Engine cooling fan module control method, unit and machine readable storage medium

Abstract

The invention relates to an engine cooling fan module control method and unit and a machine readable storage medium, the method comprises the steps that power applied to a fan module is adjusted based on the environment temperature where the fan module is located, and when the environment temperature is within a first temperature range, the power applied to the fan module has first power; when the environment temperature is within a second temperature range higher than the first temperature range, the power applied to the fan module has second power, the second power is larger than the first power by a first power difference, the first power difference is 5%-10% of the second power, the first temperature range is not larger than 10 DEG C, and the second temperature range is not larger than 10 DEG C. The second temperature range is not less than 10 DEG C and not more than 60 DEG C. According to the engine cooling fan module control method and unit and the machine readable storage medium provided by the invention, the fan module can reasonably pass the test, and meanwhile, the fan module is efficiently put into application.

Description

Technical Field

[0001] The present application relates to an engine cooling fan module control method, unit and machine-readable storage medium. Background Art

[0002] In order to ensure the normal operation of the engine of a transportation vehicle such as a vehicle, it is necessary to control the operating temperature of the engine within a suitable temperature range. The engine is usually equipped with an engine cooling system for regulating the temperature of the engine. A radiator, such as a grille radiator, is arranged in the coolant flow path of the engine cooling system, so that the coolant that has heated up after cooling the engine can flow through the radiator to cool the coolant. At the same time, the engine cooling system also includes an engine cooling fan module for cooling the radiator or the coolant, which includes fan blades of a certain shape and a motor that can be powered to drive the fan blades to rotate.

[0003] In order to ensure the quality of fan modules put into application, it is necessary to perform tests on the fan modules in advance to determine whether the fan modules can at least reach the corresponding fan rated speed when the rated current that changes according to the ambient temperature near the fan modules is applied. Only fan modules that can at least reach the corresponding fan rated speed are considered to be reliably put into application. Otherwise, they will be considered unqualified products and abandoned.

[0004] However, the problem with doing so is that since the air density in the test environment or application environment becomes heavier due to the influence of temperature, the rated torque generated by certain types of fan modules when the rated current is applied will not enable the fan modules to reach the corresponding rated fan speed. However, the air volume output by these fan modules still meets the product requirements. If these types of fan modules are directly abandoned, it will be very cost-ineffective. Summary of the invention

[0005] The purpose of the present application is to optimize the engine cooling fan module control method, unit and machine-readable storage medium, which can solve the above-mentioned problems so that more fan modules can pass the test reasonably and be efficiently put into use. In other words, the test data of the fan module is also applicable to the fan module put into use.

[0006] According to one aspect of the present application, a method for controlling an engine cooling fan module is provided, comprising: adjusting the power applied to the fan module based on the ambient temperature of the fan module, wherein when the ambient temperature is within a first temperature range, the power applied to the fan module has a first power; and when the ambient temperature is within a second temperature range higher than the first temperature range, the power applied to the fan module has a second power, wherein the second power is greater than the first power by a first power difference, the first power difference is 5% to 10% of the second power, the first temperature range is not greater than 10°C, and the second temperature range is not less than 10°C and not greater than 60°C.

[0007] Optionally, when the ambient temperature is in a third temperature range higher than the second temperature range, the power applied to the fan module has a third power, the second power is greater than the third power by a second power difference, the second power difference is 5% to 10% of the second power, the third temperature range is not less than 10°C and not greater than 50°C, and the difference between the first power difference and the second power difference is not greater than 5% of the second power.

[0008] Optionally, the first temperature range is defined by 0°C and a first temperature point above 0°C; the second temperature range is defined by a second temperature point above the first temperature point and a third temperature point above the second temperature point; and the third temperature range is defined by a fourth temperature point above the third temperature point and a fifth temperature point above the fourth temperature point.

[0009] Optionally, as the ambient temperature rises from the first temperature point to the second temperature point, the power applied to the fan module gradually increases from the first power to the second power; and as the ambient temperature rises from the third temperature point to the fourth temperature point, the power applied to the fan module gradually decreases from the second power to the third power.

