Oil-gas separator control method, device and equipment and storage medium

Abstract

The invention relates to the technical field of vehicles, and provides an oil-gas separator control method and device, equipment and a storage medium. The method comprises the following steps: acquiring an engine oil temperature value and a crankcase pressure value in real time when an engine runs; when the engine oil temperature value is not lower than the set temperature value and the crankcase pressure value is larger than the set pressure value, the motor rotating speed of an oil-gas separator is dynamically controlled based on a first control parameter associated with the crankcase pressure value and the maximum value of the motor rotating speed of the oil-gas separator; and when the engine oil temperature value is not lower than the set temperature value and the crankcase pressure value is not larger than the set pressure value, the motor rotating speed of the oil-gas separator is dynamically controlled based on the engine rotating speed, a second control parameter related to the torque and the motor rotating speed maximum value of the oil-gas separator. On the premise of ensuring the oil-gas separation efficiency, the rotating speed of the motor is timely reduced, and the running time of the motor is furthest reduced, so that the reliability of the motor is improved, and the service life of the motor of the oil-gas separator is prolonged.

Description

Background Art

[0002] During the combustion process of a diesel engine, some gas leaks into the crankcase from the gap between the piston, piston ring and cylinder liner. This phenomenon is called crankcase blowby. This part of gas is mainly composed of two substances: one is the particulate matter generated during the combustion of the diesel engine, and the other is the large amount of oil mist generated by the oil sprayed from the piston cooling nozzle after hitting the piston during the operation of the diesel engine, and the large amount of oil mist generated by the oil in the oil pan under the stirring of the crankshaft. These oil mists are unburned oil. They will also leak into the crankcase through the gaps in the vehicle structure.

[0003] Directly discharging the above gases into the atmosphere will cause air pollution. In order to meet the requirements on the number of gas particulate matter in relevant regulations and reduce the air pollution caused by automobile exhaust emissions, an oil-gas separator is required to reduce the proportion of unburned oil and particulate matter in the oil-gas mixture in the crankcase.

[0004] For an electric-driven oil-gas separator, the higher the motor speed, the less unburned oil and particulate matter there is in the separated oil-gas mixture. However, if the motor continues to maintain a high speed, the motor reliability will be reduced. Therefore, how to balance the oil-gas separation efficiency and motor reliability has become a problem that needs to be solved urgently. Summary of the invention

[0005] The embodiments of the present application provide an oil-gas separator control method, device, equipment and storage medium to solve the problem of how to improve the service life of the motor while ensuring the oil-gas separation efficiency.

[0006] In a first aspect, an embodiment of the present application provides an oil-gas separator control method, comprising:

[0007] Real-time collection of engine oil temperature and crankcase pressure values ​​when the engine is running;

[0008] When the engine oil temperature value is not lower than the set temperature value and the crankcase pressure value is greater than the set pressure value, dynamically controlling the motor speed of the oil-gas separator based on the first control parameter associated with the crankcase pressure value and the maximum motor speed of the oil-gas separator;

[0009] When the engine oil temperature value is not lower than the set temperature value and the crankcase pressure value is not greater than the set pressure value, the motor speed of the oil-gas separator is dynamically controlled based on the second control parameter associated with the engine speed and torque and the maximum motor speed of the oil-gas separator.

[0010] Optionally, after collecting the oil temperature value and the crankcase pressure value when the engine is running in real time, the method further includes:

[0011] When the engine oil temperature is lower than a set temperature, the motor speed of the oil-gas separator is adjusted to a maximum motor speed.

[0012] Optionally, when the crankcase pressure sensor is not installed on the engine, the method further includes:

[0013] Real-time acquisition of the oil temperature value and vehicle mileage when the engine is running;

[0014] When the engine oil temperature is not lower than the set temperature and the vehicle mileage is greater than the set mileage, the motor speed of the oil-gas separator is adjusted to the maximum motor speed;

[0015] When the oil temperature value is not lower than the set temperature value and the vehicle mileage is not greater than the set mileage, the motor speed of the oil-gas separator is dynamically controlled based on the second control parameter related to the engine speed and torque and the maximum motor speed of the oil-gas separator.

[0016] Optionally, after obtaining the oil temperature value and vehicle mileage when the engine is running in real time, the method further includes:

[0017] When the engine oil temperature is lower than a set temperature, the motor speed of the oil-gas separator is adjusted to a maximum motor speed.

