Electrically Controlled Silicone Oil Fan Control Method, Device, Equipment and Readable Storage Medium

Abstract

An embodiment of the present invention provides an electronic control silicone oil fan control method, device, equipment and readable storage medium, including: obtaining the engine speed, the average engine load rate and the coolant temperature in real time; determining the input speed of the electronic control silicone oil fan according to the engine speed and the transmission speed ratio of the electronic control silicone oil fan; determining a transmission correction factor according to the input speed, determining a load correction factor according to the average engine load rate, and determining a temperature correction factor according to the coolant temperature; using the transmission correction factor, the load correction factor, and the temperature correction factor to determine the full engagement critical speed adjustment ratio, and determining the full engagement critical speed according to the input speed and the full engagement critical speed adjustment ratio; determining the target speed according to the full engagement critical speed; controlling the silicone oil injection amount of the electronic control silicone oil fan so that the electronic control silicone oil fan operates at the target speed.

Description

Technical Field

[0001] The present invention relates to the field of computer technology, and particularly to a control method, device, equipment and readable storage medium for an electronically controlled silicone oil fan. Background Art

[0002] A silicone oil fan is a structure on a motor vehicle used to cool an intercooler in an engine system. The silicone oil fan is connected and rotated through an input shaft of an active structure to an engine crankshaft, and silicone oil is injected into a cavity between the active structure and a driven structure, and the high shear viscosity of the silicone oil is used to drive the driven structure and the heat dissipation blades connected to the driven structure to rotate. The silicone oil fan controls the magnitude of the shear viscosity provided by the silicone oil by using different amounts of silicone oil in the cavity, thereby realizing the adjustment of the rotational speed of the heat dissipation blades.

[0003] During the operation of an electronically controlled silicone oil fan, when the target operating speed of the electronically controlled silicone oil fan is greater than the maximum speed of the silicone oil fan corresponding to the current engine speed, since the actual speed of the electronically controlled silicone oil fan cannot reach the target operating speed, then the electronically controlled silicone oil fan will inject too much silicone oil into the cavity in order to increase the actual speed, resulting in the electronically controlled silicone oil fan entering the full engagement state. After entering the full engagement state, if the target operating speed of the electronically controlled silicone oil fan is reduced at this time, then due to too much silicone oil in the cavity, it is difficult for the electronically controlled silicone oil fan to disengage and it is difficult to reduce the actual speed, resulting in a situation where the operating state of the electronically controlled silicone oil fan is out of control. Since the torque required for the silicone oil fan to rotate at the maximum speed corresponding to the engine speed is relatively large, the full engagement state of the silicone oil fan will affect the fuel economy and power performance of the whole vehicle. In addition, the higher the rotational speed of the silicone oil fan, the greater the noise generated, so the full engagement state of the silicone oil fan will also affect the comfort of the user driving the motor vehicle. Summary of the Invention

[0004] Embodiments of the present invention provide a control method, device, equipment and readable storage medium for an electronically controlled silicone oil fan, so as to reduce the problem that the electronically controlled silicone oil fan affects the fuel economy, power performance and comfort of a motor vehicle by working in a full engagement state.

[0005] Embodiments of the present invention provide a control method for an electronically controlled silicone oil fan, including:

[0006] Obtaining the engine speed, the average engine load rate and the coolant temperature in real time;

[0007] Determining the input speed of the electronically controlled silicone oil fan according to the engine speed and the transmission ratio of the electronically controlled silicone oil fan;

[0008] Determining a transmission correction factor according to the input speed, determining a load correction factor according to the average engine load rate, and determining a temperature correction factor according to the coolant temperature;

[0009] Determine the adjustment ratio of the full-engagement critical speed using the transmission correction factor, the load correction factor, and the temperature correction factor, and determine the full-engagement critical speed according to the input speed and the adjustment ratio of the full-engagement critical speed;

[0010] Determine the target speed according to the full-engagement critical speed;

[0011] Control the silicone oil injection amount of the electronically controlled silicone oil fan so that the electronically controlled silicone oil fan operates at the target speed.

[0012] Optionally, the determining the target speed according to the full-engagement critical speed includes:

[0013] If the preset speed is less than the full-engagement critical speed, determine the preset speed as the target speed;

[0014] If the preset speed is greater than or equal to the full-engagement critical speed and the current coolant temperature is less than or equal to the preset temperature, determine the full-engagement critical speed as the target speed;

[0015] If the preset speed is greater than or equal to the full-engagement critical speed and the current coolant temperature is greater than the preset temperature, determine the input speed as the target speed.

[0016] Optionally, the temperature correction factor includes the current actual temperature correction factor and the temperature change correction factor;

[0017] The determining the temperature correction factor according to the coolant temperature includes:

[0018] Determine the current actual temperature correction factor according to the current coolant temperature;

[0019] Determine the current coolant temperature change rate according to the coolant temperature within a preset duration up to the current moment, and determine the temperature change correction factor according to the current coolant temperature change rate.

[0020] Optionally, the transmission correction factor includes the slip rate and the offset correction factor of the electronically controlled silicone oil fan;

[0021] The determining the transmission correction factor according to the input speed includes:

[0022] Determine the slip rate according to the input speed using the pre-calibrated relationship of the slip rate change of the electronically controlled silicone oil fan;

[0023] Determine the offset correction factor according to the input speed using the pre-calibrated relationship of the offset change of the full-engagement critical speed.