[0010] Optionally, the engine cooling fan module control method also includes at least one of the following: the first temperature point is not greater than 10°C; the second temperature point is in the range of 10°C to 20°C; the third temperature point is in the range of 30°C to 70°C; the fourth temperature point is in the range of 40°C to 80°C; and the second power is 420W.

[0011] Optionally, the engine cooling fan module control method also includes: as the ambient temperature rises to above the fifth temperature point, the power applied to the fan module is further gradually reduced from the third power to ensure the safety of the fan module at high temperatures above the fifth temperature point. Optionally, the fifth temperature point is in the range of 80°C to 90°C.

[0012] Optionally, the engine cooling fan module control method further includes: determining the second temperature range based on a model of the fan module.

[0013] Optionally, adjusting the power applied to the fan module includes adjusting a voltage and / or a current applied to the fan module.

[0014] According to another aspect of the present application, an engine cooling fan module control unit is provided, which includes: a processor; and a memory having executable instructions stored thereon, wherein when the executable instructions are executed, the processor executes the above-mentioned engine cooling fan module control method.

[0015] According to yet another aspect of the present application, a machine-readable storage medium is provided, which stores executable instructions, and when the instructions are executed by a processor, the above-mentioned engine cooling fan module control method is implemented.

[0016] The engine cooling fan module control method, unit and machine-readable storage medium provided in the present application enable more fan modules to pass the test reasonably, and at the same time identify fan modules with real quality defects, so that the fan modules can be efficiently put into use. This is because whether in testing or in application, adjusting the power applied to the fan module based on the ambient temperature of the fan module (for example, adjusting the voltage and / or current applied to the fan module) can increase the speed of the fan module by a small amount to compensate for the speed deviation caused by the ambient temperature and model. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings, which constitute a part of the specification, illustrate embodiments of the present application and, together with the description, serve to explain the principles of the present application.

[0018] Figure 1 It is a schematic diagram of a general engine cooling system.

[0019] Figure 2 is a flow chart of an optimized engine cooling fan module control method according to one embodiment of the present application.

[0020] Figure 3 Is based on Figure 2 A graph of the current applied to the fan module by an optimized engine cooling fan module control method is shown.

[0021] Figure 4 Is based on Figure 2 Another graph of the current applied to the fan module by the optimized engine cooling fan module control method is shown. DETAILED DESCRIPTION

[0022] Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangement of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present application.

[0023] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present application, its application, or uses.

[0024] Techniques and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the techniques and equipment should be considered part of the specification.

[0025] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0026] It should be noted that like reference numerals and letters refer to similar items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0027] Figure 1 A general engine cooling system is shown, which is used to cool an engine 11, such as an engine 11 of a vehicle or other transportation vehicle. A pump 12 and a radiator 13 are arranged in the coolant flow path of the engine cooling system. The pump 12 drives the coolant to flow in the coolant flow path, as shown by the arrow. The coolant that has heated up after cooling the engine 11 can flow through the radiator 13 to cool the coolant. At the same time, the engine cooling system also includes an engine cooling fan module 14 for cooling the radiator 13 or the coolant, which includes fan blades 15 of a certain shape, a motor 16 that can be powered to drive the fan blades 15, and a sensor for detecting the ambient temperature T near the fan module 14. amb The temperature sensor 17.

[0028] In order to make more fan modules pass the test reasonably and to make the fan modules be put into use efficiently, the engine cooling fan module control method provided by the embodiment of the present application can be used in both the test and the application to adjust the power applied to the fan module based on the ambient temperature of the fan module (for example, adjust the voltage and / or current applied to the fan module), wherein when the ambient temperature is within a first temperature range, the power applied to the fan module has a first power; and when the ambient temperature is within a second temperature range higher than the first temperature range, the power applied to the fan module has a second power, wherein the second power is greater than the first power by a first power difference, the first power difference is 5% to 10% of the second power, the first temperature range is not greater than 10°C, and the second temperature range is not less than 10°C and not greater than 60°C. In this way, the speed of the fan module can be increased by a small amount to compensate for the speed deviation caused by the ambient temperature and model.

[0029] Accordingly, an engine cooling fan module control unit 18 is provided for the fan module 14, which includes: a processor 18a; and a memory 18b on which executable instructions are stored, which when executed enable the processor 18a to execute an engine cooling fan module control method to be described in detail below.

