Structure of the engine cylinder head dedicated to the high-pressure fuel system

Abstract

The present invention discloses the structure of an engine cylinder head dedicated to a high-pressure fuel system, which relates to the technical field of engines. It includes a cylinder head. A cooling mechanism is provided at the lower end of the cylinder head to conduct the heat generated by the cylinder head and the cylinder block through water flow. A limiting mechanism is provided on the outer side of the cylinder head to limit part of the structure of the cooling mechanism. An anti-diffusion mechanism is provided at the upper end of the limiting mechanism to block the outward diffusion of the heat of the cooling mechanism. The cooling mechanism includes a mounting plate and a cooling component. A detachable water pump is installed at the upper end of the mounting plate, and a transmission component is installed at the output end of the water pump. Through this unique coolant passage design, the present invention can greatly improve the heat absorption capacity of the coolant for the cylinder head, significantly improve the heat dissipation efficiency, effectively take away the extra heat generated by the high-pressure fuel system in time, reduce the temperature of the engine cylinder head, and improve the reliability and durability of the engine.

Description

Technical Field

[0001] The present invention relates to the technical field of engines, and specifically to the structure of an engine cylinder head dedicated to a high-pressure fuel system. Background Art

[0002] An engine is a machine that can convert other forms of energy into mechanical energy, including, for example, internal combustion engines (reciprocating piston engines), external combustion engines (Stirling engines, steam engines, etc.), jet engines, electric motors, etc. For example, an internal combustion engine usually converts chemical energy into mechanical energy. With the development of engine technology, high-pressure fuel systems have been widely used because they can improve fuel injection accuracy and combustion efficiency, and have become an important part of modern internal combustion engines.

[0003] However, in the prior art, when the high-pressure fuel system is working, a large amount of additional heat will be generated during the high-pressure injection and intense combustion process of the fuel. The heat dissipation structure of the traditional engine cylinder head is difficult to cope with this heat, resulting in too high an engine temperature, seriously affecting the performance and reliability of the engine. At the same time, the intervention of the high-pressure fuel system changes the original thermal balance state of the engine, the temperature distribution in the combustion chamber is uneven, and problems such as knocking are likely to occur. The heat generated by components such as high-pressure fuel pumps also increases the difficulty of thermal management. Therefore, the structure of an engine cylinder head dedicated to a high-pressure fuel system is proposed. Summary of the Invention

[0004] The purpose of the present invention is to provide a structure of an engine cylinder head dedicated to a high-pressure fuel system to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A structure of an engine cylinder head dedicated to a high-pressure fuel system, including a cylinder head. A cooling mechanism is provided at the lower end of the cylinder head to conduct the heat generated by the cylinder head and the cylinder block by means of water flow. A limiting mechanism is provided on the outer side of the cylinder head to limit part of the structure of the cooling mechanism. An anti-diffusion mechanism is provided at the upper end of the limiting mechanism to block the outward diffusion of the heat of the cooling mechanism.

[0006] The cooling mechanism includes a mounting plate and a cooling component. A detachable water pump is installed at the upper end of the mounting plate. A transmission component is installed at the output end of the water pump. One end of the mounting plate is inserted through a fixing component, and part of the structure of the fixing component is fixed to the outer wall of the cylinder head.

[0007] The cooling component includes a spiral cooling pipe. A layer of cooling pipe is welded to the upper end of the cylinder head, and a second layer of cooling pipe is sleeved on the outer wall of the cylinder head. One end of the first layer of cooling pipe is fixedly installed with a connecting pipe, and the other end of the first layer of cooling pipe is fixedly installed with a first special-shaped connecting pipe. One end of the second layer of cooling pipe is fixedly installed with a second special-shaped connecting pipe. Triangular flow deflectors are fixedly installed on the inner wall of the spiral cooling pipe, and U-shaped flow deflectors are fixedly installed on the inner walls of the first layer of cooling pipe and the second layer of cooling pipe.

[0008] Preferably, the spiral cooling pipe is located below the cylinder head, and the other end of the connecting pipe is fixed to the water outlet end of the water pump.

