Engine oil quality control system and method and vehicle

Abstract

The invention relates to the technical field of vehicles, in particular to an engine oil quality control system and method and a vehicle. The volatilization assembly is arranged on the engine oil pan; and the engine controller is used for controlling the volatilization assembly to execute quality control action when the engine oil of the engine meets any one of a dilution condition and an emulsification condition, and at least one of water and fuel oil in the engine oil is volatilized until the engine oil of the engine does not meet the dilution condition and the emulsification condition. Therefore, the problem of dilution and emulsification of engine oil is solved.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to an engine oil quality control system, method and vehicle. Background Art

[0002] With the deepening of the global energy crisis and the improvement of environmental protection awareness, new energy vehicles, especially hybrid vehicles and plug-in hybrid vehicles, have developed rapidly. Hybrid vehicles are favored by the market for their advantages of energy saving and emission reduction. After starting a traditional fuel vehicle, the engine usually continues to run, and the coolant temperature and oil temperature can rise quickly and remain at a high level. This helps the fuel and water to evaporate from the oil, so traditional models rarely experience oil dilution or emulsification. However, in hybrid models, since the engine is a supplementary energy device, its working mode depends on the demand control strategy of the whole vehicle. In some cases, such as when the vehicle has sufficient power, low power demand or no heating demand, the engine may stop working; it will only start when necessary, and the start time may be very short, even only a dozen seconds. Moreover, at the beginning of each start, the amount of fuel injected into the engine will increase, which makes the problem of oil dilution and emulsification more prominent. Since the engine cannot run stably for a long time, the fuel and water are not easy to evaporate, and the problem of oil dilution and emulsification occurs frequently, affecting the reliability and durability of the engine. Summary of the invention

[0003] The present application provides an engine oil quality control system, method and engine to solve the problem of engine oil dilution and emulsification in the related art.

[0004] A first aspect of the present application provides an engine oil quality control system, comprising: an engine and an engine oil pan; a volatile component arranged on the oil pan; an engine controller, which is used to control the volatile component to perform a quality control action when the engine oil meets any one of the dilution condition and the emulsification condition, by evaporating at least one of the water and fuel in the engine oil until the engine oil no longer meets the dilution condition and the emulsification condition.

[0005] Optionally, the volatilization component includes: a driving motor, a stirring rod and a resistance wire arranged in the stirring rod, wherein the resistance wire heats the engine oil, and the driving motor drives the stirring rod to stir the engine oil.

[0006] Optionally, the surface of the stirring rod is a blade structure.

[0007] Optionally, the quality control action includes: at least one of a heating action of a resistance wire and a stirring action of a stirring rod, the emulsification condition is: the degree of oil emulsification is greater than a preset oil emulsification threshold, and the oil pressure is less than the oil pressure threshold at the current oil temperature / speed of the engine, and the dilution condition is: the degree of oil dilution is greater than a preset oil dilution threshold, and the oil pressure is less than the oil pressure threshold.

[0008] Optionally, the engine oil quality control system further includes: a temperature sensor and a thermal management component arranged inside the engine, wherein the temperature sensor is used to monitor the oil temperature in the engine, and the thermal management component is used to control the temperature of the engine.

[0009] Optionally, the engine oil quality control system also includes: an active air intake grille for controlling the air flow entering the engine; and a vehicle controller for controlling the active air intake grille to close the grille or open the grille according to the temperature of the engine.

[0010] A second aspect of the present application provides an engine oil quality control method, comprising the following steps: detecting whether the engine oil satisfies a dilution condition or an emulsification condition; when the engine oil satisfies any one of the dilution condition and the emulsification condition, controlling at least one of the volatile components, the fuel supply system, and the thermal management component in the engine to operate until the engine oil no longer satisfies the dilution condition and the emulsification condition.

[0011] Optionally, controlling at least one of the volatile components, fuel supply system and thermal management components in the engine includes: controlling the volatile component to perform stirring and heating operations, and / or controlling the fuel supply system to start a multiple injection mode, and / or controlling the thermal management component to close the large circulation outlet and the warm air outlet.

