A double-layer water-jacketed aluminum alloy cylinder head for achieving uniform cooling in engines

Abstract

This utility model discloses a double-layer water-jacketed aluminum alloy cylinder head for achieving uniform cooling, relating to the field of engine technology. It includes an aluminum alloy cylinder head mechanism and a first water-jacket mechanism and a second water-jacket mechanism respectively assembled inside the aluminum alloy cylinder head mechanism. The aluminum alloy cylinder head mechanism includes a cylinder head body, with an intake channel and an exhaust channel respectively opened at the bottom of the cylinder head body, and a spark plug mounting groove opened at the top of the cylinder head body. The first water-jacket mechanism includes a manifold opened at the bottom of the cylinder head body, the front end of which is connected to a first main cooling channel corresponding to the intake channel. This double-layer water-jacketed aluminum alloy cylinder head for achieving uniform cooling, through the cooperation between the first and second water-jacket mechanisms, achieves targeted cooling of different areas of the cylinder head, effectively avoiding the problem of uneven distribution of cooling channels in traditional cylinder heads, and effectively improving the cooling effect.

Description

Technical Field

[0001] This utility model relates to the field of engine technology, specifically to a double-layer water-jacketed aluminum alloy cylinder head for engines that achieves uniform cooling. Background Technology

[0002] In the rapid development of the modern automotive industry, the engine, as the core power source of automobiles, plays a decisive role in the continuous improvement of its performance, which in turn affects the power, economy, and environmental friendliness of vehicles. With increasingly stringent requirements for energy conservation and emission reduction, and consumers' higher demands for vehicle power performance and fuel economy, engines are constantly developing towards higher power density and higher thermal efficiency. This means that engines need to withstand higher thermal and mechanical loads during operation, especially the cylinder head, which is in direct contact with high-temperature and high-pressure combustion gases in an extremely harsh working environment. The cylinder head must not only withstand these high temperatures and pressures but also ensure the normal operation of key components such as valves and fuel injectors. At the same time, in order to meet increasingly stringent emission regulations, engines need to adopt more advanced combustion technologies, such as direct injection and lean combustion. These technologies further exacerbate the thermal load on the cylinder head. Therefore, an effective cooling system is crucial for maintaining the normal operation of the engine and preventing thermal deformation and damage to the cylinder head.

[0003] However, in traditional engine cylinder head designs, the cooling channels are unevenly distributed, making it difficult to achieve ideal cooling. The cooling channels of the air inlet and outlet in traditional cylinder heads are interconnected with the cooling channels of the spark plugs. This causes the coolant to absorb heat from the vicinity of the air inlet and outlet and then from the vicinity of the spark plugs, resulting in a sharing of coolant and reduced cooling efficiency. Especially when the engine is running under high load, local areas are prone to overheating, causing considerable inconvenience to users. Utility Model Content

[0004] The purpose of this invention is to provide a double-layer water-jacketed aluminum alloy cylinder head for engines that achieves uniform cooling, thereby solving the problem that the cooling channels in traditional engine cylinder heads are unevenly distributed, making it difficult to achieve an ideal cooling state and thus reducing the cooling effect.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a double-layer water-jacketed aluminum alloy cylinder head for engines that achieves uniform cooling, comprising:

[0006] An aluminum alloy cylinder head mechanism and a first water jacket mechanism and a second water jacket mechanism respectively assembled inside the aluminum alloy cylinder head mechanism;

[0007] The aluminum alloy cylinder head mechanism includes a cylinder head body, with an intake channel and an exhaust channel respectively opened at the bottom of the cylinder head body, and a spark plug mounting groove opened at the top of the cylinder head body.

[0008] The first water jacket mechanism includes a manifold pipe opened at the bottom of the cylinder head body. The front end of the manifold pipe is connected to a first main cooling channel corresponding to the intake channel. The bottom of the cylinder head body is provided with a first main water inlet connected to the first main cooling channel. The rear end of the manifold pipe is connected to a second main cooling channel corresponding to the exhaust channel. The bottom of the cylinder head body is provided with a second main water inlet connected to the second main cooling channel.

