Cooling system and vehicle

Abstract

The present disclosure provides a cooling system and a vehicle, and belongs to the technical field of vehicles. The cooling system comprises a water tank, a water pump, an engine, a control valve, an air conditioning assembly and a radiator, and the liquid inlet ends of the water tank, the water pump, the engine and the control valve are sequentially communicated. The first liquid outlet end of the control valve, the air conditioning assembly and the liquid inlet end of the water pump are sequentially communicated, and the second liquid outlet end of the control valve, the radiator and the liquid inlet end of the water pump are sequentially communicated. When the temperature of the engine is lower than a first temperature threshold, the first liquid outlet end of the control valve is opened, the second liquid outlet end is closed, and the cooling liquid flowing out of the engine flows into the water pump through the liquid inlet end, the first liquid outlet end and the air conditioning assembly of the control valve. When the temperature of the engine is higher than the first temperature threshold, the second liquid outlet end of the control valve is opened, the first liquid outlet end is closed, and the cooling liquid flowing out of the engine enters the water pump after passing through the liquid inlet end, the second liquid outlet end and the radiator of the control valve, so as to reduce the temperature of the engine and improve the cooling effect of the cooling system.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of engine cooling, and in particular to a cooling system and a vehicle. BACKGROUND

[0002] When the ambient temperature is high or the engine load is large, the engine will generate more heat, so that the temperature in the cooling system is high, which makes it difficult for the cooling system to effectively cool the engine. Thus, the engine overheats.

[0003] Therefore, how to effectively cool the engine is a key problem to be solved. SUMMARY

[0004] The present disclosure provides a cooling system and a vehicle, which can solve the technical problems in the related art. The technical solutions of the cooling system and the vehicle are as follows:

[0005] In a first aspect, the present disclosure provides a cooling system, which comprises a water tank, a water pump, an engine, a control valve, an air conditioning assembly and a radiator;

[0006] The water tank, the water pump, the engine and the liquid inlet end of the control valve are sequentially connected;

[0007] The control valve has a first liquid outlet end and a second liquid outlet end. The first liquid outlet end, the air conditioning assembly and the liquid inlet end of the water pump are sequentially connected. The second liquid outlet end of the control valve, the radiator and the liquid inlet end of the water pump are sequentially connected;

[0008] The control valve is configured to:

[0009] When the temperature of the engine is lower than a first temperature threshold, the first liquid outlet end is opened and the second liquid outlet end is closed;

[0010] When the temperature of the engine is higher than the first temperature threshold, the first liquid outlet end is closed and the second liquid outlet end is opened.

[0011] In a possible implementation, the first temperature threshold is 110-120℃.

[0012] In a possible implementation, the engine comprises a cylinder block and a cylinder head. The cylinder block has a first exhaust side water jacket and a first intake side water jacket. The cylinder head has a second exhaust side water jacket, a second intake side water jacket and an exhaust manifold water jacket.

[0013] The liquid outlet end of the water pump, the first exhaust side water jacket and the second exhaust side water jacket are sequentially connected;

[0014] The outlet liquid end of the second exhaust side water jacket is in sequence communication with the second intake side water jacket, the first intake side water jacket, the radiator, and the inlet liquid end of the water pump;

[0015] The outlet liquid end of the second exhaust side water jacket is in sequence communication with the exhaust manifold water jacket and the inlet liquid end of the control valve.

[0016] In a possible implementation, the cooling system further comprises a thermostat, an inlet liquid end of the thermostat being in communication with the first intake side water jacket and the radiator respectively, and an outlet liquid end of the thermostat being in communication with the inlet liquid end of the water pump;

[0017] The thermostat is configured to:

[0018] When the temperature of the engine is lower than a second temperature threshold, the first intake side water jacket is in communication with the inlet liquid end of the water pump, and the radiator is disconnected from the inlet liquid end of the water pump;

[0019] When the temperature of the engine is higher than the second temperature threshold, at least the radiator is in communication with the inlet liquid end of the water pump;

[0020] The second temperature threshold is lower than the first temperature threshold.

[0021] In a possible implementation, the second temperature threshold is 95-105℃.

