Squish flow combustion chamber of two-stroke engine with good cooling effect

Abstract

The squish flow combustion chamber of the two-stroke engine is good in cooling effect and comprises a cylinder body, a combustion cavity is formed in the cylinder body, a cylinder cover is fixedly installed on the top of the cylinder body, a first heat dissipation ring is arranged on the surface of the cylinder cover in a sleeved mode, and a second heat dissipation ring is arranged on the surface of the cylinder body in a sleeved mode. A cooling liquid circulation channel is formed in the cylinder body and surrounds the combustion cavity, and the left side and the right side of the top of the cylinder cover are fixedly connected with a liquid inlet pipe and a liquid outlet pipe correspondingly. The squish flow combustion chamber has the advantage of being good in cooling effect, and solves the problems that in the using process of an existing squish flow combustion chamber of a two-stroke engine, a large amount of heat on the combustion chamber cannot be conveniently and effectively taken away, local overheating is easily caused, the overall cooling efficiency is reduced, the engine is difficult to keep working within a proper temperature range, and the service life is prolonged. And the service life is shortened.

Description

Technical Field

[0001] The utility model relates to the technical field of internal combustion engines, in particular to a squish flow combustion chamber of a two-stroke engine with good cooling effect. Background Art

[0002] The squish combustion chamber of a two-stroke engine is a specially designed combustion chamber structure that aims to improve the gas flow and combustion efficiency within the engine. In a traditional two-stroke engine, the four processes of intake, compression, combustion and exhaust are completed within two strokes of a piston. The squish combustion chamber optimizes this process, especially the gas exchange and combustion process, through its specific internal geometry.

[0003] The Chinese patent application No. 201721073711.7 discloses a squeeze flow combustion chamber of a two-stroke engine, which is composed of a spark plug, a piston and a cylinder top in a cylinder body; the inner side of the cylinder top away from the exhaust port is shaped like a convex curved surface, and the inner side of the cylinder top close to the exhaust port is shaped like a concave curved surface; the convex curved surface and the concave curved surface extend to intersect at the highest point, and the intersection is processed with an arc transition; a plane is inclinedly arranged on the outer side of the cylinder top, and the plane and the convex curved surface are located on the same side; a circular hole is opened on the plane, and an internal thread is arranged on the inner wall of the circular hole, and the internal thread cooperates with the external thread on the spark plug, and the spark plug is arranged on the circular hole. In the above manner, the utility model can enhance the fluidity of the airflow, the airflow is relatively more dispersed, the fuel gas can be burned more fully, and the space volume occupied is smaller.

[0004] The existing two-stroke engine's squeeze flow combustion chamber is not convenient for effectively removing a large amount of heat from the combustion chamber during use, which easily causes local overheating, reduces the overall cooling efficiency, makes it difficult to keep the engine operating within a suitable temperature range, and reduces its service life. Utility Model Content

[0005] The utility model aims to provide a squeeze flow combustion chamber of a two-stroke engine with good cooling effect, which has the advantage of good cooling effect and solves the problem that the squeeze flow combustion chamber of the existing two-stroke engine is not convenient for effectively taking away a large amount of heat from the combustion chamber during use, which easily causes local overheating, reduces the overall cooling efficiency, makes it difficult to keep the engine working within a suitable temperature range, and reduces its service life.

[0006] To achieve the above object, the utility model provides the following technical solution: a squish flow combustion chamber of a two-stroke engine with good cooling effect, comprising a cylinder block, a combustion chamber is provided inside the cylinder block, a cylinder head is fixedly installed on the top of the cylinder block,

[0007] The surface of the cylinder head is sleeved with a first heat dissipation ring, and the surface of the cylinder body is sleeved with a second heat dissipation ring;

[0008] A coolant circulation channel is provided inside the cylinder body, and the coolant circulation channel surrounds the combustion chamber. A liquid inlet pipe and a liquid outlet pipe are fixedly connected to the left and right sides of the top of the cylinder head respectively, and the liquid inlet pipe and the liquid outlet pipe are both connected to the coolant circulation channel. A flow regulator connected to the top of the liquid inlet pipe is fixedly connected, and a liquid inlet connected to the top of the flow regulator is fixedly connected, and a liquid outlet head connected to the top of the liquid outlet pipe is fixedly connected.

