CN108643998B - Engine heat management system - Google Patents
Engine heat management system Download PDFInfo
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- CN108643998B CN108643998B CN201810354247.1A CN201810354247A CN108643998B CN 108643998 B CN108643998 B CN 108643998B CN 201810354247 A CN201810354247 A CN 201810354247A CN 108643998 B CN108643998 B CN 108643998B
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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
- F01P3/02—Arrangements for cooling cylinders or cylinder heads
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M5/00—Heating, cooling, or controlling temperature of lubricant; Lubrication means facilitating engine starting
- F01M5/02—Conditioning lubricant for aiding engine starting, e.g. heating
- F01M5/021—Conditioning lubricant for aiding engine starting, e.g. heating by heating
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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
- F01P7/00—Controlling of coolant flow
- F01P7/14—Controlling of coolant flow the coolant being liquid
- F01P7/16—Controlling of coolant flow the coolant being liquid by thermostatic control
- F01P7/165—Controlling of coolant flow the coolant being liquid by thermostatic control characterised by systems with two or more loops
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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
- F01P3/02—Arrangements for cooling cylinders or cylinder heads
- F01P2003/027—Cooling cylinders and cylinder heads in parallel
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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
- F01P3/02—Arrangements for cooling cylinders or cylinder heads
- F01P2003/028—Cooling cylinders and cylinder heads in series
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Lubrication Of Internal Combustion Engines (AREA)
Abstract
The invention provides an engine thermal management system, and relates to the technical field of vehicle engines. An engine thermal management system includes a first recirculating cooling loop and a second recirculating cooling loop. The first circulating cooling loop comprises a mechanical water pump, a cylinder valve, a cylinder water jacket and a cylinder cover water jacket which are connected in series through pipelines, wherein the mechanical water pump is also directly connected with the cylinder cover water jacket through the pipelines in front of the cylinder valve, and the second circulating cooling loop comprises a thermostat and a radiator which are sequentially connected in series behind the cylinder cover water jacket through the pipelines. The engine heat management system disclosed by the invention is high in integration and reasonable in arrangement, and the exhaust manifold integrating the separated cooling and the cylinder cover can realize the rapid temperature rise of the engine, heat the engine oil in the warming-up stage, reduce the friction, meet the requirement of heating the whole vehicle, cool the engine oil, the supercharger and the combustion high-temperature area of the cylinder body and the cylinder cover at high temperature, greatly improve the performance of the engine, reduce the oil consumption of the engine and optimize the emission of the engine.
Description
Technical Field
The invention relates to the technical field of vehicle engines, in particular to an engine thermal management system.
Background
With the continuous and intensive research on vehicle technologies, the performance requirements on vehicle engines are continuously increased, and the thermal load of the engines is also higher and higher. The heat management system can manage the engine to work at the optimal temperature, not only can greatly reduce mechanical wear, but also can prolong the service life of the engine, and simultaneously can achieve the purpose of saving fuel, so that the heat management system plays an important role in the normal operation of the engine. Typically, conventional thermal management systems are single cooling circuits, making it difficult for conventional thermal management systems to meet engine dynamics, economy, and emissions requirements. Traditional thermal management system cools off cylinder body and cylinder cap simultaneously, and the warm-up effect is poor. In addition, in the warm-up stage, the heat transfer effect to the oil cooler is poor, the temperature rise is slow, and the friction loss is large.
Disclosure of Invention
The invention aims to provide an engine thermal management system which can realize quick warm-up by separately cooling a cylinder body water jacket and a cylinder cover water jacket.
In particular, the present invention provides an engine thermal management system comprising:
the first circulating cooling loop comprises a mechanical water pump, a cylinder valve, a cylinder water jacket and a cylinder cover water jacket which are connected in series through pipelines, wherein the mechanical water pump is directly connected with the cylinder cover water jacket through the pipelines in front of the cylinder valve, when the temperature of cooling liquid is lower than a first preset temperature, the cylinder valve is closed, the cooling liquid pumped out of the mechanical water pump directly enters the cylinder cover water jacket and circulates back to the mechanical water pump, when the temperature of the cooling liquid is between the first preset temperature and a second preset temperature, the cylinder valve is opened, part of the cooling liquid enters the cylinder cover water jacket and circulates back to the mechanical water pump, and part of the cooling liquid enters the cylinder water jacket and then flows through the cylinder cover water jacket and then circulates back to the mechanical water pump; and
and the second circulating cooling loop comprises a thermostat and a radiator which are sequentially connected in series behind the cylinder cover water jacket through pipelines, the radiator is also connected with the water inlet end of the mechanical water pump, when the temperature of the coolant is higher than the second preset temperature, the thermostat is opened, part of the coolant pumped out from the mechanical water pump enters the thermostat through the cylinder cover water jacket, and flows through the radiator to return to the mechanical water pump after heat exchange.