[0009] Preferably, the other end of the first special-shaped connecting pipe communicates with the other end of the second layer of cooling pipe, and the other end of the second special-shaped connecting pipe communicates with one end of the spiral cooling pipe.

[0010] Preferably, the limiting mechanism includes two groups of connecting plates and a clamping component. A plurality of vertical blocks are welded to one side of each of the two groups of connecting plates, and semi-circular seats are welded to the lower ends of the plurality of vertical blocks. A first clamping seat is welded to one side of the cylinder head, and a second clamping seat is welded to the other side of the cylinder head. A first clamping block is inserted into the reserved slot of the second clamping seat, and a second clamping block is inserted into the reserved slot of the first clamping seat. Connecting frames are fixedly installed on one side of each of the two groups of connecting plates, and the inner walls of the plurality of semi-circular seats are in contact with the outer wall of the second layer of cooling pipe.

[0011] Preferably, one side of each of the two groups of connecting plates is in contact with the two sides of the cylinder head respectively. One end of the first clamping block is fixed to one side of one of the two groups of connecting plates, and one end of the second clamping block is fixed to one side of the other group of connecting plates.

[0012] Preferably, a limiting block is welded to one end of each of the two groups of connecting frames. The clamping component includes two groups of square seats. A lower pushing plate slides up and down inside each of the two groups of square seats. Supporting springs are fixedly installed at the top ends inside each of the two groups of square seats, and limiting slots are respectively formed through the two sides of each of the two groups of square seats.

[0013] Preferably, one end of each of the two groups of square seats is fixed to one end of the cylinder head. The lower ends of the two groups of supporting springs are respectively fixed to the upper ends of the two groups of lower pushing plates. The two limiting blocks are respectively inserted into the two limiting slots.

[0014] Preferably, the lower ends of the two groups of lower pushing plates are respectively in contact with the upper ends of the two groups of limiting blocks. Long holes are respectively formed through the lower ends of each of the two groups of square seats, and the protruding parts at the lower ends of the two limiting blocks are respectively inserted into the two long holes.

[0015] Preferably, the anti-diffusion mechanism includes a flexible nano heat insulation plate I. Plug plates are inserted into the upper openings of multiple vertical blocks. Flexible nano heat insulation plates II are fixedly installed on both sides of the flexible nano heat insulation plate I, and flexible nano heat insulation plates III are fixedly installed at both ends of the flexible nano heat insulation plate I.

[0016] Preferably, the flexible nano heat insulation plate I is located above the cylinder head, and the upper ends of multiple plug plates are fixed to the lower side of the flexible nano heat insulation plate I.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0018] By setting the cooling component, the first-layer cooling pipe and the second-layer cooling pipe are respectively in close contact with the top and outer wall of the cylinder head, which can effectively absorb the heat on the surface of the cylinder head. The spiral cooling pipe is wrapped around the outer wall of the cylinder block, enabling the coolant to better approach the high-temperature area, enhancing the heat exchange efficiency, increasing the flow path and contact area of the coolant, and preventing the heat in the cylinder block from gathering towards the cylinder head. At the same time, by setting U-shaped flow disturbance pieces inside the first-layer cooling pipe and the second-layer cooling pipe, and triangular flow disturbance pieces inside the spiral cooling pipe, the flow state of the coolant inside the first-layer cooling pipe, the second-layer cooling pipe, and the spiral cooling pipe can be changed to generate turbulence, further improving the heat dissipation effect. Through this unique coolant passage design, the heat absorption capacity of the coolant for the cylinder head can be greatly improved, the heat dissipation efficiency can be significantly increased, the extra heat generated by the high-pressure fuel system can be effectively taken away in time, the temperature of the engine cylinder head can be reduced, and the reliability and durability of the engine can be enhanced.

[0019] 2. By setting the anti-diffusion mechanism, a flexible nano heat insulation plate I, two groups of flexible nano heat insulation plates II, and two groups of flexible nano heat insulation plates III are respectively arranged between the combustion chamber and other parts of the cylinder head. This can not only prevent the heat from diffusing in all directions but also quickly disperse the locally concentrated heat evenly over a larger area, and then the heat is taken away by the first-layer cooling pipe, the second-layer cooling pipe, and the spiral cooling pipe, thereby improving the temperature distribution uniformity inside the cylinder head, reducing the knocking risk, and enhancing the overall thermal stability of the engine.