[0009] As a preferred squeezing combustion chamber of a two-stroke engine with good cooling effect of the utility model, a mixture air inlet is opened on the right side of the cylinder body, and an exhaust gas outlet is opened on the left side of the cylinder body, and the mixture air inlet and the exhaust gas outlet are both connected to the combustion chamber.

[0010] As a preferred squish flow combustion chamber of a two-stroke engine with good cooling effect according to the utility model, a piston is movably connected inside the combustion chamber.

[0011] As a preferred embodiment of the squish flow combustion chamber of a two-stroke engine with good cooling effect of the utility model, a spark plug is installed at the center of the cylinder head, and a temperature sensor is fixedly installed at the bottom of the cylinder head.

[0012] As a preferred embodiment of the utility model of a squeeze flow combustion chamber of a two-stroke engine with good cooling effect, the number of the cylinder head and the second heat dissipation ring is several, and the cylinder head and the second heat dissipation ring are both made of aluminum alloy.

[0013] As a preferred embodiment of the utility model, a squish flow combustion chamber of a two-stroke engine with good cooling effect is provided with a mounting seat at the bottom of the cylinder body surface.

[0014] As a preferred squeezing flow combustion chamber of a two-stroke engine with good cooling effect of the utility model, a flow chamber connected with a liquid inlet pipe and a liquid inlet is provided on the right side of the inner cavity of the flow regulator, a micro motor is fixedly connected to the left side of the inner cavity of the flow regulator, a screw is fixed to the output shaft of the micro motor through a coupling, a sealing plate is threadedly sleeved on the surface of the screw, a slide rail is fixedly connected to the top and bottom of the sealing plate, a limit frame is slidably connected to the surface of the slide rail, the limit frame is fixedly connected to the inner wall of the flow regulator, a sealing plate is sleeved on the surface of the sealing plate, the sealing plate is fixedly connected to the inner wall of the flow regulator, and the right end of the sealing plate extends to the inner cavity of the flow chamber.

[0015] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0016] 1. The utility model provides a mixture air inlet, which facilitates the mixture to enter the combustion chamber. The spark plug ignites the mixture, and the mixture burns inside the combustion chamber, driving the piston to move up and down, driving the piston to work, and the exhaust gas is discharged through the exhaust gas outlet. The first heat dissipation ring and the second heat dissipation ring absorb the heat on the cylinder head and the cylinder body, and conduct the heat to the air.

[0017] 2. The utility model provides a coolant circulation channel, which can facilitate the coolant in the cooling system to enter the cylinder body and absorb the heat generated during the operation of the cylinder body. The coolant first enters the coolant circulation channel through the liquid inlet, the flow regulator and the liquid inlet pipe. The coolant circulates inside the coolant circulation channel for one cycle to absorb heat. After absorbing heat, it flows back to the cooling system through the liquid outlet pipe and the liquid outlet head. The flow regulator can adjust the amount of coolant entering, and the temperature sensor can detect the working temperature of the cylinder body. Controlling the liquid inlet amount means that the coolant flow rate can be adjusted according to the actual working conditions of the engine to achieve more sophisticated thermal management. Reducing the coolant flow rate at low load can speed up the engine warm-up speed and improve fuel economy. Increasing the coolant flow rate under high load or high temperature conditions can effectively prevent overheating and protect engine components. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is the main axonometric drawing of the utility model;

[0019] Figure 2 This is a front cross-sectional view of the utility model;

[0020] Figure 3 This is a front and cross-sectional view of the liquid inlet head, flow regulator and liquid inlet pipe of the utility model.

[0021] In the figure: 1. cylinder block; 2. mixture air inlet; 3. liquid outlet head; 4. spark plug; 5. liquid inlet; 6. flow regulator; 7. cylinder head; 8. first heat dissipation ring; 9. second heat dissipation ring; 10. mounting seat; 11. liquid outlet pipe; 12. piston; 13. combustion chamber; 14. exhaust gas outlet; 15. liquid inlet pipe; 16. temperature sensor; 17. coolant circulation channel; 18. flow chamber; 19. blocking plate; 20. sealing plate; 21. slide rail; 22. limit frame; 23. micro motor; 24. screw rod. DETAILED DESCRIPTION

[0022] See also Figure 1-Figure 3 A squish flow combustion chamber of a two-stroke engine with good cooling effect comprises a cylinder block 1, a combustion chamber 13 is arranged inside the cylinder block 1, and a cylinder head 7 is fixedly installed on the top of the cylinder block 1.

