A method and system for early warning of radiator lifespan

Abstract

This invention belongs to the field of radiator application technology for engineering machinery. Based on statistical data from actual operating conditions, it proposes a radiator lifespan early warning method and system. The early warning method includes: acquiring the thermostat opening temperature, the coolant temperature in the radiator's upper water chamber, and the thermostat opening duration each time the engine thermostat opens; for each thermostat opening, determining the lifespan loss value caused by a single thermal shock based on the difference between the thermostat opening temperature and the coolant temperature in the radiator's upper water chamber, and the thermostat opening duration; accumulating the lifespan loss values ​​generated by each thermostat opening to obtain a cumulative lifespan loss value; and triggering an early warning when the cumulative lifespan loss value reaches a preset threshold.

Description

Technical Field

[0001] This invention belongs to the field of radiator application technology for engineering machinery. Based on actual working condition statistics, it proposes a radiator lifespan early warning method and system. Background Technology

[0002] During the initial startup of construction machinery, the engine is at room temperature. At this time, the paraffin wax in the thermostat is solid, and the valve is pressed against the valve seat. The valve closes the water passage to the radiator, and the coolant from the engine cylinder head outlet flows back to the cylinder block water jacket via the water pump, forming a small circulation. As the engine coolant temperature rises, the paraffin wax gradually liquefies, increasing in volume, and the thermostat valve opens. When the engine coolant temperature reaches above 80°C, the thermostat valve gradually opens, and the coolant from the cylinder head outlet flows to the radiator, forming a large circulation.

[0003] When the engine thermostat initially opens, coolant enters the radiator's upper chamber, where the coolant temperature is the same as the ambient temperature. The coolant temperature inside the engine block is significantly higher than that in the upper chamber, causing thermal shock. The radiator has a limit on the number of thermal shocks it can withstand; exceeding this limit can lead to cracking at the connection between the upper chamber and the radiator core due to the thermal shock. This failure is caused by thermal cycle stress. Simultaneously, low-temperature coolant flows into the engine block from the radiator. If the coolant temperature is too low, the thermostat will close again, entering a smaller circulation loop. Once the coolant temperature inside the engine block reaches the thermostat's opening temperature, high-temperature coolant enters the radiator's upper chamber, causing another thermal shock.

[0004] Furthermore, in extremely cold regions or during winter, the engine thermostat opens more frequently, resulting in a high frequency of thermal shocks. Low ambient temperatures exacerbate the concentration and accumulation of thermal shock stress, leading to frequent failures. Currently, there are no proactive warning mechanisms in the technology to anticipate the impact of varying degrees of thermal shock on radiator lifespan. Summary of the Invention

[0005] The purpose of this invention is to provide a radiator lifespan early warning method and system. The method counts the number of times the thermostat opens, and collects the thermostat opening temperature and the coolant temperature in the radiator's upper water chamber each time the thermostat opens. The lifespan loss value of a single thermal shock is determined by combining the temperature difference between the two and the opening duration of the thermostat. The lifespan loss value of the thermostat is accumulated by the lifespan loss value of multiple thermostat openings to obtain the lifespan loss accumulation value. The lifespan loss accumulation value is used as the trigger for lifespan early warning, thereby achieving the purpose of timely warning and replacement when the radiator lifespan loss is serious to ensure safe use.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] In a first aspect, the present invention provides a method for predicting the lifespan of a radiator, comprising:

[0008] Each time the engine thermostat opens, the thermostat opening temperature, the coolant temperature in the radiator upper chamber, and the duration of the thermostat opening are obtained.

[0009] For each opening of the thermostat, the life loss value caused by a single thermal shock is determined based on the difference between the thermostat opening temperature and the coolant temperature in the radiator upper water chamber, as well as the duration of the thermostat opening.

[0010] The life loss value generated each time the thermostat is opened is accumulated to obtain the life loss accumulation value.

[0011] An early warning is triggered when the accumulated lifespan loss value reaches a preset threshold.

