CN110966077A - Internal combustion engine cooling system, control method and vehicle - Google Patents
Internal combustion engine cooling system, control method and vehicle Download PDFInfo
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- CN110966077A CN110966077A CN201811141096.8A CN201811141096A CN110966077A CN 110966077 A CN110966077 A CN 110966077A CN 201811141096 A CN201811141096 A CN 201811141096A CN 110966077 A CN110966077 A CN 110966077A
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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
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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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- Combustion & Propulsion (AREA)
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- General Engineering & Computer Science (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
The invention provides an internal combustion engine cooling system, which comprises a water pump and an internal combustion engine cylinder body, wherein an air inlet side water jacket, an exhaust side water jacket, an integrated exhaust manifold water jacket and a cylinder cover main water jacket are arranged on the internal combustion engine cylinder body; the water outlet of the water pump is connected with the exhaust side water jacket, and the cooling liquid is pumped to the exhaust side water jacket through the water pump; the exhaust side water jacket is simultaneously connected with the cylinder cover main water jacket and the integrated exhaust manifold water jacket, and the cylinder cover main water jacket and the integrated exhaust manifold water jacket form two parallel water paths; the cylinder cover main water jacket and the integrated exhaust manifold water jacket are simultaneously connected with the air inlet side water jacket. According to the invention, through the design of the water jackets in different zones, a brand new cooling circulation water path is constructed through the water jackets in different zones, the zone with higher temperature is cooled firstly, and the zone with lower temperature is cooled secondly, so that the uneven shrinkage of each part of the cylinder body can be avoided, the deformation is prevented from being overlarge, the structural stability is improved, and the service life is prolonged.
Description
Technical Field
The invention relates to the technical field of vehicles, in particular to an internal combustion engine cooling system, a control method and a vehicle.
Background
The internal combustion engine is used as a power device of a vehicle, and the proper working temperature of the internal combustion engine is important for ensuring the structural stability and the working reliability of the internal combustion engine.
At present, the temperature of the internal combustion engine is generally controlled by arranging an integral water jacket structure on a cylinder body, and cooling liquid circulating in the water jacket absorbs heat emitted by the cylinder body of the internal combustion engine, so that the temperature of the internal combustion engine is reduced, the phenomenon that a moving part of the internal combustion engine is overheated to damage a normal fit clearance due to high-temperature expansion is prevented, and the high-temperature failure of lubricating oil is avoided.
However, when the internal combustion engine works, the temperature of each part of the cylinder body is not uniform, in the existing cooling system, due to the unreasonable structure of the water jacket, the cooling liquid can directly contact each part of the cylinder body provided with the water jacket under the guiding action of the water jacket, so that the stress of each part of the cylinder body is not uniform, the deformation of the cylinder body is large, the normal work of the internal combustion engine is influenced, and the service life of the internal combustion engine is shortened.
Disclosure of Invention
In view of this, the present invention provides a cooling system, a control method and a vehicle for an internal combustion engine, so as to ensure uniform heat dissipation at various locations of the internal combustion engine, reduce the deformation of the cylinder block, improve the structural stability and prolong the service life.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
the cooling system of the internal combustion engine comprises a water pump and an internal combustion engine cylinder body, wherein an air inlet side water jacket, an exhaust side water jacket, an integrated exhaust manifold water jacket and a cylinder cover main water jacket are arranged on the internal combustion engine cylinder body;
a water outlet of the water pump is connected with the exhaust side water jacket, and coolant is pumped to the exhaust side water jacket through the water pump and is used for cooling the exhaust side of the cylinder body;
the exhaust side water jacket is simultaneously connected with the cylinder cover main water jacket and the integrated exhaust manifold water jacket, the cylinder cover main water jacket and the integrated exhaust manifold water jacket form two parallel water paths, and cooling liquid in the exhaust side water jacket enters the cylinder cover main water jacket and the integrated exhaust manifold water jacket respectively in two paths according to a preset proportion and is used for cooling the cylinder cover and the integrated exhaust manifold respectively;
the cylinder cover main water jacket and the integrated exhaust manifold water jacket are simultaneously connected with the air inlet side water jacket, and cooling liquid in the cylinder cover main water jacket and the integrated exhaust manifold water jacket is converged into the air inlet side water jacket and is used for cooling the air inlet side of the cylinder body.
