A supercharged rotary engine based on air and water cooling

Abstract

The utility model relates to a kind of based on air cooling and water cooling's supercharged rotor engine, a kind of based on air cooling and water cooling's supercharged rotor engine, front end cover and rear end cover are set in cylinder body both ends, the setting of front end cover, rear end cover and the fin one on cylinder body, fin two, fin three and in the eccentric shaft one end setting centrifugal fan, one side of centrifugal fan is located in centrifugal fan shell and is equipped with booster impeller, booster impeller is installed in eccentric shaft, can compress cooling air, improve inflation efficiency, still be equipped with engine on eccentric shaft, heat can be taken away when engine operates;The engine is connected with main pulley, water pump pulley is equipped below main pulley, water pump is set in water pump pulley, forms water cooling system, reduces the temperature of combustion chamber wall surface.The utility model combines air cooling system with water cooling system and supercharging system, so that the engine obtains better cooling.

Description

Technical Field

[0001] This utility model belongs to the field of rotary engine technology, specifically relating to a turbocharged rotary engine based on air cooling and water cooling. Background Technology

[0002] Currently, in the field of rotary engines, the overall cooling solutions are mainly divided into air cooling and water cooling. Air cooling is mostly forced air cooling, which mainly utilizes airflow or a cooling fan to cool the engine. Air cooling is mainly used in smaller rotary engines. Its advantages include a simple layout and structure, which helps improve the engine's power-to-weight ratio. Its disadvantages include insufficient stability, unpredictable airflow, and unsuitability for high-power rotary engines (currently, almost no rotary engines above 30kW are air-cooled). Water cooling is mainly forced water cooling, where the engine is equipped with a water pump, and water channels are installed inside the engine block to cool the engine using forced water flow. It is mainly used in larger rotary engines. Its advantages include good heat dissipation, but its disadvantages include a complex layout and difficulty in reducing engine weight.

[0003] In the current engine field, it is difficult to achieve breakthroughs in the service life and power of low-power air-cooled rotary engines, mainly due to cooling issues. Since most are air-cooled, as power increases, the cooling air outlet temperature quickly exceeds 200 degrees Celsius, and the cylinder block temperature is even higher. This leads to increased thermal deformation of internal components, reduced operational stability, and limited output power. Especially in many applications, the engine requires extensive ground testing after startup before takeoff, which is extremely disadvantageous for air-cooled engines because a stationary engine cannot receive convective cooling air, causing rapid overheating and other problems. Secondly, rotary engines are essentially two-stroke engines, as the engine performs a power stroke only once every 360-degree crankshaft rotation. Therefore, rotary engines always suffer from intake and exhaust overlap, a problem that becomes more pronounced at high speeds, affecting intake efficiency. Turbocharging is one way to address this issue. Utility Model Content

[0004] The purpose of this utility model is to solve the above-mentioned problems. This application proposes a turbocharged rotary engine based on air cooling and water cooling to solve the problems of difficult heat dissipation and low intake efficiency of rotary engines.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a turbocharged rotary engine based on air cooling and water cooling, comprising a cylinder block, an eccentric shaft, and a centrifugal fan. The cylinder block has a front end cover and a rear end cover at both ends. The eccentric shaft passes through the cylinder block and the front and rear end covers. A centrifugal fan is fitted onto one end of the eccentric shaft and connected to the cylinder block. An engine is located at the other end of the eccentric shaft and connected to a main pulley. A water pump pulley is located below the main pulley. The main pulley and the water pump pulley are connected by a belt to form a transmission mechanism. An injector is also provided on the cylinder block, and a spark plug is located below the injector on the cylinder block. The centrifugal fan is enclosed by a centrifugal fan housing. A booster impeller is located on one side of the centrifugal fan housing inside the centrifugal fan housing. The booster impeller is mounted on an eccentric shaft. An air outlet is located on the outside of the centrifugal fan housing.

[0006] Furthermore: four triangular cooling vents are provided at the center of the side of the front cover, several heat sinks and a water inlet are provided on the outer side of the front cover, and a sensor is provided on the upper side of the front cover near the engine.

[0007] Furthermore: four triangular cooling vents are provided at the center of the side of the rear end cover, and several heat sinks and a water outlet are provided on the rear end cover.

[0008] Furthermore: the cylinder body is provided with an air inlet, an exhaust outlet and several heat sinks, and a cylinder body water chamber is provided on one side of the cylinder body. The cylinder body is connected to a centrifugal fan through an air inlet pipe. One end of the air inlet pipe is the cylinder body air inlet connected to the cylinder body, and the other end is the centrifugal fan air outlet connected to the centrifugal fan.

