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

Abstract

The present application relates to the field of vehicle technology and provides an oil-gas separator control method, device, equipment, and storage medium. The method includes: real-time acquisition of engine oil temperature and crankcase pressure values ​​during engine operation; when the engine oil temperature is not lower than a set temperature value and the crankcase pressure is greater than the set pressure value, dynamically controlling the oil-gas separator motor speed based on a first control parameter associated with the crankcase pressure value and the maximum oil-gas separator motor speed; and when the engine oil temperature is not lower than the set temperature value and the crankcase pressure is not greater than the set pressure value, dynamically controlling the oil-gas separator motor speed based on a second control parameter associated with engine speed and torque and the maximum oil-gas separator motor speed. While ensuring oil-gas separation efficiency, the motor speed is appropriately reduced to minimize motor operating time, thereby improving motor reliability and extending the service life of the oil-gas separator motor.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology and provides an oil-gas separator control method, device, equipment and storage medium. Background Art

[0002] During diesel engine combustion, some gases leak into the crankcase through the gaps between the piston, piston rings, and cylinder liner. This phenomenon is known as crankcase blowby. This gas is primarily composed of two components: particulate matter generated during diesel engine combustion; and oil mist generated when the oil sprayed from the piston cooling nozzles strikes the pistons during engine operation. Furthermore, oil mist generated by the sump oil agitation caused by the crankshaft also forms a significant amount of unburned oil. This mist can also leak into the crankcase through 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 electrically driven oil-gas separators, higher motor speeds reduce the proportion of unburned oil and particulate matter in the separated oil-gas mixture. However, maintaining a high motor speed can reduce motor reliability. Therefore, balancing oil-gas separation efficiency and motor reliability has become a pressing issue. 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 ​​during engine operation;

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

[0009] 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, 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 and crankcase pressure values ​​in real time when the engine is running, the method further includes:

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

[0012] Optionally, when the engine is not equipped with a crankcase pressure sensor, the method further includes:

[0013] Real-time acquisition of the engine oil temperature 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, adjusting the motor speed of the oil-gas separator 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 associated with 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 of the engine in real time, the method further includes:

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

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

[0019] The acquisition unit is used to collect the oil temperature and crankcase pressure values ​​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 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 in real time when the engine is running, the control unit is further configured to:

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

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

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

[0026] The control unit is configured to adjust the motor speed of the oil-gas separator to a maximum motor speed when the engine oil temperature is not lower than a set temperature and the vehicle mileage is greater than a 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 associated with the engine speed and torque and the maximum motor speed of the oil-gas separator.

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

[0029] When the engine oil temperature is lower than the 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, which 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 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 comprising 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 a 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 speed of the oil-gas separator motor based on the engine oil temperature and crankcase pressure during operation. While ensuring oil-gas separation efficiency, the motor speed is appropriately reduced to minimize motor operating time, thereby improving motor reliability and extending the life of the oil-gas separator motor.

[0035] Other features and advantages of the present application will be described in the following description, and in part will become apparent from the description, or will be understood by practicing the present application. The purposes and other advantages of the present application can be realized and obtained by the structures particularly 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 for controlling an oil-gas separator based on an engine 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 an embodiment of the present application;

[0039] Figure 1C A schematic diagram of the changing trend between the instantaneous cold PN value and the oil-gas separator speed provided in an 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 for controlling an oil-gas separator based on oil temperature and vehicle mileage according to 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 provided in an embodiment of the present application;

[0043] Figure 3 A schematic structural diagram 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 5 This is a schematic diagram of the structure of a computing device in an embodiment of the present application. DETAILED DESCRIPTION

[0046] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of the technical solutions of this application, but not all of them. Based on the embodiments described in this application document, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the technical solutions of this application.

[0047] The following explains some of the terms used in the embodiments of the present application to facilitate understanding by those skilled in the art.

[0048] 1. Crankcase: Located below the cylinder block, its primary function is to contain and store engine oil while also providing mounting space for the crankshaft. The crankcase forms part of the engine's lubrication system, ensuring that the oil circulates throughout it, providing the necessary lubrication and cooling for the engine's moving parts.

