Cylinder body cooling liquid jacket, diesel engine and vehicle

Abstract

The invention relates to a cylinder body cooling liquid jacket, a diesel engine and a vehicle, the cylinder body cooling liquid jacket is used for cooling an air cylinder, the cylinder body cooling liquid jacket comprises a liquid separation mechanism and a liquid jacket mechanism, and liquid feeding openings spaced in the first direction are formed in the liquid separation mechanism, so that cooling liquid can enter different areas of a cylinder cover correspondingly; and through the liquid discharging openings formed in the first direction at intervals, cooling liquid in the cylinder cover enters different areas of the liquid sleeve through the liquid discharging openings, so that the cooling liquid is more evenly distributed, the cooling effect on different cylinder bodies is greatly improved, the cooling effects of the different cylinder bodies are closer, and the cooling efficiency is improved. And the situation that the temperature difference between different cylinder bodies is large, and excessive cooling or poor cooling occurs is avoided.

Description

Technical Field

[0001] The present application relates to the technical field of diesel engines, and in particular to a cylinder coolant jacket, a diesel engine and a vehicle. Background Art

[0002] As diesel engines develop towards high explosion pressure and high thermal efficiency, the cylinder body is subjected to greater thermal and mechanical loads during the operation of the diesel engine. Therefore, in order to ensure the reliability and durability of the diesel engine, a reasonable and effective cylinder cooling structure is necessary.

[0003] The cylinder coolant jacket in the related art can be installed on multiple cylinders at the same time. By passing coolant into the cylinder coolant jacket, the multiple cylinders can be cooled at the same time, thereby improving the performance of the diesel engine.

[0004] However, the cylinder coolant jacket which is simultaneously mounted on multiple cylinders has only one liquid inlet. When the coolant entering from one liquid inlet flows in the cylinder coolant jacket, there is a problem of uneven coolant flow distribution, resulting in different cooling effects on each cylinder, which in turn easily causes some cylinders to fail to achieve effective cooling. Summary of the invention

[0005] Based on this, it is necessary to provide a cylinder coolant jacket, a diesel engine and a vehicle in view of the fact that the existing cylinder coolant jacket is simultaneously mounted on multiple cylinders and has only one liquid inlet. When the coolant entering from one liquid inlet flows in the cylinder coolant jacket, there is a problem of uneven coolant flow distribution.

[0006] In a first aspect, an embodiment of the present application provides a cylinder coolant jacket, the cylinder coolant jacket being used to cool a plurality of cylinders simultaneously, the cylinder comprising a cylinder head and a cylinder block, the cylinder head covering and sealing the cylinder block, the cylinder head being provided with a cooling space independent of the cylinder block, the cylinder coolant jacket comprising:

[0007] A liquid separation mechanism, wherein a liquid separation cavity is disposed in the liquid separation mechanism, and the liquid separation mechanism is further provided with a liquid inlet communicated with the liquid separation cavity and a plurality of upper liquid ports communicated with the liquid separation cavity, wherein the plurality of upper liquid ports are arranged at intervals along a first direction, and the upper liquid ports are communicated with the corresponding cooling spaces in the cylinder head;

[0008] A liquid jacket mechanism, the liquid jacket mechanism comprising a first half jacket and a second half jacket, the first half jacket is configured with a plurality of first cooling grooves, the second half jacket is configured with a plurality of second cooling grooves, the plurality of first cooling grooves correspond to the plurality of second cooling grooves one by one, the first cooling grooves and the corresponding second cooling grooves together form a cooling cavity, and the arrangement direction of the plurality of cooling cavities is along the first direction;

[0009] The cooling cavity is used to accommodate the corresponding cylinder body; the liquid jacket mechanism is provided with a plurality of lower liquid ports communicating with the cooling space in the cylinder head, and the lower liquid ports are communicated with the cooling flow channel in the first half jacket or the second half jacket; the top of each cooling cavity is provided with a corresponding plurality of lower liquid ports;

[0010] The cooling channel inside the first half sleeve is connected to the cooling channel inside the second half sleeve, and the first half sleeve and / or the second half sleeve are provided with a liquid outlet.

