An oil mist concentration control system, method, apparatus, and storage medium

Abstract

The application relates to the engine technical field, and in particular to an oil mist concentration control system, method, device and storage medium. The system comprises a intercooler, which is used for supplementing high-pressure air to a crankcase when the engine is running; an oil mist concentration sensor, which is used for detecting the oil mist concentration in the crankcase, generating an oil mist concentration signal representing the oil mist concentration, and sending the oil mist concentration signal to a controller; the controller is used for generating a control signal for a one-way stop valve according to the oil mist concentration signal, and sending the control signal to the one-way stop valve; the one-way stop valve is used for adjusting the working state according to the control signal, so as to change the flow of the high-pressure air supplemented by the intercooler to the crankcase. According to the application, the one-way stop valve is connected between the intercooler and the crankcase, the oil mist concentration sensor is arranged on the crankcase, the oil mist concentration in the crankcase is detected, the control signal is generated according to the oil mist concentration signal, the working state of the one-way stop valve is adjusted, and the high-pressure air supplemented by the intercooler is controlled.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of engines, and particularly relates to an oil mist concentration control system, method, device and storage medium. BACKGROUND

[0002] Methanol engine produces formic acid, water and other components in the combustion process. In actual application, a small amount of formic acid and water enters the crankcase of the methanol engine through the combustion chamber and mixes with the oil in the crankcase, causing oil emulsification, which not only affects the service life of the oil, but also reduces the performance of the oil, and seriously affects the reliability of the engine.

[0003] To solve the above problems, in the related art, a charge air cooler is connected to the crankcase, and the charge air cooler supplies high-pressure air to the crankcase to increase the scavenging efficiency of the crankcase and accelerate the discharge of formic acid and water vapor. However, the air volume of the high-pressure air supplied to the crankcase changes with the load of the engine, and since the volume of the crankcase does not change, the air pressure in the crankcase changes with the change in the air volume, causing the air pressure entering the crankcase to be in a fluctuating state, and the oil mist concentration in the crankcase also fluctuates, which still cannot guarantee that oil emulsification is effectively avoided during engine operation.

[0004] In summary, how to control the high-pressure air supplied to the crankcase to avoid oil emulsification is an urgent problem to be solved. SUMMARY

[0005] The embodiments of the present application provide an oil mist concentration control system, method, device and storage medium to control the high-pressure air supplied to the crankcase to avoid oil emulsification.

[0006] The oil mist concentration control system provided by the embodiments of the present application comprises a charge air cooler, a controller, a crankcase and a one-way check valve, the crankcase is provided with an oil mist concentration sensor, the first end of the one-way check valve is connected with the charge air cooler, the second end of the one-way check valve is connected with the controller, the third end of the one-way check valve is connected with the crankcase, and the controller is further connected with the oil mist concentration sensor; wherein:

[0007] The charge air cooler is configured to supply high-pressure air to the crankcase when the engine is running.

[0008] The oil mist concentration sensor is configured to detect the oil mist concentration in the crankcase, generate an oil mist concentration signal representing the oil mist concentration, and send the oil mist concentration signal to the controller.

[0009] The controller is configured to generate a control signal for the one-way check valve according to the oil mist concentration signal and send the control signal to the one-way check valve.

[0010] The one-way stop valve is configured to adjust a working state according to the control signal to change a flow of the high-pressure air supplemented by the intercooler to the crankcase.

[0011] Optionally, the controller is specifically configured to:

[0012] analyze whether the oil mist concentration represented by the oil mist concentration signal reaches a first preset concentration threshold;

[0013] generate an opening control signal for the one-way stop valve if the oil mist concentration reaches the first preset concentration threshold;

[0014] generate a closing control signal for the one-way stop valve if the oil mist concentration does not reach the first preset concentration threshold.

[0015] Optionally, the opening control signal includes a first opening control signal and a second opening control signal, and the controller is specifically configured to:

[0016] generate the first opening control signal for the one-way stop valve if the oil mist concentration reaches the first preset concentration threshold and does not reach a second preset concentration threshold;

[0017] generate the second opening control signal for the one-way stop valve if the oil mist concentration reaches the second preset concentration threshold;

[0018] wherein the second preset concentration threshold is greater than the first preset concentration threshold; the first opening control signal and the second opening control signal are used to control at least one of an opening degree and an opening duration of the one-way stop valve, and the first opening control signal and the second opening control signal have different control degrees on the one-way stop valve.

[0019] Optionally, the working state includes the opening degree, and the one-way stop valve is specifically configured to:

[0020] adjust the opening degree to a first opening degree according to the first opening control signal, so that the intercooler supplements a first flow of the high-pressure air to the crankcase;

[0021] adjust the opening degree to a second opening degree according to the second opening control signal, so that the intercooler supplements a second flow of the high-pressure air to the crankcase;

[0022] wherein the first opening degree is less than the second opening degree, and the first flow is less than the second flow.

[0023] Optionally, the working state includes the opening duration, and the one-way stop valve is specifically configured to:

[0024] According to the first opening control signal, the opening duration is adjusted as a first opening duration, so that the intercooler supplements the third flow of high-pressure air to the crankcase;

[0025] According to the second opening control signal, the opening duration is adjusted as a second opening duration, so that the intercooler supplements the fourth flow of high-pressure air to the crankcase;

[0026] The first opening duration is less than the second opening duration, and the third flow is less than the fourth flow.

[0027] The oil mist concentration control method provided by the embodiment of the application is applied to a controller in an oil mist concentration control system. The system further includes an intercooler, a crankcase, and a one-way stop valve. An oil mist concentration sensor is arranged on the crankcase. A first end of the one-way stop valve is connected to the intercooler. A second end of the one-way stop valve is connected to the controller. A third end of the one-way stop valve is connected to the crankcase. The controller is further connected to the oil mist concentration sensor. The intercooler is used to supplement high-pressure air to the crankcase when the engine is running. The method includes the following steps.

[0028] After the oil mist concentration sensor detects the oil mist concentration in the crankcase, an oil mist concentration signal representing the oil mist concentration is sent.

[0029] According to the oil mist concentration signal, a control signal for the one-way stop valve is generated and sent to the one-way stop valve, so that the one-way stop valve adjusts the working state according to the control signal, and changes the flow of high-pressure air supplemented by the intercooler to the crankcase.

[0030] Optionally, the generation of the control signal for the one-way stop valve according to the oil mist concentration signal includes the following steps.

[0031] It is analyzed whether the oil mist concentration represented by the oil mist concentration signal reaches a first preset concentration threshold.

[0032] If the oil mist concentration reaches the first preset concentration threshold, an opening control signal for the one-way stop valve is generated.

[0033] If the oil mist concentration does not reach the first preset concentration threshold, a closing control signal for the one-way stop valve is generated.