[0018] In a second aspect, the embodiment of the present application further provides an oil-gas separator control device, comprising:

[0019] A collection unit, used to collect the oil temperature value and crankcase pressure value of the engine in real time when the engine is running;

[0020] a control unit, configured to dynamically control the motor speed of the oil-gas separator based on a first control parameter associated with the crankcase pressure value and a maximum motor speed of the oil-gas separator when the engine oil temperature value is not lower than a set temperature value and the crankcase pressure value is greater than a set pressure value;

[0021] When the engine oil temperature value is not lower than the set temperature value and the crankcase pressure value is not greater than the set pressure value, the motor speed of the oil-gas separator is dynamically controlled based on the second control parameter associated with the engine speed and torque and the maximum motor speed of the oil-gas separator.

[0022] Optionally, after collecting the oil temperature value and the crankcase pressure value when the engine is running in real time, the control unit is further used to:

[0023] When the engine oil temperature is lower than a set temperature, the motor speed of the oil-gas separator is adjusted to a maximum motor speed.

[0024] Optionally, when the crankcase pressure sensor is not installed on the engine, the oil-gas separator control device further includes:

[0025] The acquisition unit is used to obtain the oil temperature value and vehicle mileage when the engine is running in real time;

[0026] The control unit is used to adjust the motor speed of the oil-gas separator to the maximum motor speed when the oil temperature value is not lower than the set temperature value and the vehicle mileage is greater than the set mileage;

[0027] When the oil temperature value is not lower than the set temperature value and the vehicle mileage is not greater than the set mileage, the motor speed of the oil-gas separator is dynamically controlled based on the second control parameter related to the engine speed and torque and the maximum motor speed of the oil-gas separator.

[0028] Optionally, after obtaining the oil temperature value and the vehicle mileage when the engine is running in real time, the control unit is used to:

[0029] When the engine oil temperature is lower than a set temperature, the motor speed of the oil-gas separator is adjusted to a maximum motor speed.

[0030] In a third aspect, an embodiment of the present application also provides a diesel engine, comprising an electronic control unit, an engine, a crankcase, and an oil-gas separator, wherein when the engine is running, the electronic control unit executes the steps of any one of the above-mentioned oil-gas separator control methods, dynamically controls the motor speed of the oil-gas separator, and separates the gas in the crankcase according to the adjusted motor speed.

[0031] In a fourth aspect, an embodiment of the present application further provides a computer-readable storage medium, which includes a program code. When the program product is run on a computer device, the program code is used to enable the computer device to execute the steps of any one of the above-mentioned oil-gas separator control methods.

[0032] The beneficial effects of this application are as follows:

[0033] An embodiment of the present application provides an oil-gas separator control method, device, equipment and storage medium, the method comprising: real-time collection of engine oil temperature values ​​and crankcase pressure values ​​when the engine is running; when the engine oil temperature value is not lower than a set temperature value, and the crankcase pressure value is greater than the set pressure value, dynamically controlling the motor speed of the oil-gas separator based on a first control parameter associated with the crankcase pressure value and the maximum motor speed of the oil-gas separator; when the engine oil temperature value is not lower than the set temperature value, and the crankcase pressure value is not greater than the set pressure value, dynamically controlling the motor speed of the oil-gas separator based on a second control parameter associated with the engine speed and torque and the maximum motor speed of the oil-gas separator.

[0034] This application dynamically controls the motor speed of the oil-gas separator according to the oil temperature and crankcase pressure when the engine is running. Under the premise of ensuring the oil-gas separation efficiency, the motor speed is reduced in a timely manner to minimize the motor running time, thereby improving the motor reliability and extending the motor service life of the oil-gas separator.

[0035] Other features and advantages of the present application will be described in the following description, and partly become apparent from the description, or be understood by practicing the present application. The purpose and other advantages of the present application can be realized and obtained by the structures specifically pointed out in the written description, claims, and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0037] Figure 1A A schematic diagram of a flow chart of controlling an oil-gas separator based on an oil temperature value and a crankcase pressure value provided in an embodiment of the present application;

[0038] Figure 1B A schematic diagram of the connection between the oil-gas separator and the engine provided in the embodiment of the present application;

[0039] Figure 1C A schematic diagram of the change trend between the instantaneous value of cold PN and the speed of the oil-gas separator provided in the embodiment of the present application;

[0040] Figure 1D A logic diagram of controlling an oil-gas separator based on an oil temperature value and a crankcase pressure value provided in an embodiment of the present application;