Optionally, the oil cooler branch comprises an oil cooler connected between the block water jacket and the mechanical water pump through a pipeline, and part of the coolant flowing out of the block water jacket is recirculated back to the mechanical water pump through the oil cooler.
Optionally, the method further comprises:
and the warm air branch comprises a warm air device, the warm air device is connected between the cylinder water jacket and the mechanical water pump through a pipeline, and part of the cooling liquid flowing out of the cylinder water jacket flows through the warm air device and is recycled to the mechanical water pump.
Optionally, the method further comprises:
the liquid supplementing kettle branch comprises a liquid supplementing kettle, the liquid supplementing kettle is connected with the thermostat through a pipeline, a one-way valve is arranged at the highest point of the thermostat, when gas is generated in the thermal management system, the one-way valve is opened, the gas enters the liquid supplementing kettle from the one-way valve through the pipeline, and the liquid supplementing kettle is connected with the mechanical water pump through a liquid supplementing pipe to supplement the cooling liquid for the mechanical water pump.
Optionally, the method further comprises:
the supercharger branch comprises a supercharger, the supercharger is connected between a water outlet pipe of the mechanical water pump and the liquid supplementing pipe through a pipeline, the part of the cooling liquid flowing out of the water outlet pipe of the mechanical water pump flows into the liquid supplementing pipe after flowing through the supercharger, and then the cooling liquid is circulated back to the mechanical water pump.
Optionally, the method further comprises:
the small circulation bypass branch is connected with the water outlet pipe at the thermostat and the water inlet pipe of the mechanical water pump through a pipeline, the small circulation bypass branch is constructed to be communicated when the temperature of the cooling liquid is smaller than or equal to the second preset temperature, and the small circulation bypass branch is closed when the temperature of the cooling liquid is larger than the second preset temperature.
Optionally, the first preset temperature is lower than the second preset temperature.
Optionally, the method further comprises:
and the exhaust branch is communicated with the water inlet pipe of the radiator and the water inlet pipe of the liquid supplementing kettle through a pipeline, and when the second circulating cooling loop circulates and gas exists in the pipeline between the thermostat and the radiator, the gas is exhausted into the liquid supplementing kettle through the exhaust branch.
Alternatively,
the cylinder cover water jacket comprises a cylinder cover upper water jacket and a cylinder cover lower water jacket which are mutually independent, and the cylinder cover water jacket is constructed into: and the cooling liquid entering the cylinder cover water jacket partially enters the cylinder cover upper water jacket and partially enters the cylinder cover lower water jacket, and the cylinder cover upper water jacket and the cylinder cover lower water jacket are converged at a water outlet and then flow out.
Optionally, the cylinder head water jacket is located outside the cylinder head, the cylinder head and the exhaust manifold are integrally arranged, and the cylinder head water jacket cools the cylinder head and also cools the exhaust manifold.
The engine heat management system disclosed by the invention is high in integration and reasonable in arrangement, and the exhaust manifold integrating the separated cooling and the cylinder cover can realize the rapid temperature rise of the engine, heat the engine oil in the warming-up stage, reduce the friction, meet the requirement of heating the whole vehicle, cool the engine oil, the supercharger and the combustion high-temperature area of the cylinder body and the cylinder cover at high temperature, greatly improve the performance of the engine, reduce the oil consumption of the engine and optimize the emission of the engine.
Furthermore, when the temperature of the cooling liquid is not higher than the first preset temperature, the cooling liquid does not flow through the cylinder body water jacket, so that the cylinder body can reach the ideal operation temperature as soon as possible, the friction is reduced, the performance of the engine is improved, and the oil consumption and the emission are reduced. When the temperature of the cooling liquid is higher than a first preset temperature, the cylinder body valve is opened, and part of the cooling liquid enters the cylinder body cooling cylinder barrel to avoid overheating. According to the invention, the cylinder body valve is designed, and the cylinder body water jacket and the cylinder cover water jacket are cooled in a separated mode, so that the quick warming-up can be realized, and meanwhile, the work of each small circulation pipeline is ensured.