[0034] Optionally, the opening control signal includes a first opening control signal and a second opening control signal. If the oil mist concentration reaches the first preset concentration threshold, the opening control signal for the one-way stop valve is generated, including the following steps.

[0035] if the oil mist concentration reaches the first preset concentration threshold and does not reach a second preset concentration threshold, generating a first opening control signal for the one-way stop valve;

[0036] if the oil mist concentration reaches the second preset concentration threshold, generating a second opening control signal for the one-way stop valve;

[0037] The second preset concentration threshold is greater than the first preset concentration threshold; the first opening control signal and the second opening control signal are used to control at least one of the opening degree and the opening duration of the one-way stop valve, and the control degree of the first opening control signal and the second opening control signal on the one-way stop valve is different.

[0038] Another oil mist concentration control method provided by the embodiment of the application is applied to a one-way stop valve in an oil mist concentration control system, the system further comprising: an intercooler, a controller and a crankcase, the crankcase being provided with an oil mist concentration sensor, a first end of the one-way stop valve being connected with the intercooler, a second end of the one-way stop valve being connected with the controller, a third end of the one-way stop valve being connected with the crankcase, and the controller being further connected with the oil mist concentration sensor; the intercooler is used to supplement high-pressure air to the crankcase when the engine is running; the method comprises:

[0039] receiving a control signal sent by the controller; wherein the control signal is generated by the controller according to an oil mist concentration signal representing the oil mist concentration, the oil mist concentration signal being generated by the oil mist concentration sensor after detecting the oil mist concentration in the crankcase and sent to the controller;

[0040] adjusting the working state according to the control signal to change the flow of high-pressure air supplemented by the intercooler to the crankcase.

[0041] Optionally, the control signal comprises a first opening control signal and a second opening control signal, and the working state comprises an opening degree, and adjusting the working state according to the control signal comprises:

[0042] adjusting the opening degree to a first opening degree according to the first opening control signal, so that the intercooler supplements a first flow of high-pressure air to the crankcase;

[0043] adjusting the opening degree to a second opening degree according to the second opening control signal, so that the intercooler supplements a second flow of high-pressure air to the crankcase;

[0044] The first opening degree is less than the second opening degree, and the first flow is less than the second flow.

[0045] Optionally, the control signal comprises a first opening control signal and a second opening control signal, and the working state comprises an opening duration, and the adjusting the working state according to the control signal comprises:

[0046] adjusting the opening duration to a first opening duration according to the first opening control signal, so that the intercooler supplements the third flow of high-pressure air to the crankcase;

[0047] adjusting the opening duration to a second opening duration according to the second opening control signal, so that the intercooler supplements the fourth flow of high-pressure air to the crankcase;

[0048] wherein the first opening duration is less than the second opening duration, and the third flow is less than the fourth flow.

[0049] An oil mist concentration control device provided by an embodiment of the present application is applied to a controller in an oil mist concentration control system, and the system further comprises an intercooler, a crankcase, and a one-way stop valve. The crankcase is provided with an oil mist concentration sensor. The first end of the one-way stop valve is connected with the intercooler, the second end of the one-way stop valve is connected with the controller, the third end of the one-way stop valve is connected with the crankcase, and the controller is further connected with the oil mist concentration sensor. The intercooler is configured to supplement high-pressure air to the crankcase when the engine is running. The device comprises:

[0050] a first receiving unit configured to receive an oil mist concentration signal representing an oil mist concentration detected by the oil mist concentration sensor in the crankcase;

[0051] a sending unit configured to generate a control signal for the one-way stop valve according to the oil mist concentration signal, and send the control signal to the one-way stop valve, so that the one-way stop valve adjusts a working state according to the control signal, and changes a flow of high-pressure air supplemented by the intercooler to the crankcase.

[0052] Optionally, the sending unit is specifically configured to:

[0053] analyze whether the oil mist concentration represented by the oil mist concentration signal reaches a first preset concentration threshold;

[0054] if the oil mist concentration reaches the first preset concentration threshold, generate an opening control signal for the one-way stop valve;

[0055] if the oil mist concentration does not reach the first preset concentration threshold, generate a closing control signal for the one-way stop valve.

[0056] Optionally, the opening control signal comprises a first opening control signal and a second opening control signal, and the sending unit is specifically configured to:

[0057] if the oil mist concentration reaches the first preset concentration threshold and does not reach a second preset concentration threshold, generating a first opening control signal for the one-way stop valve;

[0058] if the oil mist concentration reaches the second preset concentration threshold, generating a second opening control signal for the one-way stop valve;

[0059] wherein the second preset concentration threshold is greater than the first preset concentration threshold; the first opening control signal and the second opening control signal are used to control at least one of the opening degree and the opening duration of the one-way stop valve, and the first opening control signal and the second opening control signal have different control degrees on the one-way stop valve.

[0060] Another oil mist concentration control device provided by the embodiment of the application is applied to a one-way stop valve in an oil mist concentration control system, the system further comprising: an intercooler, a controller, and a crankcase, the crankcase being provided with an oil mist concentration sensor, a first end of the one-way stop valve being connected with the intercooler, a second end of the one-way stop valve being connected with the controller, a third end of the one-way stop valve being connected with the crankcase, and the controller being further connected with the oil mist concentration sensor; the intercooler is used to supplement high-pressure air to the crankcase when the engine is running; the device comprises:

[0061] a second receiving unit configured to receive a control signal sent by the controller; wherein the control signal is generated by the controller according to an oil mist concentration signal representing the oil mist concentration, the oil mist concentration signal being generated by the oil mist concentration sensor after detecting the oil mist concentration in the crankcase and sent to the controller;

[0062] an adjusting unit configured to adjust a working state according to the control signal, so as to change the flow of high-pressure air supplemented by the intercooler to the crankcase.

[0063] Optionally, the control signal comprises a first opening control signal and a second opening control signal, and the working state comprises an opening degree, and the adjusting unit is specifically configured to:

[0064] according to the first opening control signal, adjust the opening degree to a first opening degree, so that the intercooler supplements a first flow of high-pressure air to the crankcase;

[0065] according to the second opening control signal, adjust the opening degree to a second opening degree, so that the intercooler supplements a second flow of high-pressure air to the crankcase;

[0066] wherein the first opening degree is less than the second opening degree, and the first flow is less than the second flow.

[0067] Optionally, the control signal comprises a first opening control signal and a second opening control signal, and the working state comprises an opening duration, and the adjusting unit is specifically configured to:

[0068] adjust the opening duration to a first opening duration according to the first opening control signal, so that the intercooler supplements the third flow of high-pressure air to the crankcase;

[0069] adjust the opening duration to a second opening duration according to the second opening control signal, so that the intercooler supplements the fourth flow of high-pressure air to the crankcase;

[0070] wherein the first opening duration is less than the second opening duration, and the third flow is less than the fourth flow.

