CN114233508B - Engine cylinder cover water jacket - Google Patents
Engine cylinder cover water jacket Download PDFInfo
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- CN114233508B CN114233508B CN202111681675.3A CN202111681675A CN114233508B CN 114233508 B CN114233508 B CN 114233508B CN 202111681675 A CN202111681675 A CN 202111681675A CN 114233508 B CN114233508 B CN 114233508B
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- water jacket
- cooling
- exhaust passage
- cylinder cover
- cooling water
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F1/00—Cylinders; Cylinder heads
- F02F1/24—Cylinder heads
- F02F1/26—Cylinder heads having cooling means
- F02F1/36—Cylinder heads having cooling means for liquid cooling
- F02F1/40—Cylinder heads having cooling means for liquid cooling cylinder heads with means for directing, guiding, or distributing liquid stream
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- 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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
The invention discloses an engine cylinder cover water jacket, which comprises: the cylinder cover main water jacket, the cylinder cover auxiliary water jacket and the cylinder body water outlet water jacket; the cylinder cover main water jacket comprises a water inlet, a combustion chamber cooling water jacket, an exhaust passage cooling upper water jacket and a water outlet, the water inlet is positioned at the air inlet side of the engine, and the water outlet is positioned at the rear end of the exhaust side of the engine; the exhaust passage cooling upper water jacket is also provided with a first water jacket supporting part at the side far away from the combustion chamber cooling water jacket, and an exhaust passage first cooling branch is arranged on the exhaust passage cooling upper water jacket; the combustion chamber cooling water jacket comprises a fuel injector cooling water jacket, an air inlet passage cooling water jacket, a spark plug cooling water jacket, a nose bridge area cooling water jacket and a second water jacket supporting part; the cylinder cover auxiliary water jacket comprises an exhaust passage second cooling water jacket and an auxiliary water jacket supporting part, and the exhaust passage second cooling water jacket is positioned below the exhaust passage. The engine cylinder cover water jacket is provided with the plurality of cooling water jackets, so that the cooling capacity of the engine cylinder cover water jacket can be obviously improved, and the heat dissipation requirement of an engine can be met.
Description
Technical Field
The invention relates to the technical field of engines, in particular to a water jacket of an engine cylinder cover.
Background
With the stricter requirements of national regulations on energy conservation and environmental protection, the thermal efficiency of the engine is also continuously improved, and an efficient combustion system and a high compression ratio technology are also applied to the existing gasoline engine. With the increasing compression ratio, the engine has a greater and greater tendency to knock, which requires the engine cylinder head to have a greater cooling capacity to reduce the temperature in the engine cylinder to reduce the engine knock. The cooling capacity of the engine cylinder cover water jacket in the traditional technology is poor, and the heat dissipation requirement of an engine cannot be met.
Accordingly, a need exists for an engine head water jacket.
Disclosure of Invention
The invention aims to provide an engine cylinder cover water jacket, which solves the problems in the prior art, can obviously improve the cooling capacity of the engine cylinder cover water jacket, and meets the heat dissipation requirement of an engine.
The invention provides an engine cylinder cover water jacket, which comprises:
the cylinder cover main water jacket, the cylinder cover auxiliary water jacket and the cylinder body water outlet water jacket;
the cylinder cover main water jacket comprises a water inlet, a combustion chamber cooling water jacket, an exhaust passage cooling upper water jacket and a water outlet, the water inlet is positioned at the air inlet side of the engine, and the water outlet is positioned at the rear end of the exhaust side of the engine;
the exhaust passage cooling upper water jacket is also provided with a first water jacket supporting part at the side far away from the combustion chamber cooling water jacket, an exhaust passage first cooling branch is arranged on the exhaust passage cooling upper water jacket, and the exhaust passage first cooling branch is positioned above the exhaust passage and is connected with the combustion chamber cooling water jacket corresponding to each cylinder;
the combustion chamber cooling water jacket comprises an oil injector cooling water jacket arranged along the periphery of an oil injector, an air inlet passage cooling water jacket arranged between two inlet valves, a spark plug cooling water jacket arranged along the periphery of a spark plug, a nose bridge area cooling water jacket arranged between two cylinders and a second water jacket supporting part, wherein the second water jacket supporting part is positioned between two exhaust valves;
the cylinder cover auxiliary water jacket comprises an exhaust passage second cooling water jacket and an auxiliary water jacket supporting part, the exhaust passage second cooling water jacket is positioned below the exhaust passage, and the auxiliary water jacket supporting part is positioned on one side, far away from the combustion chamber, of the cylinder cover auxiliary water jacket.
