Cylinder cover of single-cylinder high-power diesel engine
By incorporating heat exchange channels and fins within the cylinder head and applying a zirconium oxide coating, the problem of thermal deformation of the cylinder head under high-temperature conditions is solved, resulting in improved heat dissipation and structural stability, and enhancing the durability and safety of the diesel engine.
Patent Information
- Application Number
- CN202520328548.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-26
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2035-02-26
AI Technical Summary
In high-temperature environments, the cylinder head of a single-cylinder high-power diesel engine is prone to valve leakage and combustion chamber deformation, affecting durability and engine performance stability.
The system employs a combination of heat exchange channels and heat exchange fins to cool the cylinder head through a cooling medium. A zirconium oxide coating is applied to the cylinder head body surface to reduce thermal stress. Additionally, exhaust channels and filter plugs are installed to filter out foreign objects, enhancing heat dissipation and structural stability.
It improves the heat dissipation of the cylinder head, reduces thermal deformation, enhances the durability of the cylinder head and the performance stability of the engine, and improves the safety and practicality of the device.
Smart Images
Figure CN223894274U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The application relates to the technical field of cylinder heads, in particular to a single-cylinder high-power diesel engine cylinder head. BACKGROUND
[0002] Single-cylinder high-power diesel engines are widely used in agricultural machinery, engineering machinery and small-scale power generation equipment due to their simple structure, high power density and good fuel economy. As one of the core components of diesel engines, the cylinder head bears important functions such as sealing the combustion chamber, installing valves and fuel injectors, and transferring heat. Its performance directly affects the combustion efficiency, reliability and service life of the engine. With the development of diesel engines towards high power and high load, the working environment of the cylinder head becomes more severe, and higher requirements are put forward for the material and structural design.
[0003] At present, the cylinder head of a single-cylinder high-power diesel engine is usually made of cast iron or aluminum alloy material, and the structure generally includes valve seats, combustion chambers, cooling water jackets and intake and exhaust ports. In the prior art, in order to improve the heat dissipation performance of the cylinder head, a complex cooling water channel is designed inside the cylinder head to enhance the flow efficiency of the cooling liquid. In addition, some advanced designs also use double-layer water jackets or high-thermal-conductivity materials to optimize heat management. However, these solutions still have certain limitations when dealing with high-load conditions.
[0004] In traditional cylinder head design, the valve and combustion chamber areas are directly exposed to high-temperature gases, which causes severe thermal deformation, leading to poor valve sealing, combustion chamber deformation, and affecting the durability of the cylinder head and the performance stability of the engine. UTILITY MODEL CONTENT
[0005] The application aims to solve the problem of poor valve sealing and combustion chamber deformation caused by the direct contact of high-temperature gases with the valve and combustion chamber areas, which affects the durability of the cylinder head and the performance stability of the engine. The application provides a single-cylinder high-power diesel engine cylinder head.
[0006] The application adopts the following technical solutions to achieve the above-mentioned purposes:
[0007] The utility model provides a single cylinder high -power diesel engine cylinder cover, including cylinder cover body, the four corners of cylinder cover body are all seted up fixed hole, the bottom of cylinder cover body is seted up combustion chamber, the inner top of combustion chamber is evenly seted up two pairs of valve hole, the inside valve plug of valve hole is connected with the sliding, the one end of valve plug passes through cylinder cover body and is seted up spring, the top of valve plug is fixedly connected with valve top, the inside cylinder cover body is seted up exhaust groove, exhaust groove communicates with both sides two valve holes, the inner top of combustion chamber is seted up ignition hole, the inside ignition hole is fixedly connected with spark plug, the inside cylinder cover body is seted up heat exchange water channel, the periphery of combustion chamber is surrounded around the middle section of heat exchange water channel, the output end of heat exchange water channel is seted up connecting mouth, the inside heat exchange water channel is evenly fixedly connected with a plurality of heat exchange fins, heat exchange fin sets up the periphery of combustion chamber.
[0008] Through the cooperation of the heat exchange water channel and the heat exchange fins, after the diesel inside the combustion chamber is ignited by the spark plug, the valve plug slides along the length direction of the valve hole, and the gas generated by the combustion inside the combustion chamber is discharged through the exhaust groove, so that the cylinder cover body is heated and the temperature rises, and the heat exchange water channel is externally connected with the cooling medium, and the cylinder cover body around the combustion chamber is heated and the temperature rises, and the heat exchange fins effectively increase the contact area between the heat exchange medium and the inner wall of the heat exchange water channel, and the heat exchange effect is improved, so that the heat dissipation effect of the cylinder cover body is effectively improved, the deformation degree of the cylinder cover body caused by heating is reduced, and the durability of the cylinder cover and the performance stability of the engine are improved.