[0020] 3. By setting the limiting mechanism, the second clamping block is inserted into the first clamping seat, the first clamping block is inserted into the second clamping seat, and two groups of limiting blocks are respectively inserted into the corresponding limiting grooves. At this time, the inner walls of multiple semi-circular seats are all in contact with the outer wall of the second-layer cooling pipe, which is convenient for multiple semi-circular seats to support the second-layer cooling pipe. And by setting the clamping component, it is convenient for two groups of support springs to push two groups of limiting blocks to move through two groups of downward pushing plates, so that the protruding parts of the two groups of limiting blocks are respectively inserted into the long holes of two groups of square seats, and then the two groups of limiting blocks can be respectively fixed inside the two groups of square seats, thereby being able to fix the two groups of limiting blocks to improve the fixing property of the two groups of connecting plates. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 Schematic three-dimensional structure diagram of the structure of the engine cylinder head dedicated to the high-pressure fuel system of the present invention;

[0022] Figure 2 Partial top view of the structure of the engine cylinder head dedicated to the high-pressure fuel system of the present invention;

[0023] Figure 3 Partial three-dimensional view of the structure of the engine cylinder head dedicated to the high-pressure fuel system of the present invention;

[0024] Figure 4 Schematic three-dimensional structure diagram of the cooling mechanism in the structure of the engine cylinder head dedicated to the high-pressure fuel system of the present invention;

[0025] Figure 5 Partial structure diagram of the cooling component in the structure of the engine cylinder head dedicated to the high-pressure fuel system of the present invention;

[0026] Figure 6 Of the structure of the engine cylinder head dedicated to the high-pressure fuel system of the present invention Figure 5 Enlarged structure diagram of A therein;

[0027] Figure 7 Schematic three-dimensional structure diagram of the triangular spoiler in the structure of the engine cylinder head dedicated to the high-pressure fuel system of the present invention;

[0028] Figure 8 Of the structure of the engine cylinder head dedicated to the high-pressure fuel system of the present invention Figure 5 Enlarged structure diagram of B therein;

[0029] Figure 9 Flow diagram of laminar flow and turbulent flow of the structure of the engine cylinder head dedicated to the high-pressure fuel system of the present invention;

[0030] Figure 10 Schematic three-dimensional structure diagram of a layer of cooling pipes, a second layer of cooling pipes and a limiting mechanism in the structure of the engine cylinder head dedicated to the high-pressure fuel system of the present invention;

[0031] Figure 11 Side view of the limiting mechanism in the structure of the engine cylinder head dedicated to the high-pressure fuel system of the present invention;

[0032] Figure 12 Schematic structure diagram of the connecting frame and the square seat in the structure of the engine cylinder head dedicated to the high-pressure fuel system of the present invention;

[0033] Figure 13 Schematic structure diagram of the cylinder head, the mounting plate and the square seat in the structure of the engine cylinder head dedicated to the high-pressure fuel system of the present invention;

[0034] Figure 14The bottom view of the anti-diffusion mechanism in the structure of the engine cylinder head dedicated to the high-pressure fuel system of the present invention;

[0035] Figure 15 The exploded structural schematic diagram of the vertical block and the support insertion plate in the structure of the engine cylinder head dedicated to the high-pressure fuel system of the present invention.

[0036] In the figure:

[0037] 1. Cylinder head;

[0038] 2. Cooling mechanism; 21. Mounting plate; 22. Water pump; 23. Cooling component; 231. First-layer cooling pipe; 232. Spiral cooling pipe; 233. Second-layer cooling pipe; 234. Connecting pipe; 235. First special-shaped connecting pipe; 236. Second special-shaped connecting pipe; 237. Triangular flow spoiler; 238. U-shaped flow spoiler; 24. Transmission component; 25. Fixing component;

[0039] 3. Limiting mechanism; 31. Vertical block; 311. Semi-circular seat; 32. Clamping component; 321. Square seat; 322. Lower push plate; 323. Support spring; 324. Limiting groove; 33. Connecting plate; 34. First clamping seat; 35. Second clamping seat; 36. First clamping block; 37. Second clamping block; 38. Connecting frame; 39. Limiting block;

[0040] 4. Anti-diffusion mechanism; 41. Support insertion plate; 42. First flexible nano thermal insulation plate; 43. Second flexible nano thermal insulation plate; 44. Third flexible nano thermal insulation plate. Specific embodiments

[0041] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention.