[0071] The embodiment of the present application provides a computer readable storage medium comprising a computer program, when the computer program runs on an electronic device, the computer program is used to make the electronic device execute the steps of any one of the oil mist concentration control methods.

[0072] The embodiment of the present application provides a computer program product, the computer program product comprises a computer program, and the computer program is stored in a computer readable storage medium; when a processor of an electronic device reads the computer program from the computer readable storage medium, the processor executes the computer program, so that the electronic device executes the steps of any one of the oil mist concentration control methods.

[0073] The embodiment of the present application has the following beneficial effects:

[0074] The embodiment of the present application provides an oil mist concentration control system, method, device and storage medium, by connecting a one-way stop valve between the intercooler and the crankcase, and setting an oil mist concentration sensor on the crankcase, continuously detecting the oil mist concentration in the crankcase, and sending an oil mist concentration signal representing the oil mist concentration to the controller. The controller generates a control signal to adjust the working state of the one-way stop valve according to the oil mist concentration signal, so as to control the flow of high-pressure air supplemented by the intercooler to the crankcase, and control the oil mist concentration in the crankcase within a reasonable range.

[0075] In summary, after the oil mist concentration sensor detects the oil mist concentration in the crankcase in real time, the control unit can adjust the one-way stop valve in time, so as to control the oil mist concentration in the crankcase in time. When the engine is running, the oil mist concentration in the crankcase can be adjusted in real time as the engine load changes, so as to avoid the phenomenon of oil emulsification.

[0076] Other features and advantages of the present application will be set forth in the description that follows, and in part will be apparent from the description, or can be learned by practice of the application. The purposes and other advantages of the present application will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings. BRIEF DESCRIPTION OF DRAWINGS

[0077] The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the present application and together with the description serve to explain the present application. In the drawings:

[0078] Figure 1 A schematic diagram of oil emulsification is provided for embodiments of the present application;

[0079] Figure 2 A schematic diagram of a related art is provided for embodiments of the present application;

[0080] Figure 3 A schematic diagram of an oil mist concentration control system is provided for embodiments of the present application;

[0081] Figure 4 A flow chart of an oil mist concentration control method is provided for embodiments of the present application;

[0082] Figure 5A A schematic diagram of a structure of an oil mist concentration control device is provided for embodiments of the present application;

[0083] Figure 5B A schematic diagram of a structure of another oil mist concentration control device is provided for embodiments of the present application;

[0084] Figure 6 A schematic diagram of a hardware component structure of an electronic device applying embodiments of the present application is provided;

[0085] Figure 7 A schematic diagram of a hardware component structure of a computing device applying embodiments of the present application is provided. DETAILED DESCRIPTION

[0086] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions of the present application will be described below in connection with the drawings of the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments described in the present application document, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0087] Some concepts involved in the embodiments of the present application will be introduced below.

[0088] Crankcase: This is an enclosed space at the bottom of the engine that contains the crankshaft, connecting rods, and other related mechanical components. Its main function is to house these components and provide them with necessary lubrication and cooling. In addition, the crankcase is responsible for sealing to prevent oil leakage.

[0089] Engine oil emulsification refers to the phenomenon that occurs when coolant or water-based substances enter the engine oil. Emulsified engine oil has reduced lubrication performance, and the water in the emulsified oil can accelerate the corrosion of metal parts, thereby affecting the engine's performance and reliability.

[0090] An intercooler is a device used to cool the intake system of an internal combustion engine. Its main function is to reduce the temperature of the air entering the engine cylinders in a turbocharged engine. When air is compressed, its temperature rises. A higher intake air temperature leads to a decrease in air density, thereby reducing engine efficiency and power output. By using an intercooler to lower the intake air temperature, the air density can be increased, thus increasing the engine's charging efficiency, ultimately improving engine power output and fuel economy. In this embodiment, high-pressure air is supplied to the crankcase via the intercooler to avoid oil emulsification in the crankcase.

[0091] The design concept of the embodiments of this application is briefly introduced below:

[0092] Methanol engines produce formic acid and water during combustion. In practical applications, small amounts of formic acid and water can enter the engine's crankcase through the combustion chamber, mixing with the engine oil and causing oil emulsification. Figure 1 The diagram shown is a schematic representation of engine oil emulsification according to an embodiment of this application. Engine oil emulsification not only affects the service life of the engine oil but also reduces its performance, severely impacting engine reliability.

[0093] To address the aforementioned issues, related technologies involve directly connecting the intercooler to the engine's crankcase. High-pressure air is supplied to the crankcase via the intercooler, increasing crankcase ventilation efficiency and accelerating the removal of formic acid and water vapor. For example... Figure 2 The diagram shown is a schematic representation of a related technology provided in an embodiment of this application. However, the amount of high-pressure air supplied to the crankcase in the above-described manner varies with the engine load. Since the crankcase volume does not change, the air pressure in the crankcase changes with the amount of air, resulting in constant fluctuations in the air pressure entering the crankcase. Consequently, the oil mist concentration in the crankcase also fluctuates, and it is still impossible to effectively prevent oil emulsification during engine operation.

[0094] Therefore, the application provides an oil mist concentration control system, method, device and storage medium. A one-way stop valve is connected between the intercooler and the crankcase, and an oil mist concentration sensor is arranged on the crankcase to continuously detect the oil mist concentration in the crankcase and send an oil mist concentration signal representing the oil mist concentration to the controller. The controller generates a control signal to adjust the working state of the one-way stop valve according to the oil mist concentration signal, so as to control the flow of high-pressure air supplied from the intercooler to the crankcase and control the oil mist concentration in the crankcase within a reasonable range.

[0095] The preferred embodiments of the application are described below in conjunction with the accompanying drawings of the specification. It should be understood that the preferred embodiments described herein are only used to explain and illustrate the application, and are not used to limit the application, and the embodiments in the application and the features in the embodiments can be combined with each other without conflict.

[0096] As shown in Figure 3 , it is a schematic diagram of an oil mist concentration control system provided by an embodiment of the application. The oil mist concentration control system comprises an intercooler 301, a crankcase 302, an oil mist concentration sensor 303, a controller 304 and a one-way stop valve 305.

[0097] The oil mist concentration sensor 303 is arranged on the crankcase 302, the first end of the one-way stop valve 305 is connected with the intercooler 301, the second end of the one-way stop valve 305 is connected with the controller 304, the third end of the one-way stop valve 305 is connected with the crankcase 302, and the controller 304 is further connected with the oil mist concentration sensor 303.

[0098] The intercooler 301 is configured to supply high-pressure air to the crankcase 302 when the engine is running.

[0099] The oil mist concentration sensor 303 is configured to detect the oil mist concentration in the crankcase 302, generate an oil mist concentration signal representing the oil mist concentration, and send the oil mist concentration signal to the controller 304.