[0041] Figure 2A A schematic diagram of a flow chart of controlling an oil-gas separator based on oil temperature and vehicle mileage provided in an embodiment of the present application;

[0042] Figure 2B A logic diagram of controlling an oil-gas separator based on vehicle mileage and crankcase pressure value provided in an embodiment of the present application;

[0043] Figure 3 A schematic diagram of the structure of an oil-gas separator control device provided in an embodiment of the present application;

[0044] Figure 4 A schematic diagram of the structure of a computer device provided in an embodiment of the present application;

[0045] Figure 5Schematic diagram of the structure of a computing device in an embodiment of the present application. DETAILED DESCRIPTION

[0046] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the technical solution of the present application, rather than all of the embodiments. Based on the embodiments recorded in the application documents, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the technical solution of the present application.

[0047] Some of the terms used in the embodiments of the present application are explained below to facilitate understanding by those skilled in the art.

[0048] 1. Crankcase: Located at the bottom of the cylinder block, its main function is to contain and store the engine oil and provide installation space for the crankshaft. The crankcase constitutes part of the engine lubrication system, ensuring that the engine oil can circulate in it and provide necessary lubrication and cooling for the moving parts of the engine.

[0049] The crankshaft is one of the important components inside the engine. It is connected to the connecting rod and converts the reciprocating linear motion of the piston into rotational motion, thereby driving the transmission system.

[0050] In short, the crankshaft is a moving part responsible for converting energy forms, while the crankcase is a static structural part that provides an installation environment for the crankshaft and other components and maintains oil circulation and pressure balance inside the engine.

[0051] 2. Oil-gas separator: It is usually installed at the breathing port of the engine crankcase or the exhaust pipe. It is used to separate the unburned oil and particulate matter in the oil-gas mixture of the crankcase, and reduce the emission of unburned oil and particulate matter from the breathing port of the crankcase to the outside of the engine.

[0052] 3. Electronic Control Unit (ECU): It is a core on-board computer system responsible for managing and controlling various electronic systems and components of the vehicle. Its main functions include: data acquisition and processing, engine management, fault diagnosis, driving assistance control, etc.

[0053] 4. Operating conditions: refers to the working state of a device, system or industrial process under specific conditions. In many fields such as automotive engineering, machinery manufacturing, and power systems, operating conditions usually involve various parameters during operation, such as load size, speed, ambient temperature, pressure, etc. Understanding and analyzing operating conditions is crucial for evaluating performance, optimizing design, fault diagnosis, and energy conservation and emission reduction. For example, when discussing automobile engines, different operating conditions may refer to the performance and efficiency of the engine under different operating conditions such as idling, full speed driving, and climbing.

[0054] 5. Oil-gas separation efficiency: the ratio between the number of particles in the oil-gas mixture after separation in the crankcase and the number of particles in the oil-gas mixture before separation in the crankcase.

[0055] 6. Particle Number (PN): The number of particulate matter in the engine exhaust, which includes the oil-gas mixture leaking from the crankcase.

[0056] The following is a brief introduction to the design concept of the embodiment of the present application:

[0057] During the combustion process of a diesel engine, some gas leaks into the crankcase from the gap between the piston, piston ring and cylinder liner. This phenomenon is called crankcase blowby. This part of gas is mainly composed of two substances: one is the particulate matter generated during the combustion of the diesel engine, and the other is the large amount of oil mist generated by the oil sprayed from the piston cooling nozzle after hitting the piston during the operation of the diesel engine, and the large amount of oil mist generated by the oil in the oil pan under the stirring of the crankshaft. These oil mists are unburned oil. They will also leak into the crankcase through the gaps in the vehicle structure.

[0058] Directly discharging the above gases into the atmosphere will cause air pollution. In order to meet the requirements on the number of gas particulate matter in relevant regulations and reduce the air pollution caused by automobile exhaust emissions, an oil-gas separator is required to reduce the proportion of unburned oil and particulate matter in the oil-gas mixture in the crankcase.

[0059] For an electric-driven oil-gas separator, the higher the motor speed, the less unburned oil and particulate matter there is in the separated oil-gas mixture. However, if the motor continues to maintain a high speed, the motor reliability will be reduced. Therefore, how to balance the oil-gas separation efficiency and motor reliability has become a problem that needs to be solved urgently.

