Cooling control system, control method and vehicle

Abstract

This application relates to the field of vehicle technology and discloses a cooling control system, control method, and vehicle, including: a low-temperature radiator, a water-cooled intercooler, an ECU, a first valve, and a second valve; the first valve, the low-temperature radiator, the second valve, and the water-cooled intercooler are sequentially connected to form a low-temperature heat dissipation circuit; the first valve, the water-cooled intercooler, the second valve, and the engine block are sequentially connected to form a high-temperature cooling circuit; the ECU is connected to the first valve and the second valve respectively. By introducing the relatively high-temperature coolant from the engine cooling system into the independently operating low-temperature heat dissipation circuit of the water-cooled intercooler, and controlling the water flow through a proportional valve on the cooling pipe to control the coolant temperature of the water-cooled intercooler, the optimal intake manifold temperature is achieved under different ambient temperatures, avoiding misfire problems caused by condensation.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, and in particular to a cooling control system, control method, and vehicle. Background Technology

[0002] The exhaust gas from the low-pressure EGR system of a turbocharged gasoline engine passes through the turbocharger compressor and is then cooled by a water-cooled intercooler before entering the intake manifold.

[0003] Under low ambient temperature conditions, the water temperature in the low-temperature heat dissipation circuit of the water-cooled intercooler is low and the temperature rises slowly. When the high-temperature water vapor in the EGR exhaust gas encounters the low wall temperature, the condensate increases. A large amount of condensate entering the cylinder can cause engine misfire and affect the normal operation of the engine. Summary of the Invention

[0004] The purpose of this application is to provide a cooling control system, control method and vehicle, which aims to solve the technical problem that the EGR system condenses at low ambient temperatures, increasing the risk of engine misfire.

[0005] To achieve the above objectives, this application proposes a cooling control system, which includes: a low-temperature radiator, a water-cooled intercooler, an ECU, a first valve, and a second valve;

[0006] The first valve, the low-temperature radiator, the second valve, and the water-cooled intercooler are connected in sequence to form a low-temperature heat dissipation circuit;

[0007] The first valve, the water-cooled intercooler, the second valve, and the engine block are sequentially connected to form a high-temperature cooling circuit;

[0008] The ECU is connected to the first valve and the second valve respectively;

[0009] The ECU is used to switch different ports of the first valve and the second valve according to the threshold range of the ambient temperature value and the intake manifold temperature value.

[0010] The ECU is also used to control the opening degree of the different ports according to the threshold range of the ambient temperature value and the intake manifold temperature value.

[0011] The first / second valve is used to control the flow rate of coolant flowing through the low-temperature radiator and the water-cooled intercooler according to the opening degree;

[0012] The low-temperature radiator is used to dissipate heat from the coolant in the low-temperature heat dissipation circuit;

[0013] The water-cooled intercooler is used to regulate the intake manifold temperature using the coolant.

[0014] In one embodiment, the threshold interval includes a first threshold interval, a second threshold interval, a third threshold interval, a fourth threshold interval, and a fifth threshold interval;

[0015] The ECU is also used to activate the low-temperature heat dissipation circuit when the ambient temperature value is within the first threshold range;

[0016] The ECU is further configured to, when the ambient temperature value is in the second threshold range, activate the high-temperature cooling circuit if the intake manifold temperature value is in the second threshold range or the third threshold range; and activate the low-temperature heat dissipation circuit if the intake manifold temperature value is in the fourth threshold range.

[0017] The ECU is further configured to, when the ambient temperature value is within the third threshold range, activate the high-temperature cooling circuit if the intake manifold temperature value is within the third threshold range; and activate the low-temperature heat dissipation circuit if the intake manifold temperature value is within the fourth threshold range.

[0018] The ECU is also used to activate the low-temperature heat dissipation circuit when the ambient temperature value is in the fourth threshold range and the intake manifold temperature value is in the fourth threshold range.

[0019] The ECU is also used to disable the EGR system and activate the low-temperature heat dissipation circuit when the ambient temperature value is within the fifth threshold range.

[0020] In one embodiment, the first valve and the second valve are proportional valves;

[0021] The first port of the first valve is connected to the first end of the engine block, the second port of the first valve is connected to the first end of the low-temperature radiator, and the third port of the first valve is connected to the first end of the water-cooled intercooler.

[0022] The first port of the second valve is connected to the second end of the water-cooled intercooler, the second port of the second valve is connected to the second end of the low-temperature radiator, and the third port of the second valve is connected to the second end of the engine block.

[0023] The ECU is connected to the fourth port of the first valve and the fourth port of the second valve, respectively.

[0024] In one embodiment, the cooling control system further includes: a first electronic water pump and a second electronic water pump;

[0025] The first electronic water pump is disposed between the engine block and the first port of the first valve;

[0026] The second electronic water pump is located between the third port of the first valve and the first end of the water-cooled intercooler.

[0027] Furthermore, to achieve the above objectives, this application also proposes a control method for a cooling control system, applied to the cooling control system described above, wherein the control method for the cooling control system includes:

[0028] Obtain ambient temperature and intake manifold temperature values;

[0029] Based on the threshold range of the ambient temperature value and the intake manifold temperature value, different ports of the first valve and the second valve are activated;

[0030] The opening degree of the different ports is controlled according to the threshold range of the ambient temperature value and the intake manifold temperature value.