[0012] Optionally, the formula for calculating the lifetime loss value is:

[0013] △T=T 节 - T 散

[0014] S n =f (△T n , t n )

[0015] In the formula, △T represents the difference between the thermostat opening temperature and the coolant temperature in the radiator's upper water chamber, T 节 Indicates the thermostat opening temperature, T 散 This indicates the coolant temperature in the radiator's upper water chamber, n indicates the number of times the thermostat opens, and S... n ΔT represents the lifespan loss caused by a single thermal shock when the thermostat opens for the nth time. n t represents the difference between the thermostat opening temperature and the coolant temperature in the radiator upper water chamber when the thermostat opens for the nth time. n This indicates the duration of the thermostat's opening and closing during the nth time.

[0016] Optionally, the formula for calculating the accumulated lifespan loss value by sequentially accumulating the lifespan loss value generated each time the thermostat is opened is as follows:

[0017] S m =S1+S2+S3+S4+……+S n

[0018] In the formula, S m This represents the accumulated value of lifespan loss.

[0019] Optionally, the method further includes:

[0020] Obtain the coolant temperature at the engine thermostat;

[0021] If the coolant temperature at the engine thermostat is equal to the coolant temperature in the radiator's upper water chamber and the thermostat fails to close within a preset time, the thermostat opening count will stop and the accumulation of lifespan loss value will cease.

[0022] Optionally, the method further includes:

[0023] The difference between the thermostat opening temperature and the coolant temperature in the radiator's upper water chamber is divided into multiple intervals, and a corresponding weighting coefficient is set for each interval.

[0024] For each opening of the thermostat, the weighting coefficient of the life loss value caused by the thermal shock is determined according to the range of the difference between the thermostat opening temperature and the coolant temperature in the radiator upper water chamber.

[0025] The accumulated lifespan loss value is obtained by weighted summing of the lifespan loss values ​​generated each time the thermostat is opened.

[0026] Optionally, the higher the range of the difference between the thermostat opening temperature and the coolant temperature in the radiator's upper water chamber, the larger the corresponding weighting coefficient.

[0027] Optionally, the plurality of intervals include (0,10], (10,20], (20,30], (30,40], (40,50], (50,60], (60,70], (70,80], (80,90], and (90,100], and the unit of the boundary value of each interval is ℃.

[0028] Optionally, the method further includes:

[0029] The difference between the thermostat opening temperature and the coolant temperature in the radiator's upper water chamber is divided into multiple intervals, and a corresponding second weighting coefficient is set for each interval.

[0030] The second life loss accumulation value is determined based on the number of times the difference between the thermostat opening temperature and the coolant temperature in the radiator upper water chamber belongs to each interval and the second weighting coefficient of each interval.

[0031] An early warning is triggered when the second accumulated lifespan loss value reaches the corresponding preset threshold.

[0032] Optionally, the formula for calculating the second lifetime loss accumulation value is: In the formula, S a A represents the accumulated value of the second lifetime loss. i This represents the second weight coefficient corresponding to the i-th interval. N iThis indicates the number of times the thermostat opens when the difference between the thermostat opening temperature and the coolant temperature in the radiator's upper water chamber belongs to the i-th interval.

[0033] In a second aspect, the present invention provides a radiator lifespan early warning system, comprising:

[0034] The acquisition module is used to acquire the thermostat opening temperature, the coolant temperature in the radiator's upper water chamber, and the thermostat opening duration each time the thermostat of the radiator is opened.

[0035] The determination module is used to determine the life loss value caused by a single thermal shock for each opening of the thermostat, based on the difference between the thermostat opening temperature and the coolant temperature in the radiator upper water chamber, as well as the opening duration of the thermostat.

[0036] The accumulation module is used to accumulate the life loss value generated each time the thermostat is opened to obtain the life loss accumulation value.

[0037] The early warning module is used to trigger an early warning when the accumulated lifespan loss value reaches a preset threshold.