[0060] In view of this, the embodiment of the present application provides an oil-gas separator control method, device, equipment and storage medium. The method specifically includes: real-time acquisition of the oil temperature value and crankcase pressure value when the engine is running; when the oil temperature value is not lower than the set temperature value, and the crankcase pressure value is greater than the set pressure value, based on the first control parameter associated with the crankcase pressure value and the maximum motor speed of the oil-gas separator, dynamically control the motor speed of the oil-gas separator; when the oil temperature value is not lower than the set temperature value, and the crankcase pressure value is not greater than the set pressure value, based on the second control parameter associated with the engine speed and torque and the maximum motor speed of the oil-gas separator, dynamically control the motor speed of the oil-gas separator.

[0061] This application dynamically controls the motor speed of the oil-gas separator according to the oil temperature and crankcase pressure when the engine is running. Under the premise of ensuring the oil-gas separation efficiency, the motor speed is reduced in a timely manner to minimize the motor running time, thereby improving the motor reliability and extending the motor service life of the oil-gas separator.

[0062] The preferred embodiments of the present application are described below in conjunction with the drawings in the specification. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present application, and are not used to limit the present application. In addition, the embodiments and features in the embodiments of the present application may be combined with each other if there is no conflict.

[0063] Combination Figure 1A The flow chart shown specifically introduces how to dynamically control the motor speed of the oil-gas separator according to the oil temperature value and the crankcase pressure value when the engine is running.

[0064] S101: collecting the oil temperature value and the crankcase pressure value when the engine is running in real time.

[0065] like Figure 1B As shown in the figure, the inlet of the oil-gas separator is connected to the crankcase of the engine. The oil-gas mixture in the crankcase enters the oil-gas separator through the oil inlet pipeline. The larger oil droplets in the oil-gas mixture are thrown out by centrifugal force. Due to gravity, these oil droplets will be deposited at the bottom of the oil-gas separator and discharged through the oil drain pipeline. At the same time, the electric-driven oil-gas separator also uses electrostatic field technology. Inside the separator, the oil droplets in the oil-gas mixture are charged by a high-voltage electric field. The charged oil droplets are attracted to the oil collecting plate or the pipe wall under the action of the electric field force, achieving a more efficient separation effect.

[0066] A crankcase pressure sensor is installed inside the crankcase or on the exhaust pipe to detect the internal pressure status of the crankcase. This pressure data is very important because it can indirectly reflect the working condition of the crankcase ventilation system and help determine whether there are problems such as excessive crankcase leakage or oil vapor accumulation. Abnormal crankcase pressure values ​​may indicate poor sealing, crankcase ventilation valve failure or other factors that cause pressure imbalance. Timely monitoring of this parameter helps prevent engine damage and ensure normal engine operation.

[0067] The engine is equipped with an oil temperature sensor for detecting the temperature of the engine oil. This data is also very important because the viscosity of the oil changes with temperature, affecting its lubrication effect. Too high or too low oil temperature may cause damage to the engine. When the oil temperature is too high, the oil may become too thin, reducing its lubrication ability and increasing the risk of wear on engine parts. Conversely, if the oil temperature is too low, the oil may become too viscous, increasing the resistance when the engine starts and the internal friction when it runs.

[0068] Through the feedback information from the oil temperature sensor, the electronic control unit can timely adjust the working status of the cooling system, the oil circulation strategy or warn the driver to ensure that the engine operates within the most suitable oil temperature range, protect the engine from damage and maintain optimal performance.

[0069] The electronic control unit is connected to the oil-gas separator, crankcase pressure sensor and oil temperature sensor respectively. Through the above-mentioned sensor components, the oil temperature value and crankcase pressure value of the engine during operation are collected in real time, so as to dynamically control the motor speed of the oil-gas separator based on the two parameters of oil temperature value and crankcase pressure value. Under the premise of ensuring the oil-gas separation efficiency, the motor speed is reduced in time to minimize the motor running time, so as to improve the motor reliability and thus extend the motor service life of the oil-gas separator.

[0070] S102: When the engine oil temperature is not lower than the set temperature and the crankcase pressure is greater than the set pressure, the motor speed of the oil-gas separator is dynamically controlled based on the first control parameter associated with the crankcase pressure and the maximum motor speed of the oil-gas separator; when the engine oil temperature is not lower than the set temperature and the crankcase pressure is not greater than the set pressure, the motor speed of the oil-gas separator is dynamically controlled based on the second control parameter associated with the engine speed and torque and the maximum motor speed of the oil-gas separator.

