Engine block cooling jacket structure for multi-cylinder engine

Abstract

The utility model discloses a body cooling water jacket structure of multi -cylinder engine belongs to engine technical field, including cylinder body, even installation in the water jacket of cylinder body inner top, the water channel of water jacket outside side, the one end of cylinder body is provided with the water inlet end, and the one end of cylinder body away from water inlet end is provided with the water outlet end, and the dispersion mechanism is set between the water inlet end and the water channel's lead -through place. The utility model discloses a water inlet end that water inlet and water inlet mouth constitute, and water inlet is along the height direction of water jacket and is provided with arc plate, guide piece, water hole and is provided with dispersion mechanism of the lead -through place of water inlet and water channel of setting, can drain the coolant at the water inlet mouth, and the coolant is dispersed and is discharged to the outside, reduces the cool and hot temperature difference of water jacket local, reduces the thermal stress in the water jacket inside, ensures the service life of water jacket.

Description

Technical Field

[0001] This utility model relates to a cooling water jacket structure, and more particularly to a cooling water jacket structure for a multi-cylinder engine, belonging to the field of engine technology. Background Technology

[0002] An engine water jacket is a sealed, coolant-filled channel space inside the engine block and cylinder head, surrounding the combustion chamber and other critical components. Its main function is to remove excess heat generated during engine operation by circulating coolant within the water jacket, preventing the engine from overheating.

[0003] In the prior art, such as the utility model with application number 202221491362.1, a cooling water jacket structure for a multi-cylinder engine is disclosed. In order to solve the problem that the flow dead zone is easily formed in the water jacket, resulting in poor cooling, thermal deformation of the cylinder structure, and thus large thermal strain, which reduces the strength and life of the cylinder block, the first baffle and the second baffle are connected inside the water channel. The first baffle and the second baffle form an S-shaped flow channel inside each cylinder block. This facilitates the flow of cooling water from front to back and from bottom to top inside each cylinder block, avoids uneven cooling temperature of cooling water inside the front and rear cylinder blocks, which reduces the strength and life of the cylinder block, and ensures uniform cooling of the cylinder block to prevent cylinder block deformation and ensure the service life of the cylinder block.

[0004] The above-mentioned applications still have shortcomings:

[0005] During the coolant circulation process, the temperature at the inlet end is low. A large flow of low-temperature liquid directly impacts a local area of ​​the water jacket, resulting in a large temperature difference between hot and cold at that point. This generates significant internal stress inside the water jacket. If this thermal stress is repeated or exceeds the material's ultimate strength, it will cause cracks in the water jacket, affecting its service life.

[0006] To address these issues, a multi-cylinder engine cooling water jacket structure was designed. Utility Model Content

[0007] The main purpose of this invention is to provide a cooling water jacket structure for a multi-cylinder engine to solve the problems mentioned in the background art.

[0008] The objective of this utility model can be achieved by adopting the following technical solution:

[0009] The cooling water jacket structure of a multi-cylinder engine includes a cylinder block, a water jacket evenly installed on the top of the cylinder block, and a water channel located on the outer side of the water jacket. One end of the cylinder block is provided with a water inlet, and the other end of the cylinder block away from the water inlet is provided with a drain end. A dispersing mechanism is provided between the water inlet and the water channel.

[0010] Preferably, the water inlet includes a water inlet chamber and a water inlet. The water inlet chamber is set along the height direction of the water jacket, and the water inlet is set at the bottom of the outer side of the water inlet chamber. There is a strip-shaped opening between the water inlet chamber and the water channel.

[0011] Preferably, the dispersing mechanism includes an arc-shaped plate, guide plates, and water holes. The arc-shaped plate is vertically fixed at the bottom of the waterway near the strip-shaped opening. There is a gap between the arc-shaped plate and the strip-shaped opening. Guide plates are evenly distributed on the outer side of the arc-shaped plate along the height direction. Water holes are evenly distributed at the middle position on the outer side of the arc-shaped plate.

[0012] Preferably, the thickness at the middle position of the arc-shaped plate is greater than the thickness on both sides, and the water holes are arranged in three rows evenly and vertically.