[0031] The flow rate of coolant flowing through the low-temperature radiator and the water-cooled intercooler is controlled according to the opening degree, and the intake manifold temperature is adjusted by the flow rate of the coolant.

[0032] In one embodiment, the threshold interval includes a first threshold interval, a second threshold interval, a third threshold interval, a fourth threshold interval, and a fifth threshold interval; the step of connecting different ports of the first valve and the second valve according to the threshold intervals where the ambient temperature value and the intake manifold temperature value fall includes:

[0033] When the ambient temperature is within a first threshold range, the first port of the first valve is closed, and the second and third ports of the first valve are open; the first and second ports of the second valve are open, and the third port of the second valve is closed.

[0034] When the ambient temperature is within the second threshold range, if the intake manifold temperature is within the second threshold range or the third threshold range, the second port of the first valve is closed, and the first and third ports of the first valve are open; the first and third ports of the second valve are open, and the second port of the second valve is closed; if the intake manifold temperature is within the fourth threshold range, the first port of the first valve is closed, and the second and third ports of the first valve are open; the first and second ports of the second valve are open, and the third port of the second valve is closed.

[0035] When the ambient temperature is within the third threshold range, if the intake manifold temperature is within the third threshold range, the second port of the first valve is closed, and the first and third ports of the first valve are open; the first and third ports of the second valve are open, and the second port of the second valve is closed; if the intake manifold temperature is within the fourth threshold range, the first port of the first valve is closed, and the second and third ports of the first valve are open; the first and second ports of the second valve are open, and the third port of the second valve is closed.

[0036] When the ambient temperature value is within the fourth threshold range, if the intake manifold temperature value is within the fourth threshold range, the first port of the first valve is closed, and the second and third ports of the first valve are open; the first and second ports of the second valve are open, and the third port of the second valve is closed.

[0037] When the ambient temperature value is within the fifth threshold range, the EGR system function is turned off, the first port of the first valve is closed, and the second and third ports of the first valve are open; the first and second ports of the second valve are opened, and the third port of the second valve is closed.

[0038] In one embodiment, the step of controlling the opening degree of the different ports based on the threshold range of the ambient temperature value and the intake manifold temperature value includes:

[0039] When the intake manifold temperature is in the second threshold range, the opening degree of the first valve, the first port and the third port of the first valve, and the second valve are all greater than the opening degree of the first valve and the second valve when the intake manifold temperature is in the third threshold range.

[0040] In one embodiment, the step of controlling the flow rate of coolant through the low-temperature radiator and the water-cooled intercooler according to the opening degree, and adjusting the intake manifold temperature value by means of the coolant flow rate, includes:

[0041] When the intake manifold temperature is in the second threshold range, the flow rate of coolant flowing through the first valve and the second valve is greater than the flow rate of coolant flowing through the first valve and the second valve when the intake manifold temperature is in the third threshold range.

[0042] In one embodiment, the step of controlling the opening degree of the different ports according to the threshold range of the ambient temperature value and the intake manifold temperature value further includes:

[0043] Obtain the engine's outlet water temperature requirement;

[0044] When the outlet water temperature is greater than the outlet water temperature threshold, the opening degree of the second valve is adjusted to the first opening degree; or,

[0045] When the outlet water temperature is not greater than the outlet water temperature threshold, the opening degree of the second valve is adjusted to the second opening degree; wherein,

[0046] The first opening is smaller than the second opening.

[0047] In addition, to achieve the above objectives, this application also proposes a vehicle including the cooling control system described above, or including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement a control method for the cooling control system described above.

[0048] This application proposes a cooling control system, comprising: a low-temperature radiator, a water-cooled intercooler, an ECU, a first valve, and a second valve; the first valve, the low-temperature radiator, the second valve, and the water-cooled intercooler are sequentially connected to form a low-temperature heat dissipation circuit; the first valve, the water-cooled intercooler, the second valve, and the engine block are sequentially connected to form a high-temperature cooling circuit; the ECU is connected to the first valve and the second valve respectively; the ECU is used to open different ports of the first valve and the second valve according to a threshold range of ambient temperature and intake manifold temperature; the ECU is also used to control the opening degree of the different ports according to the threshold range of ambient temperature and intake manifold temperature; the first / second valve is used to control the flow rate of coolant flowing through the low-temperature radiator and the water-cooled intercooler according to the opening degree; the low-temperature radiator is used for heat dissipation of coolant in the low-temperature heat dissipation circuit; the water-cooled intercooler is used to regulate the intake manifold temperature through the coolant. By introducing the relatively high-temperature coolant from the engine cooling system into the independently operating low-temperature heat dissipation circuit of the water-cooled intercooler, and controlling the water flow through a proportional valve on the cooling pipe to control the coolant temperature of the water-cooled intercooler, the optimal intake manifold temperature can be achieved under different ambient temperatures. This avoids misfire problems caused by condensation, enabling EGR to be applied at its maximum operating range and at a higher EGR rate, effectively reducing fuel consumption and improving reliability. Attached Figure Description

[0049] Figure 1 This is a schematic diagram of the modules of the first embodiment of the cooling control system proposed in this application;

[0050] Figure 2 This is a schematic diagram of the first module of the second embodiment of the cooling control system proposed in this application;

[0051] Figure 3This is a schematic diagram of the second module of the second embodiment of the cooling control system proposed in this application;

[0052] Figure 4 This is a flowchart illustrating the third embodiment of the control method for the cooling control system proposed in this application.