[0071] Figure 1CThe figure shows the relationship between the PN of the crankcase oil-gas mixture after separation by the oil-gas separator and the motor speed of the oil-gas separator. When the driving modes of the oil-gas separator are oil drive (referred to as oil drive) and motor drive (referred to as electric drive), the motor speed of the electric-driven oil-gas separator can be kept constant, and the motor speed of the oil-driven oil-gas separator changes with the engine operating conditions. However, the PN change trends of the two driving modes are consistent, and only the peak values ​​are different. Therefore, the motor of the oil-gas separator does not need to be maintained at a high speed all the time, and PN control can also be achieved.

[0072] like Figure 1D As shown, in step 102, the motor speed of the oil-gas separator is reasonably set according to different situations.

[0073] (1) When the oil temperature is not lower than the set temperature T and the crankcase pressure is greater than the set pressure P, the motor speed of the oil-gas separator is set to the first control parameter k 1 The maximum motor speed N max The product k 1 *N max . Among them, a first mapping relationship between the crankcase pressure value and the first control parameter is obtained, the collected crankcase pressure value is matched with the mapping relationship, and the first control parameter corresponding to the crankcase pressure value successfully matched in the first mapping relationship is used as the control parameter for adjusting the motor speed in this application.

[0074] For example, through test calibration, the first mapping relationship between the crankcase pressure value and the first control parameter shown in Table 1 is obtained. It can be seen from the table that the first control parameter is positively correlated with the crankcase pressure state, that is, as the crankcase pressure value increases, the first control parameter also increases, and the motor speed after adjustment is also faster to ensure the oil-gas separation efficiency of the oil-gas separator. However, when the oil-gas separator is applied to different engines, the first mapping relationship between the crankcase pressure value and the first control parameter and the set pressure value and the set temperature value can be changed through test calibration.

[0075] Table 1

[0076]

[0077] (2) When the oil temperature is not lower than the set temperature and the crankcase pressure is not greater than the set pressure, the motor speed of the oil-gas separator is set to the second control parameter k 2 Maximum motor speed N of the oil-gas separator max The product k 2 *N max. Among them, the second mapping relationship between engine speed-torque-second control parameter is obtained, the collected engine speed and torque are matched with the second mapping relationship, and the second control parameter corresponding to the successfully matched engine speed-torque in the second mapping relationship is used as the control parameter for adjusting the motor speed in this application.

[0078] For example, through test calibration, the second mapping relationship between engine speed-torque-second control parameter shown in Table 2 is obtained. It can be seen from the table that the second control parameter is determined by the engine speed and torque, and the second control parameter shows a phased growth trend. When the engine speed and torque increase, a larger second control parameter is set to adjust the motor speed to a higher speed to ensure the oil-gas separation efficiency of the oil-gas separator. However, when the oil-gas separator is applied to different engines, the second mapping relationship between engine speed-torque-second control parameter and the set pressure value and set temperature value can be changed through test calibration.

[0079] Table 2

[0080]

[0081] (3) When the engine oil temperature is lower than the set temperature, adjust the motor speed of the oil-gas separator to the maximum motor speed.

[0082] When the engine oil temperature is lower than the set temperature, it means that the engine is in a cold start state, the gap between the piston ring and the cylinder liner is large, and the crankcase leakage is high. Adjusting the motor speed of the oil-gas separator to the maximum motor speed is beneficial to separate the number of particles in the oil-gas mixture to within the specified value, reducing air pollution caused by automobile exhaust emissions, and ensuring the oil-gas separation efficiency of the oil-gas separator.

[0083] However, some engines may not have a crankcase pressure sensor installed. When the crankcase pressure sensor is not installed on the engine, in order to address the problem of increased crankcase leakage due to wear of the four-way matching when the engine is running, this application dynamically controls the motor speed of the oil-gas separator based on the oil temperature value and vehicle mileage when the engine is running. Under the premise of ensuring the oil-gas separation efficiency, the motor speed is reduced in a timely manner to minimize the motor operation time, thereby improving the motor reliability and extending the motor service life of the oil-gas separator.

[0084] Combination Figure 2A The flow chart shown specifically introduces how to dynamically control the motor speed of the oil-gas separator according to the oil temperature value when the engine is running and the vehicle mileage.

[0085] S201: Obtaining the oil temperature value and vehicle mileage when the engine is running in real time.

[0086] The electronic control unit collects the oil temperature value when the engine is running and the electrical signal generated when the wheel rotates in real time through the oil temperature sensor installed on the engine and the vehicle speed sensor installed near the gearbox, drive shaft or wheel.