Further, the cooling system of the internal combustion engine further comprises a control device, an oil cooler, a radiator and a warm air assembly;
the water inlet of the control device is connected with the water outlet of the air inlet side water jacket;
the water outlet of the control device is simultaneously connected with the engine oil cooler, the radiator and the warm air assembly, the engine oil cooler, the radiator and the warm air assembly are arranged in parallel, and cooling liquid is distributed to the engine oil cooler, the radiator and the warm air assembly through the control device, wherein the control device is used for allocating flow and controlling the on-off of a cooling water path.
Further, the cooling system of the internal combustion engine further comprises a water temperature sensor;
the water temperature sensor is arranged at a water outlet of the air inlet side water jacket, the temperature of cooling liquid is monitored through the water temperature sensor, and the control device adjusts the opening and closing state and the flow rate flowing to the engine oil cooler, the radiator and the warm air assembly according to the temperature.
Further, the control device is a single-input multiple-output switching element.
Compared with the prior art, the internal combustion engine cooling system has the following advantages:
according to the internal combustion engine cooling system, the water jacket structure on the cylinder body is designed in a partitioning mode, a brand new cooling circulation water channel is constructed through the water jacket structures of different partitions, the temperature of a region with higher temperature is reduced firstly, the temperature of a region with lower temperature is reduced secondly, uneven shrinkage of each part of the cylinder body can be avoided, excessive deformation is prevented, the main water jacket of the cylinder cover and the integrated exhaust manifold water jacket are arranged into two parallel water channels, cooling liquids with different flows can be conveyed to the cylinder cover and the integrated exhaust manifold part in a targeted mode, and the heat dissipation efficiency is improved.
Another objective of the present invention is to provide a cooling control method for an internal combustion engine, so as to ensure uniform heat dissipation at various locations of the internal combustion engine, reduce the deformation of the cylinder, improve the structural stability and prolong the service life.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a cooling control method for an internal combustion engine, the method comprising:
pumping cooling liquid to an exhaust side water jacket through a water pump for cooling an exhaust side of the cylinder block;
the cooling liquid in the exhaust side water jacket enters the cylinder cover main water jacket and the integrated exhaust manifold water jacket respectively in two ways according to a preset proportion and is used for cooling the cylinder cover and the integrated exhaust manifold respectively;
and the cooling liquid in the cylinder cover main water jacket and the integrated exhaust manifold water jacket is converged into the air inlet side water jacket and is used for cooling the air inlet side of the cylinder body.
Further, the method further comprises:
and the control device is used for allocating flow and controlling the on-off of a cooling water path.
Further, the method further comprises:
monitoring the temperature of the cooling liquid through a water temperature sensor, wherein the water temperature sensor is arranged at a water outlet of the air inlet side water jacket;
the control device adjusts the opening and closing states and the flow rates flowing to the oil cooler, the radiator and the warm air assembly according to the temperature.
Another object of the invention is also to propose a vehicle to guarantee a stable operation of the vehicle power system.
In order to achieve the purpose, the novel technical scheme of the invention is realized as follows:
a vehicle comprising the aforementioned cooling system for an internal combustion engine.
The vehicle and the internal combustion engine cooling system and the control method have the same advantages compared with the prior art, and are not described in detail herein.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic diagram of a cooling system for an internal combustion engine according to an embodiment of the present invention;
FIG. 2-1 is a schematic view of a cylinder head and integrated exhaust manifold water jacket structure according to an embodiment of the present invention;
2-2 are schematic diagrams of intake side and exhaust side water jacket configurations according to embodiments of the present invention;
FIG. 3 is a schematic diagram of a cooling system for an internal combustion engine according to an embodiment of the present invention;
FIG. 4 is a flowchart of a method for controlling cooling of an internal combustion engine according to an embodiment of the present invention;
fig. 5 is a flowchart of another cooling control method for an internal combustion engine according to the embodiment of the present invention.
