CN214035861U - Engine cooling system - Google Patents
Engine cooling system Download PDFInfo
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- CN214035861U CN214035861U CN202022736352.7U CN202022736352U CN214035861U CN 214035861 U CN214035861 U CN 214035861U CN 202022736352 U CN202022736352 U CN 202022736352U CN 214035861 U CN214035861 U CN 214035861U
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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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Abstract
The application discloses an engine cooling system, which comprises a thermostat, a heat exchanger, an intercooler, a flow divider, a machine body and a driving pump for driving cooling liquid to flow; a first outlet of the thermostat is connected with an inlet of the heat exchanger through a first pipeline, an outlet of the heat exchanger is connected with an inlet of the intercooler, a second outlet of the thermostat is connected with an inlet of the intercooler through a bypass pipeline, and the first pipeline and the bypass pipeline are controlled by the thermostat to be in an on-off state; the shunt is provided with an inlet, a first outlet and a second outlet, the first outlet of the shunt is connected with the inlet of the thermostat, the second outlet of the shunt is connected with the inlet of the engine body, and the outlet of the engine body and the outlet of the intercooler are respectively connected with the inlet of the shunt through a gathering pipeline. The engine cooling system provided by the application can reduce the air inlet temperature after the engine is cooled, increase the air inlet amount of the engine, improve the fuel economy of the engine, improve the exhaust smoke intensity level and reduce the gas emission of the engine.
Description
Technical Field
The application relates to the technical field of engine cooling, in particular to an engine cooling system.
Background
The existing marine engine cooling system cools engine coolant and intercooler coolant through an external heat exchanger, and under the condition of the same heat exchange amount, because the coolant flow is too large, the temperature of the coolant cannot be lower, so that the coolant with lower temperature cannot be provided for the intercooler, and the temperature of the coolant at the rear of the intercooler is too high. Meanwhile, the density of air is related to the temperature, and the excessively high intake air temperature after intercooling can reduce the air intake amount of the engine and reduce the air-fuel ratio of the engine, thereby causing the conditions of poor fuel economy, large exhaust smoke intensity and poor gas emission of the engine.
In summary, how to reduce the intake air temperature after intercooling is a problem to be solved urgently by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
In view of the above, an object of the present application is to provide an engine cooling system, which can reduce the cold intake air temperature in the engine, increase the intake air amount of the engine, improve the fuel economy of the engine, improve the exhaust smoke level, and reduce the gas emission of the engine.
In order to achieve the above purpose, the present application provides the following technical solutions:
an engine cooling system comprises a thermostat, a heat exchanger, an intercooler, a flow divider, a machine body and a driving pump for driving cooling liquid to flow; a first outlet of the thermostat is connected with an inlet of the heat exchanger through a first pipeline, an outlet of the heat exchanger is connected with an inlet of the intercooler, a second outlet of the thermostat is connected with an inlet of the intercooler through a bypass pipeline, and the first pipeline and the bypass pipeline are controlled by the thermostat to be in an on-off state; the flow divider is provided with an inlet, a first outlet and a second outlet, the first outlet of the flow divider is connected with the inlet of the thermostat, the second outlet of the flow divider is connected with the inlet of the engine body, and the outlet of the engine body and the outlet of the intercooler are respectively connected with the inlet of the flow divider through a gathering pipeline.
Optionally, the engine body includes an engine oil cooler, an engine cylinder and an engine body water outlet pipe, the second outlet of the flow divider is connected to the inlet of the engine oil cooler, the outlet of the engine oil cooler is connected to the inlet of the engine cylinder, the outlet of the engine cylinder is connected to the inlet of the engine body water outlet pipe, and the outlet of the engine body water outlet pipe is connected to the inlet of the collecting pipeline.
Optionally, the engine body further comprises a first water jacket for cooling and insulating the exhaust manifold, an inlet of the first water jacket pipeline is connected with an outlet of the engine cylinder body, and an outlet of the first water jacket pipeline is connected with an inlet of the engine body water outlet pipe.
Optionally, the engine body further comprises a second water jacket for cooling and insulating the turbocharger, an inlet of a second water jacket pipeline is connected with an outlet of the engine oil cooler, and an outlet of the second water jacket pipeline is connected with an inlet of the engine body water outlet pipe.
Optionally, the expansion water tank is communicated with the collecting pipeline through a water replenishing pipe, and a degassing pipe is arranged between the expansion water tank and the second water jacket pipeline.
Optionally, the flow rate of the first outlet of the flow divider is less than the flow rate of the second outlet of the flow divider.
Optionally, a ratio of the flow rate of the first outlet of the flow divider to the flow rate of the second outlet of the flow divider is 1: 2.
