CN218235280U - Cylinder head cooling water jacket and engine - Google Patents
Cylinder head cooling water jacket and engine Download PDFInfo
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- CN218235280U CN218235280U CN202222712303.9U CN202222712303U CN218235280U CN 218235280 U CN218235280 U CN 218235280U CN 202222712303 U CN202222712303 U CN 202222712303U CN 218235280 U CN218235280 U CN 218235280U
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Abstract
The embodiment of the application discloses a cylinder cover cooling water jacket and an engine, wherein the cylinder cover cooling water jacket comprises a cylinder cover body and a partition plate, a cooling water cavity is arranged in the cylinder cover body, the partition plate is arranged in the cooling water cavity and divides the cooling water cavity into an upper water cavity and a lower water cavity, the upper water cavity is communicated with a water inlet, the lower water cavity is communicated with a water outlet, and a plurality of water cooling channels with different flow areas are arranged between the partition plate and a fuel injector bush; the cylinder head base plate of the cylinder head body is provided with a plurality of partitions, and the partitions are in one-to-one correspondence and communication with the water cooling channels. The cylinder cover bottom plate is partitioned according to the temperature, the flow area of the water cooling channel is set according to the partitioned temperature of the cylinder cover bottom plate, cooling water enters the water discharging cavity from the water feeding cavity through the water cooling channel and cools different partitions, the partitioned cooling of the cylinder cover bottom plate is realized, the cooling efficiency of the cylinder cover bottom plate is improved, and cracks caused by overlarge thermal stress are prevented.
Description
Technical Field
The application relates to the technical field of engines, in particular to a cylinder cover cooling water jacket and an engine.
Background
The cylinder cover is a main part of the engine and is used for sealing the top of the cylinder and forming a combustion space with the piston and the cylinder to ensure the smooth proceeding of the exhaust process of the engine.
The cooling water cavity of a common cylinder cover is a single-layer cavity, and cooling water flows in from a water inlet at the lower part and flows out from a water outlet at the upper part of the cylinder cover.
The mobility of cooling water in the single-layer water cavity is poor, the cooling efficiency to the cylinder head bottom plate is low, and cracks are generated due to overlarge thermal stress.
Therefore, how to improve the cooling efficiency of the cylinder head base plate becomes a technical problem to be solved urgently by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
The application provides a cylinder head cooling water jacket to improve the cooling efficiency of a cylinder head base plate. The application also provides an engine.
In order to achieve the above object, the present application provides a cylinder head cooling water jacket including:
the cylinder cover comprises a cylinder cover body, wherein a cooling water cavity is arranged in the cylinder cover body, the cylinder cover body is provided with a fuel injector bush positioned in the cooling water cavity, and the cylinder cover body is provided with a water inlet and a water outlet;
the partition plate is arranged in the cylinder cover body and used for separating the cooling water cavity into an upper water cavity and a lower water cavity, the upper water cavity is communicated with the water inlet, the lower water cavity is communicated with the water outlet, a plurality of water cooling channels with different circulation areas are arranged between the partition plate and the fuel injector bush, and the water cooling channels are communicated with the upper water cavity and the lower water cavity;
the cylinder head bottom plate of the cylinder head body is provided with a plurality of partitions, the partitions are in one-to-one correspondence with the water cooling channels and are communicated with the water cooling channels, the flow area of the water cooling channels communicated with the partitions with higher temperature is larger than the flow area of the water cooling channels communicated with the partitions with lower temperature.
Preferably, in the cylinder head cooling water jacket, the cylinder head base plate has four partitions, wherein a side of the cylinder head base plate close to the exhaust passage of the cylinder head is a first partition, a side of the cylinder head base plate close to the intake passage of the cylinder head body is a second partition, a side of the cylinder head base plate close to the first intake and exhaust nose bridge area of the cylinder head body is a third partition, and a side of the cylinder head base plate close to the second intake and exhaust nose bridge area of the cylinder head body is a fourth partition,
the number of the water cooling channels is four, and the four water cooling channels are respectively communicated with the first subarea, the second subarea, the third subarea and the fourth subarea.
Preferably, in the cylinder head cooling water jacket described above, a flow area of the water-cooling passage communicating with the first partition is larger than a flow area of the water-cooling passage communicating with the second partition.
Preferably, in the cylinder head cooling water jacket described above, a flow area of the water-cooling passage communicating with the third partition and the fourth partition is larger than a flow area of the water-cooling passage communicating with the second partition.
Preferably, in the cylinder head cooling water jacket described above, the water cooling passages communicating with the third partition and the fourth partition have the same flow area.