[0100] The controller 304 is configured to generate a control signal for the one-way stop valve 305 according to the oil mist concentration signal and send the control signal to the one-way stop valve 305.

[0101] The one-way stop valve 305 is configured to adjust the working state according to the control signal to change the flow of high-pressure air supplied from the intercooler 301 to the crankcase 302.

[0102] In an optional embodiment, the oil mist concentration sensor 303, the controller 304 and the one-way stop valve 305 can communicate through a communication network.

[0103] In an alternative embodiment, the communication network is a wired network or a wireless network.

[0104] The oil mist concentration control method provided by the example embodiments of the present application will be described below in conjunction with the above-described application scenarios, with reference to the accompanying drawings. It should be noted that the above-described application scenarios are only shown for the purpose of facilitating the understanding of the spirit and principles of the present application, and the example embodiments of the present application are not limited in this respect.

[0105] Figure 4 A flowchart of an oil mist concentration control method provided by an embodiment of the present application is shown in FIG. 4. As shown in FIG. 4, the method can include the following steps S41-S44: Figure 4

[0106] S41: A charge air cooler is used to supplement high-pressure air to the crankcase when the engine is running.

[0107] S42: An oil mist concentration sensor is used to detect the oil mist concentration in the crankcase, generate an oil mist concentration signal representing the oil mist concentration, and send the oil mist concentration signal to a controller.

[0108] Specifically, when the engine is running, the oil mist concentration sensor detects the oil mist concentration in the crankcase in real time and synchronously sends an oil mist concentration control signal representing the oil mist concentration to the controller.

[0109] S43: The controller is used to generate a control signal for the one-way check valve according to the oil mist concentration signal and send the control signal to the one-way check valve.

[0110] Specifically, the controller receives the oil mist concentration signal detected by the oil mist concentration sensor, generates a control signal according to the oil mist concentration represented by the oil mist concentration signal and a preset concentration threshold, and controls the working state of the one-way check valve through the control signal, so that the one-way check valve is opened when the oil mist concentration in the crankcase is high and closed when the oil mist concentration in the crankcase is low.

[0111] In an embodiment of the present application, when the controller generates the control signal, an alternative embodiment is as follows:

[0112] whether the oil mist concentration represented by the oil mist concentration signal reaches a first preset concentration threshold, and if the oil mist concentration reaches the first preset concentration threshold, an opening control signal for the one-way check valve is generated, and if the oil mist concentration does not reach the first preset concentration threshold, a closing control signal for the one-way check valve is generated.

[0113] The first preset concentration threshold is a value obtained after multiple experiments. When the oil mist concentration detected by the oil mist concentration sensor reaches this threshold, the controller sends an opening control signal to the one-way check valve, and when the oil mist concentration detected by the oil mist concentration sensor does not reach this threshold, the controller sends a closing control signal to the one-way check valve, so that the one-way check valve remains in a closed state.​

[0114] For example, in one detection process, the oil mist concentration sensor detects an oil mist concentration 1 and sends a corresponding oil mist concentration signal 1 to the controller. After comparing the oil mist concentration 1 with the first preset concentration threshold, the controller determines that the oil mist concentration 1 reaches the first preset concentration threshold, and then generates an opening control signal for the one-way stop valve. Further, the oil mist concentration sensor continues to detect the crankcase, and in a certain detection process, an oil mist concentration 2 is detected, and a corresponding oil mist concentration signal 2 is sent to the controller. After comparing the oil mist concentration 2 with the first preset concentration threshold, the controller determines that the oil mist concentration 1 no longer reaches the first preset concentration threshold, and then generates a closing control signal for the one-way stop valve.

[0115] In addition, considering that the oil mist concentration in the crankcase and the air pressure supplemented by the intercooler will change with the load of the engine, the opening control signal in the embodiment of the application includes a first opening control signal and a second opening control signal. In an optional embodiment, the embodiment of the application adjusts the opened one-way stop valve in the following manner:

[0116] If the oil mist concentration reaches the first preset concentration threshold and does not reach the second preset concentration threshold, a first opening control signal for the one-way stop valve is generated; if the oil mist concentration reaches the second preset concentration threshold, a second opening control signal for the one-way stop valve is generated.

[0117] Wherein, the second preset concentration threshold is greater than the first preset concentration threshold; the first opening control signal and the second opening control signal are used to control at least one of the opening degree and the opening duration of the one-way stop valve, and the control degree of the first opening control signal and the second opening control signal on the one-way stop valve is different.

[0118] Specifically, the second preset concentration threshold is also a value obtained through multiple experiments, and the first preset concentration threshold and the second preset concentration threshold are not fixed.

[0119] For example, in one detection process, the oil mist concentration sensor detects an oil mist concentration 3 and sends a corresponding oil mist concentration signal 3 to the controller. After comparing the oil mist concentration 3 with the first preset concentration threshold, the controller determines that the oil mist concentration 3 reaches the first preset concentration threshold, and then compares the oil mist concentration 3 with the second preset concentration threshold to determine that the oil mist concentration 3 does not reach the second preset concentration threshold, and generates a first opening control signal for the one-way stop valve. Further, the oil mist concentration sensor continues to detect the crankcase, and detects an oil mist concentration 4 at a certain detection time, and sends a corresponding oil mist concentration signal 4 to the controller. After comparing the oil mist concentration 4 with the first preset concentration threshold, the controller determines that the oil mist concentration 4 reaches the first preset concentration threshold, and then compares the oil mist concentration 4 with the second preset concentration threshold to determine that the oil mist concentration 4 reaches the second preset concentration threshold, and generates a second opening control signal for the one-way stop valve.

[0120] In the above embodiment, the controller is provided to synchronize the one-way stop valve with the oil mist concentration signal, ensuring synchronization, so that the high-pressure air supplied by the intercooler to the crankcase can be adjusted in real time according to the oil mist concentration of the crankcase.

[0121] S44: The one-way stop valve is used to adjust the working state according to the control signal to change the flow of the high-pressure air supplied by the intercooler to the crankcase.

[0122] Specifically, the control signal sent by the controller to the one-way stop valve adjusts the working state of the one-way stop valve in real time, thereby adjusting the flow state of the high-pressure air supplied by the intercooler to the crankcase in real time, and achieving dynamic control of the oil mist concentration in the crankcase.

[0123] The working state includes the opening degree and the opening time, and the one-way stop valve can adjust the opening degree and / or the opening time in the opening state according to the control signal.

[0124] In the embodiment of the present application, when the one-way stop valve adjusts the opening degree, one optional embodiment is as follows:

[0125] According to the first opening control signal, the opening degree is adjusted to a first opening degree to make the intercooler supply the high-pressure air at a first flow rate to the crankcase; and according to the second opening control signal, the opening degree is adjusted to a second opening degree to make the intercooler supply the high-pressure air at a second flow rate to the crankcase.

