CN111878247B - Engine cooling system and automobile - Google Patents
Engine cooling system and automobile Download PDFInfo
- Publication number
- CN111878247B CN111878247B CN202010858807.4A CN202010858807A CN111878247B CN 111878247 B CN111878247 B CN 111878247B CN 202010858807 A CN202010858807 A CN 202010858807A CN 111878247 B CN111878247 B CN 111878247B
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- water jacket
- coolant
- engine
- cooling liquid
- water pump
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- 238000001816 cooling Methods 0.000 title claims abstract description 60
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 158
- 239000002826 coolant Substances 0.000 claims abstract description 112
- 210000000476 body water Anatomy 0.000 claims abstract description 21
- 239000000110 cooling liquid Substances 0.000 claims description 49
- 238000004891 communication Methods 0.000 claims description 13
- 239000010705 motor oil Substances 0.000 claims description 6
- 230000009286 beneficial effect Effects 0.000 abstract description 6
- 239000012809 cooling fluid Substances 0.000 description 18
- 239000007789 gas Substances 0.000 description 10
- 239000003921 oil Substances 0.000 description 9
- 230000000694 effects Effects 0.000 description 7
- 230000008901 benefit Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000004134 energy conservation Methods 0.000 description 3
- 230000002411 adverse Effects 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 239000002918 waste heat Substances 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000001010 compromised effect Effects 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
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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
- F02F1/02—Cylinders; Cylinder heads having cooling means
- F02F1/10—Cylinders; Cylinder heads having cooling means for liquid cooling
- F02F1/16—Cylinder liners of wet type
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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
Landscapes
- 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
本发明提供了一种发动机冷却系统和汽车，涉及汽车发动机技术领域。发动机冷却系统，包括水泵、缸盖水套和缸体水套，缸盖水套设置有相互连通的第一冷却液入口和第一冷却液出口，第一冷却液入口与水泵连通，缸体水套设置有与第一冷却液出口连通的第二冷却液入口，缸体水套设置有第二冷却液出口，第二冷却液出口与水泵连通，以使来自水泵的冷却液能先进入缸盖水套对缸盖进行冷却后，再流入缸体水套以对发动机缸体进行冷却后回至水泵。汽车包括上述发动机冷却系统。发动机冷却系统有利于提高冷却液的冷量利用效益，降低对发动机性能的影响。
The present invention provides an engine cooling system and an automobile, and relates to the technical field of automobile engines. The engine cooling system comprises a water pump, a cylinder head water jacket and a cylinder body water jacket, the cylinder head water jacket is provided with a first coolant inlet and a first coolant outlet which are interconnected, the first coolant inlet is connected to the water pump, the cylinder body water jacket is provided with a second coolant inlet which is connected to the first coolant outlet, the cylinder body water jacket is provided with a second coolant outlet, and the second coolant outlet is connected to the water pump, so that the coolant from the water pump can first enter the cylinder head water jacket to cool the cylinder head, and then flow into the cylinder body water jacket to cool the engine cylinder body and then return to the water pump. The automobile comprises the above-mentioned engine cooling system. The engine cooling system is beneficial to improving the cold utilization efficiency of the coolant and reducing the impact on the engine performance.
Description
Technical Field
The invention relates to the technical field of automobile engines, in particular to an engine cooling system and an automobile.
Background
The engine cooling system mainly has two functions, namely, on one hand, excessive heat generated during normal operation of the engine is taken away in time to avoid various adverse phenomena, and on the other hand, during cold start of the engine, the engine is enabled to reach normal operating temperature as soon as possible (quick warm-up) so as to reduce friction work of the engine and improve fuel economy of the engine.
However, in the existing engine cooling system, the cooling liquid is directly divided into two parts after flowing out of the water pump, one part flows into the cylinder body water jacket, and the other part flows into the cylinder cover water jacket, so that the flowing mode is not beneficial to improving the cold energy utilization benefit of the cooling liquid and influencing the engine performance.
Disclosure of Invention
The invention aims to provide an engine cooling system and an automobile, which are beneficial to improving the cold energy utilization benefit of cooling liquid and reducing the influence on the engine performance.