Optionally, the drive pump is provided in the collecting line.
Through above-mentioned scheme, the engine cooling system that this application provided's beneficial effect lies in:
the engine cooling system comprises a thermostat, a heat exchanger, an intercooler, a flow divider, a machine body and a driving pump for driving cooling liquid to flow; the thermostat is provided with two outlets, a first outlet of the thermostat is connected with an inlet of the heat exchanger through a first pipeline, a second outlet of the thermostat is connected with an inlet of the intercooler through a bypass pipeline, the on-off state of the first pipeline and the bypass pipeline is controlled by the thermostat, and the outlet of the heat exchanger is connected with the inlet of the intercooler; the shunt is provided with an inlet, a first outlet and a second outlet, the first outlet of the shunt is connected with the inlet of the thermostat, the second outlet of the shunt is connected with the inlet of the engine body, and the outlet of the engine body and the outlet of the intercooler are respectively connected with the inlet of the shunt through a gathering pipeline.
In the working process, the cooling liquid is divided into two paths by the flow divider, the second path of cooling liquid directly enters the engine body to cool the engine, and finally flows out of the collecting pipeline; after the first path of cooling liquid is cooled by the external heat exchanger, the temperature is obviously reduced, the first path of cooling liquid enters the intercooler to cool the pressurized air and finally enters the collecting pipeline, the first path of cooling liquid and the second path of cooling liquid are mixed in the collecting pipeline to realize the cooling of the second path of cooling liquid, and finally the cooling liquid flows to the flow divider and enters the next cooling circulation.
Because the cooling liquid is divided into two paths, only the first path of cooling liquid enters the external heat exchanger for cooling, the flow of the cooling liquid passing through the heat exchanger is reduced, the temperature of the first path of cooling liquid is lower, the first path of cooling liquid with lower temperature preferentially enters the intercooler for cooling, and the air inlet temperature after intercooling is reduced. And on the basis of guaranteeing the air inlet temperature after intercooling, the heat dissipation area of the intercooler does not need to be additionally increased.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic structural diagram of an engine cooling system according to an embodiment of the present disclosure;
FIG. 2 is a simplified schematic diagram of an engine cooling system provided by an embodiment of the present application; arrows above and below the heat exchanger in the figure indicate the heat exchanger inlet water and the heat exchanger outlet water, respectively.
The reference numbers in the figures are: the engine comprises a thermostat 1, a first pipeline 101, a bypass pipeline 102, a heat exchanger 2, an intercooler 3, a flow divider 4, a machine body 5, an engine oil cooler 501, an engine block 502, a machine body water outlet pipe 503, a first water jacket 504, a first water jacket pipeline 505, a second water jacket 506, a second water jacket pipeline 507, a driving pump 6, a collecting pipeline 7, an expansion water tank 8, a water supplementing pipe 801, a degassing pipe 802, a turbocharger 9 and an exhaust manifold 10.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Referring to fig. 1 and 2, the present application provides an engine cooling system comprising: the system comprises a thermostat 1, a heat exchanger 2, an intercooler 3, a flow divider 4, a machine body 5, a driving pump 6 and a connecting pipeline.
The thermostat 1 is provided with two outlets, a first outlet of the thermostat 1 is connected with an inlet of the heat exchanger 2 through a first pipeline 101, a second outlet of the thermostat 1 is connected with an inlet of the intercooler 3 or an outlet of the heat exchanger 2 through a bypass pipeline 102, and the on-off state of the first pipeline 101 and the bypass pipeline 102 is controlled by the thermostat 1. Thermostat 1 can switch to opening, half-open, closed state according to coolant temperature, controls the flow direction of coolant liquid, and thermostat 1 opening state coolant liquid is whole through first pipeline 101 and heat exchanger 2, and closed state coolant liquid is whole through bypass pipeline 102, and half-open state first pipeline 101 and bypass pipeline 102 all have the coolant liquid to pass through.
The heat exchanger 2 is used for exchanging heat with the cooling liquid through a heat exchange medium to cool the cooling liquid. The outlet of the heat exchanger 2 is connected with the inlet of the intercooler 3.
The intercooler 3 is a water-air intercooler, and the intercooler 3 is arranged in an air inlet pipeline of the engine and used for reducing the air inlet temperature of the engine.
The flow divider 4 divides the cooling liquid in the collecting pipeline 7 into two paths, the first path of cooling liquid is introduced into the thermostat 1 and the intercooler 3, and the second path of cooling liquid is introduced into the engine body 5. Specifically, the flow divider 4 is provided with an inlet, a first outlet and a second outlet, the first outlet of the flow divider 4 is connected with the inlet of the thermostat 1, the second outlet of the flow divider 4 is connected with the inlet of the engine body 5, and the inlet of the flow divider 4 is connected with the outlet of the collecting pipeline 7.