The engine cylinder head water jacket as described above, wherein preferably, the number of the water inlets is plural, and the number of the water outlets is 1.
The engine cylinder head water jacket as described above, wherein preferably, a first water jacket partition plate and a second water jacket partition plate are further provided between the combustion chamber cooling water jackets corresponding to two adjacent cylinders, the first water jacket partition plate being located on an intake side of the combustion chamber cooling water jacket, and the second water jacket partition plate being located on an exhaust side of the combustion chamber cooling water jacket.
The engine head water jacket as described above, wherein it is preferable that the combustion chamber cooling water jacket further includes a third water jacket support portion provided between two cylinders, the third water jacket support portion being located on the exhaust gas side between the adjacent two cylinders.
The engine cylinder head water jacket as described above, wherein preferably, the second water jacket support portion is connected to the exhaust passage second cooling water jacket, the first water jacket support portion is connected to the auxiliary water jacket support portion, and none of the second water jacket support portion, the third water jacket support portion, and the exhaust passage second cooling water jacket is communicated with the block water jacket.
The engine cylinder cover water jacket as described above, wherein preferably, the cylinder body water outlet water jacket is provided with a cylinder body water jacket connecting portion, the cylinder body water jacket connecting portion is connected with the cylinder body water jacket, and the cylinder body water outlet water jacket is not communicated with the cylinder cover main water jacket and the cylinder cover auxiliary water jacket.
The engine cylinder head water jacket as described above, wherein preferably, the exhaust passage cooling upper water jacket is higher than the combustion chamber cooling water jacket, and the combustion chamber cooling water jacket is higher than the water inlet.
The engine head water jacket as described above, wherein preferably, the water outlet is located at the highest point of the rear end of the exhaust passage cooling upper water jacket.
The engine head water jacket as described above, wherein it is preferable that the height of the intake passage cooling water jacket and the spark plug cooling water jacket between the two intake valves is lower than the height of the nose bridge region cooling water jacket between the adjacent two cylinders.
The engine cylinder head water jacket as described above, preferably, the spark plug cooling water jacket completely wraps around the spark plug, the injector cooling water jacket is half wrapped above the injector, and the injector is hollowed below the injector.
The invention provides an engine cylinder cover water jacket, which is provided with a plurality of cooling water jackets, and the cooling capacity of the engine cylinder cover water jacket can be obviously improved through a fuel injector cooling water jacket of a combustion chamber cooling water jacket, an air inlet passage cooling water jacket, a spark plug cooling water jacket, a nose bridge area cooling water jacket and an exhaust passage second cooling water jacket of a cylinder cover auxiliary water jacket, so that the heat dissipation requirement of an engine can be met; the temperature of the oil sprayer can be effectively reduced and the reliability of the oil sprayer is improved through the oil sprayer cooling water jacket; the air inlet temperature can be effectively reduced through the air inlet cooling water jacket, so that the knocking tendency of the engine is reduced; all cooling liquid flows through the upper surface or the lower surface of the exhaust passage uniformly, so that the temperature of the wall surface of the exhaust passage can be effectively reduced, and the exhaust passage of the cylinder cover is prevented from being cracked due to high-temperature fatigue; through the first water jacket partition plate and the second water jacket partition plate, the flow direction of cooling liquid can be guided, the flow area of the cooling water jacket in the nose bridge area between the two cylinders can be reduced, the cooling liquid is forced to flow from the air inlet cooling water jacket to the spark plug cooling water jacket, and the cooling efficiency of the combustion chamber is further enhanced; the second water jacket supporting part is connected with a second cooling water jacket of the exhaust passage, so that more cooling liquid can be guided to flow through the second water jacket supporting part, the cooling of the exhaust valve and the exhaust valve seat ring is enhanced, and the abrasion of the exhaust valve seat ring is reduced; the exhaust passage cooling upper water jacket, the combustion chamber cooling water jacket, the water inlet and the water outlet are arranged at different heights, so that all gas in the cylinder cover water jacket can be exhausted, and cavitation erosion of the cylinder cover water jacket is avoided.
