Oil-gas separation system and method and storage medium

Abstract

The invention discloses an oil-gas separation system and method and a storage medium. The system comprises an oil-gas detection sensor unit, an oil-gas separation unit, a controller unit, a gas circulation unit and an engine, the oil-gas separation unit is used for carrying out oil-gas separation on mixed gas output by the engine, then outputting first mixed gas and inputting the first mixed gas into the gas circulation unit, the oil-gas detection sensor unit is used for detecting the oil-gas content of the first mixed gas in the gas circulation unit and outputting the oil-gas content to the controller unit, and the controller unit is used for controlling the separation efficiency of the oil-gas separation unit according to the oil-gas content. By means of the system, the controller unit can control the oil-gas separation efficiency of the oil-gas separator unit according to the oil-gas content, and self-adaptive adjustment of the oil-gas separation efficiency according to the oil-gas content is achieved.

Description

Technical Field

[0001] The present application relates to the technical field of oil-gas separation, and in particular to an oil-gas separation system, method and storage medium. Background Art

[0002] When a vehicle is driving, a large amount of oil and gas will be generated. In order to prevent the consumption and leakage of engine oil and pollution to the environment, an oil-gas separator is needed to discharge the oil and gas in the engine crankcase so that the pressure in the crankcase is basically consistent with the atmospheric pressure. At the same time, the engine oil is separated from the oil and gas. In the prior art, the oil-gas separation efficiency of the oil-gas separator cannot be adjusted during the oil-gas separation process, and cannot be adaptively adjusted according to different operating conditions of the engine. Summary of the invention

[0003] Based on this, an oil-gas separation system, method and storage medium are provided to solve the problem in the prior art that the oil-gas separation efficiency of the oil-gas separator cannot be adjusted during the oil-gas separation process and cannot be adaptively adjusted according to different operating conditions of the engine.

[0004] In a first aspect, the present application provides an oil-gas separation system, the system comprising: an oil-gas detection sensor unit, an oil-gas separation unit, a controller unit, a gas circulation unit and an engine;

[0005] The oil-gas separation unit is used to separate the mixed gas output by the engine from oil and gas, output a first mixed gas, and input the first mixed gas into the gas circulation unit;

[0006] The oil and gas detection sensor unit is used to detect the oil and gas content of the first mixed gas in the gas circulation unit, and output the oil and gas content to the controller unit;

[0007] The controller unit is used to control the separation efficiency of the oil-gas separation unit according to the oil-gas content.

[0008] Through the above system, the controller unit determines the separation efficiency of the oil-gas separation unit when performing oil-gas separation, and controls the oil-gas separator to perform oil-gas separation according to the separation efficiency, thereby achieving control of the oil-gas separation efficiency.

[0009] In one embodiment, the system further comprises:

[0010] Determine the oil and gas content range to which the oil and gas content belongs, and determine the target separation efficiency corresponding to the oil and gas content value according to a first mapping relationship between the oil and gas content range and the oil and gas separation efficiency; or

[0011] According to the second mapping relationship between the oil-gas content and the oil-gas separation efficiency, a target separation efficiency corresponding to the oil-gas content value is determined.

[0012] Through the above system, the controller unit directly determines the target separation efficiency according to the first mapping relationship or the second mapping relationship, thereby improving the speed of determining the target separation efficiency.

[0013] In one embodiment, the system further comprises:

[0014] A filter plate with ventilation holes and a baffle plate capable of shielding the ventilation holes;

[0015] The controller unit is used to adjust the relative position relationship between the filter plate and the baffle according to the oil and gas content.

[0016] Through the above system, the oil-gas separation efficiency is adjusted according to the relative position relationship between the filter plate and the baffle, ensuring that the oil-gas separation efficiency can be controlled.

[0017] In one embodiment, the system further comprises:

[0018] The oil and gas detection sensor unit includes: a first oil and gas detection sensor for detecting a first oil and gas content of the first mixed gas in the first gas flow path, and a second oil and gas detection sensor for detecting a second oil and gas content of the second mixed gas in the second gas flow path;

[0019] The controller unit controls the mixed gas to be output to the first gas flow path or the second gas flow path according to an operating state of the engine.

[0020] Through the above system, the engine is in different working states, using different gas flow paths, and ensuring that there is an oil and gas detection sensor on each gas flow path to detect the oil and gas content of the first mixture, which is conducive to determining the accuracy of the oil and gas content.

[0021] In one embodiment, the system further comprises:

[0022] When the controller unit determines that the engine is in a low-load state, the controller unit controls the first oil-gas separator to start the oil-gas separation function, and controls the second oil-gas separator to stop the oil-gas separation function;

[0023] When determining that the engine is in a high load state, the controller unit controls the first oil-gas separator and the second oil-gas separator to start an oil-gas separation function.

[0024] Through the above system, the oil-gas separation function of the oil-gas separation unit is controlled according to different working states of the engine, so that the oil-gas separation efficiency can be adaptively adjusted based on different working states of the engine.

[0025] In one embodiment, the system further comprises:

[0026] When determining that the engine is in a low-load state, the controller unit determines the separation efficiency according to the oil-gas content of the first mixed gas, and controls the first oil-gas separator to perform oil-gas separation according to the separation efficiency.

[0027] Through the above system, when the engine is in a low-load state, it is ensured that the separation efficiency of the first oil-gas separator can be adjusted, thereby ensuring the separation efficiency of the oil-gas separation unit.