[0049] The crankshaft is one of the important components inside the engine. It connects 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 component responsible for converting energy forms, while the crankcase is a static structural component 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 engine crankcase breathing port or exhaust pipe to separate the unburned oil and particulate matter in the crankcase oil-gas mixture, reducing the amount of unburned oil and particulate matter discharged from the crankcase breathing port to the outside of the engine.

[0052] 3. Electronic Control Unit (ECU): This is a core onboard computer system responsible for managing and controlling the vehicle's various electronic systems and components. Its main functions include data acquisition and processing, engine management, fault diagnosis, and driver assistance control.

[0053] 4. Operating conditions: This refers to the operating state of a device, system, or industrial process under specific conditions. In fields such as automotive engineering, machinery manufacturing, and power systems, operating conditions typically involve various operating parameters such as load, speed, ambient temperature, and pressure. Understanding and analyzing operating conditions is crucial for performance evaluation, design optimization, fault diagnosis, and energy conservation and emission reduction. For example, when discussing an automotive engine, different operating conditions might refer to the engine's performance and efficiency under different operating conditions, such as idling, full speed, and climbing a hill.

[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 this application:

[0057] During diesel engine combustion, some gases leak into the crankcase through the gaps between the piston, piston rings, and cylinder liner. This phenomenon is known as crankcase blowby. This gas is primarily composed of two components: particulate matter generated during diesel engine combustion; and oil mist generated when the oil sprayed from the piston cooling nozzles strikes the pistons during engine operation. Furthermore, oil mist generated by the sump oil agitation caused by the crankshaft also forms a significant amount of unburned oil. This mist can also leak into the crankcase through 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 electrically driven oil-gas separators, higher motor speeds reduce the proportion of unburned oil and particulate matter in the separated oil-gas mixture. However, maintaining a high motor speed can reduce motor reliability. Therefore, balancing oil-gas separation efficiency and motor reliability has become a pressing issue.

[0060] In view of this, embodiments of the present application provide an oil-gas separator control method, device, equipment, and storage medium. The method specifically includes: collecting the oil temperature and crankcase pressure values ​​in real time during engine operation; when the oil temperature is not lower than a set temperature value and the crankcase pressure is greater than the set pressure value, dynamically controlling the oil-gas separator motor speed based on a first control parameter associated with the crankcase pressure value and the maximum oil-gas separator motor speed; and when the oil temperature is not lower than the set temperature value and the crankcase pressure is not greater than the set pressure value, dynamically controlling the oil-gas separator motor speed based on a second control parameter associated with the engine speed and torque and the maximum oil-gas separator motor speed.

[0061] This application dynamically controls the speed of the oil-gas separator motor based on the engine oil temperature and crankcase pressure during operation. While ensuring oil-gas separation efficiency, the motor speed is appropriately reduced to minimize motor operating time, thereby improving motor reliability and extending the life of the oil-gas separator motor.

[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 can be combined with each other if there is no conflict.

[0063] Combine Figure 1A The flow diagram shown specifically describes 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: Real-time collection of engine oil temperature and crankcase pressure values ​​during engine operation.

[0065] like Figure 1B As shown, the inlet of the oil-gas separator is connected to the engine's crankcase. The oil-gas mixture in the crankcase enters the oil-gas separator through the oil inlet line. Centrifugal force ejects larger oil droplets from the oil-gas mixture. Due to gravity, these oil droplets settle at the bottom of the oil-gas separator and are discharged through the oil drain line. The electrically driven oil-gas separator also uses electrostatic field technology. Inside the separator, a high-voltage electric field charges the oil droplets in the oil-gas mixture. The charged oil droplets are attracted to the oil collecting plate or pipe wall by the electric field force, achieving more efficient separation.