[0012] Optionally, detecting whether the engine oil satisfies a dilution condition or an emulsification condition includes: obtaining the engine oil dilution rate, the oil emulsification rate and the oil pressure; calculating the engine oil dilution degree according to the oil dilution rate, and calculating the engine oil emulsification degree according to the oil emulsification rate; if the oil dilution degree is greater than a preset oil dilution threshold and the oil pressure is less than an oil pressure threshold at the current oil temperature / speed of the engine, determining that the engine satisfies the dilution condition; if the oil emulsification degree is greater than a preset oil emulsification threshold and the oil pressure is less than the oil pressure threshold at the current oil temperature / speed of the engine, determining that the engine satisfies the emulsification condition.

[0013] A third aspect of the present application provides a vehicle, comprising the engine oil quality control system of the above embodiment.

[0014] Therefore, this application has at least the following beneficial effects:

[0015] The volatilization component of the embodiment of the present application is installed on the oil pan and can come into contact with the engine oil to accelerate the volatilization of water and fuel components in the engine oil. When the engine controller detects that the dilution conditions and emulsification conditions are met, the volatilization component will be started to volatilize the water and fuel components therein, thereby improving the quality of the engine oil and preventing engine performance degradation and other potential mechanical problems caused by oil dilution or emulsification.

[0016] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0018] Figure 1 A block diagram of an engine oil quality control system provided according to an embodiment of the present application;

[0019] Figure 2 A structural diagram of a volatile component provided according to an embodiment of the present application;

[0020] Figure 3 A detailed example diagram of an engine oil quality control system provided according to an embodiment of the present application;

[0021] Figure 4 A flow chart of an engine oil quality control method provided according to an embodiment of the present application;

[0022] Figure 5 This is an exemplary diagram of an engine oil quality control method provided according to an embodiment of the present application. DETAILED DESCRIPTION

[0023] Embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0024] The following describes the engine oil quality control system, method and vehicle of the embodiment of the present application with reference to the accompanying drawings. In view of the problems mentioned in the above background technology, the present application provides an engine oil quality control system, in which a volatilizing component is installed on the oil pan and can contact the oil to accelerate the volatilization of water and fuel components in the oil. When the engine controller detects that the dilution condition and emulsification condition are met, the volatilizing component will be started to volatilize the water and fuel components therein, thereby improving the quality of the oil and preventing engine performance degradation and other potential mechanical problems caused by oil dilution or emulsification.

[0025] Specifically, Figure 1 It is a block diagram of an engine oil quality control system according to an embodiment of the present application.

[0026] like Figure 1 As shown, the engine oil quality control system 10 includes: an engine 101 and an engine oil pan 102 , a volatile component 103 and an engine controller 104 .

[0027] Among them, the volatile component 103 is set on the oil pan 102; the engine controller 104 is used to control the volatile component 103 to perform quality control actions when the engine oil meets any one of the dilution conditions and emulsification conditions, by evaporating at least one of the water and fuel in the engine oil until the engine oil does not meet the dilution condition and the emulsification condition.

[0028] In the embodiment of the present application, the engine 101 is the main body of the oil dilution and emulsification, and the main factors affecting the oil dilution and emulsification degree are the coolant temperature and oil temperature of the engine 101. The higher the coolant temperature, the lower the oil dilution and emulsification degree; the higher the oil temperature, the lower the oil dilution and emulsification degree. The volatile component 103 of the embodiment of the present application is arranged on the oil pan 102 and can be directly in contact with the oil. In the embodiment of the present application, the engine controller 104 can monitor the state of the oil and take action when the oil dilution or emulsification condition is detected. The emulsification condition is: the oil emulsification degree is greater than the preset oil emulsification threshold, and the oil pressure is less than the oil pressure threshold at the current oil temperature / speed of the engine, and the dilution condition is: the oil dilution degree is greater than the preset oil dilution threshold, and the oil pressure is less than the oil pressure threshold. When any one of the conditions is met, the engine controller of the embodiment of the present application can start the volatile component 103 to volatilize the water and fuel components therein, thereby improving the quality of the oil until the oil no longer meets the dilution or emulsification condition. This allows for dynamic response to changes in oil quality, and timely action to prevent engine performance degradation and other potential mechanical problems caused by oil dilution or emulsification. In addition, maintaining oil quality in this way also helps extend engine life and reduce maintenance costs.