[0011] In one embodiment, the liquid inlet is provided at one end of the liquid dispensing mechanism along the first direction;

[0012] A liquid guiding structure is provided on the cavity wall of the cooling cavity at one end of the liquid jacket mechanism away from the liquid inlet, and the liquid guiding structure is used to change the flow direction of the coolant in the cooling channel inside the liquid jacket mechanism;

[0013] The first half sleeve and the second half sleeve are respectively provided with the liquid guiding structure at one end away from the liquid inlet; the liquid guiding structure is recessed upward from the lower end of the liquid sleeve mechanism along the second direction.

[0014] In one embodiment, the liquid guiding structure includes a first side wall and a second side wall relative to each other, the upper end of the first side wall is connected to the upper end of the second side wall, and the lower end of the first side wall and the lower end of the second side wall are respectively inclined in directions away from each other.

[0015] In one embodiment, the liquid jacket mechanism is further provided with a coolant port at one end away from the liquid inlet, and the coolant port is connected to the cooling space in the cylinder head and the cooling channel;

[0016] The cooling liquid port and the liquid outlet are respectively located on two sides of the liquid jacket mechanism that are opposite to each other along the first direction.

[0017] In one of the embodiments, the cylinder block coolant jacket further includes a plurality of connecting mechanisms, which are respectively disposed between two adjacent cooling chambers, and the connecting mechanisms connect the internal space of the cylinder head and the cooling channel of the jacket mechanism.

[0018] In one embodiment, the communication mechanism includes a first communication pipe and a second communication pipe, wherein the first communication pipe and the second communication pipe are arranged crosswise and communicated at the intersection;

[0019] One end of the first connecting pipe is connected to the cylinder head, and the other end is connected to the first half sleeve; one end of the second connecting pipe is connected to the cylinder head, and the other end is connected to the second half sleeve.

[0020] In one embodiment, a communication port is provided between two adjacent cooling chambers, and the first communication pipe and the second communication pipe are located at the communication port.

[0021] In one of the embodiments, the lower liquid port is arranged corresponding to the cooling cavity, and a plurality of the lower liquid ports are arranged at intervals along the circumference of the cooling cavity.

[0022] In a second aspect, an embodiment of the present application further provides a diesel engine, comprising the above-mentioned cylinder coolant jacket, and also comprising a cylinder head and a cylinder body, wherein the cylinder head is arranged on the cylinder body, the cylinder head is connected to the upper liquid port of the liquid separation mechanism, and the cylinder head is connected to the lower liquid port of the liquid separation jacket.

[0023] In a second aspect, an embodiment of the present application further provides a vehicle, comprising the above-mentioned diesel engine, and further comprising a coolant module, wherein the coolant module is connected to the liquid inlet of the cylinder coolant jacket.

[0024] A cylinder coolant jacket, a diesel engine and a vehicle are also provided in the embodiments of the present application. The cylinder coolant jacket is used to cool the cylinders. The cylinder coolant jacket includes a liquid separation mechanism and a liquid jacket mechanism. An upper liquid port spaced along a first direction is provided on the liquid separation mechanism so that the coolant can enter different areas of the cylinder head respectively. Then, through a lower liquid port spaced along the first direction, the coolant in the cylinder head enters different areas of the liquid jacket through the lower liquid port, thereby making the coolant more evenly distributed, thereby greatly improving the cooling effect on different cylinders, making the cooling effect between different cylinders closer, and avoiding a large temperature difference between different cylinders, and overcooling or poor cooling. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A schematic structural diagram of a cylinder coolant jacket provided in some embodiments of the present application.

[0026] Figure 2 A schematic structural diagram of a liquid jacket mechanism of a cylinder coolant jacket provided in some embodiments of the present application.

[0027] Figure 3 A schematic structural diagram of a liquid separation mechanism of a cylinder coolant jacket provided in some embodiments of the present application.

