Cylinder cover water jacket and vehicle

Abstract

The utility model discloses a cylinder cover water jacket and a vehicle, the cylinder cover water jacket comprises an upper water jacket and a lower water jacket, the upper water jacket is installed above the lower water jacket, the upper water jacket and the lower water jacket are respectively communicated with a water inlet pipe, and an intermediate cooling flow channel is communicated between the upper water jacket and the lower water jacket; wherein the upper water jacket is provided with an upper water outlet flow channel, the lower water jacket is provided with a lower water outlet flow channel, and the circulation cross section area of the upper water outlet flow channel is larger than the circulation cross section area of the middle cooling flow channel or the circulation cross section area of the lower water outlet flow channel. According to the cylinder cover water jacket, the channels of the upper water jacket and the lower water jacket are arranged reasonably, chip removal of the upper water jacket is more convenient, aluminum chips falling into the cylinder cover during machining can be discharged smoothly, and it is guaranteed that the cleanliness of the cylinder cover is qualified.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle engines, in particular to a cylinder head water jacket and a vehicle. Background Art

[0002] An engine component that forms a combustion chamber with the cylinder block and provides support and mounting structure for the valve train, ignition system, etc. It itself is composed of basic structures such as the oil chamber, lubricating oil channel, water jacket, combustion chamber, intake and exhaust ducts, and outer mold.

[0003] In some double-layer water jackets, there is a big difference in chip removal between the upper and lower water jackets, and the channel layout is unreasonable. For example, it is difficult to remove chips from the upper water jacket, which affects the cleanliness of the cylinder head. Aluminum chips enter the engine cooling system, wear cooling system components and reduce the cooling effect. In severe cases, the engine loses function. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide a cylinder head water jacket, the channels of the upper water jacket and the lower water jacket are arranged reasonably, and the upper water jacket is more convenient for chip removal, so that aluminum chips dropped during processing can be smoothly discharged, and the cleanliness of the cylinder head is guaranteed to be qualified.

[0005] The cylinder head water jacket according to the embodiment of the utility model comprises: an upper water jacket and a lower water jacket, wherein the upper water jacket is installed above the lower water jacket, the upper water jacket and the lower water jacket are respectively connected with a water inlet pipe, and an intermediate cooling flow channel is connected between the upper water jacket and the lower water jacket; wherein the upper water jacket is provided with an upper water outlet flow channel, and the lower water jacket is provided with a lower water outlet flow channel, and the flow cross-sectional area of ​​the upper water outlet flow channel is greater than the flow cross-sectional area of ​​the intermediate cooling flow channel or the flow cross-sectional area of ​​the lower water outlet flow channel.

[0006] According to the cylinder head water jacket of the embodiment of the utility model, the water flowing from the water inlet pipe to the water jacket can not only cool the cylinder head, but also discharge the aluminum chips flowing into the cylinder head water jacket, the aluminum chips in the upper water jacket flow out through the upper water outlet flow channel, and the aluminum chips in the lower water jacket flow out through the lower water outlet flow channel, and the upper and lower water jackets are connected through the intermediate cooling flow channel, and the flow cross-sectional area of ​​the upper water outlet flow channel of the upper water jacket is designed to be larger than the cross-sectional area of ​​the intermediate cooling flow channel or the lower water outlet flow channel, so that the coolant flowing from the water inlet pipe to the upper water jacket can more easily bring out the aluminum chips at the upper water outlet flow channel, so that the aluminum chips dropped into the water jacket during processing can be discharged smoothly in both the upper water jacket and the lower water jacket, thereby ensuring that the cylinder head has a qualified cleanliness.

[0007] According to the cylinder head water jacket of the embodiment of the utility model, the upper water jacket includes a plurality of first cylinder areas connected along a first direction, and each of the upper water outlet channels is located between adjacent first cylinder areas.

[0008] According to the cylinder head water jacket of the embodiment of the utility model, each of the first cylinder area includes a first exhaust duct hole and a first intake duct hole distributed along the second direction, and the upper water outlet channel is located on a side of the upper water jacket close to the first exhaust duct hole.