[0029] In one embodiment of the present application, the quality control action includes: at least one of a heating action of the resistance wire and a stirring action of the stirring rod, and the volatile component 103 has stirring and heating functions, such as Figure 2As shown, it includes: a driving motor 21, a stirring rod 22 and a resistance wire 23 arranged in the stirring rod, wherein the resistance wire 23 heats the engine oil, and the driving motor 21 drives the stirring rod 22 to stir the engine oil. The surface of the stirring rod 22 is a blade structure, which can effectively make the oil in the oil pan 102 fully circulate and heat it. The driving motor 21 is controlled by the engine controller, and its stirring speed needs to be calibrated. The power supplied to the heating resistance wire 23 also needs to be calibrated. The main control factors of the calibration are the oil temperature, oil dilution, oil emulsification degree and time.

[0030] It should be noted that the stirring rod 22 of the embodiment of the present application is connected to the oil pan 102 via a bearing, and the bearing needs to have the function of sealing the oil.

[0031] In one embodiment of the present application, Figure 3 As shown, the engine oil quality control system also includes: a temperature sensor 105 and a thermal management component 106 arranged inside the engine, wherein the temperature sensor 105 is used to monitor the oil temperature in the engine, and the thermal management component 106 is used to heat the engine. An active air intake grille 107 is used to control the air flow entering the engine 101; and a vehicle controller 108 is used to control the active air intake grille 107 to close or open the grille according to the temperature of the engine.

[0032] Specifically, if Figure 3 As shown, the volatilization device 103 is installed in the engine 101, and its main function is to volatilize the water and fuel in the engine oil and restore the performance of the engine oil. The fuel supply system 8 is installed in the engine 101, and its main function is to execute the injection strategy of the engine 101. The thermal management component 106 is installed in the engine 101, and its main function is to control the water temperature of the engine 101. The temperature sensor 105 is installed in the engine 101, and its main function is to monitor the oil temperature. The active air intake grille 107 adjusts the air flow entering the engine compartment by automatically opening or closing, helping to increase the coolant temperature and the oil temperature.

[0033] In addition, the engine oil quality control system of the embodiment of the present application also includes an engine motor 6, a motor controller 3, an oil pressure sensor 11 and an oil-water ratio monitor 12, wherein the oil-water ratio monitor 12 is used to monitor the emulsification dilution degree of the oil, the oil pressure sensor 11 is used to detect the oil pressure, and the motor controller 3 is responsible for adjusting the speed, torque and other parameters of the motor 3. The vehicle controller 108 is responsible for coordinating the various parameters of the engine controller 104 and the motor controller 3, and controlling the active air intake grille 107. The engine motor 6 can also cooperate with the engine controller 104 to execute the strategy after the oil dilution and emulsification warning, turn off the active energy recovery function, so that the battery power remains at a relatively low state, so that the engine 101 can store excess energy in the battery and maintain power balance.

[0034] According to the engine oil quality control system proposed in the embodiment of the present application, the volatilization component is installed on the oil pan and can come into contact with the oil to accelerate the volatilization of water and fuel components in the oil. When the engine controller detects that the dilution conditions and emulsification conditions are met, the volatilization component will be started to volatilize the water and fuel components therein, thereby improving the quality of the oil and preventing engine performance degradation and other potential mechanical problems caused by oil dilution or emulsification.

[0035] Next, the engine oil quality control device proposed according to the embodiment of the present application is described with reference to the accompanying drawings.

[0036] Figure 4 A flow chart of an engine oil quality control method provided in an embodiment of the present application.

[0037] like Figure 4 As shown, the engine oil quality control method comprises the following steps:

[0038] In step S101 , it is detected whether the engine oil satisfies a dilution condition or an emulsification condition.