Further, in a small-cycle temperature rise stage after the engine is started, heat exchange exists between the engine oil and the cooling liquid, and since the rising speed of the water temperature of the engine is higher than that of the engine oil, the cooling liquid in the initial stage is transferred to the engine oil through the engine oil cooler, the temperature rise of the engine oil of the whole engine is accelerated, the friction loss is reduced, the performance of the engine is improved, the oil consumption of the engine is reduced, and the emission of the engine is optimized.
Furthermore, the small-circulation bypass branch is controlled by the thermostat, and mainly plays a role in reducing the pressure of the whole pipeline system and reducing the pressure loss of the system.
Furthermore, an exhaust manifold is integrated on the cylinder cover, and the water jacket of the cylinder cover cools the exhaust side, so that the engine can be rapidly heated, the exhaust temperature can be reduced, and the performance of the engine is optimized.
The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.
Drawings
Some specific embodiments of the invention will be described in detail hereinafter, by way of illustration and not limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:
FIG. 1 is a schematic diagram of an engine thermal management system according to one embodiment of the present invention.
Detailed Description
FIG. 1 is a schematic diagram of an engine thermal management system 100 according to one embodiment of the present invention. The engine thermal management system 100 of the present embodiment may generally include a first recirculating cooling loop 10 and a second recirculating cooling loop 20. The first circulation cooling circuit 10 may include a mechanical water pump 11, a cylinder valve 12, a cylinder jacket 13, and a cylinder jacket 14 connected in series by a pipeline, wherein the mechanical water pump 11 may also be directly connected to the cylinder jacket 14 by a pipeline before the cylinder valve 12, so that when the temperature of the coolant is lower than a first preset temperature, the cylinder valve 12 is closed, and the coolant pumped from the mechanical water pump 11 directly enters the cylinder jacket 14 and circulates back to the mechanical water pump 11. When the temperature of the coolant is between the first preset temperature and the second preset temperature, the cylinder valve 12 is opened, part of the coolant enters the cylinder head water jacket 14 and circulates back to the mechanical water pump 11, and part of the coolant enters the cylinder head water jacket 13, flows through the cylinder head water jacket 14 and circulates back to the mechanical water pump 11. The second circulation cooling loop 20 may include a thermostat 21 and a radiator 22 serially connected to the cylinder head water jacket 14 in sequence, and the radiator 22 is further connected to the water inlet end of the mechanical water pump 11, so that when the temperature of the coolant is higher than a second preset temperature, the thermostat 21 is turned on, and after part of the coolant pumped from the mechanical water pump 11 enters the thermostat 21 through the cylinder head water jacket 14, the coolant flows through the radiator 22 for heat exchange and then returns to the mechanical water pump 11.
In this embodiment, when the temperature of the coolant is not higher than the first preset temperature, the coolant does not flow through the cylinder jacket 13, so that the cylinder can reach an ideal operating temperature as soon as possible, friction is reduced, engine performance is improved, and oil consumption and emission are reduced. When the temperature of the cooling liquid is higher than the first preset temperature, the cylinder valve 12 is opened, and part of the cooling liquid enters the cylinder cooling cylinder to avoid overheating. In the embodiment, the cylinder valve 12 is designed to separately cool the cylinder water jacket 13 and the cylinder cover water jacket 14, so that the quick warming-up can be realized, and meanwhile, the work of each small circulation pipeline is ensured.
As a specific embodiment of the present invention, an oil cooler bypass 30 may be further included after the first recirculating cooling loop 10. The oil cooler branch 30 may include an oil cooler 31, and the oil cooler 31 is connected between the block water jacket 13 and the mechanical water pump 11 through a pipeline, so that part of the coolant flowing out of the block water jacket 13 flows through the oil cooler 31 and is recirculated to the mechanical water pump 11. In the small-cycle temperature rise stage after the engine is started, heat exchange exists between the engine oil and the cooling liquid, and because the rising speed of the water temperature of the engine is higher than that of the engine oil, the cooling liquid in the initial stage is transferred to the engine oil through the engine oil cooler 31, so that the temperature rise of the engine oil of the whole engine is accelerated, the friction loss is reduced, the performance of the engine is improved, the oil consumption of the engine is reduced, and the emission of the engine is optimized. In the hot car stage, the coolant is transferred to the engine oil through the engine oil cooler 31, so that the engine oil is rapidly heated, and the friction loss is reduced.
As a specific embodiment of the present invention, a warm air branch 40 may be further included after the first circulative cooling loop 10. The warm air branch 40 includes a warm air device 41, and the warm air device 41 is connected between the cylinder water jacket 13 and the mechanical water pump 11 through a pipeline, so that part of the coolant flowing out of the cylinder water jacket 13 flows through the warm air device 41 and then is recirculated to the mechanical water pump 11.