Embodiments of the invention may be implemented as follows:
In a first aspect, an embodiment of the present invention provides an engine cooling system, including a water pump, a cylinder head water jacket, and a cylinder body water jacket, where the cylinder head water jacket is provided with a first coolant inlet and a first coolant outlet that are mutually communicated, the first coolant inlet is communicated with the water pump, the cylinder body water jacket is provided with a second coolant inlet that is communicated with the first coolant outlet, and the cylinder body water jacket is provided with a second coolant outlet that is communicated with the water pump, so that coolant from the water pump can first enter the cylinder head water jacket to cool a cylinder head, and then flow into the cylinder body water jacket to cool an engine cylinder body, and then return to the water pump.
In an alternative embodiment, the cylinder head water jacket comprises a cylinder head upper water jacket and a cylinder head lower water jacket, the cylinder head upper water jacket is arranged above the cylinder head lower water jacket, and the first cooling liquid inlet and the first cooling liquid outlet are both arranged on the cylinder head lower water jacket.
In an alternative embodiment, the first coolant inlet is provided at a side of the under-head water jacket near the exhaust side of the engine, and the first coolant outlet is provided at a side of the under-head water jacket near the intake side of the engine.
In an alternative embodiment, the upper head jacket is provided with a third coolant inlet, the lower head jacket is provided with an interface in communication with the first coolant inlet, and the third coolant inlet communicates with the interface so that a portion of the coolant entering the lower head jacket can enter the upper head jacket.
In an alternative embodiment, the water jacket on the cylinder cover is provided with a third cooling liquid outlet which is simultaneously communicated with the third cooling liquid inlet and the water pump, and the third cooling liquid outlet is positioned on one side of the water jacket on the cylinder cover, which is close to the exhaust side of the engine.
In an alternative embodiment, the third coolant outlet communicates with the second coolant outlet and then with the water pump.
In an alternative embodiment, the engine cooling system comprises an engine oil cooler provided with a fourth coolant inlet and a fourth coolant outlet in communication with each other, the fourth coolant inlet being in communication with the block water jacket, the fourth coolant outlet being in communication with the second coolant outlet.
In an alternative embodiment, the water pump comprises an electric water pump, the electric water pump being connected to the first coolant inlet.
In an alternative embodiment, the engine cooling system includes a warm air core and an exhaust gas recirculation cooler, the inlet of the warm air core being in communication with the second coolant outlet, the outlet of the warm air core being in communication with the inlet of the exhaust gas recirculation cooler, the outlet of the exhaust gas recirculation cooler being in communication with the water pump.
In a second aspect, an embodiment of the invention provides an automotive vehicle comprising an engine cooling system according to any one of the preceding embodiments.
The beneficial effects of the embodiment of the invention include:
The engine cooling system comprises a water pump, a cylinder cover water jacket and a cylinder body water jacket. The cooling liquid carries enough cold energy when flowing out from the water pump, so that the cooling liquid can cool the cylinder cover as much as possible when flowing into the water jacket of the cylinder cover, and heat near the cylinder cover is brought away as much as possible. Then, the cooling liquid flowing out of the cylinder cover water jacket enters the cylinder body water jacket to cool the cylinder body, at the moment, the cooling capacity carried by the cooling liquid is reduced, the heat is increased, and when the cylinder body is cooled, the temperature of the cylinder body is not too low, so that friction between the engine piston and the cylinder barrel is reduced, and the engine performance is improved. The cooling liquid in the engine cooling system flows to enable the cooling capacity distribution to be more reasonable, a better cooling effect can be obtained by using smaller cooling liquid flow, the cooling capacity utilization benefit of the cooling liquid is improved, and meanwhile, the influence on the engine performance can be reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the cylinder block water jacket and the head water jacket in an embodiment of the invention;
FIG. 2 is a schematic view of a cylinder head according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of an engine cooling system according to an embodiment of the present invention;
fig. 4 is a flow path diagram of cooling fluid in the head water jacket and the block water jacket in an embodiment of the invention.