[0009] According to the cylinder head water jacket of the embodiment of the utility model, the flow cross-sections of the upper water outlet channel and the intermediate cooling channel are circular, the flow cross-section diameter of the upper water outlet channel is L1, the flow cross-section diameter of the intermediate cooling channel is L2, and it satisfies: L1≥2L2.

[0010] According to the cylinder head water jacket of an embodiment of the utility model, the lower water jacket includes a plurality of second cylinder body areas connected along a first direction, the lower water outlet channel includes a first water outlet channel and a second water outlet channel, the first water outlet channel is located at least between adjacent second cylinder body areas and is connected to the upper water jacket, and the second water outlet channel is located in each second cylinder body area.

[0011] According to the cylinder head water jacket of the embodiment of the utility model, the upper water outlet channel and the intermediate cooling channel are directly connected, and the upper water outlet channel and the first water outlet channel between adjacent cylinder bodies are staggered and distributed along the directions of the upper water jacket and the lower water jacket, respectively.

[0012] According to the cylinder head water jacket of the embodiment of the utility model, the second water outlet channel is communicated with the inner cavity of the lower water jacket and extends along a side away from the upper water jacket.

[0013] According to the cylinder head water jacket of the embodiment of the utility model, the number of the second water outlet channels in each second cylinder area is at least two, and the two second water outlet channels are located between two adjacent first water outlet channels.

[0014] According to the cylinder head water jacket of the embodiment of the utility model, the diameter of the flow cross section of the first water outlet flow channel is L3, the width of the flow cross section of the second water outlet flow channel is L4, and the following conditions are satisfied: L3≥10mm, L4≥10mm.

[0015] The utility model embodiment also discloses a vehicle, comprising the above-mentioned cylinder head water jacket.

[0016] The advantages of the vehicle described above over the prior art and the advantages of the cylinder head water jacket described above over the prior art are the same and will not be elaborated herein.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0019] Figure 1 This is a front view of a cylinder head water jacket according to an embodiment of the utility model;

[0020] Figure 2 is a top view of a cylinder head water jacket according to an embodiment of the utility model;

[0021] Figure 3 This utility model embodiment Figure 1 Cross-sectional view at AA.

[0022] Figure numerals: 100 - cylinder head water jacket; 1 - upper water jacket; 11 - upper water outlet channel; 12 - upper water inlet; 13 - first exhaust duct hole; 14 - first intake duct hole; 2 - lower water jacket; 21 - lower water outlet channel; 211 - first water outlet channel; 212 - second water outlet channel; 22 - lower water inlet; 23 - water inlet pipe; 24 - second intake duct hole; 3 - intermediate cooling channel. DETAILED DESCRIPTION

[0023] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0024] Reference below Figure 1-Figure 3 The cylinder head water jacket 100 according to the embodiment of the utility model is described. The water flowing from the water inlet pipe 23 to the cylinder head water jacket 100 can not only cool the cylinder head, but also discharge the aluminum chips flowing into the cylinder head water jacket 100. The aluminum chips in the upper water jacket 1 can flow out through the upper water outlet channel 11, and the aluminum chips in the lower water jacket 2 can flow out through the lower water outlet channel 21. The upper and lower water jackets 2 are connected through the intermediate cooling channel 3 to realize the connection between the water outlet of the lower water jacket 2 and the upper water jacket 1. The flow cross-sectional area of ​​the upper water outlet channel 11 of the upper water jacket 1 is designed to be larger than the cross-sectional area of ​​the intermediate cooling channel 3 or the lower water outlet channel 21, so that the coolant located in the upper water jacket 1 can more easily bring out the aluminum chips at the upper water outlet channel 11. The design of the upper water outlet channel 11, the intermediate cooling channel 3 and the lower upper water outlet channel 21 facilitates the smooth discharge of the aluminum chips dropped into the upper water jacket 1 and the lower water jacket 2 during processing, thereby ensuring that the cleanliness of the cylinder head is qualified.