[0039] In one embodiment of the present application, detecting whether the engine oil satisfies the dilution condition or the emulsification condition includes: obtaining the engine oil dilution rate, the oil emulsification rate and the oil pressure; calculating the engine oil dilution degree according to the oil dilution rate, and calculating the engine oil emulsification degree according to the oil emulsification rate; if the oil dilution degree is greater than a preset oil dilution threshold and the oil pressure is less than the oil pressure threshold at the current oil temperature / speed of the engine, it is determined that the engine satisfies the dilution condition; if the oil emulsification degree is greater than the preset oil emulsification threshold and the oil pressure is less than the oil pressure threshold at the current oil temperature / speed of the engine, it is determined that the engine satisfies the emulsification condition.

[0040] It is understandable that the embodiments of the present application can be operated on the engine at different ambient temperatures (e.g., from -30°C to 30°C) and at different constant oil temperatures (e.g., from -300°C to 100°C), and the user's commonly used operating conditions can be selected. At a certain interval (e.g., 5 minutes), about 120 ml of oil sample can be taken, and the dilution and water content of the oil sample can be analyzed. At the same time, at low temperatures, generally speaking, the speed at which the oil emulsifies is faster than the oil dilution, and the harm of oil emulsification is also higher than that of oil dilution. Therefore, an oil water content monitor is used to monitor the degree of oil emulsification at all times to avoid reliability risks of the engine. At the same time, it can also be compared and verified with the oil sample test results. According to the oil sample test results, a MAP form of oil dilution and oil emulsification rate at different ambient temperatures, different operating conditions, and different oil temperatures is formed. The rate can be either increasing or decreasing.

[0041] Furthermore, the calculation formula for the emulsification of the engine oil in the embodiment of the present application is as follows:

[0042] Oil dilution rate A = oil dilution change / cumulative intake volume;

[0043] Engine oil emulsification rate B = engine oil emulsification change / cumulative air intake;

[0044] Furthermore, the calculated value C of the current oil dilution degree=the initial value C0 of the oil dilution degree in the previous driving cycle+the integral of the oil dilution rate A and the total intake air volume in the current driving cycle;

[0045] The calculated value D of the current oil emulsification degree = the initial value D0 of the oil emulsification degree in the previous driving cycle + the integral of the oil emulsification rate B over the total intake volume in the current driving cycle;

[0046] In the embodiment of the present application, the dilution condition is when the calculated value C of the oil dilution degree ≥ the oil dilution threshold Q1, and when the oil pressure P reported by the oil pressure sensor 11 ≤ the oil pressure threshold P1 at the current oil temperature / speed;

[0047] When the calculated value D of the oil emulsification degree ≥ the oil emulsification threshold Q2, and when the oil pressure P reported by the oil pressure sensor 11 ≤ the oil pressure threshold P1 at the current oil temperature / speed.

[0048] When one of the above two judgment conditions is met, the embodiment of the present application issues an oil dilution and emulsification warning, and each controller and hardware executes improvement measures.

[0049] In step S102, when the engine oil meets any one of the dilution condition and the emulsification condition, at least one of the volatilization component, the fuel supply system and the thermal management component in the engine is controlled to operate until the engine oil does not meet the dilution condition and the emulsification condition.

[0050] In one embodiment of the present application, controlling at least one of the volatile components, fuel supply system and thermal management components in the engine includes: controlling the volatile component to perform stirring and heating operations, and / or, controlling the fuel supply system to start a multiple injection mode, and / or, controlling the thermal management component to close the large circulation outlet and the warm air outlet.