[0066] A crankcase pressure sensor is installed inside the crankcase or on the exhaust line to monitor the internal crankcase pressure. This pressure reading is crucial because it indirectly reflects the operating status of the crankcase ventilation system and helps determine whether there are problems such as excessive crankcase air leakage or oil vapor accumulation. Abnormal crankcase pressure may indicate a poor seal, a crankcase ventilation valve malfunction, or other factors leading to pressure imbalance. Promptly monitoring this parameter helps prevent engine damage and ensure normal engine operation.

[0067] The engine is equipped with an oil temperature sensor to monitor the temperature of the engine oil. This data is crucial because the viscosity of the oil changes with temperature, affecting its lubrication effectiveness. Excessively high or low oil temperatures can damage the engine. When the oil temperature is too high, it may become too thin, reducing its lubrication ability and increasing the risk of wear on engine components. Conversely, when the oil temperature is too low, it may become too viscous, increasing resistance during engine starting and internal friction during operation.

[0068] Through the feedback information of 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 when the engine is running 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, thereby improving the motor reliability and extending the service life of the oil-gas separator motor.

[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 oil-gas separator is driven by oil (referred to as oil drive) and motor (referred to as electric drive), the motor speed of the electric-driven oil-gas separator can remain 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 kept at a high speed all the time to achieve PN control.

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

[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 k1 and the maximum motor speed N max The product of k1*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 experimental calibration, the first mapping relationship between crankcase pressure and the first control parameter is obtained, as shown in Table 1. This table shows a positive correlation between the first control parameter and the crankcase pressure state. Specifically, as the crankcase pressure increases, the first control parameter also increases, and the adjusted motor speed increases, thereby ensuring 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, as well as the set pressure and temperature values, can be modified through experimental 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 k2 and the maximum motor speed N of the oil-gas separator. max The product of k2*N max . Among them, a second mapping relationship between engine speed, torque and 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 experimental calibration, the second mapping relationship between engine speed, torque, and the second control parameter (see Table 2) was obtained. This table shows that the second control parameter is determined by engine speed and torque, and exhibits a phased increase. As engine speed and torque increase, a larger second control parameter is set, adjusting the motor speed to a higher speed to ensure the oil-gas separation efficiency of the oil-gas separator. However, when applying the oil-gas separator to different engines, the second mapping relationship between engine speed, torque, and the second control parameter, as well as the set pressure and temperature values, can be modified through experimental calibration.

[0079] Table 2

[0080]

[0081] (3) When the 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 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 separating the number of particles in the oil-gas mixture to within the specified value, reducing the 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 be equipped with a crankcase pressure sensor. In the absence of a crankcase pressure sensor, this application addresses the issue of increased crankcase leakage due to wear of the four-way matching system during engine operation. This application dynamically controls the speed of the oil-gas separator motor based on the engine's oil temperature and vehicle mileage. While ensuring oil-gas separation efficiency, the motor speed is appropriately reduced to minimize motor operating time, thereby improving motor reliability and extending the life of the oil-gas separator motor.

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

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

[0086] The electronic control unit collects the oil temperature value when the engine is running and the electrical signal generated by the rotation of the wheel 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 an electrical signal whose frequency is proportional to the wheel speed. These signals are transmitted to the electronic control unit, which contains specialized circuits and programs that interpret these signals and convert them into specific vehicle speed data, thereby determining the vehicle's mileage while 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 engine oil temperature is not lower than the set temperature value 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 blowby reaches 1.5 times the calibration value is used as the set mileage for 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 k2 and the maximum motor speed N of the oil-gas separator. max The product of k2*N max . Among them, a second mapping relationship between engine speed, torque and 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 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 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 separating the number of particles in the oil-gas mixture to within the specified value, reducing the air pollution caused by automobile exhaust emissions, and ensuring the oil-gas separation efficiency of the oil-gas separator.

[0094] This application adds a requirement to control the motor speed based on the oil temperature. The oil-gas separator motor speed is appropriately set based on the crankcase pressure and engine operating conditions during engine operation. While ensuring oil-gas separation efficiency, the motor speed is appropriately reduced to minimize motor operating time, thereby improving motor reliability and extending the life of the oil-gas separator motor.