The two paths of cooling liquid flowing out of the engine body 5 and the intercooler 3 are gathered together by the gathering pipeline 7, and an inlet of the gathering pipeline 7 is connected with an outlet of the engine body 5 and an outlet of the intercooler 3.
The driving pump 6 is used for driving the cooling liquid to circularly flow in the pipeline. The drive pump 6 may be arranged at the inlet of the flow divider 4, for example at the collecting line 7. The drive pump 6 may be provided at another position, and may drive the flow of the coolant.
In the working process, the cooling liquid is divided into two paths after passing through the flow divider 4, the second path of cooling liquid directly enters the engine body 5 to cool the engine, and finally enters the collecting pipeline 7. If the thermostat 1 is closed, the first path of cooling liquid directly enters the intercooler 3 without passing through the heat exchanger 2; if the thermostat 1 is opened, the first path of cooling liquid is cooled by the external heat exchanger 2 to obtain cooling liquid with lower temperature, then the cooling liquid enters the intercooler 3 to cool the pressurized air, and finally the cooling liquid enters the collecting pipeline 7. The first path of cooling liquid and the second path of cooling liquid are mixed in the collecting pipeline 7, the first path of cooling liquid cools the second path of cooling liquid, and finally all cooling liquid flows to the flow divider 4 again to enter the next cooling circulation.
Optionally, in an embodiment, the engine body 5 includes an oil cooler 501, an engine block 502, and an engine body water outlet pipe 503, which are connected in series. Specifically, a second outlet of the flow divider 4 is connected to an inlet of the oil cooler 501, an outlet of the oil cooler 501 is connected to an inlet of the engine cylinder 502, an outlet of the engine cylinder 502 is connected to an inlet of the engine body water outlet pipe 503, and an outlet of the engine body water outlet pipe 503 is connected to an inlet of the collecting pipeline 7. In the working process, the second path of cooling liquid flows through the engine oil cooler 501 and the engine cylinder body 502 in sequence, and cools the engine oil cooler 501 and the engine cylinder body 502.
Optionally, in an embodiment, the body 5 further includes a first water jacket 504, and the first water jacket 504 is disposed on the outer periphery of the exhaust manifold 10 and functions to cool and insulate the exhaust manifold 10. The inlet of the first water jacket pipeline 505 is connected with the outlet of the engine block 502, and the outlet of the first water jacket pipeline 505 is connected with the inlet of the engine body water outlet pipe 503. In the working process, the cooling liquid flowing through the engine cylinder 502 is divided into two parts, and one part directly flows into the engine body water outlet pipe 503; the other part flows into the first water jacket pipeline 505 and then enters the machine body water outlet pipe 503.
Optionally, in an embodiment, the body 5 further includes a second water jacket 506, and the second water jacket 506 is disposed outside the turbocharger 9 and serves as a cooling and heat insulation for the turbocharger 9. The inlet of the second water jacket pipeline 507 is connected with the outlet of the oil cooler 501, and the outlet of the second water jacket pipeline 507 is connected with the inlet of the engine body water outlet pipe 503. During operation, the second coolant flows through the oil cooler 501 and is divided into two parts, one part flows into the second water jacket pipeline 507, and the other part flows into the engine block 502.
Optionally, in an embodiment, the engine cooling system further includes an expansion tank 8, the expansion tank 8 achieves the effects of water replenishing and water storage, the expansion tank 8 is communicated with the collecting pipeline 7 through a water replenishing pipe 801, too much coolant in the pipeline can flow into the expansion tank 8 for storage, and too little coolant in the pipeline can directly absorb the coolant from the expansion tank 8 for replenishment. Meanwhile, the expansion water tank 8 is further provided with a degassing pipe 802 for degassing gas in the pipeline, for example, one end of the degassing pipe 802 may be connected to the expansion water tank 8, and the other end thereof may be connected to the second water jacket pipeline 507; the degassing tube 802 may also be connected to other tubing.
Optionally, in one embodiment, the flow rate of the first outlet of the flow splitter 4 is less than the flow rate of the second outlet of the flow splitter 4. Specifically, only a small part of the whole cooling liquid enters the heat exchanger 2 for cooling, the temperature of the part of the cooling liquid can be reduced to be lower, and the cooling effect of the intercooler 3 on the engine intake air is further optimized.
