CN116291840A - Water-cooled engine - Google Patents
Water-cooled engine Download PDFInfo
- Publication number
- CN116291840A CN116291840A CN202211734111.6A CN202211734111A CN116291840A CN 116291840 A CN116291840 A CN 116291840A CN 202211734111 A CN202211734111 A CN 202211734111A CN 116291840 A CN116291840 A CN 116291840A
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- water
- cooling
- radiator
- thermostat
- engine
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P3/00—Liquid cooling
- F01P3/20—Cooling circuits not specific to a single part of engine or machine
-
- 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)
- Lubrication Of Internal Combustion Engines (AREA)
Abstract
The invention discloses a water-cooled engine, which comprises an engine body and a water cooling system, wherein the water cooling system comprises a cooling water pump, a cooling channel, a thermostat, a radiator and an oil-water heat exchanger; the cooling water pump sends cooling medium to a cooling channel of the engine body, an outlet of the cooling channel is communicated with the thermostat, part of the cooling medium entering the thermostat enters the radiator, the other part of the cooling medium enters the oil-water heat exchanger, and the cooling medium flows out from a water outlet of the radiator and a water outlet of the oil-water heat exchanger and flows back to the cooling water pump after being converged; according to the invention, the connection mode between the engine waterways is designed, so that the circulation distance between the engine body and the radiator as well as between the engine waterways and between the engine body and the oil-water heat exchanger is shortened, the circulation resistance of the pipeline is reduced, and the heat dissipation efficiency is improved.
Description
Technical Field
The invention belongs to the technical field of engines, and relates to a water-cooled engine.
Background
In existing motorcycle engines, in particular four-cylinder engines, the cooling lines thereof are generally arranged in two ways:
the first is that the water inlet of the engine is arranged at the front end of the cylinder block water cooling jacket, namely the exhaust side of the engine, the water outlet is arranged at the rear end of the cylinder head water cooling jacket, namely the air inlet side of the engine, the water outlet is connected with the water inlet of the radiator in front of the engine by a water pipe, the arrangement mode is long in connection distance, and long water pipes are needed for connection; the pipeline distance is far away, and the connecting water pipe size is long, and the resistance increases, and cooling efficiency reduces, and the water pipe that gets into the radiator is passed through from engine head lid upside in addition, or is passed through from engine cylinder head water jacket or cylinder body water jacket right side, causes engine overall dimension to increase, and the structure is not compact, occupies more whole car space. The second is that the water inlet of the engine is arranged at the front end of the cylinder body water cooling sleeve, namely the exhaust side of the engine, cooling water reaches the water outlet at the rear end of the cylinder body water cooling sleeve through the water jacket inside the cylinder body water cooling sleeve, namely the air inlet side of the engine, the water outlet is connected with the water inlet of the water pump through a water pipe, the water outlet of the water pump is connected with the water inlet of the cylinder head water cooling sleeve through another water pipe, and the cooling water enters the front side of the cylinder body water cooling sleeve again through a built-in water channel between the cylinder head water cooling sleeve and the cylinder body water cooling sleeve and is connected with the radiator through the water outlet at the front side; the cooling water from the cylinder body water cooling jacket to the cylinder head water cooling jacket in the arrangement mode needs to pass through the water inlet pipe and the water outlet pipe of the water pump at the same time, so that the number of the water pipes is increased. The engine pipeline shape is enlarged, more whole vehicle space is occupied, the waterway resistance is increased, and the cooling efficiency is reduced.
In order to solve the above problems, a water-cooled engine is needed, the circulation distance of the waterway and the number of water pipes are reduced by changing the connection mode between waterways of the engine, the circulation resistance of the pipeline is reduced, and the heat dissipation efficiency is improved.
Disclosure of Invention
In view of the above, the present invention provides a water-cooled engine, by changing the connection manner between engine waterways, so that the circulation distance between the engine body and the radiator as well as between the engine body and the oil-water heat exchanger is shortened, the number of water pipes is reduced, the circulation resistance of the pipeline is reduced, and the heat dissipation efficiency is improved.
