A low-temperature protection system and method for coolant radiators

Abstract

This invention discloses a low-temperature protection system and method for a coolant radiator, belonging to the field of radiator technology. The system includes an engine, a thermostat, a coolant radiator, a sensor, a controller, a flow regulating valve, and a bypass water circuit. The engine is connected to the thermostat and the coolant radiator to form a coolant circulation loop. The controller is used to determine the engine coolant temperature, ambient temperature, and thermostat opening temperature, and output a control signal. The thermostat is used to adjust the coolant circulation loop according to the control signal output by the controller. The bypass water circuit is used to control a portion of the high-temperature coolant to preheat the coolant radiator. The flow regulating valve is used to control the flow rate of coolant in the bypass water circuit. This invention preheats the coolant radiator through the bypass water circuit, preventing alternating hot and cold conditions and reducing the failure rate of the coolant radiator.

Description

Technical Field

[0001] This invention relates to a low-temperature protection system and method for coolant radiators, belonging to the field of radiator technology. Background Technology

[0002] In winter or cold regions, the temperature of the water chamber inside the radiator is almost the same as the ambient temperature before the main circulation is turned on. After the main circulation is turned on, the temperature difference between the coolant and the water chamber inside the radiator is large. The radiator is subjected to thermal shock from the high temperature of the coolant, which often leads to cracking and leakage problems. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a low-temperature protection system and method for coolant radiators. By using a bypass water circuit to preheat the coolant radiator, it prevents alternating hot and cold conditions and reduces the market failure rate of coolant radiators.

[0004] To achieve the above objectives, the present invention is implemented using the following technical solution:

[0005] In a first aspect, the present invention provides a low-temperature protection system for a coolant radiator, comprising:

[0006] An engine, which is connected to a thermostat and a coolant radiator to form a coolant circulation loop;

[0007] The coolant radiator is used to cool the hot coolant flowing out of the engine and return it to the engine.

[0008] Sensors are used to collect engine coolant temperature, ambient temperature, and thermostat opening temperature;

[0009] The controller is used to analyze and judge based on engine coolant temperature, ambient temperature, and thermostat opening temperature, and output control signals according to the set logic.

[0010] Thermostat is used to regulate the coolant circulation loop according to the control signal output by the controller;

[0011] A bypass water path, which is connected in parallel to the circulation loop, is used to transport a portion of the high-temperature coolant flowing out of the engine to the coolant radiator for preheating.

[0012] The flow regulating valve is used to adjust the flow rate according to the control signal output by the controller, thereby controlling the flow rate of coolant in the bypass water circuit.

[0013] Furthermore, the controller is specifically used to: adjust the opening of the flow regulating valve according to different ambient temperatures and coolant temperatures to control the flow of coolant at different rates through the bypass water path.

[0014] Furthermore, the controller is specifically used for:

[0015] The engine coolant temperature T collected by the receiving sensor 水 Ambient temperature T 环 Thermostat opening temperature T 节 ;

[0016] When T is satisfied 环 ≤T1 and T2≤T 水 ≤T 节 When the flow is controlled, a control signal is output to the flow regulating valve to make the flow regulating valve work, the bypass water circuit is opened, and a portion of the high-temperature coolant is controlled to preheat the coolant radiator through the bypass water circuit.

[0017] When T is not satisfied 环 ≤T1 and T2≤T 水 ≤T 节 At this time, the thermostat begins to open, and the controller outputs a control signal to disable the flow regulating valve and close the bypass water circuit;

[0018] Where T1 is the set ambient reference temperature value; T2 is the set coolant reference temperature value.

[0019] Furthermore, the flow regulating valve is an opening valve or an electronic thermostat.

[0020] Furthermore, one end of the bypass water path is connected to the water path between the engine water jacket and the coolant radiator, and the other end is connected to the water path before the engine water jacket or coolant radiator. Here, the water path refers to the coolant passage through which the engine flows through the coolant radiator and back to the engine.

[0021] Furthermore, a water pump is provided in the circulation loop to ensure that the coolant circulates in the cooling system.