[0024] Optionally, determining the adjustment ratio of the full-engagement critical speed using the transmission correction factor, the load correction factor, and the temperature correction factor includes:

[0025] Determining a first speed adjustment ratio of the silicone oil fan using the transmission correction factor, the load correction factor, and the temperature correction factor;

[0026] If the first speed adjustment ratio is greater than or equal to the second speed adjustment ratio and less than or equal to the third speed adjustment ratio, determining the first speed adjustment ratio as the adjustment ratio of the full-engagement critical speed;

[0027] If the first speed adjustment ratio is less than the second speed adjustment ratio, determining the second speed adjustment ratio as the adjustment ratio of the full-engagement critical speed;

[0028] If the first speed adjustment ratio is greater than the third speed adjustment ratio, determining the third speed adjustment ratio as the adjustment ratio of the full-engagement critical speed;

[0029] Wherein, the second speed adjustment ratio and the third speed adjustment ratio are preset speed adjustment ratios, and the second speed adjustment ratio is less than the third speed adjustment ratio.

[0030] Optionally, the transmission speed ratio of the electronically controlled silicone oil fan is determined by the following method:

[0031] When it is determined that the engine is in a cold start state and the cumulative number of cold starts of the engine is less than a preset threshold, obtaining the engine speed and the speed of the silicone oil fan;

[0032] Determining a measured transmission speed ratio according to the engine speed and the speed of the electronically controlled silicone oil fan;

[0033] When the cumulative number of cold starts of the engine is greater than or equal to the preset threshold, determining the transmission speed ratio according to each of the measured transmission speed ratios.

[0034] Optionally, controlling the silicone oil injection amount of the electronically controlled silicone oil fan so that the electronically controlled silicone oil fan operates at the target speed includes:

[0035] If the current speed of the electronically controlled silicone oil fan is less than or equal to the target speed, opening the silicone oil valve of the electronically controlled silicone oil fan to allow silicone oil to be injected into the electronically controlled silicone oil fan to increase the speed of the electronically controlled silicone oil fan;

[0036] If the current speed of the electronically controlled silicone oil fan is greater than the target speed, closing the silicone oil valve of the electronically controlled silicone oil fan to prevent silicone oil from being injected into the electronically controlled silicone oil fan to reduce the speed of the electronically controlled silicone oil fan.

[0037] Based on the same inventive concept, an embodiment of the present invention further provides an electronically controlled silicone oil fan control device, including:

[0038] A data acquisition module for real-time acquisition of the engine speed, the average engine load rate, and the coolant temperature;

[0039] A speed calculation module for determining the input speed of the electronically controlled silicone oil fan based on the engine speed and the transmission speed ratio of the electronically controlled silicone oil fan; determining a transmission correction factor based on the input speed, a load correction factor based on the average engine load rate, and a temperature correction factor based on the coolant temperature; determining a full-engagement critical speed adjustment ratio using the transmission correction factor, the load correction factor, and the temperature correction factor, determining the full-engagement critical speed based on the input speed and the full-engagement critical speed adjustment ratio; and determining the target speed based on the full-engagement critical speed;

[0040] A control module for controlling the silicone oil injection amount of the electronically controlled silicone oil fan so that the electronically controlled silicone oil fan operates at the target speed.

[0041] Based on the same inventive concept, an embodiment of the present invention further provides a device, including: a processor and a memory for storing instructions executable by the processor;

[0042] Wherein, the processor is configured to execute the instructions to implement the electronically controlled silicone oil fan control method.

[0043] Based on the same inventive concept, an embodiment of the present invention further provides a readable storage medium storing a computer program, and the computer program is used to implement the electronically controlled silicone oil fan control method. The beneficial effects of the present invention are as follows:

[0044] The electronically controlled silicone oil fan control method, device, equipment, and readable storage medium provided by the embodiments of the present invention comprehensively consider the influence factors such as the transmission efficiency between the electronically controlled silicone oil fan and the engine, the engine load, and the coolant temperature on the demand for the coolant cooling efficiency, obtain the full-engagement critical speed, and determine the final target speed based on the given full-engagement critical speed and control the electronically controlled silicone oil fan to operate at the target speed, thereby reducing the probability of the electronically controlled silicone oil fan entering the full-engagement state, and further improving the performance of the motor vehicle in terms of power, economy, and noise control under most working conditions. Description of the Drawings

[0045] Figure 1 It is a flowchart of the electronically controlled silicone oil fan control method provided by an embodiment of the present invention;

[0046] Figure 2 It is one of the partial flowcharts of the electronically controlled silicone oil fan control method provided by an embodiment of the present invention;

[0047] Figure 3 This is the second partial flowchart of the electronic control silicone oil fan control method provided by the embodiment of the present invention;

[0048] Figure 4 This is the control strategy diagram of the electronic control silicone oil fan control method provided by the embodiment of the present invention;

[0049] Figure 5 This is the third partial flowchart of the electronic control silicone oil fan control method provided by the embodiment of the present invention;

[0050] Figure 6 This is the fourth partial flowchart of the electronic control silicone oil fan control method provided by the embodiment of the present invention;

[0051] Figure 7 This is the structural schematic diagram of the electronic control silicone oil fan control device provided by the embodiment of the present invention;

[0052] Figure 8 This is the structural schematic diagram of the equipment provided by the embodiment of the present invention. Detailed implementation manners

[0053] To make the above objects, features, and advantages of the present invention more obvious and understandable, the present invention will be further described below in conjunction with the drawings and embodiments. However, the exemplary embodiments can be implemented in various forms and should not be construed as limited to the embodiments described herein; on the contrary, these embodiments make the present invention more comprehensive and complete, and convey the concept of the exemplary embodiments to those skilled in the art in an all-round way. The same reference numerals in the drawings represent the same or similar structures, so the repeated description thereof will be omitted. The words expressing positions and directions described in the present invention are all illustrated with the drawings as examples, but can be changed according to needs, and all changes made are included in the protection scope of the present invention. The drawings of the present invention are only used to illustrate the relative position relationship and do not represent the true proportion.

