Silicone oil fan control method, device, equipment, storage medium and engine

Abstract

The application relates to the technical field of engine fans, in particular to a silicone oil fan control method, device, equipment, storage medium and engine. The method comprises the following steps: acquiring the real-time rotating speed of a silicone oil fan; judging whether the real-time rotating speed belongs to a preset full-engagement rotating speed range, wherein the full-engagement rotating speed range is preset according to a full-engagement critical point working condition of the silicone oil fan; if the real-time rotating speed belongs to the full-engagement rotating speed range, adjusting the real-time rotating speed of the silicone oil fan based on preset rotating speed information and / or the real-time rotating speed, so that the real-time rotating speed does not belong to the full-engagement rotating speed range, wherein the preset rotating speed information is preset according to the performance of the silicone oil fan. The application is used to solve the defects that the rotating speed of the silicone oil fan is greatly fluctuated and the stability is poor in the prior art.

Description

Technical Field

[0001] This invention relates to the field of engine fan technology, and in particular to a silicone oil fan control method, device, equipment, storage medium, and engine. Background Technology

[0002] As a crucial component of the engine cooling system, the performance of the silicone oil fan directly impacts the radiator's heat dissipation efficiency. Simultaneously, the silicone oil fan is a significant consumer of engine power and a major source of noise and vibration. In existing technologies, the silicone oil fan's real-time speed is regulated by a regulator to match the target speed. However, when the real-time speed approaches the fan's full engagement speed, fine-tuning the speed by the regulator causes a drastic drop in the actual fan speed. The regulator then quickly reverts to its original position, bringing the fan back to the full engagement threshold, resulting in another sharp drop in the actual fan speed. This cycle repeats, causing significant fluctuations in the real-time fan speed, a sharp increase in noise, and reduced operational stability. Summary of the Invention

[0003] This invention provides a silicone oil fan control method, device, equipment, storage medium, and engine to solve the defects of silicone oil fans in the prior art, such as drastic speed fluctuations and poor stability during operation.

[0004] This invention provides a method for controlling a silicone oil fan, comprising: acquiring the real-time rotational speed of the silicone oil fan; determining whether the real-time rotational speed falls within a preset full-meshing rotational speed range, wherein the full-meshing rotational speed range is preset based on the full-meshing critical point operating condition of the silicone oil fan; if the real-time rotational speed falls within the full-meshing rotational speed range, adjusting the real-time rotational speed of the silicone oil fan based on preset rotational speed information and / or the real-time rotational speed, so that the real-time rotational speed does not fall within the full-meshing rotational speed range, wherein the preset rotational speed information is preset based on the performance of the silicone oil fan.

[0005] According to a silicone oil fan control method provided by the present invention, the preset speed information includes a preset target speed, wherein the preset target speed is less than the full engagement speed, and the full engagement speed is the speed of the silicone oil fan at the full engagement critical point; the step of adjusting the real-time speed of the silicone oil fan based on the preset speed information and / or the real-time speed includes: determining the preset target speed as the fan speed set value; and adjusting the real-time speed of the silicone oil fan to the fan speed set value.

[0006] According to a silicone oil fan control method provided by the present invention, the preset speed information includes a slip thermal speed range, wherein the slip thermal speed range is set according to the slip thermal characteristics of the engine and the silicone oil fan; adjusting the real-time speed of the silicone oil fan based on the preset speed information and / or the real-time speed includes: comparing the real-time speed with the slip thermal speed range; if the real-time speed belongs to the slip thermal speed range, activating the slip thermal protection of the silicone oil fan; and adjusting the real-time speed of the silicone oil fan through the slip thermal protection.

[0007] According to a silicone oil fan control method provided by the present invention, the slip thermal speed range includes a slip thermal upper limit curve and a slip thermal lower limit curve, the slip thermal upper limit curve includes a maximum slip speed, and the slip thermal lower limit curve includes a minimum slip speed; the step of comparing the real-time speed with the slip thermal speed range includes: obtaining a preset fan speed setting value for the silicone oil fan; if the fan speed setting value is greater than the maximum slip speed, comparing the real-time speed with the slip thermal upper limit curve; if the fan speed setting value is less than the minimum slip speed, comparing the real-time speed with the slip thermal lower limit curve.

[0008] According to a silicone oil fan control method provided by the present invention, the step of activating the slip thermal protection of the silicone oil fan if the real-time speed falls within the slip thermal speed range includes: activating the slip thermal protection of the silicone oil fan if the real-time speed is less than the corresponding slip thermal upper limit value in the slip thermal upper limit curve based on the same engine speed; or activating the slip thermal protection of the silicone oil fan if the real-time speed is greater than the corresponding slip thermal lower limit value in the slip thermal lower limit curve based on the same engine speed.