[0028] Figure 4 for Figure 1 A partial enlarged view of point A in the middle.

[0029] Figure 5 for Figure 1 A partial enlarged view of point B in the middle.

[0030] Reference numerals:

[0031] 1. Liquid dispensing mechanism; 11. Liquid inlet; 12. Upper liquid inlet;

[0032] 2. Liquid jacket mechanism; 21. First half jacket; 22. Second half jacket; 23. Cooling chamber; 24. Lower liquid port; 25. Liquid outlet; 26. Cooling liquid port;

[0033] 3. liquid guiding structure; 31. first side wall; 32. second side wall;

[0034] 4. connecting mechanism; 41. first connecting pipe; 42. second connecting pipe;

[0035] X, first direction; Y, second direction. DETAILED DESCRIPTION

[0036] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0037] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "liquid level", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0038] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0039] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0040] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature has a higher liquid level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature has a lower liquid level than the second feature.

[0041] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If present, the terms "vertical", "liquid horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0042] like Figure 1-Figure 3 As shown, an embodiment of the present application provides a cylinder block coolant jacket, which is used to cool multiple cylinders at the same time. The cylinder includes a cylinder head and a cylinder block. The cylinder head covers and seals the cylinder block, and a cooling space independent of the cylinder block is provided inside the cylinder head.

[0043] The cylinder coolant jacket comprises a liquid separation mechanism 1 and a liquid jacket mechanism 2.

[0044] A liquid separation cavity is provided in the liquid separation mechanism 1, and the liquid separation mechanism 1 is further provided with a liquid inlet 11 communicating with the liquid separation cavity and a plurality of upper liquid ports 12 communicating with the liquid separation cavity, the plurality of upper liquid ports 12 are arranged at intervals along the first direction X, and the upper liquid ports 12 are communicated with the cooling space in the corresponding cylinder head;

[0045] The liquid jacket mechanism 2 includes a first half jacket 21 and a second half jacket 22. The first half jacket 21 is configured with a plurality of first cooling grooves, and the second half jacket 22 is configured with a plurality of second cooling grooves. The plurality of first cooling grooves correspond to the plurality of second cooling grooves one by one. The first cooling grooves and the corresponding second cooling grooves enclose a cooling cavity 23. The arrangement direction of the plurality of cooling cavities 23 is along the first direction X.

[0046] The cooling cavity 23 is used to accommodate the corresponding cylinder body; the liquid jacket mechanism 2 is provided with a plurality of lower liquid ports 24 communicating with the cooling space in the cylinder head, and the lower liquid ports 24 are communicated with the cooling flow channel in the first half jacket 21 or the second half jacket 22; the top of each cooling cavity 23 is provided with a corresponding plurality of lower liquid ports 24;

[0047] The cooling channel inside the first half sleeve 21 is connected to the cooling channel inside the second half sleeve 22 , and the first half sleeve 21 and / or the second half sleeve 22 is provided with a liquid outlet 25 .

[0048] In an embodiment of the present application, a cylinder coolant jacket is provided, which is used to cool the cylinder. The cylinder coolant jacket comprises a liquid separation mechanism 1 and a liquid jacket mechanism 2. By arranging upper liquid ports 12 spaced apart along a first direction X on the liquid separation mechanism 1, the coolant can enter different areas of the cylinder head respectively, and then through lower liquid ports 24 spaced apart along the first direction X, the coolant in the cylinder head enters different areas of the liquid jacket through the lower liquid ports 24, so that the coolant is more evenly distributed, thereby greatly improving the cooling effect on different cylinders, making the cooling effects between different cylinders closer, and avoiding large temperature differences between different cylinders, and overcooling or poor cooling.

[0049] It should be noted that the first direction X is the X direction, and the second direction Y is the Y direction.

[0050] Specifically, in the embodiment of the present application, the two liquid jackets are divided into a first half jacket 21 and a second half jacket 22 , and six cooling chambers 23 are surrounded between the first half jacket 21 and the second half jacket 22 .