[0054] It should be noted that specific details are set forth in the following description to facilitate a thorough understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar generalizations without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific implementation manners disclosed below. The subsequent description of the specification is the preferred implementation manner for implementing the present application, but the description is for the purpose of illustrating the general principles of the present application and is not used to limit the scope of the present application. The protection scope of the present application shall be defined by the appended claims.

[0055] The following specifically describes the electronic control silicone oil fan control method, device, equipment, and readable storage medium provided by the embodiments of the present invention in conjunction with the drawings.

[0056] An embodiment of the present invention provides an electronic control method for a silicone oil fan, as Figure 1 shown, including:

[0057] S110. Obtain the engine speed, the average engine load rate, and the coolant temperature in real time.

[0058] S120. Determine the input speed of the silicone oil fan according to the engine speed and the transmission speed ratio of the electronic control silicone oil fan.

[0059] S130. Determine a transmission correction factor according to the input speed, determine a load correction factor according to the average engine load rate, and determine a temperature correction factor according to the coolant temperature.

[0060] S140. Use the transmission correction factor, the load correction factor, and the temperature correction factor to determine the full engagement critical speed adjustment ratio, and determine the full engagement critical speed according to the input speed and the full engagement critical speed adjustment ratio.

[0061] In a specific implementation process, the transmission correction factor, the load correction factor, and the coolant temperature correction factor can respectively determine specific values through pre-calibrated corresponding relationships. That is, the transmission correction factor is determined according to the input speed by using the pre-calibrated corresponding relationship between the input speed and the transmission correction factor, the load correction factor is determined according to the average engine load rate by using the pre-calibrated corresponding relationship between the average engine load rate and the load correction factor, and the temperature correction factor is determined according to the coolant temperature by using the pre-calibrated corresponding relationship between the coolant temperature and the temperature correction factor. Among them, the corresponding relationship between the input speed and the transmission correction factor satisfies the principle that when other parameters are the same, the greater the input speed, the greater the value of the transmission correction factor will make the full engagement critical speed. The corresponding relationship between the average engine load rate and the load correction factor satisfies the principle that when other parameters are the same, the greater the average engine load rate, the greater the value of the load correction factor will make the full engagement critical speed. The corresponding relationship between the engine coolant temperature and the temperature correction factor satisfies the principle that when other parameters are the same, the greater the relevant parameters of the coolant temperature, the greater the value of the temperature correction factor will make the full engagement critical speed.

[0062] S150. Determine the target speed according to the full engagement critical speed.

[0063] S160. Control the silicone oil injection amount of the electronic control silicone oil fan so that the electronic control silicone oil fan operates at the target speed.

[0064] In this way, in the embodiment of the present invention, by comprehensively considering the requirements of the transmission efficiency between the electronically controlled silicone oil fan and the engine, the engine load, and the coolant temperature and other influencing factors on the coolant cooling efficiency, the fully engaged critical speed is obtained, and the final target speed is determined according to the given fully engaged critical speed, and the electronically controlled silicone oil fan is controlled to operate at the target speed, so as to reduce the probability of the electronically controlled silicone oil fan entering the fully engaged state, and further improve the performance of the motor vehicle in terms of power, economy, and noise control under most working conditions.

[0065] Further, as Figure 2 shown, S150, determining the target speed according to the fully engaged critical speed specifically includes:

[0066] S151. Judge whether the preset speed is less than the fully engaged critical speed.

[0067] If the result of step S151 is yes, execute step S152; if the result of step S151 is no, execute step S153.

[0068] S152. Determine the preset speed as the target speed.

[0069] S153. Judge whether the current coolant temperature is greater than the preset temperature.

[0070] If the result of step S153 is yes, execute step S154; if the result of step S153 is no, execute step S155.

[0071] S154. Determine the input speed as the target speed.

[0072] S155. Determine the fully engaged critical speed as the target speed.

[0073] In this way, in the process of determining the target speed, by selecting the smaller speed as the target speed according to the magnitude relationship between the fully engaged critical speed and the preset speed, the occurrence of the out-of-control situation where the electronically controlled silicone oil fan is difficult to disengage the silicone oil for deceleration due to being in the fully engaged state can be reduced. In addition, while considering the requirement of preventing full engagement, it is also taken into account whether the current coolant temperature is too high and needs to be cooled with the maximum efficiency, so as to cool the coolant as soon as possible when the coolant temperature is too high to ensure the working efficiency of the engine and avoid overheating failures.

[0074] Further, the temperature correction factor includes the current actual temperature correction factor and the temperature change correction factor.

[0075] The determining the temperature correction factor according to the coolant temperature includes:

[0076] Determining the current actual temperature correction factor according to the current coolant temperature;

[0077] Determine the current coolant temperature change rate based on the coolant temperature within a preset duration up to the current moment, and determine the temperature change correction factor according to the current coolant temperature change rate.