[0009] According to a silicone oil fan control method provided by the present invention, after adjusting the real-time speed of the silicone oil fan to the fan speed set value, the method further includes: acquiring the engine temperature; if the engine temperature is greater than a preset temperature threshold, comparing the real-time speed with the slip thermal speed range; if the real-time speed falls within the slip thermal speed range, activating the slip thermal protection of the silicone oil fan; and adjusting the real-time speed of the silicone oil fan through the slip thermal protection, wherein the slip thermal speed range is set according to the slip thermal characteristics of the engine and the silicone oil fan.

[0010] The present invention also provides a silicone oil fan control device, comprising: an acquisition module for acquiring the real-time rotational speed of the silicone oil fan; a judgment module for judging whether the real-time rotational speed belongs to a preset full-meshing rotational speed range, wherein the full-meshing rotational speed range is preset according to the full-meshing critical point operating condition of the silicone oil fan; and an adjustment module for adjusting the real-time rotational speed of the silicone oil fan based on preset rotational speed information and / or the real-time rotational speed if the real-time rotational speed belongs to the full-meshing rotational speed range, so that the real-time rotational speed does not belong to the full-meshing rotational speed range, wherein the preset rotational speed information is preset according to the performance of the silicone oil fan.

[0011] The present invention also provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the silicone oil fan control method as described above.

[0012] The present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the silicone oil fan control method as described above.

[0013] The present invention also provides an engine including a silicone oil fan, the silicone oil fan being controlled by any of the silicone oil fan control methods described above.

[0014] The present invention provides a silicone oil fan control method, apparatus, device, storage medium, and engine, which acquires the real-time rotational speed of the silicone oil fan; determines whether the real-time rotational speed falls within a preset full-mesh speed range, wherein the full-mesh speed range is preset based on the full-mesh critical point operating condition of the silicone oil fan; if the real-time rotational speed falls within the full-mesh speed range, adjusts the real-time rotational speed of the silicone oil fan based on preset speed information and / or the real-time rotational speed, so that the real-time rotational speed does not fall within the full-mesh speed range, wherein the preset speed information is preset based on the performance of the silicone oil fan. In the above process, by comparing the real-time rotational speed with the full-mesh speed range, the real-time rotational speed of the silicone oil fan is adjusted, thereby avoiding drastic speed fluctuations caused by the silicone oil fan operating at full-mesh speed, and achieving stable operation of the silicone oil fan. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the process steps for implementing the silicone oil fan control method provided by the present invention;

[0017] Figure 2 This is one of the schematic cross-sectional views of the silicone oil fan structure provided by the present invention;

[0018] Figure 3 This is the second schematic diagram of the cross-section of the silicone oil fan structure provided by the present invention;

[0019] Figure 4 This is a schematic diagram of the silicone oil fan speed control function provided by the present invention;

[0020] Figure 5 This is a schematic diagram of the fan speed curve based on water temperature provided by the present invention;

[0021] Figure 6 This is a schematic diagram of the fan speed curve based on intake air temperature provided by the present invention;

[0022] Figure 7 This is an example diagram showing the actual speed variation of the silicone oil fan under different operating conditions provided by the present invention;

[0023] Figure 8 This is an example diagram illustrating the drastic real-time speed change of the fan provided by the present invention;

[0024] Figure 9 This is an example diagram showing the fan speed change when the fan speed setting value is 600 rpm, provided by the present invention.

[0025] Figure 10 This is an example diagram of the slip thermal rotation speed range provided by the present invention;

[0026] Figure 11 This is a schematic diagram of the logic processing of slip thermal speed range and fan speed provided by the present invention;

[0027] Figure 12 This is an example diagram of parameter settings provided by the present invention;

[0028] Figure 13 This is an example diagram of fan speed utilizing slip thermal protection provided by the present invention;

[0029] Figure 14 This is an example diagram of silicone oil fan speed adjustment provided by the present invention;

[0030] Figure 15 This is a schematic diagram of the silicone oil fan control device provided by the present invention;

[0031] Figure 16 This is a schematic diagram of the structure of the electronic device provided by the present invention. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0033] Silicone oil fans are crucial components for engine cooling and require proper setup and precise control. The following section will discuss this in conjunction with... Figures 1 to 13 The present invention describes a silicone oil fan control method, apparatus, device, storage medium, and engine.

[0034] In one embodiment, such as Figure 1 As shown, the process steps for implementing the silicone oil fan control method are as follows:

[0035] Step 101: Obtain the real-time speed of the silicone oil fan.

[0036] In this embodiment, as Figure 2 The diagram shows a cross-sectional view of the silicone oil fan structure. The working principle of the silicone oil fan is as follows: The multi-groove driven plate and the multi-groove driving plate on the front half of the silicone oil fan clutch form a working chamber. The silicone oil in the working chamber acts as a medium, causing the driving plate to drive the driven plate to rotate.