[0009] The second water jacket mechanism includes a cooling ring pipe opened inside the cylinder head body. The cooling ring pipe wraps around the spark plug mounting groove. The cooling ring pipes are interconnected through a delivery pipe. A water inlet is opened on one side of the delivery pipe, which extends to the bottom of the cylinder head body. A water outlet is connected to the other side of the delivery pipe.

[0010] Furthermore, a water outlet is provided on one side of the cylinder head body, and the manifold and the water outlet are interconnected.

[0011] Furthermore, the water outlet channel and the water outlet are connected to each other through a drain pipe, and the top of the manifold is provided with a through hole corresponding to the spark plug mounting slot.

[0012] Furthermore, the front end of the manifold is connected to a first auxiliary cooling channel, which is located between the first main cooling channels, and the bottom of the cylinder head body is provided with a first auxiliary water inlet that communicates with the first auxiliary cooling channel.

[0013] Furthermore, the rear end of the manifold is connected to a second auxiliary cooling channel, which is located between the second main cooling channels. The bottom of the cylinder head body is provided with a second auxiliary water inlet that communicates with the second auxiliary cooling channel.

[0014] Furthermore, an air inlet is provided at the front end of the cylinder head body, and the air inlet and the air intake channel are interconnected.

[0015] Furthermore, an air outlet is provided at the rear end of the cylinder head body, and the air outlet is connected to the air outlet channel.

[0016] Compared with the prior art, the present invention provides an engine double-layer water-jacketed aluminum alloy cylinder head that achieves uniform cooling. Through the cooperation between the first water jacket mechanism and the second water jacket mechanism, targeted cooling of different areas of the cylinder head is achieved. The first water jacket mechanism mainly cools the area near the intake and exhaust passages, while the second water jacket mechanism focuses on cooling the area around the spark plug mounting slot. This effectively avoids the problem of uneven distribution of cooling channels in traditional cylinder heads, allows the coolant to run independently, avoids repeated heat absorption, and enables more uniform cooling of all parts of the cylinder head, thus effectively improving the cooling effect. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0018] Figure 1 This is a schematic diagram of the main upward-facing structure provided for an embodiment of the present utility model;

[0019] Figure 2 This is a schematic diagram of the top view structure provided for an embodiment of the present utility model;

[0020] Figure 3 This is a schematic diagram of the rear view structure provided for an embodiment of the present utility model;

[0021] Figure 4 A schematic diagram of the distribution structure of the first water jacket mechanism and the second water jacket mechanism provided for an embodiment of this utility model;

[0022] Figure 5 A schematic diagram of the first water jacket mechanism provided in this embodiment of the utility model;

[0023] Figure 6 A schematic diagram of the second water jacket mechanism provided for an embodiment of this utility model.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. Aluminum alloy cylinder head mechanism; 11. Cylinder head body; 12. Inlet; 13. Inlet passage; 14. Outlet passage; 15. Spark plug mounting slot; 16. Outlet; 2. First water jacket mechanism; 21. Outlet; 22. First main inlet; 23. First main cooling passage; 24. Second main inlet; 25. Second main cooling passage; 26. First auxiliary inlet; 27. First auxiliary cooling passage; 28. Manifold; 29. ​​Through hole; 210. Second auxiliary inlet; 211. Second auxiliary cooling passage; 3. Second water jacket mechanism; 31. Inlet hole; 32. Delivery pipe; 33. Cooling ring pipe; 34. Outlet passage; 35. Drain pipe. Detailed Implementation

[0026] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0027] As attached Figure 1 To be continued Figure 6 As shown:

[0028] Example 1:

[0029] This utility model provides a double-layer water-jacketed aluminum alloy cylinder head for an engine that achieves uniform cooling, comprising:

[0030] Aluminum alloy cylinder head mechanism 1 and a first water jacket mechanism 2 and a second water jacket mechanism 3 respectively assembled inside the aluminum alloy cylinder head mechanism 1;

[0031] The aluminum alloy cylinder head mechanism 1 includes a cylinder head body 11, with an intake channel 13 and an exhaust channel 14 respectively opened at the bottom of the cylinder head body 11, and a spark plug mounting groove 15 opened at the top of the cylinder head body 11.