[0042] Embodiment 1: Refer to Figures 1 to 15 As shown in the figure: The structure of the engine cylinder head dedicated to the high-pressure fuel system includes a cylinder head 1. A cooling mechanism 2 is provided at the lower end of the cylinder head 1 to conduct the heat generated by the cylinder head 1 and the cylinder block with water flow. A limiting mechanism 3 is provided outside the cylinder head 1 to limit some structures of the cooling mechanism 2. An anti-diffusion mechanism 4 is provided at the upper end of the limiting mechanism 3 to block the heat of the cooling mechanism 2 from diffusing outward;

[0043] The cooling mechanism 2 includes a mounting plate 21 and a cooling assembly 23. A detachable water pump 22 is installed at the upper end of the mounting plate 21. The output end of the water pump 22 is installed with a transmission assembly 24. One end of the mounting plate 21 is inserted through and fixed with a fixing assembly 25, and a part of the structure of the fixing assembly 25 is fixed to the outer wall of the cylinder head 1;

[0044] The cooling assembly 23 includes a spiral cooling pipe 232. A layer of cooling pipe 231 is welded to the upper end of the cylinder head 1. A second layer of cooling pipe 233 is sleeved on the outer wall of the cylinder head 1. One end of the first layer of cooling pipe 231 is fixedly installed with a connecting pipe 234. The other end of the first layer of cooling pipe 231 is fixedly installed with a first special-shaped connecting pipe 235. One end of the second layer of cooling pipe 233 is fixedly installed with a second special-shaped connecting pipe 236. Triangular flow disturbance pieces 237 are fixedly installed on the inner wall of the spiral cooling pipe 232. U-shaped flow disturbance pieces 238 are fixedly installed on the inner walls of both the first layer of cooling pipe 231 and the second layer of cooling pipe 233. The spiral cooling pipe 232 is located below the cylinder head 1. The other end of the connecting pipe 234 is fixed to the water outlet end of the water pump 22. The other end of the first special-shaped connecting pipe 235 is communicated with the other end of the second layer of cooling pipe 233. The other end of the second special-shaped connecting pipe 236 is communicated with one end of the spiral cooling pipe 232.

[0045] In this embodiment, by welding the first layer of cooling pipe 231 to the top of the cylinder head 1 and sleeving the second layer of cooling pipe 233 on the outer wall of the cylinder head 1. Since the spiral cooling pipe 232 is made of a material with a certain elasticity, such as specially modified aluminum alloy or high-performance elastic engineering plastic, this elastic property enables the spiral cooling pipe 232 to better fit the complex contour of the engine cylinder block, tightly wrap the cylinder block. Then, the spiral cooling pipe 232 is tightly wrapped on the outer wall of the cylinder block. Then, the transmission assembly 24 is connected to the transmission component on the engine, so that the power on the engine is transmitted to the water pump 22 through the transmission assembly 24, which is convenient for providing power to the water pump 22. The inside of the water pump 22 generally adopts a centrifugal structure. When the impeller rotates at a high speed in the pump housing, a low-pressure area will be formed at the center of the impeller, so that the coolant in the coolant storage tank is sucked into the pump. Then, under the action of centrifugal force, the water is thrown to the edge of the impeller and is transported to the coolant passage of the engine at a higher pressure and speed, promoting the water to circulate in the entire cooling mechanism 2. At the same time, the water pump 22 can accurately control the flow rate of the coolant according to the engine speed and load. When the engine is running at high load and generating a large amount of heat, the speed of the water pump 22 increases accordingly, increasing the circulation volume of the coolant to ensure that the engine is fully cooled; while when the engine is at low load or cold starting, the speed of the water pump 22 decreases, reducing the coolant flow rate, which is beneficial to the engine quickly warming up to the normal working temperature, improving fuel economy and engine efficiency;

