhaust gas and water of the piston 4 of the right main cylinder 3 and moving downward to do work; the right main cylinder 3 moves downward to do work and exhaust, and the exhaust gas after combustion enters the auxiliary cylinder 1;

[0031] The second step is Figure 5 As shown: the main cylinder 3 on the left runs to the top dead center; the two auxiliary cylinder intake valves 7 of the auxiliary cylinder 1 are closed, the water injection port 14 is closed, the auxiliary cylinder exhaust valve 8 is opened, and the auxiliary cylinder 1 moves upward to discharge exhaust gas; the main cylinder 3 on the right runs to the bottom dead center and is ready to take in air;

[0032] The third step is Figure 6 As shown: the main cylinder 3 on the left moves downward to do work and exhaust, and discharges the exhaust gas after combustion into the auxiliary cylinder 1; the auxiliary cylinder 1 and the auxiliary cylinder intake valve 7 connected to the main cylinder 3 on the left are opened, the auxiliary cylinder exhaust valve 8 is closed, and the water injection port 14 is opened to suck in the exhaust gas and water in the left cylinder 3 and move downward to do work; the main cylinder 3 on the right moves upward to compress and inhale air;

[0033] Step 4 Figure 7 As shown: the main cylinder 3 located on the left reaches the bottom dead center and is ready to take in air; the two auxiliary cylinder intake valves 7 of the auxiliary cylinder 1 are closed, the water injection port 14 is closed, the auxiliary cylinder exhaust valve 8 is opened, and the auxiliary cylinder 1 discharges exhaust gas upward; the main cylinder 3 located on the right runs to the top dead center.

[0034] The above is a detailed introduction to a two-stroke engine with high thermal efficiency provided by the present application. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea. At the same time, for those skilled in the art, according to the idea of ​​the present application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A two-stroke engine with high thermal efficiency, characterized in that: The invention comprises a main cylinder (3), an auxiliary cylinder (1) and an auxiliary piston (2). The main cylinders (3) are two in total and arranged side by side. An auxiliary cylinder (1) is arranged at the rear side between the two main cylinders (3). The main cylinder (3) and the auxiliary cylinder (1) are connected via an exhaust pipe (6). A piston (4) is installed in the lower end of the main cylinder (3) and an auxiliary piston (2) is installed in the lower end of the auxiliary cylinder (1). A main cylinder crankshaft (10) connected to the piston (4) is installed on the side of the auxiliary cylinder (1); an auxiliary cylinder crankshaft (9) connected to the auxiliary piston (2) is installed below the auxiliary cylinder (1); one end of the main cylinder crankshaft (10) is a power output shaft (13); a main cylinder gear (12) is installed on one end of the main cylinder crankshaft (10) on which the power output shaft (13) is arranged; and an auxiliary cylinder gear (11) meshing with the main cylinder gear (12) is installed on the auxiliary cylinder crankshaft (9).

2. A two-stroke engine with high thermal efficiency according to claim 1, characterized in that: The main cylinder (3) is provided with a main cylinder exhaust valve (5), the auxiliary cylinder (1) is symmetrically provided with two auxiliary cylinder intake valves (7), and the exhaust pipe (6) is used to connect the main cylinder exhaust valve (5) and the auxiliary cylinder intake valve (7).

3. A two-stroke engine with high thermal efficiency according to claim 1, characterized in that: An auxiliary cylinder exhaust valve (8) is provided at the middle of the upper end of the auxiliary cylinder (1).

4. A two-stroke engine with high thermal efficiency according to claim 1, characterized in that: The master cylinder (3) is provided with a water injection port (14) which is in communication with the internal cavity.

5. A two-stroke engine with high thermal efficiency according to claim 1, characterized in that: A master cylinder air inlet (15) is provided on one side of the upper end of the master cylinder (3).

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