[0051] like Figure 1 , Figure 2 and Figure 4 As shown, in some embodiments, the liquid inlet 11 is provided at one end of the liquid dispensing mechanism 1 along the first direction X;

[0052] A liquid guiding structure 3 is provided on the wall of the cooling cavity 23 at one end of the liquid jacket mechanism 2 away from the liquid inlet 11, and the liquid guiding structure 3 is used to change the flow direction of the coolant in the cooling channel inside the liquid jacket mechanism 2;

[0053] The first half sleeve 21 and the second half sleeve 22 are respectively provided with a liquid guiding structure 3 at one end away from the liquid inlet 11 ; the liquid guiding structure 3 is recessed upward from the lower end of the liquid sleeve mechanism 2 along the second direction Y.

[0054] By providing a liquid guiding structure 3 on the cavity wall of the cooling cavity 23 at the end of the liquid jacket mechanism 2 away from the liquid inlet 11, the flow direction of the coolant in the cooling channel inside the liquid jacket mechanism 2 is changed by the liquid guiding structure 3, which can greatly improve the cooling effect on the cylinder away from the liquid inlet 11 side, make the cooling effects between different cylinder bodies closer, and avoid large temperature differences between different cylinder bodies, resulting in overcooling or poor cooling.

[0055] like Figure 1 , Figure 2 and Figure 4 As shown, in some embodiments, the liquid-conducting structure 3 includes a first side wall 31 and a second side wall 32 opposite to each other, the upper end of the first side wall 31 and the upper end of the second side wall 32 are connected, and the lower end of the first side wall 31 and the lower end of the second side wall 32 are respectively inclined in directions away from each other.

[0056] By setting the first side wall 31 and the second side wall 32, the first side wall 31 is inclined toward the side away from the liquid inlet 11, and the second side wall 32 is inclined toward the side close to the liquid inlet 11, the first side wall 31 and the second side wall 32 are connected, and the first side wall 31 and the second side wall 32 are convex. The coolant flowing along the first direction X in the cooling liquid chamber flows toward the first side wall 31, and the coolant flowing in the cooling liquid chamber in the opposite direction of the first direction X flows toward the second side wall 32, thereby changing the flow direction of the coolant, which can greatly improve the cooling effect on the cylinder away from the liquid inlet 11, make the cooling effect between different cylinder bodies closer, and avoid a large temperature difference between different cylinder bodies, overcooling or poor cooling.

[0057] like Figure 1-Figure 3 As shown, in some embodiments, a coolant port 26 is further provided at one end of the liquid jacket mechanism 2 away from the liquid inlet 11, and the coolant port 26 connects the cooling space and the cooling channel in the cylinder head; the coolant port 26 and the liquid outlet 25 are respectively located on two sides of the liquid jacket mechanism 2 opposite to each other along the first direction X.

[0058] By adding a coolant port 26 at the end of the liquid jacket mechanism 2 away from the liquid inlet 11, the coolant can enter the end of the liquid jacket mechanism 2 away from the liquid inlet 11 through the coolant port 26, thereby further improving the cooling effect of the cylinder located at the end away from the liquid inlet 11, making the cooling effects of different cylinder bodies closer, avoiding large temperature differences between different cylinder bodies, and avoiding overcooling or poor cooling.

[0059] like Figure 1 , Figure 2 and Figure 5As shown, in some embodiments, the cylinder block coolant jacket further includes a plurality of connecting mechanisms 4, which are respectively disposed between two adjacent cooling chambers 23, and the connecting mechanisms 4 connect the internal space of the cylinder head and the cooling channel of the jacket mechanism 2.

[0060] By providing a connecting mechanism 4 between two adjacent cooling chambers 23, the coolant flow rate in the cooling channel of the cylinder head and the liquid jacket mechanism 2 can be accelerated, thereby further improving the cooling effect on the cylinder, and further greatly accelerating the cooling efficiency of the cylinder by the cylinder body coolant jacket.