Optionally, in one embodiment, the ratio of the flow rate of the first outlet of the splitter 4 to the flow rate of the second outlet of the splitter 4 is 1: 2.
As can be seen from the foregoing embodiments, the engine cooling system provided by the present application has the following beneficial effects:
the engine cooling system divides the cooling liquid into two parts, wherein one part of the cooling liquid passes through the external heat exchanger 2 to obtain the cooling liquid with lower temperature, and meanwhile, the part of the cooling liquid is used as the cooling liquid of the intercooler 3, so that the lower intercooling intake air temperature can be obtained. The coolant after passing through the intercooler 3 is mixed with the engine coolant, and the purpose of cooling the engine coolant is also achieved. The lower after-intercooling inlet air temperature increases the air inlet amount of the engine, reduces the smoke intensity of the engine, simultaneously reduces the discharge amount of NOx and can meet the requirements of higher discharge regulations. Meanwhile, the lower air inlet temperature also improves the fuel economy to a certain extent.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The engine cooling system provided by the present application is described in detail above. The principles and embodiments of the present application are explained herein using specific examples, which are provided only to help understand the method and the core idea of the present application. It should be noted that, for those skilled in the art, it is possible to make several improvements and modifications to the present application without departing from the principle of the present application, and such improvements and modifications also fall within the scope of the claims of the present application.
Claims (8)
1. An engine cooling system is characterized by comprising a thermostat (1), a heat exchanger (2), an intercooler (3), a flow divider (4), a machine body (5) and a driving pump (6) for driving cooling liquid to flow; a first outlet of the thermostat (1) is connected with an inlet of the heat exchanger (2) through a first pipeline (101), an outlet of the heat exchanger (2) is connected with an inlet of the intercooler (3), a second outlet of the thermostat (1) is connected with an inlet of the intercooler (3) through a bypass pipeline (102), and the on-off state of the first pipeline (101) and the bypass pipeline (102) is controlled by the thermostat (1); shunt (4) are equipped with import, first export and second export, the first export of shunt (4) with the access connection of thermostat (1), the second export of shunt (4) with the access connection of organism (5), the export of organism (5) with the export of intercooler (3) respectively through converging pipeline (7) with the access connection of shunt (4).
2. Engine cooling system according to claim 1, characterized in that the machine body (5) comprises an oil cooler (501), an engine block (502) and a machine body outlet pipe (503), the second outlet of the flow divider (4) is connected with the inlet of the oil cooler (501), the outlet of the oil cooler (501) is connected with the inlet of the engine block (502), the outlet of the engine block (502) is connected with the inlet of the machine body outlet pipe (503), and the outlet of the machine body outlet pipe (503) is connected with the inlet of the collecting pipe (7).
3. Engine cooling system according to claim 2, characterized in that the engine block (5) further comprises a first water jacket (504) for cooling and insulating the exhaust manifold (10), the inlet of the first water jacket pipe (505) being connected to the outlet of the engine block (502), the outlet of the first water jacket pipe (505) being connected to the inlet of the engine block outlet pipe (503).
4. Engine cooling system according to claim 2, characterized in that the engine block (5) further comprises a second water jacket (506) for cooling and insulating the turbocharger (9), the inlet of the second water jacket pipeline (507) is connected with the outlet of the oil cooler (501), and the outlet of the second water jacket pipeline (507) is connected with the inlet of the engine block water outlet pipe (503).
5. Engine cooling system according to claim 4, characterized by further comprising an expansion tank (8), the expansion tank (8) being in communication with the junction line (7) through a water replenishment pipe (801), a deaeration pipe (802) being provided between the expansion tank (8) and the second water jacket line (507).
6. Engine cooling system according to any one of claims 1 to 5, characterized in that the flow rate of the first outlet of the flow divider (4) is less than the flow rate of the second outlet of the flow divider (4).
7. Engine cooling system according to claim 6, characterized in that the ratio of the flow of the first outlet of the flow divider (4) to the flow of the second outlet of the flow divider (4) is 1: 2.
8. Engine cooling system according to claim 7, characterized in that the drive pump (6) is provided in the collecting line (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022736352.7U CN214035861U (en) | 2020-11-23 | 2020-11-23 | Engine cooling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022736352.7U CN214035861U (en) | 2020-11-23 | 2020-11-23 | Engine cooling system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214035861U true CN214035861U (en) | 2021-08-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022736352.7U Active CN214035861U (en) | 2020-11-23 | 2020-11-23 | Engine cooling system |
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| Country | Link |
|---|---|
| CN (1) | CN214035861U (en) |
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- 2020-11-23 CN CN202022736352.7U patent/CN214035861U/en active Active
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