CN114576030B - Cylinder cover cooling water jacket and engine - Google Patents
Cylinder cover cooling water jacket and engine Download PDFInfo
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- CN114576030B CN114576030B CN202210248342.XA CN202210248342A CN114576030B CN 114576030 B CN114576030 B CN 114576030B CN 202210248342 A CN202210248342 A CN 202210248342A CN 114576030 B CN114576030 B CN 114576030B
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- water jacket
- cooling
- cylinder
- lower water
- jackets
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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
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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 belongs to the technical field of engine cooling, and discloses a cylinder head cooling water jacket and an engine. The cylinder cover cooling water jacket comprises a plurality of upper water jackets and a plurality of lower water jackets, wherein the number of the upper water jackets corresponds to the number of the cylinders; one end of the upper water jacket is communicated with a container for containing cooling liquid, and the other end of the upper water jacket is provided with a water outlet channel; the cooling liquid can enter the lower water channel from the upper water jacket and cool the nose bridge area of the air cylinder; the cylinder head is provided with a plurality of cylinder heads, a plurality of lower water jackets are arranged above the cylinder heads, one ends of the plurality of lower water jackets are correspondingly communicated with the plurality of lower water channels one by one, and the other ends of the plurality of lower water jackets are provided with water outlet channels communicated with the cooling channels of the cylinder body. The cooling water jacket of the cylinder cover can improve the cooling effect of the cylinder cover, prolong the service life of the cylinder cover, has simple structure and easy manufacture, and reduces the production and manufacturing cost.
Description
Technical Field
The invention relates to the technical field of engine cooling, in particular to a cylinder head cooling water jacket and an engine.
Background
During engine operation, the engine needs to be cooled by the fuel and the combustion of the fuel generates a large amount of heat. The most common cooling method is to provide a cooling water jacket on the cylinder head to reduce the temperature of the cylinder head and to remove heat generated during combustion. In order to cool the cylinder head well during operation, and avoid overheating of the cylinder head, thereby affecting the economy and power performance of the engine, a water flow channel needs to be integrally cast in the cylinder head for circulation and cooling of cooling liquid. When cooling the cylinder by using a coolant, the cylinder block is cooled by the coolant, and then water is supplied from the cylinder block to the cylinder head through the cylinder gasket water hole. Because the water is sequentially fed to the cylinder cover from the front end to the rear end of the cylinder body, the water flow has larger water feeding uniformity difference of each cylinder, and meanwhile, the cooling liquid has larger pressure drop along the way, so that each cylinder cannot be cooled unevenly, the cooling efficiency is low, and a series of problems such as the rise of the heat load of the cylinder cover, even cracking faults occur.
Disclosure of Invention
The invention aims to provide the cooling water jacket of the cylinder cover, which can improve the cooling effect of the cylinder cover, prolong the service life of the cylinder cover, has a simple structure, is easy to manufacture and reduces the production and manufacturing cost.
To achieve the purpose, the invention adopts the following technical scheme:
the cylinder cover cooling water jacket comprises a plurality of upper water jackets and a plurality of lower water jackets, wherein the number of the upper water jackets corresponds to the number of the cylinders; one end of the upper water jacket is communicated with a container for containing cooling liquid, and the other end of the upper water jacket is provided with a water outlet channel; the cooling liquid can enter the lower water channel from the upper water jacket and cool the nose bridge area of the air cylinder; the cylinder head is provided with a plurality of cylinder heads, a plurality of lower water jackets are arranged above the cylinder heads, one ends of the plurality of lower water jackets are correspondingly communicated with the plurality of lower water channels one by one, and the other ends of the plurality of lower water jackets are provided with water outlet channels communicated with the cooling channels of the cylinder body.
Optionally, the cylinder head cooling water jacket further comprises a liquid inlet main channel configured to communicate with a container containing a cooling liquid; the liquid inlet main channel is provided with a plurality of liquid inlet branch channels which are communicated with the plurality of upper water jackets in a one-to-one correspondence manner.
Optionally, a liquid inlet channel is arranged on the upper water jacket, and the liquid inlet channel is matched and spliced with the liquid inlet branch channel.
Optionally, two adjacent upper water jackets are in communication with each other.