[0022] In a possible implementation, the thermostat is further configured to:

[0023] When the temperature of the engine is higher than the second temperature threshold and lower than a third temperature threshold, the first intake side water jacket is in communication with the inlet liquid end of the water pump, and the radiator is in communication with the inlet liquid end of the water pump;

[0024] When the temperature of the engine is higher than the third temperature threshold, the radiator is in communication with the inlet liquid end of the water pump, and the first intake side water jacket is disconnected from the inlet liquid end of the water pump.

[0025] In a possible implementation, the cooling system further comprises an oil cooler, an inlet liquid end of the oil cooler being in communication with the outlet liquid end of the water pump, and an outlet liquid end of the oil cooler being in communication with the inlet liquid end of the thermostat and the radiator respectively;

[0026] The thermostat is further configured to:

[0027] When the temperature of the engine is lower than the second temperature threshold, the thermostat connects the outlet liquid end of the oil cooler with the inlet liquid end of the water pump, and disconnects the radiator from the inlet liquid end of the water pump;

[0028] When the temperature of the engine is higher than the second temperature threshold, at least the thermostat communicates the radiator with the inlet of the water pump.

[0029] In a possible implementation, the cooling system further comprises an exhaust gas recirculation cooler;

[0030] The inlet of the exhaust gas recirculation cooler communicates with the outlet of the first exhaust side water jacket, and the outlet of the exhaust gas recirculation cooler respectively communicates with the thermostat and the radiator;

[0031] The thermostat is further configured to:

[0032] When the temperature of the engine is lower than the second temperature threshold, the outlet of the exhaust gas recirculation cooler communicates with the inlet of the water pump, and the radiator and the inlet of the water pump communicate;

[0033] When the temperature of the engine is higher than the second temperature threshold, at least the radiator and the inlet of the water pump communicate.

[0034] In a possible implementation, the cooling system further comprises a supercharger;

[0035] The exhaust manifold water jacket, the supercharger and the inlet of the water pump communicate in sequence.

[0036] In a possible implementation, the first outlet and the water tank communicate through a first exhaust pipeline, and the first exhaust pipeline is used to exhaust gas in the cooling liquid at the first outlet;

[0037] The radiator and the water tank communicate through a second exhaust pipeline, and the second exhaust pipeline is used to exhaust gas in the cooling liquid at the radiator.

[0038] In a second aspect, the present disclosure provides a vehicle, which comprises the cooling system according to any one of the first aspect.

[0039] The technical solutions provided by the present disclosure have at least the following beneficial effects:

[0040] The present disclosure provides a cooling system, when the temperature of the engine is lower than the first temperature threshold, the first outlet of the control valve is opened, and the second outlet is closed, so that the cooling liquid flowing out of the engine passes through the inlet and the first outlet of the control valve, and then flows into the water pump through the air conditioning assembly, at this time, the air conditioning assembly can utilize the heat of the cooling liquid to heat the interior of the vehicle cabin.

[0041] When the temperature of the engine is higher than the first temperature threshold, the second outlet of the control valve is opened and the first outlet is closed, so that the cooling liquid flowing out of the engine no longer enters the air conditioning assembly, but passes through the inlet and the second outlet in turn, and then flows through the radiator into the water pump. Since the cooling liquid passes through the radiator at this time, the temperature of the engine will be further reduced, thereby improving the cooling effect of the cooling system.

[0042] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure. BRIEF DESCRIPTION OF DRAWINGS

[0043] The accompanying drawings, which are incorporated into the specification and constitute part of it, illustrate embodiments consistent with the present disclosure and serve to explain the principles of the present disclosure. In the drawings:

[0044] Figure 1 is a schematic diagram of a cooling system provided by an embodiment of the present disclosure;

[0045] Figure 2 is a schematic diagram of a cooling system provided by an embodiment of the present disclosure;

[0046] Figure 3 is a schematic diagram of a cooling system provided by an embodiment of the present disclosure;

[0047] Figure 4 is a schematic diagram of a cooling system provided by an embodiment of the present disclosure;

[0048] Figure 5 is a schematic diagram of a cooling system provided by an embodiment of the present disclosure;

[0049] Figure 6 is a schematic diagram of a cooling system provided by an embodiment of the present disclosure;

[0050] Figure 7 is a schematic diagram of a cooling system provided by an embodiment of the present disclosure;

[0051] Figure 8 is a schematic diagram of a cooling system provided by an embodiment of the present disclosure;

[0052] Figure 9 is a schematic diagram of a cooling system provided by an embodiment of the present disclosure;

[0053] Figure 10 is a schematic diagram of a cooling system provided by an embodiment of the present disclosure;

[0054] Figure 11 is a schematic diagram of a cooling system provided by an embodiment of the present disclosure.