[0032] The first water jacket mechanism 2 includes a manifold 28 opened at the bottom of the cylinder head body 11. The front end of the manifold 28 is connected to a first main cooling channel 23 corresponding to the intake channel 13. The bottom of the cylinder head body 11 is provided with a first main water inlet 22 connected to the first main cooling channel 23. The rear end of the manifold 28 is connected to a second main cooling channel 25 corresponding to the exhaust channel 14. The bottom of the cylinder head body 11 is provided with a second main water inlet 24 connected to the second main cooling channel 25.

[0033] The second water jacket mechanism 3 includes a cooling ring pipe 33 opened inside the cylinder head body 11. The cooling ring pipe 33 wraps around the spark plug mounting groove 15. The cooling ring pipes 33 are interconnected by a delivery pipe 32. A water inlet hole 31 is opened on one side of the delivery pipe 32, and the water inlet hole 31 extends to the bottom of the cylinder head body 11. A water outlet channel 34 is connected to the other side of the delivery pipe 32.

[0034] As can be seen from the above, by splicing and installing the cylinder head body 11 with the engine block during use, the first main water inlet 22, the second main water inlet 24 and the water inlet hole 31 can be connected with the water passage on the engine block. The coolant can be introduced into the first main cooling channel 23 through the first main water inlet 22. The first main cooling channel 23 is distributed around the intake channel 13 and can absorb the heat at the intake channel 13. The coolant after absorbing the heat can be introduced into the manifold 28. The coolant can be introduced into the second main cooling channel 25 through the second main water inlet 24. The second main cooling channel 25 is distributed around the exhaust channel 14 and can absorb the heat at the exhaust channel 14. The coolant after absorbing the heat can be introduced into the manifold 28. The manifold 28 can be used to conveniently collect the coolant in the first water jacket mechanism 2 for unified transportation and discharge.

[0035] By introducing coolant into the inlet hole 31, the coolant can be transported into the delivery pipe 32 and then into the cooling ring pipe 33. The cooling ring pipe 33 is distributed around the spark plug mounting groove 15, which can evenly absorb the heat generated at the spark plug position. The delivery pipe 32 can easily guide the coolant after absorbing heat into the outlet channel 34 for discharge. This effectively avoids the problem of uneven distribution of traditional cylinder head cooling channels, allowing the coolant to run independently and avoiding repeated heat absorption. This results in more uniform cooling of all parts of the cylinder head and effectively improves the cooling effect.

[0036] From the appendix Figure 1 and attached Figure 5 It can be seen that a water outlet 21 is provided on one side of the cylinder head body 11, and the manifold 28 and the water outlet 21 are interconnected.

[0037] As can be seen from the above, the coolant collected in the manifold 28 from the first main cooling channel 23 and the second main cooling channel 25 can be smoothly discharged through the outlet 21, thereby completing the circulation of the coolant in the first water jacket mechanism 2. This ensures that after the coolant absorbs heat from the area near the intake channel 13 and the exhaust channel 14, it can be effectively and promptly discharged, avoiding the accumulation of heat inside the cylinder head body 11, thereby improving the cooling efficiency.

[0038] For details, please refer to the appendix. Figure 1 and attached Figure 6 As shown, the water outlet channel 34 and the water outlet 21 are connected to each other through the drain pipe 35, and the top of the manifold 28 is provided with a through hole 29 corresponding to the spark plug mounting groove 15.

[0039] As can be seen from the above, the coolant in the outlet channel 34 can be introduced into the outlet 21 through the drain pipe 35, so that the coolant in the second water jacket mechanism 3 that has absorbed the heat near the spark plug mounting groove 15 can be smoothly discharged, and merged with the coolant discharged in the first water jacket mechanism 2 or discharged separately to the corresponding water passage of the engine block, further ensuring the smooth circulation of coolant. The through hole 29 can provide installation space for the spark plug, avoiding affecting the installation operation of the spark plug, and at the same time not affecting the flow of coolant inside the manifold 28.