[0038] Compared with the prior art, the present invention has the following beneficial effects:

[0039] This invention counts the number of times the thermostat opens, and estimates the life loss value caused by a single thermal shock by using the difference between the thermostat opening temperature and the coolant temperature in the radiator's upper water chamber, as well as the duration of the thermostat opening, each time the thermostat opens. The accumulated life loss value is then used as a basis for judging the life loss warning, so that a warning can be issued in time when the life loss is severe and the radiator can be replaced in advance, thereby ensuring the safe operation of the radiator. Attached Figure Description

[0040] Figure 1 This is a flowchart illustrating a radiator lifespan warning method in Example 1.

[0041] Figure 2 This is a schematic diagram of an engineering machine used in the radiator life warning method described in Example 1. Detailed Implementation

[0042] 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. 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.

[0043] In the prior art known to the inventors of this application, thermostats open more frequently during the early stages of equipment startup in extremely cold regions, resulting in a high frequency of thermal shocks. Therefore, the lower the ambient temperature, the more severe the impact of a single thermal shock. As thermal strain concentrates and accumulates, it accelerates the occurrence of radiator cracking failures, typically located near the engine outlet pipe in the upper water chamber of the radiator.

[0044] 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.

[0045] Example 1

[0046] Combination Figure 1 This embodiment provides a radiator lifespan warning method, which includes: step S1, acquiring the thermostat opening temperature, the coolant temperature in the radiator upper water chamber, and the thermostat opening duration each time the engine thermostat is opened.

[0047] Specifically, the early warning method of this embodiment is applied to a type of construction machinery. The machinery includes an upper water chamber temperature sensor, an engine water temperature sensor, a vehicle controller, a remote service platform, and a spare parts procurement platform, used to implement the early warning function. The thermostat opening temperature and the coolant temperature in the radiator's upper water chamber are both detected and collected by the sensors. Regarding the coolant, its purpose is to dissipate heat generated during engine operation by flowing through the engine's water jacket. The thermostat, installed in the coolant circulation path (usually at the cylinder head outlet), automatically adjusts the water circulation path (switching between small and large circulation loops) based on the engine coolant temperature to regulate the cooling intensity of the cooling system. The radiator cools the engine coolant through the large circulation loop. Simultaneously, the water pump ensures the coolant circulates throughout the cooling system. Specifically, the small circulation loop refers to the coolant in the engine water jacket flowing back to the cylinder block water jacket via the water pump, essentially a cooling circulation within the engine. The large circulation loop occurs when the thermostat is open, allowing the engine coolant to flow through the thermostat to the radiator, and then back to the engine water jacket for the large circulation loop. The thermostat opening / closing counter tracks the number of times the thermostat opens and closes, counting the number of times the radiator's thermostat opens. When T... 发 < T 节 When the thermostat is closed, the engine coolant only circulates in a small loop, and the radiator is not subjected to thermal shock. The coolant in the small loop does not pass through the radiator, while the coolant in the large loop does. Specifically, when T... 发 ≥ T 节 When the thermostat opens, engine coolant enters the main circulation loop. High-temperature coolant enters the radiator, at which point the radiator experiences a thermal shock. Low-temperature coolant from the radiator enters the engine, causing the engine coolant temperature to drop below the thermostat opening temperature (T). 节 The thermostat closes, and the engine coolant begins a small circulation cycle again. When the engine coolant temperature rises above the thermostat opening temperature T again... 节 At this time, the coolant re-enters the main circulation loop, and the radiator is subjected to thermal shock. This process repeats until the engine thermostat opening temperature is equivalent to the coolant temperature inside the radiator, after which the thermostat remains open. The warning method in this embodiment mainly targets the lifespan loss caused by thermal shock when the thermostat opens during the main circulation loop. The number of times the thermostat opens can be used to characterize the number of thermal shocks the radiator has experienced. The warning method in this embodiment is based on the vehicle controller: the vehicle controller collects the number of times the thermostat opens and the corresponding coolant temperature in the upper radiator chamber, calculates and evaluates the remaining lifespan of the radiator to withstand thermal shock according to preset logic, and sends the warning information to a remote intelligent platform. The specific logic calculation method is as follows.