[0037] Driven by the fan pulley, the driving disc rotates, throwing the silicone oil stored in the annular multi-groove (working chamber) of the driving and driven discs outwards. The oil then flows through the internal oil passages of the clutch housing and into the annular oil reservoir on the driving disc via the silicone oil return port. The oil in the reservoir is then drawn back into the annular multi-groove between the driving and driven discs via the silicone oil valve. As long as the speed difference between the driving and driven discs exists, the silicone oil continues to circulate in this manner.

[0038] When the electromagnetic coil is de-energized, the valve plate (steel plate) is in a state of... Figure 2 As shown, the silicone oil valve port on the drive plate is open, the working chamber is filled with silicone oil, the friction between the drive plate and the driven plate is large, the drive plate can drive the fan to rotate, and the fan clutch is engaged.

[0039] When the electromagnetic coil is energized, the valve plate is in a position as follows: Figure 3 At the indicated location, the silicone oil valve port is blocked. After the silicone oil flows into the annular oil reservoir on the drive disc, it can no longer enter the working chamber. At this time, due to the very small friction between the drive and driven discs, the fan rotates at a very low speed (follower speed), and the fan clutch is in the disengaged state.

[0040] In this embodiment, the silicone oil fan adjusts its real-time speed according to a set fan speed setting value (denoted as Fans_nSetP) as the target speed. Specifically, as shown... Figure 4 The diagram shown illustrates the silicone oil fan speed control function. The fan speed setpoint calculation function mainly comprises three parts: calculation and limitation of the fan speed setpoint based on environmental conditions, the fan speed setpoint under slip thermal protection status, and the fan speed setpoint when the sensor fails. These three factors, based on certain selection conditions, yield the final fan speed setpoint (Fans_nSetP). The fan speed control function, based on the fan speed setpoint and other parameters and conditions, calculates the required opening degree (denoted as Fan_r) to activate the fan and outputs it to the fan equipment to control its operation.

[0041] The calculation of fan speed requirements based on various environmental conditions mainly includes environmental conditions such as engine braking status, vehicle speed, engine load, engine temperature, intake manifold temperature, engine oil temperature, hydraulic oil temperature, hydraulic retarder status, and air conditioning on status.

[0042] In a specific example, such as Figure 5 The schematic diagram of the fan speed curve based on water temperature shows how the speed of the silicone oil fan changes with water temperature. The horizontal axis represents the engine water temperature, and the vertical axis represents the fan speed.

[0043] Another specific example, such as Figure 6 The schematic diagram of the fan speed curve based on intake air temperature shows how the speed of the silicone oil fan changes with the engine intake air temperature. The horizontal axis represents the engine intake air temperature, and the vertical axis represents the fan speed.

[0044] The maximum value among the calculated fan speed requirements for each environmental condition is taken. This output value is also limited by the maximum allowable fan speed setting (denoted as Fans_nMax). At the same time, the fan speed setting is also limited by the engine operating status. During engine start-up and engine shutdown, severe vibration of the engine at low speed may damage the fan clutch.

[0045] After calculating the required fan speed under various environmental conditions, and considering the limitations of the maximum allowable fan speed and engine status, the final fan speed setpoint based on environmental conditions is denoted as (Fans_nEnvLimSetP_mp).

[0046] Furthermore, the above three parts can be further divided into two fan control strategies: outer loop control and inner loop control. Specifically, the speed of the silicone oil fan is generally determined by a logic diagram (also known as a map) formed by considering external environmental factors such as engine body temperature, intake air temperature, and lubricating oil temperature. The internal slip thermal protection limit of the silicone oil fan is the inner loop control, and the fan speed is precisely controlled through the combined action of the outer loop and inner loop control.

[0047] like Figure 7 The diagram shows an example of the actual speed variation of the silicone oil fan under different operating conditions. Under different operating conditions, when the engine speed and fan speed setpoints change, the real-time speed of the silicone oil fan will change with the fan speed setpoints and will fluctuate to varying degrees.

[0048] Step 102: Determine whether the real-time speed falls within the preset full engagement speed range, wherein the full engagement speed range is preset based on the full engagement critical point operating condition of the silicone oil fan.

[0049] In this embodiment, the silicone oil fan is adjusted by a regulator that adjusts its real-time speed. This regulator can be based on a proportional-integral-derivative (PID) algorithm. PID adjusts the real-time speed to achieve the goal of matching the actual real-time speed of the silicone oil fan with the target speed. However, in actual silicone oil fan speed control, a phenomenon may occur, such as... Figure 8 The diagram illustrates a dramatic real-time speed fluctuation of the silicone oil fan. When the real-time speed of the fan approaches the corresponding full-mesh speed of the current engine speed, even a slight adjustment to the PID controller causes a sharp drop in real-time speed. The PID controller then quickly corrects, returning the fan speed to near the full-mesh speed. This cycle repeats, resulting in periodic fluctuations and unstable operation of the silicone oil fan. The full-mesh critical point condition refers to the condition where the silicone oil fan is at the full-mesh critical point, where its speed is the full-mesh speed.