Description of reference numerals:
10-a water pump, 110-an air inlet side water jacket, 111-an exhaust side water jacket, 112-an integrated exhaust manifold water jacket, 113-a cylinder head main water jacket, 21-a control device, 22-an engine oil cooler, 23-a radiator, 24-a warm air assembly and 25-a water temperature sensor.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
Example one
Referring to fig. 1 to 2-2, a schematic diagram of an internal combustion engine cooling system of the present invention is given, the internal combustion engine cooling system including a water pump 10 and an internal combustion engine block on which an intake side water jacket 110, an exhaust side water jacket 111, an integrated exhaust manifold water jacket 112, and a head main water jacket 113 are provided;
a water outlet of the water pump 10 is connected to the exhaust side water jacket 111, and coolant is pumped to the exhaust side water jacket 111 by the water pump 10 to cool the exhaust side of the cylinder block;
the exhaust side water jacket 111 is connected with the cylinder head main water jacket 113 and the integrated exhaust manifold water jacket 112 at the same time, the cylinder head main water jacket 113 and the integrated exhaust manifold water jacket 112 form two parallel water paths, and the cooling liquid in the exhaust side water jacket 111 enters the cylinder head main water jacket 113 and the integrated exhaust manifold water jacket 112 respectively in two paths according to a preset proportion and is used for cooling the cylinder head and the integrated exhaust manifold respectively;
the cylinder head main water jacket 113 and the integrated exhaust manifold water jacket 112 are simultaneously connected with the intake side water jacket 110, and cooling liquids in the cylinder head main water jacket 113 and the integrated exhaust manifold water jacket 112 are converged into the intake side water jacket 110 to cool the intake side of the cylinder block.
Specifically, as shown in fig. 1, the internal combustion engine cooling system provided by the present invention includes a water pump 10 and an internal combustion engine cylinder, wherein the water pump 10 is used for providing pressure for flowing the coolant to drive the coolant to flow in a loop, so as to cool the internal combustion engine cylinder. According to the invention, a traditional integral water jacket is designed in a partition manner, an air inlet side water jacket 110, an air outlet side water jacket 111, an integrated exhaust manifold water jacket 112 and a cylinder cover main water jacket 113 are respectively arranged on an internal combustion engine cylinder body, the air inlet side water jacket 110 is close to the position of an upper air inlet of the cylinder body, the air outlet side water jacket is close to the position of an upper air outlet of the cylinder body, the integrated exhaust manifold water jacket 112 is a water jacket arranged near the integrated exhaust manifold, and the cylinder cover main water jacket 113 is a water jacket at the position of a. As shown in fig. 2-1 and 2-2, the structural schematic diagram of each part of the water jacket is given. The water outlet of the water pump 10 is connected with an exhaust side water jacket 111, the water pump 10 pumps cooling liquid to the exhaust side water jacket 111 for cooling the exhaust side of the cylinder body, the exhaust side water jacket 111 is simultaneously connected with a cylinder cover main water jacket 113 and an integrated exhaust manifold water jacket 112, the cylinder cover main water jacket 113 and the integrated exhaust manifold water jacket 112 form two parallel water paths, and the cooling liquid in the exhaust side water jacket 111 enters the cylinder cover main water jacket 113 and the integrated exhaust manifold water jacket 112 respectively in two paths according to a preset proportion for cooling the cylinder cover and the integrated exhaust manifold respectively; the ratio of coolant entering the head main water jacket 113 and the manifold water jacket 112 may be controlled by the shape, cross section, etc. of the water jackets, or may be controlled by providing a valve element. The cylinder head main water jacket 113 and the exhaust manifold water jacket 112 are simultaneously connected with the air inlet side water jacket 110, and cooling liquid in two water paths of the cylinder head main water jacket 113 and the exhaust manifold water jacket 112 is converged into the air inlet side water jacket 110 to cool the air inlet side of the cylinder body. Therefore, according to the water jacket partition structure and the flow direction of the water channel, the cooling liquid firstly cools the exhaust side of the cylinder block with higher temperature, and finally cools the air inlet side of the cylinder block, so that the temperature gradient of the air inlet side and the air outlet side of the cylinder block is reduced, the cooling is uniform, the deformation of the cylinder hole is reduced, and the working reliability and the service life of the internal combustion engine are improved. In addition, the structural design of the integrated exhaust manifold water jacket and the cylinder cover main water jacket which are connected in parallel can distribute different coolant flows for the two water paths, different flows can be matched for different positions, and the heat dissipation efficiency is improved.