[0078] In the specific implementation process, the current actual temperature correction factor can be determined according to the current coolant temperature by using the pre-calibrated correspondence between the coolant temperature and the current actual temperature correction factor, and the temperature change correction factor can be determined according to the current coolant temperature change rate by using the pre-calibrated correspondence between the coolant temperature change rate and the temperature change correction factor. Among them, the correspondence between the coolant temperature and the current actual temperature correction factor satisfies the principle that, under the condition that other parameters are the same, the higher the coolant temperature, the larger the value of the current actual temperature correction factor makes the full engagement critical speed. The correspondence between the coolant temperature change rate and the temperature change correction factor satisfies the principle that, under the condition that other parameters are the same, the higher the coolant temperature change rate (the temperature change rate of temperature rise is recorded as a positive value, and the temperature change rate of temperature drop is recorded as a negative value), the larger the value of the temperature change correction factor makes the full engagement critical speed.

[0079] In this way, in the process of determining the full engagement critical speed according to the coolant temperature, in addition to considering the influence of the current temperature on the rotational speed requirement of the electronically controlled silicone oil fan, the influence of the change trend of the coolant temperature on the rotational speed requirement of the electronically controlled silicone oil fan is also considered, so that a more reasonable full engagement critical speed can be given.

[0080] Further, the transmission correction factor includes the slip rate of the electronically controlled silicone oil fan and the offset correction factor;

[0081] The determining of the transmission correction factor according to the input rotational speed includes:

[0082] Determine the slip rate according to the input rotational speed by using the pre-calibrated slip rate change relationship of the electronically controlled silicone oil fan;

[0083] Determine the offset correction factor according to the input rotational speed by using the pre-calibrated full engagement critical speed offset change relationship.

[0084] Through calibration tests, generally, the slip rate change relationship satisfies the principle that, under the condition that other parameters are the same, the higher the input rotational speed, the larger the slip rate of the electronically controlled silicone oil fan. The full engagement critical speed offset change relationship can consider the phenomenon that the disengagement time of the full engagement state of the electronically controlled silicone oil fan is longer at low input rotational speeds and shorter at higher input rotational speeds of the full engagement state. The calibrated full engagement critical speed offset change relationship satisfies the principle that, under the condition that other parameters are the same, the higher the input rotational speed, the larger the value of the offset correction factor makes the full engagement critical speed.

[0085] Further, to avoid the value of the full engagement critical speed being too large or too small, this problem can be avoided by setting the upper and lower limits of the full engagement critical speed adjustment ratio. As Figure 3 shown, in the step S140, determining the full engagement critical speed adjustment ratio by using the transmission correction factor, the load correction factor, and the temperature correction factor includes:

[0086] S141. Determine a first speed adjustment ratio of the electronically controlled silicone oil fan by using the transmission correction factor, the load correction factor, and the temperature correction factor.

[0087] S142. Determine whether the first speed adjustment ratio is greater than or equal to a second speed adjustment ratio and less than or equal to a third speed adjustment ratio. Wherein, the second speed adjustment ratio and the third speed adjustment ratio are preset speed adjustment ratios, and the second speed adjustment ratio is less than the third speed adjustment ratio.

[0088] If the first speed adjustment ratio is greater than or equal to the second speed adjustment ratio and less than or equal to the third speed adjustment ratio, execute step S143; if the first speed adjustment ratio is less than the second speed adjustment ratio, execute step S144; if the first speed adjustment ratio is greater than the third speed adjustment ratio, execute step S145.

[0089] S143. Determine the first speed adjustment ratio as the full engagement critical speed adjustment ratio.

[0090] S144. Determine the second speed adjustment ratio as the full engagement critical speed adjustment ratio.

[0091] S145. Determine the third speed adjustment ratio as the full engagement critical speed adjustment ratio.

[0092] The following gives an example to illustrate the above solution with the full engagement critical speed adjustment ratio being the ratio of the difference between the input speed and the full engagement critical speed to the input speed.

[0093] As Figure 4 shown, after obtaining the engine speed, the engine average load rate, and the coolant temperature in real time, the target speed is specifically determined through the following steps:

[0094] ① Multiply the engine speed by the transmission speed ratio of the electronically controlled silicone oil fan to obtain the input speed of the silicone oil fan.

[0095] ② Determine the slip rate according to the input speed by using the pre-calibrated slip rate change relationship CUR1 of the electronically controlled silicone oil fan.

[0096] Wherein, the corresponding relationship CUR1 satisfies the rule that the higher the input speed, the greater the slip rate.

[0097] ③Determine the offset correction factor according to the input rotational speed using the pre-calibrated full-engagement critical rotational speed offset change relationship CUR2.

[0098] Among them, in order to match the change relationship of the slip ratio, the corresponding relationship CUR2 can be calibrated to satisfy the law that the higher the input rotational speed, the smaller the offset correction factor under the condition that other parameters are the same. The value range of the offset correction factor is set to [0, 100%].

[0099] ④Subtract the offset correction factor from the slip ratio to obtain the first calculated correction factor.

[0100] ⑤Determine the load correction factor according to the average engine load rate using the pre-calibrated corresponding relationship CUR3 between the average engine load rate and the load correction factor.

[0101] Among them, the corresponding relationship CUR3 satisfies the law that the higher the average engine load rate, the smaller the load correction factor. The value range of the load correction factor is set to [0, 100%].

