A cylinder head for an engine that can be cooled with multi-channel equalization

Abstract

The utility model relates to the related technical field of cylinder cover discloses a kind of multi-channel balanced cooling's engine cylinder cover, including cylinder cover body, cooling liquid inlet pipeline and cooling liquid return pipeline, the inside of the cylinder cover body is provided with main cooling cavity, the main cooling cavity is respectively connected with several groups of independent cooling channels, each group of independent cooling channels is spaced distribution along the length direction of cylinder cover body, the top surface of the cylinder cover body is embedded with several temperature sensors corresponding with independent cooling channel one-to-one setting.The multi-channel balanced cooling's engine cylinder cover, through the linkage of several groups of independent cooling channels and temperature sensor, flow regulating valve, cooling liquid flow can be accurately regulated and controlled for the thermal load difference of different regions of cylinder cover, eliminate the cooling blind area of traditional single waterway, the differential flow control of independent cooling channel, both guarantee high heating area cooling sufficient, avoid low heating area cooling excessive.

Description

Technical Field

[0001] This utility model relates to the technical field of cylinder heads, specifically to an engine cylinder head with multi-channel balanced cooling. Background Technology

[0002] During engine operation, the cylinder head, as a core component, must withstand the high temperature and pressure transmitted from the combustion chamber. The uniformity of its temperature distribution directly affects the engine's power performance, thermal efficiency, and service life. If the cylinder head temperature is too high in some areas, it can easily lead to problems such as valve seat erosion, cylinder head cracks, and scale buildup and blockage in the cooling water passages. This not only shortens the component replacement cycle but may also cause engine shutdown failures and increase maintenance costs. As disclosed in CN221942578U, an engine cylinder head assembly includes bolts, a cylinder head, and a cylinder head mounting bracket disposed at the bottom of the cylinder head. The cylinder head mounting bracket has several connecting holes at its bottom, and a threaded hole is formed at the bottom of the cylinder head opposite the connecting holes. Fixing grooves are formed in both the connecting holes and the threaded hole at the connection point between the cylinder head and the cylinder head mounting bracket. The bolts pass through the connecting holes and are threaded into the threaded holes. This design facilitates later maintenance and repairs, reduces carbon deposits in the combustion chamber, and extends engine lifespan. Furthermore, the fixing grooves and expansion blocks improve the connection between the cylinder head and the cylinder head mounting bracket, effectively reducing the possibility of separation between the cylinder head and the cylinder head mounting bracket under compression and combustion pressures. However, existing technologies do not address the differences in heat load in different areas of the cylinder head. For example, the heat demand differs between the intake and exhaust sides, and between the combustion chamber periphery and the cylinder head edge, but the flow rate and distribution of the cooling channels are not differentiated, resulting in low cooling efficiency. For instance, the comparative patents listed above have this problem. Therefore, this utility model provides an engine cylinder head with multi-channel balanced cooling to solve the problem of low cooling efficiency caused by the lack of targeted design for the heat load differences in different areas of the cylinder head, such as the different heat demands of the intake side and exhaust side, and the combustion chamber periphery and cylinder head edge. Utility Model Content

[0003] The purpose of this invention is to provide an engine cylinder head with multi-channel balanced cooling to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: an engine cylinder head with multi-channel balanced cooling, comprising a cylinder head body, a coolant inlet pipe, and a coolant return pipe; Also includes: The cylinder head body has a main cooling chamber inside, which is connected to several independent cooling channels. Each group of independent cooling channels is spaced apart along the length of the cylinder head body. Each group of independent cooling channels is equipped with a flow regulating valve. Several temperature sensors are embedded on the top surface of the cylinder head body, which correspond one-to-one with the independent cooling channels. The detection end of the temperature sensor extends into each group of independent cooling channels, and the temperature sensor is electrically connected to the flow regulating valve.

[0005] Preferably, the independent cooling channel includes a first cooling channel, a second cooling channel, and a confluence channel. The first cooling channel has several inlets at its front input end, and the inlets are connected to the main cooling chamber. The input end of the second cooling channel is connected to the coolant inlet pipe. The output ends of both the first and second cooling channels are connected to the input end of the confluence channel.

[0006] Preferably, the inner walls of the first cooling channel, the second cooling channel, and the confluence channel are all coated with an anti-rust coating.

[0007] Preferably, the output end of the manifold is connected to the coolant return pipeline via a flow regulating valve.