[0051] Specifically, when it is detected that the engine oil meets any one of the dilution condition and the emulsification condition, the embodiment of the present application can be processed by the following measures, which are as follows:

[0052] 1) The engine controller sends instructions to the engine to control the volatile components in the engine to start stirring and heating, accelerating the volatilization of water and fuel components in the engine oil and restoring the performance of the engine oil;

[0053] 2) The engine controller sends a command to the engine to control the fuel supply system to start the multiple injection mode, reducing the possibility of fuel entering the engine oil and reducing the degree of oil dilution;

[0054] 3) The engine controller sends a command to the engine to control the engine thermal management module 9 to close the large circulation outlet and the warm air outlet, thereby reducing the engine's outward heat dissipation and increasing the engine temperature, which is conducive to the volatilization of moisture and fuel;

[0055] 4) The engine controller sends a command to the engine to shift the current operating point to a region with low thermal efficiency while meeting the power demand, so that the engine can generate more heat;

[0056] 5) The engine controller sends a warning command to the motor controller, which controls the motor to stop the energy recovery function so that the engine can release more energy;

[0057] 6) The engine controller sends a warning command to the vehicle controller, and the vehicle controller controls the active air intake grille to close to reduce the heat dissipation of the engine;

[0058] 7) The engine controller sends a warning command to the vehicle controller, and the vehicle controller stops sending the engine shutdown request to the engine controller, keeping the engine running so that the water and gasoline in the engine oil continue to evaporate.

[0059] The following can be combined Figure 5 The engine oil quality control method of the embodiment of the present application is described in detail, comprising the following steps:

[0060] Step 2, the engine controller issues an oil dilution and emulsification warning instruction;

[0061] Step 3-Step 6: The engine controller sends execution instructions for improving strategies for dealing with oil dilution and emulsification to various actuators inside the engine, with the goal of reducing the amount of gasoline and water entering the oil, increasing the water temperature and oil temperature, and increasing the volatilization of water and gasoline;

[0062] In step 7 and step 9, the engine controller sends a warning instruction to the motor controller, requesting to turn off the energy recovery function of the motor so that more energy of the engine can be released;

[0063] In step 8 and step 10, the engine controller sends a warning command to the vehicle controller, requesting the active air intake grille to be closed to reduce the heat dissipation of the engine; at the same time, the vehicle controller is requested to stop sending an engine shutdown request to the engine controller to keep the engine running so that the water and gasoline in the engine oil can continue to evaporate.

[0064] Step 11, the engine controller calculates the current oil dilution and emulsification degree. ① When the calculated value C of the oil dilution degree is less than the oil dilution threshold Q1 or when the calculated value D of the oil emulsification degree is less than the oil emulsification threshold Q2, ECU2 issues an oil dilution and emulsification warning, and each controller and hardware implements improvement measures.

[0065] ② When the oil pressure P reported by the oil pressure sensor 11 is greater than the oil pressure threshold value P1 at the current oil temperature / speed.

[0066] The above two judgment conditions are intersected, that is, when both conditions are met, the engine controller cancels the oil dilution and emulsification warning.

[0067] Step 12-Step 17, the engine controller controls the various actuators of the engine to restore the pre-warning state; the motor controller restores the energy recovery function of the motor; the vehicle controller controls the active air intake grille to restore the original control strategy; the engine shutdown request restores the original control strategy.

[0068] In step 18 and step 19, when the engine continues to run, the engine controller continues to calculate the oil dilution and emulsification degree according to the oil dilution and emulsification model.

[0069] Step 20 , if the engine is stopped, the current calculated value C of the oil dilution degree and the calculated value D of the oil emulsification degree are stored as the initial value C0 of the oil dilution degree and the initial value D0 of the oil emulsification degree for the next driving cycle.

[0070] It should be noted that the above explanation of the embodiment of the engine oil quality control system is also applicable to the engine oil quality control method of this embodiment, and will not be repeated here.

[0071] According to the engine oil quality control method proposed in the embodiment of the present application, the oil state is monitored, and when the engine oil meets the dilution condition and emulsification condition, the volatile components, fuel supply system and thermal management components in the engine are controlled to improve the oil quality, thereby ensuring that the engine can maintain a good oil state under various operating conditions and avoiding engine performance degradation or damage due to oil quality problems.

[0072] In addition, an embodiment of the present application also provides a vehicle, including the engine oil quality control system of the above embodiment.