[0087] When the wheels rotate, the speed sensor generates corresponding electrical signals, the frequency of which is proportional to the wheel speed. These electrical signals are transmitted to the electronic control unit, which has special circuits and programs that can interpret these electrical signals and convert them into specific vehicle speed data, thereby obtaining the vehicle mileage when the engine is running.

[0088] S202: When the engine oil temperature is not lower than the set temperature and the vehicle mileage is greater than the set mileage, the motor speed of the oil-gas separator is adjusted to the maximum motor speed; when the engine oil temperature is not lower than the set temperature and the vehicle mileage is not greater than the set mileage, the motor speed of the oil-gas separator is dynamically controlled based on the second control parameter related to the engine speed and torque and the maximum motor speed of the oil-gas separator.

[0089] like Figure 2B As shown, in step 202, the motor speed of the oil-gas separator is dynamically controlled according to different situations.

[0090] (1) When the oil temperature is not lower than the set temperature T and the vehicle mileage is greater than the set mileage L, the motor speed of the oil-gas separator is adjusted to the maximum motor speed. However, when the oil-gas separator is applied to different engines, the set mileage can be changed through test calibration. For example, the vehicle mileage when the crankcase leakage reaches 1.5 times the calibration is used as the set mileage of this application.

[0091] (2) When the oil temperature is not lower than the set temperature and the vehicle mileage is not greater than the set mileage, the motor speed of the oil-gas separator is set to the second control parameter k 2 Maximum motor speed of oil-gas separator N max The product k 2 *N max . Among them, the second mapping relationship between engine speed-torque-second control parameter is obtained, the collected engine speed and torque are matched with the second mapping relationship, and the second control parameter corresponding to the successfully matched engine speed-torque in the second mapping relationship is used as the control parameter for adjusting the motor speed in this application.

[0092] (3) When the engine oil temperature is lower than the set temperature, adjust the motor speed of the oil-gas separator to the maximum motor speed.

[0093] When the engine oil temperature is lower than the set temperature, it means that the engine is in a cold start state, the gap between the piston ring and the cylinder liner is large, and the crankcase leakage is high. Adjusting the motor speed of the oil-gas separator to the maximum motor speed is beneficial to separate the number of particles in the oil-gas mixture to within the specified value, reducing air pollution caused by automobile exhaust emissions, and ensuring the oil-gas separation efficiency of the oil-gas separator.

[0094] This application adds the requirement of controlling the motor speed based on the oil temperature value, and reasonably sets the motor speed of the oil-gas separator according to the crankcase pressure and engine operating conditions when the engine is running. Under the premise of ensuring the oil-gas separation efficiency, the motor speed is reduced in a timely manner to minimize the motor running time, so as to improve the motor reliability and thus extend the motor service life of the oil-gas separator.

[0095] Moreover, when the crankcase pressure sensor is not installed on the engine, the present application can also dynamically control the motor speed of the oil-gas separator according to the oil temperature value and vehicle mileage when the engine is running, in order to solve the problem of increased crankcase leakage due to wear of the four matching parts when the engine is running. Under the premise of ensuring the oil-gas separation efficiency, the motor speed is reduced in time to minimize the motor running time, so as to improve the motor reliability and thus extend the motor service life of the oil-gas separator.

[0096] Based on the same inventive concept as the above method embodiment, the present application embodiment also provides a structural schematic diagram of an oil-gas separator control device. Figure 3 As shown, the oil-gas separator control device 300 may include:

[0097] The acquisition unit 301 is used to acquire the oil temperature value and the crankcase pressure value in real time when the engine is running;

[0098] The control unit 302 is used to dynamically control the motor speed of the oil-gas separator based on the first control parameter associated with the crankcase pressure value and the maximum motor speed of the oil-gas separator when the oil temperature value is not lower than the set temperature value and the crankcase pressure value is greater than the set pressure value;

[0099] When the engine oil temperature is not lower than the set temperature and the crankcase pressure is not greater than the set pressure, the motor speed of the oil-gas separator is dynamically controlled based on the second control parameter associated with the engine speed and torque and the maximum motor speed of the oil-gas separator.

[0100] Optionally, after collecting the oil temperature value and the crankcase pressure value when the engine is running in real time, the control unit 302 is further used to:

[0101] When the oil temperature is lower than the set temperature, adjust the motor speed of the oil-gas separator to the maximum motor speed.