[0055] LEGEND:

[0056] 1. A water tank;

[0057] 2. A water pump;

[0058] 3. An engine, 31, a cylinder block, 311, a first exhaust-side water jacket, 312, a first intake-side water jacket, 32, a cylinder head, 321, a second exhaust-side water jacket, 322, a second intake-side water jacket, 323, an exhaust manifold water jacket;

[0059] 4. A control valve, 41, a liquid inlet, 42, a first liquid outlet, 43, a second liquid outlet;

[0060] 5. An air conditioning assembly;

[0061] 6. A radiator;

[0062] 7. A thermostat, 71, a first end, 72, a second end, 73, a third end;

[0063] 8. An oil cooler;

[0064] 9. An exhaust gas recirculation cooler;

[0065] 10. A supercharger;

[0066] 11. A first exhaust line;

[0067] 12. A second exhaust line.

[0068] The specific embodiments of the present disclosure have been shown in the above-described drawings, and will be described in more detail hereinafter. The drawings and the written description are not intended to restrict the scope of the present disclosure in any manner, but to illustrate the concept of the present disclosure to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0069] In order to make the purpose, technical solutions and advantages of the present disclosure clearer, the embodiments of the present disclosure will be described in further detail below with reference to the drawings.

[0070] The terms used in the embodiments of the present disclosure are used only to explain embodiments of the present disclosure, and are not intended to limit the present disclosure. Unless otherwise defined, technical terms or scientific terms used herein have the same meaning as would be understood by those skilled in the art to which the present disclosure belongs. The terms "first", "second", "third", and the like used in the specification of the present patent application and the claims are not intended to denote any sequence, quantity, or importance, but are used to distinguish different components. Similarly, "one" or "a" and the like do not denote a quantity limitation, but denote the presence of at least one. "Include" or "contain" and the like mean that the elements or objects appearing before "include" or "contain" cover the elements or objects listed after "include" or "contain" and their equivalents, and do not exclude other elements or objects. "Connected" or "connected" and the like are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up", "down", "left", "right", and the like are used only to indicate relative positional relationships, and when the absolute positions of the described objects change, the relative positional relationships can also change accordingly.

[0071] The engine cooling system is mainly used to cool high-temperature components such as cylinder blocks and cylinder heads, so that the engine can maintain an appropriate temperature range under all working conditions.

[0072] In the tropical market, due to the high ambient temperature, the coolant in the cooling system is more likely to have a high temperature, making it difficult for the cooling system to effectively cool the engine, thereby causing the temperature between the cylinder block and the cylinder head of the engine to be high, the lubrication performance of the engine to be low, and the wear of the components to be accelerated.

[0073] The coolant in the cooling system will have a high temperature after flowing through the engine. The coolant with a high temperature flows through the HVAC (Heating Ventilation and Air Conditioning) and then enters the water pump. When the vehicle cabin needs to be heated, the HVAC can use the heat of the coolant with a high temperature to heat the vehicle cabin.

[0074] However, when the ambient temperature is high, the vehicle cabin does not need to be heated, so the HVAC does not need to use the heat of the coolant with a high temperature to heat the vehicle cabin.

[0075] Based on the above principle, the embodiments of the present disclosure provide a cooling system. When the temperature is high, the coolant in the cooling system does not pass through the HVAC but passes through the radiator, so that the temperature of the engine in the cooling system can be further reduced, thereby improving the cooling effect of the cooling system.

[0076] The cooling system provided by the embodiments of the present disclosure is exemplarily illustrated as follows.

[0077] As shown in Figure 1 and Figure 2 , the cooling system comprises a water tank 1, a water pump 2, an engine 3, a control valve 4, an air conditioning assembly 5 and a radiator 6. The water tank 1, the water pump 2, the engine 3 and the inlet end 41 of the control valve 4 are sequentially communicated. The control valve 4 has a first outlet end 42 and a second outlet end 43. The first outlet end 42, the air conditioning assembly 5 and the inlet end of the water pump 2 are sequentially communicated. The second outlet end 43 of the control valve 4, the radiator 6 and the inlet end of the water pump 2 are sequentially communicated. The control valve 4 is configured to open the first outlet end 42 and close the second outlet end 43 when the temperature of the engine 3 is lower than a first temperature threshold. The control valve 4 is configured to close the first outlet end 42 and open the second outlet end 43 when the temperature of the engine 3 is higher than the first temperature threshold.