Drawings
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described with reference to the accompanying drawings, in which:
FIG. 1 is a schematic perspective view of an embodiment of a water jacket of an engine cylinder head according to the present invention;
FIG. 2 is a front view of a cylinder head main water jacket of an embodiment of an engine cylinder head water jacket provided in accordance with the present invention;
FIG. 3 is a schematic perspective view of a cylinder head auxiliary water jacket according to an embodiment of the water jacket of the cylinder head of the engine provided by the invention;
FIG. 4 is a bottom view of an embodiment of a water jacket of an engine cylinder head provided by the present invention;
FIG. 5 is a schematic view of a portion of the structure of FIG. 2;
fig. 6 is a schematic sectional view of the partial structure of fig. 5.
Description of reference numerals:
100-cylinder cover main water jacket; 200-cylinder cover auxiliary water jacket; 300-cylinder water outlet water jacket; 110-water inlet; 120-a combustion chamber cooling jacket; 121-injector cooling jacket; 122-inlet cooling jacket; 123-spark plug cooling water jacket; 124-cooling water jacket in nose bridge area; 125-a second water jacket support; 126-a first water jacket baffle; 127-a second water jacket spacer; 128-a third water jacket support; 130-an exhaust passage cooling upper water jacket; 131-a first water jacket support portion; 132-exhaust first cooling branch; 140-a water outlet; 210-an exhaust passage second cooling water jacket; 220-an auxiliary water jacket support; 310-cylinder water jacket connection.
Detailed Description
Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative and is in no way intended to limit the disclosure, its application, or uses. The present disclosure may be embodied in many different forms and is not limited to the embodiments described herein. These embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that: the relative arrangement of parts and steps, the composition of materials, numerical expressions and numerical values set forth in these embodiments are to be construed as merely illustrative, and not as limitative, unless specifically stated otherwise.
As used in this disclosure, "first", "second": and the like, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element preceding the word covers the element listed after the word, and does not exclude the possibility that other elements are also covered. "upper", "lower", and the like are used only to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationship may also be changed accordingly.
In the present disclosure, when a specific component is described as being located between a first component and a second component, there may or may not be intervening components between the specific component and the first component or the second component. When it is described that a specific component is connected to other components, the specific component may be directly connected to the other components without having an intervening component, or may be directly connected to the other components without having an intervening component.
All terms (including technical or scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs unless specifically defined otherwise. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate.