[0050] In this embodiment, the main reasons for the drastic fluctuations are as follows: When the silicone oil fan operates near its full engagement speed, the working chamber inside the silicone oil fan clutch is filled with silicone oil. When there is a deviation between the target speed and the real-time speed, the PID controller will intervene in the adjustment of the silicone oil fan. When the actual speed is greater than the set fan speed, the relay's electromagnetic coil will be energized, and the valve plate will engage the silicone oil valve port. At this time, the silicone oil inside the working chamber will be continuously thrown out, and the silicone oil in the silicone oil storage chamber cannot flow into the working chamber, causing the silicone oil in the internal working chamber to continuously decrease. The clutch disengages, causing a sudden drop in speed. When the real-time speed is detected to be lower than the target speed, the electromagnetic coil is de-energized, and the valve separates from the valve port. Because the electromagnetic coil de-energizes with a 0.5-second lag, and the inertia of the silicone oil also requires a certain amount of time for the internal silicone oil to be thrown into the working chamber, the clutch cannot engage immediately, resulting in the speed not increasing immediately, thus causing drastic speed fluctuations. When drastic speed fluctuations occur, the periodic fluctuations of the silicone oil fan cause periodic noise changes, and also keep the silicone oil fan in a state of drastic fluctuation, which can easily damage the silicone oil fan.

[0051] Step 103: If the real-time speed is within the full engagement speed range, adjust the real-time speed of the silicone oil fan based on the preset speed information and / or the real-time speed so that the real-time speed is not within the full engagement speed range. The preset speed information is set in advance according to the performance of the silicone oil fan.

[0052] In this embodiment, the key to avoiding drastic fluctuations in the speed of the silicone oil fan is to prevent it from operating near its full engagement speed. Specifically, the full engagement speed range is a preset speed range based on the full engagement critical point of the silicone oil fan. This full engagement speed range can be preset based on the hardware parameters and / or experimental data of the silicone oil fan. The scope of protection of this invention is not limited to the specific value of the full engagement speed range.

[0053] Based on the above, this invention proposes two methods to avoid silicone oil fans operating in a fully engaged state.

[0054] In one embodiment, the drastic fluctuations in the speed of the silicone oil fan are avoided by reducing the setpoint of the fan speed. Specifically, based on preset speed information and / or real-time speed, the real-time speed of the silicone oil fan is adjusted. The process is as follows: a preset target speed is determined as the setpoint; the real-time speed of the silicone oil fan is adjusted to the setpoint. The preset speed information includes the preset target speed, wherein the preset target speed is less than the full engagement speed, and the full engagement speed is the speed of the silicone oil fan at the full engagement critical point.

[0055] In this embodiment, the preset target speed is pre-set based on the hardware parameters and / or experimental data of the silicone oil fan. The preset target speed is less than the full engagement speed, which is the speed of the silicone oil fan in the full engagement state.

[0056] In a specific example, for a silicone oil fan, we tried setting the preset target speed to 800 rpm, 750 rpm, 700 rpm, 650 rpm, and 600 rpm. When the fan speed setting was adjusted to 800 rpm, 750 rpm, 700 rpm, and 650 rpm respectively, the silicone oil fan exhibited drastic speed fluctuations. When the fan speed setting was adjusted to 600 rpm, as shown... Figure 9 As shown, the real-time speed of the silicone oil fan tends to stabilize, and at this time, the real-time speed and the fan speed setting value follow well.

[0057] In this embodiment, the method of reducing the speed is simple to operate. Reducing the fan speed setting can effectively reduce engine noise and improve the noise, vibration and harshness (NVH) of the whole vehicle. Reducing the fan speed setting can also reduce engine fuel consumption and improve fuel economy.

[0058] However, directly reducing the fan speed carries a risk: will lowering the speed of the silicone oil fan cause the engine to overheat? Tests show that when most silicone oil fans run continuously at 600 rpm for 4170 seconds, the final engine temperature is 81.3℃, which meets the engine's requirements. Therefore, appropriately lowering the engine's set speed to avoid full fan engagement is a feasible method.

[0059] In one embodiment, a second method is proposed, which utilizes the characteristic curve of slip thermal protection to avoid the silicone oil fan being in the full engagement critical point condition.

[0060] Specifically, based on preset speed information and / or real-time speed, the real-time speed of the silicone oil fan is adjusted. The process is as follows: compare the real-time speed with the slip thermal speed range; if the real-time speed falls within the slip thermal speed range, activate the slip thermal protection of the silicone oil fan; adjust the real-time speed of the silicone oil fan through the slip thermal protection. The preset speed information includes the slip thermal speed range, which is set according to the slip thermal characteristics of the engine and the silicone oil fan.