[0008] Preferably, the inner wall of the main cooling cavity is provided with a plurality of turbulence protrusions, and the turbulence protrusions are distributed at intervals along the circumference of the main cooling cavity.

[0009] Preferably, an inspection port is provided on the side of the main cooling cavity, and a detachable cover plate is engaged and installed in the middle of the inspection port. The cover plate is fitted with a sealing gasket on the outer side of the cylinder head body.

[0010] Preferably, the cover plate and the side of the cylinder head body are limited by fastening bolts that pass through the front and rear ends of the cover plate, and the outer surface of the fastening bolts is fitted with anti-slip rubber rings, while the anti-slip rubber rings are pressed between the end of the fastening bolts and the cover plate.

[0011] Compared with the prior art, the beneficial effects of this utility model are: the engine cylinder head with multi-channel balanced cooling can precisely control the coolant flow rate according to the heat load difference in different areas of the cylinder head through the linkage of several sets of independent cooling channels with temperature sensors and flow regulating valves, eliminating the cooling blind spots of traditional single water channels. The differentiated flow control of independent cooling channels ensures sufficient cooling in high-heat areas and avoids over-cooling in low-heat areas, reducing unnecessary energy consumption and extending the service life of the cylinder head. 1. It is equipped with independent cooling channels, including a first cooling channel, a second cooling channel and a confluence channel. Through the cooperation of multiple sets of independent cooling channels with temperature sensors and flow regulating valves, it achieves precise cooling and heat dissipation, avoiding local overheating or excessive heat dissipation. 2. Rust-proof coating and turbulence protrusions: The inner walls of the first cooling channel, the second cooling channel, and the confluence channel are all coated with rust-proof coating. The rust-proof coating ensures a relatively balanced flow distribution, extends the service life of the channels, and reduces the risk of scaling and blockage. The turbulence protrusions disrupt the laminar flow of the coolant in the main cooling chamber and enhance fluid turbulence, thereby improving the heat exchange efficiency between the coolant and the inner wall of the main cooling chamber and preventing local heat accumulation. 3. It is equipped with an inspection port and a cover plate. The inspection port is sealed by the cover plate. The design of the inspection port facilitates the cleaning or maintenance of the main cooling chamber in the future without disassembling the entire cylinder head, thus reducing maintenance costs. Attached Figure Description

[0012] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings: Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the structure of this utility model from below; Figure 3 This is a schematic diagram of the overall structure of the independent cooling channel, coolant inlet pipe, and coolant return pipe of this utility model; Figure 4 This is a schematic diagram of the overall structure of the independent cooling channel of this utility model; Figure 5 This is a bottom view of the temperature sensor, main cooling chamber, and cylinder head body of this utility model. Figure 6 This is an exploded structural diagram of the cylinder head body, inspection port, and cover plate of this utility model.