[0102] Optionally, when the crankcase pressure sensor is not installed on the engine, the oil-gas separator control device 300 further includes:

[0103] The acquisition unit 301 is used to obtain the oil temperature value and vehicle mileage when the engine is running in real time;

[0104] The control unit 302 is used to adjust the motor speed of the oil-gas separator to the maximum motor speed when the oil temperature value is not lower than the set temperature value and the vehicle mileage is greater than the set mileage;

[0105] When the oil temperature is not lower than the set temperature and the vehicle mileage is not greater than the set mileage, the motor speed of the oil-gas separator is dynamically controlled based on the second control parameter associated with the engine speed and torque and the maximum motor speed of the oil-gas separator.

[0106] Optionally, after obtaining the oil temperature value and the vehicle mileage when the engine is running in real time, the control unit 302 is used to:

[0107] When the oil temperature is lower than the set temperature, adjust the motor speed of the oil-gas separator to the maximum motor speed.

[0108] After introducing the oil-gas separator control method and device according to an exemplary embodiment of the present application, next, a diesel engine according to another exemplary embodiment of the present application is introduced.

[0109] Those skilled in the art will appreciate that various aspects of the present application may be implemented as a system, method or program product. Therefore, various aspects of the present application may be specifically implemented in the following forms, namely: a complete hardware implementation, a complete software implementation (including firmware, microcode, etc.), or a combination of hardware and software, which may be collectively referred to as "circuit", "module" or "system" herein.

[0110] Based on the same inventive concept as the above method embodiment, the present application embodiment also provides a diesel engine, see Figure 4 As shown, the diesel engine 400 may include at least an electronic control unit 401, an engine 402, a crankcase 403, and an oil-gas separator 404. When the engine 402 is running, the electronic control unit 401 executes the steps of any one of the above-mentioned oil-gas separator control methods, dynamically controls the motor speed of the oil-gas separator 404, and separates the gas in the crankcase 403 according to the adjusted motor speed. For example, the electronic control unit 401 may execute the following steps: Figure 1A or Figure 2A Follow the steps shown in .

[0111] Refer to the following Figure 5hereinafter, a computing device 500 according to this embodiment of the present application is described. Figure 5 The computing device 500 is merely an example and should not bring any limitation to the functions and scope of use of the embodiments of the present application.

[0112] like Figure 5 As shown, the computing device 500 is in the form of a general computing device. The components of the computing device 500 may include but are not limited to: at least one processing unit 501, at least one storage unit 502, and a bus 503 connecting different system components (including the storage unit 502 and the processing unit 501).

[0113] Bus 503 represents one or more of several types of bus structures, including a memory bus or memory controller, a peripheral bus, a processor, or a local bus using any of a variety of bus architectures.

[0114] The storage unit 502 may include a readable medium in the form of a volatile memory, such as a random access memory (RAM) 5021 and / or a cache memory unit 5022 , and may further include a read-only memory (ROM) 5023 .

[0115] The storage unit 502 may also include a program / utility 5025 having a set (at least one) of program modules 5024, such program modules 5024 including but not limited to: an operating system, one or more application programs, other program modules, and program data, each of which or some combination may include an implementation of a network environment.

[0116] The computing device 500 may also communicate with one or more external devices 504 (e.g., keyboards, pointing devices, etc.), may also communicate with one or more devices that enable a user to interact with the computing device 500, and / or communicate with any device that enables the computing device 500 to communicate with one or more other computing devices (e.g., routers, modems, etc.). Such communication may be performed via an input / output (I / O) interface 505. In addition, the computing device 500 may also communicate with one or more networks (e.g., a local area network (LAN), a wide area network (WAN), and / or a public network, such as the Internet) via a network adapter 506. As shown, the network adapter 506 communicates with other modules for the computing device 500 via a bus 503. It should be understood that, although not shown in the figure, other hardware and / or software modules may be used in conjunction with the computing device 500, including but not limited to: microcode, device drivers, redundant processors, external disk drive arrays, RAID systems, tape drives, and data backup storage systems.

[0117] Based on the same inventive concept as the above method embodiment, various aspects of the oil-gas separator control method provided in the present application can also be implemented in the form of a program product, which includes a program code. When the program product is run on a computer device, the program code is used to enable the computer device to execute the steps of the oil-gas separator control method according to various exemplary embodiments of the present application described above in this specification. For example, the electronic device can execute the following steps: Figure 1A or Figure 2A Follow the steps shown in .