[0013] Preferably, the drain end includes a drain chamber and a drain outlet. The drain chamber is vertically opened on the side of the cylinder away from the water inlet. The drain chamber is connected to the water channel. A drain outlet is opened on the top of the outer side of the drain chamber.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This utility model uses an inlet end consisting of an inlet chamber and an inlet. The inlet chamber is set along the height direction of the water jacket, and a dispersion mechanism consisting of an arc plate, a guide plate, and water holes is set at the connection between the inlet chamber and the water channel. This mechanism can guide the coolant at the inlet and disperse the coolant to the outside, reduce the local temperature difference of the water jacket, reduce the thermal stress inside the water jacket, and ensure the service life of the water jacket. Attached Figure Description

[0016] Figure 1 This is the front view of the present invention;

[0017] Figure 2 This is a partial cross-sectional view of the present invention;

[0018] Figure 3 For the present utility model Figure 2 Enlarged view of point A in the middle;

[0019] Figure 4 This is a diagram of the dispersing mechanism of this utility model.

[0020] In the diagram: 1. Cylinder block;

[0021] 2. Water jacket;

[0022] 3. Waterway;

[0023] 4. Water inlet end; 401. Water inlet chamber; 402. Water inlet;

[0024] 5. Drainage end; 501. Drainage compartment; 502. Drainage outlet;

[0025] 6. Dispersion mechanism; 601. Arc plate; 602. Guide plate; 603. Water hole. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model.

[0027] Therefore, the following detailed description of the embodiments of this utility model is not intended to limit the scope of the claimed utility model, but merely to illustrate some embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0028] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0029] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0030] In the description of this utility model, it should be noted that the terms "upper," "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use, or the orientation or positional relationship commonly understood by those skilled in the art. These terms are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0031] Example 1

[0032] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, this embodiment proposes a cooling water jacket structure for a multi-cylinder engine, including a cylinder block 1, a water jacket 2 uniformly installed on the top of the cylinder block 1, and a water channel 3 located on the outer side of the water jacket 2. One end of the cylinder block 1 is provided with a water inlet end 4, and the other end of the cylinder block 1 away from the water inlet end 4 is provided with a drain end 5. A dispersing mechanism 6 is provided between the water inlet end 4 and the water channel 3.

[0033] During cooling, the coolant enters the interior of the water channel 3 through the inlet 4. In order to avoid the large flow of coolant continuously impacting the local area of ​​the water jacket 2, the coolant entering the water channel 3 is dispersed by the dispersion mechanism 6 along the circumference of the water jacket 2 to reduce the temperature difference when the coolant comes into contact with the water jacket 2, reduce the generation of thermal stress, and protect the water jacket 2.

[0034] Example 2

[0035] The solution in Example 1 will be further described below with reference to its specific working method.

[0036] like Figure 3 As shown, in a preferred embodiment, based on the above method, the water inlet end 4 further includes a water inlet chamber 401 and a water inlet 402. The water inlet chamber 401 is arranged along the height direction of the water jacket 2, and the water inlet 402 is provided at the bottom of the outer side of the water inlet chamber 401. There is a strip-shaped opening between the water inlet chamber 401 and the water channel 3.

[0037] The coolant enters the interior of the water inlet 401 through the water inlet 402. Since the water inlet 401 is set along the height of the water channel 3 and has a certain capacity, it will play a certain role in cooling the cylinder block 1 in the water inlet 401. The coolant temperature will rise to a certain extent. After entering the interior of the water channel 3, it has a large contact area with the water jacket 2 to reduce the temperature difference with the water jacket 2.

[0038] like Figure 3 and Figure 4 As shown, in a preferred embodiment, based on the above method, the dispersing mechanism 6 further includes an arc-shaped plate 601, a guide plate 602, and a water hole 603. The arc-shaped plate 601 is vertically fixed at the bottom of the water channel 3 near the strip-shaped opening. There is a gap between the arc-shaped plate 601 and the strip-shaped opening. The guide plate 602 is uniformly provided on the outer side of the arc-shaped plate 601 along the height direction. The water hole 603 is uniformly opened at the middle position on the outer side of the arc-shaped plate 601.

[0039] When the coolant enters the water channel 3, it first comes into contact with the arc-shaped plate 601. Since the middle position of the arc-shaped plate 601 is directly opposite the strip-shaped opening, the coolant adheres to the surface of the arc-shaped plate 601 and flows to both sides of the water jacket 2. During the flow process, the direct contact time with the water jacket 2 is extended, thus reducing the temperature difference at the time of contact. Some water passes through the inside of the water hole 603 and directly contacts the water jacket 2 at the part blocked by the arc-shaped plate 601, ensuring that the inside of the water channel 3 is filled with coolant.