The water-cooled engine comprises an engine body and a water cooling system, wherein the water cooling system comprises a cooling water pump, a cooling channel arranged on the engine body, a thermostat, a radiator and an oil-water heat exchanger; the cooling water pump sends cooling medium to the cooling channel of the engine body, the outlet of the cooling channel is communicated with the thermostat, part of the cooling medium entering the thermostat enters the radiator, the other part enters the oil-water heat exchanger, and the cooling medium flows out from the water outlet of the radiator and the water outlet of the oil-water heat exchanger and flows back to the cooling water pump after being converged. The connection mode of the components of the water cooling system is improved, so that the cooling medium forms two paths of circulation, one path of cooling medium enters the engine body through the cooling water pump, then enters the thermostat and the radiator from the engine body in sequence, and finally returns to the cooling water pump; the other path is that the cooling water enters the engine body through the cooling water pump, then enters the thermostat and the oil-water heat exchanger through the engine body in sequence, and finally returns to the cooling water pump.
Further, the engine body comprises a cylinder head and a cylinder body, the engine body is provided with a water inlet and a water outlet, the water inlet is arranged on the cylinder head and is positioned on the air inlet side of the engine body, the water outlet is arranged on the cylinder body and is positioned on the air exhaust side of the engine body, the thermostat is arranged at the position of the water outlet, and a cooling medium enters the cooling channel from the water inlet and leaves the cooling channel from the water outlet to enter the thermostat. The water outlet is arranged on the exhaust side, so that the water outlet can be communicated with the radiator in a short distance, and the circulation distance of the waterway is greatly shortened.
Further, the cooling water pump is arranged on the air inlet side of the engine body and is positioned at the lower part of the engine body, the cooling water pump is provided with a water pump water inlet pipe and a water pump water outlet pipe, the water pump water outlet pipe is communicated with the water inlet, the water pump water inlet pipe is communicated with the radiator and the oil-water heat exchanger, and cooling medium flowing out of the radiator and the oil-water heat exchanger flows into the water pump water inlet pipe after converging. The cooling water pump is arranged on the air inlet side, so that the circulation distance from the cooling water pump to the water inlet is effectively shortened.
Further, the flow distribution ratio of the cooling medium flowing into the radiator to the cooling medium flowing into the oil-water heat exchanger is set to 4:1 to 3:2. that is, the cooling medium flowing into the radiator accounts for 3/5 to 4/5 of the total amount of the cooling medium, the cooling medium flowing into the oil-water heat exchanger accounts for 1/5 to 2/5 of the total amount of the cooling medium, only a small part of the cooling medium enters the oil-water heat exchanger to exchange heat, and the rest of the cooling medium needs to enter the radiator to dissipate heat.
Further, the cooling channel comprises a cylinder head cooling channel and a cylinder body cooling channel, the cylinder head cooling channel is arranged on the cylinder head and is communicated with the water inlet, the cylinder body cooling channel is arranged on the cylinder body and is communicated with the water outlet, the cylinder head cooling channel is communicated with the cylinder body cooling channel, cooling medium flows into the cylinder head cooling channel through the water inlet and cools the cylinder head of the engine body, then flows into the cylinder body cooling channel through the cylinder head cooling channel to cool the cylinder body of the engine body, and the cooling medium flows out of the thermostat through the water outlet after cooling the cylinder body water jacket.
Further, the thermostat comprises a thermostat body and a thermostat cover, the radiator is provided with a radiator water inlet pipe and a radiator water outlet pipe, the radiator water inlet pipe is communicated with the thermostat cover, the radiator water outlet pipe is communicated with the water pump water inlet pipe, cooling medium flowing out from the water outlet flows into the thermostat body, and after the cooling medium flowing into the thermostat body partially flows into the thermostat cover, the cooling medium flows into the radiator water inlet pipe through the thermostat cover.
Further, the oil-water heat exchanger is provided with an oil-water heat exchanger water inlet pipe and an oil-water heat exchanger water outlet pipe, the oil-water heat exchanger water inlet pipe is connected with the thermostat body, the oil-water heat exchanger water outlet pipe is communicated with the water pump water inlet pipe, and the other part of cooling medium flowing into the thermostat body directly flows out of the thermostat body to the oil-water heat exchanger water inlet pipe.
Further, a sealing gasket is arranged at the joint surface of the cylinder head and the cylinder body, a water through hole is formed in the sealing gasket, and cooling medium in the cylinder head cooling channel enters the cylinder body cooling channel through the water through hole. The sealing gasket is arranged, so that the sealing performance of the engine body is improved; meanwhile, the water through holes are formed in the sealing gasket, so that the arrangement of the sealing gasket can not influence the flow of cooling medium in the engine body.