As shown in fig. 1 to 6, an embodiment of the present invention provides an engine head water jacket including:
the cylinder cover comprises a cylinder cover main water jacket 100, a cylinder cover auxiliary water jacket 200 and a cylinder body water outlet water jacket 300;
the cylinder head main water jacket 100 comprises a water inlet 110, a combustion chamber cooling water jacket 120, an exhaust passage cooling upper water jacket 130 and a water outlet 140, wherein the water inlet 110 is positioned at the air inlet side of the engine, and the water outlet 140 is positioned at the rear end (flywheel end) of the exhaust side of the engine;
the exhaust passage cooling upper water jacket 130 is further provided with a first water jacket supporting part 131 at the side far away from the combustion chamber cooling water jacket 120, an exhaust passage first cooling branch 132 is arranged on the exhaust passage cooling upper water jacket 130, and the exhaust passage first cooling branch 132 is positioned above an exhaust passage and is connected with the combustion chamber cooling water jacket 120 corresponding to each cylinder;
the combustion chamber cooling water jacket 120 includes an injector cooling water jacket 121 disposed along the periphery of the injector, an intake passage cooling water jacket 122 disposed between the two intake valves, an ignition plug cooling water jacket 123 disposed along the periphery of the ignition plug, a nose bridge region cooling water jacket 124 disposed between the two cylinders, and a second water jacket support portion 125, the second water jacket support portion 125 being located between the two exhaust valves;
the cylinder cover auxiliary water jacket 200 comprises an exhaust passage second cooling water jacket 210 and an auxiliary water jacket supporting part 220, the exhaust passage second cooling water jacket 210 is positioned below an exhaust passage, and the auxiliary water jacket supporting part 220 is positioned on one side, far away from a combustion chamber, of the cylinder cover auxiliary water jacket 200.
The number of the water inlets 110 is more than one, so that the flow of the cooling liquid can be obviously improved, the cooling capacity of the engine cylinder cover water jacket on the exhaust passage is further improved, and the number of the water outlets 140 is 1.
In operation, engine coolant enters the cylinder head water jacket from the water inlet 110 of the cylinder head main water jacket 100, a part of the coolant flows through the intake passage cooling water jacket 122 and the spark plug cooling water jacket 123 from the injector cooling water jacket 121, and is divided into two paths, one path of the coolant flows into the cylinder head auxiliary water jacket 200 through the second water jacket supporting part 125 of the cylinder head main water jacket 100, and the other path of the coolant flows into the exhaust passage cooling upper water jacket 130 through the exhaust passage first cooling branch 132. Another portion of the coolant entering the head jacket is collected by the cooling jacket 124 and the plug cooling jacket 123 in the nose bridge region between the cylinders, and then flows into the exhaust passage cooling upper jacket 130. The coolant flowing into the cylinder head auxiliary water jacket 200 flows into the exhaust passage cooling upper water jacket 130 of the cylinder head main water jacket 100 through the auxiliary water jacket supporting portion 220 and the first water jacket supporting portion 131 of the cylinder head main water jacket 100, and all the coolant is collected in the exhaust passage cooling upper water jacket 130 of the cylinder head and then flows out from the water outlet 140.
The temperature of the oil sprayer can be effectively reduced and the reliability of the oil sprayer is improved through the oil sprayer cooling water jacket 121; through the air inlet cooling water jacket 122, the air inlet temperature can be effectively reduced, so that the knocking tendency of the engine is reduced; a plurality of cooling water jackets are arranged, and the cooling capacity of the engine cylinder cover water jacket can be obviously improved through the injector cooling water jacket 121 of the combustion chamber cooling water jacket 120, the intake passage cooling water jacket 122, the spark plug cooling water jacket 123, the nose bridge area cooling water jacket 124 and the exhaust passage second cooling water jacket 210 of the cylinder cover auxiliary water jacket 200, so that the heat dissipation requirement of the engine can be met; and all cooling liquid flows through the upper surface or the lower surface of the exhaust passage, so that the temperature of the wall surface of the exhaust passage can be effectively reduced, and the exhaust passage of the cylinder cover is prevented from being cracked due to high-temperature fatigue.
Further, a first water jacket partition plate 126 and a second water jacket partition plate 127 are further provided between the combustion chamber cooling water jackets 120 corresponding to the adjacent two cylinders, the first water jacket partition plate 126 being located on the intake side of the combustion chamber cooling water jackets 120, and the second water jacket partition plate 127 being located on the exhaust side of the combustion chamber cooling water jackets 120. Illustratively, the first and second water jacket partitions 126, 127 are formed using a cast molding process. Through the first water jacket partition 126 and the second water jacket partition 127, the flow direction of the cooling liquid can be guided, the flow area of the cooling water jacket 124 in the nose bridge area between the two cylinders can be reduced, and the cooling liquid is forced to flow from the air inlet passage cooling water jacket 122 to the spark plug cooling water jacket 123, so that the cooling efficiency of the combustion chamber is further enhanced.