[0126] The first opening degree is smaller than the second opening degree, and the first flow rate is smaller than the second flow rate.

[0127] Specifically, when the oil mist concentration reaches the first preset concentration threshold but has not reached the second preset concentration threshold, the one-way stop valve, according to the first opening control signal, causes the intercooler to supplement less high-pressure air to the crankcase, so as to meet the condition of avoiding the occurrence of oil emulsification. Therefore, if the opening of the one-way stop valve is adjusted based on the first opening control signal, the one-way stop valve will be adjusted to the first opening degree with a smaller opening, at which time the flow of high-pressure air supplemented by the intercooler to the crankcase is smaller.

[0128] When the oil mist concentration reaches the second preset concentration threshold, the one-way stop valve, according to the second opening control signal, causes the intercooler to supplement more high-pressure air to the crankcase, so as to meet the condition of avoiding the occurrence of oil emulsification. Therefore, if the opening of the one-way stop valve is adjusted based on the second opening control signal, the one-way stop valve will be adjusted to the second opening degree with a larger opening, at which time the flow of high-pressure air supplemented by the intercooler to the crankcase is larger.

[0129] In addition, more preset concentration thresholds and corresponding opening control signals for adjusting other openings of the one-way stop valve can also be set according to experimental results or experience.

[0130] It should be noted that when the opening of the one-way stop valve is controlled only by the control signal, the same opening time is opened at the first opening degree and the second opening degree. For example, when the opening is controlled only, it can be defaulted that the first opening time or the second opening time is opened at different openings. At this time, the flow of high-pressure air supplemented by the intercooler to the crankcase is different at different openings.

[0131] Similarly, in the embodiments of the present application, when the one-way stop valve adjusts the opening time, an optional implementation manner is as follows:

[0132] According to the first opening control signal, the opening time is adjusted to the first opening time, so that the intercooler supplements the third flow of high-pressure air to the crankcase; and according to the second opening control signal, the opening time is adjusted to the second opening time, so that the intercooler supplements the fourth flow of high-pressure air to the crankcase.

[0133] Among them, the first opening time is less than the second opening time, and the third flow is less than the fourth flow.

[0134] It should be noted that the first flow and the third flow can be the same or different, and the second flow and the fourth flow can be the same or different.

[0135] Specifically, when the oil mist concentration reaches the first preset concentration threshold but has not reached the second preset concentration threshold, the one-way stop valve, according to the first opening control signal, causes the intercooler to supplement less high-pressure air to the crankcase, so as to avoid the occurrence of oil emulsification. Therefore, if the opening duration of the one-way stop valve is adjusted based on the first opening control signal, the one-way stop valve will be adjusted to the first opening duration with a shorter time, at which time the flow of high-pressure air supplemented by the intercooler to the crankcase is smaller, so as to reduce the oil mist concentration in the crankcase to the first preset concentration threshold.

[0136] When the oil mist concentration reaches the second preset concentration threshold, the one-way stop valve, according to the second opening control signal, causes the intercooler to supplement more high-pressure air to the crankcase, so as to avoid the occurrence of oil emulsification. Therefore, if the opening duration of the one-way stop valve is adjusted based on the second opening control signal, the one-way stop valve will be adjusted to the second opening duration with a longer time, at which time the flow of high-pressure air supplemented by the intercooler to the crankcase is larger, so as to reduce the oil mist concentration in the crankcase to the first preset concentration threshold.

[0137] In addition, more preset concentration thresholds and corresponding opening control signals for adjusting other opening durations of the one-way stop valve can also be set according to experimental results or experience.

[0138] It should be noted that when the opening duration of the one-way stop valve is controlled by the control signal, the same opening degree is opened at the first opening duration and the second opening duration, for example, when only the opening duration is controlled, it can be defaulted that the first opening degree or the second opening degree is opened at different opening durations, and the like. At this time, the flow of high-pressure air supplemented by the intercooler to the crankcase is different at different opening durations.

[0139] In addition, when the one-way stop valve receives the first opening control signal, the opening degree and the opening duration can also be controlled at the same time, so that the one-way stop valve is opened at the first opening degree for the first opening duration; similarly, when the one-way stop valve receives the second opening control signal, the opening degree and the opening duration can also be controlled at the same time, so that the one-way stop valve is opened at the second opening degree for the second opening duration.

[0140] The embodiment of the present application provides an oil mist concentration control system, method, device and storage medium. The oil mist concentration control system is characterized in that a one-way stop valve is connected between a intercooler and a crankcase, and an oil mist concentration sensor is arranged on the crankcase to continuously detect the oil mist concentration in the crankcase and send an oil mist concentration signal representing the oil mist concentration to a controller. The controller generates a control signal to adjust the working state of the one-way stop valve according to the oil mist concentration signal, so as to control the flow of high-pressure air supplied from the intercooler to the crankcase, and control the oil mist concentration in the crankcase within a reasonable range. The controller controls the flow rate or flow of high-pressure air allowed to pass through the one-way stop valve by the difference between the oil mist signal in the crankcase and a preset oil mist concentration signal threshold, so that the one-way stop valve and the oil mist concentration sensor work in linkage.

[0141] In addition, the embodiment of the present application has little change to the existing components, and only needs to increase a pin function in the controller, and connect the oil mist concentration sensor and the one-way stop valve to realize the above-mentioned oil mist concentration control method.

[0142] Based on the same inventive concept, the embodiment of the present application further provides an oil mist concentration control device 500A applied to a controller in an oil mist concentration control system. The system further comprises an intercooler, a crankcase and a one-way stop valve. The crankcase is provided with an oil mist concentration sensor. The first end of the one-way stop valve is connected with the intercooler. The second end of the one-way stop valve is connected with the controller. The third end of the one-way stop valve is connected with the crankcase. The controller is further connected with the oil mist concentration sensor. The intercooler is used for supplying high-pressure air to the crankcase when the engine is running. The oil mist concentration control device 500A comprises: Figure 5A

[0143] The first receiving unit 501 is used for receiving the oil mist concentration signal representing the oil mist concentration sent by the oil mist concentration sensor after detecting the oil mist concentration in the crankcase.

[0144] The sending unit 502 is used for generating a control signal for the one-way stop valve according to the oil mist concentration signal, and sending the control signal to the one-way stop valve, so that the one-way stop valve adjusts the working state according to the control signal and changes the flow of high-pressure air supplied from the intercooler to the crankcase.

[0145] Optionally, the sending unit 502 is specifically used for:

[0146] analyzing whether the oil mist concentration represented by the oil mist concentration signal reaches a first preset concentration threshold;

[0147] if the oil mist concentration reaches the first preset concentration threshold, generating an opening control signal for the one-way stop valve;

[0148] if the oil mist concentration does not reach the first preset concentration threshold, generating a closing control signal for the one-way stop valve.