The icons are 100-engine cooling system, 110-water pump, 120-head water jacket, 121-first cooling fluid inlet, 122-first cooling fluid outlet, 123-head upper water jacket, 124-head lower water jacket, 125-third cooling fluid inlet, 126-third cooling fluid outlet, 127-interface, 140-cylinder water jacket, 141-second cooling fluid inlet, 142-second cooling fluid outlet, 144-manifold, 150-engine oil cooler, 151-fourth cooling fluid inlet, 152-fourth cooling fluid outlet, 160-warm air core, 170-exhaust gas recirculation cooler, 175-supercharger, 180-thermostat, 181-radiator, 182-expansion tank, 184-bypass line.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that like reference numerals and letters refer to like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present invention, it should be noted that, if the terms "upper", "lower", "inner", "outer", and the like indicate an azimuth or a positional relationship based on the azimuth or the positional relationship shown in the drawings, or the azimuth or the positional relationship in which the inventive product is conventionally put in use, it is merely for convenience of describing the present invention and simplifying the description, and it is not indicated or implied that the apparatus or element referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus it should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, if any, are used merely for distinguishing between descriptions and not for indicating or implying a relative importance.
It should be noted that the features of the embodiments of the present invention may be combined with each other without conflict.
In the existing engine cooling system in the automobile, the cooling liquid carrying a large amount of cooling capacity flows out of the water pump and is directly divided into two paths, one path flows through the cylinder cover water jacket to cool the cylinder cover, the other path flows through the cylinder body water jacket to cool the cylinder body, and the cooling liquid absorbing heat can also return to the water pump after heat release so as to realize circulation of the cooling liquid. The cylinder cover water jacket and the cylinder body water jacket are cooling liquid flowing channels in the cylinder cover or the cylinder body. However, the cooling requirements of the engine block and the cylinder head are not exactly the same, the temperature of the cylinder head is reduced to facilitate the cooling of the engine, and the excessive cooling of the cylinder block easily affects the viscosity of oil liquid so as to promote the friction between the engine piston and the cylinder barrel. Therefore, in the conventional engine cooling system, the cooling capacity utilization efficiency of the coolant is low.
In order to improve the above-mentioned problems, referring to fig. 1, 2 and 3, the present embodiment provides an automobile, which includes an engine cooling system 100, wherein the engine cooling system 100 timely takes away the excessive heat generated during the normal operation of the engine, so as to avoid various adverse phenomena.
The engine cooling system 100 includes a water pump 110, a head water jacket 120, and a block water jacket 140. The head jacket 120 is provided with a first coolant inlet 121 and a first coolant outlet 122 that communicate with each other, the first coolant inlet 121 communicating with the water pump 110. The block water jacket 140 is provided with a second coolant inlet 141 communicating with the first coolant outlet 122, the block water jacket 140 is provided with a second coolant outlet 142, and the second coolant outlet 142 communicates with the water pump 110, so that the coolant from the water pump 110 can flow into the block water jacket 140 to cool the engine block and return to the water pump 110 after the cylinder head is cooled by the cylinder head water jacket 120.
In the present embodiment, since the engine cooling system 100 has a low performance requirement for the water pump 110, the water pump 110 includes an electric water pump connected to the first coolant inlet 121. Specifically, the outlet of the water pump 110 is connected to the first coolant inlet 121, so that the coolant flowing out of the water pump 110 can enter the head jacket 120. In other embodiments, the water pump 110 may also employ a mechanical water pump 110.
In the present embodiment, the head water jacket 120 includes a head upper water jacket 123 and a head lower water jacket 124. The cylinder head upper water jacket 123 is disposed above the cylinder head lower water jacket 124, and the first coolant inlet 121 and the first coolant outlet 122 are both disposed in the cylinder head lower water jacket 124. Specifically, in order to further achieve the heat dissipation effect, the cylinder head lower water jacket 124 is located between the cylinder block water jacket 140 and the cylinder head upper water jacket 123, the first coolant inlet 121 is disposed at a side of the cylinder head lower water jacket 124 near the exhaust side of the engine, and the first coolant outlet 122 is disposed at a side of the cylinder head lower water jacket 124 near the intake side of the engine. Thereby, the coolant flows from the exhaust side to the intake side. The hottest area of the engine is an integrated exhaust manifold and a combustion chamber, so that more waste heat is generated on the exhaust side, if the cooling liquid flows from the air inlet side to the exhaust side, the cooling liquid can absorb the waste heat on the air inlet side before cooling the exhaust side, and the heat exchange between the hottest area and the maximum cooling capacity of the cooling liquid cannot be realized, so that the heat dissipation effect of the engine is affected.
It will be appreciated that in other embodiments, the head jacket 120 may not be divided into the head upper jacket 123 and the head lower jacket 124, and may be provided according to actual needs.