[0061] like Figure 1 , Figure 2 and Figure 5 As shown, in some embodiments, the connecting mechanism 4 includes a first connecting tube 41 and a second connecting tube 42, and the first connecting tube 41 and the second connecting tube 42 are cross-arranged and connected at the intersection; one end of the first connecting tube 41 is connected to the cylinder head, and the other end is connected to the first half sleeve 21, and one end of the second connecting tube 42 is connected to the cylinder head, and the other end is connected to the second half sleeve 22.

[0062] By providing the first connecting pipe 41 and the second connecting pipe 42, on the one hand, the cooling effect on the cylinder can be further improved, thereby greatly accelerating the cooling efficiency of the cylinder coolant jacket on the cylinder; on the other hand, the coolant in the cylinder head can enter the jacket through the first connecting pipe 41 and the second connecting pipe 42, so that the coolant is more evenly distributed, and the flow rate and flow velocity of the coolant are accelerated, thereby greatly improving the cooling effect on different cylinders.

[0063] like Figure 1 , Figure 2 and Figure 5 As shown, in some embodiments, a communication port is provided between two adjacent cooling chambers 23, and the first communication pipe 41 and the second communication pipe 42 are located at the communication port. By providing a communication port between two adjacent cooling chambers 23, the heat in the cylinders in the two adjacent cooling chambers 23 can be exchanged in the two adjacent cooling chambers 23, so that the cylinder coolant jacket cools different cylinders more evenly, thereby improving the cooling effect.

[0064] like Figure 1-Figure 3 As shown, in some embodiments, the lower liquid port 24 is arranged corresponding to the cooling cavity 23 , and a plurality of lower liquid ports 24 are arranged, and the plurality of lower liquid ports 24 are arranged at intervals along the circumference of the cooling cavity 23 .

[0065] In addition, the lower liquid port 24 is arranged along the second direction Y. In the embodiment of the present application, the second direction Y is the height direction, so as to facilitate the coolant to enter the first half sleeve 21 or the second half sleeve 22.

[0066] When the engine is working, the coolant flows into the liquid separation mechanism 1 through the liquid inlet 11, flows through different upper liquid ports 12 in the liquid separation chamber, flows into different positions in the cylinder head, and then flows into different positions in the liquid jacket from the lower liquid port 24, the first connecting pipe 41, the second connecting pipe 42 and the coolant port 26 connected to different positions of the cylinder head, and finally flows out from the liquid outlet 25, thereby forming a cooling cycle, thereby realizing the cooling of the cylinder.

[0067] On the second aspect, an embodiment of the present application also provides a diesel engine, including the above-mentioned cylinder coolant jacket, and also including a cylinder head and a cylinder body, the cylinder head cover is arranged on the cylinder body, the cylinder head is connected to the upper liquid port 12 of the liquid separation mechanism 1, and the cylinder head is connected to the lower liquid port 24 of the liquid separation jacket.

[0068] In a third aspect, an embodiment of the present application further provides a vehicle, comprising the above diesel engine, and further comprising a coolant module, the coolant module being connected to the liquid inlet 11 of the cylinder coolant jacket. The coolant module is used to provide coolant to the cylinder coolant jacket.