[0118] The program product may use any combination of one or more readable media. The readable medium may be a readable signal medium or a readable storage medium. The readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or device, or any combination of the above. More specific examples of readable storage media (a non-exhaustive list) include: an electrical connection with one or more wires, a portable disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above.

[0119] Although the preferred embodiments of the present application have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present application.

[0120] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. A method for controlling an oil-gas separator, characterized in that: include: Real-time collection of engine oil temperature and crankcase pressure values ​​when the engine is running; When the engine oil temperature value is not lower than the set temperature value and the crankcase pressure value is greater than the set pressure value, dynamically controlling the motor speed of the oil-gas separator based on the first control parameter associated with the crankcase pressure value and the maximum motor speed of the oil-gas separator; When the engine oil temperature value is not lower than the set temperature value and the crankcase pressure value is not greater than the set pressure value, the motor speed of the oil-gas separator is dynamically controlled based on the second control parameter associated with the engine speed and torque and the maximum motor speed of the oil-gas separator.

2. The method according to claim 1, characterized in that After collecting the oil temperature value and the crankcase pressure value in real time when the engine is running, the method further includes: When the engine oil temperature is lower than a set temperature, the motor speed of the oil-gas separator is adjusted to a maximum motor speed.

3. The method according to claim 1, characterized in that When the crankcase pressure sensor is not installed on the engine, the method further includes: Real-time acquisition of the oil temperature value and vehicle mileage when the engine is running; When the engine oil temperature is not lower than the set temperature and the vehicle mileage is greater than the set mileage, the motor speed of the oil-gas separator is adjusted to the maximum motor speed; When the oil temperature value is not lower than the set temperature value and the vehicle mileage is not greater than the set mileage, the motor speed of the oil-gas separator is dynamically controlled based on the second control parameter related to the engine speed and torque and the maximum motor speed of the oil-gas separator.

4. The method according to claim 3, characterized in that After obtaining the oil temperature value and the vehicle mileage when the engine is running in real time, the method further includes: When the engine oil temperature is lower than a set temperature, the motor speed of the oil-gas separator is adjusted to a maximum motor speed.

5. An oil-gas separator control device, characterized in that: include: A collection unit, used to collect the oil temperature value and crankcase pressure value of the engine in real time when the engine is running; a control unit, configured to dynamically control the motor speed of the oil-gas separator based on a first control parameter associated with the crankcase pressure value and a maximum motor speed of the oil-gas separator when the engine oil temperature value is not lower than a set temperature value and the crankcase pressure value is greater than a set pressure value; When the engine oil temperature value is not lower than the set temperature value and the crankcase pressure value is not greater than the set pressure value, the motor speed of the oil-gas separator is dynamically controlled based on the second control parameter associated with the engine speed and torque and the maximum motor speed of the oil-gas separator.

6. The device according to claim 5, characterized in that After collecting the oil temperature value and the crankcase pressure value in real time when the engine is running, the control unit is also used to: When the engine oil temperature is lower than a set temperature, the motor speed of the oil-gas separator is adjusted to a maximum motor speed.

7. The device according to claim 5, characterized in that When the crankcase pressure sensor is not installed on the engine, the oil-gas separator control device further includes: The acquisition unit is used to obtain the oil temperature value and vehicle mileage when the engine is running in real time; The control unit is used to adjust the motor speed of the oil-gas separator to the maximum motor speed when the oil temperature value is not lower than the set temperature value and the vehicle mileage is greater than the set mileage; When the oil temperature value is not lower than the set temperature value and the vehicle mileage is not greater than the set mileage, the motor speed of the oil-gas separator is dynamically controlled based on the second control parameter related to the engine speed and torque and the maximum motor speed of the oil-gas separator.

8. The device according to claim 7, characterized in that After obtaining the oil temperature value and vehicle mileage when the engine is running in real time, the control unit is used to: When the engine oil temperature is lower than a set temperature, the motor speed of the oil-gas separator is adjusted to a maximum motor speed.

9. A diesel engine, characterized in that: It includes an electronic control unit, an engine, a crankcase, and an oil-gas separator, wherein when the engine is running, the electronic control unit executes the steps of the method described in any one of claims 1 to 4, dynamically controls the motor speed of the oil-gas separator, and separates the gas in the crankcase according to the adjusted motor speed.

10. A computer-readable storage medium, characterized in that: It comprises program codes, and when the program codes are run on a diesel engine, the program codes are used to make the diesel engine execute the steps of the method according to any one of claims 1 to 4.

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