[0009] Further, one end of the cylinder cover body is symmetrically fixedly connected with an oil delivery valve, the output end of the oil delivery valve is symmetrically fixedly connected with an oil delivery head, and the output end of the oil delivery head extends into the combustion chamber.
[0010] Through the cooperation of the oil delivery valve and the oil delivery head, the oil injection area into the combustion chamber through the oil delivery valve is effectively increased, and the combustion efficiency of the device is improved.
[0011] Further, the inside of the exhaust groove is fixedly connected with a filter plug.
[0012] Through the cooperation of the filter plug and the exhaust groove, the gas passing through the inside of the exhaust groove is intercepted and filtered, so as to reduce the entry of dust and other foreign matters in the air into the combustion chamber, reduce the situation of reducing the combustion efficiency of the device, and improve the safety of the device.
[0013] Further, the top of the cylinder head body is provided with a fixing groove, and the bottom of the cylinder head body is provided with a plug groove matched with the fixing groove, the inner bottom of the fixing groove is uniformly provided with a plurality of operation grooves, the inside of the plug groove is provided with an oil pump, the top of the oil pump is provided with a plurality of threaded holes matched with the operation grooves, the inside of the operation groove is provided with a fixing screw screwed with the threaded hole, and the output end of the oil pump extends to the inside of the fixing groove through the cylinder head body.
[0014] By adopting the above technical scheme, the cooperation of the fixing screw and the operation groove and the threaded hole is used, the threaded connection between the fixing screw and the threaded hole is loosened, the oil pump is disconnected with the cylinder head body, the oil pump is disconnected with the inside of the plug groove, and the oil pump does not need to be disassembled, so that foreign matters entering the lubricating pipeline of the cylinder through the oil pump are reduced, and the safety of the device is improved.
[0015] Further, the periphery of the oil pump is uniformly provided with a plurality of guide sliding grooves, and the inner side of the plug groove is uniformly and fixedly connected with a plurality of guide sliding blocks matched with the guide sliding grooves.
[0016] By adopting the above technical scheme, the cooperation of the guide sliding groove and the guide sliding block is used, the connection strength of the oil pump and the cylinder head body is effectively improved, and the installation stability of the oil pump is improved.
[0017] Further, the four sides of the cylinder head body are provided with limiting grooves.
[0018] By adopting the above technical scheme, the cooperation of the limiting groove and the cylinder head body is used, the guide rod is sleeved with the limiting groove, the cylinder head body is quickly aligned with the cylinder, and the practicability of the device is effectively improved.
[0019] Further, the top of the cylinder head body is symmetrically provided with a weight reduction groove.
[0020] By adopting the above technical scheme, the cooperation of the weight reduction groove and the cylinder head body is used, the heat dissipation area of the surface of the cylinder head body is effectively increased, the self weight of the cylinder head body is reduced, and the portability of the device is improved.
[0021] Further, the surface of the cylinder head body is coated with a zirconium oxide coating.
[0022] By adopting the above technical scheme, the cooperation of the zirconium oxide coating is used, the thermal stress of the cylinder head body is effectively reduced, and the durability of the cylinder head body in a high temperature environment is improved.
[0023] In summary, the present application has at least one of the following beneficial effects:
[0024] 1. By using heat exchange passages and heat exchange fins in combination, after the diesel fuel inside the combustion chamber is ignited by the spark plug, the valve plug slides along the length of the valve hole, allowing the gases generated by combustion inside the combustion chamber to be discharged through the exhaust groove. This causes the cylinder head to heat up due to the combustion inside the combustion chamber. At the same time, by setting up heat exchange passages connected to external cooling media, heat exchange occurs between the cylinder head and the heated cylinder head surrounding the combustion chamber. The heat exchange fins effectively increase the contact area between the heat exchange media and the inner wall of the heat exchange passages, improving the heat exchange effect. This effectively improves the heat dissipation of the cylinder head, reduces the degree of deformation caused by heat, and improves the durability of the cylinder head and the performance stability of the engine.