[0040] like Figure 4 As shown, in a preferred embodiment, based on the above method, the thickness of the arc plate 601 at the middle position is greater than the thickness on both sides, and the water holes 603 are uniformly and vertically arranged in three rows.

[0041] After passing through the middle of the arc plate 601, the coolant will undergo initial cooling to reduce the temperature difference upon contact. The multiple sets of water holes 603 are designed to ensure that the area of ​​the water jacket 2 that is blocked is completely filled.

[0042] like Figure 2 As shown, in a preferred embodiment, based on the above method, the drain end 5 further includes a drain chamber 501 and a drain outlet 502. The drain chamber 501 is vertically opened on the side of the cylinder 1 away from the water inlet end 4. The drain chamber 501 is connected to the water channel 3. The drain outlet 502 is opened on the top of the outer side of the drain chamber 501.

[0043] After being heated, the coolant enters directly into the drain chamber 501 and is then discharged from the drain outlet 502.

[0044] Example 3

[0045] The solutions in Embodiments 1 and 2 will be further described below with reference to their specific working methods.

[0046] During cooling, the coolant enters the water inlet 401 through the inlet 402. Since the water inlet 401 is set along the height of the water channel 3 and has a certain capacity, it will have a certain cooling effect on the cylinder block 1. The coolant temperature will rise to a certain extent. After entering the water channel 3, it will first come into contact with the arc plate 601. Since the middle position of the arc plate 601 is directly opposite the strip-shaped opening, the coolant adheres to the surface of the arc plate 601 and flows to both sides of the water jacket 2. During the flow process, the direct contact time with the water jacket 2 is extended, thus reducing the temperature difference at contact. Some water passes through the inside of the water hole 603 and directly contacts the water jacket 2 at the part blocked by the arc plate 601, ensuring that the water channel 3 is full of coolant. After being heated, the coolant directly enters the drain chamber 501 and then is discharged from the drain outlet 502.

[0047] The above description is only a further embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the scope disclosed by the present utility model, based on the technical solution and concept of the present utility model, shall fall within the protection scope of the present utility model.

Claims

1. A cooling water jacket structure for a multi-cylinder engine, comprising a cylinder block (1), a water jacket (2) uniformly installed at the top of the cylinder block (1), and a water channel (3) located on the outer side of the water jacket (2), characterized in that: A water inlet (4) is provided at one end of the cylinder (1), and a drain (5) is provided at the other end of the cylinder (1) away from the water inlet (4). A dispersing mechanism (6) is provided between the water inlet (4) and the water channel (3).

2. The engine block cooling water jacket structure for a multi-cylinder engine according to claim 1, characterized in that: The water inlet (4) includes a water inlet chamber (401) and a water inlet (402). The water inlet chamber (401) is set along the height direction of the water jacket (2). The water inlet (402) is set at the bottom of the outer side of the water inlet chamber (401). There is a strip-shaped opening between the water inlet chamber (401) and the water channel (3).

3. The engine block cooling water jacket structure for a multi-cylinder engine according to claim 2, characterized in that: The dispersing mechanism (6) includes an arc plate (601), a guide plate (602), and a water hole (603). The arc plate (601) is vertically fixed at the bottom of the waterway (3) near the strip opening. There is a gap between the arc plate (601) and the strip opening. The guide plate (602) is evenly provided on the outer side of the arc plate (601) along the height direction. The water hole (603) is evenly provided at the middle position on the outer side of the arc plate (601).

4. The engine block cooling water jacket structure for a multi-cylinder engine according to claim 3, characterized in that: The thickness of the arc plate (601) in the middle position is greater than the thickness on both sides, and the water holes (603) are arranged in three rows evenly and vertically.

5. The engine block cooling water jacket structure for a multi-cylinder engine according to any one of claims 1-4, characterized in that: The drain end (5) includes a drain chamber (501) and a drain outlet (502). The drain chamber (501) is vertically opened on the side of the cylinder body (1) away from the water inlet end (4). The drain chamber (501) is connected to the water channel (3). The drain outlet (502) is opened on the top of the outer side of the drain chamber (501).

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