[0013] In the diagram: 1. Cylinder head body; 2. Main cooling chamber; 3. First cooling channel; 4. Second cooling channel; 5. Inlet; 6. Manifold; 7. Coolant inlet pipe; 8. Coolant return pipe; 9. Flow regulating valve; 10. Temperature sensor; 11. Turbidity protrusion; 12. Inspection port; 13. Cover plate; 14. Sealing gasket; 15. Fastening bolt; 16. Anti-slip rubber ring. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Please see Figures 1-6 The present invention provides the following technical solution: To address the problem of low cooling efficiency caused by the lack of targeted design for the different heat loads in different areas of the cylinder head in existing technologies, such as the different heat demands of the intake and exhaust sides, and the combustion chamber periphery and cylinder head edge, without differentiated matching of the flow rate and distribution of the cooling channels, this solution provides a multi-channel balanced cooling cylinder head for engines. The cylinder head body 1 includes a cylinder head body 1, a coolant inlet pipe 7, and a coolant return pipe 8. The cylinder head body 1 has a main cooling chamber 2 inside, which is connected to several independent cooling channels. These independent cooling channels are spaced apart along the length of the cylinder head body 1. Each independent cooling channel is equipped with a flow regulating valve 9. Several temperature sensors 10, corresponding one-to-one with the independent cooling channels, are embedded on the top surface of the cylinder head body 1. The detection end of each temperature sensor 10 extends into the independent cooling channel, and the temperature sensor 10 is electrically connected to the flow regulating valve 9. like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, during engine operation, the coolant is directly distributed through the coolant inlet pipe 7 to the second cooling channel 4 of each group of independent cooling channels. The coolant can also first enter the main cooling chamber 2 inside the cylinder head body 1, where it undergoes preliminary heat exchange with the cylinder head body 1 before entering the first cooling channel 3 of each group of independent cooling channels through the inlet 5. The temperature sensor 10 can detect the temperature of the coolant in the corresponding independent cooling channel in real time, indirectly reflecting the temperature of the cylinder head body 1 in the corresponding area of ​​the channel. When the temperature in a certain area exceeds a preset threshold, the temperature sensor 10 will send a signal. The flow rate is transmitted to the corresponding channel's flow regulating valve 9. The flow regulating valve 9 increases its opening to increase the coolant flow and enhance the cooling effect. Conversely, if the temperature is below the threshold, the flow regulating valve 9 decreases its opening to reduce the flow and avoid overcooling. The coolant from the first cooling channel 3 and the second cooling channel 4 merges in the confluence channel 6. After fully absorbing the heat of the cylinder head body 1 in the corresponding area, it flows back through the coolant return pipe 8 to complete one cooling cycle. In addition, the turbulence protrusions 11 inside the main cooling chamber 2 can disrupt the coolant flow trajectory and avoid insufficient heat exchange caused by local slow flow rate. When maintenance and cleaning are required, the fastening bolts 15 used for limiting can be directly removed. The fastening bolts 15 loosen their limiting effect on the cover plate 13 and the cylinder head body 1. At the same time, the outer surface of the fastening bolts 15 is fitted with anti-slip rubber rings 16, which are pressed between the end of the fastening bolts 15 and the cover plate 13. The anti-slip rubber rings 16 can improve the tightness of the fastening bolts 15. The cover plate 13 and the outer side of the cylinder head body 1 are fitted with sealing gaskets 14 to improve the sealing performance. Then, the cover plate 13 can be directly removed to loosen the seal on the inspection port 12, which facilitates the cleaning or maintenance of the main cooling chamber 2 in the future.

[0016] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0017] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An engine cylinder head with multi-channel balanced cooling, comprising a cylinder head body (1), a coolant inlet pipe (7) and a coolant return pipe (8); Its features are, Also includes: The cylinder head body (1) has a main cooling chamber (2) inside. The main cooling chamber (2) is connected to several independent cooling channels. Each group of independent cooling channels is distributed at intervals along the length of the cylinder head body (1). Each group of independent cooling channels is equipped with a flow regulating valve (9). The top surface of the cylinder head body (1) is fitted with several temperature sensors (10) that correspond one-to-one with the independent cooling channels. The detection end of the temperature sensor (10) extends into each group of independent cooling channels, and the temperature sensor (10) is electrically connected to the flow regulating valve (9).

2. The engine cylinder head with multi-channel balanced cooling according to claim 1, characterized in that: The independent cooling channel includes a first cooling channel (3), a second cooling channel (4) and a confluence channel (6). The first cooling channel (3) has several inlets (5) at its front input end, and the inlets (5) are connected to the main cooling chamber (2). The input end of the second cooling channel (4) is connected to the coolant inlet pipe (7). The output ends of the first cooling channel (3) and the second cooling channel (4) are both connected to the input end of the confluence channel (6).

3. The engine cylinder head with multi-channel balanced cooling according to claim 2, characterized in that: The inner walls of the first cooling channel (3), the second cooling channel (4) and the confluence channel (6) are all coated with an anti-rust coating.

4. The engine cylinder head with multi-channel balanced cooling according to claim 3, characterized in that: The output end of the manifold (6) is connected to the coolant return pipeline (8) through the flow regulating valve (9).

5. The engine cylinder head with multi-channel balanced cooling according to claim 1, characterized in that: The inner wall of the main cooling cavity (2) is provided with a number of turbulence protrusions (11), and the turbulence protrusions (11) are distributed at intervals along the circumference of the main cooling cavity (2).

6. The engine cylinder head with multi-channel balanced cooling according to claim 1, characterized in that: The main cooling chamber (2) has an inspection port (12) on its side, and a detachable cover plate (13) is fitted into the middle of the inspection port (12). The cover plate (13) is fitted with a sealing gasket (14) on the outer side of the cylinder head body (1).

7. An engine cylinder head with multi-channel balanced cooling according to claim 6, characterized in that: The cover plate (13) and the side of the cylinder head body (1) are limited by fastening bolts (15) that pass through the front and rear ends of the cover plate (13). The outer surface of the fastening bolts (15) is fitted with anti-slip rubber rings (16), and the anti-slip rubber rings (16) are squeezed between the end of the fastening bolts (15) and the cover plate (13).

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