As a specific embodiment of the present invention, a fluid infusion pot branch 50 may be further included after the first recirculating cooling loop 10, wherein the fluid infusion pot branch 50 may include a fluid infusion pot 51, the fluid infusion pot 51 is connected to the thermostat 21 through a pipeline, and a check valve 23 may be disposed at a highest point of the thermostat 21, so that when gas is generated in the thermal management system, the check valve 23 is opened to allow the gas to enter the fluid infusion pot 51 from the check valve 23 through the pipeline. The liquid supplementing kettle 51 is connected with the mechanical water pump 11 through a liquid supplementing pipe and is used for supplementing cooling liquid for the mechanical water pump 11. During the circulation of the cooling liquid, the cooling liquid is heated and part of the cooling liquid is vaporized to form gas. In particular, when the coolant is water, water vapor is easily formed. Water vapor, if present in the thermal management system at all times, is likely to affect the cooling effectiveness of the thermal management system. Meanwhile, due to the fact that the volume of the gas is large, a high-pressure state is easy to form, and the pipeline has great potential safety hazards. Thus, by providing a one-way valve 23 at the highest point of the thermostat 21, the gas will reach the highest point of the thermostat 21 directly as it follows the coolant to the thermostat 21, since the gas is in the system above the coolant. When gas is detected at the highest point of the thermostat 21, the check valve 23 is opened, so that the gas reaches the liquid replenishing pot 51 through a pipeline. The check valve 23 may be opened automatically or manually. When the check valve 23 is an automatic opening valve, a gas sensor may be disposed at the highest point of the thermostat 21 and electrically connected to the check valve 23, and when gas is detected, the check valve 23 is automatically opened, and after the gas is discharged, the check valve 23 is automatically closed. When the check valve 23 is opened manually, a gas sensor can be arranged at the highest point of the thermostat 21, the gas sensor can be connected with a terminal computer or an alarm, and a worker is prompted to manually open the check valve 23 according to information transmitted by the gas sensor. Of course, in actual use, automatic check valve 23 is preferred.
As a specific embodiment of the present invention, a supercharger branch 60 may be further included after the first recirculating cooling loop 10, wherein the supercharger branch 60 may include a supercharger 61, and the supercharger 61 is connected between the water outlet pipe and the fluid replenishing pipe of the mechanical water pump 11 through a pipeline, so that part of the cooling fluid flowing out from the water outlet pipe of the mechanical water pump 11 flows through the supercharger 61, flows into the fluid replenishing pipe, and is recirculated to the mechanical water pump 11.
As a specific embodiment of the present invention, a small circulation bypass branch 70 may be further included after the first circulation cooling loop 10, wherein the small circulation bypass branch 70 is connected to the water outlet pipe of the thermostat 21 and the water inlet pipe of the mechanical water pump 11 through a pipeline. The small circulation bypass branch 70 is configured such that the small circulation bypass branch 70 is circulated when the temperature of the coolant is equal to or lower than a second preset temperature, and the small circulation bypass branch 70 is closed when the temperature of the coolant is higher than the second preset temperature. The small-circulation bypass branch 70 is controlled by the thermostat 21, and mainly plays a role in reducing the pressure of the whole pipeline system and reducing the pressure loss.
As a specific embodiment of the present invention, the first preset temperature is lower than the second preset temperature. Specifically, during actual use, the first preset temperature is 60 ℃ and the second preset temperature is 94 ℃.
As a specific embodiment of the present invention, the second recirculating cooling loop 20 further includes a bleed branch 80. The exhaust branch 80 connects the water inlet pipe of the heat sink 22 and the water inlet pipe of the fluid infusion pot 51 through a pipeline, and when the second circulation cooling loop 20 circulates and gas exists in the pipeline between the thermostat 21 and the heat sink 22, the gas is exhausted into the fluid infusion pot 51 through the exhaust branch 80. Since the temperature of the coolant in the second recirculating cooling loop 20 is higher when the second recirculating cooling loop 20 is opened, gas is more likely to form in the second recirculating cooling loop 20, and therefore, it is necessary to continuously exhaust the gas through the exhaust branch 80 so as not to affect the piping of the second recirculating cooling loop 20. When gas enters the liquid supplementing pot 51, the gas is stored at the upper part of the liquid supplementing pot 51, and the liquid in the liquid supplementing pot 51 gradually descends to supplement cooling liquid for the system. When the liquid in the liquid replenishing pot 51 decreases to a certain extent, the liquid replenishing pot 51 is opened to replenish the cooling liquid.