[0022] Secondly, the present invention provides a protection method for a coolant radiator low-temperature protection system according to any one of the preceding claims, applicable to a controller, comprising: adjusting the opening of a flow regulating valve according to different ambient temperatures and coolant temperatures to control different flow rates of coolant through a bypass water path.

[0023] Furthermore, the step of adjusting the opening of the flow regulating valve according to different ambient temperatures and coolant temperatures to control the flow of coolant through the bypass water path at different rates specifically includes:

[0024] Receive engine coolant temperature T 水 Ambient temperature T 环 Thermostat opening temperature T 节 ;

[0025] When T is satisfied环 ≤T1 and T2≤T 水 ≤T 节 At this time, the output control signal makes the flow regulating valve work, the bypass water circuit opens, and the control part of the high temperature coolant is preheated to the coolant radiator through the bypass water circuit;

[0026] When T is not satisfied 环 ≤T1 and T2≤T 水 ≤T 节 At this time, the thermostat begins to open, outputting a control signal to disable the flow regulating valve and close the bypass water circuit;

[0027] Where T1 is the set ambient reference temperature value; T2 is the set coolant reference temperature value.

[0028] Thirdly, the present invention provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of any of the methods described above.

[0029] Fourthly, the present invention provides a computer device, comprising:

[0030] Memory, used to store computer programs / instructions;

[0031] A processor for executing the computer program / instructions to implement the steps of any of the methods described above.

[0032] Compared with the prior art, the beneficial effects achieved by the present invention are as follows:

[0033] This invention provides a low-temperature protection system and method for coolant radiators. A bypass water path is connected in parallel outside the main circulation loop. The bypass water path controls a portion of the high-temperature coolant to preheat the coolant radiator. The flow rate of coolant through the bypass water path is controlled according to different ambient temperatures and coolant temperatures to prevent alternating hot and cold conditions and reduce the failure rate of coolant radiators. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of a low-temperature protection system for a coolant radiator provided in an embodiment of the present invention;

[0035] Figure 2 This is a system schematic diagram of a low-temperature protection system for a coolant radiator provided in an embodiment of the present invention. Detailed Implementation

[0036] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and should not be used to limit the scope of protection of the present invention.

[0037] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are used only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0038] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0039] Example 1, as Figure 1 As shown in the figure, this embodiment introduces a low-temperature protection system for a coolant radiator, including:

[0040] An engine, which is connected to a thermostat and a coolant radiator to form a coolant circulation loop;

[0041] The coolant radiator is used to cool the hot coolant flowing out of the engine and return it to the engine.

[0042] Sensors are used to collect engine coolant temperature, ambient temperature, and thermostat opening temperature;

[0043] The controller is used to analyze and judge based on engine coolant temperature, ambient temperature, and thermostat opening temperature, and output control signals according to the set logic.

[0044] Thermostat is used to regulate the coolant circulation loop according to the control signal output by the controller;

[0045] A bypass water path, which is connected in parallel to the circulation loop, is used to transport a portion of the high-temperature coolant flowing out of the engine to the coolant radiator for preheating.

[0046] The flow regulating valve is used to adjust the flow rate according to the control signal output by the controller, thereby controlling the flow rate of coolant in the bypass water circuit.

[0047] The following description, in conjunction with a preferred embodiment, illustrates the content involved in the above embodiments.

[0048] like Figure 1 As shown, the coolant radiator low-temperature protection system provided in this embodiment mainly consists of an engine, thermostat, coolant radiator, controller, water circuit, water pump, flow regulating valve, etc. A bypass water circuit is connected in parallel outside the main circulation circuit. The bypass water circuit controls a portion of the high-temperature coolant to preheat the coolant radiator. The coolant flow rate is controlled according to different ambient temperatures and coolant temperatures to prevent cracking and leakage caused by thermal shock due to the large temperature difference between the water chamber inside the coolant radiator and the coolant when the main circulation circuit is open.