[0095] Furthermore, if the engine is not equipped with a crankcase pressure sensor, the present application can also dynamically control the oil-gas separator motor speed based on the engine oil temperature and vehicle mileage during operation to address the problem of increased crankcase leakage caused by wear of the four-way matching system during engine operation. While ensuring oil-gas separation efficiency, the motor speed is reduced in a timely manner to minimize motor operation time, thereby improving motor reliability and extending the service life of the oil-gas separator motor.

[0096] Based on the same inventive concept as the above method embodiment, the present application embodiment also provides a structural 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 and crankcase pressure of the engine in real time when the engine is running;

[0098] a control unit 302 for dynamically controlling 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;

[0099] 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 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 in real time when the engine is running, the control unit 302 is further configured 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 in real time when the engine is running;

[0104] The control unit 302 is configured to adjust the motor speed of the oil-gas separator to a maximum motor speed when the engine oil temperature is not lower than a set temperature and the vehicle mileage is greater than a 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 vehicle mileage in real time when the engine is running, the control unit 302 is configured 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, a diesel engine according to another exemplary embodiment of the present application will be introduced next.

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

[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 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 5 hereinafter, 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 limit the functions and scope of use of the embodiments of the present application.

[0112] like Figure 5As shown, computing device 500 is implemented as a general-purpose computing device. Components of 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 various system components (including storage unit 502 and 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, and a processor or 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] Computing device 500 may also communicate with one or more external devices 504 (e.g., a keyboard, pointing device, etc.), one or more devices that enable a user to interact with computing device 500, and / or any device that enables computing device 500 to communicate with one or more other computing devices (e.g., a router, modem, etc.). Such communication may occur via input / output (I / O) interface 505. Furthermore, 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 network adapter 506. As shown, network adapter 506 communicates with other modules of computing device 500 via bus 503. It should be understood that, although not shown, other hardware and / or software modules may be used in conjunction with 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-mentioned method embodiment, various aspects of the oil-gas separator control method provided in this application can also be implemented in the form of a program product, which includes 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 employ 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 component, or any combination thereof. 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 thereof.

[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 that fall within the scope of the present application.

[0120] Obviously, those skilled in the art may make various changes and modifications to this application without departing from the spirit and scope of this application. Thus, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalents, this application is 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 ​​during engine operation; When the engine oil temperature is not lower than the set temperature and the crankcase pressure is greater than the set pressure, dynamically controlling the motor speed of the oil-gas separator based on a first control parameter associated with the crankcase pressure and a 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 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, wherein After collecting the oil temperature and crankcase pressure values ​​in real time when the engine is running, the method further includes: When the engine oil temperature is lower than the set temperature, the motor speed of the oil-gas separator is adjusted to a maximum motor speed.

3. The method according to claim 1, wherein When the engine is not equipped with a crankcase pressure sensor, the method further includes: Real-time acquisition of the engine oil temperature 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, adjusting 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 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.

4. The method according to claim 3, wherein After obtaining the oil temperature value and vehicle mileage of the engine in real time, the method further includes: When the engine oil temperature is lower than the 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: The acquisition unit is used to collect the oil temperature and crankcase pressure values ​​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 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 and crankcase pressure values ​​in real time when the engine is running, the control unit is further used to: When the engine oil temperature is lower than the 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 engine is not equipped with a crankcase pressure sensor, the oil-gas separator control device further comprises: The acquisition unit is used to obtain the oil temperature value and vehicle mileage of the engine in real time when the engine is running; The control unit is configured to adjust the motor speed of the oil-gas separator to a maximum motor speed when the engine oil temperature is not lower than a set temperature and the vehicle mileage is greater than a 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 associated with 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 of the engine in real time, the control unit is used to: When the engine oil temperature is lower than the 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 The method comprises a program code, and when the program code is run on a diesel engine, the program code is used to enable the diesel engine to execute the steps of the method according to any one of claims 1 to 4.

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