[0102] ⑥Multiply the first calculated correction factor by the load correction factor to obtain the second calculated correction factor.

[0103] ⑦Determine the current actual temperature correction factor according to the current coolant temperature using the pre-calibrated corresponding relationship CUR4 between the coolant temperature and the current actual temperature correction factor.

[0104] Among them, the corresponding relationship CUR4 satisfies the law that the higher the coolant temperature, the smaller the current actual temperature correction factor. The value range of the current actual temperature correction factor is set to [0, 100%].

[0105] ⑧Determine the current coolant temperature change rate according to the coolant temperature within the preset duration up to the current moment, and determine the temperature change correction factor according to the current coolant temperature change rate using the pre-calibrated corresponding relationship CUR5 between the coolant temperature change rate and the temperature change correction factor.

[0106] Among them, the corresponding relationship CUR5 satisfies the law that the higher the coolant temperature change rate, the smaller the temperature change correction factor. The value range of the temperature change correction factor is set to [0, 100%].

[0107] ⑨Multiply the current actual temperature correction factor by the temperature change correction factor to obtain the third calculated correction factor.

[0108] ⑩Multiply the second correction factor by the third calculated correction factor to obtain the first rotational speed adjustment ratio.

[0109] ⑪ Determine whether the first rotational speed adjustment ratio is greater than or equal to the second rotational speed adjustment ratio and less than or equal to the third rotational speed adjustment ratio: If the first rotational speed adjustment ratio is greater than or equal to the second rotational speed adjustment ratio and less than or equal to the third rotational speed adjustment ratio, output the first rotational speed adjustment ratio; if the first rotational speed adjustment ratio is less than the second rotational speed adjustment ratio, output the second rotational speed adjustment ratio; if the first rotational speed adjustment ratio is greater than the third rotational speed adjustment ratio, output the third rotational speed adjustment ratio.

[0110] ⑫ Subtract the output adjustment ratio from 100% to obtain the full engagement critical speed ratio.

[0111] ⑬ Multiply the input rotational speed by the full engagement critical speed ratio to obtain the full engagement critical speed.

[0112] ⑭ Determine whether the preset rotational speed is less than the full engagement critical speed. If so, output the preset rotational speed; if not, output the full engagement critical speed.

[0113] ⑮ Determine whether the current coolant temperature is greater than the preset temperature. If so, output the input rotational speed; if not, output the full engagement critical speed. Take the finally output result as the target rotational speed.

[0114] It should be noted that the above example is only a feasible implementation method. It is also possible to appropriately change the operation relationship of the correction factors in the calculation process, and then the corresponding change relationship of the values of each correction factor is also changed accordingly. For example, if the full engagement critical speed adjustment ratio is set as the ratio of the full engagement critical speed to the input rotational speed, then step ⑫ is not required in the above process, and the law of each corresponding relationship CUR is also opposite to the content described above.

[0115] When the electronically controlled silicone oil fan is matched with a motor vehicle, due to the different performance parameters of the transmission structures of different vehicle models, when the engine rotational speed is the same, the input shaft rotational speed of the clutch will be different due to the different speed ratios used in the transmission systems of different vehicle models, and the same clutch cannot use the same data. Therefore, it is particularly important to accurately identify the speed ratio and calculate the input shaft rotational speed based on the non-slip condition. Optionally, as Figure 5 shown, the transmission speed ratio of the electronically controlled silicone oil fan is determined by the following method:

[0116] S210. Determine whether the engine is in a cold start state.

[0117] If the result of step S210 is yes, execute step S220; if the result of step S210 is no, continue to wait until the result is yes.

[0118] In the specific implementation process, after obtaining the engine start signal, engine operating condition parameters can be obtained and it can be determined whether the engine is in a cold start state according to the operating condition parameters. The operating condition parameters can specifically include the ambient temperature, oil temperature, coolant temperature, engine speed, etc. during engine operation, which can be collected by various sensors inside the engine.

[0119] S220. Determine whether the cumulative cold start times of the engine are less than a preset threshold.

[0120] If the result of step S220 is yes, execute step S230; if the result of step S220 is no, execute step S250.

[0121] S230. Obtain the engine speed and the silicon oil fan speed.

[0122] S240. Determine the measured transmission speed ratio according to the engine speed and the electronically controlled silicon oil fan speed. After the cold start state of the engine ends, return to step S210.

[0123] S250. Determine the transmission speed ratio according to each of the measured transmission speed ratios.

[0124] In the specific implementation process, in step S250, some mathematical processing can be performed on the measured transmission speed ratio determined during each cold start of the engine to determine the result of the final transmission speed ratio, such as taking the average value, taking the average value after removing the maximum and minimum values, taking the median value, adding a preset empirical value for correction, taking an approximate value, etc. After calculating the transmission speed ratio once, the calculated value can be saved non-volatile (for example, saved to an Erasable Read-Only Memory (EROM)), so that it is not necessary to calculate again when the engine starts again.

[0125] Further, as Figure 6 shown, step S160, controlling the silicon oil injection amount of the electronically controlled silicon oil fan so that the electronically controlled silicon oil fan operates at the target speed, includes:

[0126] S161. Determine whether the current speed of the electronically controlled silicon oil fan is less than or equal to the target speed.

[0127] If the result of step S161 is yes, execute step S162; if the result of step S161 is no, execute step S163.