[0061] In this embodiment, the slip thermal protection is implemented when the engine and fan speeds differ. Within a specific range of engine and fan speed settings, if the slip heat generated by the fan clutch exceeds the clutch's heat dissipation limit, it can easily damage the clutch. To reduce thermal friction damage from the electronically controlled silicone oil fan in this specific area, the slip thermal protection function will cause the target fan speed to avoid this area, thus preventing overheating and damage to the clutch.

[0062] In this embodiment, the slip thermal protection characteristic can be used to adjust the speed of the silicone oil fan and avoid drastic fluctuations in fan speed.

[0063] In one embodiment, the slip thermal speed range includes a slip thermal upper limit curve and a slip thermal lower limit curve. The slip thermal upper limit curve includes the maximum slip speed, and the slip thermal lower limit curve includes the minimum slip speed. The comparison between the real-time speed and the slip thermal speed range is implemented as follows: Obtain the preset fan speed setting value for the silicone oil fan; if the fan speed setting value is greater than the maximum slip speed, compare the real-time speed with the slip thermal upper limit curve; if the fan speed setting value is less than the minimum slip speed, compare the real-time speed with the slip thermal lower limit curve.

[0064] In this embodiment, the slip thermal speed range includes an upper slip thermal limit curve and a lower slip thermal limit curve. The upper slip thermal limit curve is set according to the upper speed limit determined by the slip thermal characteristics of the silicone oil fan, and the lower slip thermal limit curve is set according to the lower speed limit determined by the slip thermal characteristics of the silicone oil fan. The upper and lower slip thermal limit curves form a closed curve. In a specific example, for a silicone oil fan, the full engagement speed is 930 rpm. Figure 10 The slip thermal speed range shown has the engine speed on the horizontal axis and the silicone oil fan speed on the vertical axis. The slip thermal speed range pulls the lower limit curve to 600 rpm and the upper limit curve to greater than or equal to 930 rpm, so that the fan always works in a fully engaged state. However, if it enters the slip thermal speed range, the slip thermal protection is activated to prevent the silicone oil fan from experiencing large speed fluctuations at the full engagement critical point.

[0065] In one embodiment, if the real-time speed falls within the slip thermal speed range, the slip thermal protection of the silicone oil fan is activated. The specific implementation process is as follows: based on the same engine speed, if the real-time speed is less than the corresponding slip thermal upper limit value in the slip thermal upper limit curve, the slip thermal protection of the silicone oil fan is activated; or, based on the same engine speed, if the real-time speed is greater than the corresponding slip thermal lower limit value in the slip thermal lower limit curve, the slip thermal protection of the silicone oil fan is activated.

[0066] In this embodiment, as Figure 11 The diagram shown illustrates the logic processing of slip thermal speed range and fan speed.

[0067] First, the fan speed setpoint is compared with both the maximum and minimum slip speeds. A logic switch determines whether to use the upper or lower slip thermal limit curve. When the fan speed setpoint is less than the minimum slip speed, the logic switch outputs 0, using the lower slip thermal limit curve; when the fan speed setpoint is greater than the maximum slip speed, the output is 1, using the upper slip thermal limit curve. When the real-time speed of the silicone oil fan enters the slip thermal limit range, the slip thermal protection switch is activated, initiating the slip thermal protection function to prevent drastic fluctuations in the silicone oil fan speed.

[0068] In this embodiment, the slip-slip thermal protection requires some parameters to be preset. A specific example is... Figure 12The parameter setting example diagram shows that the maximum slip speed (denoted as Fans_nThresMax_C) is set to 600 rpm, the minimum slip speed (denoted as Fans_nThresMin_C) is set to 550 rpm, and the fan start-up adjustment time (denoted as Fans_tiDebOnSlip_C) and stop adjustment time (denoted as Fans_tiDebOffSlip_C) are both set to 2000 milliseconds (ms). When the actual fan speed is greater than 550 rpm but less than 600 rpm, the upper limit is used, which means that the silicone oil fan works in a fully engaged state, but the slip thermal protection is activated. When the silicone oil fan speed is less than 550 rpm, the lower limit of the slip thermal protection is used to avoid working at the fully engaged operating point.

[0069] Based on the above settings, an experiment was conducted on the operation of the silicone oil fan, such as... Figure 13 The example diagram showing fan speed utilizing slip differential thermal protection demonstrates that the fan's set speed is 1080 rpm, while its real-time speed remains stable at 930 rpm. This is because the speed ratio between the silicone oil fan and the crankshaft is 1.2:1. With the engine speed at 900 rpm, the fully engaged speed would be 1080 rpm. However, due to internal resistance within the silicone oil fan, the actual maximum engagement speed is only 930 rpm. At this point, the silicone oil fan operates in full engagement, and thanks to the slip differential thermal protection feature, its speed remains stable without fluctuations. Furthermore, slip differential thermal protection helps prevent the engine from overheating.

[0070] In one embodiment, reducing the rotational speed and employing slip thermal protection can be used in combination.