[0009] Furthermore: the water pump pulley includes a water pump, the water pump is provided with a water pump inlet and a water pump outlet, the water pump inlet is connected to the cooling water tank, the water pump outlet is connected to the front cover inlet, the front cover inlet is connected to the cylinder water chamber, the cylinder water chamber is connected to the rear cover outlet, and the rear cover outlet is connected to the cooling water tank.

[0010] Furthermore: the engine drives the main pulley to rotate, and the main pulley drives the water pump pulley to move.

[0011] Furthermore, the centrifugal fan, front cover, rear cover, cylinder block, engine, and main pulley are all coaxially designed and mounted on an eccentric shaft.

[0012] Furthermore, the heat sink one, heat sink two, and heat sink three are all arranged axially along the eccentric axis.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: This invention combines air cooling and water cooling, integrating the advantages of both to achieve better engine cooling. Water cooling lowers the temperature inside the engine block, while air cooling increases the airflow speed within the engine block. The combined effect of air and water cooling further improves cooling efficiency. Water cooling at critical cylinder block locations significantly reduces the temperature of the combustion chamber walls, ensuring the engine meets basic heat dissipation requirements even when stationary. Simultaneously, a turbocharger impeller pressurizes the cooling air, which then enters the cylinder block, improving charging efficiency and effectively enhancing engine power and thermal efficiency. This better leverages the power-to-weight ratio advantage of the rotary engine and reduces the negative impacts of exhaust overlap.

[0014] In this invention, the centrifugal fan, booster impeller, and water pump are all driven by the movement of an eccentric shaft, resulting in a compact structure that eliminates the need for an additional power source, thus achieving energy conservation. The placement of heat sinks (1, 2, and 3) on the front and rear covers and cylinder block ensures rapid cooling of the components as the engine moves forward or backward. The airflow passing over these heat sinks carries away heat. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only for more clearly illustrating the technical solutions in the embodiments of this utility model or the prior art. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the front cover structure of this utility model; Figure 3 This is a schematic diagram of the cylinder cover structure of this utility model; Figure 4 This is a schematic diagram of the rear end cover structure of this utility model; Figure 5 This is a flowchart of the water cooling heat dissipation process of this utility model; Figure 6 This is a schematic diagram of the internal airflow direction of the air-cooled heat dissipation of this utility model; Figure 7 This is a schematic diagram of the external airflow direction of the air-cooled heat dissipation of this utility model; Figure 8 This is a schematic diagram showing the connection between the centrifugal fan and the cylinder of this utility model; Figure 9 Schematic diagram of cooling airflow for a centrifugal fan; Figure 10 This is a schematic diagram of the intake pipe structure; Figure 11 This is a schematic diagram of the booster impeller structure; In the diagram: 1-Front end cover, 101-Ventilation port one, 102-Radiator fin one, 103-Front end cover inlet, 2-Rear end cover, 201-Ventilation port two, 202-Radiator fin two, 203-Rear end cover outlet, 3-Injector, 4-Spark plug, 5-Cylinder block, 501-Air inlet, 502-Radiator fin three, 503-Exhaust port, 504-Cylinder block water chamber, 6-Engine, 7-Water pump pulley, 701-Water pump inlet, 702-Water pump outlet, 8-Main pulley, 9-Sensor, 10-Booster impeller, 11-Eccentric shaft, 12-Intake pipe, 1201-Cylinder block air inlet, 1202-Centrifugal fan outlet, 13-Centrifugal fan, 1301-Centrifugal fan housing, 1302-Housing outlet, 14-Cooling water tank. Detailed Implementation

[0017] To enable those skilled in the art to better understand and implement the technical solution of this utility model, the present utility model will be further described below with reference to specific embodiments. However, the embodiments described are only for illustration and are not intended to limit the present utility model.

[0018] like Figures 1-11 The turbocharged rotary engine shown includes a cylinder block 5, a front cover 1, a rear cover 2, an eccentric shaft 11, a centrifugal fan 13, etc., and the eccentric shaft 11 is arranged through the cylinder block 5 and the front and rear covers.

[0019] Four triangular cooling vents 101 are provided at the center of the side of the front cover 1. Several heat sinks 102 and a front cover water inlet 103 are provided on the outer side of the front cover 1. A sensor 9 is provided on the upper side of the front cover 1 near the engine 6.

[0020] The rear cover 2 has four triangular cooling vents 201 at the center of its side, and the rear cover 2 has several heat sinks 202 and a water outlet 203.

[0021] A centrifugal fan 13 is fitted onto one end of the eccentric shaft 11. The centrifugal fan 13 is connected to the cylinder 5 to form an air-cooling system. A centrifugal fan housing 1301 is provided on the outside of the centrifugal fan 13 to enclose it. A booster impeller 10 (the booster impeller is the booster system of this rotor engine) is provided on one side of the centrifugal fan 13 inside the centrifugal fan housing 1301. The booster impeller 10 is mounted on the eccentric shaft 11. An air outlet 1302 is provided on the outside of the centrifugal fan housing 1301. When the eccentric shaft 11 rotates, it drives the centrifugal fan 13 to rotate, which generates negative pressure inside the centrifugal fan housing. The operation of the centrifugal fan does not require additional power.