Meanwhile, the head upper water jacket 123 is provided with a third coolant inlet 125 and a third coolant outlet 126. The head lower water jacket 124 is provided with an interface 127 that communicates with the first coolant inlet 121, the interface 127 being located between the first coolant inlet 121 and the first coolant outlet 122. The third coolant inlet 125 communicates with the port 127 to enable a portion of the coolant that enters the head lower water jacket 124 to enter the head upper water jacket 123. Referring to fig. 4, in this embodiment, a part of the coolant flows into the block water jacket 140 from the first coolant outlet 122 while flowing through the under-head water jacket 124, and another part of the coolant flows into the upper-head water jacket 123 from the port 127, thereby completing the cooling of the entire cylinder head. The third coolant outlet 126 communicates with the third coolant inlet 125 and the water pump 110 at the same time, and the third coolant outlet 126 is located on the side of the head upper water jacket 123 near the engine exhaust side. That is, the coolant flowing out of the head upper water jacket 123 eventually returns to the water pump 110. The flow distribution of the coolant entering the head jacket 123 and the coolant entering the block jacket 140 can be adjusted by setting the size of the interface 127, and in this embodiment, in order to achieve a better cooling effect, the coolant entering the head jacket 123 is 70% and the coolant entering the block jacket 140 is 30%.
In this embodiment, to save space, the third coolant outlet 126 and the second coolant outlet 142 are communicated with each other and then with the water pump 110. Specifically, the third coolant outlet 126 and the second coolant outlet 142 are both in communication with a manifold 144, and the manifold 144 is in communication with an inlet of the water pump 110. Thus, the coolant flowing out of the head upper water jacket 123 and the coolant flowing out of the block water jacket 140 are merged together and finally returned to the water pump 110. It is understood that in other embodiments, the third coolant outlet 126 and the second coolant outlet 142 may not be in communication with each other, such that the coolant flowing from the head upper water jacket 123 and the coolant flowing from the block water jacket 140 may be returned to the water pump 110, respectively.
The block water jacket 140 is located below the head water jacket 120. The coolant enters the cylinder water jacket 140 from the second coolant inlet 141, and flows out of the cylinder water jacket 140 from the second coolant outlet 142. In the present embodiment, the engine cooling system 100 further includes an oil cooler 150, the oil cooler 150 being provided with a fourth coolant inlet 151 and a fourth coolant outlet 152 that communicate with each other, the fourth coolant inlet 151 communicating with the block water jacket 140, the fourth coolant outlet 152 communicating with the second coolant outlet 142. Thus, a part of the coolant entering the cylinder water jacket 140 can enter the oil cooler 150 through the fourth coolant inlet 151 to cool the engine oil, and another part passes through the cylinder water jacket 140 to cool the cylinder, and the coolant passing through the oil cooler 150 can flow out to be merged with the coolant passing through the cylinder water jacket 140, and finally returns to the water pump 110. That is, in the present embodiment, the performance requirements for the water pump 110 can be effectively reduced, similar to the parallel relationship between the oil cooler 150 and the cylinder water jacket 140. It will be appreciated that in other embodiments, the fourth coolant outlet 152 may be connected to the water pump 110 instead of the second coolant outlet 142, and need only be provided as desired.
In the present embodiment, engine cooling system 100 includes a warm air core 160 and an exhaust gas recirculation cooler 170. The inlet of the warm air core 160 communicates with the second coolant outlet 142, and in detail, the inlet of the warm air core 160 communicates with the collecting pipe 144, the outlet of the warm air core 160 communicates with the inlet of the egr cooler 170, and the outlet of the egr cooler 170 communicates with the water pump 110. Because the cooling liquid flowing out of the cylinder head upper water jacket 123 and the cylinder body water jacket 140 are converged together and carry a certain amount of heat, the part of heat can be secondarily utilized in the warm air core 160, and because the cooling liquid has a good effect of absorbing heat when being upstream, higher-efficiency heat exchange can be performed in the warm air core 160, more heat can be provided for the warm air core 160, so that the warm air core 160 can generate more warm air, and the energy conservation and the cooling of the cooling liquid are facilitated. The cooling liquid passing through the warm air core 160 again carries cold energy to enter the exhaust gas recirculation cooler 170, and a part of exhaust gas exhausted by the automobile is cooled to facilitate the subsequent cyclic utilization, thereby being beneficial to improving the environmental protection property and better realizing energy conservation and emission reduction. The outlet of the egr cooler 170 communicates with the inlet of the water pump 110, and the coolant flowing out of the egr cooler 170 finally flows back to the water pump 110 to perform a new cycle of cooling.