[0071] Specifically, after adjusting the real-time speed of the silicone oil fan to the set fan speed value, the process also includes: obtaining the engine temperature; if the engine temperature is greater than a preset temperature threshold, comparing the real-time speed with the slip thermal speed range; if the real-time speed is within the slip thermal speed range, activating the slip thermal protection of the silicone oil fan; and adjusting the real-time speed of the silicone oil fan through the slip thermal protection, wherein the slip thermal speed range is set according to the slip thermal characteristics of the engine and the silicone oil fan.

[0072] In this embodiment, reducing the set speed results in less noise and lower fuel consumption; the slip thermal protection prevents engine overheating. Combining these two methods achieves even better regulation.

[0073] More specifically, such as Figure 14 The diagram showing an example of silicone oil fan speed regulation demonstrates that when the silicone oil fan speed experiences significant periodic fluctuations, the system first determines whether the fluctuation falls within the preset full-mesh speed range. If not, the silicone oil fan speed is directly adjusted using PID control. If so, the silicone oil fan speed is directly reduced using the preset target speed.

[0074] After the engine speed decreases, it is determined whether the engine temperature exceeds the temperature threshold. If not, the goal of reducing speed fluctuations has been achieved. If so, the stage of adjustment using slip thermal protection is initiated. The full engagement speed of the silicone oil fan is determined, and then a pre-established slip thermal speed range is obtained. The slip thermal speed range map is input into the PID controller. The real-time speed of the silicone oil fan is monitored to determine whether the speed fluctuation is significant. If it is not significant, no further speed adjustment is needed. If it is significant, the real-time speed of the silicone oil fan is adjusted through slip thermal protection, and PID control is performed to reduce speed fluctuations.

[0075] The present invention provides a silicone oil fan control method, apparatus, device, storage medium, and engine, which acquires the real-time rotational speed of the silicone oil fan; determines whether the real-time rotational speed falls within a preset full-mesh speed range, wherein the full-mesh speed range is preset based on the full-mesh critical point operating condition of the silicone oil fan; if the real-time rotational speed falls within the full-mesh speed range, adjusts the real-time rotational speed of the silicone oil fan based on preset speed information and / or the real-time rotational speed, so that the real-time rotational speed does not fall within the full-mesh speed range, wherein the preset speed information is preset based on the performance of the silicone oil fan. In the above process, by comparing the real-time rotational speed with the full-mesh speed range, the real-time rotational speed of the silicone oil fan is adjusted, thereby avoiding drastic speed fluctuations caused by the silicone oil fan operating at full-mesh speed, and achieving stable operation of the silicone oil fan.

[0076] This invention provides two specific methods for speed regulation. The first method directly reduces the fan speed setpoint, preventing the silicone oil fan from operating at the critical point of full engagement and avoiding drastic fluctuations in fan speed. This effectively reduces noise and fuel consumption. The second method utilizes the slip thermal protection characteristic to control the fan speed away from the critical point of full engagement, effectively preventing speed fluctuations at this point. These two methods can be used in combination to further improve the regulation effect.

[0077] The silicone oil fan control device provided by the present invention is described below. The silicone oil fan control device described below can be referred to in correspondence with the silicone oil fan control method described above. Figure 15 As shown, the silicone oil fan control device includes:

[0078] The acquisition module 1501 is used to acquire the real-time speed of the silicone oil fan;

[0079] The judgment module 1502 is used to determine whether the real-time speed belongs to the preset full meshing speed range, wherein the full meshing speed range is preset according to the full meshing critical point working condition of the silicone oil fan.

[0080] The adjustment module 1503 is used to adjust the real-time speed of the silicone oil fan based on preset speed information and / or real-time speed if the real-time speed is within the full meshing speed range, so that the real-time speed is not within the full meshing speed range. The preset speed information is preset according to the performance of the silicone oil fan.

[0081] In one embodiment, the adjustment module 1503 is used to determine a preset target speed as a fan speed setting value; and adjust the real-time speed of the silicone oil fan to the fan speed setting value. The preset speed information includes the preset target speed, wherein the preset target speed is less than the full engagement speed, and the full engagement speed is the speed of the silicone oil fan at the full engagement critical point.

[0082] In one embodiment, the adjustment module 1503 is used to compare the real-time speed with the slip thermal speed range; if the real-time speed falls within the slip thermal speed range, the slip thermal protection of the silicone oil fan is activated; and the real-time speed of the silicone oil fan is adjusted through the slip thermal protection. The preset speed information includes the slip thermal speed range, wherein the slip thermal speed range is set according to the slip thermal characteristics of the engine and the silicone oil fan.

[0083] In one embodiment, the adjustment module 1503 is used to obtain a preset fan speed setting value for the silicone oil fan; if the fan speed setting value is greater than the maximum slip speed, the real-time speed is compared with the slip thermal upper limit curve; if the fan speed setting value is less than the minimum slip speed, the real-time speed is compared with the slip thermal lower limit curve. The slip thermal speed range includes the slip thermal upper limit curve and the slip thermal lower limit curve, the slip thermal upper limit curve includes the maximum slip speed, and the slip thermal lower limit curve includes the minimum slip speed.