[0149] ​Optionally, the opening control signal includes a first opening control signal and a second opening control signal, and the sending unit 502 is specifically configured to:

[0150] If the oil mist concentration reaches the first preset concentration threshold and does not reach the second preset concentration threshold, a first opening control signal for the one-way stop valve is generated;

[0151] If the oil mist concentration reaches the second preset concentration threshold, a second opening control signal for the one-way stop valve is generated;

[0152] The second preset concentration threshold is greater than the first preset concentration threshold; the first opening control signal and the second opening control signal are used to control at least one of the opening degree and the opening duration of the one-way stop valve, and the first opening control signal and the second opening control signal have different control degrees on the one-way stop valve.

[0153] Based on the same inventive concept, another oil mist concentration control device 500B is also provided in the embodiments of the present application, which is applied to a one-way stop valve in an oil mist concentration control system. The system further includes a intercooler, a controller and a crankcase, the crankcase is provided with an oil mist concentration sensor, a first end of the one-way stop valve is connected with the intercooler, a second end of the one-way stop valve is connected with the controller, a third end of the one-way stop valve is connected with the crankcase, and the controller is further connected with the oil mist concentration sensor; the intercooler is used to supplement high-pressure air to the crankcase when the engine is running; as shown in Figure 5B The oil mist concentration control device 500B includes:

[0154] The second receiving unit 503 is configured to receive a control signal sent by the controller; wherein the control signal is generated by the controller according to an oil mist concentration signal representing the oil mist concentration; the oil mist concentration signal is generated and sent to the controller by the oil mist concentration sensor after detecting the oil mist concentration in the crankcase;

[0155] The adjusting unit 504 is configured to adjust the working state according to the control signal, so as to change the flow of high-pressure air supplemented by the intercooler to the crankcase.

[0156] Optionally, the control signal includes a first opening control signal and a second opening control signal, and the working state includes an opening degree, and the adjusting unit 504 is specifically configured to:

[0157] According to the first opening control signal, the opening degree is adjusted to a first opening degree, so that the intercooler supplements the first flow of high-pressure air to the crankcase;

[0158] According to the second opening control signal, the opening degree is adjusted to a second opening degree, so that the intercooler supplements the second flow of high-pressure air to the crankcase;

[0159] The first opening degree is less than the second opening degree, and the first flow is less than the second flow.

[0160] Optionally, the control signal comprises a first opening control signal and a second opening control signal, and the working state comprises an opening duration, and the adjusting unit 504 is specifically configured to:

[0161] According to the first opening control signal, the opening duration is adjusted to a first opening duration, so that the intercooler supplements the third flow of high-pressure air to the crankcase.

[0162] According to the second opening control signal, the opening duration is adjusted to a second opening duration, so that the intercooler supplements the fourth flow of high-pressure air to the crankcase.

[0163] Wherein, the first opening duration is less than the second opening duration, and the third flow is less than the fourth flow.

[0164] The embodiment of the present application provides a computer readable storage medium, which includes a computer program, when the computer program runs on an electronic device, the computer program is used to make the electronic device execute the steps of any one of the oil mist concentration control methods.

[0165] The embodiment of the present application provides a computer program product, the computer program product includes a computer program, the computer program is stored in a computer readable storage medium; when the processor of the electronic device reads the computer program from the computer readable storage medium, the processor executes the computer program, so that the electronic device executes the steps of any one of the oil mist concentration control methods.

[0166] Based on the same inventive concept, the embodiment of the present application also provides an electronic device. In one embodiment, the electronic device can be Figure 3 The controller 304 shown. In this embodiment, the structure of the electronic device can be as shown in Figure 6 The memory 601, the communication module 603 and one or more processors 602.

[0167] The memory 601 is used to store the computer program executed by the processor 602. The memory 601 can mainly include a program storage area and a data storage area, wherein the program storage area can store the operating system, and the program required for running the instant messaging function, etc.; the data storage area can store various instant messaging information and operation instruction set, etc.

[0168] The memory 601 can be a volatile memory, such as a random-access memory (RAM); the memory 601 can also be a non-volatile memory, such as a read-only memory, a flash memory, a hard disk drive (HDD), or a solid-state drive (SSD); or the memory 601 can be any other medium capable of carrying or storing desired computer program in the form of instructions or data structures and capable of being accessed by a computer, but not limited to the above. The memory 601 can be a combination of the above memories.

[0169] The processor 602 can include one or more central processing units (CPUs) or digital processing units, etc. The processor 602 is configured to implement the above oil mist concentration control method when invoking the computer program stored in the memory 601.

[0170] The communication module 603 is configured to communicate with electronic devices and other servers.

[0171] The specific connection medium between the above memory 601, the communication module 603, and the processor 602 is not limited in the embodiments of the present application. In the embodiments of the present application, the memory 601 and the processor 602 are connected through a bus 604, the bus 604 is described by a thick line in the embodiments of the present application, and the connection mode between other components is only schematically described, and is not limited thereto. The bus 604 can be divided into an address bus, a data bus, a control bus, etc. For the convenience of description, only one thick line is used to describe the bus 604 in the embodiments of the present application, but it is not described that there is only one bus or only one type of bus. Figure 6 Figure 6 Figure 6

[0172] The memory 601 stores a computer storage medium, the computer storage medium stores computer executable instructions, and the computer executable instructions are used to implement the oil mist concentration control method of the embodiments of the present application. The processor 602 is configured to execute the above oil mist concentration control method. Based on the same inventive concept, the embodiments of the present application provide a computer readable storage medium, and a computer program product includes computer program codes, when the computer program codes run on a computer, the computer program codes make the computer execute any one of the communication methods discussed above. Since the principle of solving problems of the above computer readable storage medium is similar to the oil mist concentration control method, the implementation of the above computer readable storage medium can be referred to the implementation of the method, and the repeated parts will not be described herein.

[0173] The following refers to Figure 7 ​​​The computing device 700 according to an embodiment of the present application is described. Figure 7 The computing device 700 is merely one example and should not be construed as limiting the scope of the application embodiments.

[0174] As Figure 7 The computing device 700 is in the form factor of a general- purpose computing device. The components of computing device 700 can include, but are not limited to, at least one processing unit 701, at least one memory 702, and a bus 703 that couples various system components including the memory 702 and the processing unit 701.

[0175] The bus 703 represents one or more of several types of bus structures, including a memory bus or memory controller, a peripheral bus, and a local bus using any of a variety of bus architectures.

[0176] The memory 702 can include read-only memory (ROM) 723 in the form of flash memory or other nonvolatile memory. The memory 702 can also include random access memory (RAM) 721 in the form of synchronous dynamic RAM (SDRAM), static RAM (SRAM), or other types of RAM equivalent.