[0022] The air-cooling system also includes heat sink 101, heat sink 201, heat sink 3 502 installed on the front cover 1, rear cover 2, and cylinder 5, as well as 4 triangular cooling vents 101 and 4 triangular cooling vents 201.

[0023] The heat sink 102, heat sink 202, and heat sink 302 are all arranged along the axial direction of the eccentric shaft 11 and are arranged in a ring around the front and rear end covers and cylinder block. The heat sinks can transfer heat to the external environment. When the engine is in a forward or reverse state, the generated airflow passes through the heat sink 102, heat sink 202, and heat sink 302 located outside the end cover and cylinder block, which can quickly carry away the heat, thereby achieving cooling of the surface of the parts.

[0024] Both the triangular cooling vent 101 and the triangular cooling vent 201 are connected to the inside of the cylinder. When a negative pressure is generated inside the centrifugal fan housing 1301, the cooling air can not only enter the cylinder 5 from both ends of the eccentric shaft 11, but also enter the cylinder 5 from one side of the front cover 1 and the rear cover 2 to cool the components inside the cylinder 5.

[0025] The other end of the eccentric shaft 11 is equipped with an engine 6, which is connected to the main pulley 8. A water pump pulley 7 is located below the main pulley 8 to form a water cooling system. The main pulley 8 and the water pump pulley 7 are connected by a belt to form a transmission mechanism. The water pump pulley 7 includes a water pump with a water pump inlet 701 and a water pump outlet 702. The water pump inlet 701 is connected to the cooling water tank 14, and the water pump outlet 702 is connected to the front cover inlet 103. The front cover inlet 103 is connected to the cylinder block water chamber 504, which is connected to the rear cover outlet 203. The rear cover outlet 203 is connected to the cooling water tank 14. Figure 5As shown, the arrow indicates the circulation process of the cooling water. After the engine 6 starts, the main pulley 8 drives the water pump pulley 7 to move. The water pump pumps the cooling water through the water pump outlet 702 into the front cover inlet 103. The water flows through the front cover inlet 103 into the cylinder block water chamber 504. The water flowing out of the cylinder block water chamber 504 enters the rear cover outlet 203 and then flows into the coolant tank 14. The coolant tank 14 cools the water flowing back and then returns to the water pump inlet 701 for circulation.

[0026] This utility model's air-cooling system, combined with a water-cooling system, cools the air surrounding the cylinder 5. The air-cooling system can also increase the airflow speed inside the cylinder 5, further improving cooling efficiency.

[0027] The cylinder 5 is provided with an air inlet 501 and an exhaust port 503. The combustion chamber is located inside the cylinder 5. The air inlet 501 is connected to the centrifugal fan 13 through an air inlet pipe 12. The two ends of the air inlet pipe 12 are the cylinder air inlet 1201 and the centrifugal fan air outlet 1202, respectively. Due to the presence of a booster impeller 10, air can be compressed, increasing the air pressure and density, thereby sending more air into the cylinder 5 through the air inlet pipe 12 to achieve the purpose of boosting the cylinder 5. Since the booster impeller 10 is located inside the centrifugal fan housing 1301, the compressed air flows through the housing air outlet 1302 to the centrifugal fan air outlet 1202, and then through the air inlet pipe 12 and the cylinder air inlet 1201 into the combustion chamber of the cylinder 5 to complete the heat dissipation effect.

[0028] Preferably, the cylinder block 5 also includes an injector 3 and a spark plug 4. The injector 3 is used to inject fuel into the engine intake manifold or combustion chamber, and the spark plug 4 is used to ignite the mixture by generating a high-voltage electric spark when the engine 6 is running, thereby generating power through fuel combustion.

[0029] The front cover 1 is equipped with a sensor 9 on the side above the engine 6, which is used to detect various status parameters of the engine 6, such as temperature, pressure, and speed.

[0030] Working principle Implementation of an air-cooled system: An air-cooled system mainly consists of two circulation channels, internal and external, such as... Figure 6 and Figure 7 As shown, where Figure 6 This is a flowchart of the internal air-cooling system. The main components cooled are the eccentric shaft, rotor, bearings, and bushings. When the engine is running, it drives... Figure 11 The rotation of the booster impeller creates negative pressure inside the centrifugal fan casing, which draws cooling air into the engine from the eccentric shaft ends and the triangular cooling vents on the front cover, thereby achieving the effect of cooling internal components. Figure 7The external cooling cycle is shown, which mainly relies on the heat sinks distributed on the front and rear end covers and cylinder block. When the engine is moving forward or backward, the airflow generated carries away the heat as it passes through the heat sinks located outside the end covers and cylinder block, thereby cooling the surface of the parts.