[0025] like Figure 1-Figure 3 As shown, the cylinder head water jacket 100 according to the embodiment of the utility model comprises: an upper water jacket 1 and a lower water jacket 2 .

[0026] Among them, the upper water jacket 1 is installed above the lower water jacket 2, the upper water jacket 1 and the lower water jacket 2 are respectively connected with the water inlet pipe 23, and the upper water jacket 1 and the lower water jacket 2 are connected with an intermediate cooling channel 3; wherein, the upper water jacket 1 is provided with an upper water outlet channel 11, and the lower water jacket 2 is provided with a lower water outlet channel 21, and the flow cross-sectional area of ​​the upper water outlet channel 11 is greater than the flow cross-sectional area of ​​the intermediate cooling channel 3 or the flow cross-sectional area of ​​the lower water outlet channel 21.

[0027] In practice, the upper water jacket 1 and the lower water jacket 2 are connected as one body, and the upper water jacket 1 and the lower water jacket 2 are located in the engine cylinder head, and are used to cool the engine cylinder head, and can take away part of the heat of the engine cylinder body; the upper water jacket 1 and the lower water jacket 2 are respectively connected to the water inlet pipe 23, and water can be supplied to the upper water jacket 1 and the lower water jacket 2 through the water inlet pipe 23, and the engine cylinder liner can be cooled. While cooling, friction will occur between the various components inside the engine, especially under high temperature and high pressure environment, which will cause wear of some metal components, thereby generating aluminum chips. That is, while cooling the engine through the cooling water entering the cylinder head water jacket 100, some of the generated aluminum chips can also be taken away by the cooling water.

[0028] Of course, refer to Figure 1 As shown, one end of the upper water jacket 1 is provided with a water inlet pipe 23, and the water inlet pipe 23 is also directly connected with the lower water jacket 2, that is to say, the cooling water entering through the water inlet pipe 23 can flow into both the upper water jacket 1 and the lower water jacket 2, and the upper water jacket 1 is provided with an upper water inlet 12 at one end away from the water inlet pipe 23, and the lower water jacket 2 is provided with a lower water inlet 22 at one end away from the water inlet pipe 23. The cooling water directly enters the upper water jacket 1 through the upper water inlet 12 of the upper water jacket 1. At this time, the cooling water entering the upper water jacket 1 can flow out through the upper water outlet flow channel 11, and the cooling water directly enters the lower water jacket 2 through the lower water inlet 22 of the lower water jacket 2. The cooling water entering the lower water jacket 2 can flow out directly through the lower water jacket 2, and of course, it can also be connected between the upper water jacket 1 and the lower water jacket 2. Under the action of the intermediate cooling channel 3 connected between the upper water jacket 1 and the lower water jacket 2, a small amount of cooling water entering the upper water jacket 1 and the lower water jacket 2 is mixed, such that the cooling water entering the lower water jacket 2 flows to the upper water outlet channel 11 of the upper water jacket 1 through the intermediate cooling channel 3, or directly flows out through the lower water outlet channel 21 of the lower water jacket 2, or the cooling water of the upper water jacket 2 can flow out directly from the upper water outlet channel 11, or can flow into the lower water jacket 2 and flow out through the lower water outlet channel 21 of the lower water jacket 2 under the action of the intermediate cooling channel 3 between the upper water jacket 1 and the lower water jacket 2. During actual circulation, the cooling water and aluminum chips flow path can be determined according to the actual water pressure and water flow rate of the water inlet pipe 23, the lower water inlet 22, and the upper water inlet pipe 12.

[0029] That is to say, the cooling water entering the upper water jacket 1 can directly bring out the aluminum chips through the upper water outlet channel 11, and the cooling water entering the lower water jacket 2 can directly bring out the aluminum chips through the lower water outlet channel 21, and the upper water jacket 1 and the lower water jacket 2 are connected through the intermediate cooling channel 3, and the aluminum chips and cooling water of the lower water jacket 2 and the upper water jacket 1 can also achieve cross-circulation. At the same time, the cooling water that directly enters the upper water jacket 1 through the water inlet pipe 23 can also directly flow out through the upper water outlet channel 11. There are more selectable channels for the outflow of aluminum chips, which is convenient for rapid outflow.