[0053] Explanation of icon numbers:

[0054] label name label name 100 Low temperature heat sink 500 Second valve 200 Water-cooled intercooler 600 Engine block 300 ECU 700 First Electronic Water Pump 400 First valve 800 Second electronic water pump Detailed Implementation

[0055] It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit this application.

[0056] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0057] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0058] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed in this application.

[0059] Reference Figure 1 , Figure 1 This is a schematic diagram of the modules of the first embodiment of the cooling control system proposed in this application. Based on Figure 1 The first embodiment of the cooling control system of this application is presented.

[0060] The cooling control system includes: a low-temperature radiator 100, a water-cooled intercooler 200, an ECU 300, a first valve 400, and a second valve 500; the first valve 400, the low-temperature radiator 100, the second valve 500, and the water-cooled intercooler 200 are sequentially connected to form a low-temperature heat dissipation circuit; the first valve 400, the water-cooled intercooler 200, the second valve 500, and the engine block 600 are sequentially connected to form a high-temperature cooling circuit; the ECU 300 is connected to the first valve 400 and the second valve 500 respectively.

[0061] It should be understood that the cooling control system mainly consists of several important components: a low-temperature radiator 100, a water-cooled intercooler 200, an electronic control unit (ECU 300), a first valve 400, and a second valve 500. In this cooling control system, the low-temperature cooling circuit is structured as follows: the first valve 400, as the starting component, is connected to the low-temperature radiator 100; the low-temperature radiator 100 is then connected to the second valve 500, which in turn is connected to the water-cooled intercooler 200, thus forming the low-temperature cooling circuit. The high-temperature cooling circuit is structured as follows: the first valve 400 is first connected to the water-cooled intercooler 200; the water-cooled intercooler 200 is then connected to the second valve 500; and the second valve 500 is then connected to the engine block 600, thus forming the high-temperature cooling circuit.

[0062] It should be noted that the electronic control unit (ECU300) plays an important control role in the entire cooling control system. It is connected to the first valve 400 and the second valve 500 respectively, so as to effectively control these two valves to ensure that the entire cooling control system operates normally according to the predetermined requirements and meets the cooling needs under different operating conditions.

[0063] The ECU300 is used to switch different ports of the first valve 400 and the second valve 500 according to the threshold range of the ambient temperature value and the intake manifold temperature value.

[0064] It should be understood that, specifically, the ECU300 acts as an intelligent control hub. It first acquires two crucial parameters: ambient temperature and intake manifold temperature. Then, it compares these values ​​with pre-defined threshold ranges. These threshold ranges are like defined zones, each potentially corresponding to different operating modes or requirements. Once the specific threshold range for the ambient and intake manifold temperatures is determined, the ECU300, based on its built-in control logic, accurately activates different ports of the first valve 400 and the second valve 500, thereby achieving precise control and efficient operation of the entire system.

[0065] The ECU300 is also used to control the opening degree of the different ports according to the threshold range of the ambient temperature value and the intake manifold temperature value.

[0066] It should be noted that the ECU300 first acquires the ambient temperature and intake manifold temperature values, and then determines which preset threshold range each temperature value falls within. Based on these different threshold ranges, the ECU300 accurately controls the opening degree of the different ports according to a predetermined control strategy, thereby enabling engine operation-related operations such as adjusting intake air volume and controlling fuel injection quantity, to ensure stable and efficient engine operation under different temperature environments.

[0067] The first / second valve 500 is used to control the flow rate of coolant flowing through the low-temperature radiator 100 and the water-cooled intercooler 200 according to the opening degree.

[0068] It should be understood that the first valve 400 can effectively regulate the flow rate of coolant to the cryogenic radiator 100 and the water-cooled intercooler 200 according to a predetermined opening degree or dynamically adjusted according to the system operating status. This regulation process is a relatively complex and critical operation, which needs to ensure that the coolant flow rate meets the basic requirements for normal operation of the cryogenic radiator 100 and the water-cooled intercooler 200, without causing problems such as system failure or reduced efficiency due to excessive or insufficient flow.

[0069] It should be noted that the second valve 500 also performs a similar function. It controls the flow rate of coolant through the cryogenic radiator 100 and the water-cooled intercooler 200 according to a specific opening value. This control mechanism is an important component of the entire system's thermal management. Through the coordinated control of coolant flow by the first valve 400 and the second valve 500, the cryogenic radiator 100 and the water-cooled intercooler 200 can maintain a relatively ideal working state under different operating conditions, thereby ensuring the stable operation of the entire equipment or system.