[0078] The air conditioning assembly 5 can also be referred to as HVAC. The cooling liquid can be cooling water.

[0079] The technical solutions provided by the embodiments of the present disclosure are exemplarily illustrated as follows. Figure 1 When the temperature of the engine 3 is lower than the first temperature threshold, the first outlet end 42 of the control valve 4 is opened and the second outlet end 43 is closed, so that the cooling liquid flowing out of the engine 3 sequentially flows through the inlet end 41 of the control valve 4, the first outlet end 42, the air conditioning assembly 5 and then flows into the water pump 2. In this way, when the interior of the vehicle cabin needs to be heated, the air conditioning assembly 5 can use the heat of the cooling liquid with a higher temperature to heat the interior of the vehicle cabin.

[0080] As shown in Figure 2 When the temperature of the engine 3 is higher than the first temperature threshold, the second outlet end 43 of the control valve 4 is opened and the first outlet end 42 is closed, so that the cooling liquid no longer enters the air conditioning assembly 5, but sequentially flows through the inlet end 41 of the control valve 4, the second outlet end 43, the radiator 6 and then returns to the water pump 2. Since the cooling liquid flows through the radiator 6, the temperature of the cooling liquid is effectively reduced, thereby improving the cooling effect of the cooling system.

[0081] In addition, when the ambient temperature is high, since the cooling liquid with a high temperature does not pass through the air conditioning assembly 5, the cooling mode of the air conditioning assembly 5 is opened at this time, which can reduce the energy consumption of the air conditioning assembly and also reduce the temperature of the air outlet of the air conditioning assembly 5.

[0082] In some examples, the first temperature threshold is 110-120°C, and for example, the first temperature threshold can be 115°C. In this way, the temperature of the engine 3 can be maintained within the normal working range, and the phenomenon of overcooling or overheating of the engine 3 can be avoided.

[0083] In some examples, as shown in Figure 3As shown, the engine 3 includes a cylinder block 31 and a cylinder head 32. The cylinder block 31 has a first exhaust-side water jacket 311 and a first intake-side water jacket 312. The cylinder head 32 has a second exhaust-side water jacket 321, a second intake-side water jacket 322 and an exhaust manifold water jacket 323. The outlet end of the water pump 2, the first exhaust-side water jacket 311 and the second exhaust-side water jacket 321 are connected in sequence.

[0084] The outlet end of the second exhaust side water jacket 321 is sequentially connected to the inlet end of the second intake side water jacket 322, the first intake side water jacket 312, the radiator 6, and the water pump 2. The outlet end of the second exhaust side water jacket 321 is also sequentially connected to the exhaust manifold water jacket 323 and the inlet end 41 of the control valve 4.

[0085] The cylinder head 32 can be an IEM (Integrated Exhaust Manifold) cylinder head, that is, the exhaust manifold is integrated into the cylinder head 32. In this way, when the coolant cools the cylinder head 32, it can also cool the exhaust manifold, thereby accelerating the cooling speed of the exhaust manifold.

[0086] After the coolant enters the water pump 2 from the water tank 1, it flows sequentially through the first exhaust side water jacket 311, the second exhaust side water jacket 321, the second intake side water jacket 322 and the first intake side water jacket 312, and then flows into the water pump 2. This process is the cooling cycle inside the engine 3, and this cooling branch is the normally open branch in the cooling system.

[0087] The coolant flowing out of the outlet end of the second exhaust side water jacket 321 will also pass through the exhaust manifold water jacket 323 to cool the exhaust manifold integrated in the cylinder head 32.

[0088] In some examples, such as Figure 4 As shown, the cooling system also includes a thermostat 7. The inlet end (second end 72 and third end 73) of the thermostat 7 is connected to the first intake-side water jacket 312 and the radiator 6, respectively, and the outlet end (first end 71) of the thermostat 7 is connected to the inlet end of the water pump 2. The thermostat 7 is configured to: when the temperature of the engine 3 is lower than a second temperature threshold, connect the first intake-side water jacket 312 to the inlet end of the water pump 2 and disconnect the radiator 6 from the inlet end of the water pump 2; when the temperature of the engine 3 is higher than the second temperature threshold, at least connect the radiator 6 to the inlet end of the water pump 2. The second temperature threshold is lower than the first temperature threshold.