[0031] Implementation of water cooling system: such as Figure 5 As shown, when the engine is running, the main pulley drives the water pump pulley to rotate via the belt. The water pump pumps the cooling water through the water pump outlet into the front cover inlet. The water flows through the cylinder block water chamber, the rear cover outlet, the radiator, and then back to the water pump inlet to complete the circulation.

[0032] Implementation of the supercharging system: As shown in Figures 8-11, the supercharging system operates by directly passing cooling air from the centrifugal fan outlet through... Figure 10 The intake pipe shown connects the centrifugal fan outlet to the cylinder block intake port, so that the pressurized cooling air directly enters the cylinder block to achieve the pressurization function.

[0033] All content not described in detail in this utility model is prior art.

[0034] The above description is merely a preferred embodiment of this utility model and is not limited to the description in the specification and embodiments. Therefore, all equivalent changes or modifications made to the structure, features, and principles described in the claims of this utility model should be included within the scope of this utility model patent application.

Claims

1. A turbocharged rotary engine based on air cooling and water cooling, comprising a cylinder block (5), an eccentric shaft (11), and a centrifugal fan (13), characterized in that: The cylinder body (5) is provided with a front end cover (1) and a rear end cover (2) at both ends. The eccentric shaft (11) passes through the cylinder body (5) and the front and rear end covers. A centrifugal fan (13) is sleeved on one end of the eccentric shaft (11). The centrifugal fan (13) is connected to the cylinder body (5). An engine (6) is provided on the other end of the eccentric shaft (11). The engine (6) is connected to the main pulley (8). A water pump pulley (7) is provided below the main pulley (8). The main pulley (8) and the water pump pulley (7) are connected by a belt to form a transmission mechanism. An injector (3) is also provided on the cylinder body (5). A spark plug (4) is provided on the cylinder body (5) below the injector (3). The centrifugal fan (13) is provided with a centrifugal fan housing (1301) on the outside, which encloses it. A booster impeller (10) is provided on one side of the centrifugal fan (13) inside the centrifugal fan housing (1301). The booster impeller (10) is mounted on an eccentric shaft (11). An air outlet (1302) is provided on the outside of the centrifugal fan housing (1301).

2. A turbocharged rotary engine based on air cooling and water cooling according to claim 1, characterized in that: The front cover (1) has four triangular cooling vents (101) at the center of its side, and several heat sinks (102) and a front cover water inlet (103) are provided on the outer side of the front cover (1). A sensor (9) is provided on the side of the front cover (1) near the engine (6).

3. A turbocharged rotary engine based on air cooling and water cooling according to claim 1, characterized in that: The rear end cover (2) has four triangular cooling vents (201) at the center of its side, and the rear end cover (2) has several heat sinks (202) and a water outlet (203).

4. A turbocharged rotary engine based on air cooling and water cooling according to claim 1, characterized in that: The cylinder (5) is provided with an air inlet (501), an exhaust port (503) and several heat sinks (502). A cylinder water chamber (504) is provided on one side of the cylinder (5). The cylinder (5) is connected to a centrifugal fan (13) through an air inlet pipe (12). One end of the air inlet pipe (12) is the cylinder air inlet (1201), and the other end is the centrifugal fan air outlet (1202).

5. A turbocharged rotary engine based on air cooling and water cooling according to claim 1, characterized in that: The water pump pulley (7) includes a water pump, which is provided with a water pump inlet (701) and a water pump outlet (702). The water pump inlet (701) is connected to the cooling water tank (14), the water pump outlet (702) is connected to the front cover inlet (103), the front cover inlet (103) is connected to the cylinder water chamber (504), the cylinder water chamber (504) is connected to the rear cover outlet (203), and the rear cover outlet (203) is connected to the cooling water tank (14).

6. A turbocharged rotary engine based on air cooling and water cooling according to claim 1, characterized in that: The engine (6) drives the main pulley (8) to rotate, and the main pulley (8) drives the water pump pulley (7) to move.

7. A turbocharged rotary engine based on air cooling and water cooling according to claim 1, characterized in that: The centrifugal fan (13), front cover (1), rear cover (2), cylinder block (5), engine (6), and main pulley (8) are designed to be coaxial and are all located on the eccentric shaft (11).

8. A turbocharged rotary engine based on air cooling and water cooling according to claim 2, characterized in that: The heat sinks 1 (102), 2 (202), and 3 (502) are all arranged along the axial direction of the eccentric shaft (11).

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