[0070] The low-temperature radiator 100 is used to dissipate heat from the coolant in the low-temperature heat dissipation circuit.

[0071] It should be understood that in this low-temperature heat dissipation circuit, the low-temperature radiator 100 is designed to effectively handle the heat dissipation problem of the coolant in the low-temperature heat dissipation circuit, thereby ensuring that the entire low-temperature heat dissipation circuit, especially the water-cooled intercooler 200, can operate normally and be maintained within a suitable temperature range.

[0072] The water-cooled intercooler 200 is used to regulate the intake manifold temperature using the coolant.

[0073] It should be noted that during the operation of the entire system, the water-cooled intercooler 200 acts as a precise temperature regulation hub, using the coolant as a medium to effectively regulate the temperature of the intake manifold. This regulation is crucial, ensuring that the temperature of the intake manifold remains within a suitable range, thereby guaranteeing the normal operation of the entire system and improving various indicators such as system performance and efficiency.

[0074] This embodiment proposes a cooling control system, which includes: a low-temperature radiator 100, a water-cooled intercooler 200, an ECU 300, a first valve 400, and a second valve 500; the first valve 400, the low-temperature radiator 100, the second valve 500, and the water-cooled intercooler 200 are sequentially connected to form a low-temperature heat dissipation circuit; the first valve 400, the water-cooled intercooler 200, the second valve 500, and the engine block 600 are sequentially connected to form a high-temperature cooling circuit; the ECU 300 is connected to the first valve 400 and the second valve 500 respectively; the ECU 300... The ECU 300 is used to open different ports of the first valve 400 and the second valve 500 according to the threshold range of the ambient temperature and the intake manifold temperature. The ECU 300 is also used to control the opening degree of the different ports according to the threshold range of the ambient temperature and the intake manifold temperature. The first / second valve 500 is used to control the flow rate of coolant through the low-temperature radiator 100 and the water-cooled intercooler 200 according to the opening degree. The low-temperature radiator 100 is used for cooling the coolant in the low-temperature cooling circuit. The water-cooled intercooler 200 is used to regulate the intake manifold temperature through the coolant. By introducing relatively high-temperature coolant from the engine cooling system into the independently operating low-temperature cooling circuit of the water-cooled intercooler 200, and controlling the water flow rate through a proportional valve on the cooling pipe to control the coolant temperature of the water-cooled intercooler 200, the optimal intake manifold temperature is achieved under different ambient temperatures. This avoids misfires caused by condensation, enables EGR to be applied at its maximum operating range and a higher EGR rate, effectively reduces fuel consumption, and improves reliability.

[0075] Reference Figure 2 and Figure 3 , Figure 2 This is a schematic diagram of the first module of the second embodiment of the cooling control system proposed in this application. Figure 3 This is a schematic diagram of the second module of the second embodiment of the cooling control system proposed in this application. The second embodiment of the cooling control system of this application is proposed based on the first embodiment described above.

[0076] The threshold intervals include a first threshold interval, a second threshold interval, a third threshold interval, a fourth threshold interval, and a fifth threshold interval.

[0077] It should be understood that the first threshold interval, the second threshold interval, the third threshold interval, the fourth threshold interval, and the fifth threshold interval consist of five intervals of four temperature thresholds, namely T0: -10℃~0℃, T1: 20℃~30℃, T2: 40℃~50℃, and T3: 55℃~60℃. The first threshold interval is less than T0, the second threshold interval is greater than or equal to T0 and less than or equal to T1, the third threshold interval is greater than T1 and less than or equal to T2, the fourth threshold interval is greater than T2 and less than or equal to T3, and the fifth threshold interval is greater than T3.

[0078] The ECU300 is also used to activate the low-temperature heat dissipation circuit when the ambient temperature value is within the first threshold range.

[0079] It should be noted that, referring to Figure 2 When the ambient temperature is lower than the threshold temperature T0, the EGR system is shut down to prevent a large amount of condensate from forming at excessively low temperatures; control the first valve 400 to close port 1; control the second valve 500 to close port 7; at this time, ports 2 and 3 are connected, and ports 5 and 6 are connected, and the water-cooled intercooler 200 uses a dedicated low-temperature heat dissipation circuit for cooling.

[0080] The ECU300 is further configured to, when the ambient temperature value is in the second threshold range, activate the high-temperature cooling circuit if the intake manifold temperature value is in the second threshold range or the third threshold range; and activate the low-temperature heat dissipation circuit if the intake manifold temperature value is in the fourth threshold range.