[0177] The memory 702 can also include a program / utility 725 having a set of program modules 724, including an operating system, one or more application programs, other program modules, and program data, each of which can give the computing device 700 its functionality, some or all of which can be implemented as software instructions. The program / utility 725 can include software elements that are executed on the computing device 700. The program / utility 725 can also include software elements that are executed on external devices or even across multiple devices.

[0178] The computing device 700 can also communicate with one or more external devices 704 such as a keyboard or a pointing device, through an I / O interface 705. Additionally, the computing device 700 can communicate with one or more devices that enable a user to interact with the computing device 700, such as a display, a sound card, speakers, a mouse, a joystick, a game pad, a camera, a microphone, a scanner, a printer, etc. The computing device 700 can also communicate with one or more devices that enable the computing device 700 to interact with one or more other computing devices. Such communication can be facilitated by an I / O interface 705 and a network adapter 706. As examples, the computing device 700 can communicate with other computing devices, such as a networked computing device, through a network 707. Figure 7 As shown, the network adapter 706 communicates with the other components of the computing device 700 via the bus 703. It should be understood that although not shown, other hardware and / or software components that are coupled to the computing device 700 can also be used, such as microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data archival storage systems, etc.

[0179] The method in the present application can be implemented by software, hardware, firmware or any combination thereof, in whole or in part. When implemented by software, the method can be implemented in the form of a computer program product, in whole or in part. The computer program product includes one or more computer programs or instructions. When the computer program or instructions are loaded and executed on a computer, the processes or functions described in the present application are performed, in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, a network device, a user equipment, a core network device, an OAM or other programmable devices.

[0180] The computer readable storage medium can be an implementation of the computer program product, i.e., the present application also provides a computer readable storage medium including a computer program, which, when executed by a processor, implements any of the oil mist concentration control methods described above.

[0181] The computer program or instructions can be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another computer readable storage medium, for example, the computer program or instructions can be transmitted from one website site, computer, server or data center to another website site, computer, server or data center through wired or wireless manner. The computer readable storage medium can be any available medium accessible by a computer or a data storage device such as a server, data center, etc. integrated with one or more available media. The available media can be a magnetic medium, for example, a floppy disk, a hard disk, a magnetic tape; or an optical medium, for example, a digital video disc; or a semiconductor medium, for example, a solid state disk. The computer readable storage medium can be a volatile or non-volatile storage medium, or can include both volatile and non-volatile storage media.

[0182] 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 take the form of a complete hardware embodiment, a complete software embodiment or an embodiment combining software and hardware aspects. Moreover, the present application can take 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.

[0183] The computer program instructions can also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer-implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart block or blocks. Figure 1 one or more flow or blocks. Figure 1 one or more flow or blocks.

[0184] These computer program instructions can also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instructions which implement the function specified in the flowchart block or blocks. Figure 1 one or more flow or blocks. Figure 1 one or more flow or blocks.

[0185] The computer program instructions can also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer-implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart block or blocks. Figure 1 one or more flow or blocks. Figure 1 one or more flow or blocks.

[0186] Obviously, numerous modifications and variations of the present application are possible in light of the above teachings. It is therefore to be understood that within the scope of the appended claims and their equivalents, the application can be practiced otherwise than as specifically described.

Claims

1. An oil mist concentration control system, characterized by, The system comprises a middle cooler, a controller, a crankcase, an oil mist concentration sensor arranged on the crankcase, a one-way stop valve, a first end of the one-way stop valve being connected with the middle cooler, a second end of the one-way stop valve being connected with the controller, a third end of the one-way stop valve being connected with the crankcase, and the controller being further connected with the oil mist concentration sensor; wherein: The middle cooler is configured to supply high-pressure air to the crankcase when the engine is running. The oil mist concentration sensor is configured to detect the oil mist concentration in the crankcase, generate an oil mist concentration signal representing the oil mist concentration, and send the oil mist concentration signal to the controller. The controller is configured to analyze whether the oil mist concentration represented by the oil mist concentration signal reaches a first preset concentration threshold, generate a first opening control signal for the one-way stop valve and send the first opening control signal to the one-way stop valve if the oil mist concentration reaches the first preset concentration threshold and does not reach a second preset concentration threshold, generate a second opening control signal for the one-way stop valve and send the second opening control signal to the one-way stop valve if the oil mist concentration reaches the second preset concentration threshold, wherein the first preset concentration threshold is a value obtained through multiple experiments, the second preset concentration threshold is a value obtained through multiple experiments, the first preset concentration threshold and the second preset concentration threshold are not fixed, the second preset concentration threshold is greater than the first preset concentration threshold, the first opening control signal and the second opening control signal are configured to control at least one of the opening degree and the opening duration of the one-way stop valve, and the first opening control signal and the second opening control signal have different control degrees on the one-way stop valve, and generate a closing control signal for the one-way stop valve and send the closing control signal to the one-way stop valve if the oil mist concentration does not reach the first preset concentration threshold. The one-way stop valve is configured to adjust the working state according to the control signal to change the flow rate of the high-pressure air supplied by the middle cooler to the crankcase, and the control signal comprises the first opening control signal, the second opening control signal, and the closing control signal.

2. The system of claim 1, wherein, If the working state comprises the opening degree, the one-way stop valve is configured to: adjust the opening degree to a first opening degree according to the first opening control signal, so that the middle cooler supplies a first flow rate of high-pressure air to the crankcase; adjust the opening degree to a second opening degree according to the second opening control signal, so that the middle cooler supplies a second flow rate of high-pressure air to the crankcase; wherein the first opening degree is less than the second opening degree, and the first flow rate is less than the second flow rate. If the working state comprises the opening duration, the one-way stop valve is configured to:

3. The system of claim 1, wherein, adjust the opening duration to a first opening duration according to the first opening control signal, so that the middle cooler supplies a third flow rate of high-pressure air to the crankcase; adjust the opening duration to a second opening duration according to the second opening control signal, so that the middle cooler supplies a fourth flow rate of high-pressure air to the crankcase; ​ The first opening duration is less than the second opening duration, and the third flow rate is less than the fourth flow rate.