[0030] Accordingly, a machine-readable storage medium is provided for the fan module 14 , which includes instructions, which when executed by a processor, implement the engine cooling fan module control method which will be described in detail below.

[0031] In the following, the engine cooling fan module control method will be described by taking the adjustment of the current applied to the fan module as an example. The method includes: Figure 2 At least some of the various steps shown. It is understandable that, in some cases, the voltage applied to the fan module may be supplemented or alternatively adjusted to ultimately adjust the power applied to the fan module, thereby ensuring the rotation speed of the fan module.

[0032] Step S101: Optionally, the model of the fan module 14 can be read during the test or application of the fan module 14. The model can identify various operating parameters of the fan module 14, such as the rated voltage, rated current, power, etc. of the fan module 14 during operation. The model can also identify the manufacturer of the fan module 14, as well as the manufacturing process and detailed features of the shape of the fan module 14 (especially the fan blades 15). Due to different manufacturers, the manufacturing process of the fan module 14 will be different, resulting in differences in the detailed features of the shape of the fan module 14.

[0033] Step S102: Optionally, based on the model of the fan module 14, the current I (eg, rated current) to be applied to the fan module 14 and the (minimum) desired rotation speed V (eg, rated rotation speed) to be achieved by the fan module 14 when the current I is applied thereto may be determined.

[0034] Just as an example, Figure 3 As shown, when the ambient temperature T amb In a conventional temperature range of 0°C to 85°C, for example, the current I may be 30A, and as the ambient temperature T amb During the operation of the engine, as the temperature of the radiator 13 or the coolant increases to, for example, above 85° C., the current I may be gradually reduced at different slopes, for example, at the ambient temperature T amb When the ambient temperature rises to 105℃ and 130℃, the current I will decrease to 29A and 17A respectively. amb When the temperature rises to 140°C or above, the current I will be maintained at 4A to ensure the safety of the fan module 14 at high temperatures. amb , in addition to the change in current I, the required desired speed V will also change.

[0035] In any case, when the ambient temperature is within the first temperature range defined by 0° C. and a first temperature point T1 above 0° C., the current applied to the fan module 14 is 30 A, so that the power applied to the fan module 14 has a first power, for example, the first power is 390 W. For example, the first temperature point T1 is not greater than 10° C., that is, the first temperature range is not greater than 10° C. It is worth noting that the power applied to the fan module 14 within the first temperature range having the first power helps prevent the magnetic steel constituting the motor 16 from being demagnetized.

[0036] Step S103: Optionally, determining within a temperature range, the actual speed V that the fan module 14 can reach when the current I is applied a Whether the actual speed V of the fan module 14 is lower than the expected speed V within a certain degree, such a temperature range is the second temperature range defined by the second temperature point T2 and the third temperature point T3. The certain degree is small, for example, the actual speed V of the fan module 14 a The speed V is lower than the expected speed V by 10%. Optionally, the current I can be directly applied to the fan module 14 to observe whether the phenomenon of being lower than the expected speed V occurs within a temperature range through the speed signal from the speed sensor of the motor 16. Generally, the ambient temperature T ambThe lower the temperature, the greater the air density and the higher the air quality. The second temperature range is not less than 10°C and not more than 60°C, the second temperature point T2 is in the range of 10°C to 20°C; the third temperature point T3 is in the range of 30°C to 70°C. Alternatively, based on the model of the fan module 14 and the air density in the test environment from the optional air density sensor, without applying the current I to the fan module 14, the actual speed V that the fan module 14 can reach when the current I is applied within the second temperature range can be determined based on prior experience. a It will tend to be lower than the desired speed V within a certain range.

[0037] Step S104: When the result of the judgment in step S103 is negative, such fan module 14 can be identified or classified as a fan module 14 of first-class quality, and the test data related to the first-class quality of the fan module 14 can be stored in the memory 18b for subsequent use in the fan module 14 put into use. The test data related to the first-class quality of the fan module 14 indicates that the current I is available or effective within the temperature range.