[0081] It should be understood that when the threshold temperature T0 ≤ ambient temperature ≤ threshold temperature T1, ECU300 controls the first valve 400 to open port 1. At this time, the coolant in the water-cooled intercooler 200's inlet cooling pipe comes from: ① the high-temperature cooling circuit circulating from the first electric water pump into port 1; ② the dedicated low-temperature heat dissipation circuit of the water-cooled intercooler 200. The opening size of port 1 is controlled by the intake manifold temperature closed-loop: I. When the intake manifold temperature ≤ threshold temperature T1, port 1 is fully open. At this time, the second electric water pump 800 is also fully open, allowing the coolant to flow rapidly through the water-cooled intercooler 200 and quickly raising the intake manifold temperature. Figure 3The opening of port 7 is adjusted according to the engine's outlet water temperature requirement. A smaller opening is needed when the outlet water temperature requirement is high, and a larger opening is needed when the outlet water temperature requirement is low. II. When the threshold temperature T1 < intake manifold temperature ≤ threshold temperature T2, the opening of port 1, the opening of the electric water pump, and the speed are determined based on the difference between the actual intake manifold temperature and the threshold temperature T2. Generally, the larger the temperature difference, the higher the opening and speed; conversely, the smaller the temperature difference, the lower the opening and speed. At this time, ports 1 and 3 are connected, and ports 5 and 7 are connected. The water-cooled intercooler 200 uses a dedicated high-temperature cooling circuit for cooling. III. When the intake manifold temperature > threshold temperature T2, the position of the first valve 400 is controlled to close port 1; the position of the second valve 500 is controlled to close port 7. At this time, ports 2 and 3 are connected, and ports 5 and 6 are connected. The water-cooled intercooler 200 uses a dedicated low-temperature heat dissipation circuit for cooling. The opening size of port 7 is adjusted according to the engine's water outlet temperature requirements. When the water outlet temperature requirement is high, the opening size is small, and when the water outlet temperature requirement is low, the opening size is large.

[0082] The ECU300 is further configured to, when the ambient temperature value is within the third threshold range, activate the high-temperature cooling circuit if the intake manifold temperature value is within the third threshold range; and activate the low-temperature heat dissipation circuit if the intake manifold temperature value is within the fourth threshold range.

[0083] It should be understood that when the threshold temperature T1 < ambient temperature ≤ threshold temperature T2, the ECU300 controls the first valve 400 to open port 1. At this time, the coolant in the water cooling pipe of the water-cooled intercooler 200 comes from: ① the high-temperature cooling circuit circulation from the first electric water pump into port 1; ② the low-temperature heat dissipation circuit dedicated to the water-cooled intercooler 200. The opening size of port 1 is controlled in a closed-loop manner based on the intake manifold temperature: Ⅰ. When the ambient temperature ≤ intake manifold temperature ≤ threshold temperature T2, the opening size of port 1, the opening size of the electric water pump, and the speed are determined based on the difference between the actual intake manifold temperature and the threshold temperature T2. Generally, the larger the temperature difference, the higher the opening size and speed; conversely, the smaller the temperature difference, the lower the opening size and speed. Ⅱ. When the intake manifold temperature > threshold temperature T2, the position of the first valve 400 is controlled to close port 1; the position of the second valve 500 is controlled to close port 7. At this time, ports 2 and 3 are connected, and ports 5 and 6 are connected, and the water-cooled intercooler 200 uses a dedicated low-temperature heat dissipation circuit for cooling. The opening size of port 7 is adjusted according to the engine outlet water temperature requirement; the opening size is smaller when the outlet water temperature requirement is high, and larger when the outlet water temperature requirement is low.

[0084] The ECU300 is also used to activate the low-temperature heat dissipation circuit when the ambient temperature value is within the fourth threshold range and the intake manifold temperature value is within the fourth threshold range.

[0085] It should be noted that when the threshold temperature T2 < ambient temperature ≤ threshold temperature T3, the position of the first valve 400 is controlled to close port 1; the position of the second valve 500 is controlled to close port 7; at this time, ports 2 and 3 are connected, and ports 5 and 6 are connected, and the water-cooled intercooler 200 is cooled by a dedicated low-temperature heat dissipation circuit; the ECU 300 adjusts the opening of the second electronic water pump 800 according to the engine's operating needs to achieve the intake manifold temperature variation within the required range.

[0086] The ECU300 is also used to disable the EGR system function and activate the low-temperature heat dissipation circuit when the ambient temperature value is within the fifth threshold range.

[0087] It should be understood that when the ambient temperature is greater than the threshold temperature T3, the position of the first valve 400 is controlled to close port 1; the position of the second valve 500 is controlled to close port 7. At this time, ports 2 and 3 are connected, and ports 5 and 6 are connected, and the water-cooled intercooler 200 is cooled using a dedicated low-temperature heat dissipation circuit. The ECU 300 adjusts the opening of the second electronic water pump 800 according to the engine's operating needs to keep the intake manifold temperature within the required range. At this time, the EGR system is turned off to avoid knocking problems caused by high temperatures.

[0088] The first valve 400 and the second valve 500 are proportional valves; the first port of the first valve 400 is connected to the first end of the engine block 600, the second port of the first valve 400 is connected to the first end of the low-temperature radiator 100, and the third port of the first valve 400 is connected to the first end of the water-cooled intercooler 200.

[0089] It should be noted that both the first valve 400 and the second valve 500 are proportional valves. The first port of the first valve 400 is connected to the first end of the engine block 600, enabling specific heat exchange or media transfer between them. The second port of the first valve 400 is connected to the first end of the cryogenic radiator 100, establishing a pathway between the cryogenic radiator 100 and the first valve 400, which may be used to adjust the operating status or temperature control of the cryogenic radiator 100. Simultaneously, the third port of the first valve 400 is connected to the first end of the water-cooled intercooler 200, facilitating heat or media exchange between the water-cooled intercooler 200 and the first valve 400.