[0030] In addition, the flow cross-sectional area of ​​the upper water outlet channel 11 of the upper water jacket 1 is designed to be larger than the cross-sectional area of ​​the intermediate cooling channel 3 or the lower water outlet channel 21, so that the coolant of the upper water jacket 1 can more easily bring out the aluminum chips directly from the upper water outlet channel 11, thereby ensuring the cleanliness of the cylinder head is qualified.

[0031] In some embodiments, the upper water jacket 1 includes a plurality of first cylinder areas connected along a first direction, and each upper water outlet channel 11 is located between adjacent first cylinder areas.

[0032] In practice, as shown in the embodiment of the present invention, the plurality of first cylinder areas of the upper water jacket 1 are connected to each other, and the first direction is Figure 2 In the left and right directions, of course, the first cylinder area can be set according to actual conditions, such as according to the cylinder matching setting of the engine, each first cylinder area is opposite to each cylinder of the engine, and each upper water outlet channel 11 is set between adjacent first cylinder areas, so that the coolant in the adjacent first cylinder areas can all flow out through the middle upper water outlet channel 11, so that the aluminum chips in the adjacent first cylinder areas can flow out through the middle upper water outlet channel 11. At the same time, in the adjacent first cylinder areas, there are not many holes, and the strength is guaranteed. At the same time, the upper water outlet channel 11 can also be set away from the narrow position in the water jacket structure to prevent the aluminum chips from falling into the narrow space and being difficult to remove.

[0033] In some embodiments, each first cylinder area includes a first exhaust duct hole 13 and a first intake duct hole 14 distributed along the second direction, and the upper water outlet channel 11 is located on a side of the upper water jacket 1 close to the first exhaust duct hole 13 .

[0034] In practice, the second direction is Figure 2 In the up-down direction, the first exhaust duct hole 13 and the first intake duct hole 14 of each first cylinder area are distributed along the second direction. Of course, the lower water jacket 2 also includes a second exhaust duct hole and a second intake duct hole 24. The second exhaust duct hole and the first exhaust duct hole 13 are located on the same side, that is, Figure 2The first exhaust duct hole 13 is located at the bottom of the first exhaust duct hole 13, and the second intake duct hole 24 and the first intake duct hole 14 are located on the same side. The first exhaust duct hole 13 and the second exhaust duct hole are used to install the exhaust duct, and the first intake duct hole 14 and the second intake duct hole 24 are used to install the intake duct. The intake duct supplies air to the engine cylinder block, and the exhaust duct is used to discharge the high-temperature gas after cooling the upper water jacket 1 and the lower water jacket 2.

[0035] The upper water outlet flow channel 11 is arranged on the side of the upper water jacket 1 close to the first exhaust duct hole 13, which can cool the high-temperature gas discharged from the exhaust duct and also take out the aluminum chips. Therefore, the upper water outlet flow channel 11 is arranged on the side of the upper water jacket 1 close to the first exhaust duct, which can improve the cooling effect of the discharged high-temperature gas and also discharge the aluminum chips.

[0036] In some embodiments, the flow cross-sections of the upper water outlet channel 11 and the intermediate cooling channel 3 are circular, the flow cross-section diameter of the upper water outlet channel 11 is L1, the flow cross-section diameter of the intermediate cooling channel 3 is L2, and satisfy: L1≥2L2.

[0037] In practice, if the upper water jacket 1 is designed with three circular upper water outlet channels 11, the cross-sectional area of ​​the upper water outlet channels 11 is 820 mm 2 , the recommended cross-sectional area is not less than 800mm 2 The number of upper water outlet channels 11 can be adjusted according to the different sizes of the cylinder head. The flow cross section of the upper water outlet channel 11 is circular, which makes it easier to remove aluminum chips. Different cross sections can also be designed according to different design spaces to ensure the size relationship of the flow cross sections of the upper water outlet channel 11 and the intermediate cooling channel 3.