[0046] The coolant is introduced into the interior of the connecting pipe 234 through the water pump 22, flows into the interior of the second-layer cooling pipe 233 through a layer of cooling pipes 231 and the first special-shaped connecting pipe 235, and then flows into the interior of the spiral cooling pipe 232 through the second special-shaped connecting pipe 236, enabling the coolant to flow inside the first-layer cooling pipe 231, the second-layer cooling pipe 233, and the spiral cooling pipe 232. This can effectively absorb the heat on the surface of the cylinder head 1 and also absorb the heat on the outer wall of the cylinder block, preventing the heat in the cylinder block from accumulating at the cylinder head 1;

[0047] During the flow of the coolant inside the first-layer cooling pipe 231, the second-layer cooling pipe 233, and the spiral cooling pipe 232, under the action of two groups of U-shaped turbulators 238 and triangular turbulators 237, the coolant can be made to generate turbulence inside the first-layer cooling pipe 231, the second-layer cooling pipe 233, and the spiral cooling pipe 232, thereby further improving the heat dissipation effect. Through this unique coolant passage design, the heat absorption capacity of the coolant for the cylinder head 1 can be greatly enhanced, significantly improving the heat dissipation efficiency. It can effectively take away the extra heat generated by the high-pressure fuel system in a timely manner, reduce the temperature of the engine cylinder head 1, and enhance the reliability and durability of the engine;

[0048] In pipeline transportation, turbulence helps reduce the flow resistance of the fluid and improve the transportation efficiency. Although the flow pattern of turbulence seems complex and chaotic, in fact, it can make the velocity distribution of the fluid on the cross-section of the pipeline more uniform, reduce the influence of the boundary layer, thereby reducing the frictional resistance. During turbulence, there are strong perturbations and mixing inside the fluid, which speeds up the transfer of heat and mass;

[0049] By manufacturing the spiral cooling pipe 232 from a material with a certain elasticity, this elastic characteristic can facilitate the staff to adjust the shape of the spiral cooling pipe 232 so that the spiral cooling pipe 232 can better fit the complex contour of the engine cylinder block and tightly wrap the cylinder block, effectively reducing the thermal resistance between the coolant and the cylinder block, and ensuring that the coolant can absorb the heat dissipated by the cylinder head 1 in all directions without dead angles;

[0050] The setting of the mounting plate 21 facilitates the support of the water pump 22 by the mounting plate 21, and the setting of the fixing assembly 25 can fix the mounting plate 21 on the outer wall of the cylinder head 1.

[0051] Example Two: According to Figure 2 、 Figure 3 、 Figure 10 、 Figure 11 、 Figure 12 、 Figure 13 and Figure 15As shown in the figure, the limiting mechanism 3 includes two groups of connecting plates 33 and a clamping component 32. On one side of the two groups of connecting plates 33, multiple vertical blocks 31 are welded. At the lower ends of the multiple vertical blocks 31, semi-circular seats 311 are welded. On one side of the cylinder head 1, a first clamping seat 34 is welded. On the other side of the cylinder head 1, a second clamping seat 35 is welded. Inside the reserved groove of the second clamping seat 35, a first clamping block 36 is inserted. Inside the reserved groove of the first clamping seat 34, a second clamping block 37 is inserted. On one side of the two groups of connecting plates 33, connecting frames 38 are fixedly installed. The inner walls of the multiple semi-circular seats 311 are all in contact with the outer wall of the second-layer cooling pipe 233. One side of the two groups of connecting plates 33 is respectively in contact with both sides of the cylinder head 1. One end of the first clamping block 36 is fixed to one side of one group of connecting plates 33. One end of the second clamping block 37 is fixed to one side of the other group of connecting plates 33. At one end of the two groups of connecting frames 38, limiting blocks 39 are welded. The clamping component 32 includes two groups of square seats 321. Inside the two groups of square seats 321, lower push plates 322 slide up and down. At the top ends inside the two groups of square seats 321, support springs 323 are fixedly installed. On both sides of the two groups of square seats 321, limiting grooves 324 are penetrated and opened. One end of the two groups of square seats 321 is fixed to one end of the cylinder head 1. The lower ends of the two groups of support springs 323 are respectively fixed to the upper ends of the two groups of lower push plates 322. The two groups of limiting blocks 39 are respectively inserted into the two groups of limiting grooves 324. The lower ends of the two groups of lower push plates 322 are respectively in contact with the upper ends of the two groups of limiting blocks 39. At the lower ends of the two groups of square seats 321, long holes are penetrated and opened, and the protruding parts at the lower ends of the two groups of limiting blocks 39 are respectively inserted into the two long holes.