[0023] A sealing gasket is provided at the connection between the cylinder block 1 and the cylinder head 7.

[0024] Furthermore, a mixture gas inlet port 2 is opened on the right side of the cylinder body 1 , and an exhaust gas outlet 14 is opened on the left side of the cylinder body 1 . Both the mixture gas inlet port 2 and the exhaust gas outlet 14 are connected to the combustion chamber 13 .

[0025] Furthermore, the combustion chamber 13 is movably connected to a piston 12 .

[0026] Furthermore, a spark plug 4 is installed at the center of the cylinder head 7 , and a temperature sensor 16 is fixedly installed at the bottom of the cylinder head 7 .

[0027] By setting the mixture inlet 2, the mixture can be easily entered into the combustion chamber 13, the spark plug 4 ignites the mixture, and the mixture burns inside the combustion chamber 13, driving the piston 12 to move up and down, driving the piston 12 to work, and the exhaust gas is discharged through the exhaust gas outlet 14. The first heat dissipation ring 8 and the second heat dissipation ring 9 absorb the heat on the cylinder head 7 and the cylinder body 1, and conduct the heat to the air.

[0028] Furthermore, a first heat dissipation ring 8 is sleeved on the surface of the cylinder head 7 , and a second heat dissipation ring 9 is sleeved on the surface of the cylinder block 1 .

[0029] Furthermore, there are several cylinder heads 7 and second heat sink rings 9, and both the cylinder heads 7 and the second heat sink rings 9 are made of aluminum alloy.

[0030] Furthermore, a mounting seat 10 is provided at the bottom of the surface of the cylinder body 1 .

[0031] By providing the mounting seat 10 , the cylinder block 1 can be easily mounted and fixed.

[0032] Furthermore, a coolant circulation channel 17 is opened inside the cylinder body 1, and the coolant circulation channel 17 surrounds the combustion chamber 13. The left and right sides of the top of the cylinder head 7 are respectively fixedly connected with a liquid inlet pipe 15 and a liquid outlet pipe 11. The liquid inlet pipe 15 and the liquid outlet pipe 11 are both connected to the coolant circulation channel 17. The top of the liquid inlet pipe 15 is fixedly connected to a flow regulator 6 connected thereto, the top of the flow regulator 6 is fixedly connected to a liquid inlet 5 connected thereto, and the top of the liquid outlet pipe 11 is fixedly connected to a liquid outlet head 3 connected thereto.

[0033] By setting up the coolant circulation channel 17, the coolant in the cooling system can be easily entered into the cylinder block 1 to absorb the heat generated during the operation of the cylinder block 1. The coolant first enters the coolant circulation channel 17 through the liquid inlet 5, the flow regulator 6 and the liquid inlet pipe 15. The coolant circulates inside the coolant circulation channel 17 for one cycle to absorb heat. After absorbing heat, it flows back to the cooling system through the liquid outlet pipe 11 and the liquid outlet head 3. The flow regulator 6 can adjust the amount of coolant entering, and the temperature sensor 16 can detect the working temperature of the cylinder block 1. Controlling the liquid intake means that the coolant flow rate can be adjusted according to the actual working conditions of the engine to achieve more sophisticated thermal management. Reducing the coolant flow rate at low load can speed up the engine warm-up speed and improve fuel economy. Increasing the coolant flow rate under high load or high temperature conditions can effectively prevent overheating and protect engine components.

[0034] Furthermore, a flow chamber 18 connected to the liquid inlet pipe 15 and the liquid inlet port 5 is provided on the right side of the inner cavity of the flow regulator 6, and a micro motor 23 is fixedly connected to the left side of the inner cavity of the flow regulator 6. A screw rod 24 is fixed to the output shaft of the micro motor 23 through a coupling. A sealing plate 19 is threadedly sleeved on the surface of the screw rod 24. A slide rail 21 is fixedly connected to the top and bottom of the sealing plate 19. A limit frame 22 is slidably connected to the surface of the slide rail 21. The limit frame 22 is fixedly connected to the inner wall of the flow regulator 6. A sealing plate 20 is sleeved on the surface of the sealing plate 19. The sealing plate 20 is fixedly connected to the inner wall of the flow regulator 6. The right end of the sealing plate 19 extends to the inner cavity of the flow chamber 18.