[0090] The first port of the second valve 500 is connected to the second end of the water-cooled intercooler 200, the second port of the second valve 500 is connected to the second end of the low-temperature radiator 100, and the third port of the second valve 500 is connected to the second end of the engine block 600.

[0091] It should be understood that the first port of the second valve 500 is connected to the second end of the water-cooled intercooler 200. This connection, together with the connection between the first valve 400 and the water-cooled intercooler 200, forms part of a complete loop or interactive system. The second port of the second valve 500 is connected to the second end of the low-temperature radiator 100, and in conjunction with the connection between the first valve 400 and the low-temperature radiator 100, plays an important role in regulating the overall operation or state of the low-temperature radiator 100. The third port of the second valve 500 is connected to the second end of the engine block 600, further improving the connection relationship between the various components in the entire system.

[0092] The ECU300 is connected to the fourth port of the first valve 400 and the fourth port of the second valve 500, respectively.

[0093] It should be noted that the ECU300 is connected to the fourth port of the first valve 400 and the fourth port of the second valve 500. Through this connection, the ECU300 can precisely control the first valve 400 and the second valve 500, such as adjusting the valve opening based on parameters like engine operating status and temperature, thereby achieving efficient and stable operation of the entire system.

[0094] The cooling control system further includes: a first electronic water pump 700 and a second electronic water pump 800;

[0095] The first electronic water pump 700 is disposed between the engine block 600 and the first port of the first valve 400.

[0096] It should be understood that the first electric water pump 700 is positioned between the engine block 600 and the first port of the first valve 400. It is responsible for establishing an effective coolant transport channel between the engine block 600 and this specific port of the first valve 400, ensuring that the coolant flows along a predetermined path, thereby achieving effective cooling of the engine block 600 or providing necessary power support for the entire cooling cycle.

[0097] The second electronic water pump 800 is disposed between the third port of the first valve 400 and the first end of the water-cooled intercooler 200.

[0098] It should be noted that the second electronic water pump 800 is located between the third port of the first valve 400 and the first end of the water-cooled intercooler 200. This arrangement allows the second electronic water pump 800 to establish a stable coolant circulation path between the third port of the first valve 400 and the first end of the water-cooled intercooler 200. Its presence helps regulate the flow rate, pressure, and other parameters of the coolant flowing from the third port of the first valve 400, ensuring that it flows accurately into the first end of the water-cooled intercooler 200, thereby meeting the coolant requirements of the water-cooled intercooler 200 and ensuring that the water-cooled intercooler 200 can perform its cooling or other related functions normally.

[0099] In this embodiment, by controlling the flow rates of the dedicated low-temperature heat dissipation circuit and high-temperature cooling circuit of the water-cooled intercooler 200, the outlet temperature of the water-cooled intercooler 200 is rapidly increased to the optimal target temperature, avoiding the excessive generation of EGR condensation. This addresses the EGR condensation problem from a mechanistic perspective, ensuring reliable engine operation, achieving a higher EGR rate requirement, and reaching the goal of reducing fuel consumption.

[0100] Furthermore, this application also proposes a control method for a cooling control system. (Refer to...) Figure 4 , Figure 4 This is a flowchart illustrating a third embodiment of the control method for the cooling control system proposed in this application. The control method for the cooling control system includes:

[0101] Step S10: Obtain the ambient temperature value and the intake manifold temperature value;

[0102] Step S20: Based on the threshold range of the ambient temperature value and the intake manifold temperature value, open different ports of the first valve 400 and the second valve 500.

[0103] It should be understood that the threshold intervals include a first threshold interval, a second threshold interval, a third threshold interval, a fourth threshold interval, and a fifth threshold interval, corresponding to the first threshold interval, the second threshold interval, the third threshold interval, the fourth threshold interval, and the fifth threshold interval in the second embodiment.

[0104] It should be noted that when the ambient temperature value is within the first threshold range, the first port of the first valve 400 is closed, and the second and third ports of the first valve 400 are open; the first and second ports of the second valve 500 are open, and the third port of the second valve 500 is closed.

[0105] It should be understood that when the ambient temperature value is within the second threshold range, if the intake manifold temperature value is within the second threshold range or the third threshold range, the second port of the first valve 400 is closed, and the first and third ports of the first valve 400 are open; the first and third ports of the second valve 500 are open, and the second port of the second valve 500 is closed; if the intake manifold temperature value is within the fourth threshold range, the first port of the first valve 400 is closed, and the second and third ports of the first valve 400 are open; the first and second ports of the second valve 500 are open, and the third port of the second valve 500 is closed.

[0106] It should be noted that when the ambient temperature value is within the third threshold range, if the intake manifold temperature value is within the third threshold range, the second port of the first valve 400 is closed, and the first and third ports of the first valve 400 are open; the first and third ports of the second valve 500 are open, and the second port of the second valve 500 is closed; if the intake manifold temperature value is within the fourth threshold range, the first port of the first valve 400 is closed, and the second and third ports of the first valve 400 are open; the first and second ports of the second valve 500 are open, and the third port of the second valve 500 is closed.