[0084] In one embodiment, the adjustment module 1503 is used to activate the slip thermal protection of the silicone oil fan if the real-time speed is less than the slip thermal upper limit value corresponding to the slip thermal upper limit curve based on the same engine speed; or, if the real-time speed is greater than the slip thermal lower limit value corresponding to the slip thermal lower limit curve based on the same engine speed, the slip thermal protection of the silicone oil fan is activated.

[0085] In one embodiment, the adjustment module 1503 is further configured to adjust the real-time speed of the silicone oil fan to the set fan speed value, and then obtain the engine temperature; if the engine temperature is greater than a preset temperature threshold, compare the real-time speed with the slip thermal speed range; if the real-time speed is within the slip thermal speed range, activate the slip thermal protection of the silicone oil fan; and adjust the real-time speed of the silicone oil fan through the slip thermal protection, wherein the slip thermal speed range is set according to the slip thermal characteristics of the engine and the silicone oil fan.

[0086] Figure 16 An example is a schematic diagram of the physical structure of an electronic device, such as... Figure 16As shown, the electronic device may include: a processor 1601, a communication interface 1602, a memory 1603, and a communication bus 1604. The processor 1601, communication interface 1602, and memory 1603 communicate with each other via the communication bus 1604. The processor 1601 can call logic instructions in the memory 1603 to execute a silicone oil fan control method. This method includes: acquiring the real-time speed of the silicone oil fan; determining whether the real-time speed falls within a preset full-meshing speed range, wherein the full-meshing speed range is preset based on the full-meshing critical point operating condition of the silicone oil fan; if the real-time speed falls within the full-meshing speed range, adjusting the real-time speed of the silicone oil fan based on preset speed information and / or the real-time speed, so that the real-time speed does not fall within the full-meshing speed range, wherein the preset speed information is preset based on the performance of the silicone oil fan.

[0087] Furthermore, the logical instructions in the aforementioned memory 1603 can be implemented as software functional units and, when sold or used as independent products, can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0088] On the other hand, the present invention also provides a computer program product, the computer program product including a computer program stored on a non-transitory computer-readable storage medium, the computer program including program instructions, when the program instructions are executed by a computer, the computer is able to execute the silicone oil fan control method provided in the above embodiments, the method including: acquiring the real-time speed of the silicone oil fan; determining whether the real-time speed is within a preset full-meshing speed range, wherein the full-meshing speed range is preset according to the full-meshing critical point operating condition of the silicone oil fan; if the real-time speed is within the full-meshing speed range, adjusting the real-time speed of the silicone oil fan based on preset speed information and / or the real-time speed, so that the real-time speed is not within the full-meshing speed range, wherein the preset speed information is preset according to the performance of the silicone oil fan.

[0089] In another aspect, the present invention also provides a non-transitory computer-readable storage medium storing a computer program thereon. When the computer program is executed by a processor, it implements the silicone oil fan control method provided in the above embodiments. The method includes: acquiring the real-time rotational speed of the silicone oil fan; determining whether the real-time rotational speed falls within a preset full-meshing rotational speed range, wherein the full-meshing rotational speed range is preset based on the full-meshing critical point operating condition of the silicone oil fan; if the real-time rotational speed falls within the full-meshing rotational speed range, adjusting the real-time rotational speed of the silicone oil fan based on preset rotational speed information and / or the real-time rotational speed so that the real-time rotational speed does not fall within the full-meshing rotational speed range, wherein the preset rotational speed information is preset based on the performance of the silicone oil fan.

[0090] In another aspect, the present invention also provides an engine including a silicone oil fan, wherein the silicone oil fan is controlled by the silicone oil fan control method provided in any of the above embodiments, the method comprising: acquiring the real-time rotational speed of the silicone oil fan; determining whether the real-time rotational speed falls within a preset full-meshing rotational speed range, wherein the full-meshing rotational speed range is preset based on the full-meshing critical point operating condition of the silicone oil fan; if the real-time rotational speed falls within the full-meshing rotational speed range, adjusting the real-time rotational speed of the silicone oil fan based on preset rotational speed information and / or the real-time rotational speed, so that the real-time rotational speed does not fall within the full-meshing rotational speed range, wherein the preset rotational speed information is preset based on the performance of the silicone oil fan.

[0091] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0092] Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus necessary general-purpose hardware platforms, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solutions, in essence or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments or some parts of the embodiments.