[0089] Among them, the thermostat 7 can be a folding thermostat, a wax thermostat, or a bimetallic thermocouple thermostat.

[0090] like Figure 4As shown, when the engine temperature is below the second temperature threshold, the coolant enters the water pump 2 from the water tank 1 and flows sequentially through the first exhaust side water jacket 311, the second exhaust side water jacket 321, the second intake side water jacket 322, the first intake side water jacket 312, and the thermostat 7, before flowing directly into the water pump 2. When the engine temperature is low, the coolant does not flow through the radiator 6, allowing the engine 3 to heat up quickly and reach its normal operating temperature.

[0091] like Figure 5 As shown, when the temperature of engine 3 exceeds the second temperature threshold, the temperature of components such as engine 3 is already high. Coolant circulation solely between engine 3 and water pump 2 is insufficient to control the engine 3 temperature within the normal range. Therefore, the coolant temperature needs to be further reduced to ensure effective cooling of engine 3 as it passes through it. At this time, thermostat 7 connects the radiator 6 to the inlet of water pump 2. After entering water pump 2 from water tank 1, the coolant flows sequentially through the first exhaust-side water jacket 311, the second exhaust-side water jacket 321, the second intake-side water jacket 322, the first intake-side water jacket 312, radiator 6, and thermostat 7, before flowing into water pump 2.

[0092] In some examples, the second temperature threshold is 95-105℃, for example, the second temperature threshold can be 100℃. This allows the temperature of engine 3 to be kept within the normal operating temperature range, avoiding overheating or undercooling of engine 3.

[0093] In some examples, the thermostat 7 can also control whether the first air intake side water jacket 312 is connected to the liquid inlet end of the water pump 2 based on a third temperature threshold. For example... Figure 6 As shown, the thermostat 7 is also configured to: connect the first intake-side water jacket 312 to the inlet end of the water pump 2, and connect the radiator 6 to the inlet end of the water pump 2, when the temperature of the engine 3 is higher than the second temperature threshold and lower than the third temperature threshold. Figure 5 As shown, when the temperature of engine 3 is higher than the third temperature threshold, radiator 6 is connected to the inlet of water pump 2, and the first intake side water jacket 312 is disconnected from the inlet of water pump 2. The third temperature threshold is higher than the second temperature threshold.

[0094] like Figure 4As shown, when the engine temperature is below the second temperature threshold, the first end 71 and the second end 72 of the thermostat 7 are connected, connecting the first intake-side water jacket 312 to the inlet of the water pump 2. Simultaneously, the third end 73 of the thermostat 7 is closed, disconnecting the radiator 6 from the inlet of the water pump 2. This allows the coolant to flow sequentially through the water pump 2, the first exhaust-side water jacket 311, the second exhaust-side water jacket 321, the second intake-side water jacket 322, the first intake-side water jacket 312, and the thermostat 7, before entering the inlet of the water pump 2. At this time, the coolant does not flow through the radiator 6, and the cooling cycle of the engine 3 is a small loop.

[0095] like Figure 5 As shown, when the engine temperature exceeds the third temperature threshold, the second end 72 of the thermostat 7 closes, thereby disconnecting the first intake-side water jacket 312 from the inlet of the water pump 2. Simultaneously, the first end 71 and the third end 73 of the thermostat 7 connect, connecting the radiator 6 to the inlet of the water pump 2. This allows the coolant to flow sequentially through the water pump 2, the first exhaust-side water jacket 311, the second exhaust-side water jacket 321, the second intake-side water jacket 322, the first intake-side water jacket 312, the radiator 6, and the thermostat 7, before entering the inlet of the water pump 2. At this point, the cooling cycle of the engine 3 is the large cycle.