[0035] During the operation of the flow regulator 6, the output shaft of the micro motor 23 drives the screw 24 to rotate, and the screw 24 drives the sealing plate 19 to slide inside the sealing plate 20, so that the sealing plate 19 moves inside the flow chamber 18, changing the liquid flow speed inside the flow chamber 18. During the movement of the sealing plate 19, the slide rail 21 is driven to slide inside the limit frame 22, and the slide rail 21 and the limit frame 22 limit the sealing plate 19 to enable it to move stably.

[0036] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A squish combustion chamber of a two-stroke engine with good cooling effect, comprising a cylinder block (1), a combustion chamber (13) is provided inside the cylinder block (1), a cylinder head (7) is fixedly mounted on the top of the cylinder block (1), and is characterized in that: The surface of the cylinder head (7) is sleeved with a first heat dissipation ring (8), and the surface of the cylinder body (1) is sleeved with a second heat dissipation ring (9); A coolant circulation channel (17) is provided inside the cylinder body (1), and the coolant circulation channel (17) surrounds the combustion chamber (13). A liquid inlet pipe (15) and a liquid outlet pipe (11) are fixedly connected to the left and right sides of the top of the cylinder head (7), respectively. The liquid inlet pipe (15) and the liquid outlet pipe (11) are both connected to the coolant circulation channel (17). The top of the liquid inlet pipe (15) is fixedly connected to a flow regulator (6) connected thereto, the top of the flow regulator (6) is fixedly connected to a liquid inlet (5) connected thereto, and the top of the liquid outlet pipe (11) is fixedly connected to a liquid outlet head (3) connected thereto.

2. A squish combustion chamber of a two-stroke engine with good cooling effect according to claim 1, characterized in that: The right side of the cylinder body (1) is provided with a mixed gas inlet (2), and the left side of the cylinder body (1) is provided with an exhaust gas outlet (14), and both the mixed gas inlet (2) and the exhaust gas outlet (14) are connected to the combustion chamber (13).

3. A squish combustion chamber of a two-stroke engine with good cooling effect according to claim 1, characterized in that: The combustion chamber (13) is movably connected to a piston (12).

4. A squish combustion chamber of a two-stroke engine with good cooling effect according to claim 1, characterized in that: A spark plug (4) is installed at the center of the cylinder head (7), and a temperature sensor (16) is fixedly installed at the bottom of the cylinder head (7).

5. A squish combustion chamber of a two-stroke engine with good cooling effect according to claim 1, characterized in that: The cylinder head (7) and the second heat dissipation ring (9) are provided in a plurality of numbers, and the cylinder head (7) and the second heat dissipation ring (9) are both made of aluminum alloy material.

6. A squish combustion chamber of a two-stroke engine with good cooling effect according to claim 1, characterized in that: A mounting seat (10) is provided at the bottom of the surface of the cylinder body (1).

7. A squish combustion chamber of a two-stroke engine with good cooling effect according to claim 1, characterized in that: A flow chamber (18) communicating with a liquid inlet pipe (15) and a liquid inlet port (5) is provided on the right side of the inner cavity of the flow regulator (6); a micro motor (23) is fixedly connected to the left side of the inner cavity of the flow regulator (6); a screw rod (24) is fixedly connected to the output shaft of the micro motor (23) via a coupling; a sealing plate (19) is threadedly sleeved on the surface of the screw rod (24); a slide rail (21) is fixedly connected to the top and bottom of the sealing plate (19); a limit frame (22) is slidably connected to the surface of the slide rail (21); the limit frame (22) is fixedly connected to the inner wall of the flow regulator (6); a sealing plate (20) is sleeved on the surface of the sealing plate (19); the sealing plate (20) is fixedly connected to the inner wall of the flow regulator (6); the right end of the sealing plate (19) extends to the inner cavity of the flow chamber (18).

Images