Optionally, the liquid inlet channels of two adjacent upper water jackets are communicated with each other.
Optionally, a lower water cooling part communicated with the lower water passage is arranged on the lower water jacket, and the lower water cooling part is arranged around the spark plug and the fuel injector of the cylinder.
Optionally, the upper water jacket and the lower water jacket are integrally formed and communicated.
Alternatively, the upper water jacket and the lower water jacket are integrally cast.
Optionally, the water outlet channels are provided in plurality, and the water outlet channels are distributed at intervals along the circumferential direction of the cylinder.
The beneficial effects are that:
the cooling water jacket of the cylinder cover is used for directly cooling a nose bridge area on the cylinder through an upper water jacket arranged on each cylinder and a lower water channel arranged on the upper water jacket, and then the cooling liquid is led into the lower water jacket and flows into a cooling channel of the cylinder body to cool the cylinder body. The cylinder cover cooling water jacket firstly cools the cylinder cover and then cools the cylinder body, can improve the cooling uniformity of the cylinder cover, reduce the flowing pressure drop of cooling liquid, improve the heat exchange efficiency, increase the thermal fatigue reliability of the cylinder cover, reduce the cracking risk of the high-heat part of the cylinder cover, and simultaneously have the characteristics of high cooling efficiency, simple structure and low manufacturing cost.
The invention also provides an engine, and the cylinder head of the engine comprises the cylinder head cooling water jacket according to any scheme; the cylinder cover of the engine can be cooled with high efficiency, the service life of the engine is prolonged, and the maintenance and use cost of the engine is reduced.
Drawings
FIG. 1 is a schematic view of a cylinder head cooling jacket provided in an embodiment of the present invention;
fig. 2 is a schematic view of an upper water jacket and a lower water jacket according to an embodiment of the present invention.
In the figure:
100. a liquid inlet main channel; 110. a liquid inlet branch channel;
200. a water jacket is arranged; 210. a drain passage; 220. a liquid inlet channel;
300. a lower water jacket; 310. a water outlet channel; 320. and the lower water cooling part.
Detailed Description
The invention is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present invention are shown in the drawings.
In the description of the present invention, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "right", etc. orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the invention. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.
Referring to fig. 1 to 2, the cylinder head cooling water jacket includes a plurality of upper water jackets 200 and a plurality of lower water jackets 300, the number of upper water jackets 200 corresponding to the number of cylinders (not shown in the drawings); the upper water jacket 200 has one end connected to a container (not shown) containing a coolant and the other end provided with a drain passage 210; the coolant can enter the lower water passage 210 from the upper water jacket 200 and cool a nose bridge region (not shown) of the cylinder; a plurality of lower water jackets 300 are provided above the cylinder head (not shown in the drawing), one ends of the plurality of lower water jackets 300 are communicated with the plurality of lower water passages 210 in one-to-one correspondence, and the other ends are provided with water outlet passages 310 communicated with a cylinder block cooling passage (not shown in the drawing).
The cylinder head cooling water jacket directly cools the nose bridge area on the cylinder through the upper water jacket 200 provided separately on each cylinder and through the lower water passage 210 provided on the upper water jacket 200, and then the cooling liquid is introduced into the lower water jacket 300 and flows into the cylinder block cooling passage to cool the cylinder block. The cylinder head cooling water jacket realizes the flow of cooling liquid from top to bottom, can cool the cylinder head first and cool the cylinder block second, improves the cooling uniformity of the cylinder head, reduces the flow pressure drop of the cooling liquid, improves the heat exchange efficiency, increases the thermal fatigue reliability of the cylinder head, reduces the cracking risk of the high-heat part of the cylinder head, and has the characteristics of high cooling efficiency, simple structure and low manufacturing cost.
Specifically, the cylinder head cooling water jacket further includes a liquid inlet main passage 100, and the liquid inlet main passage 100 is configured to communicate with a container containing a cooling liquid; the main liquid inlet channel 100 is provided with a plurality of liquid inlet branch channels 110, and the liquid inlet branch channels 110 are correspondingly communicated with the upper water jackets 200 one by one. The cooling liquid is pumped into the liquid inlet main channel 100 after being pressurized by the water pump, enters the corresponding upper water jacket 200 through the liquid inlet branch channel 110, and independently cools the cylinder cover corresponding to the upper water jacket 200, so that the cooling efficiency and the cooling uniformity can be improved, the damage of the cylinder cover due to thermal stress and thermal fatigue is prevented, the service life of the cylinder cover is prolonged, and the maintenance cost is reduced.