In addition, since the coolant flowing out of the head and block water jackets 120, 140 still carries some amount of cooling, in this embodiment, the manifold 144 is also connected to the inlet of the supercharger 175, so that the coolant flowing out of the head and block water jackets 120, 140 can further cool the supercharger 175. The outlet of the booster 175 is connected to the inlet of the water pump 110.
In addition, in the present embodiment, the engine system further includes a thermostat 180, a radiator 181, and an expansion tank 182. The thermostat 180 has a first joint, a second joint, and a third joint. The first connection communicates with the manifold 144, the second connection communicates with the radiator 181, and the third connection communicates with the inlet of the water pump 110 via a bypass line 184. When the temperature of the cooling liquid in the collecting pipe 144 is too high, the first connector is communicated with the second connector, so that the cooling liquid enters the radiator 181 to radiate heat. When the temperature is not too high, the first joint communicates with the third joint and the coolant is returned to the water pump 110 via the bypass line 184. The thermostat 180 automatically adjusts the amount of water entering the radiator 181 according to the temperature of the cooling water, and changes the circulation range of the water to adjust the heat radiation capacity of the cooling system, thereby ensuring that the engine works in a proper temperature range. The thermostat 180 must maintain a good state of technology or else the engine's proper operation may be severely compromised.
The inlet of the expansion tank 182 communicates with the manifold 144 and the outlet of the expansion tank 182 communicates with the inlet of the water pump 110. The radiator 181 communicates not only with the water pump 110 but also with the inlet of the expansion tank 182. The expansion tank 182 is used for discharging the gas generated by the expansion and contraction of the coolant to maintain the normal circulation of the coolant of the entire engine cooling system 100.
The engine cooling system 100 operates on the following principle and process:
The cooling fluid enters the cylinder head lower water jacket 124 from the first cooling fluid inlet 121 under the driving of the water pump 110, then 70% of the cooling fluid enters the cylinder head upper water jacket 123,30% of the cooling fluid enters the cylinder body water jacket 140 through the first cooling fluid outlet 122. After entering the head upper water jacket 123, the coolant flows out from the third coolant outlet 126 to the header pipe 144, thereby completing the cooling of the head.
A part of the cooling fluid after entering the cylinder water jacket 140 passes through the fourth cooling fluid inlet 151 and enters the oil cooler 150, so that the oil cooler 150 cools the engine oil. The coolant passing through the oil cooler 150 flows out from the fourth coolant outlet 152 to the header 144. Therefore, the coolant passing through the head water jacket 120 and the block water jacket 140 all together flow out.
Part of the cooling liquid flowing through the collecting pipe 144 can be used for cooling the booster 175, and the other part of the cooling liquid can be used for cooling the exhaust gas recirculation cooler 170 after supplying heat for the warm air core 160, so that the energy utilization rate is effectively improved, and energy conservation and emission reduction are facilitated. Meanwhile, the radiator 181 can timely dissipate heat of the cooling liquid, and the expansion tank 182 can timely exhaust gas generated by thermal expansion and cold contraction so as to maintain normal circulation of the cooling system. Eventually all of the coolant flows back to the inlet of the water pump 110 for the next cycle.
The engine cooling system 100 can make the cooling fluid flow through the cylinder cover water jacket 120 and then through the cylinder body water jacket 140, cool the cylinder cover when the cooling fluid carries the most cold, and then cool the cylinder body with a little lower cooling requirement, thereby obtaining better cooling effect, maximizing the cold utilization, being beneficial to improving the engine performance and realizing better energy-saving effect.
The present invention is not limited to the above embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present invention are intended to be included in the scope of the present invention. Therefore, the protection scope of the invention is subject to the protection scope of the claims.