[0096] like Figure 6 As shown, when the engine temperature is higher than the second temperature threshold and lower than the third temperature threshold, the second end 72 and the third end 73 of the thermostat 7 open simultaneously, connecting the first intake-side water jacket 312 to the inlet end of the water pump 2, and simultaneously connecting the radiator 6 to the inlet end of the water pump 2. At this time, a portion of the coolant flows sequentially through the water pump 2, the first exhaust-side water jacket 311, the second exhaust-side water jacket 321, the second intake-side water jacket 322, the first intake-side water jacket 312, and the thermostat 7, and then enters the inlet end of the water pump 2. At this time, the engine 3 simultaneously performs both large and small circulation cycles.

[0097] The third temperature threshold can be higher than the first temperature threshold or lower than the first temperature threshold.

[0098] If the third temperature threshold is higher than the first temperature threshold, such as Figure 6 As shown, when the temperature of engine 3 is greater than the first temperature threshold but less than the third temperature threshold, the second end 72 and the third end 73 of thermostat 7 open simultaneously, and the second outlet end 43 of control valve 4 opens while the first outlet end 42 closes.

[0099] If the third temperature threshold is lower than the first temperature threshold, and the temperature of engine 3 is greater than the second temperature threshold but less than the third temperature threshold, then...Figure 7 As shown, when the temperature of the engine 3 is greater than the third temperature threshold and less than the first temperature threshold, the second end 72 of the thermostat 7 is closed and the third end 73 is opened. The first outlet end 42 of the control valve 4 is opened and the second outlet end 43 is closed. Figure 8 As shown, when the temperature of the engine 3 is greater than the third temperature threshold and less than the first temperature threshold, the second end 72 of the thermostat 7 is closed and the third end 73 is opened. The first outlet end 42 of the control valve 4 is opened and the second outlet end 43 is closed.

[0100] When the temperature of the engine 3 is high, the oil between the components will be too thin due to the high temperature, which reduces the lubricating ability and causes the engine 3 to be difficult to operate normally. Therefore, as shown in Figure 9 and Figure 10 As shown, in some examples, the cooling system further comprises an oil cooler 8. The inlet end of the oil cooler 8 is in communication with the outlet end of the water pump 2, and the outlet end of the oil cooler 8 is in communication with the inlet end of the thermostat 7 and the radiator 6, respectively. The thermostat 7 is further configured to: when the temperature of the engine 3 is lower than the second temperature threshold, the thermostat 7 communicates the outlet end of the oil cooler 8 with the inlet end of the water pump 2; and when the temperature of the engine 3 is higher than the second temperature threshold, the thermostat 7 communicates the radiator 6 with the inlet end of the water pump 2.

[0101] As shown, when the temperature of the engine 3 is lower than the second temperature threshold, the coolant flows through the water pump 2, the oil cooler 8 and the thermostat 7 in sequence, and then enters the inlet end of the water pump 2. Figure 9 As shown, when the temperature of the engine 3 is higher than the second temperature threshold and less than the third temperature threshold, or as shown, when the temperature of the engine 3 is higher than the third temperature threshold, the coolant flows through the water pump 2, the oil cooler 8, the radiator 6 and the thermostat 7 in sequence, and then enters the inlet end of the water pump 2.

[0102] Figure 10 As shown, when the temperature of the engine 3 is higher than the second temperature threshold and less than the third temperature threshold, or as shown, when the temperature of the engine 3 is higher than the third temperature threshold, the coolant flows through the water pump 2, the oil cooler 8, the radiator 6 and the thermostat 7 in sequence, and then enters the inlet end of the water pump 2. Figure 11 To improve the exhaust gas utilization rate of the engine 3, an EGR (Exhaust Gas Recirculation) system is added to the engine 3, that is, the gas discharged from the engine 3 is sent back into the engine 3. Therefore, as shown in

[0103] As shown, in some examples, the cooling system further comprises an exhaust gas recirculation cooler 9. The exhaust gas recirculation cooler 9 can reduce the temperature of the exhaust gas entering the cylinder block 31, thereby facilitating the reduction of the temperature of the engine 3. The inlet end of the exhaust gas recirculation cooler 9 is in communication with the outlet end of the first exhaust side water jacket 311, and the outlet end of the exhaust gas recirculation cooler 9 is in communication with the thermostat 7 and the radiator 6, respectively. Figures 9-11

[0104] ​​The thermostat 7 is also configured to: connect the outlet of the exhaust gas recirculation cooler 9 to the inlet of the water pump 2 and disconnect the inlet of the radiator 6 and the water pump 2 when the temperature of the engine 3 is below the second temperature threshold; and connect the inlet of the radiator 6 and the water pump 2 when the temperature of the engine 3 is above the second temperature threshold.

