CN117211984A - Water jacket of engine cylinder cover - Google Patents
Water jacket of engine cylinder cover Download PDFInfo
- Publication number
- CN117211984A CN117211984A CN202311347690.3A CN202311347690A CN117211984A CN 117211984 A CN117211984 A CN 117211984A CN 202311347690 A CN202311347690 A CN 202311347690A CN 117211984 A CN117211984 A CN 117211984A
- Authority
- CN
- China
- Prior art keywords
- water
- cooling water
- channel
- water channel
- jacket
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 156
- 239000000498 cooling water Substances 0.000 claims abstract description 115
- 239000007789 gas Substances 0.000 description 19
- 238000001816 cooling Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Landscapes
- Exhaust Silencers (AREA)
Abstract
The application discloses an engine cylinder head water jacket, which comprises a water jacket body, wherein the shape of the water jacket body is matched with the shape of an engine cylinder; the water jacket body comprises an upper water jacket layer and a lower water jacket layer; a water inlet is formed in the lower water jacket; the water inlet is respectively connected with the exhaust valve, the spark plug cooling water channel and the exhaust gas pipe cooling water channel; the water inlet, the exhaust valve and the spark plug cooling water channels are provided with a plurality of groups, and the number of the water inlet, the exhaust valve and the spark plug cooling water channels corresponds to the number of engine cylinders; the exhaust valve, the spark plug cooling water channel and the exhaust gas pipe cooling water channel are respectively connected with a water outlet, and the water outlet is positioned on the lower water jacket. The exhaust valve and spark plug cooling water channel can cool the exhaust valve and the spark plug, can effectively cool the triangular area of the high-load cylinder cover, controls knocking, can cool the periphery of the exhaust manifold, and avoids hidden troubles such as thermal fatigue and crack of the cylinder cover.
Description
Technical Field
The application relates to the technical field of engines, in particular to an engine cylinder head water jacket.
Background
The cylinder cover of the engine has the functions of sealing the cylinder, forming a combustion space together with the piston and bearing high-temperature and high-pressure fuel gas. The cylinder head is subjected to mechanical loads caused by gas forces and fastening of the cylinder bolts, and also to high thermal loads due to contact with high temperature gas. With the continuous tightening of the national fuel consumption regulations, the performance and the strengthening degree of the engine are necessarily required to be improved, wherein the cooling of the engine has become an extremely important part. In order to reduce the temperature of the engine cylinder cover, the engine cylinder cover is cooled by adopting a mode of arranging a water jacket. However, the current engine cylinder head water jacket mechanism is simple, the cooling effect of water flow cannot be fully utilized, and main water flow is not introduced into a triangle area with the highest heat load, so that exhaust and a spark plug are fully cooled. For a cylinder head integrated with an exhaust manifold, the exhaust manifold is not quantitatively cooled by well organized water flow. If the temperature of the triangular area of the high-load cylinder cover is too high, knocking phenomenon can occur, and if the temperature of the integrated exhaust manifold is too high, hidden dangers such as thermal fatigue, cracks and the like of the cylinder cover can occur.
Disclosure of Invention
In order to solve the problems, the application provides the water jacket of the engine cylinder cover, which can effectively cool the triangular area of the high-load cylinder cover, control knocking, wrap the periphery of the exhaust manifold in water flow and avoid hidden troubles such as thermal fatigue and crack of the cylinder cover.
In order to achieve the above purpose, the technical scheme adopted by the application is as follows: an engine cylinder head water jacket comprises a water jacket body, wherein the shape of the water jacket body is matched with that of an engine cylinder; the water jacket body comprises an upper water jacket layer and a lower water jacket layer; a water inlet is formed in the lower water jacket; the water inlet is respectively connected with the exhaust valve, the spark plug cooling water channel and the exhaust gas pipe cooling water channel; the water inlet, the exhaust valve and the spark plug cooling water channels are provided with a plurality of groups, and the number of the water inlet, the exhaust valve and the spark plug cooling water channels corresponds to the number of engine cylinders; the exhaust valve, the spark plug cooling water channel and the exhaust gas pipe cooling water channel are respectively connected with a water outlet, and the water outlet is positioned on the lower water jacket.
As a preferred technical scheme of the application: the water inlet comprises a first water inlet hole, a second water inlet hole and a third water inlet hole, and the second water inlet hole is connected with the exhaust valve and the spark plug cooling water channel; the first water inlet hole and the third water inlet hole are connected with the cooling water channel of the exhaust air pipe.