Preferably, in the cylinder head cooling water jacket described above, the partition plate is integrally formed with the cylinder head body.
Preferably, in the cylinder head cooling water jacket, a flow area of the water cooling passage in an axial direction of the injector liner gradually increases from an end distant from the cylinder head base plate to an end close to the cylinder head base plate.
Preferably, in the cylinder head cooling water jacket, the water cooling channel is an inclined channel, and a distance between one end of the water cooling channel far away from the cylinder head base plate and the injector bush is smaller than a distance between one end of the water cooling channel close to the cylinder head base plate and the injector bush.
Preferably, in the cylinder head cooling water jacket, the intervals between the adjacent water cooling passages are the same or different; and/or the presence of a gas in the gas,
the shapes of the adjacent water cooling channels are the same or different.
An engine comprising a cylinder head cooling water jacket, the cylinder head cooling water jacket being the cylinder head cooling water jacket disclosed in any one of the above aspects.
The cylinder head cooling water jacket provided by the embodiment of the application comprises a cylinder head body and a partition plate, wherein a cooling water cavity is arranged in the cylinder head body, the partition plate is arranged in the cooling water cavity and is used for separating the cooling water cavity into an upper water cavity and a lower water cavity, the upper water cavity is communicated with a water inlet, the lower water cavity is communicated with a water outlet, and a plurality of water cooling channels with different flow areas are arranged between the partition plate and a fuel injector bush; the cylinder head bottom plate of the cylinder head body is provided with a plurality of partitions, and the partitions are in one-to-one correspondence and communication with the water cooling channels. The cylinder head bottom plate is partitioned according to the temperature, the flow area of the water-cooling channel is set according to the temperature of the partition of the cylinder head bottom plate, the flow area of the water-cooling channel communicated with the partition with the higher temperature is larger than the flow area of the water-cooling channel communicated with the partition with the lower temperature, cooling water enters the water discharging cavity from the water feeding cavity through the water-cooling channel and cools different partitions, partition cooling of the cylinder head bottom plate is achieved, cooling efficiency of the cylinder head bottom plate is improved, and cracks caused by overlarge thermal stress are prevented.
An engine comprising a cylinder head cooling water jacket, the cylinder head cooling water jacket being the cylinder head cooling water jacket disclosed in any one of the above aspects. Since the cylinder head cooling water jacket has the technical effects, the engine with the cylinder head cooling water jacket also has the same technical effects, and the details are not repeated.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It is obvious that the drawings in the following description are only some examples or embodiments of the present application, and that for a person skilled in the art, other drawings can be obtained from the provided drawings without inventive effort, and that the present application can also be applied to other similar scenarios from the provided drawings. Unless otherwise apparent from the context, or otherwise indicated, like reference numbers in the figures refer to the same structure or operation.
FIG. 1 is a schematic structural view of a cylinder head cooling jacket of the present application;
FIG. 2 isbase:Sub>A cross-sectional view taken along A-A of FIG. 1;
fig. 3 is a sectional view taken along B-B in fig. 1.
Wherein:
1. the cylinder head comprises a cylinder head body, 2, an oil injector bush, 3, a partition plate, 4, a cylinder head bottom plate, 5, an upper water cavity, 6, a water cooling channel, 7, a lower water cavity, 8, a water inlet, 9, a water outlet, 10, a first partition, 11, a second partition, 12, a third partition, 13 and a fourth partition.
Detailed Description
The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant application and are not limiting of the application. The described embodiments are only some embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that, for the convenience of description, only the parts related to the related applications are shown in the drawings. The embodiments and features of the embodiments in the present application may be combined with each other without conflict.
It should be understood that "system", "apparatus", "unit" and/or "module" as used herein is a method for distinguishing different components, elements, parts or assemblies at different levels. However, other words may be substituted by other expressions if they accomplish the same purpose.
As used in this application and the appended claims, the terms "a," "an," "the," and/or "the" are not intended to be inclusive in the singular, but rather are intended to be inclusive in the plural unless the context clearly dictates otherwise. In general, the terms "comprises" and "comprising" merely indicate that steps and elements are included which are explicitly identified, that the steps and elements do not form an exclusive list, and that a method or apparatus may include other steps or elements. An element defined by the phrase "comprising a component of ' 8230 ' \8230; ' does not exclude the presence of additional identical elements in the process, method, article, or apparatus that comprises the element.