Further, the radiator is arranged on the front side of the engine body, and the oil-water heat exchanger is arranged on the front side of the engine body and is positioned between the radiator and the cooling water pump. It should be noted that, the front side is the exhaust side of the engine, and the radiator is disposed at the front side of the engine body, so that the cooling medium from the engine body can directly enter the radiator, and the pipeline distance is shortened. The cooling medium in the radiator and the cooling medium in the oil-water heat exchanger flow back to the cooling water pump together after converging, and the oil-water heat exchanger is arranged at the position between the radiator and the cooling water pump in order to make the two converge earlier and also consider the position of the oil path.
The invention has the beneficial effects that:
the invention discloses a water-cooled engine, which is characterized in that the circulation distance between an engine body and a radiator as well as between an oil-water heat exchanger is shortened by changing the connection mode between waterways of the engine, so that the circulation resistance of a pipeline is reduced, and the heat dissipation efficiency is improved; the invention reduces the number of water pipes, improves the compactness of the engine, ensures that the appearance of the engine is more concise, and effectively saves the whole occupied space of the engine.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a front view of the present invention;
FIG. 3 is a schematic flow diagram of a cooling medium according to the present invention;
FIG. 4 is a schematic view of the gasket of the present invention.
Detailed Description
The figure is a schematic structural diagram of the invention; FIG. 2 is a front view of the present invention; FIG. 3 is a schematic flow diagram of a cooling medium according to the present invention; FIG. 4 is a schematic view of the gasket of the present invention. It should be noted that, in the description of the present specification, the terms "upper," "lower," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, merely to facilitate description of the present invention and simplify the description, and do not indicate or imply that the devices or elements being referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
As shown in the figure, the water-cooled engine comprises an engine body and a water cooling system, wherein the water cooling system comprises a cooling water pump 5, a cooling channel arranged on the engine body, a thermostat, a radiator 3 and an oil-water heat exchanger 4; the cooling water pump 5 sends cooling medium to the cooling channel of the engine body, the outlet of the cooling channel is communicated with the thermostat, part of the cooling medium entering the thermostat enters the radiator 3, the other part enters the oil-water heat exchanger 4, and the cooling medium flows out from the water outlet 7 of the radiator 3 and the water outlet 7 of the oil-water heat exchanger 4 and flows back to the cooling water pump 5 after being converged. By improving the connection mode of each part of the water cooling system, the cooling medium forms two paths of circulation as shown in fig. 3, one path of cooling medium enters the engine body through the cooling water pump 5, then enters the thermostat and the radiator 3 from the engine body in sequence, and finally returns to the cooling water pump 5; the other path is that the cooling water enters the engine body through the cooling water pump 5, then enters the thermostat and the oil-water heat exchanger 4 from the engine body in sequence, and finally returns to the cooling water pump 5, so that the circulation distance of the cooling medium of the engine is obviously shortened, the circulation resistance of a pipeline is reduced, and the heat dissipation efficiency of the water cooling system is improved.
In this embodiment, as shown in fig. 2 and 3, a radiator 3 is provided on the front side of the engine body, and the oil-water heat exchanger 4 is provided on the front side of the engine body at a position between the radiator 3 and the cooling water pump 5. The front side is the side where the exhaust side of the engine is located, and the radiator 3 is disposed on the front side of the engine body, so that the cooling medium from the engine body can directly enter the radiator 3, and the pipeline distance is shortened. Since the cooling medium in the radiator 3 and the cooling medium in the oil-water heat exchanger 4 flow back to the cooling water pump 5 together after the flow is combined, the oil-water heat exchanger 4 is provided at a position between the radiator 3 and the cooling water pump 5 in order to combine the both earlier while taking the position of the oil passage into consideration.
In this embodiment, the engine body includes cylinder head 1 and cylinder body 2, the engine body is provided with water inlet 6 and delivery port 7, water inlet 6 set up in cylinder head 1 and be located the air inlet side of engine body, delivery port 7 set up in cylinder body 2 and be located the exhaust side of engine body, the thermostat is installed in the position department of delivery port 7, and the cooling medium gets into cooling channel by water inlet 6 and gets into by delivery port 7 departure cooling channel entering the thermostat. The water outlet 7 is arranged on the exhaust side, so that the water outlet 7 can be closely communicated with the radiator 3, and the circulation distance of a waterway is greatly shortened. In this embodiment, the water outlet 7 is the outlet of the cooling channel, the water inlet 6 is the inlet of the cooling channel, and the thermostat is directly installed at the position of the water outlet 7, so that the cooling medium can directly enter the thermostat after cooling the engine body, and no separate pipeline is required for connection.