[0073] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms are not necessarily directed to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or N embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0074] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, "N" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0075] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, fragment or portion of code comprising one or more executable instructions for implementing the steps of a custom logical function or process, and the scope of the preferred embodiments of the present application includes alternative implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in reverse order depending on the functions involved, which should be understood by technicians in the technical field to which the embodiments of the present application belong.

[0076] It should be understood that the various parts of the present application can be implemented by hardware, software, firmware or a combination thereof. In the above-mentioned embodiment, the N steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array, a field programmable gate array, etc.

[0077] A person skilled in the art may understand that all or part of the steps in the method for implementing the above-mentioned embodiment may be completed by instructing related hardware through a program, and the program may be stored in a computer-readable storage medium, which, when executed, includes one or a combination of the steps of the method embodiment.

[0078] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. An engine oil quality control system, characterized in that: include: Engine and engine oil pan; A volatilization component disposed on the oil pan; The engine controller is used to control the volatilization component to perform quality control actions when the engine oil meets any one of the dilution condition and the emulsification condition, by volatilizing at least one of the water and fuel in the engine oil until the engine oil does not meet the dilution condition and the emulsification condition.

2. The engine oil quality control system according to claim 1, characterized in that: The volatile component comprises: A driving motor, a stirring rod and a resistance wire arranged in the stirring rod, wherein the resistance wire heats the engine oil of the engine, and the driving motor drives the stirring rod to stir the engine oil.

3. The engine oil quality control system according to claim 2, characterized in that: The surface of the stirring rod is a blade structure.

4. The engine oil quality control system according to claim 1, characterized in that: The quality control action includes: at least one of a heating action of a resistance wire and a stirring action of a stirring rod, the emulsification condition is: the degree of oil emulsification is greater than a preset oil emulsification threshold, and the oil pressure is less than the oil pressure threshold at the current oil temperature / speed of the engine, and the dilution condition is: the degree of oil dilution is greater than a preset oil dilution threshold, and the oil pressure is less than the oil pressure threshold.

5. The engine oil quality control system according to claim 1, characterized in that: Also includes: A temperature sensor and a thermal management component are provided inside the engine, wherein the temperature sensor is used to monitor the oil temperature in the engine, and the thermal management component is used to control the temperature of the engine.

6. The engine oil quality control system according to claim 5, characterized in that: Also includes: Active grille to control air flow into the engine; The vehicle controller is used to control the active air intake grille to close the grille or open the grille according to the temperature of the engine.

7. A vehicle, characterized in that: include: An engine oil quality control system according to any one of claims 1 to 6.

8. A method for controlling the quality of engine oil, characterized in that: The method is implemented based on the engine oil quality control system according to any one of claims 1 to 6, and comprises the following steps: Check whether the engine oil meets the dilution condition or emulsification condition; When the engine oil meets any one of the dilution condition and the emulsification condition, at least one of the volatilization component, the fuel supply system and the thermal management component in the engine is controlled to operate until the engine oil does not meet the dilution condition and the emulsification condition.

9. The engine oil quality control method according to claim 8, characterized in that: Controlling at least one of a volatile component, a fuel supply system, and a thermal management component in the engine includes: The volatilization component is controlled to perform stirring and heating, and / or, the fuel supply system is controlled to start a multiple injection mode, and / or, the thermal management component is controlled to close a large circulation outlet and a warm air outlet.

10. The engine oil quality control method according to claim 8, characterized in that: Check that the engine oil meets the dilution or emulsification conditions, including: Obtaining the engine oil dilution rate, oil emulsification rate and oil pressure; Calculating the engine oil dilution degree of the engine according to the engine oil dilution rate, and calculating the engine oil emulsification degree of the engine according to the engine oil emulsification rate; If the oil dilution degree is greater than a preset oil dilution threshold and the oil pressure is less than an oil pressure threshold at the current oil temperature / speed of the engine, it is determined that the engine meets the dilution condition; If the degree of oil emulsification is greater than a preset oil emulsification threshold, and the oil pressure is less than an oil pressure threshold at the current oil temperature / speed of the engine, it is determined that the engine meets the emulsification condition.

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