[0105] like Figure 9 As shown, when the temperature of engine 3 is lower than the second temperature threshold, the coolant flows sequentially through water pump 2, first exhaust side water jacket 311, exhaust recirculation cooler 9 and thermostat 7, and then enters water pump 2.

[0106] like Figure 10 As shown, when the temperature of engine 3 is higher than the second temperature threshold but lower than the third temperature, or as... Figure 11 As shown, when the temperature of engine 3 is greater than the third temperature threshold, the coolant flows sequentially through water pump 2, first exhaust side water jacket 311, exhaust recirculation cooler 9, radiator 6 and thermostat 7, and then enters water pump 2.

[0107] Among them, such as Figure 9 As shown, when the engine temperature is below the second temperature threshold, the coolant in the exhaust gas recirculation cooler 9 and the coolant in the oil cooler 8 can converge into the same pipe and then enter the water pump 2. Figure 10 and Figure 11 As shown, when the engine temperature of the coolant is higher than the second temperature threshold, the coolant in the first intake side water jacket 312, the coolant in the exhaust recirculation cooler 9, and the coolant in the oil cooler 8 can converge into the same pipe and then enter the radiator 6.

[0108] In some examples, such as Figures 9-11 As shown, the cooling system also includes a turbocharger 10. The exhaust manifold water jacket 323, the turbocharger 10, and the inlet of the water pump 2 are connected in sequence. A portion of the coolant flows out of the exhaust manifold water jacket 323, passes through the turbocharger 10, and enters the inlet of the water pump 2, thereby cooling the turbocharger 10.

[0109] In some examples, such as Figures 9-11 As shown, the first outlet 42 is connected to the water tank 1 via a first vent pipe 11, which is used to discharge the gas in the coolant at the first outlet 42. The radiator 6 is connected to the water tank 1 via a second vent pipe 12, which is used to discharge the gas in the coolant at the radiator 6.

[0110] This allows the gas in the pipes to be vented into the water tank 1, thus preventing excessive air pressure inside the pipes from hindering coolant flow. Furthermore, venting the gas into the water tank 1 increases the pressure within it, which facilitates the supply of water from the water tank 1 to the water pump 2.

[0111] The vehicle comprises the cooling system.

[0112] In some examples, the vehicle can further comprise a gearbox cooling system, a MCU cooling system, a battery cooling system, an auxiliary heating system, etc. The auxiliary heating system needs to be connected to the cylinder head 3. The cooling system can be adaptively adjusted according to the arrangement of each system in the vehicle without changing the cooling principle of the engine 3.

[0113] The technical scheme provided by the embodiment of the present disclosure, when the temperature of the engine 3 is lower than the first temperature threshold, the first liquid outlet end 42 of the control valve 4 in the cooling system is opened, and the second liquid outlet end 43 is closed, so that the cooling liquid flowing out of the engine 3 flows through the liquid inlet end 41, the first liquid outlet end 42 and the air conditioning assembly 5 of the control valve 4 in turn, and then flows into the water pump 2. When the temperature of the engine 3 is higher than the first temperature threshold, the second liquid outlet end 43 of the control valve 4 is opened, and the first liquid outlet end 42 is closed, so that the cooling liquid flowing out of the engine 3 no longer enters the air conditioning assembly 5, but flows through the liquid inlet end 41, the second liquid outlet end 43 and the radiator 6 of the control valve 4 in turn, and then returns to the water pump. Since the cooling liquid flows through the radiator 6 at this time, the temperature of the engine 3 is reduced, thereby improving the cooling effect of the cooling system.

[0114] The above is only an optional embodiment of the present disclosure, and is not used to limit the present disclosure. Any modification, equivalent replacement, improvement, etc. made within the principle of the present disclosure shall be included in the protection scope of the present disclosure.