In this embodiment, the cooling water pump 5 is installed on the air inlet side of the engine body and is located at the lower part of the engine body, the cooling water pump 5 is provided with a water pump water inlet pipe 11 and a water pump water outlet pipe 10, the water pump water outlet pipe 10 is communicated with the water inlet 6, the water pump water inlet pipe 11 is communicated with the radiator 3 and the oil-water heat exchanger 4, and cooling media flowing out of the radiator 3 and the oil-water heat exchanger 4 flow into the water pump water inlet pipe 11 after converging. The cooling water pump 5 is arranged on the air inlet side, so that the circulation distance from the cooling water pump 5 to the water inlet 6 is effectively shortened.
In the present embodiment, the flow distribution ratio of the cooling medium entering the radiator 3 to the cooling medium entering the oil-water heat exchanger 4 is set to 7:3, under the proportion, not only can the whole cooling medium be effectively cooled, but also the best cooling effect of the oil-water heat exchanger can be ensured.
In this embodiment, the cooling channel includes cylinder head cooling channel and cylinder body cooling channel, the cylinder head cooling channel set up in cylinder head 1 and with water inlet 6 is linked together, the cylinder body cooling channel set up in cylinder body 2 and with delivery port 7 is linked together, cylinder head cooling channel and cylinder body cooling channel are linked together, and after cooling medium flowed into cylinder head cooling channel and cooled down engine body's cylinder head 1 by water inlet 6, flowed into cylinder body cooling channel in order to cool down engine body's cylinder body 2 by cylinder head cooling channel again, and cooling medium cooled down cylinder body 2 water jacket was followed by delivery port 7 outflow to the thermostat. The joint surface of the cylinder head 1 and the cylinder body 2 of the embodiment is provided with a sealing gasket 16 as shown in fig. 4, the sealing gasket 16 is provided with a water through hole 17, and the cooling medium in the cylinder head cooling channel enters the cylinder body cooling channel through the water through hole 17. The sealing gasket 16 improves the sealing performance of the engine body; meanwhile, the water through holes 17 are formed in the sealing gasket 16, so that the arrangement of the sealing gasket 16 does not influence the flow of cooling medium in the engine body.
In this embodiment, the thermostat includes a thermostat body 8 and a thermostat cover 9, the radiator 3 is provided with a radiator inlet pipe 12 and a radiator outlet pipe 13, the radiator inlet pipe 12 is communicated with the thermostat cover 9, the radiator outlet pipe 13 is communicated with the water pump inlet pipe 11, the cooling medium flowing out from the water outlet 7 flows into the thermostat body 8, and the cooling medium flowing into the thermostat body 8 flows into the thermostat cover 9 and then flows into the radiator inlet pipe 12 from the thermostat cover 9; the oil-water heat exchanger 4 is provided with an oil-water heat exchanger water inlet pipe 14 and an oil-water heat exchanger water outlet pipe 15, the oil-water heat exchanger water inlet pipe 14 is connected with the thermostat body 8, the oil-water heat exchanger water outlet pipe 15 is communicated with the water pump water inlet pipe 11, and the other part of cooling medium flowing into the thermostat body 8 directly flows out of the thermostat body 8 to the oil-water heat exchanger water inlet pipe 14.
According to the water-cooled engine disclosed by the invention, through changing the connection mode of the pipelines, the cooling medium forms two-way circulation, so that the number of water pipes is effectively reduced, the circulation distance between the engine body and the radiator as well as between the engine body and the oil-water heat exchanger is shortened, the circulation resistance of the pipelines is further reduced, and the heat dissipation efficiency is improved; the number of the water pipes is reduced, so that the compactness of the engine is improved, the appearance of the engine is simpler, and the occupied space of the whole engine is effectively saved.
Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present invention, which is intended to be covered by the scope of the claims of the present invention.