[0040] For details, please refer to the appendix. Figure 5 As shown, the front end of the manifold 28 is connected to the first auxiliary cooling channel 27, which is located between the first main cooling channels 23. The bottom of the cylinder head body 11 is provided with a first auxiliary water inlet 26 that is connected to the first auxiliary cooling channel 27.

[0041] As can be seen from the above, the coolant can be introduced into the first secondary cooling channel 27 through the first secondary water inlet 26. The first secondary cooling channel 27 is distributed in the area between the first main cooling channel 23, which can absorb heat in a wider area near the air intake channel 13, enhance the cooling effect of the first water jacket mechanism 2 on the area around the air intake channel 13, and enable the area to be cooled more fully, further improving the uniformity of cooling.

[0042] For details, please refer to the appendix. Figure 5 As shown, the rear end of the manifold 28 is connected to a second auxiliary cooling channel 211, which is located between the second main cooling channels 25. The bottom of the cylinder head body 11 is provided with a second auxiliary water inlet 210 that communicates with the second auxiliary cooling channel 211.

[0043] As can be seen from the above, the coolant can be introduced into the second auxiliary cooling channel 211 through the second auxiliary water inlet 210. The second auxiliary cooling channel 211 is distributed in the area between the second main cooling channel 25, which can absorb heat in a wider area near the exhaust channel 14, thereby enhancing the cooling effect of the first water jacket mechanism 2 on the area around the exhaust channel 14. This allows the area around the exhaust channel 14 to be cooled more evenly and fully. Together with the first auxiliary cooling channel 27, it enhances the cooling capacity of the entire first water jacket mechanism 2 on the key area at the bottom of the cylinder head body 11.

[0044] Working principle: When the engine is running, coolant enters the cylinder head through the water passages on the engine block via the first main inlet 22, the second main inlet 24, and the inlet hole 31. Coolant entering the first main inlet 22 flows into the first main cooling channel 23, absorbing heat along the periphery of the intake channel 13, and then enters the manifold 28. Coolant entering the second main inlet 24 flows into the second main cooling channel 25, absorbing heat along the periphery of the exhaust channel 14, and also enters the manifold 28. The manifold 28 collects the coolant from each cooling channel of the first water jacket mechanism 2 and discharges it through the outlet 21, completing the first water jacket mechanism... The coolant circulation within the second water jacket mechanism 3 involves the coolant entering the inlet 31 and flowing through the delivery pipe 32 into the cooling ring pipe 33. The cooling ring pipe 33 is distributed around the spark plug mounting groove 15, evenly absorbing the heat generated at the spark plug location. After absorbing the heat, the coolant flows through the delivery pipe 32 into the outlet channel 34 and then through the drain pipe 35 to the outlet 21 for discharge, completing the coolant circulation within the second water jacket mechanism 3. This achieves targeted cooling of different areas of the cylinder head, avoiding the problems of uneven distribution of cooling channels and repeated heat absorption by the coolant in traditional cylinder head systems. This allows for more uniform cooling of all parts of the cylinder head, effectively improving the cooling effect and ensuring stable engine operation under various operating conditions.

[0045] Example 2:

[0046] Reference Appendix Figure 5 As shown, the rear end of the manifold 28 is connected to a second auxiliary cooling channel 211, which is located between the second main cooling channels 25. The bottom of the cylinder head body 11 is provided with a second auxiliary water inlet 210 that communicates with the second auxiliary cooling channel 211.

[0047] As can be seen from the above, coolant is introduced into the second secondary cooling channel 211 through the second secondary inlet 210. The second secondary cooling channel 211 is located in the gap of the second main cooling channel 25, which can expand the cooling coverage of the area around the exhaust channel 14. This ensures that the area is not only cooled by the second main cooling channel 25, but also receives additional cooling through the second secondary cooling channel 211. This enhances the cooling uniformity and intensity of the area near the exhaust channel 14, effectively improves the cooling efficiency, and prevents local overheating. The second secondary cooling channel 211 can guide the coolant that has absorbed heat into the manifold 28, which can then be directed to the outlet 21 and discharged through the drainage system.