Claims (7)
1. The engine cooling system is characterized by comprising a water pump, a cylinder cover water jacket and a cylinder body water jacket, wherein the cylinder cover water jacket is provided with a first cooling liquid inlet and a first cooling liquid outlet which are communicated with each other, the first cooling liquid inlet is communicated with the water pump, the cylinder body water jacket is provided with a second cooling liquid inlet communicated with the first cooling liquid outlet, and the cylinder body water jacket is provided with a second cooling liquid outlet which is communicated with the water pump, so that cooling liquid from the water pump can firstly enter the cylinder cover water jacket to cool a cylinder cover and then flow into the cylinder body water jacket to cool an engine cylinder body and then return to the water pump;
The cylinder cover water jacket comprises a cylinder cover upper water jacket and a cylinder cover lower water jacket, the cylinder cover upper water jacket is arranged above the cylinder cover lower water jacket, and the first cooling liquid inlet and the first cooling liquid outlet are both arranged on the cylinder cover lower water jacket;
the cylinder cover upper water jacket is provided with a third cooling liquid inlet, the cylinder cover lower water jacket is provided with an interface communicated with the first cooling liquid inlet, and the third cooling liquid inlet is communicated with the interface so that part of cooling liquid entering the cylinder cover lower water jacket can enter the cylinder cover upper water jacket;
The engine cooling system comprises an engine oil cooler, wherein a fourth cooling liquid inlet and a fourth cooling liquid outlet which are mutually communicated are formed in the engine oil cooler, the fourth cooling liquid inlet is communicated with the cylinder body water jacket, and the fourth cooling liquid outlet is communicated with the second cooling liquid outlet.
2. The engine cooling system of claim 1, wherein the first coolant inlet is disposed on a side of the under-head water jacket that is adjacent to an exhaust side of the engine, and the first coolant outlet is disposed on a side of the under-head water jacket that is adjacent to an intake side of the engine.
3. The engine cooling system of claim 1, wherein the head jacket is provided with a third coolant outlet that communicates with the third coolant inlet and the water pump at the same time, the third coolant outlet being located on a side of the head jacket that is adjacent to an engine exhaust side.
4. The engine cooling system of claim 3, wherein the third coolant outlet communicates with the second coolant outlet before communicating with the water pump.
5. The engine cooling system of claim 1, wherein the water pump comprises an electric water pump connected to the first coolant inlet.
6. The engine cooling system of claim 1, comprising a warm air core and an exhaust gas recirculation cooler, an inlet of the warm air core in communication with the second coolant outlet, an outlet of the warm air core in communication with an inlet of the exhaust gas recirculation cooler, and an outlet of the exhaust gas recirculation cooler in communication with the water pump.
7. An automobile comprising the engine cooling system according to any one of claims 1 to 6.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010858807.4A CN111878247B (en) | 2020-08-24 | 2020-08-24 | Engine cooling system and automobile |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010858807.4A CN111878247B (en) | 2020-08-24 | 2020-08-24 | Engine cooling system and automobile |
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| CN111878247A CN111878247A (en) | 2020-11-03 |
| CN111878247B true CN111878247B (en) | 2025-03-14 |
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| CN221921161U (en) * | 2024-04-16 | 2024-10-29 | 比亚迪股份有限公司 | Engine and vehicle |
| CN119244391A (en) * | 2024-11-06 | 2025-01-03 | 一汽解放汽车有限公司 | Cylinder coolant jacket, diesel engine and vehicle |
| CN119508084A (en) * | 2024-11-20 | 2025-02-25 | 重庆小康动力有限公司 | Engine cooling system and automobile |
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| CN110242396A (en) * | 2019-06-26 | 2019-09-17 | 浙江吉利控股集团有限公司 | A kind of engine-cooling system and vehicle for vehicle |
| CN212642889U (en) * | 2020-08-24 | 2021-03-02 | 海马汽车有限公司 | Engine cooling system and automobile |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR20070064970A (en) * | 2005-12-19 | 2007-06-22 | 현대자동차주식회사 | Cylinder Head Water Jacket Structure |
| US20120132155A1 (en) * | 2010-06-25 | 2012-05-31 | Cummins Intellecutal Properties, Inc. | Cylinder head having plural water jackets and cast-in water rail |
| JP2018080679A (en) * | 2016-11-18 | 2018-05-24 | トヨタ自動車株式会社 | cylinder head |
| CN111396186B (en) * | 2020-04-16 | 2023-08-08 | 昆明云内动力股份有限公司 | Split type cooling system and method for engine |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110242396A (en) * | 2019-06-26 | 2019-09-17 | 浙江吉利控股集团有限公司 | A kind of engine-cooling system and vehicle for vehicle |
| CN212642889U (en) * | 2020-08-24 | 2021-03-02 | 海马汽车有限公司 | Engine cooling system and automobile |
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