Further, the combustion chamber cooling water jacket 120 further includes a third water jacket support portion 128 provided between two cylinders, the third water jacket support portion 128 being located on the exhaust gas side between the adjacent two cylinders.
Further, as shown in fig. 4, the second water jacket supporting portion 125 of the cylinder head main water jacket 100 is connected with the exhaust passage second cooling water jacket 210 of the cylinder head auxiliary water jacket 200, so that more coolant can be guided to flow through the second water jacket supporting portion 125 of the cylinder head main water jacket 100, cooling of the exhaust valves and the exhaust valve races is enhanced, and abrasion of the exhaust valve races is reduced.
As shown in fig. 1, the first water jacket supporting portion 131 of the cylinder head main water jacket 100 is connected with the auxiliary water jacket supporting portion 220 of the cylinder head auxiliary water jacket 200, and as shown in fig. 4, the second water jacket supporting portion 125 of the cylinder head main water jacket 100, the third water jacket supporting portion 128 and the exhaust port second cooling water jacket 210 of the cylinder head auxiliary water jacket 200 are not communicated with the block water jacket.
Further, the cylinder body water outlet water jacket 300 is provided with a cylinder body water jacket connecting portion 310, the cylinder body water jacket connecting portion 310 is connected with the cylinder body water jacket, and the cylinder body water outlet water jacket 300 is not communicated with the cylinder cover main water jacket 100 and the cylinder cover auxiliary water jacket 200.
Further, the height of the exhaust passage cooling upper water jacket 130 is greater than the height of the combustion chamber cooling water jacket 120, and the height of the combustion chamber cooling water jacket 120 is greater than the height of the water inlet 110. And the water outlet 140 is located at the highest point of the rear end of the exhaust passage cooling upper water jacket 130, so that all gas in the cylinder cover water jacket can be discharged, and cavitation of the cylinder cover water jacket is avoided.
Further, the height of the intake passage cooling water jacket 122 and the plug cooling water jacket 123 between the two intake valves is lower than the height of the nose bridge region cooling water jacket 124 between the adjacent two cylinders. Therefore, the cooling liquid can be forced to flow through the upper surface of the combustion chamber, the flow speed of the cooling liquid on the upper surface of the combustion chamber can be improved, and the cooling efficiency of the combustion chamber is further enhanced.
Furthermore, the spark plug cooling water jacket 123 completely wraps the periphery of the spark plug, the injector cooling water jacket 121 is half wrapped above the injector, and the lower portion of the injector is hollowed.
According to the engine cylinder cover water jacket provided by the embodiment of the invention, the plurality of cooling water jackets are arranged, and the cooling capacity of the engine cylinder cover water jacket can be obviously improved through the oil sprayer cooling water jacket of the combustion chamber cooling water jacket, the air inlet passage cooling water jacket, the spark plug cooling water jacket, the nose bridge area cooling water jacket and the exhaust passage second cooling water jacket of the cylinder cover auxiliary water jacket, so that the heat dissipation requirement of an engine is met; the temperature of the oil sprayer can be effectively reduced and the reliability of the oil sprayer is improved through the oil sprayer cooling water jacket; the air inlet temperature can be effectively reduced through the air inlet cooling water jacket, so that the knocking tendency of the engine is reduced; all cooling liquid flows through the upper surface or the lower surface of the exhaust passage uniformly, so that the temperature of the wall surface of the exhaust passage can be effectively reduced, and the exhaust passage of the cylinder cover is prevented from being cracked due to high-temperature fatigue; through the first water jacket partition plate and the second water jacket partition plate, the flow direction of cooling liquid can be guided, the flow area of the cooling water jacket in the nose bridge area between the two cylinders can be reduced, the cooling liquid is forced to flow from the air inlet cooling water jacket to the spark plug cooling water jacket, and the cooling efficiency of the combustion chamber is further enhanced; the second water jacket supporting part is connected with a second cooling water jacket of the exhaust passage, so that more cooling liquid can be guided to flow through the second water jacket supporting part, the cooling of the exhaust valve and the exhaust valve seat ring is enhanced, and the abrasion of the exhaust valve seat ring is reduced; the exhaust passage cooling upper water jacket, the combustion chamber cooling water jacket, the water inlet and the water outlet are arranged at different heights, so that all gas in the cylinder cover water jacket can be exhausted, and cavitation erosion of the cylinder cover water jacket is avoided.