[0049] Engine: The engine generates heat, which is carried away by the coolant flowing through the engine's water jacket;

[0050] Thermostat: The thermostat is installed in the coolant circulation path (usually at the outlet of the cylinder head). It changes the water circulation path according to the control signal output by the controller based on the engine coolant temperature, so as to adjust the cooling intensity of the cooling system.

[0051] Coolant radiator: Cools and lowers the engine's water temperature through the engine's main circulation loop;

[0052] Controller: It makes judgments based on engine coolant temperature, ambient temperature, and thermostat opening temperature, and outputs PWM signals to actuators such as flow control valves according to the logic settings.

[0053] Waterway: In this invention, it refers to the coolant passage through which the engine flows through the radiator and back to the engine;

[0054] Water pump: Ensures that the coolant circulates in the cooling system;

[0055] Flow regulating valve: This invention refers to adjusting the flow rate according to the signal sent by the controller, thereby realizing the flow rate of the bypass water coolant; the flow regulating valve is an opening valve or an electronic thermostat; using an electronic thermostat can more accurately control the water flow rate.

[0056] Implementation method: such as Figure 2 As shown, when implementing this example, a cooling system and controller communication are required:

[0057] Set the ambient reference temperature value T1, and the coolant reference temperature value T2.

[0058] Sensor collects engine coolant temperature T 水Ambient temperature T 环 ;

[0059] The controller is based on the engine coolant temperature T. 水 Ambient temperature T 环 Thermostat opening temperature T 节 Make a judgment:

[0060] When T is satisfied 环 ≤T1 and T2≤T 水 ≤T 节 hour;

[0061] At this time, the thermostat is not open. The controller outputs the set signal to the actuators such as the opening valve. The actuators such as the opening valve work, the bypass water circuit opens and intervenes. The high temperature coolant in the bypass water circuit control section preheats the coolant radiator. The controller sends different signals to the actuators according to different ambient temperatures and coolant temperatures to control different flow rates of coolant.

[0062] When T is not satisfied 环 ≤T1 and T2≤T 水 ≤T 节 hour;

[0063] At this time, the thermostat begins to open, and the controller outputs the set signal to the actuators such as the opening valve. The actuators such as the opening valve do not work, and the bypass water circuit is closed.

[0064] The term "large circulation" refers to the following: when the engine thermostat is open, the water in the cooling system's water jacket is cooled by the radiator and then pumped back to the water jacket.

[0065] Example 2: This example provides a protection method for a coolant radiator low-temperature protection system according to any one of Examples 1, applicable to a controller, including:

[0066] Adjusting the opening of the flow control valve according to different ambient temperatures and coolant temperatures controls the flow of coolant through the bypass water path at different rates. Specifically, this includes:

[0067] Receive engine coolant temperature T 水 Ambient temperature T 环 Thermostat opening temperature T 节 ;

[0068] When T is satisfied 环 ≤T1 and T2≤T 水 ≤T 节 At this time, the output control signal makes the flow regulating valve work, the bypass water circuit opens, and the control part of the high temperature coolant is preheated to the coolant radiator through the bypass water circuit;

[0069] When T is not satisfied 环≤T1 and T2≤T 水 ≤T 节 At this time, the thermostat begins to open, outputting a control signal to disable the flow regulating valve and close the bypass water circuit;

[0070] Where T1 is the set ambient reference temperature value; T2 is the set coolant reference temperature value.

[0071] Example 3: This example provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of any of the methods described in Example 2.

[0072] Example 4: This example provides a computer device, including:

[0073] Memory, used to store computer programs / instructions;

[0074] A processor for executing the computer program / instructions to implement the steps of any of the methods described in Embodiment 2.

[0075] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

[0076] Those skilled in the art will understand that embodiments of this disclosure can be provided as methods, systems, or computer program products. Therefore, this disclosure can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this disclosure can take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0077] This disclosure is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this disclosure. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create a machine for implementing the flowchart illustrations and / or block diagrams. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0078] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0079] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0080] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure and not to limit its protection scope. Although this disclosure has been described in detail with reference to the above embodiments, those skilled in the art should understand that after reading this disclosure, they can still make various changes, modifications or equivalent substitutions to the specific implementation of the invention, but these changes, modifications or equivalent substitutions are all within the protection scope of the pending claims.