[0052] In this embodiment, first insert the second clamping block 37 into the first clamping seat 34 and the first clamping block 36 into the second clamping seat 35. Then, operate the two groups of connecting frames 38 one by one, so that the two groups of connecting frames 38 drive the two groups of limiting blocks 39 to move. The two groups of limiting blocks 39 are respectively inserted into the two groups of limiting grooves 324. At this time, the inner walls of the multiple semi-circular seats 311 are all in contact with the outer wall of the second-layer cooling pipe 233. With the cooperation of the two groups of connecting plates 33, it is convenient for the multiple semi-circular seats 311 to support the second-layer cooling pipe 233, and the firmness between the second-layer cooling pipe 233 and the outer wall of the cylinder head 1 can be improved.

[0053] Under the elastic force of the two groups of support springs 323, the two groups of support springs 323 drive the two groups of lower push plates 322 to move, so that the two groups of lower push plates 322 slide downward inside the two groups of square seats 321 respectively. At the same time, the two groups of lower push plates 322 push the two groups of limiting blocks 39 to move, so that the protruding parts of the two groups of limiting blocks 39 are respectively inserted into the long holes of the two groups of square seats 321. Furthermore, the two groups of limiting blocks 39 can be fixed inside the two groups of square seats 321 respectively, so as to fix the two groups of limiting blocks 39 and improve the fixing stability of the two groups of connecting plates 33.

[0054] By designing semi-circular holes through one end of two sets of connecting plates 33, the installation of the cylinder head 1 will not be affected, ensuring that the cylinder head 1 can be normally connected to the cylinder block.

[0055] Embodiment 3: According to Figure 1 , Figure 2 , Figure 14 and Figure 15 As shown, the anti-diffusion mechanism 4 includes a flexible nano heat insulation plate one 42. Inserted into the upper openings of multiple sets of vertical blocks 31 are support insertion plates 41. Fixedly installed on both sides of the flexible nano heat insulation plate one 42 are flexible nano heat insulation plates two 43. Fixedly installed at both ends of the flexible nano heat insulation plate one 42 are flexible nano heat insulation plates three 44. The flexible nano heat insulation plate one 42 is located above the cylinder head 1. The upper ends of multiple sets of support insertion plates 41 are fixed to the lower side of the flexible nano heat insulation plate one 42.

[0056] In this embodiment, by respectively arranging the flexible nano heat insulation plate one 42, two sets of flexible nano heat insulation plates two 43 and two sets of flexible nano heat insulation plates three 44 between the combustion chamber and other parts of the cylinder head 1, and the lower end of the flexible nano heat insulation plate one 42 contacts the outer wall of a layer of cooling pipes 231, and two sets of flexible nano heat insulation plates two 43 and two sets of flexible nano heat insulation plates three 44 both contact the outer walls of the spiral cooling pipes 232 and the second layer of cooling pipes 233, not only can it prevent heat from diffusing to the surroundings, but also can quickly evenly disperse the locally concentrated heat to a larger area, and then the heat is taken away by the layer of cooling pipes 231, the second layer of cooling pipes 233 and the spiral cooling pipes 232, thereby improving the uniformity of the temperature distribution inside the cylinder head 1, reducing the risk of knocking, and enhancing the overall thermal stability of the engine;

[0057] With the insertion and connection cooperation between multiple sets of support insertion plates 41 and multiple sets of vertical blocks 31, it is convenient to pull out or insert multiple sets of support insertion plates 41 from the inside of multiple sets of vertical blocks 31, and it is possible to quickly disassemble and install multiple sets of support insertion plates 41 and multiple sets of vertical blocks 31. At the same time, multiple sets of support insertion plates 41 can support the flexible nano heat insulation plate one 42;