Wherein in the description of the embodiments of the present application, "/" indicates an inclusive meaning, for example, a/B may indicate a or B; "and/or" herein is merely an association relationship describing an associated object, and means that there may be three relationships, for example, a and/or B, and may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, in the description of the embodiments of the present application, "a plurality" means two or more than two.
In the following, the terms "first", "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.
Flow charts are used herein to illustrate operations performed by systems according to embodiments of the present application. It should be understood that the preceding or following operations are not necessarily performed in the exact order in which they are performed. Rather, the steps may be processed in reverse order or simultaneously. Meanwhile, other operations may be added to or removed from these processes.
Please refer to fig. 1-3. Some embodiments of the present application disclose a cylinder head cooling water jacket including a cylinder head body 1 and a partition plate 3.
The cylinder cover body 1 is provided with a fuel injector bush 2 positioned in the cooling water cavity, and the cylinder cover body 1 is provided with a water inlet and a water outlet.
The baffle 3 sets up in the cooling water intracavity, and the baffle 3 is used for separating the cooling water chamber and is gone up water chamber 5 and lower water chamber 7, goes up water chamber 5 and water inlet intercommunication, lower water chamber 7 and delivery port intercommunication. A plurality of water-cooling channels 6 with different flow areas are arranged between the partition plate 3 and the oil sprayer bushing 2, the water-cooling channels 6 are communicated with the upper water cavity 5 and the lower water cavity 7, and cooling water flows into the lower water cavity 7 from the upper water cavity 5 through the water-cooling channels 6.
The cylinder head bottom plate 4 of the cylinder head body 1 is provided with a plurality of partitions, the partitions are in one-to-one correspondence with and communicated with the water cooling channels 6, and the flow area of the water cooling channel 6 communicated with the partition with the higher temperature is larger than the flow area of the water cooling channel 6 communicated with the partition with the lower temperature.
This application sets up a plurality of water-cooling passageways 6 of different flow areas between baffle 3 and sprayer bush 2, and water-cooling passageway 6 just communicates with subregion one-to-one. The flow area of water-cooling channel 6 sets up according to the temperature of the different subregion of cylinder head bottom plate 4 in this application, the flow area of water-cooling channel 6 of the higher subregion intercommunication of temperature with cylinder head bottom plate 4 is big, the flow area of water-cooling channel 6 of the lower subregion intercommunication of temperature with cylinder head bottom plate 4 is little, this application carries out the subregion to lower water cavity 7 according to the temperature of cylinder head bottom plate 4 promptly, and design the flow area of water-cooling channel 6 according to the subregion temperature, realize the subregion cooling to cylinder head bottom plate 4, improve the cooling efficiency of cylinder head bottom plate 4, prevent because the too big crackle that produces of thermal stress.
Here, the flow area is a cross-sectional area of the water cooling passage 6 in a direction perpendicular to the axis of the injector liner 2.
In some embodiments of the present application, the number of the water cooling passages 6 is four, and the cylinder head bottom plate 4 is divided into four regions.
One side of the cylinder cover bottom plate 4 close to the exhaust passage of the cylinder cover body 1 is a first partition 10, one side of the cylinder cover bottom plate 4 close to the intake passage of the cylinder cover body 1 is a second partition 11, one side of the cylinder cover bottom plate 4 close to the first intake and exhaust nose bridge area of the cylinder cover body 1 is a third partition 12, and one side of the cylinder cover bottom plate 4 close to the second intake and exhaust nose bridge area of the cylinder cover body 1 is a fourth partition 13.
The intake and exhaust nose bridge area of the cylinder head body 1 refers to an area between an intake passage (the intake passage is a passage of gas entering the main combustion chamber in the cylinder head) of the cylinder head body 1 and an exhaust passage (the exhaust passage is a passage of gas exiting the main combustion chamber in the cylinder head) of the cylinder head body 1.
According to the scheme, the cylinder cover bottom plate 4 is not partitioned through a mechanical structure, but the cylinder cover bottom plate 4 is partitioned through temperature, adjacent partitions are communicated with one another, and only the flow areas of the water cooling channels 6 corresponding to different partitions are different.
It should be noted here that the first partition 10, the second partition 11, the third partition 12, and the fourth partition 13 are partitions of the cylinder head bottom plate 4 and the lower water chamber 7.
The four water cooling channels 6 are respectively communicated with the first partition 10, the second partition 11, the third partition 12 and the fourth partition 13 so as to supply cooling water with different flow rates to the first partition 10, the second partition 11, the third partition 12 and the fourth partition 13 and cool different positions of the cylinder cover bottom plate 4.