Thus far, various embodiments of the present disclosure have been described in detail. Some details well known in the art have not been described in order to avoid obscuring the concepts of the present disclosure. It will be fully apparent to those skilled in the art from the foregoing description how to practice the presently disclosed embodiments.
Although some specific embodiments of the present disclosure have been described in detail by way of example, it should be understood by those skilled in the art that the foregoing examples are for purposes of illustration only and are not intended to limit the scope of the present disclosure. It will be understood by those skilled in the art that various changes may be made in the above embodiments or equivalents may be substituted for elements thereof without departing from the scope and spirit of the present disclosure. The scope of the present disclosure is defined by the appended claims.
Claims (10)
1. An engine cylinder head water jacket, comprising:
the cylinder cover main water jacket, the cylinder cover auxiliary water jacket and the cylinder body water outlet water jacket;
the cylinder cover main water jacket comprises a water inlet, a combustion chamber cooling water jacket, an exhaust passage cooling upper water jacket and a water outlet, the water inlet is positioned at the air inlet side of the engine, and the water outlet is positioned at the rear end of the exhaust side of the engine;
the exhaust passage cooling upper water jacket is also provided with a first water jacket supporting part at the side far away from the combustion chamber cooling water jacket, an exhaust passage first cooling branch is arranged on the exhaust passage cooling upper water jacket, and the exhaust passage first cooling branch is positioned above the exhaust passage and is connected with the combustion chamber cooling water jacket corresponding to each cylinder;
the combustion chamber cooling water jacket comprises an oil injector cooling water jacket arranged along the periphery of an oil injector, an air inlet passage cooling water jacket arranged between two inlet valves, a spark plug cooling water jacket arranged along the periphery of a spark plug, a nose bridge area cooling water jacket arranged between two cylinders and a second water jacket supporting part, wherein the second water jacket supporting part is positioned between two exhaust valves;
the cylinder cover auxiliary water jacket comprises an exhaust passage second cooling water jacket and an auxiliary water jacket supporting part, the exhaust passage second cooling water jacket is positioned below the exhaust passage, the auxiliary water jacket supporting part is positioned on one side of the cylinder cover auxiliary water jacket far away from the combustion chamber,
the second water jacket supporting part is connected with the exhaust passage second cooling water jacket, the first water jacket supporting part is connected with the auxiliary water jacket supporting part, engine cooling liquid enters the cylinder cover water jacket from the water inlet of the cylinder cover main water jacket, a part of cooling liquid flows through the air inlet passage cooling water jacket and the spark plug cooling water jacket from the oil injector cooling water jacket and is divided into two paths, one path of cooling liquid flows into the cylinder cover auxiliary water jacket through the second water jacket supporting part of the cylinder cover main water jacket, and the other path of cooling liquid flows into the exhaust passage cooling upper water jacket through the exhaust passage first cooling branch; the other part of the cooling liquid entering the cylinder cover water jacket is converged by the cooling water jacket of the nose bridge area between the two cylinders and the cooling water jacket of the spark plug, and then flows into the exhaust passage cooling upper water jacket; the cooling liquid flowing into the auxiliary water jacket of the cylinder cover flows into the exhaust passage cooling upper water jacket of the main water jacket of the cylinder cover through the auxiliary water jacket supporting part and the first water jacket supporting part of the main water jacket of the cylinder cover, and all the cooling liquid flows out from the water outlet after being gathered in the exhaust passage cooling upper water jacket of the cylinder cover.