[0038] Step S105: When the judgment result in step S103 is yes, determine the corresponding ambient temperature T within the temperature range based on the upper limit of the allowable tolerance value ΔI set for the current I in the test. amb The recommended current I' applied to the fan module 14 is recommended below, and the recommended current I' is adjusted higher than the current I. For example only, when the current I is 30A, the upper limit of the permissible tolerance value ΔI is 3A, that is, applying a recommended current I' of up to 30A of the current I + the upper limit of the permissible tolerance value ΔI 3A = 33A to the fan module 14 in the test and application also meets the test requirements, so that when the ambient temperature is within the second temperature range, the power applied to the fan module has a second power. For example, the second power is 420W, and other values ​​of the second power are also feasible, as long as the first power difference is 5% to 10% of the second power.

[0039] Alternatively, if Figure 4As shown, when the ambient temperature is within a third temperature range higher than the second temperature range, the power applied to the fan module has a third power, the second power is greater than the third power by a second power difference, the second power difference is 5% to 10% of the second power, the third temperature range is not less than 10°C and not greater than 50°C, and the difference between the first power difference and the second power difference is not greater than 5% of the second power, therefore, the second power difference may be equal to or not equal to the second power difference. The third temperature range is defined by a fourth temperature point T4 higher than the third temperature point T3 and a fifth temperature point T5 higher than the fourth temperature point T4, the fourth temperature point T4 is within a range of 40°C to 80°C; the fifth temperature point T5 is within a range of 80°C to 90°C, for example, 85°C.

[0040] Back to Figure 3 As the ambient temperature rises from the first temperature point T1 to the second temperature point T2, the current I is gradually increased to the recommended current I' by means of the first relationship, so that the recommended current I' reaches, for example, the sum of the current I and the upper limit of the allowable tolerance value ΔI (for example, 33A) at the second temperature point T2, so that the power applied to the fan module is gradually increased from the first power to the second power; and as the ambient temperature T amb From the third temperature point T3 to the fourth temperature point T4, the recommended current I' is gradually reduced from the above sum by means of the second relationship, so that the recommended current I' is restored to, for example, the current I at the fourth temperature point T4, so that the power applied to the fan module is gradually reduced from the second power to the third power. This method of gradually increasing the recommended current I' compared to the current I within the temperature range and then gradually restoring it helps the fan module 14 to reasonably pass the test, while preventing the actual speed V of the fan module 14 from exceeding the limit. a Mutations can occur without causing adverse effects on test results and noise, without having to change the entire test environment in a more complex and expensive way.

[0041] The recommended current I' is based on the first relationship and the second relationship with respect to the ambient temperature T amb Alternatively, in some cases, the change may be nonlinear, for example, any form of bending occurs so that the process of increasing and / or decreasing the current limit appears as a part of a sine or cosine line, or appears as a smooth transition shape with a curvature, thereby accelerating the process of increasing and / or decreasing the recommended current I'.

[0042] Optionally, based on the ambient temperature T amb The formula used to determine the recommended current I' is:

[0043] I'=I+K×ΔI (1)

[0044] When the ambient temperature T ambBetween the first temperature point T1 and the second temperature point T2,

[0045] K= (T amb -T1) / (T2-T1) (2)

[0046] That is, the first relationship is I'=I+(T amb -T1)×ΔI / (T2-T1)(3)

[0047] When the ambient temperature T amb Between the second temperature point T2 and the third temperature point T3,

[0048] K=1 (4)

[0049] When the ambient temperature T amb Between the third temperature point T3 and the fourth temperature point T4,

[0050] K= (T3-T amb ) / (T4-T3) (5)

[0051] That is, the second relationship is I'=I+(T3-T amb )×ΔI / (T4-T3)(6)

[0052] Additionally, when the ambient temperature T amb When the temperature range is exceeded,

[0053] K=0 (7)

[0054] That is, the current I is applied to the fan module 14 .

[0055] Alternatively, if Figure 4 As shown, the second temperature point T2 and the third temperature point T3 may also overlap, that is, the second temperature range is only one temperature point (eg, 20° C.) and the fourth temperature point T4 at this time may be, for example, 40° C.