Claims

1. A cooling system, characterized by, The cooling system comprises a water tank (1), a water pump (2), an engine (3), a control valve (4), an air conditioning assembly (5), a radiator (6) and a thermostat (7); The water tank (1), the water pump (2), the engine (3) and the liquid inlet end (41) of the control valve (4) are sequentially communicated; The engine (3) comprises a cylinder body (31) and a cylinder cover (32), the cylinder body (31) is provided with a first exhaust side water jacket (311) and a first intake side water jacket (312), the cylinder cover (32) is provided with a second exhaust side water jacket (321), a second intake side water jacket (322) and an exhaust manifold water jacket (323), the liquid outlet end of the water pump (2), the first exhaust side water jacket (311) and the second exhaust side water jacket (321) are sequentially communicated, the liquid outlet end of the second exhaust side water jacket (321), the second intake side water jacket (322), the first intake side water jacket (312) and the radiator (6) are sequentially communicated, the liquid outlet end of the second exhaust side water jacket (321), the exhaust manifold water jacket (323) and the liquid inlet end (41) of the control valve (4) are sequentially communicated; The control valve (4) is provided with a first liquid outlet end (42) and a second liquid outlet end (43), the first liquid outlet end (42), the air conditioning assembly (5) and the liquid inlet end of the water pump (2) are sequentially communicated, the second liquid outlet end (43), the radiator (6) and the liquid inlet end of the water pump (2) are sequentially communicated; The liquid inlet end of the thermostat (7) is communicated with the first intake side water jacket (312) and the radiator (6), and the liquid outlet end of the thermostat (7) is communicated with the liquid inlet end of the water pump (2); When the temperature of the engine (3) is lower than a second temperature threshold, the control valve (4) opens the first liquid outlet end (42) and closes the second liquid outlet end (43), the thermostat (7) communicates the first intake side water jacket (312) with the liquid inlet end of the water pump (2) and disconnects the radiator (6) from the liquid inlet end of the water pump (2); When the temperature of the engine (3) is higher than the second temperature threshold and lower than a third temperature threshold, the control valve (4) closes the first liquid outlet end (42) and opens the second liquid outlet end (43), the thermostat (7) communicates the first intake side water jacket (312) with the liquid inlet end of the water pump (2) and communicates the radiator (6) with the liquid inlet end of the water pump (2); When the temperature of the engine (3) is higher than the third temperature threshold, the control valve (4) closes the first liquid outlet end (42) and opens the second liquid outlet end (43), the thermostat (7) communicates the radiator (6) with the liquid inlet end of the water pump (2) and disconnects the first intake side water jacket (312) from the liquid inlet end of the water pump (2).

2. The cooling system of claim 1, wherein, The second temperature threshold is 95-105℃.

3. The cooling system of claim 1, wherein, The cooling system further comprises an oil cooler (8), a liquid inlet end of the oil cooler (8) being communicated with a liquid outlet end of the water pump (2), a liquid outlet end of the oil cooler (8) being communicated with the liquid inlet end of the thermostat (7) and the radiator (6) respectively; The thermostat (7) is further configured to: when the temperature of the engine (3) is lower than the second temperature threshold, the liquid outlet end of the oil cooler (8) is communicated with the liquid inlet end of the water pump (2), and the radiator (6) is disconnected from the liquid inlet end of the water pump (2); when the temperature of the engine (3) is higher than the second temperature threshold, at least the radiator (6) is communicated with the liquid inlet end of the water pump (2).

4. The cooling system of claim 1, wherein, The cooling system further comprises an exhaust gas recirculation cooler (9); A liquid inlet end of the exhaust gas recirculation cooler (9) is communicated with a liquid outlet end of the first exhaust side water jacket (311), a liquid outlet end of the exhaust gas recirculation cooler (9) is communicated with the thermostat (7) and the radiator (6) respectively; The thermostat (7) is further configured to: when the temperature of the engine (3) is lower than the second temperature threshold, the liquid outlet end of the exhaust gas recirculation cooler (9) is communicated with the liquid inlet end of the water pump (2), and the radiator (6) and the liquid inlet end of the water pump (2) are disconnected; when the temperature of the engine (3) is higher than the second temperature threshold, at least the radiator (6) and the liquid inlet end of the water pump (2) are communicated.

5. Cooling system according to claim 1 or 2, characterized in that The first liquid outlet end (42) is communicated with the water tank (1) through a first exhaust pipeline (11) for exhausting gas in the cooling liquid at the first liquid outlet end (42); The radiator (6) is communicated with the water tank (1) through a second exhaust pipeline (12) for exhausting gas in the cooling liquid at the radiator (6).

6. A vehicle characterized by comprising: The vehicle comprises the cooling system according to any one of claims 1-5.

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