As a preferred technical scheme of the application: the cross-sectional area of the second water inlet hole is larger than that of the first water inlet hole and the third water inlet hole.
As a preferred technical scheme of the application: the exhaust valve and spark plug cooling water channel comprises a first water channel, a second water channel and a third water channel, and the first water channel is connected with the inlet water Kong Erxiang; the first water channel is connected with the second water channel and the third water channel respectively, and the second water channel and the third water channel are connected with the water outlet.
As a preferred technical scheme of the application: the exhaust gas pipe cooling water channels comprise a plurality of groups of lower-layer cooling water channels and upper-layer cooling water channels, the lower-layer cooling water channels are positioned on the lower-layer water jacket, the lower-layer cooling water channels are connected with the water inlet, and the number of the lower-layer cooling water channels is matched with that of engine cylinders; the upper layer cooling water channel is positioned on the upper layer cooling water jacket; the lower layer cooling water channel is connected with the upper layer cooling water channel through a connecting hole; the upper layer cooling water channel is connected with a water return pipe positioned in the lower layer water jacket through a plurality of water return holes; the water return pipe is connected with the water outlet.
As a preferred technical scheme of the application: the connecting holes are two groups, and the plurality of groups of lower-layer cooling water channels are equally divided and then are collected into the two groups of connecting holes.
As a preferred technical scheme of the application: the lower layer cooling water channel comprises a water channel four and a water channel five; the water channel IV and the water channel V are respectively connected with the water inlet hole I and the water inlet hole three-phase.
As a preferred technical scheme of the application: the upper layer cooling water channels comprise a plurality of groups of cooling water channels, the cooling water channels are mutually communicated, and the upper layer water jackets are alternately arranged.
The application has the following beneficial effects:
1. the exhaust valve and the spark plug cooling water channel can cool the exhaust valve and the spark plug, can effectively cool the triangular area of the high-load cylinder cover, controls knocking,
2. the exhaust manifold is wrapped by the air pipe cooling water channel, so that the periphery of the exhaust manifold can be cooled, and hidden dangers such as thermal fatigue and cracks of the cylinder cover are avoided.
Drawings
FIG. 1 is a front view of the internal structure of the present application;
FIG. 2 is a top view of the internal structure of the present application;
FIG. 3 is a rear elevational view of the internal structure of the present application;
fig. 4 is a schematic overall structure of the present application.
In fig. 1 to 4, 1, a water jacket body; 2. an upper water jacket; 3. a lower water jacket; 4. a water inlet; 5. an exhaust valve and a spark plug cooling water channel; 6. an exhaust gas pipe cooling water channel; 7. a water outlet; 8. a water inlet hole I; 9. a water inlet hole II; 10. a water inlet hole III; 11. a first water channel; 12. a second water channel; 13. a water channel III; 14. a lower layer cooling water channel; 15. an upper layer cooling water channel; 16. a connection hole; 17. a water return hole, 18, a water return pipe; 19. a cooling water channel; 20. a water channel IV; 21. a fifth water channel; 22. a water outlet hole; 23. and an exhaust passage total opening.
Detailed Description
The present application will be described in further detail with reference to examples in order to make the objects and advantages of the present application more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application.
In the description of the present application, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art.
As shown in fig. 1 to 4, the embodiment of the application provides an engine cylinder head water jacket, which comprises a water jacket body 1, wherein the shape of the water jacket body 1 is matched with that of an engine cylinder; the water jacket body 1 comprises an upper water jacket 2 and a lower water jacket 3; a water inlet 4 is arranged on the lower water jacket 3; the water inlet 4 is respectively connected with an exhaust valve, a spark plug cooling water channel 5 and an exhaust gas pipe cooling water channel 6; the exhaust valve and the spark plug cooling water channels 5 are provided with a plurality of groups, and the number of the groups corresponds to the number of the engine cylinders; the exhaust valve, the spark plug cooling water channel 5 and the exhaust gas pipe cooling water channel 6 are respectively connected with a water outlet 7, and the water outlet 7 is positioned on the lower water jacket 3. The exhaust valve and spark plug cooling water channel 5 can effectively cool the triangular area of the high-load cylinder cover, control knocking, and the periphery of the exhaust manifold can be wrapped in water flow by the exhaust pipe cooling water channel 6, so that hidden troubles such as thermal fatigue and cracks of the cylinder cover are avoided.