As shown in fig. 2, the first section 10 is located opposite the second section 11, and the third section 12 is located opposite the fourth section 13.
In the actual working process, the temperature of the first subarea 10 close to the exhaust passage side is higher than the temperature of the second subarea 11 close to the intake passage side, and in order to meet the cooling requirement of the first subarea 10 of the cylinder cover bottom plate 4, the flow area of the water-cooling channel 6 communicated with the first subarea 10 is larger than the flow area of the water-cooling channel 6 communicated with the second subarea 11.
The temperature of third subregion 12 and fourth subregion 13 is higher than the temperature of second subregion 11, in order to satisfy the cooling requirement to third subregion 12 and fourth subregion 13 of cylinder head bottom plate 4, and the water-cooling passageway 6 flow area who communicates with third subregion 12 and fourth subregion 13 is greater than the water-cooling passageway 6's that communicates with second subregion 11 flow area in this application.
The third subregion 12 and fourth subregion 13 symmetrical arrangement, the temperature of third subregion 12 and fourth subregion 13 is close, and the water-cooling channel 6's that communicates with third subregion 12 and fourth subregion 13 flow area is the same in this application.
In this application, the flow area of water-cooling channel 6 is less than the area of last water cavity 5 and lower water cavity 7 for the velocity of flow accelerates when cooling water gets into lower water cavity 7 through water-cooling channel 6, and the dive gets into lower water cavity 7, has accelerated the velocity of flow of cooling water at lower water cavity 7, improves the cooling efficiency of cooling water to cylinder head bottom plate 4.
Because the flow areas of different water-cooling channels 6 are different, the flow rates of cooling water passing through different water-cooling channels 6 are also different, so that different positions of the cylinder cover bottom plate 4 can be flushed by the cooling water with different flow rates, and different cooling capacities are realized.
The cylinder head cooling water jacket disclosed by the application not only realizes effective cooling of the cylinder head base plate 4, but also effectively cools the fuel injector bush 2.
Preferably, the partition plate 3 is integrally formed with the cylinder head body 1 to reduce the processing difficulty of the cylinder head body 1 and the partition plate 3.
In order to reduce the abrupt change of the water flow speed and increase the water flow resistance, the flow area of the water cooling channel 6 along the axial direction of the fuel injector liner 2 in the present application is gradually increased from the end far away from the cylinder head base plate 4 to the end close to the cylinder head base plate 4.
In order to reduce the formation of eddy current caused by the rapid change of the flow direction of water flow, the water cooling channel 6 is an inclined channel in the application, and the distance between one end, far away from the cylinder head base plate 4, of the water cooling channel 6 and the oil injector bush 2 is smaller than the distance between one end, close to the cylinder head base plate 4, of the water cooling channel 6 and the oil injector bush 2.
Through the shape that changes baffle 3 in this application, the distance between one end that baffle 3 is close to sprayer bush 2 and cylinder head bottom plate 4 is greater than the distance between one end that baffle 3 kept away from sprayer bush 2 and cylinder head bottom plate 4, in the in-process of cavity under the cooling water flows in from baffle 3, the flow area crescent of water-cooling passageway 6, the change of velocity of water flow has been reduced, the contained angle between the flow direction of cooling water and cylinder head bottom plate 4 reduces simultaneously, the change of rivers flow direction has been slowed down, reduce the formation of vortex.
The intervals between the adjacent water cooling channels 6 may be the same or different, and are specifically related by the partition division of the cylinder head base plate 4.
As shown in fig. 2, four water cooling channels 6 form a "quincunx" structure in the present application, and the intervals between the adjacent water cooling channels 6 are equal.
The shape of the water cooling channel 6 can be trapezoidal as shown in fig. 2, rectangular, or hemispherical, or other shapes, and the specific shape is determined by those skilled in the art according to actual needs.
In addition, the shapes of the water cooling passages 6 at different positions may be the same or different, that is, the flow area of the water cooling passages 6 may be changed by the size of the water cooling passages 6 or by the shape of the water cooling passages 6.
The mounting hole for mounting the fuel injector bush 2 is formed in the cylinder cover body 1, the mounting hole is integrally cast and formed in the cylinder cover body 1, the mounting hole does not need to be formed in the cylinder cover body 1 independently, and machining procedures of the cylinder cover body 1 are reduced.
An engine comprising a cylinder head cooling water jacket, the cylinder head cooling water jacket being the cylinder head cooling water jacket disclosed in any one of the above aspects.
Since the cylinder head cooling water jacket has the technical effects, the engine with the cylinder head cooling water jacket also has the same technical effects, and the details are not repeated.