[0058] The flexible nano heat insulation plate one 42, two sets of flexible nano heat insulation plates two 43, and two sets of flexible nano heat insulation plates three 44, due to their good flexibility and bending characteristics, can adapt to installation surfaces of different shapes and angles, improving the practicality of the flexible nano heat insulation plate one 42, two sets of flexible nano heat insulation plates two 43, and two sets of flexible nano heat insulation plates three 44.

[0059] Usage method and working principle of this device: Slip the spiral cooling pipe 232 over the outer wall of the cylinder block, install the cylinder head 1 on the cylinder block, slip the two-layer cooling pipe 233 over the outer wall of the cylinder head 1, fix the mounting plate 21 to the outer wall of the cylinder head 1 through the fixing assembly 25, install the water pump 22 on the mounting plate 21, then connect the transmission assembly 24 to the transmission system of the engine, then connect the components of the cooling assembly 23 one by one, and connect the other end of the spiral cooling pipe 232 to the coolant storage tank;

[0060] Then, insert the first clamping block 36 into the second clamping seat 35 one by one, insert the second clamping block 37 into the first clamping seat 34, and then insert the two groups of limiting blocks 39 into the two groups of limiting grooves 324 respectively. Under the elastic force of the two groups of support springs 323, the two groups of support springs 323 drive the two groups of push plates 322 to move, so that the two groups of push plates 322 slide downward inside the two groups of square seats 321 respectively. At the same time, the two groups of push plates 322 push the two groups of limiting blocks 39 to move, so that the protruding parts of the two groups of limiting blocks 39 are inserted into the long holes of the two groups of square seats 321 respectively, and then the two groups of limiting blocks 39 can be fixed inside the two groups of square seats 321 respectively. At this time, the multiple semi-circular seats 311 can support the two-layer cooling pipe 233;

[0061] Finally, when the engine is running at high load and generating a large amount of heat, the speed of the water pump 22 increases accordingly, increasing the circulation volume of the coolant to ensure that the engine is fully cooled; and when the engine is running at low load or cold starting, the speed of the water pump 22 decreases, reducing the coolant flow. During this period, the water pump 22 transmits the coolant to the inside of the first-layer cooling pipe 231 through the connecting pipe 234. The coolant flows to the two-layer cooling pipe 233 through the first special-shaped connecting pipe 235, and then flows into the spiral cooling pipe 232 through the second special-shaped connecting pipe 236. Under the action of the two groups of U-shaped turbulators 238 and the triangular turbulator 237, the coolant can generate turbulence inside the first-layer cooling pipe 231, the two-layer cooling pipe 233 and the spiral cooling pipe 232, which can further improve the heat dissipation effect.