[0107] It should be understood that when the ambient temperature value is in the fourth threshold range, if the intake manifold temperature value is in the fourth threshold range, the first port of the first valve 400 is closed, and the second and third ports of the first valve 400 are open; the first and second ports of the second valve 500 are open, and the third port of the second valve 500 is closed.

[0108] It should be noted that when the ambient temperature value is within the fifth threshold range, the EGR system function is turned off, the first port of the first valve 400 is closed, and the second and third ports of the first valve 400 are open; the first and second ports of the second valve 500 are open, and the third port of the second valve 500 is closed.

[0109] Step S30: Control the opening degree of the different ports according to the threshold range of the ambient temperature value and the intake manifold temperature value.

[0110] It should be understood that when the intake manifold temperature value is in the second threshold range, the opening degree of the first valve 400, the first port and the third port of the first valve 400, and the second valve 500 are all greater than the opening degree of the first valve 400 and the second valve 500 when the intake manifold temperature value is in the third threshold range.

[0111] It should be noted that step S30 specifically also includes:

[0112] Obtain the engine's outlet water temperature requirement;

[0113] When the outlet water temperature is greater than the outlet water temperature threshold, the opening degree of the second valve 500 is adjusted to the first opening degree; or,

[0114] When the outlet water temperature is not greater than the outlet water temperature threshold, the opening degree of the second valve 500 is adjusted to the second opening degree; wherein,

[0115] The first opening is smaller than the second opening.

[0116] Step S40: Control the flow rate of coolant flowing through the low-temperature radiator 100 and the water-cooled intercooler 200 according to the opening degree, and adjust the intake manifold temperature value by the flow rate of the coolant.

[0117] It should be noted that when the intake manifold temperature is in the second threshold range, the flow rate of coolant flowing through the first valve 400 and the second valve 500 is greater than the flow rate of coolant flowing through the first valve 400 and the second valve 500 when the intake manifold temperature is in the third threshold range.

[0118] This embodiment proposes a control method for a cooling control system. The control method includes: acquiring ambient temperature and intake manifold temperature; opening different ports of the first valve 400 and the second valve 500 according to the threshold range of the ambient temperature and intake manifold temperature; controlling the opening degree of the different ports according to the threshold range of the ambient temperature and intake manifold temperature; controlling the flow rate of coolant flowing through the low-temperature radiator 100 and the water-cooled intercooler 200 according to the opening degree, and adjusting the intake manifold temperature by adjusting the coolant flow rate. By introducing relatively high-temperature coolant from the engine cooling system into the independently operating low-temperature heat dissipation circuit of the water-cooled intercooler 200, and controlling the water flow rate through a proportional valve on the cooling pipe to control the coolant temperature of the water-cooled intercooler 200, the optimal intake manifold temperature is achieved under different ambient temperatures. This avoids misfires caused by condensation, enables EGR to be applied within its maximum operating range and at a higher EGR rate, effectively reduces fuel consumption, and improves operational reliability.

[0119] Furthermore, this application also proposes a vehicle including the cooling control system described above, or including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement a control method for the cooling control system described above.

[0120] Since the vehicle adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be repeated here.

[0121] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or system. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or system that includes that element.

[0122] The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A cooling control system, characterized in that, The cooling control system includes: a low-temperature radiator, a water-cooled intercooler, an ECU, a first valve, and a second valve; The first valve, the low-temperature radiator, the second valve, and the water-cooled intercooler are connected in sequence to form a low-temperature heat dissipation circuit; The first valve, the water-cooled intercooler, the second valve, and the engine block are sequentially connected to form a high-temperature cooling circuit; The ECU is connected to the first valve and the second valve respectively; The ECU is used to switch different ports of the first valve and the second valve according to the threshold range of the ambient temperature value and the intake manifold temperature value. The ECU is also used to control the opening degree of the different ports according to the threshold range of the ambient temperature value and the intake manifold temperature value. The first / second valve is used to control the flow rate of coolant flowing through the low-temperature radiator and the water-cooled intercooler according to the opening degree; The low-temperature radiator is used to dissipate heat from the coolant in the low-temperature heat dissipation circuit; The water-cooled intercooler is used to regulate the intake manifold temperature using the coolant. The threshold intervals include a first threshold interval, a second threshold interval, a third threshold interval, a fourth threshold interval, and a fifth threshold interval; The ECU is also used to activate the low-temperature heat dissipation circuit when the ambient temperature value is within the first threshold range; The ECU is further configured to, when the ambient temperature value is in the second threshold range, activate the high-temperature cooling circuit if the intake manifold temperature value is in the second threshold range or the third threshold range; and activate the low-temperature heat dissipation circuit if the intake manifold temperature value is in the fourth threshold range. The ECU is further configured to, when the ambient temperature value is within the third threshold range, activate the high-temperature cooling circuit if the intake manifold temperature value is within the third threshold range; and activate the low-temperature heat dissipation circuit if the intake manifold temperature value is within the fourth threshold range. The ECU is also used to activate the low-temperature heat dissipation circuit when the ambient temperature value is in the fourth threshold range and the intake manifold temperature value is in the fourth threshold range. The ECU is also used to disable the EGR system and activate the low-temperature heat dissipation circuit when the ambient temperature value is within the fifth threshold range.