2. The engine head water jacket according to claim 1, wherein the number of the water inlets is plural, and the number of the water outlets is 1.
3. The engine cylinder head water jacket according to claim 1, wherein a first water jacket partition plate and a second water jacket partition plate are further provided between the combustion chamber cooling water jackets corresponding to two adjacent cylinders, the first water jacket partition plate being located on an intake side of the combustion chamber cooling water jacket, and the second water jacket partition plate being located on an exhaust side of the combustion chamber cooling water jacket.
4. The engine head water jacket according to claim 1, wherein the combustion chamber cooling water jacket further includes a third water jacket support portion provided between two cylinders, the third water jacket support portion being located on an exhaust gas side between adjacent two cylinders.
5. The engine head water jacket according to claim 4, wherein none of the second water jacket support portion, the third water jacket support portion, and the exhaust passage second cooling water jacket are in communication with a block water jacket.
6. The engine cylinder head water jacket according to claim 1, wherein the cylinder body water outlet water jacket is provided with a cylinder body water jacket connecting portion, the cylinder body water jacket connecting portion is connected with the cylinder body water jacket, and the cylinder body water outlet water jacket is not communicated with the cylinder head main water jacket and the cylinder head auxiliary water jacket.
7. The engine head water jacket according to claim 1, wherein a height of the exhaust passage cooling upper water jacket is greater than a height of the combustion chamber cooling water jacket, which is greater than a height of the water inlet.
8. The engine head water jacket according to claim 7, wherein the water outlet is located at a rear end highest point of the exhaust passage cooling upper water jacket.
9. The engine head water jacket according to claim 1, wherein the height of the intake passage cooling water jacket and the spark plug cooling water jacket between two intake valves is lower than the height of the nose bridge region cooling water jacket between two adjacent cylinders.
10. The engine cylinder cover water jacket according to claim 1, wherein the spark plug cooling water jacket completely wraps around the spark plug, the fuel injector cooling water jacket is half wrapped above the fuel injector, and the lower portion of the fuel injector is hollow.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111681675.3A CN114233508B (en) | 2021-12-29 | 2021-12-29 | Engine cylinder cover water jacket |
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| CN202111681675.3A CN114233508B (en) | 2021-12-29 | 2021-12-29 | Engine cylinder cover water jacket |
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| CN114233508A CN114233508A (en) | 2022-03-25 |
| CN114233508B true CN114233508B (en) | 2023-02-24 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN208153178U (en) * | 2018-03-12 | 2018-11-27 | 潍柴动力股份有限公司 | A kind of cylinder cap and engine of novel cooling manner |
| CN210948922U (en) * | 2019-10-23 | 2020-07-07 | 中国第一汽车股份有限公司 | Double-outlet exhaust passage cylinder cover water jacket, cylinder and engine |
| CN214007341U (en) * | 2020-09-24 | 2021-08-20 | 潍柴动力股份有限公司 | Engine water jacket structure and engine |
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| JP2014084737A (en) * | 2012-10-19 | 2014-05-12 | Honda Motor Co Ltd | Water jacket structure of cylinder head |
| JP2014095342A (en) * | 2012-11-09 | 2014-05-22 | Honda Motor Co Ltd | Water jacket structure of internal combustion engine |
| CN103511117A (en) * | 2013-09-18 | 2014-01-15 | 潍柴动力股份有限公司 | Diesel engine and cylinder head thereof |
| CN108131212A (en) * | 2017-12-29 | 2018-06-08 | 浙江吉利罗佑发动机有限公司 | Engine cool nested structure |
| CN108547703A (en) * | 2018-03-23 | 2018-09-18 | 重庆长安汽车股份有限公司 | A kind of car engine cooling water jacket structure of integrated exhaust manifold |
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| CN114233508A (en) | 2022-03-25 |
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