[0062] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. Structure of an engine cylinder head dedicated to a high-pressure fuel system, including a cylinder head (1), characterized in that: A cooling mechanism (2) is provided at the lower end of the cylinder head (1) to conduct the heat generated by the cylinder head (1) and the cylinder block through water flow. A limiting mechanism (3) is provided outside the cylinder head (1) to limit part of the structure of the cooling mechanism (2). An anti-diffusion mechanism (4) is provided at the upper end of the limiting mechanism (3) to block the outward diffusion of the heat of the cooling mechanism (2); The cooling mechanism (2) includes a mounting plate (21) and a cooling component (23). A detachable water pump (22) is mounted at the upper end of the mounting plate (21). The output end of the water pump (22) is mounted with a transmission component (24). One end of the mounting plate (21) is inserted through and fixed with a fixing component (25), and part of the structure of the fixing component (25) is fixed to the outer wall of the cylinder head (1); The cooling component (23) includes a spiral cooling pipe (232). A layer of cooling pipe (231) is welded to the upper end of the cylinder head (1). A second layer of cooling pipe (233) is sleeved on the outer wall of the cylinder head (1). One end of the first layer of cooling pipe (231) is fixedly installed with a connecting pipe (234). The other end of the first layer of cooling pipe (231) is fixedly installed with a first special-shaped connecting pipe (235). One end of the second layer of cooling pipe (233) is fixedly installed with a second special-shaped connecting pipe (236). Triangular flow disturbing pieces (237) are fixedly installed on the inner wall of the spiral cooling pipe (232). U-shaped flow disturbing pieces (238) are fixedly installed on the inner walls of both the first layer of cooling pipe (231) and the second layer of cooling pipe (233); The spiral cooling pipe (232) is made of a material with a certain elasticity; The interior of the water pump (22) adopts a centrifugal structure. At the same time, the water pump (22) can accurately control the flow rate of the coolant according to the engine speed and load; The limiting mechanism (3) includes two groups of connecting plates (33) and two groups of clamping components (32). Multiple vertical blocks (31) are welded on one side of each of the two groups of connecting plates (33). Semi-circular seats (311) are welded at the lower ends of the multiple vertical blocks (31). A first clamping seat (34) is welded on one side of the cylinder head (1). A second clamping seat (35) is welded on the other side of the cylinder head (1). A first clamping block (36) is inserted into the reserved slot of the second clamping seat (35). A second clamping block (37) is inserted into the reserved slot of the first clamping seat (34). Connecting frames (38) are fixedly installed on one side of each of the two groups of connecting plates (33). The inner walls of the multiple semi-circular seats (311) are in contact with the outer wall of the second layer of cooling pipe (233); The anti-diffusion mechanism (4) includes a flexible nano thermal insulation board one (42). Support insertion plates (41) are inserted into the upper openings of the multiple vertical blocks (31). Flexible nano thermal insulation boards two (43) are fixedly installed on both sides of the flexible nano thermal insulation board one (42). Flexible nano thermal insulation boards three (44) are fixedly installed at both ends of the flexible nano thermal insulation board one (42); The first flexible nano heat insulation plate (42) is located above the cylinder head (1), and the upper ends of multiple groups of the support and insertion plates (41) are fixed to the lower side of the first flexible nano heat insulation plate (42).

2. The structure of the engine cylinder head dedicated to the high-pressure fuel system according to claim 1, characterized in that: The spiral cooling pipe (232) is located below the cylinder head (1), and the other end of the connecting pipe (234) is fixed to the water outlet end of the water pump (22).

3. The structure of the engine cylinder head dedicated to the high-pressure fuel system according to claim 1, wherein: The other end of the first special-shaped connecting pipe (235) is communicated with the other end of the second-layer cooling pipe (233), and the other end of the second special-shaped connecting pipe (236) is communicated with one end of the spiral cooling pipe (232).

4. The structure of the engine cylinder head dedicated to the high-pressure fuel system according to claim 1, characterized in that: One side of each of the two connecting plates (33) is in contact with both sides of the cylinder head (1), one end of the first clamping block (36) is fixed to one side of one of the connecting plates (33), and one end of the second clamping block (37) is fixed to one side of the other connecting plate (33).

5. The structure of the engine cylinder head dedicated to the high-pressure fuel system according to claim 1, characterized in that: One end of each of the two connecting frames (38) is welded with a limiting block (39). The clamping assembly (32) includes two square seats (321). A lower push plate (322) slides up and down inside each of the two square seats (321). A support spring (323) is fixedly installed at the top end inside each of the two square seats (321). A limiting groove (324) is penetrated and opened on both sides of each of the two square seats (321).

6. The structure of the engine cylinder head for a high-pressure fuel system according to claim 5, characterized in that: One end of each of the two square seats (321) is fixed to one end of the cylinder head (1). The lower ends of the two support springs (323) are respectively fixed to the upper ends of the two lower push plates (322). The two limiting blocks (39) are respectively inserted into the two limiting grooves (324).

7. The structure of the engine cylinder head for a high-pressure fuel system according to claim 6, characterized in that: The lower ends of the two lower push plates (322) are respectively in contact with the upper ends of the two limiting blocks (39). Long holes are penetrated and opened at the lower ends of each of the two square seats (321), and the protruding parts at the lower ends of the two limiting blocks (39) are respectively inserted into the two long holes.

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