[0093] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for controlling a silicone oil fan, characterized in that, include: Obtain the real-time speed of the silicone oil fan; Determine whether the real-time speed belongs to the preset full engagement speed range, wherein the full engagement speed range is preset based on the full engagement critical point operating condition of the silicone oil fan, and the full engagement speed range is preset based on the hardware parameters and / or experimental data of the silicone oil fan. If the real-time speed is within the full engagement speed range, the real-time speed of the silicone oil fan is adjusted based on preset speed information and / or the real-time speed so that the real-time speed is not within the full engagement speed range, wherein the preset speed information is preset according to the performance of the silicone oil fan; The preset speed information includes a slip thermal speed range, wherein the slip thermal speed range is set according to the slip thermal characteristics of the engine and the silicone oil fan; the slip thermal speed range includes a slip thermal upper limit curve and a slip thermal lower limit curve, the slip thermal upper limit curve includes the maximum slip speed, and the slip thermal lower limit curve includes the minimum slip speed; The step of adjusting the real-time speed of the silicone oil fan based on preset speed information and / or the real-time speed includes: Obtain the preset fan speed setting value of the silicone oil fan; If the fan speed setpoint is greater than the maximum slip speed, compare the real-time speed with the slip thermal limit curve; If the fan speed setting is less than the minimum slip speed, compare the real-time speed with the slip thermal lower limit curve; If the real-time speed falls within the slip thermal speed range, the slip thermal protection of the silicone oil fan is activated; wherein, when the slip thermal protection is activated, the start-up adjustment time and stop adjustment time of the fan are both set to 2000 milliseconds; The real-time speed of the silicone oil fan is adjusted by the slip thermal protection.

2. The silicone oil fan control method according to claim 1, characterized in that, The preset speed information includes a preset target speed, wherein the preset target speed is less than the full meshing speed, and the full meshing speed is the speed of the silicone oil fan at the full meshing critical point. The step of adjusting the real-time speed of the silicone oil fan based on preset speed information and / or the real-time speed includes: The preset target speed is determined to be the fan speed setting value; Adjust the real-time speed of the silicone oil fan to the set fan speed value.

3. The silicone oil fan control method according to claim 1, characterized in that, If the real-time rotational speed falls within the slip thermal speed range, the slip thermal protection of the silicone oil fan is activated, including: Based on the same engine speed, if the real-time speed is less than the corresponding slip thermal limit value in the slip thermal limit curve, the slip thermal protection of the silicone oil fan is activated; Alternatively, based on the same engine speed, if the real-time speed is greater than the corresponding slip thermal lower limit value in the slip thermal lower limit curve, the slip thermal protection of the silicone oil fan is activated.

4. The silicone oil fan control method according to claim 2, characterized in that, After adjusting the real-time speed of the silicone oil fan to the set fan speed value, the method further includes: Obtain engine temperature; If the engine temperature is greater than a preset temperature threshold, compare the real-time speed with the slip thermal speed range; If the real-time rotation speed falls within the slip thermal speed range, the slip thermal protection of the silicone oil fan is activated; The real-time speed of the silicone oil fan is adjusted by the slip thermal protection, wherein the slip thermal speed range is set according to the slip thermal characteristics of the engine and the silicone oil fan.

5. A silicone oil fan control device, characterized in that, include: The acquisition module is used to acquire the real-time speed of the silicone oil fan; The judgment module is used to determine whether the real-time speed belongs to the preset full meshing speed range, wherein the full meshing speed range is preset according to the full meshing critical point working condition of the silicone oil fan, and the full meshing speed range is preset according to the hardware parameters and / or experimental data of the silicone oil fan. An adjustment module is used to adjust the real-time speed of the silicone oil fan based on preset speed information and / or the real-time speed if the real-time speed is within the full engagement speed range, so that the real-time speed is not within the full engagement speed range, wherein the preset speed information is preset according to the performance of the silicone oil fan; The preset speed information includes a slip thermal speed range, wherein the slip thermal speed range is set according to the slip thermal characteristics of the engine and the silicone oil fan; the slip thermal speed range includes a slip thermal upper limit curve and a slip thermal lower limit curve, the slip thermal upper limit curve includes the maximum slip speed, and the slip thermal lower limit curve includes the minimum slip speed; the adjustment module is specifically used to obtain a preset fan speed setting value for the silicone oil fan; if the fan speed setting value is greater than the maximum slip speed, compare the real-time speed with the slip thermal upper limit curve; if the fan speed setting value is less than the minimum slip speed, compare the real-time speed with the slip thermal lower limit curve; if the real-time speed falls within the slip thermal speed range, activate the slip thermal protection of the silicone oil fan; adjust the real-time speed of the silicone oil fan through the slip thermal protection; wherein, when the slip thermal protection is activated, the start-up adjustment time and stop-up adjustment time of the fan are both set to 2000 milliseconds.

6. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the program, it implements the silicone oil fan control method as described in any one of claims 1 to 4.

7. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the silicone oil fan control method as described in any one of claims 1 to 4.

8. An engine comprising a silicone oil fan, characterized in that, The silicone oil fan is controlled by the silicone oil fan control method according to any one of claims 1 to 4.

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