[0048] Step S2: For each opening of the thermostat, determine the life loss value caused by a single thermal shock based on the difference between the thermostat opening temperature and the coolant temperature in the radiator upper water chamber and the opening duration of the thermostat.

[0049] In one specific embodiment, the formula for calculating the lifetime loss value is:

[0050] △T=T 节 - T 散

[0051] S n =f (△T n , t n )

[0052] In the formula, △T represents the difference between the thermostat opening temperature and the coolant temperature in the radiator's upper water chamber, T 节 Indicates the thermostat opening temperature, T 散 This indicates the coolant temperature in the radiator's upper water chamber, n indicates the number of times the thermostat opens, and S... n ΔT represents the lifespan loss caused by thermal shock when the thermostat opens for the nth time. n t represents the difference between the thermostat opening temperature and the coolant temperature in the radiator upper water chamber when the thermostat opens for the nth time. n This indicates the duration of the thermostat's opening and closing for the nth time, in seconds or minutes.

[0053] In this embodiment, the life loss value is obtained based on model calculation. The pre-built single thermal shock life loss analysis model is trained based on historical operating data to obtain the life loss value S caused by a single thermal shock. n With △T n t n The relational function, namely S n =f(△T n ,t n For example, S1 = f(△T1, t1) represents the life loss due to the first thermal shock. After model training, based on the current operating data (the difference between the thermostat opening temperature and the coolant temperature in the radiator's upper water chamber, and the time from thermostat opening to closing), the life loss value S caused by each single thermal shock can be calculated. n The unit is h (hours). Where n represents the nth thermal shock, that is, n is equal to the number of times the thermostat opens, and the value of n ranges from 1, 2, 3...

[0054] And, when T 散 =T 发If the thermostat fails to close after a preset time t0 minutes, it indicates that the equipment has basically entered a state of thermal equilibrium. The radiator is no longer subjected to thermal shock, the count of thermostat opening times stops, and the accumulation of lifespan loss also stops.

[0055] Step S3: Accumulate the lifespan loss value generated each time the thermostat is opened to obtain the accumulated lifespan loss value; the formula for calculating the accumulated lifespan loss value is: S m =S1+S2+S3+S4+……+S n； In the formula, S m S represents the accumulated value of lifetime loss. n This represents the lifespan loss caused by thermal shock when the thermostat is opened for the nth time.

[0056] In another specific embodiment, the difference between the thermostat opening temperature and the coolant temperature in the radiator's upper water chamber is divided into multiple intervals, including (0,10], (10,20], (20,30], (30,40], (40,50], (50,60], (60,70], (70,80], (80,90], and (90,100], with the boundary values ​​of each interval in °C. A corresponding weighting coefficient is assigned to each interval. For each opening of the thermostat, the weighting coefficient for the lifespan loss value is determined based on the interval to which the difference between the thermostat opening temperature and the coolant temperature in the radiator's upper water chamber belongs. The lifespan loss value generated by each thermostat opening is weighted and summed to obtain the accumulated lifespan loss value. The higher the interval to which the difference between the thermostat opening temperature and the coolant temperature in the radiator's upper water chamber belongs, the larger the corresponding weighting coefficient. That is, in the calculation formula for the accumulated lifespan loss value, S1, S2, S3…, S… n Each value is multiplied by a corresponding weighting coefficient for summation. This weighting coefficient is determined based on the range of the difference between the thermostat opening temperature and the coolant temperature in the radiator's upper water chamber. In this embodiment, the weighted summation method enables the calculation result of the accumulated lifespan loss value to be more in line with reality and reflect the actual situation.