[0056] Optionally, the actual rotation speed V of the fan module 14 may be determined. a The maximum difference with the expected speed V within the above certain range occurs at at least one temperature point or ambient temperature sub-interval within the temperature range, so as to determine the second temperature point T2 and the third temperature point T3 based on the at least one temperature point or the ambient temperature sub-interval. In this case, the temperature difference between the second temperature point T2 and the first temperature point T1 may not be equal to the temperature difference between the fourth temperature point T4 and the third temperature point T3, so that the process of increasing and decreasing the recommended current I' is more in line with the test and subsequent application requirements.

[0057] Back again Figure 2Step S106: Optionally, determine the actual speed V that the fan module 14 can reach when the recommended current I' is applied within the temperature range. a Is it lower than the expected rotation speed V, for example, lower than the expected rotation speed V within a certain range.

[0058] It is mainly aimed at determining the actual speed V that the fan module 14 can reach when the current I is applied within a temperature range without applying the current I to the fan module 14. a As an additional step, it is also necessary to determine whether the ambient temperature T exceeds the temperature range. amb Under this condition, the actual speed V that the fan module 14 can reach when the current I is applied a Whether it is lower than the expected speed V within a certain range.

[0059] Step S107: Optionally, when it is determined that at least one of the judgment result in step S106 and the judgment result in the optional additional step is yes, such fan module 14 is identified as a defective product, that is, such fan module 14 fails the test.

[0060] Step S108: Optionally, when it is determined that both the judgment result in step S106 and the judgment result as an optional additional step are negative, the corresponding ambient temperature T in the temperature range is determined based on a portion of the upper limit of the allowable tolerance value ΔI set for the current I in the test. amb The additional recommended current I" is recommended to be applied to the fan module 14 under the following conditions. For example, in the case where the upper limit of the allowable tolerance value ΔI is 3A, a portion of the upper limit is, for example, a proportional value of the upper limit, for example, 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, etc. of the upper limit, so that when the ambient temperature is within the second temperature range, the power applied to the fan module has the second power. Based on the ambient temperature T amb The manner of determining the additional recommended current I" may at least partially refer to the various manners mentioned in step S105.

[0061] Step S109: Optionally, determine the actual speed V that the fan module 14 can achieve when the additional recommended current I" is applied within the temperature range. a Is it lower than the expected speed V?

[0062] Step S110: Optionally, when it is determined that the result of the judgment in step S109 is no, such fan module 14 is identified as a qualified product of grade 2 quality. The test data related to the grade 2 quality of the fan module 14 can be stored in the memory 18b for the fan module 14 put into use. The test data related to the grade 2 quality of the fan module 14 will indicate that in the subsequent application of the fan module 14 for engine cooling, if the temperature of the application environment is within the temperature range, the processor 18b of the engine cooling fan module control unit 18 will apply a recommended current to the fan module 14 so that the fan module 14 at least reaches the rated fan speed.

[0063] Step S111: Optionally, when it is determined that the result of the judgment in step S109 is yes, such fan module 14 is identified as a qualified product of grade 3 quality. The test data related to the grade 3 quality of the fan module 14 can be stored in the memory 18b for the fan module 14 put into use. The test data related to the grade 3 quality of the fan module 14 will indicate that in the subsequent application of the fan module 14 for engine cooling, if the temperature of the application environment is within the temperature range, the processor 18b of the engine cooling fan module control unit 18 will apply an additional recommended current to the fan module 14 so that the fan module 14 at least reaches the rated fan speed.

[0064] Alternatively, steps S108 to S111 may be omitted, and when the judgment result in step S106 is determined to be negative, such fan module 14 may be identified as a qualified product of level 2 quality.

[0065] All steps in the method described above can be implemented in the unit 18 as modules with corresponding functions, wherein the unit 18 is connected to the temperature sensor 17, the rotation speed sensor, the air density sensor and other related electronic devices in communication to receive information about the ambient temperature, rotation speed and air density near the fan module 14. These modules can be implemented as hardware, software, or a combination thereof. In addition, any of these modules can be further divided into sub-modules or combined together in terms of function.

[0066] Processor can be implemented using electronic hardware, computer software or its any combination.Whether these processors are implemented as hardware or software will depend on specific application and the overall design constraint imposed on the unit.As an example, the processor provided in the application, any part of the processor or any combination of the processor can be implemented as microprocessor, microcontroller, digital signal processor (DSP), field programmable gate array (FPGA), programmable logic device (PLD), state machine, gate logic, discrete hardware circuit and other suitable processing components configured for performing the various functions described in the application.The function of the processor provided in the application, any part of the processor or any combination of the processor can be implemented as software performed by microprocessor, microcontroller, DSP or other suitable platforms.