[0128] S162. Open the silicon oil valve of the electronically controlled silicon oil fan to inject silicon oil into the electronically controlled silicon oil fan to increase the speed of the electronically controlled silicon oil fan.

[0129] S163. Close the silicone oil valve of the electronically controlled silicone oil fan, so that silicone oil cannot be injected into the electronically controlled silicone oil fan to reduce the rotational speed of the electronically controlled silicone oil fan.

[0130] Based on the same inventive concept, an embodiment of the present invention further provides an electronically controlled silicone oil fan control device, as Figure 7 shown, including:

[0131] A data acquisition module M1, configured to acquire the engine speed, the average engine load rate, and the coolant temperature in real time;

[0132] A rotational speed calculation module M2, which determines the input rotational speed of the electronically controlled silicone oil fan according to the engine speed and the transmission speed ratio of the electronically controlled silicone oil fan; determines a transmission correction factor according to the input rotational speed, determines a load correction factor according to the average engine load rate, and determines a temperature correction factor according to the coolant temperature; determines a full engagement critical rotational speed adjustment ratio by using the transmission correction factor, the load correction factor, and the temperature correction factor, determines the full engagement critical rotational speed according to the input rotational speed and the full engagement critical rotational speed adjustment ratio; and determines the target rotational speed according to the full engagement critical rotational speed;

[0133] A control module M3, configured to control the silicone oil injection amount of the electronically controlled silicone oil fan, so that the electronically controlled silicone oil fan operates at the target rotational speed.

[0134] Optionally, the determining the target rotational speed according to the full engagement critical rotational speed includes:

[0135] If the preset rotational speed is less than the full engagement critical rotational speed, then determine the preset rotational speed as the target rotational speed;

[0136] If the preset rotational speed is greater than or equal to the full engagement critical rotational speed, and the current coolant temperature is less than or equal to the preset temperature, then determine the full engagement critical rotational speed as the target rotational speed;

[0137] If the preset rotational speed is greater than or equal to the full engagement critical rotational speed, and the current coolant temperature is greater than the preset temperature, then determine the input rotational speed as the target rotational speed.

[0138] Optionally, the temperature correction factor includes a current actual temperature correction factor and a temperature change correction factor;

[0139] The determining the temperature correction factor according to the coolant temperature includes:

[0140] Determine the current actual temperature correction factor according to the current coolant temperature;

[0141] Determine the current coolant temperature change rate based on the coolant temperature within a preset duration up to the current moment, and determine the temperature change correction factor according to the current coolant temperature change rate.

[0142] Optionally, the transmission correction factor includes the slip ratio of the electronically controlled silicone oil fan and the offset correction factor;

[0143] The determining the transmission correction factor according to the input speed includes:

[0144] Determine the slip ratio according to the input speed using the pre-calibrated relationship between the slip ratio of the electronically controlled silicone oil fan;

[0145] Determine the offset correction factor according to the input speed using the pre-calibrated relationship between the offset change of the full engagement critical speed.

[0146] Optionally, the determining the full engagement critical speed adjustment ratio using the transmission correction factor, the load correction factor, and the temperature correction factor includes:

[0147] Determine the first speed adjustment ratio of the silicone oil fan using the transmission correction factor, the load correction factor, and the temperature correction factor;

[0148] If the first speed adjustment ratio is greater than or equal to the second speed adjustment ratio and less than or equal to the third speed adjustment ratio, determine the first speed adjustment ratio as the full engagement critical speed adjustment ratio;

[0149] If the first speed adjustment ratio is less than the second speed adjustment ratio, determine the second speed adjustment ratio as the full engagement critical speed adjustment ratio;

[0150] If the first speed adjustment ratio is greater than the third speed adjustment ratio, determine the third speed adjustment ratio as the full engagement critical speed adjustment ratio;

[0151] Wherein, the second speed adjustment ratio and the third speed adjustment ratio are preset speed adjustment ratios, and the second speed adjustment ratio is less than the third speed adjustment ratio.

[0152] Optionally, the transmission ratio of the electronically controlled silicone oil fan is determined by the following method:

[0153] When it is determined that the engine is in a cold start state and the cumulative number of cold starts of the engine is less than a preset threshold, obtain the engine speed and the speed of the silicone oil fan;

[0154] Determine the measured transmission ratio according to the engine speed and the speed of the electronically controlled silicone oil fan;

[0155] When the cumulative cold start times of the engine are greater than or equal to a preset threshold, determine the transmission speed ratio according to each of the measured transmission speed ratios.

[0156] Optionally, the control module M3 is specifically configured to:

[0157] If the current speed of the electronically controlled silicone oil fan is less than or equal to the target speed, open the silicone oil valve of the electronically controlled silicone oil fan to allow silicone oil to be injected into the electronically controlled silicone oil fan to increase the speed of the electronically controlled silicone oil fan;

[0158] If the current speed of the electronically controlled silicone oil fan is greater than the target speed, close the silicone oil valve of the electronically controlled silicone oil fan to prevent silicone oil from being injected into the electronically controlled silicone oil fan to reduce the speed of the electronically controlled silicone oil fan.

[0159] It should be understood that the described embodiments of the test device are merely illustrative. For example, the division of the modules is only a logical function division. In actual implementation, there may be other division methods. For example, multiple modules or components can be combined or integrated into another system, or some features can be ignored or not executed. The functional modules in the embodiments can be integrated into one processing module, or each module can exist physically alone, or two or more modules can be integrated into one module. The above integrated modules can be implemented in the form of hardware or in the form of software functional modules. If the integrated module is implemented in the form of a software functional module and sold or used as an independent product, it can be stored in a readable storage medium.