According to the internal combustion engine cooling system, the water jacket structure on the cylinder body is designed in a partitioning mode, a brand new cooling circulation water channel is constructed through the water jacket structures of different partitions, the temperature of a region with higher temperature is reduced firstly, the temperature of a region with lower temperature is reduced secondly, uneven shrinkage of each part of the cylinder body can be avoided, excessive deformation is prevented, the main water jacket of the cylinder cover and the integrated exhaust manifold water jacket are arranged into two parallel water channels, cooling liquids with different flows can be conveyed to the cylinder cover and the integrated exhaust manifold part in a targeted mode, and the heat dissipation efficiency is improved.
Example two
Referring to fig. 3, 2-1 and 2-2, a schematic diagram of an internal combustion engine cooling system of the present invention is given, which includes a water pump 10 and an engine block on which an intake side water jacket 110, an exhaust side water jacket 111, an integrated exhaust manifold water jacket 112 and a head main water jacket 113 are provided;
a water outlet of the water pump 10 is connected with the exhaust-side water jacket 111, and coolant is pumped to the exhaust-side water jacket 111 by the water pump 10 for cooling the exhaust side of the cylinder;
the exhaust side water jacket 111 is connected with the cylinder head main water jacket 113 and the integrated exhaust manifold water jacket 112 at the same time, the cylinder head main water jacket 113 and the integrated exhaust manifold water jacket 112 form two parallel water paths, and the cooling liquid in the exhaust side water jacket 111 enters the cylinder head main water jacket 113 and the integrated exhaust manifold water jacket 112 respectively in two paths according to a preset proportion and is used for cooling the cylinder head and the integrated exhaust manifold respectively;
the cylinder head main water jacket 113 and the integrated exhaust manifold water jacket 112 are simultaneously connected with the intake side water jacket 110, and cooling liquids in the cylinder head main water jacket 113 and the integrated exhaust manifold water jacket 112 are converged into the intake side water jacket 110 to cool the intake side of the cylinder block.
Specifically, as shown in fig. 3, the internal combustion engine cooling system provided by the present invention includes a water pump 10 and an internal combustion engine cylinder, wherein the water pump 10 is used for providing pressure for flowing the coolant to drive the coolant to flow in a loop, so as to cool the internal combustion engine cylinder. According to the invention, a traditional integral water jacket is designed in a partition manner, an air inlet side water jacket 110, an air outlet side water jacket 111, an integrated exhaust manifold water jacket 112 and a cylinder cover main water jacket 113 are respectively arranged on an internal combustion engine cylinder body, the air inlet side water jacket 110 is close to the position of an upper air inlet of the cylinder body, the air outlet side water jacket is close to the position of an upper air outlet of the cylinder body, the integrated exhaust manifold water jacket 112 is a water jacket arranged near the integrated exhaust manifold, and the cylinder cover main water jacket 113 is a water jacket at the position of a. As shown in fig. 2-1 and 2-2, the structural schematic diagram of each part of the water jacket is given. The water outlet of the water pump 10 is connected with an exhaust side water jacket 111, the water pump 10 pumps cooling liquid to the exhaust side water jacket 111 for cooling the exhaust side of the cylinder body, the exhaust side water jacket 111 is simultaneously connected with a cylinder cover main water jacket 113 and an integrated exhaust manifold water jacket 112, the cylinder cover main water jacket 113 and the integrated exhaust manifold water jacket 112 form two parallel water paths, and the cooling liquid in the exhaust side water jacket 111 enters the cylinder cover main water jacket 113 and the integrated exhaust manifold water jacket 112 respectively in two paths according to a preset proportion for cooling the cylinder cover and the integrated exhaust manifold respectively; the ratio of coolant entering the head main water jacket 113 and the manifold water jacket 112 may be controlled by the shape, cross section, etc. of the water jackets, or may be controlled by