4. An oil mist concentration control method characterized by, The controller is applied to an oil mist concentration control system, and the system further comprises a intercooler, a crankcase, and a one-way stop valve, the crankcase is provided with an oil mist concentration sensor, a first end of the one-way stop valve is connected with the intercooler, a second end of the one-way stop valve is connected with the controller, a third end of the one-way stop valve is connected with the crankcase, and the controller is further connected with the oil mist concentration sensor; the intercooler is used for supplementing high-pressure air to the crankcase when the engine is running; the method comprises: receiving an oil mist concentration signal representing the oil mist concentration in the crankcase sent by the oil mist concentration sensor after detecting the oil mist concentration in the crankcase; analyzing whether the oil mist concentration represented by the oil mist concentration signal reaches a first preset concentration threshold; if the oil mist concentration reaches the first preset concentration threshold and does not reach a second preset concentration threshold, generating a first opening control signal for the one-way stop valve and sending the first opening control signal to the one-way stop valve, so that the one-way stop valve adjusts the working state according to the first opening control signal to change the flow rate of the high-pressure air supplemented by the intercooler to the crankcase; if the oil mist concentration reaches the second preset concentration threshold, generating a second opening control signal for the one-way stop valve and sending the second opening control signal to the one-way stop valve, so that the one-way stop valve adjusts the working state according to the second opening control signal to change the flow rate of the high-pressure air supplemented by the intercooler to the crankcase; wherein the first preset concentration threshold is a value obtained after multiple experiments; the second preset concentration threshold is a value obtained after multiple experiments, the first preset concentration threshold and the second preset concentration threshold are not fixed; the second preset concentration threshold is greater than the first preset concentration threshold; the first opening control signal and the second opening control signal are used for controlling at least one of the opening degree and the opening duration of the one-way stop valve, and the control degree of the first opening control signal and the second opening control signal on the one-way stop valve is different; if the oil mist concentration does not reach the first preset concentration threshold, generating a closing control signal for the one-way stop valve and sending the closing control signal to the one-way stop valve, so that the one-way stop valve adjusts the working state according to the closing control signal to change the flow rate of the high-pressure air supplemented by the intercooler to the crankcase.

5. An oil mist concentration control method characterized by, The one-way stop valve is applied to an oil mist concentration control system, and the system further comprises a intercooler, a controller, and a crankcase, the crankcase is provided with an oil mist concentration sensor, a first end of the one-way stop valve is connected with the intercooler, a second end of the one-way stop valve is connected with the controller, a third end of the one-way stop valve is connected with the crankcase, and the controller is further connected with the oil mist concentration sensor; the intercooler is used for supplementing high-pressure air to the crankcase when the engine is running; the method comprises: The controller sends a control signal; wherein the control signal includes: a first opening control signal, a second opening control signal and a closing control signal; if the oil mist concentration reaches a first preset concentration threshold and does not reach a second preset concentration threshold, the controller generates the first opening control signal; if the oil mist concentration reaches the second preset concentration threshold, the controller generates the second opening control signal; the first preset concentration threshold is a value obtained after multiple experiments; the second preset concentration threshold is a value obtained after multiple experiments, and the first preset concentration threshold and the second preset concentration threshold are not fixed; the second preset concentration threshold is greater than the first preset concentration threshold; the first opening control signal and the second opening control signal are used to control at least one of the opening degree and the opening time of the one-way stop valve, and the control degree of the first opening control signal and the second opening control signal on the one-way stop valve is different; if the oil mist concentration does not reach the first preset concentration threshold, the controller generates the closing control signal; the oil mist concentration signal is generated and sent to the controller by the oil mist concentration sensor after detecting the oil mist concentration in the crankcase; According to the control signal, the working state is adjusted to change the flow of high-pressure air supplemented by the intercooler to the crankcase.

6. An oil mist concentration control device characterized by comprising: The controller applied to an oil mist concentration control system, the system further comprises: an intercooler, a crankcase and a one-way stop valve, the oil mist concentration sensor is arranged on the crankcase, the first end of the one-way stop valve is connected with the intercooler, the second end of the one-way stop valve is connected with the controller, the third end of the one-way stop valve is connected with the crankcase, and the controller is further connected with the oil mist concentration sensor; the intercooler is used for: when the engine is running, supplementing high-pressure air to the crankcase; the device comprises: A first receiving unit is arranged for receiving the oil mist concentration signal representing the oil mist concentration sent by the oil mist concentration sensor after detecting the oil mist concentration in the crankcase; The controller sends a control signal; wherein the control signal includes: a first opening control signal, a second opening control signal and a closing control signal; if the oil mist concentration reaches a first preset concentration threshold and does not reach a second preset concentration threshold, the controller generates the first opening control signal; if the oil mist concentration reaches the second preset concentration threshold, the controller generates the second opening control signal; the first preset concentration threshold is a value obtained after multiple experiments; the second preset concentration threshold is a value obtained after multiple experiments, and the first preset concentration threshold and the second preset concentration threshold are not fixed; the second preset concentration threshold is greater than the first preset concentration threshold; the first opening control signal and the second opening control signal are used to control at least one of the opening degree and the opening time of the one-way stop valve, and the control degree of the first opening control signal and the second opening control signal on the one-way stop valve is different; if the oil mist concentration does not reach the first preset concentration threshold, the controller generates the closing control signal; the oil mist concentration signal is generated and sent to the controller by the oil mist concentration sensor after detecting the oil mist concentration in the crankcase; The sending unit is configured to analyze whether the oil mist concentration represented by the oil mist concentration signal reaches a first preset concentration threshold; if the oil mist concentration reaches the first preset concentration threshold and does not reach a second preset concentration threshold, a first opening control signal for the one-way stop valve is generated and sent to the one-way stop valve, so that the one-way stop valve adjusts the working state according to the first opening control signal, and the flow of high-pressure air supplemented by the intercooler to the crankcase is changed; if the oil mist concentration reaches the second preset concentration threshold, a second opening control signal for the one-way stop valve is generated and sent to the one-way stop valve, so that the one-way stop valve adjusts the working state according to the second opening control signal, and the flow of high-pressure air supplemented by the intercooler to the crankcase is changed; wherein the first preset concentration threshold is a value obtained after multiple experiments; the second preset concentration threshold is a value obtained after multiple experiments, and the first preset concentration threshold and the second preset concentration threshold are not fixed; the second preset concentration threshold is greater than the first preset concentration threshold; the first opening control signal and the second opening control signal are used to control at least one of the opening degree and the opening time length of the one-way stop valve, and the control degree of the first opening control signal and the second opening control signal on the one-way stop valve is different; if the oil mist concentration does not reach the first preset concentration threshold, a closing control signal for the one-way stop valve is generated and sent to the one-way stop valve, so that the one-way stop valve adjusts the working state according to the closing control signal, and the flow of high-pressure air supplemented by the intercooler to the crankcase is changed.

7. A computer readable storage medium characterized in that, It comprises a computer program, when the computer program runs on an electronic device, the computer program is used to make the electronic device execute the steps of the method of claim 4 or 5.

8. A computer program product, characterised in that, It comprises a computer program, which is stored in a computer readable storage medium; when the processor of an electronic device reads the computer program from the computer readable storage medium, the processor executes the computer program, so that the electronic device executes the steps of the method of claim 4 or 5.

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