Specifically, when the temperature of the coolant is higher than the second preset temperature, i.e., higher than 94 ℃, the thermostat 21 opens the second recirculating cooling loop 20 and closes the small recirculating bypass branch 70. At this time, the cooling liquid enters the radiator 22 through the second circulating cooling circuit 20, completes heat exchange in the radiator 22, and enters the mechanical water pump 11 through the water inlet pipe of the water pump to be circulated again. In the circulation process, the small circulation bypass branch 70 is closed, and the supercharger branch 60, the engine oil cooler branch 30, the air heater branch 40, the fluid infusion pot branch 50 and the exhaust branch 80 normally operate.
Specifically, in one specific embodiment, the head water jacket 14 includes a head upper water jacket 142 and a head lower water jacket 141 that are independent of each other, and the head water jacket 14 is configured to: the coolant entering the cylinder head water jacket 14 partially enters the cylinder head upper water jacket 142, partially enters the cylinder head lower water jacket 141, and merges at the water outlets of the cylinder head upper water jacket 142 and the cylinder head lower water jacket 141 to flow out.
Specifically, in one particular embodiment, the head jacket is located outside the head, which is integrated with the exhaust manifold so that the head jacket cools the exhaust manifold as well as cools the head. The cylinder cover integrates an exhaust manifold, and the cylinder cover water jacket cools the exhaust side, so that the engine can be quickly heated, the exhaust temperature can be reduced, and the performance of the engine is optimized.
The engine heat management system 100 of this embodiment integrates highly, arranges rationally, and the integrated exhaust manifold of disconnect-type cooling, cylinder cap can realize that the engine heaies up fast, and warm-up stage heating machine oil reduces the friction, satisfies whole car heating, and high temperature cooling machine oil, booster 61, cylinder body cylinder cap burning high temperature region have greatly promoted the performance of engine, have reduced engine oil consumption, have optimized the engine and have discharged.
Thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been illustrated and described in detail herein, many other variations or modifications consistent with the principles of the invention may be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the invention. Accordingly, the scope of the invention should be understood and interpreted to cover all such other variations or modifications.
Claims (8)
1. An engine thermal management system, comprising:
the first circulating cooling loop comprises a mechanical water pump, a cylinder valve, a cylinder water jacket and a cylinder cover water jacket which are connected in series through pipelines, wherein the mechanical water pump is directly connected with the cylinder cover water jacket through the pipelines in front of the cylinder valve, when the temperature of cooling liquid is lower than a first preset temperature, the cylinder valve is closed, the cooling liquid pumped out of the mechanical water pump directly enters the cylinder cover water jacket and circulates back to the mechanical water pump, when the temperature of the cooling liquid is between the first preset temperature and a second preset temperature, the cylinder valve is opened, part of the cooling liquid enters the cylinder cover water jacket and circulates back to the mechanical water pump, and part of the cooling liquid enters the cylinder water jacket and then flows through the cylinder cover water jacket and then circulates back to the mechanical water pump; and
the second circulating cooling loop comprises a thermostat and a radiator which are sequentially connected in series behind the cylinder cover water jacket through pipelines, the radiator is also connected with the water inlet end of the mechanical water pump, when the temperature of the cooling liquid is higher than a second preset temperature, the thermostat is opened, part of the cooling liquid pumped out of the mechanical water pump enters the thermostat through the cylinder cover water jacket, and flows through the radiator to return to the mechanical water pump after heat exchange;
an oil cooler branch, including an oil cooler, connected between the cylinder water jacket and the mechanical water pump through a pipeline, wherein part of the coolant flowing out of the cylinder water jacket flows through the oil cooler and is recirculated back to the mechanical water pump;
the small circulation bypass branch is connected with the water outlet pipe at the thermostat and the water inlet pipe of the mechanical water pump through a pipeline, the small circulation bypass branch is constructed to be communicated when the temperature of the cooling liquid is smaller than or equal to the second preset temperature, and the small circulation bypass branch is closed when the temperature of the cooling liquid is larger than the second preset temperature.
2. The engine thermal management system of claim 1, further comprising:
and the warm air branch comprises a warm air device, the warm air device is connected between the cylinder water jacket and the mechanical water pump through a pipeline, and part of the cooling liquid flowing out of the cylinder water jacket flows through the warm air device and is recycled to the mechanical water pump.