providing a valve element. The cylinder head main water jacket 113 and the exhaust manifold water jacket 112 are simultaneously connected with the air inlet side water jacket 110, and cooling liquid in two water paths of the cylinder head main water jacket 113 and the exhaust manifold water jacket 112 is converged into the air inlet side water jacket 110 to cool the air inlet side of the cylinder body. Therefore, according to the water jacket partition structure and the flow direction of the water channel, the cooling liquid firstly cools the exhaust side of the cylinder block with higher temperature, and finally cools the air inlet side of the cylinder block, so that the temperature gradient of the air inlet side and the air outlet side of the cylinder block is reduced, the cooling is uniform, the deformation of the cylinder hole is reduced, and the working reliability and the service life of the internal combustion engine are improved. In addition, the structural design of the integrated exhaust manifold water jacket and the cylinder cover main water jacket which are connected in parallel can distribute different coolant flows for the two water paths, different flows can be matched for different positions, and the heat dissipation efficiency is improved.
Further, referring to fig. 3, the cooling system of the internal combustion engine further includes a control device 21, an oil cooler 22, a radiator 23, and a heater module 24;
the water inlet of the control device 21 is connected with the water outlet of the air inlet side water jacket 110;
the water outlet of the control device 21 is simultaneously connected with the oil cooler 22, the radiator 23 and the warm air assembly 24, the oil cooler 22, the radiator 23 and the warm air assembly 24 are arranged in parallel, and the control device 21 distributes cooling liquid to the oil cooler 22, the radiator 23 and the warm air assembly 24, wherein the control device 21 is used for adjusting flow and controlling on-off of a cooling water path.
Specifically, as shown in fig. 3, the cooling system of the internal combustion engine of the present invention further includes a control device 21, an oil cooler 22, a radiator 23, and a heater module 24. The water inlet of the control device 21 is connected with the water outlet of the water jacket 110 on the air inlet side, the cooling liquid from the water jacket is collected, the cooling liquid is distributed to the oil cooler 22, the radiator 23 and the warm air group 24 which are connected with the control device 21, when the cooling liquid is conveyed to the oil cooler 22, the oil can be cooled when the temperature is too high, the oil temperature is reduced, a certain viscosity of the lubricating oil is maintained, and excessive abrasion of mechanical parts is avoided; can be at the temperature and cross the time and heat machine oil excessively, the lubricated machine oil of avoiding is too sticky, guarantees lubricating property. When the coolant is delivered to the radiator 23, the heat dissipation of the internal combustion engine can be accelerated by the radiating fins of the radiator, which helps to maintain the internal combustion engine in a proper working temperature range. When the coolant is delivered to the warm air assembly 24, the high-temperature coolant absorbing the heat of the internal combustion engine can heat the air through the warm air assembly 24 to generate hot air for heating the cab in winter. Of course, in real-time applications, the control device 21 may determine to open or close any water path to the oil cooler, radiator, and heater assembly according to actual requirements, and may also adjust the corresponding flow rate after opening. When the three water paths are closed, the cooling liquid can stop circulating and is stored in the water jacket and the water paths, and the whole cooling system reduces the heat dissipated outwards, namely, a warming-up mode is provided, so that the heat absorbed by the cooling liquid can be reduced when the ambient temperature is cooler, and the optimal working temperature of the internal combustion engine is maintained.
Further, referring to fig. 3, the engine cooling system further includes a water temperature sensor 25;
the water temperature sensor 25 is disposed at a water outlet of the intake side water jacket 110, the temperature of the coolant is monitored by the water temperature sensor 25, and the control device 21 adjusts the open/close state and the flow rate to the oil cooler 22, the radiator 23, and the heater module 24 according to the temperature.