[0025] 2. By setting the fixing screw and the working groove and threaded hole to cooperate, the fixing screw can be loosened to release the threaded connection with the threaded hole, so that the oil pump can be separated from the fixed connection with the cylinder head body. This makes it easier to pull the oil pump out of the slot, so that the oil pump does not need to be disassembled. This reduces the number of foreign objects entering the lubrication pipe of the cylinder through the oil pump and improves the safety of the device. Attached Figure Description
[0026] Figure 1 This is a three-dimensional structural diagram of the main body of the device in this application.
[0027] Figure 2 This is a schematic diagram of the internal structure of the hot water exchange channel in this application.
[0028] Figure 3 This is a schematic diagram of the internal structure of the exhaust channel in this application.
[0029] Figure 4 This is a schematic diagram of the internal structure of the combustion chamber and the operating tank in this application.
[0030] Explanation of reference numerals in the attached figures:
[0031] 1. Cylinder head body; 2. Fixing hole; 3. Combustion chamber; 4. Valve hole; 5. Valve plug; 6. Spring; 7. Valve top; 8. Exhaust groove; 9. Ignition hole; 10. Spark plug; 11. Heat exchanger passage; 12. Connection port; 13. Heat exchanger fins; 14. Fuel supply valve; 15. Fuel supply head; 16. Filter plug; 17. Fixing groove; 18. Slot; 19. Operating groove; 20. Fuel pump; 21. Threaded hole; 22. Fixing screw; 23. Guide slide; 24. Guide slider; 25. Limiting groove; 26. Weight reduction groove. Detailed Implementation
[0032] The following is in conjunction with the appendix Figure 1 —4 provides further detailed description of this application.
[0033] This application discloses a cylinder head for a single-cylinder high-power diesel engine.
[0034] Reference Figure 1 - Figure 4 A single-cylinder high-power diesel engine cylinder head includes a cylinder head body 1. Fixing holes 2 are provided at all four corners of the cylinder head body 1. A combustion chamber 3 is provided at the bottom of the cylinder head body 1. Two pairs of valve holes 4 are evenly provided at the top inner surface of the combustion chamber 3. A valve plug 5 is slidably connected inside the valve hole 4. One end of the valve plug 5 passes through the cylinder head body 1 and is fitted with a spring 6. A valve valve top 7 is fixedly connected to the top of the valve plug 5. Exhaust grooves 8 are symmetrically provided inside the cylinder head body 1. The exhaust grooves 8 communicate with the two valve holes 4 on the same side. An ignition hole 9 is provided at the top inner surface of the combustion chamber 3. A spark plug 10 is fixedly connected inside the ignition hole 9. A heat exchange passage 11 is provided inside the cylinder head body 1. The middle section of the heat exchange passage 11 surrounds the outer periphery of the combustion chamber 3. A connection port 12 is provided at the output end of the heat exchange passage 11. Multiple heat exchange fins 13 are evenly fixedly connected inside the heat exchange passage 11 and are fitted around the outer periphery of the combustion chamber 3.
[0035] Among them, one end of the cylinder head body 1 is symmetrically and fixedly connected to an oil supply valve 14, and the output end of the oil supply valve 14 is symmetrically and fixedly connected to an oil supply head 15, and the output end of the oil supply head 15 extends into the interior of the combustion chamber 3.
[0036] Furthermore, a filter plug 16 is fixedly connected inside the exhaust duct 8.
[0037] In use, after the cylinder head body 1 is aligned and fixed to the cylinder through the fixing hole 2, the combustion chamber 3 and the cylinder crankshaft slide groove form a combustion chamber. When the spark plug 10 ignites the diesel fuel injected into the combustion chamber through the fuel supply valve 14 and fuel supply head 15, pushing the crankshaft to move, the valve plug 5 drives the valve top 7 to push the spring 6 to contract and deform, causing the valve plug 5 to disengage from the seal with the exhaust groove 8, allowing the combustion gases to be discharged through the exhaust groove 8. At this time, due to the combustion of diesel fuel in the combustion chamber and the work done by the crankshaft, the inner wall of the combustion chamber 3 is heated, and the gases are intercepted and filtered by the exhaust groove 8 as they pass through it. To reduce the entry of foreign objects in the air into the combustion chamber through the exhaust channel 8, and by setting up a heat exchange channel 11 to connect to an external cooling medium, the cooling medium passes through the heat exchange channel 11 and exchanges heat with the cylinder head body 1, which is heated and heated inside the combustion chamber 3, through the heat exchange fins 13. Then, it is introduced into the heat exchange channel inside the cylinder through the connection port 12. Thus, the heat exchange fins 13 effectively improve the heat exchange and cooling of the cylinder head body 1, which is rapidly heated around the combustion chamber 3, thereby effectively improving the heat dissipation effect of the device, reducing the degree of deformation of the cylinder head body 1 caused by heat, and improving the durability of the cylinder head and the performance stability of the engine.