The water inlet 4 comprises a first water inlet hole 8, a second water inlet hole 9 and a third water inlet hole 10, and the second water inlet hole 9 is connected with the exhaust valve and the spark plug cooling water channel 5; the first water inlet hole 8 and the third water inlet hole 10 are connected with the cooling water channel 6 of the exhaust gas pipe. The cross section area of the water inlet hole II 9 is larger than that of the water inlet holes I8 and III 10, so that the cooling water in the exhaust valve and the spark plug cooling water channel 5 can be ensured to be enough. The exhaust valve and spark plug cooling water channel 5 comprises a first water channel 11, a second water channel 12 and a third water channel 13, wherein the first water channel 11 is connected with the second water inlet hole 9; when the embodiment is applied to an engine cylinder, the position of the first water channel 11 is between two exhaust passages of each cylinder, the second water channel 12 and the third water channel 13 are positioned between the exhaust passages and a spark plug hole, cooling water enters the first water channel 11 through the second water inlet hole 9 and flows out of the right water outlet 7 after passing through the second water channel 12 and the third water channel 13, and triangular areas of a high-load cylinder cover can be effectively cooled to control knocking.
The exhaust gas pipe cooling water channel 6 comprises a lower layer cooling water channel 14 and an upper layer cooling water channel 15, the lower layer cooling water channel 14 is positioned on the lower layer water jacket 3, and the lower layer cooling water channel 14 is connected with the water outlet 7; the lower layer cooling water channels 14 are provided with a plurality of groups, and the number of the groups of the cooling water channels is matched with the number of the engine cylinders; the upper layer cooling water channel 15 is positioned on the upper layer cooling water jacket; the plurality of groups of lower-layer cooling water channels 14 are connected with the upper-layer cooling water channels 15 through connecting holes 16; the upper layer cooling water channel 15 is connected with a water return pipe 18 positioned on the lower layer water jacket 3 through a plurality of water return holes 17; when the embodiment is applied to an engine cylinder, the position of the lower layer cooling water channel 14 is positioned below an exhaust manifold of the cylinder, and the upper layer cooling water channel 15 is positioned above the exhaust manifold, so that the exhaust manifold can be wrapped, cooling water flows around the exhaust gas pipe, and hidden dangers such as thermal fatigue and cracks of the cylinder cover are avoided.
The lower layer cooling water channel 14 comprises a water channel four 20 and a water channel five 21; the fourth water channel 20 and the fifth water channel 21 are respectively connected with the first water inlet hole 8 and the third water inlet hole 10. The upper layer cooling water channel 15 comprises a plurality of groups of cooling water channels 19, the groups of cooling water channels 19 are mutually communicated, and the cooling water channels are alternately arranged on the upper layer water jacket 2. When the embodiment is applied to an engine, the four water channels 20 and the five water channels 21 are positioned below the exhaust manifold, the plurality of groups of cooling water channels 19 are positioned above the exhaust manifold, the connecting holes 16 are positioned near the exhaust passage main opening 23, and in order to improve the exchange rate of cooling water, the two groups of connecting holes 16 are arranged, and the lower layer cooling water channels 14 of the plurality of groups of exhaust gas pipe cooling water channels 6 are collected into the two groups of connecting holes 16 after being evenly divided. Taking a four-cylinder engine as an example, the lower-layer cooling water channels 14 of the four groups of exhaust gas pipe cooling water channels 6 are bounded by an exhaust gas pipe main port 23, two groups of connecting holes 16 are respectively arranged at the left side and the right side of the exhaust gas pipe main port 23, the lower-layer cooling water channels 14 of the two groups of exhaust gas pipe cooling water channels 6 positioned at the left side of the exhaust gas pipe main port 23 are converged and then are connected with the upper-layer cooling water channels 15 through the connecting holes 16 at the left side, and the lower-layer cooling water channels 14 of the two groups of exhaust gas pipe cooling water channels 6 positioned at the right side of the exhaust gas pipe main port 23 are converged and then are connected with the upper-layer cooling water channels 15 through the connecting holes 16 at the left side. In order to ensure the communication between the plurality of groups of lower cooling water channels 14 and the upper cooling water channels 15, the plurality of groups of lower cooling water channels 14 are respectively connected with the two connecting holes 16 after being gathered together. When the water jacket is used, cooling water flows into the water channel four 20 and the water channel five 21 through the water inlet holes 8 and the water inlet holes 10, flows into the upper-layer cooling water channel 15 through the connecting holes 16 after being gathered in the water channel four 20 and the water channel five 21, flows into the water return pipe 18 through the plurality of water return holes 17, and finally flows out of the lower-layer water jacket 3 through the water outlet 7 connected with the water return pipe 18. The water outlet 7 is formed by a plurality of water outlet holes 22, preferably five groups in this embodiment. The cooling water channels 19 are preferably eight groups, and the water return holes 17 are preferably six groups.