Further, the upper water jacket 200 is provided with a liquid inlet channel 220, and the liquid inlet channel 220 is matched and spliced with the liquid inlet branch channel 110. Through the feed liquor passageway 220 and the feed liquor branch passageway 110 intercommunication that uses the cooperation grafting with last water jacket 200 and feed liquor main passageway 100, can realize casting respectively and go up water jacket 200 and feed liquor main passageway 100, reduced the degree of difficulty of manufacturing to the mode easy operation of grafting, and easily realize the leakproofness that feed liquor passageway 220 and feed liquor branch passageway 110 are connected, prevent that the coolant liquid from revealing.
As a preferred embodiment, two adjacent upper water jackets 200 communicate with each other. Further, the liquid inlet passages 220 of the adjacent two upper water jackets 200 communicate with each other. The liquid inlet channels 220 of two adjacent upper water jackets 200 are communicated with each other and the same liquid inlet branch channel 110, so that the upper water jackets 200 communicated with each other can be integrally formed in a casting mode, the cooling efficiency and the cooling uniformity are further improved, the damage of the cylinder cover due to thermal stress and thermal fatigue is prevented, the service life of the cylinder cover is prolonged, and the maintenance cost is reduced
With continued reference to FIG. 2, optionally, a lower water jacket 300 is provided with a lower water cooler 320 in communication with the lower water passage 210, the lower water cooler 320 being disposed about the spark plug and fuel injector of the cylinder. The lower water cooling part 320 can cool the spark plug and the fuel injector of the cylinder, the cooling liquid directly rushes down from the lower water channel 210 to the nose bridge area to cool the nose bridge area, the lower water cooling part 320 immediately cools the spark plug arranged by the gasoline engine or the fuel injector arranged by the diesel engine, the whole cylinder cover is cooled, the cylinder cover is further cooled, and the cooling effect is improved.
Preferably, the upper water jacket 200 is integrally formed with and communicates with the lower water jacket 300. Further, the upper water jacket 200 and the lower water jacket 300 are integrally cast. The cylinder cover cooling water jacket manufactured by casting has the advantages of simple process, low cost and easy manufacture, and can realize the cooling mode of cooling the cylinder cover from top to bottom and then cooling the cylinder body without any external pipeline. Specifically, the sand cores of the upper water jacket 200 and the lower water jacket 300 are integrally formed, so that the upper water jacket 200 and the lower water jacket 300 are integrally formed and communicated after casting is finished, a subsequent machining process is not needed, the machining process is simplified, and the production and manufacturing cost is reduced.
Specifically, the cross-sectional dimensions of the main intake passage 100, the branch intake passage 110, the drain passage 210, the intake passage 220, the drain passage 310, and the lower water cooling portion 320 are determined by the flow rate and the flow velocity of the cooling liquid required for cooling the nose bridge region of the cylinder head and the cylinder block, so as to satisfy the cooling requirement of the nose bridge region. The flow rate and the flow velocity of the cooling liquid should be regulated by a water pump communicated with the liquid inlet main channel 100, so as to realize that the cooling channel can be filled with the cooling liquid, and further improve the cooling effect.
Alternatively, the water outlet passages 310 are provided in plurality, and the plurality of water outlet passages 310 are spaced apart along the circumferential direction of the cylinder. The plurality of water outlet channels 310 can completely lead the cooling liquid after cooling the cylinder cover into the cylinder body cooling channel at the outer periphery of the cylinder body, thereby realizing uniform cooling of the cylinder body and improving the cooling effect of the cylinder body.
The embodiment also provides an engine, wherein the cylinder head of the engine comprises the cylinder head cooling water jacket according to any one of the schemes; the cylinder cover of the engine can be cooled with high efficiency, the service life of the engine is prolonged, and the maintenance and use cost of the engine is reduced.
It is to be understood that the above examples of the present invention are provided for clarity of illustration only and are not limiting of the embodiments of the present invention. Various obvious changes, rearrangements and substitutions can be made by those skilled in the art without departing from the scope of the invention. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the invention are desired to be protected by the following claims.