[0038] Reference Figure 1 and Figure 3, Figure 4 The cylinder head body 1 has a fixing groove 17 on the top and a slot 18 adapted to the fixing groove 17 on the bottom. Multiple operating grooves 19 are evenly distributed in the inner bottom of the fixing groove 17. An oil pump 20 is inserted into the slot 18. Multiple threaded holes 21 adapted to the operating groove 19 are opened on the top of the oil pump 20. A fixing screw 22 threadedly connected to the threaded hole 21 is inserted into the operating groove 19. The output end of the oil pump 20 passes through the cylinder head body 1 and extends into the interior of the fixing groove 17.
[0039] The oil pump 20 has multiple guide grooves 23 evenly distributed around its periphery, and multiple guide sliders 24 that are adapted to the guide grooves 23 are evenly fixedly connected to the inner side of the slot 18.
[0040] When the cylinder head body 1 needs to be disassembled for maintenance, the fixing screw 22 is loosened manually to disconnect the screw from the threaded hole 21 and disengage it from the inside of the operating groove 19, thereby disconnecting the oil pump 20 from the cylinder head body 1. Then, the cylinder head body 1 is manually pulled away from the cylinder, thereby disengaging the oil pump 20 from the inside of the slot 18. Thus, the oil pump 20 does not need to be disassembled, reducing the risk of foreign objects entering the lubrication pipe of the cylinder through the oil pump 20 and improving the safety of the device.
[0041] Then, when fixing the cylinder head body 1 to the cylinder, the guide slider 24 is inserted into the guide groove 23 by manually pulling the cylinder head body 1, so that the guide slider 24 and the inner wall of the guide groove 23 come into contact. Then, the fixing screw 22 is pulled through the operating groove 19 and forms a threaded connection with the threaded hole 21, thereby realizing the fixed connection between the oil pump 20 and the cylinder head body 1, which improves the connection strength and stability between the oil pump 20 and the cylinder head body 1.
[0042] Reference Figure 1 and Figure 2 Limiting grooves 25 are provided on all four sides of the cylinder head body 1.
[0043] In use, when the cylinder head body 1 is aligned with the cylinder, the cylinder head body 1 is pulled to drive the limiting groove 25 to be fitted onto one end of the guide rod, so that the cylinder head body 1 slides along the length of the guide rod to the top of the cylinder, thereby effectively improving the alignment efficiency between the cylinder head body 1 and the cylinder and improving the practicality of the device.
[0044] Reference Figure 1 and Figure 3 The top of the cylinder head body 1 is symmetrically provided with weight reduction grooves 26.
[0045] In use, the weight reduction groove 26 effectively reduces the weight of the cylinder head body 1, increases the heat dissipation area on the surface of the cylinder head body 1, and improves the practicality of the device.
[0046] Reference Figure 1 and Figure 2 The surface of the cylinder head body 1 is coated with a zirconium oxide coating.
[0047] During use, by coating the surface of the cylinder head body 1 with a zirconium oxide coating, the heat conduction of high-temperature combustion gases to the cylinder head body 1 is effectively reduced, thermal stress is reduced, and the durability of the cylinder head body 1 in high-temperature environments is improved.
[0048] The implementation principle of the single-cylinder high-power diesel engine cylinder head in this embodiment is as follows: First, the cylinder head body 1 is manually pulled to drive the guide slider 24 into the guide groove 23, so that the guide slider 24 abuts against the inner wall of the guide groove 23. Then, the fixing screw 22 is pulled through the operating groove 19 and forms a threaded connection with the threaded hole 21, thereby realizing the fixed connection between the oil pump 20 and the cylinder head body 1. Then, after the cylinder head body 1 is aligned and fixed with the cylinder through the fixing hole 2, the combustion chamber 3 and the cylinder crankshaft are aligned. The chute forms a combustion chamber, and when the spark plug 10 ignites the diesel fuel injected into the combustion chamber through the fuel supply valve 14 and fuel supply head 15, it pushes the crankshaft to move. This causes the valve plug 5 to drive the valve top 7 to push the spring 6 to contract and deform, and causes the valve plug 5 to disengage from the seal with the exhaust groove 8, so that the gas produced by combustion is discharged through the exhaust groove 8. At this time, due to the combustion of diesel fuel in the combustion chamber and the work done by the crankshaft, the inner wall of the combustion chamber 3 is heated and the temperature rises. When the gas passes through the inside of the exhaust groove 8, it is intercepted and filtered by the exhaust groove 8.