[0069] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0070] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A cylinder coolant jacket, wherein the cylinder coolant jacket is used to cool multiple cylinders simultaneously, wherein the cylinder comprises a cylinder head and a cylinder block, wherein the cylinder head covers and seals the cylinder block, wherein a cooling space independent of the cylinder block is provided inside the cylinder head, wherein: The cylinder coolant jacket comprises: A liquid separation mechanism, wherein a liquid separation cavity is disposed in the liquid separation mechanism, and the liquid separation mechanism is further provided with a liquid inlet communicated with the liquid separation cavity and a plurality of upper liquid ports communicated with the liquid separation cavity, wherein the plurality of upper liquid ports are arranged at intervals along a first direction, and the upper liquid ports are communicated with the corresponding cooling spaces in the cylinder head; A liquid jacket mechanism, the liquid jacket mechanism comprising a first half jacket and a second half jacket, the first half jacket is configured with a plurality of first cooling grooves, the second half jacket is configured with a plurality of second cooling grooves, the plurality of first cooling grooves correspond to the plurality of second cooling grooves one by one, the first cooling grooves and the corresponding second cooling grooves together form a cooling cavity, and the arrangement direction of the plurality of cooling cavities is along the first direction; The cooling cavity is used to accommodate the corresponding cylinder body; the liquid jacket mechanism is provided with a plurality of lower liquid ports communicating with the cooling space in the cylinder head, and the lower liquid ports are communicated with the cooling flow channel in the first half jacket or the second half jacket; the top of each cooling cavity is provided with a corresponding plurality of lower liquid ports; The cooling channel inside the first half sleeve is connected to the cooling channel inside the second half sleeve, and the first half sleeve and / or the second half sleeve are provided with a liquid outlet.

2. The cylinder coolant jacket according to claim 1, characterized in that: The liquid inlet is arranged at one end of the liquid separation mechanism along the first direction; A liquid guiding structure is provided on the cavity wall of the cooling cavity at one end of the liquid jacket mechanism away from the liquid inlet, and the liquid guiding structure is used to change the flow direction of the coolant in the cooling channel inside the liquid jacket mechanism; The first half sleeve and the second half sleeve are respectively provided with the liquid guiding structure at one end away from the liquid inlet; the liquid guiding structure is recessed upward from the lower end of the liquid sleeve mechanism along the second direction.

3. The cylinder coolant jacket according to claim 2, characterized in that: The liquid guiding structure comprises a first side wall and a second side wall opposite to each other, the upper end of the first side wall is connected to the upper end of the second side wall, and the lower end of the first side wall and the lower end of the second side wall are respectively inclined in directions away from each other.

4. The cylinder coolant jacket according to claim 2, characterized in that: The liquid jacket mechanism is further provided with a coolant port at one end away from the liquid inlet, and the coolant port is connected with the cooling space in the cylinder head and the cooling channel; The cooling liquid port and the liquid outlet are respectively located on two sides of the liquid jacket mechanism that are opposite to each other along the first direction.

5. The cylinder coolant jacket according to claim 1, characterized in that: The cylinder block cooling liquid jacket also includes a plurality of connecting mechanisms, which are respectively arranged between two adjacent cooling chambers, and the connecting mechanisms connect the internal space of the cylinder head with the cooling flow channel of the liquid jacket mechanism.

6. The cylinder coolant jacket according to claim 5, characterized in that: The communication mechanism comprises a first communication pipe and a second communication pipe, wherein the first communication pipe and the second communication pipe are arranged crosswise and communicated at the intersection; One end of the first connecting pipe is connected to the cylinder head, and the other end is connected to the first half sleeve; one end of the second connecting pipe is connected to the cylinder head, and the other end is connected to the second half sleeve.

7. The cylinder coolant jacket according to claim 6, characterized in that: A communication port is provided between two adjacent cooling chambers, and the first communication pipe and the second communication pipe are located at the communication port.

8. The cylinder coolant jacket according to claim 1, characterized in that: The lower liquid port is arranged corresponding to the cooling cavity, and a plurality of the lower liquid ports are arranged at intervals along the circumference of the cooling cavity.

9. A diesel engine, characterized in that: It comprises the cylinder coolant jacket as described in any one of claims 1 to 8, and also comprises a cylinder head and a cylinder body, wherein the cylinder head is arranged on the cylinder body, the cylinder head is connected to the upper liquid port of the liquid separation mechanism, and the cylinder head is connected to the lower liquid port of the liquid separation jacket.

10. A vehicle, characterized in that It comprises the diesel engine as claimed in claim 9, and further comprises a coolant module, wherein the coolant module is connected to the liquid inlet of the cylinder coolant jacket.

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