[0067] Figure 2 The flowchart or block diagram in shows the possible architecture, function and operation of the unit, method and computer program product according to multiple embodiments of the present application. In this regard, each box in the flowchart or block diagram can represent a part of a module, program segment or instruction, and the part of the module, program segment or instruction contains one or more executable instructions for realizing the specified logical function. In some alternative implementations, the functions marked in the box can also occur in a different order from the order marked in the accompanying drawings. For example, two consecutive boxes can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram and / or flowchart, and the combination of the boxes in the block diagram and / or flowchart can be implemented by a dedicated hardware-based unit that performs a specified function or action, or can be implemented by a combination of dedicated hardware and computer instructions. It is well known to those skilled in the art that it is equivalent to implement it by hardware, implement it by software, and implement it by combining software and hardware.

[0068] Those skilled in the art should understand that the various embodiments disclosed above may be subjected to various modifications, variations and combinations without departing from the essence of the invention, and these modifications, variations and combinations should all fall within the scope of protection of the present invention, and the scope of protection of the present invention should be defined by the claims.

Claims

1. A method for controlling an engine cooling fan module, comprising: adjusting the power applied to the fan module based on the temperature of the environment in which the fan module is located, Wherein, when the ambient temperature is within a first temperature range, the power applied to the fan module has a first power; and When the ambient temperature is within a second temperature range higher than the first temperature range, the power applied to the fan module has a second power, The second power is greater than the first power by a first power difference, the first power difference is 5% to 10% of the second power, the first temperature range is not greater than 10°C, and the second temperature range is not less than 10°C and not greater than 60°C.

2. The engine cooling fan module control method according to claim 1, wherein: When the ambient temperature is within a third temperature range higher than the second temperature range, the power applied to the fan module has a third power, the second power is greater than the third power by a second power difference, the second power difference is 5% to 10% of the second power, the third temperature range is not less than 10°C and not greater than 50°C, and the difference between the first power difference and the second power difference is not greater than 5% of the second power.

3. The engine cooling fan module control method according to claim 2, wherein: The first temperature range is defined by 0°C and a first temperature point above 0°C; The second temperature range is defined by a second temperature point higher than the first temperature point and a third temperature point higher than the second temperature point; and The third temperature range is defined by a fourth temperature point higher than the third temperature point and a fifth temperature point higher than the fourth temperature point.

4. The engine cooling fan module control method according to claim 3, wherein: As the ambient temperature rises from the first temperature point to the second temperature point, the power applied to the fan module gradually increases from the first power to the second power; and As the ambient temperature rises from the third temperature point to the fourth temperature point, the power applied to the fan module gradually decreases from the second power to the third power.

5. The engine cooling fan module control method according to claim 3 or 4, further comprising at least one of the following: The first temperature point is not greater than 10°C; The second temperature point is in the range of 10°C to 20°C; The third temperature point is in the range of 30°C to 70°C; The fourth temperature point is in the range of 40°C to 80°C; and The second power is 420W.

6. The engine cooling fan module control method according to claim 3 or 4, further comprising: As the ambient temperature rises to above the fifth temperature point, the power applied to the fan module is further gradually reduced from the third power to ensure the safety of the fan module at high temperatures above the fifth temperature point. Optionally, the fifth temperature point is in the range of 80°C to 90°C.

7. The engine cooling fan module control method according to any one of claims 1 to 4, further comprising: The second temperature range is determined based on a model of the fan module.

8. The engine cooling fan module control method according to any one of claims 1 to 4, wherein: The adjusting the power applied to the fan module includes adjusting the voltage and / or current applied to the fan module.

9. An engine cooling fan module control unit, comprising: processor; and A memory having executable instructions stored thereon, wherein when the executable instructions are executed, the processor executes the engine cooling fan module control method according to any one of claims 1-8.

10. A machine-readable storage medium storing executable instructions, wherein the instructions, when executed by a processor, implement the engine cooling fan module control method according to any one of claims 1-8.

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