[0048] Reference Appendix Figure 1 As shown, an air inlet 12 is provided at the front end of the cylinder head body 11, and the air inlet 12 is connected to the air intake channel 13.

[0049] As can be seen from the above, the air intake 12 allows outside air to enter the intake passage 13 smoothly, providing the engine with the necessary combustion air.

[0050] Reference Appendix Figure 3 As shown, the cylinder head body 11 has an exhaust port 16 at its rear end, and the exhaust port 16 is connected to the exhaust channel 14.

[0051] As can be seen from the above, the exhaust gas produced after the engine combustion can be smoothly discharged from the exhaust passage 14 through the exhaust port 16, ensuring the normal exhaust process of the engine and maintaining the gas circulation balance inside the engine.

[0052] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An engine dual layer water jacket aluminum alloy cylinder head that realizes uniform cooling, characterized by, include: An aluminum alloy cylinder head mechanism (1) and a first water jacket mechanism (2) and a second water jacket mechanism (3) respectively assembled inside the aluminum alloy cylinder head mechanism (1). The aluminum alloy cylinder head mechanism (1) includes a cylinder head body (11), with an intake channel (13) and an exhaust channel (14) respectively opened at the bottom of the cylinder head body (11), and a spark plug mounting groove (15) opened at the top of the cylinder head body (11). The first water jacket mechanism (2) includes a manifold (28) opened at the bottom of the cylinder head body (11). The front end of the manifold (28) is connected to a first main cooling channel (23) corresponding to the air intake channel (13). The bottom of the cylinder head body (11) is provided with a first main water inlet (22) connected to the first main cooling channel (23). The rear end of the manifold (28) is connected to a second main cooling channel (25) corresponding to the air outlet channel (14). The bottom of the cylinder head body (11) is provided with a second main water inlet (24) connected to the second main cooling channel (25). The second water jacket mechanism (3) includes a cooling ring pipe (33) opened inside the cylinder head body (11). The cooling ring pipe (33) wraps around the spark plug mounting groove (15). The cooling ring pipes (33) are interconnected by a delivery pipe (32). A water inlet hole (31) is opened on one side of the delivery pipe (32). The water inlet hole (31) extends to the bottom of the cylinder head body (11). A water outlet channel (34) is connected to the other side of the delivery pipe (32).

2. The engine aluminum alloy dual-layered water jacketed cylinder head with uniform cooling according to claim 1, wherein, A water outlet (21) is provided on one side of the cylinder head body (11), and the manifold (28) and the water outlet (21) are interconnected.

3. The engine aluminum alloy dual-rib water jacketed cylinder head with uniform cooling according to claim 2, wherein, The water outlet channel (34) and the water outlet (21) are connected to each other through the drain pipe (35), and the top of the manifold (28) is provided with a through hole (29) corresponding to the spark plug mounting groove (15).

4. The engine aluminum alloy dual-rib water jacketed cylinder head with uniform cooling according to claim 1, wherein, The front end of the manifold (28) is connected to a first auxiliary cooling channel (27), which is located between the first main cooling channels (23). The bottom of the cylinder head body (11) is provided with a first auxiliary water inlet (26) that is connected to the first auxiliary cooling channel (27).

5. The engine aluminum alloy dual-rib water jacketed cylinder head with uniform cooling according to claim 1, wherein, The rear end of the manifold (28) is connected to a second auxiliary cooling channel (211), which is located between the second main cooling channels (25). The bottom of the cylinder head body (11) is provided with a second auxiliary water inlet (210) that is connected to the second auxiliary cooling channel (211).

6. An engine aluminum alloy dual-rib water jacketed cylinder head with uniform cooling according to claim 1, wherein, The cylinder head body (11) has an air inlet (12) at its front end, and the air inlet (12) and the air intake channel (13) are interconnected.

7. An engine aluminum alloy dual-rib water jacketed cylinder head with uniform cooling according to claim 1, wherein, The cylinder head body (11) has an air outlet (16) at its rear end, and the air outlet (16) is connected to the air outlet channel (14).

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