[0160] Since the principle of the electronically controlled silicone oil fan control device to solve the problem is basically the same as that of the electronically controlled silicone oil fan control method, the implementation of the electronically controlled silicone oil fan control device can refer to the implementation of the electronically controlled silicone oil fan control method, which will not be elaborated here.

[0161] Based on the same inventive concept, an embodiment of the present invention further provides an electronic device, as Figure 8 shown, including: a processor 110 and a memory 120 for storing executable instructions of the processor 110; wherein, the processor 110 is configured to execute the instructions to implement the electronically controlled silicone oil fan control method.

[0162] In the specific implementation process, the device may have relatively large differences due to different configurations or performances, and may include one or more processors 110, a memory 120, and a readable storage medium 130. One or more application programs 131 or data 132 are included in the memory 120 and / or the readable storage medium 130. One or more operating systems 133 may also be included in the memory 120 and / or the readable storage medium 130, such as Windows, Mac OS, Linux, IOS, Android, Unix, FreeBSD, etc. Among them, the memory 120 and the readable storage medium 130 may be transient storage or persistent storage. The application program 131 may include one or more of the above-mentioned modules ( Figure 8 not shown in the figure), and each module may include a series of instruction operations. Further, the processor 110 may be configured to communicate with the readable storage medium 130 and execute a series of instruction operations in the readable storage medium 130 on the device. The device may also include one or more power supplies ( Figure 8 not shown in the figure); one or more network interfaces 140, where the network interface 140 includes a wired network interface 141 and / or a wireless network interface 142; and one or more input / output interfaces 143.

[0163] Based on the same inventive concept, an embodiment of the present invention further provides a readable storage medium storing a computer program, and the computer program is used to implement the above-mentioned electronic control silicone oil fan control method.

[0164] The electronic control silicone oil fan control method, device, equipment, and readable storage medium provided by the embodiments of the present invention comprehensively consider the requirements of the cooling efficiency of the coolant for influencing factors such as the transmission efficiency between the electronic control silicone oil fan and the engine, the engine load, and the coolant temperature, obtain the full engagement critical speed, and determine the final target speed according to the given full engagement critical speed and control the electronic control silicone oil fan to work at the target speed, thereby reducing the probability of the electronic control silicone oil fan entering the full engagement state, and further improving the performance of the power, economy, and noise control of the motor vehicle under most working conditions.

[0165] Those skilled in the art should understand that the embodiments of the present application can be provided as a method, a system, or a computer program product. Therefore, the present application can adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware aspects. Moreover, the present application can adopt the form of a computer program product implemented 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.

[0166] This application is described with reference to the flowcharts and / or block diagrams of methods, apparatus (systems), and computer program products according to the present application. It should be understood that each flow and / or block in the flowcharts and / or block diagrams, and combinations of flows and / or blocks in the flowcharts and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to the processors of general-purpose computers, special-purpose computers, embedded processors, or other programmable data processing devices to produce a machine, such that the instructions executed by the processors of the computer or other programmable data processing devices produce means for implementing the functions specified in one flow Figure 1 one flow or more flows and / or blocks Figure 1 means for implementing the functions specified in one block or more blocks.

[0167] These computer program instructions can also be stored in a computer-readable memory that can direct a computer or other programmable data processing device to work in a specific manner, such that the instructions stored in the computer-readable memory produce a manufactured article including instruction means that implement the functions specified in one flow Figure 1 one flow or more flows and / or blocks Figure 1 means for implementing the functions specified in one block or more blocks.

[0168] These computer program instructions can also be loaded onto a computer or other programmable data processing device, such that a series of operation steps are executed on the computer or other programmable device to produce a computer-implemented process, so that the instructions executed on the computer or other programmable device provide steps for implementing the functions specified in one flow Figure 1 one flow or more flows and / or blocks Figure 1 means for implementing the functions specified in one block or more blocks.

[0169] Obviously, those skilled in the art can make various changes and modifications to this application without departing from the spirit and scope of this application. Thus, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalent technologies, this application is also intended to include these changes and modifications.