[0038] Specifically, the upper water outlet channel 11 and the lower water outlet channel 21 can be set as water pipes. For example, the diameter of the upper water outlet channel 11 of the upper water jacket 1 is set to about 18 mm, and the diameter of the intermediate connected chip removal channels 10-12 is 9 mm, so that the upper water outlet channel 11 can be the main chip removal channel to accelerate the discharge of aluminum chips from the upper water jacket 1; in addition, the basic size of the upper water outlet channel 11 is 18 mm. Of course, the upper water outlet channel 11 can also be tapered from top to bottom, but the upper and lower differences of the upper water outlet channel 11 are small, that is, the maximum position can reach about 19 mm, and thus, the total cross-section is 820 mm. 2 At the same time, the number of upper water outlet channels 11 is less than that of lower water outlet channels 21, and the flow cross-section of the upper water outlet channels 11 is set larger than the flow cross-section of the lower water outlet channels 21, which can keep the cooling water of the upper water jacket 1 and the lower water jacket 2 discharged more evenly, and also make the aluminum chips discharged from the upper water outlet channels 11 more smoothly.

[0039] In some embodiments, the lower water jacket 2 includes a plurality of second cylinder areas connected along a first direction, the lower water outlet channel 21 includes a first water outlet channel 211 and a second water outlet channel 212, the first water outlet channel 211 is located at least between adjacent second cylinder areas and is connected to the upper water jacket 1, and the second water outlet channel 212 is located in each second cylinder area.

[0040] like Figure 1 As shown, the lower water jacket 2 includes multiple edges Figure 1 and Figure 2 The second cylinder areas connected in the left and right directions, the first water outlet channel 211 is set between the adjacent second cylinder areas, and the second cylinder area located at the end is close to the water inlet pipe 23 or the end close to the lower water inlet 22. The first water outlet channel 211 is also provided. At the same time, each second cylinder area is provided with a second water outlet channel 212, that is, the cooling water in the lower water jacket 2 flows out together through multiple first water outlet channels 211 and multiple second water outlet channels 212, and at the same time, the upper water outlet channel 11 is located between the adjacent first cylinder areas, the positions of the first cylinder area of ​​the upper water jacket 1 and the second cylinder area of ​​the lower water jacket 2 correspond one to one, and the number of the first water outlet channels 211 of the upper water jacket 1 is less than the number of the second water outlet channels 212 of the lower water jacket 2. Therefore, the flow cross-sectional area of ​​the first water outlet channel 211 of the upper water jacket 1 is set larger, so that the discharge of cooling water and aluminum chips from the upper water jacket 1 and the lower water jacket 2 can be kept balanced.

[0041] In addition, the cooling water and aluminum chips of the lower water jacket 2 can flow out not only from the first water outlet channel 211, but also from the second water outlet channel 212, so that the flow paths of the cooling water and aluminum chips in the lower water jacket 2 are dispersed and the flow paths of the cooling water and aluminum chips in the lower water jacket 2 are increased, ensuring that the cooling water and aluminum chips have more paths to flow out, thereby improving the cleanliness of the cylinder head.

[0042] In some embodiments, the upper water outlet channel 11 and the intermediate cooling channel 3 are directly connected, and the upper water outlet channel 11 and the first water outlet channel 211 between adjacent cylinder bodies are staggered along the direction of the upper water jacket 1 and the lower water jacket 2, respectively.

[0043] In practice, the upper water outlet channel 11 and the intermediate cooling channel 3 are directly connected, that is, after the cooling water and aluminum chips of the lower water jacket 2 flow to the upper water jacket 1, they can directly flow out from the upper water outlet channel 11 of the upper water jacket 1, shortening the flow path of the aluminum chips and making it easier to discharge the aluminum chips; or in other words, the cooling water of the upper water jacket 1 can directly flow to the lower water jacket 2 through the intermediate cooling channel 3, and flow out from the lower water outlet channel 21 of the lower water jacket 2.