3. The engine thermal management system of claim 2, further comprising:
the liquid supplementing kettle branch comprises a liquid supplementing kettle, the liquid supplementing kettle is connected with the thermostat through a pipeline, a one-way valve is arranged at the highest point of the thermostat, when gas is generated in the thermal management system, the one-way valve is opened, the gas enters the liquid supplementing kettle from the one-way valve through the pipeline, and the liquid supplementing kettle is connected with the mechanical water pump through a liquid supplementing pipe to supplement the cooling liquid for the mechanical water pump.
4. The engine thermal management system of claim 3, further comprising:
the supercharger branch comprises a supercharger, the supercharger is connected between a water outlet pipe of the mechanical water pump and the liquid supplementing pipe through a pipeline, the part of the cooling liquid flowing out of the water outlet pipe of the mechanical water pump flows into the liquid supplementing pipe after flowing through the supercharger, and then the cooling liquid is circulated back to the mechanical water pump.
5. The engine thermal management system of claim 4,
the first preset temperature is less than the second preset temperature.
6. The engine thermal management system of claim 4, further comprising:
and the exhaust branch is communicated with the water inlet pipe of the radiator and the water inlet pipe of the liquid supplementing kettle through a pipeline, and when the second circulating cooling loop circulates and gas exists in the pipeline between the thermostat and the radiator, the gas is exhausted into the liquid supplementing kettle through the exhaust branch.
7. The engine thermal management system of claim 1,
the cylinder cover water jacket comprises a cylinder cover upper water jacket and a cylinder cover lower water jacket which are mutually independent, and the cylinder cover water jacket is constructed into: and the cooling liquid entering the cylinder cover water jacket partially enters the cylinder cover upper water jacket and partially enters the cylinder cover lower water jacket, and the cylinder cover upper water jacket and the cylinder cover lower water jacket are converged at a water outlet and then flow out.
8. The engine thermal management system of claim 7,
the cylinder cover water jacket is located outside the cylinder cover, the cylinder cover and the exhaust manifold are integrally arranged, and the cylinder cover water jacket cools the cylinder cover and simultaneously cools the exhaust manifold.
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| CN201810354247.1A CN108643998B (en) | 2018-04-19 | 2018-04-19 | Engine heat management system |
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| CN201810354247.1A CN108643998B (en) | 2018-04-19 | 2018-04-19 | Engine heat management system |
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| CN108643998B true CN108643998B (en) | 2020-05-01 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112709624B (en) * | 2019-10-25 | 2022-07-08 | 宁波吉利罗佑发动机零部件有限公司 | Engine thermal management system and method |
| CN111022236B (en) * | 2019-12-26 | 2021-11-19 | 宁波吉利罗佑发动机零部件有限公司 | Engine thermal management system and vehicle |
| 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 |
| CN112539106B (en) * | 2020-12-04 | 2022-03-18 | 北京电子科技职业学院 | Novel diesel engine cooling system |
| CN112943440A (en) * | 2021-01-24 | 2021-06-11 | 南京吉奇图汽车用品有限公司 | Automatic water-oil temperature control device for automobile driving system |
| CN113586224A (en) * | 2021-08-26 | 2021-11-02 | 西安交通大学 | Intelligent cooling system based on engine split cooling and control method thereof |
| CN114233459B (en) * | 2021-11-08 | 2023-03-24 | 潍柴动力股份有限公司 | Engine cooling system and control method |
| CN117002250A (en) * | 2022-04-28 | 2023-11-07 | 比亚迪股份有限公司 | Thermal management system and vehicle with same |
| CN114893283A (en) * | 2022-06-07 | 2022-08-12 | 哈尔滨东安汽车动力股份有限公司 | Supercharged engine cooling system |
| CN115324708A (en) * | 2022-07-08 | 2022-11-11 | 东风汽车集团股份有限公司 | Connecting bracket for engine cylinder body and electric water pump and vehicle |
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| CN103527303A (en) * | 2012-06-29 | 2014-01-22 | 通用汽车环球科技运作有限责任公司 | Powertrain cooling system with cooling flow modes |
| CN105298613A (en) * | 2015-08-07 | 2016-02-03 | 宁波吉利罗佑发动机零部件有限公司 | Double-loop cooling system and method for engine |
| CN106703966A (en) * | 2015-09-11 | 2017-05-24 | 北汽福田汽车股份有限公司 | Engine cooling system and vehicle provided with same |
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| CN108643998A (en) | 2018-10-12 |
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