Specifically, as shown in fig. 3, the cooling system of the internal combustion engine of the present invention further includes a water temperature sensor 25. The water temperature sensor 25 is provided at a water outlet of the intake side water jacket 110, and the temperature of the coolant can be monitored by the water temperature sensor 25, and when the temperature reaches a predetermined target temperature, the control device 21 is triggered to be in an open state and controls the flow rate to the oil cooler 22, the radiator 23, and the heater module 24. For example, the cooling water paths to the oil cooler 22, the radiator 23 and the heater module 24 are opened simultaneously, and the flow rates of the respective water paths are adjusted, or when the temperature is lower than a preset target temperature in a cold environment, the control device 21 is triggered to operate and the three water paths are closed simultaneously, so as to maintain the optimum operating temperature of the internal combustion engine. Of course, in specific applications, one or more cooling water paths can be opened or closed according to actual conditions.
Further, the control device 21 is a single-input multiple-output switching element.
Specifically, the aforementioned control device 21 may be a single-input multiple-output switching element, such as a ball valve or a solenoid valve, the input end of which receives the coolant from the intake-side water jacket 110, and the multiple output ends of which deliver the coolant to the oil cooler 22, the radiator 23, and the heater module 24.
According to the internal combustion engine cooling system, the water jacket structure on the cylinder body is designed in a partitioning mode, a brand new cooling circulation water channel is constructed through the water jacket structures of different partitions, the temperature of a region with higher temperature is reduced firstly, the temperature of a region with lower temperature is reduced secondly, uneven shrinkage of each part of the cylinder body can be avoided, excessive deformation is prevented, the main water jacket of the cylinder cover and the integrated exhaust manifold water jacket are arranged into two parallel water channels, cooling liquids with different flows can be conveyed to the cylinder cover and the integrated exhaust manifold part in a targeted mode, and the heat dissipation efficiency is improved. In addition, the combination of the control device and the temperature sensor can control the output flow direction and the output flow rate of the cooling liquid, provide a warm-up mode in a cold environment and facilitate the operation of the internal combustion engine in a low-temperature environment.
EXAMPLE III
Referring to fig. 4, the present invention provides an internal combustion engine cooling control method including:
102, dividing cooling liquid in the exhaust side water jacket into two paths according to a preset proportion, and respectively entering a cylinder cover main water jacket and an integrated exhaust manifold water jacket for respectively cooling a cylinder cover and an integrated exhaust manifold;
and 103, converging cooling liquid in the cylinder cover main water jacket and the integrated exhaust manifold water jacket into an air inlet side water jacket for cooling an air inlet side of the cylinder body.
The cooling method of the internal combustion engine is based on the internal combustion engine cooling system, the water jacket structure on the cylinder body is designed in a partitioning mode, a brand new cooling circulation water channel is constructed through the water jacket structures of different partitions, the region with higher temperature is cooled firstly, the region with lower temperature is cooled secondly, uneven shrinkage of each part of the cylinder body can be avoided, the deformation is prevented from being overlarge, in addition, the main water jacket of the cylinder cover and the integrated exhaust manifold water jacket are arranged into two parallel water channels, cooling liquids with different flow rates can be pertinently conveyed to the cylinder cover and the integrated exhaust manifold part, and the heat dissipation efficiency is improved.
Example four
Referring to fig. 5, the present invention provides yet another method of cooling an internal combustion engine, the method comprising:
in step 206, the control device adjusts the open/close state and the flow rate to the oil cooler, the radiator and the heater assembly according to the temperature.
The invention also provides a vehicle comprising the internal combustion engine cooling system.
According to the internal combustion engine cooling method and the vehicle, the water jacket structure on the cylinder body is designed in a partitioning mode, a brand new cooling circulation water path is constructed through the water jacket structures of different partitions, the temperature of a region with higher temperature is reduced firstly, the temperature of a region with lower temperature is reduced secondly, uneven shrinkage of each part of the cylinder body can be avoided, excessive deformation is prevented, the main water jacket of the cylinder cover and the water jacket of the integrated exhaust manifold are arranged into two parallel water paths, cooling liquids with different flows can be conveyed to the cylinder cover and the integrated exhaust manifold in a targeted mode, and the heat dissipation efficiency is improved. In addition, the combination of the control device and the temperature sensor can control the output flow direction and the output flow rate of the cooling liquid, provide a warm-up mode in a cold environment and facilitate the operation of the internal combustion engine in a low-temperature environment.