[0044] Moreover, the first water outlet channel 211 not only extends downward along the lower water jacket 2, but also is connected with the upper water jacket 1. By staggering the upper water outlet channel 11 and the first water outlet channel 211, the upper water outlet channel 11 can be connected with the intermediate cooling channel 3. That is, the first water outlet channel 211 and the intermediate cooling channel 3 can be avoided and designed at different positions, which can not only enhance the connection and support effect of the upper water jacket 1 and the lower water jacket 2, but also increase the flow path of aluminum chips and cooling water.

[0045] In some embodiments, the second water outlet channel 212 is communicated with the inner cavity of the lower water jacket 2 and extends along a side facing away from the upper water jacket 1 .

[0046] In practice, the second water outlet channel 212 can be cast integrally with the lower water jacket 2. The second water outlet channel 212 is arranged on one side of the second air inlet duct hole 24. Of course, the second water outlet channel 212 is also arranged on one side of the second exhaust duct hole. Here, the second water outlet channel 212 on the second air inlet duct hole 24 side is mainly explained. When the cooling water cools the second air inlet duct hole 24 around the lower water jacket 2, the cooling water can flow out with the second water outlet channel 212, and the cooling water can also bring out the aluminum chips. Therefore, the second water outlet channel 212 can not only cool the specific position of the lower water jacket 2, but also form a part of multiple aluminum chip discharge channels to discharge the aluminum chips.

[0047] In some embodiments, each second cylinder area has at least two second water outlet channels 212 , and the two second water outlet channels 212 are located between two adjacent first water outlet channels 211 .

[0048] Among them, by setting up multiple second water outlet channels 212, firstly, the cooling water can be quickly discharged after the cooling water cools the lower water jacket 2, so as to prevent the cooling water from being in the lower water jacket 2 and the upper water jacket 1 for a long time after cooling and affecting the cooling effect. The cooling water can also quickly take out the aluminum chips. When there are two second water outlet channels 212, for example, a second water outlet channel 212 is set on the side of the second air inlet duct hole 24, and a second water outlet channel 212 is set on the side of the second exhaust duct hole; and the second water outlet channel 212 of the embodiment of the utility model is multiple, and two second water outlet channels 212 are set on the side of the second air inlet duct hole 24, and the two second water outlet channels 212 located on the side of the second air inlet duct hole 24 are distributed along the first direction, that is, Figure 1 In this way, the two second water outlet channels 212 located on the side of the second air intake duct hole 24 can not only cool the different positions of the second air intake duct hole 24, but also facilitate the outflow of cooling water and aluminum chips on the left and right sides of the corresponding second cylinder area.

[0049] In some embodiments, the diameter of the flow cross section of the first water outlet channel 211 is L3, the width of the flow cross section of the second water outlet channel 212 is L4, and the following conditions are satisfied: L3 ≥ 10 mm, L4 ≥ 10 mm.

[0050] In practice, the diameter of the first water outlet flow channel 211 is not less than 10 mm, and the width of the second water outlet flow channel 212 is not less than 10 mm, so that the cross-sectional area of ​​the plurality of first water outlet flow channels 211 and the second water outlet flow channels 212 is larger. For example, when there are two second water outlet flow channels 212 on the side of the second air intake duct hole 24, and there are multiple second water outlet flow channels 212 on the side of the second exhaust duct hole, the cross-sectional area of ​​the first water outlet flow channel 211 and the second water outlet flow channel 212 can reach at least 4300 mm. 2 It has been verified that the arrangement of the first water outlet channel 211 and the second water outlet channel 212 and the flow cross section can significantly reduce the man-hours for cleaning aluminum chips, generally by 50%.