Claims (9)
1. A water-cooled engine, characterized in that: the engine comprises an engine body and a water cooling system, wherein the water cooling system comprises a cooling water pump, a cooling channel arranged on the engine body, a thermostat, a radiator and an oil-water heat exchanger; the cooling water pump sends cooling medium to the cooling channel of the engine body, the outlet of the cooling channel is communicated with the thermostat, part of the cooling medium entering the thermostat enters the radiator, the other part enters the oil-water heat exchanger, and the cooling medium flows out from the water outlet of the radiator and the water outlet of the oil-water heat exchanger and flows back to the cooling water pump after being converged.
2. The water-cooled engine of claim 1, wherein: the engine body comprises a cylinder head and a cylinder body, the engine body is provided with a water inlet and a water outlet, the water inlet is arranged on the cylinder head and is positioned on the air inlet side of the engine body, the water outlet is arranged on the cylinder body and is positioned on the air exhaust side of the engine body, the thermostat is arranged at the position of the water outlet, and a cooling medium enters the cooling channel from the water inlet and leaves the cooling channel from the water outlet to enter the thermostat.
3. The water-cooled engine of claim 2, wherein: the cooling water pump is arranged on the air inlet side of the engine body and positioned at the lower part of the engine body, the cooling water pump is provided with a water pump water inlet pipe and a water pump water outlet pipe, the water pump water outlet pipe is communicated with the water inlet, the water pump water inlet pipe is communicated with the radiator and the oil-water heat exchanger, and cooling medium flowing out of the radiator and the oil-water heat exchanger flows into the water pump water inlet pipe after converging.
4. The water-cooled engine of claim 1, wherein: the flow distribution ratio of the cooling medium flowing into the radiator to the cooling medium flowing into the oil-water heat exchanger is between 4:1 to 3:2.
5. a water cooled engine according to claim 3, wherein: the cooling channel comprises a cylinder head cooling channel and a cylinder body cooling channel, the cylinder head cooling channel is arranged on the cylinder head and is communicated with the water inlet, the cylinder body cooling channel is arranged on the cylinder body and is communicated with the water outlet, the cylinder head cooling channel is communicated with the cylinder body cooling channel, cooling medium flows into the cylinder head cooling channel from the water inlet and cools the cylinder head of the engine body, then flows into the cylinder body cooling channel from the cylinder head cooling channel to cool the cylinder body of the engine body, and the cooling medium flows out from the water outlet to the thermostat after cooling the cylinder body water jacket.
6. The water-cooled engine of claim 5, wherein: the thermostat comprises a thermostat body and a thermostat cover, wherein the radiator is provided with a radiator water inlet pipe and a radiator water outlet pipe, the radiator water inlet pipe is communicated with the thermostat cover, the radiator water outlet pipe is communicated with the water pump water inlet pipe, cooling medium flowing out from the water outlet flows into the thermostat body, and the cooling medium flowing into the thermostat body flows into the thermostat cover and then flows into the radiator water inlet pipe from the thermostat cover.
7. The water-cooled engine of claim 6, wherein: the oil-water heat exchanger is provided with an oil-water heat exchanger water inlet pipe and an oil-water heat exchanger water outlet pipe, the oil-water heat exchanger water inlet pipe is connected with the thermostat body, the oil-water heat exchanger water outlet pipe is communicated with the water pump water inlet pipe, and the other part of cooling medium flowing into the thermostat body directly flows out of the thermostat body to the oil-water heat exchanger water inlet pipe.
8. The water-cooled engine of claim 2, wherein: the sealing gasket is arranged at the joint surface of the cylinder head and the cylinder body, a water through hole is formed in the sealing gasket, and a cooling medium in the cylinder head cooling channel enters the cylinder body cooling channel through the water through hole.
9. The water-cooled engine of claim 1, wherein: the radiator is arranged on the front side of the engine body, and the oil-water heat exchanger is arranged on the front side of the engine body and is positioned between the radiator and the cooling water pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211734111.6A CN116291840A (en) | 2022-12-30 | 2022-12-30 | Water-cooled engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211734111.6A CN116291840A (en) | 2022-12-30 | 2022-12-30 | Water-cooled engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116291840A true CN116291840A (en) | 2023-06-23 |
Family
ID=86836701
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211734111.6A Pending CN116291840A (en) | 2022-12-30 | 2022-12-30 | Water-cooled engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116291840A (en) |
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2022
- 2022-12-30 CN CN202211734111.6A patent/CN116291840A/en active Pending
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