The foregoing is merely a preferred embodiment of the present application and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present application, which are intended to be comprehended within the scope of the present application.
Claims (8)
1. An engine cylinder head water jacket, characterized in that: the engine cylinder comprises a water jacket body, wherein the shape of the water jacket body is matched with that of an engine cylinder; the water jacket body comprises an upper water jacket layer and a lower water jacket layer; a water inlet is formed in the lower water jacket; the water inlet is respectively connected with the exhaust valve, the spark plug cooling water channel and the exhaust gas pipe cooling water channel; the water inlet, the exhaust valve and the spark plug cooling water channels are provided with a plurality of groups, and the number of the water inlet, the exhaust valve and the spark plug cooling water channels corresponds to the number of engine cylinders; the exhaust valve, the spark plug cooling water channel and the exhaust gas pipe cooling water channel are respectively connected with a water outlet, and the water outlet is positioned on the lower water jacket.
2. The engine cylinder head water jacket as set forth in claim 1, wherein: the water inlet comprises a first water inlet hole, a second water inlet hole and a third water inlet hole, and the second water inlet hole is connected with the exhaust valve and the spark plug cooling water channel; the first water inlet hole and the third water inlet hole are connected with the cooling water channel of the exhaust air pipe.
3. The engine cylinder head water jacket as set forth in claim 2, wherein: the cross-sectional area of the second water inlet hole is larger than that of the first water inlet hole and the third water inlet hole.
4. The engine cylinder head water jacket as set forth in claim 2, wherein: the exhaust valve and spark plug cooling water channel comprises a first water channel, a second water channel and a third water channel, and the first water channel is connected with the inlet water Kong Erxiang; the first water channel is connected with the second water channel and the third water channel respectively, and the second water channel and the third water channel are connected with the water outlet.
5. The engine cylinder head water jacket as set forth in claim 2, wherein: the exhaust gas pipe cooling water channels comprise a plurality of groups of lower-layer cooling water channels and upper-layer cooling water channels, the lower-layer cooling water channels are positioned on the lower-layer water jacket, the lower-layer cooling water channels are connected with the water inlet, and the number of the lower-layer cooling water channels is matched with that of engine cylinders; the upper layer cooling water channel is positioned on the upper layer cooling water jacket; the lower layer cooling water channel is connected with the upper layer cooling water channel through a connecting hole; the upper layer cooling water channel is connected with a water return pipe positioned in the lower layer water jacket through a plurality of water return holes; the water return pipe is connected with the water outlet.
6. The engine cylinder head water jacket as set forth in claim 5, wherein: the connecting holes are two groups, and the plurality of groups of lower-layer cooling water channels are equally divided and then are collected into the two groups of connecting holes.
7. The engine cylinder head water jacket as set forth in claim 5, wherein: the lower layer cooling water channel comprises a water channel four and a water channel five; the water channel IV and the water channel V are respectively connected with the water inlet hole I and the water inlet hole three-phase.
8. The engine cylinder head water jacket as set forth in claim 5, wherein: the upper layer cooling water channels comprise a plurality of groups of cooling water channels, the cooling water channels are mutually communicated, and the upper layer water jackets are alternately arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311347690.3A CN117211984A (en) | 2023-10-18 | 2023-10-18 | Water jacket of engine cylinder cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311347690.3A CN117211984A (en) | 2023-10-18 | 2023-10-18 | Water jacket of engine cylinder cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117211984A true CN117211984A (en) | 2023-12-12 |
Family
ID=89046279
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311347690.3A Pending CN117211984A (en) | 2023-10-18 | 2023-10-18 | Water jacket of engine cylinder cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117211984A (en) |
-
2023
- 2023-10-18 CN CN202311347690.3A patent/CN117211984A/en active Pending
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