Claims (6)
1. A cylinder head cooling water jacket, characterized by comprising:
a plurality of upper water jackets (200), the number of the upper water jackets (200) corresponding to the number of cylinders; one end of the upper water jacket (200) is communicated with a container for containing cooling liquid, and the other end of the upper water jacket is provided with a lower water channel (210); the cooling liquid can enter a lower water channel (210) from the upper water jacket (200) and cool the nose bridge area of the cylinder;
the plurality of lower water jackets (300) are arranged on the cylinder cover, one ends of the plurality of lower water jackets (300) are correspondingly communicated with the plurality of lower water channels (210) one by one, and the other ends of the plurality of lower water jackets are provided with water outlet channels (310) communicated with the cooling channels of the cylinder body;
a liquid inlet main channel (100), the liquid inlet main channel (100) being configured to communicate with a container containing a cooling liquid; a plurality of liquid inlet branch channels (110) are arranged on the liquid inlet main channel (100), and the liquid inlet branch channels (110) are correspondingly communicated with the upper water jackets (200) one by one;
a liquid inlet channel (220) is arranged on the upper water jacket (200), and the liquid inlet channel (220) is matched and spliced with the liquid inlet branch channel (110); two adjacent upper water jackets (200) are communicated with each other; the liquid inlet channels (220) of two adjacent upper water jackets (200) are communicated with each other.
2. The cylinder head cooling water jacket according to claim 1, characterized in that a lower water cooling portion (320) communicating with the lower water passage (210) is provided on the lower water jacket (300), the lower water cooling portion (320) being provided around a spark plug and a fuel injector of the cylinder.
3. The cylinder head cooling water jacket according to claim 1, characterized in that an upper water jacket (200) is integrally formed with and communicates with the lower water jacket (300).
4. The cylinder head cooling water jacket according to claim 3, characterized in that the upper water jacket (200) and the lower water jacket (300) are integrally cast.
5. The cylinder head cooling water jacket according to claim 1, characterized in that the water outlet passage (310) is provided in plurality, and the plurality of water outlet passages (310) are distributed at intervals along the circumferential direction of the cylinder.
6. An engine, characterized in that the cylinder head of the engine includes the cylinder head cooling water jacket according to any one of claims 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210248342.XA CN114576030B (en) | 2022-03-14 | 2022-03-14 | Cylinder cover cooling water jacket and engine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210248342.XA CN114576030B (en) | 2022-03-14 | 2022-03-14 | Cylinder cover cooling water jacket and engine |
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| Publication Number | Publication Date |
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| CN114576030A CN114576030A (en) | 2022-06-03 |
| CN114576030B true CN114576030B (en) | 2023-05-30 |
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| CN115182824B (en) * | 2022-07-13 | 2024-02-27 | 隆鑫通用动力股份有限公司 | Multi-cylinder engine with split water cooling jacket |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR100435961B1 (en) * | 2001-10-08 | 2004-06-12 | 현대자동차주식회사 | Manufacturing method for water jacket throttle of cylinder head |
| KR20090064055A (en) * | 2007-12-14 | 2009-06-18 | 현대자동차주식회사 | Cylinder head |
| CN201326468Y (en) * | 2008-12-09 | 2009-10-14 | 奇瑞汽车股份有限公司 | Cylinder cover with cooling water jacket |
| CN101655027A (en) * | 2009-09-08 | 2010-02-24 | 奇瑞汽车股份有限公司 | Engine cooling system and cooling method |
| JP6992671B2 (en) * | 2018-05-09 | 2022-01-13 | トヨタ自動車株式会社 | Water jacket structure |
| CN209228480U (en) * | 2018-12-25 | 2019-08-09 | 长城汽车股份有限公司 | Cylinder head, engine and vehicle |
| CN112576401B (en) * | 2019-09-30 | 2022-08-26 | 广州汽车集团股份有限公司 | Double-deck cylinder head water jacket, cylinder and vehicle |
| CN112682207A (en) * | 2019-10-17 | 2021-04-20 | 广州汽车集团股份有限公司 | Engine cylinder cover cooling water jacket and engine |
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