[0049] Meanwhile, by setting the external cooling medium of the heat exchange channel 11, the cooling medium passes through the interior of the heat exchange channel 11 and exchanges heat with the cylinder head body 1, which is heated and heated inside the combustion chamber 3, through the heat exchange fins 13. Then, it is introduced into the heat exchange channel inside the cylinder through the connection port 12, thereby effectively improving the heat exchange and cooling of the cylinder head body 1, which is rapidly heated and heated around the combustion chamber 3, by utilizing the heat exchange fins 13.
[0050] Then, when it is necessary to disassemble the cylinder head body 1 for maintenance, the fixing screw 22 is loosened manually, so that the fixing screw 22 is disconnected from the threaded hole 21 and disengaged from the inside of the operating groove 19, thereby disconnecting the oil pump 20 from the cylinder head body 1. Then, the cylinder head body 1 is manually pulled away from the cylinder, so that the oil pump 20 is disengaged from the inside of the slot 18, thus eliminating the need to disassemble the oil pump 20 and reducing the risk of foreign objects entering the lubrication pipe of the cylinder through the oil pump 20.
Claims
1. A cylinder head for a single-cylinder high-power diesel engine, comprising a cylinder head body (1), characterized in that: The cylinder head body (1) has fixing holes (2) at all four corners. A combustion chamber (3) is provided at the bottom of the cylinder head body (1). Two pairs of valve holes (4) are evenly provided at the top of the combustion chamber (3). A valve plug (5) is slidably connected inside the valve hole (4). One end of the valve plug (5) passes through the cylinder head body (1) and is fitted with a spring (6). A valve valve top (7) is fixedly connected to the top of the valve plug (5). Exhaust grooves (8) are symmetrically provided inside the cylinder head body (1). The exhaust grooves (8) are located on the same side as the cylinder head body (1). The two valve holes (4) are connected. An ignition hole (9) is opened at the top of the combustion chamber (3). A spark plug (10) is fixedly connected inside the ignition hole (9). A heat exchange passage (11) is opened inside the cylinder head body (1). The middle section of the heat exchange passage (11) surrounds the outer periphery of the combustion chamber (3). A connection port (12) is opened at the output end of the heat exchange passage (11). Multiple heat exchange fins (13) are evenly fixedly connected inside the heat exchange passage (11). The heat exchange fins (13) are sleeved on the outer periphery of the combustion chamber (3).
2. The cylinder head of a single-cylinder high-power diesel engine according to claim 1, characterized in that: One end of the cylinder head body (1) is symmetrically and fixedly connected to an oil supply valve (14), and the output end of the oil supply valve (14) is symmetrically and fixedly connected to an oil supply head (15), the output end of the oil supply head (15) extends into the interior of the combustion chamber (3).
3. The cylinder head of a single-cylinder high-power diesel engine according to claim 1, characterized in that: A filter plug (16) is fixedly connected inside the exhaust channel (8).
4. The cylinder head of a single-cylinder high-power diesel engine according to claim 1, characterized in that: The cylinder head body (1) has a fixing groove (17) on its top and a slot (18) adapted to the fixing groove (17) on its bottom. The fixing groove (17) has multiple operating grooves (19) evenly distributed on its inner bottom. An oil pump (20) is inserted into the slot (18). The oil pump (20) has multiple threaded holes (21) adapted to the operating groove (19) on its top. A fixing screw (22) threaded to the threaded hole (21) is inserted into the operating groove (19). The output end of the oil pump (20) passes through the cylinder head body (1) and extends into the fixing groove (17).
5. The cylinder head of a single-cylinder high-power diesel engine according to claim 4, characterized in that: The oil pump (20) has a plurality of guide grooves (23) evenly distributed around its periphery, and a plurality of guide sliders (24) adapted to the guide grooves (23) are evenly fixedly connected to the inner side of the slot (18).
6. The cylinder head of a single-cylinder high-power diesel engine according to claim 1, characterized in that: Limiting grooves (25) are provided on all four sides of the cylinder head body (1).
7. The cylinder head of a single-cylinder high-power diesel engine according to claim 1, characterized in that: The top of the cylinder head body (1) is symmetrically provided with weight reduction grooves (26).
8. The cylinder head of a single-cylinder high-power diesel engine according to claim 1, characterized in that: The surface of the cylinder head body (1) is coated with a zirconium oxide coating.