For the above method embodiment, since it is basically similar to the system embodiment, the description is simple, and the relevant points can be referred to the partial description of the system embodiment.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or terminal that comprises the element.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (8)
1. The cooling system of the internal combustion engine is characterized by comprising a water pump and an internal combustion engine cylinder body, wherein an air inlet side water jacket, an exhaust side water jacket, an integrated exhaust manifold water jacket and a cylinder cover main water jacket are arranged on the internal combustion engine cylinder body;
a water outlet of the water pump is connected with the exhaust side water jacket, and coolant is pumped to the exhaust side water jacket through the water pump and is used for cooling the exhaust side of the cylinder body;
the exhaust side water jacket is simultaneously connected with the cylinder cover main water jacket and the integrated exhaust manifold water jacket, the cylinder cover main water jacket and the integrated exhaust manifold water jacket form two parallel water paths, and cooling liquid in the exhaust side water jacket enters the cylinder cover main water jacket and the integrated exhaust manifold water jacket respectively in two paths according to a preset proportion and is used for cooling the cylinder cover and the integrated exhaust manifold respectively;
the cylinder cover main water jacket and the integrated exhaust manifold water jacket are simultaneously connected with the air inlet side water jacket, and cooling liquid in the cylinder cover main water jacket and the integrated exhaust manifold water jacket is converged into the air inlet side water jacket and is used for cooling the air inlet side of the cylinder body.
2. The internal combustion engine cooling system according to claim 1, further comprising a control device, an oil cooler, a radiator, and a heater module;
the water inlet of the control device is connected with the water outlet of the air inlet side water jacket;
the water outlet of the control device is simultaneously connected with the engine oil cooler, the radiator and the warm air assembly, the engine oil cooler, the radiator and the warm air assembly are arranged in parallel, and cooling liquid is distributed to the engine oil cooler, the radiator and the warm air assembly through the control device, wherein the control device is used for allocating flow and controlling the on-off of a cooling water path.
3. The internal combustion engine cooling system according to claim 2, further comprising a water temperature sensor;
the water temperature sensor is arranged at a water outlet of the air inlet side water jacket, the temperature of cooling liquid is monitored through the water temperature sensor, and the control device adjusts the opening and closing state and the flow rate flowing to the engine oil cooler, the radiator and the warm air assembly according to the temperature.
4. The internal combustion engine cooling system according to claim 2,
the control device is a single-input and multi-output switching element.
5. A cooling control method for an internal combustion engine, characterized by comprising:
pumping cooling liquid to an exhaust side water jacket through a water pump for cooling an exhaust side of the cylinder block;
the cooling liquid in the exhaust side water jacket enters the cylinder cover main water jacket and the integrated exhaust manifold water jacket respectively in two ways according to a preset proportion and is used for cooling the cylinder cover and the integrated exhaust manifold respectively;
and the cooling liquid in the cylinder cover main water jacket and the integrated exhaust manifold water jacket is converged into the air inlet side water jacket and is used for cooling the air inlet side of the cylinder body.
6. The internal combustion engine cooling control method according to claim 5, characterized by further comprising:
and the control device is used for allocating flow and controlling the on-off of a cooling water path.
7. The internal combustion engine cooling control method according to claim 6, characterized by further comprising:
monitoring the temperature of the cooling liquid through a water temperature sensor, wherein the water temperature sensor is arranged at a water outlet of the air inlet side water jacket;
the control device adjusts the opening and closing states and the flow rates flowing to the oil cooler, the radiator and the warm air assembly according to the temperature.
8. A vehicle characterized by comprising the internal combustion engine cooling system according to any one of claims 1 to 4.
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