[0057] Step S4: When the accumulated lifespan loss value reaches a preset threshold, an early warning is triggered. The specific value of the preset threshold can be set according to the actual situation. Usually, the early warning is sent to the remote service platform. Upon receiving the early warning, the remote service platform issues an instruction to the spare parts procurement platform to purchase reserve radiators.

[0058] In another specific embodiment, a second lifespan loss accumulation value is also calculated for auxiliary early warning. An early warning is triggered when either the lifespan loss accumulation value or the second lifespan loss accumulation value reaches a corresponding preset threshold. The synergy of these two calculation methods ensures that early warnings are triggered promptly when the radiator's lifespan loss is severe. The calculation method for the second lifespan loss accumulation value includes: dividing the difference between the thermostat opening temperature and the coolant temperature in the radiator's upper water chamber into multiple intervals, and setting a corresponding second weighting coefficient for each interval; determining the second lifespan loss accumulation value based on the number of times the difference between the thermostat opening temperature and the coolant temperature in the radiator's upper water chamber belongs to each interval and the second weighting coefficient for each interval; since the difference between the thermostat opening temperature and the coolant temperature in the radiator's upper water chamber has a significant impact on thermal shock, the larger the temperature difference, the greater the lifespan loss from a single thermal shock. This calculation method takes the temperature difference as the core consideration and determines the second lifespan loss accumulation value based on the number of times the temperature difference belongs to each interval. In this embodiment, the calculation formula for the second lifespan loss accumulation value is: In the formula, S a A represents the accumulated value of the second lifetime loss. i This represents the second weight coefficient corresponding to the i-th interval. N i This indicates the number of times the thermostat opens when the difference between the thermostat opening temperature and the coolant temperature in the radiator's upper water chamber falls within the i-th interval.

[0059] This embodiment uses two calculation methods to characterize the lifespan loss of the radiator, thereby ensuring that when the lifespan loss of the radiator reaches a dangerous level, an early warning is triggered and the radiator is replaced in time to ensure the safe use of the radiator. Example 2

[0060] Based on the same inventive concept as Embodiment 1, this embodiment provides a radiator lifespan warning system, which includes:

[0061] The acquisition module is used to acquire the thermostat opening temperature, the coolant temperature in the radiator's upper water chamber, and the thermostat opening duration each time the thermostat of the radiator is opened.

[0062] The determination module is used to determine the life loss value caused by a single thermal shock for each opening of the thermostat, based on the difference between the thermostat opening temperature and the coolant temperature in the radiator upper water chamber, as well as the opening duration of the thermostat.

[0063] The accumulation module is used to accumulate the life loss value generated each time the thermostat is opened to obtain the life loss accumulation value.

[0064] The early warning module is used to trigger an early warning when the accumulated lifespan loss value reaches a preset threshold.

[0065] Those skilled in the art will understand that embodiments of the present invention can be provided as methods, systems, or computer program products. Therefore, the present invention can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention 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.

[0066] This invention is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. 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, generate instructions 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.

[0067] 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.

[0068] 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.

[0069] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention without departing from the spirit and scope of the claims. All of these forms are within the protection scope of the present invention.

Claims

1. A method for early warning of radiator lifespan, characterized in that, include: Each time the engine thermostat opens, the thermostat opening temperature, the coolant temperature in the radiator upper chamber, and the duration of the thermostat opening are obtained. For each opening of the thermostat, the life loss value caused by a single thermal shock is determined based on the difference between the thermostat opening temperature and the coolant temperature in the radiator upper water chamber, as well as the duration of the thermostat opening. The life loss value generated each time the thermostat is opened is accumulated to obtain the life loss accumulation value. An early warning is triggered when the accumulated lifespan loss value reaches a preset threshold. The method further includes: Obtain the coolant temperature at the engine thermostat; If the coolant temperature at the engine thermostat is equal to the coolant temperature in the radiator's upper water chamber and the thermostat fails to close within a preset time, the thermostat opening count will stop and the accumulation of lifespan loss value will cease.