2. The cooling control system according to claim 1, characterized in that, The first valve and the second valve are proportional valves; The first port of the first valve is connected to the first end of the engine block, the second port of the first valve is connected to the first end of the low-temperature radiator, and the third port of the first valve is connected to the first end of the water-cooled intercooler. The first port of the second valve is connected to the second end of the water-cooled intercooler, the second port of the second valve is connected to the second end of the low-temperature radiator, and the third port of the second valve is connected to the second end of the engine block. The ECU is connected to the fourth port of the first valve and the fourth port of the second valve, respectively.

3. The cooling control system according to claim 2, characterized in that, The cooling control system also includes: a first electronic water pump and a second electronic water pump; The first electronic water pump is disposed between the engine block and the first port of the first valve; The second electronic water pump is located between the third port of the first valve and the first end of the water-cooled intercooler.

4. A control method for a cooling control system, characterized in that, The control method of the cooling control system is applied to the cooling control system according to any one of claims 1 to 3, characterized in that the control method of the cooling control system includes: Obtain ambient temperature and intake manifold temperature values; Based on the threshold range of the ambient temperature value and the intake manifold temperature value, different ports of the first valve and the second valve are activated; The opening degree of the different ports is controlled according to the threshold range of the ambient temperature value and the intake manifold temperature value. The flow rate of coolant flowing through the low-temperature radiator and the water-cooled intercooler is controlled according to the opening degree, and the intake manifold temperature is adjusted by the flow rate of the coolant.

5. The control method of the cooling control system according to claim 4, characterized in that, The threshold range includes a first threshold range, a second threshold range, a third threshold range, a fourth threshold range, and a fifth threshold range; the step of activating different ports of the first valve and the second valve according to the threshold ranges where the ambient temperature value and the intake manifold temperature value fall includes at least one of the following: When the ambient temperature is within a first threshold range, the first port of the first valve is closed, and the second and third ports of the first valve are open; the first and second ports of the second valve are open, and the third port of the second valve is closed. When the ambient temperature is within the second threshold range, if the intake manifold temperature is within the second threshold range or the third threshold range, the second port of the first valve is closed, and the first and third ports of the first valve are open; the first and third ports of the second valve are open, and the second port of the second valve is closed; if the intake manifold temperature is within the fourth threshold range, the first port of the first valve is closed, and the second and third ports of the first valve are open; the first and second ports of the second valve are open, and the third port of the second valve is closed. When the ambient temperature is within the third threshold range, if the intake manifold temperature is within the third threshold range, the second port of the first valve is closed, and the first and third ports of the first valve are open; the first and third ports of the second valve are open, and the second port of the second valve is closed; if the intake manifold temperature is within the fourth threshold range, the first port of the first valve is closed, and the second and third ports of the first valve are open; the first and second ports of the second valve are open, and the third port of the second valve is closed. When the ambient temperature value is within the fourth threshold range, if the intake manifold temperature value is within the fourth threshold range, the first port of the first valve is closed, and the second and third ports of the first valve are open; the first and second ports of the second valve are open, and the third port of the second valve is closed. When the ambient temperature value is within the fifth threshold range, the EGR system function is turned off, the first port of the first valve is closed, and the second and third ports of the first valve are open; the first and second ports of the second valve are opened, and the third port of the second valve is closed.

6. The control method of the cooling control system according to claim 5, characterized in that, The step of controlling the opening degree of different ports based on the threshold range of the ambient temperature value and the intake manifold temperature value includes: When the intake manifold temperature is in the second threshold range, the opening degree of the first valve, the first port and the third port of the first valve, and the second valve are all greater than the opening degree of the first valve and the second valve when the intake manifold temperature is in the third threshold range.

7. The control method for the cooling control system according to claim 5, characterized in that, The step of controlling the flow rate of coolant through the low-temperature radiator and the water-cooled intercooler according to the opening degree, and adjusting the intake manifold temperature value by means of the coolant flow rate, includes: When the intake manifold temperature is in the second threshold range, the flow rate of coolant flowing through the first valve and the second valve is greater than the flow rate of coolant flowing through the first valve and the second valve when the intake manifold temperature is in the third threshold range.

8. The control method of the cooling control system according to claim 5, characterized in that, The step of controlling the opening degree of different ports based on the threshold range of the ambient temperature value and the intake manifold temperature value further includes: Obtain the engine's outlet water temperature requirement; When the outlet water temperature is greater than the outlet water temperature threshold, the opening degree of the second valve is adjusted to the first opening degree; or, When the outlet water temperature is not greater than the outlet water temperature threshold, the opening degree of the second valve is adjusted to the second opening degree; wherein, The first opening is smaller than the second opening.

9. A vehicle, characterized in that, The cooling control system includes any one of claims 1 to 3, or includes a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the control method of the cooling control system according to any one of claims 4 to 8.

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