Claims

1. An electronic control method for a silicone oil fan, characterized in that, Including: Obtaining the engine speed, the average engine load rate, and the coolant temperature in real time; Determining the input speed of the electronically controlled silicone oil fan according to the engine speed and the transmission speed ratio of the electronically controlled silicone oil fan; Determining a load correction factor according to the average engine load rate; And determining a current actual temperature correction factor according to the current coolant temperature, determining a current coolant temperature change rate according to the coolant temperature within a preset duration up to the current moment, and determining a temperature change correction factor according to the current coolant temperature change rate; And determining a slip rate according to the input speed by using a pre-calibrated relationship of slip rate change of the electronically controlled silicone oil fan, and determining an offset correction factor according to the input speed by using a pre-calibrated relationship of full engagement critical speed offset change; Subtracting the offset correction factor from the slip rate to obtain a first calculated correction factor; Multiplying the first calculated correction factor by the load correction factor to obtain a second calculated correction factor; Multiplying the current actual temperature correction factor by the temperature change correction factor to obtain a third calculated correction factor; Multiplying the second calculated correction factor by the third calculated correction factor to obtain a first speed adjustment ratio; If the first speed adjustment ratio is greater than or equal to a second speed adjustment ratio and less than or equal to a third speed adjustment ratio, determining the first speed adjustment ratio as the full engagement critical speed adjustment ratio; if the first speed adjustment ratio is less than the second speed adjustment ratio, then determining the second speed adjustment ratio as the full engagement critical speed adjustment ratio; if the first speed adjustment ratio is greater than the third speed adjustment ratio, then determining the third speed adjustment ratio as the full engagement critical speed adjustment ratio; Determining the full engagement critical speed according to the input speed and the full engagement critical speed adjustment ratio; If the preset speed is less than the full engagement critical speed, then determining the preset speed as the target speed; If the preset speed is greater than or equal to the full engagement critical speed and the current coolant temperature is less than or equal to a preset temperature, then determining the full engagement critical speed as the target speed; If the preset speed is greater than or equal to the full engagement critical speed and the current coolant temperature is greater than the preset temperature, then determining the input speed as the target speed; Controlling the silicone oil injection amount of the electronically controlled silicone oil fan so that the electronically controlled silicone oil fan operates at the target speed; Wherein, the second speed adjustment ratio and the third speed adjustment ratio are preset speed adjustment ratios, and the second speed adjustment ratio is less than the third speed adjustment ratio.

2. The method according to claim 1, characterized in that The transmission speed ratio of the electronically controlled silicone oil fan is determined by the following method: When it is determined that the engine is in a cold start state and the cumulative number of cold starts of the engine is less than a preset threshold, obtaining the engine speed and the silicone oil fan speed; Determining a measured transmission speed ratio according to the engine speed and the silicone oil fan speed; When the cumulative number of cold starts of the engine is greater than or equal to the preset threshold, determining the transmission speed ratio according to each of the measured transmission speed ratios.

3. The method according to any one of claims 1 to 2, characterized in that, Controlling the silicone oil injection amount of the electronically controlled silicone oil fan so that the electronically controlled silicone oil fan operates at the target speed, including: If the current speed of the electronically controlled silicone oil fan is less than or equal to the target speed, open the silicone oil valve of the electronically controlled silicone oil fan to allow silicone oil to be injected into the electronically controlled silicone oil fan to increase the speed of the electronically controlled silicone oil fan; If the current speed of the electronically controlled silicone oil fan is greater than the target speed, close the silicone oil valve of the electronically controlled silicone oil fan to prevent silicone oil from being injected into the electronically controlled silicone oil fan to reduce the speed of the electronically controlled silicone oil fan.

4. An electronically controlled silicone oil fan control device, characterized in that, Comprising: A data acquisition module for real-time acquisition of the engine speed, the average engine load rate, and the coolant temperature; A speed calculation module for determining the input speed of the electronically controlled silicone oil fan according to the engine speed and the transmission speed ratio of the electronically controlled silicone oil fan; determining a load correction factor according to the average engine load rate; And determining a current actual temperature correction factor according to the current coolant temperature, determining a current coolant temperature change rate according to the coolant temperature within a preset time period up to the current moment, and determining a temperature change correction factor according to the current coolant temperature change rate; And determining a slip ratio according to the input speed using a pre-calibrated relationship of slip ratio change of the electronically controlled silicone oil fan, and determining an offset correction factor according to the input speed using a pre-calibrated relationship of full engagement critical speed offset change; Subtract the offset correction factor from the slip ratio to obtain a first calculated correction factor; Multiply the first calculated correction factor by the load correction factor to obtain a second calculated correction factor; Multiply the current actual temperature correction factor by the temperature change correction factor to obtain a third calculated correction factor; Multiply the second calculated correction factor by the third calculated correction factor to obtain a first speed adjustment ratio; if the first speed adjustment ratio is greater than or equal to the second speed adjustment ratio and less than or equal to the third speed adjustment ratio, determine the first speed adjustment ratio as the full engagement critical speed adjustment ratio; if the first speed adjustment ratio is less than the second speed adjustment ratio, then determine the second speed adjustment ratio as the full engagement critical speed adjustment ratio; if the first speed adjustment ratio is greater than the third speed adjustment ratio, then determine the third speed adjustment ratio as the full engagement critical speed adjustment ratio; determine the full engagement critical speed according to the input speed and the full engagement critical speed adjustment ratio; if the preset speed is less than the full engagement critical speed, then determine the preset speed as the target speed; If the preset speed is greater than or equal to the full engagement critical speed and the current coolant temperature is less than or equal to the preset temperature, then determine the full engagement critical speed as the target speed; If the preset speed is greater than or equal to the full engagement critical speed and the current coolant temperature is greater than the preset temperature, then determine the input speed as the target speed; A control module for controlling the silicone oil injection amount of the electronically controlled silicone oil fan so that the electronically controlled silicone oil fan operates at the target speed; Wherein, the second speed adjustment ratio and the third speed adjustment ratio are preset speed adjustment ratios, and the second speed adjustment ratio is less than the third speed adjustment ratio.

5. An electronic device, characterized in that, Comprising: A processor and a memory for storing instructions executable by the processor; wherein the processor is configured to execute the instructions to implement the electronically controlled silicone oil fan control method according to any one of claims 1-3.

6. A readable storage medium, characterized in that, The readable storage medium stores a computer program, and the computer program is used to implement the electronically controlled silicone oil fan control method according to any one of claims 1-3.

Images