2. The radiator lifespan early warning method according to claim 1, characterized in that, The formula for calculating the lifespan loss value is as follows: △T=T 节 - T 散 S n =f (△T n ,t n ) In the formula, △T represents the difference between the thermostat opening temperature and the coolant temperature in the radiator's upper water chamber, T 节 Indicates the thermostat opening temperature, T 散 This indicates the coolant temperature in the radiator's upper water chamber, n indicates the number of times the thermostat opens, and S... n ΔT represents the lifespan loss caused by a single thermal shock when the thermostat opens for the nth time. n t represents the difference between the thermostat opening temperature and the coolant temperature in the radiator upper water chamber when the thermostat opens for the nth time. n This indicates the duration of the thermostat's opening and closing during the nth time.

3. The radiator lifespan early warning method according to claim 2, characterized in that, The formula for calculating the accumulated lifespan value by sequentially accumulating the lifespan loss value generated each time the thermostat is opened is as follows: S m =S1+S2+S3+S4+……+S n In the formula, This represents the accumulated value of lifespan loss.

4. The radiator lifespan early warning method according to claim 1, characterized in that, The method further includes: The difference between the thermostat opening temperature and the coolant temperature in the radiator's upper water chamber is divided into multiple intervals, and a corresponding weighting coefficient is set for each interval. For each opening of the thermostat, the weighting coefficient of the life loss value caused by the thermal shock is determined according to the range of the difference between the thermostat opening temperature and the coolant temperature in the radiator upper water chamber. The accumulated lifespan loss value is obtained by weighted summing of the lifespan loss values ​​generated each time the thermostat is opened.

5. The radiator lifespan early warning method according to claim 4, characterized in that, The higher the range of the difference between the thermostat opening temperature and the coolant temperature in the radiator's upper water chamber, the greater the corresponding weighting coefficient.

6. The radiator lifespan early warning method according to claim 4, characterized in that, The multiple intervals include (0,10], (10,20], (20,30], (30,40], (40,50], (50,60], (60,70], (70,80], (80,90], and (90,100], and the unit of the boundary value of each interval is ℃.

7. The radiator lifespan early warning method according to claim 1, characterized in that, The method further includes: The difference between the thermostat opening temperature and the coolant temperature in the radiator's upper water chamber is divided into multiple intervals, and a corresponding second weighting coefficient is set for each interval. The second life loss accumulation value is determined based on the number of times the difference between the thermostat opening temperature and the coolant temperature in the radiator upper water chamber belongs to each interval and the second weighting coefficient of each interval. An early warning is triggered when the second accumulated lifespan loss value reaches the corresponding preset threshold.

8. The radiator lifespan early warning method according to claim 7, characterized in that, The formula for calculating the second lifetime loss accumulation value is: = * + * + * +…+ * ； In the formula, S a A represents the accumulated value of the second lifetime loss. i This represents the second weight coefficient corresponding to the i-th interval. + + +……+ =100%, i This indicates the number of times the thermostat opens when the difference between the thermostat opening temperature and the coolant temperature in the radiator's upper water chamber belongs to the i-th interval.

9. A radiator lifespan early warning system, characterized in that, For performing the radiator life warning method according to any one of claims 1-8, the warning system includes: The acquisition module is used to acquire the thermostat opening temperature, the coolant temperature in the radiator's upper water chamber, and the thermostat opening duration each time the thermostat of the radiator is opened. The determination module is used to determine the life loss value caused by a single thermal shock for each opening of the thermostat, based on the difference between the thermostat opening temperature and the coolant temperature in the radiator upper water chamber, as well as the opening duration of the thermostat. The accumulation module is used to accumulate the life loss value generated each time the thermostat is opened to obtain the life loss accumulation value. The early warning module is used to trigger an early warning when the accumulated lifespan loss value reaches a preset threshold.

Images