Claims

1. A low-temperature protection system for a coolant radiator, characterized in that, include: An engine, which is connected to a thermostat and a coolant radiator to form a coolant circulation loop; The coolant radiator is used to cool the hot coolant flowing out of the engine and return it to the engine. Sensors are used to collect engine coolant temperature, ambient temperature, and thermostat opening temperature; The controller is used to analyze and judge based on engine coolant temperature, ambient temperature, and thermostat opening temperature, and output control signals according to the set logic. Thermostat is used to regulate the coolant circulation loop according to the control signal output by the controller; A bypass water path, which is connected in parallel to the circulation loop, is used to transport a portion of the high-temperature coolant flowing out of the engine to the coolant radiator for preheating. The flow regulating valve is used to adjust the flow rate according to the control signal output by the controller, thereby controlling the flow rate of coolant in the bypass water circuit.

2. The low-temperature protection system for coolant radiators according to claim 1, characterized in that, The controller is specifically used to: adjust the opening of the flow regulating valve according to different ambient temperatures and coolant temperatures to control the flow of coolant at different rates through the bypass water path.

3. The low-temperature protection system for coolant radiators according to claim 2, characterized in that, The controller is specifically used for: The engine coolant temperature T collected by the receiving sensor 水 Ambient temperature T 环 Thermostat opening temperature T 节 ; When T is satisfied 环 ≤T1 and T2≤T 水 ≤T 节 When the flow regulation valve is activated, a control signal is output to the flow regulation valve to activate it, opening the bypass water circuit and controlling a portion of the high-temperature coolant to preheat the coolant radiator through the bypass water circuit. When T is not satisfied 环 ≤T1 and T2≤T 水 ≤T 节 At this time, the thermostat begins to open, and the controller outputs a control signal to disable the flow regulating valve and close the bypass water circuit; Where T1 is the set ambient reference temperature value; T2 is the set coolant reference temperature value.

4. The low-temperature protection system for coolant radiators according to claim 1, characterized in that, The flow regulating valve is an opening valve or an electronic thermostat.

5. The low-temperature protection system for coolant radiators according to claim 1, characterized in that, One end of the bypass water path is connected to the water path between the engine water jacket and the coolant radiator, and the other end is connected to the water path before the engine water jacket or coolant radiator. The water path refers to the coolant passage through which the engine flows through the coolant radiator and back to the engine.

6. The low-temperature protection system for coolant radiators according to claim 1, characterized in that, The circulation loop is equipped with a water pump to ensure that the coolant circulates in the cooling system.

7. A protection method for a low-temperature protection system for a coolant radiator according to claim 1, applicable to a controller, characterized in that, include: Adjust the opening of the flow control valve according to different ambient temperatures and coolant temperatures to control the flow of coolant through the bypass water path at different rates.

8. The protection method according to claim 7, characterized in that, The method of adjusting the opening of the flow regulating valve according to different ambient temperatures and coolant temperatures to control the flow of coolant through the bypass water path at different rates specifically includes: Receive engine coolant temperature T 水 Ambient temperature T 环 Thermostat opening temperature T 节 ; When T is satisfied 环 ≤T1 and T2≤T 水 ≤T 节 At this time, the output control signal makes the flow regulating valve work, the bypass water circuit opens, and the control part of the high temperature coolant is preheated to the coolant radiator through the bypass water circuit; When T is not satisfied 环 ≤T1 and T2≤T 水 ≤T 节 At this time, the thermostat begins to open, outputting a control signal to disable the flow regulating valve and close the bypass water circuit; Where T1 is the set ambient reference temperature value; T2 is the set coolant reference temperature value.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that: When executed by a processor, the program implements the steps of the method described in any one of claims 7-8.

10. A computer device, characterized in that, include: Memory, used to store computer programs / instructions; A processor for executing the computer program / instructions to implement the steps of the method according to any one of claims 7-8.

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