The above description is only for the purpose of illustrating the preferred embodiments of the present application and the technical principles applied, and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. The scope of the present application is not limited to the specific combinations of the above-described features, and other embodiments in which the above-described features or their equivalents are combined arbitrarily without departing from the spirit of the present application are also intended to be encompassed. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.
Claims (10)
1. A cylinder head cooling water jacket, comprising:
the cylinder cover comprises a cylinder cover body (1), wherein a cooling water cavity is arranged in the cylinder cover body (1), a fuel injector bush (2) located in the cooling water cavity is arranged in the cylinder cover body (1), and a water inlet and a water outlet are formed in the cylinder cover body (1);
the partition plate (3) is arranged in the cylinder cover body (1) and is used for partitioning the cooling water cavity into an upper water cavity (5) and a lower water cavity (7), the upper water cavity (5) is communicated with the water inlet, the lower water cavity (7) is communicated with the water outlet, a plurality of water cooling channels (6) with different circulation areas are arranged between the partition plate (3) and the fuel injector bush (2), and the water cooling channels (6) are communicated with the upper water cavity (5) and the lower water cavity (7);
the cylinder head bottom plate (4) of the cylinder head body (1) is provided with a plurality of partitions, the partitions are in one-to-one correspondence with the water cooling channels (6) and are communicated with the water cooling channels (6), the flow area of the water cooling channels (6) communicated with the partitions with higher temperature is larger than the flow area of the water cooling channels (6) communicated with the partitions with lower temperature.
2. The cylinder head cooling water jacket according to claim 1, wherein the cylinder head base plate (4) has four partitions, wherein one side of the cylinder head base plate (4) close to the exhaust passage of the cylinder head body (1) is a first partition (10), one side of the cylinder head base plate (4) close to the intake passage of the cylinder head body (1) is a second partition (11), one side of the cylinder head base plate (4) close to the first intake and exhaust nose bridge area of the cylinder head body (1) is a third partition (12), one side of the cylinder head base plate (4) close to the second intake and exhaust nose bridge area of the cylinder head body (1) is a fourth partition (13), the number of the water cooling channels (6) is four, and the four water cooling channels (6) are respectively communicated with the first partition (10), the second partition (11), the third partition (12) and the fourth partition (13).
3. The cylinder head cooling jacket according to claim 2, wherein the flow area of the water cooling passage (6) communicating with the first partition (10) is larger than the flow area of the water cooling passage (6) communicating with the second partition (11).
4. A cylinder head cooling jacket according to claim 2, characterised in that the flow area of the water cooling channel (6) communicating with the third and fourth partitions (12, 13) is larger than the flow area of the water cooling channel (6) communicating with the second partition (11).
5. The cylinder head cooling jacket according to claim 2, characterized in that the water-cooling passages (6) communicating with the third and fourth partitions (12, 13) are equal in flow area.
6. The cylinder head cooling water jacket according to claim 1, characterized in that the partition plate (3) is integrally formed with the cylinder head body (1).
7. The cylinder head cooling water jacket according to claim 1, characterized in that the flow area of the water cooling passage (6) in the axial direction of the injector liner (2) gradually increases from the end away from the cylinder head base plate (4) to the end closer to the cylinder head base plate (4).
8. The cylinder head cooling water jacket according to claim 7, characterized in that the water cooling channel (6) is an inclined channel, and the distance between the end of the water cooling channel (6) away from the cylinder head base plate (4) and the injector liner (2) is smaller than the distance between the end of the water cooling channel (6) close to the cylinder head base plate (4) and the injector liner (2).
9. The cylinder head cooling water jacket according to claim 1, characterized in that the intervals between the adjacent water cooling passages (6) are the same or different; and/or the presence of a gas in the gas,
the shapes of the adjacent water cooling channels (6) are the same or different.
10. An engine comprising a cylinder head cooling jacket according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222712303.9U CN218235280U (en) | 2022-10-14 | 2022-10-14 | Cylinder head cooling water jacket and engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222712303.9U CN218235280U (en) | 2022-10-14 | 2022-10-14 | Cylinder head cooling water jacket and engine |
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| Publication Number | Publication Date |
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| CN218235280U true CN218235280U (en) | 2023-01-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202222712303.9U Active CN218235280U (en) | 2022-10-14 | 2022-10-14 | Cylinder head cooling water jacket and engine |
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| CN (1) | CN218235280U (en) |
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- 2022-10-14 CN CN202222712303.9U patent/CN218235280U/en active Active
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