[0051] The vehicle according to the embodiment of the utility model comprises the above-mentioned cylinder head water jacket 100. Aluminum chips in the upper water jacket 1 can flow out through the upper water outlet channel 11, and aluminum chips in the lower water jacket 2 can flow out through the lower water outlet channel 21, and the upper and lower water jackets 2 are connected through the intermediate cooling channel 3, so that the water outlet of the lower water jacket 2 and the upper water jacket 1 are connected, and the flow cross-sectional area of ​​the upper water outlet channel 11 of the upper water jacket 1 is designed to be larger than the cross-sectional area of ​​the intermediate cooling channel 3 or the lower water outlet channel 21, so that the coolant of the upper water jacket 1 can more easily bring out the aluminum chips at the upper water outlet channel 11, so that the aluminum chips dropped during processing can be discharged smoothly in both the upper water jacket 1 and the lower water jacket 2, and the cylinder head cleanliness is guaranteed to be qualified.

[0052] 1. In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0053] 2. In the description of the present utility model, "first feature" and "second feature" may include one or more of these features.

[0054] 3. In the description of this utility model, "plurality" means two or more.

[0055] 4. In the description of the present invention, a first feature “above” or “below” a second feature may include that the first and second features are directly in contact, or may include that the first and second features are not in direct contact but are in contact via another feature between them.

[0056] 5. In the description of the present utility model, the first feature “above”, “above” and “on” the second feature includes the first feature being directly above and diagonally above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0057] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0058] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A cylinder head water jacket, characterized in that: include: An upper water jacket and a lower water jacket, wherein the upper water jacket is installed above the lower water jacket, the upper water jacket and the lower water jacket are respectively connected to a water inlet pipe, and an intermediate cooling flow channel is connected between the upper water jacket and the lower water jacket; The upper water jacket is provided with an upper water outlet channel, and the lower water jacket is provided with a lower water outlet channel. The flow cross-sectional area of ​​the upper water outlet channel is greater than the flow cross-sectional area of ​​the intermediate cooling channel or the flow cross-sectional area of ​​the lower water outlet channel.

2. The cylinder head water jacket according to claim 1, characterized in that: The upper water jacket includes a plurality of first cylinder areas connected along a first direction, and each of the upper water outlet channels is located between adjacent first cylinder areas.

3. The cylinder head water jacket according to claim 2, characterized in that: Each of the first cylinder area includes a first exhaust duct hole and a first intake duct hole distributed along the second direction, and the upper water outlet channel is located on a side of the upper water jacket close to the first exhaust duct hole.

4. The cylinder head water jacket according to claim 1, characterized in that: The flow cross sections of the upper water outlet channel and the intermediate cooling channel are circular, the flow cross section diameter of the upper water outlet channel is L1, the flow cross section diameter of the intermediate cooling channel is L2, and the following condition is satisfied: L1≥2L2.

5. The cylinder head water jacket according to claim 1, characterized in that: The lower water jacket includes a plurality of second cylinder areas connected along a first direction, the lower water outlet channel includes a first water outlet channel and a second water outlet channel, the first water outlet channel is at least located between adjacent second cylinder areas and is connected to the upper water jacket, and the second water outlet channel is located in each second cylinder area.

6. The cylinder head water jacket according to claim 5, characterized in that: The upper water outlet channel and the intermediate cooling channel are directly connected, and the upper water outlet channel and the first water outlet channel between adjacent cylinder bodies are staggered and distributed along the direction of the upper water jacket and the lower water jacket, respectively.

7. The cylinder head water jacket according to claim 5, characterized in that: The second water outlet channel is communicated with the inner cavity of the lower water jacket and extends along a side away from the upper water jacket.

8. The cylinder head water jacket according to claim 7, characterized in that: Each second cylinder area has at least two second water outlet channels, and the two second water outlet channels are located between two adjacent first water outlet channels.

9. The cylinder head water jacket according to claim 5, characterized in that: The diameter of the flow cross section of the first water outlet flow channel is L3, the width of the flow cross section of the second water outlet flow channel is L4, and the following conditions are satisfied: L3≥10 mm, L4≥10 mm.

10. A vehicle, characterized in that: The invention comprises a cylinder head water jacket as claimed in any one of claims 1 to 9.

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