[0028] In one embodiment, the system further comprises:

[0029] When determining that the engine is in a high-load state, the controller unit determines the separation efficiency according to the oil-gas content of the first mixed gas, and controls the first oil-gas separator to perform oil-gas separation according to the separation efficiency.

[0030] Through the above system, when the engine is in a high load state, the separation efficiency of the first oil-gas separator is adjusted to ensure the separation efficiency of the oil-gas separation unit.

[0031] In one embodiment, the system further comprises:

[0032] Controlling the first path in the first oil-gas separator or the second oil-gas separator to be closed and the second path to be opened, so as to close the oil-gas separation function; or

[0033] The second path in the first oil-gas separator or the second oil-gas separator is controlled to be closed, and the first path is opened, so as to enable the oil-gas separation function.

[0034] In a second aspect, the present application provides an oil-gas separation method, the method comprising:

[0035] After the mixed gas outputted by the engine is separated into oil and gas by the oil-gas separation unit, a first mixed gas is outputted, and the first mixed gas is inputted into the gas circulation unit;

[0036] determining the oil and gas content of the first mixed gas in the gas circulation unit through an oil and gas detection sensor unit, and outputting the oil and gas content to a controller unit;

[0037] The controller unit controls the separation efficiency of the oil-gas separation unit according to the oil-gas content.

[0038] In a third aspect, the present application provides a computer-readable storage medium having a computer program stored thereon, and when the computer program is executed by a processor, the oil and gas separation method of the second aspect described above is implemented.

[0039] The above-mentioned oil-gas separation system, method and storage medium, the oil-gas separation unit is used to separate the oil and gas of the mixed gas output by the engine, output a first mixed gas, and input the first mixed gas into the gas circulation unit, the oil-gas detection sensor unit is used to detect the oil and gas content of the first mixed gas in the gas circulation unit, and output the oil and gas content to the controller unit, the controller unit is used to control the separation efficiency of the oil-gas separation unit according to the oil and gas content. Through the above-mentioned system, the controller unit can control the oil-gas separation efficiency of the oil-gas separator unit according to the oil and gas content, thereby realizing adaptive adjustment of the oil-gas separation efficiency according to the oil and gas content. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 is a schematic diagram of an oil and gas separation system in one embodiment;

[0041] Figure 2 A schematic diagram of the system architecture of an oil-gas separation system in one embodiment;

[0042] Figure 3 A schematic diagram of the structure of a filter cotton module and a baffle in one embodiment;

[0043] Figure 4 is a schematic diagram of different path openings in the oil-gas separation unit 22 in another embodiment;

[0044] Figure 5 A schematic diagram of a first path and a second path in an oil-gas separation unit 22 in one embodiment;

[0045] Figure 6 A schematic diagram of the structure of an oil-gas separation system in one embodiment;

[0046] Figure 7 A schematic diagram of a flow chart of an oil-gas separation method in one embodiment;

[0047] Figure 8 FIG. 4 is a diagram showing the internal structure of a computer device in one embodiment. DETAILED DESCRIPTION

[0048] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. The specific operating method in the method embodiment can also be applied to the device embodiment or the system embodiment. It should be noted that in the description of the present application, "multiple" is understood as "at least two". "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, and A and B exist, and B exists alone. A is connected to B, which can represent: A is directly connected to B and A is connected to B through C. In addition, in the description of the present application, words such as "first" and "second" are only used to distinguish the purpose of description, and cannot be understood as indicating or implying relative importance, nor can they be understood as indicating or implying order.

[0049] To facilitate understanding, the technical background of the embodiments of the present application is first introduced in detail.

[0050] In the related art, the schematic diagram of the oil-gas separation system is as follows: Figure 1 As shown, a mixture is generated during the operation of the engine body, and the flow path of the mixture is as follows:

[0051] Path 1: Oil separator-PCV valve-low load breathing tube;

[0052] Path 2: Oil-gas separator - high-load breathing pipe - pipeline between air filter and turbocharger;

[0053] Path 3: Pipe between air filter and turbocharger - high-load breathing tube - engine body

[0054] When the engine is in a low-load state, the mixed air generated by the engine flows along path one, and before entering the intake manifold along the low-load breathing pipe, fresh air flows into the engine body along path three;

[0055] When the engine is in a high load state, the mixture generated by the engine flows along path 2.

[0056] In order to facilitate understanding by those skilled in the art, firstly, the components involved in the oil-gas separation system in the embodiment of the present application are explained.

[0057] (1) Oil-gas separator: used to separate gas and oil in the mixed gas;

[0058] (2) Low-load breathing tube / high-load breathing tube: used for circulating gas;

[0059] (3) PCV valve: used to control the pressure of the intake manifold to ensure the pressure in the intake manifold is stable;

[0060] (4) Intake manifold: used to evenly distribute air or a mixture of air and fuel to the intake ducts of each cylinder in the engine;

[0061] (5) Throttle: used to adjust air flow;

[0062] (6) Intercooler: used to reduce the intake air temperature;

[0063] (7) Turbocharger: It uses the inertial force of the exhaust gas discharged by the engine to drive the turbine in the turbine chamber. The turbine then drives the coaxial impeller to compress the air into the cylinder, thereby increasing the engine's air intake;

[0064] (8) Air filter: Filters the air entering the engine to prevent impurities in the air from entering the cylinder.

[0065] In the related art, the above Figure 1 The oil-gas separation efficiency of the oil-gas separator shown cannot be adjusted during the oil-gas separation process, and cannot be adaptively adjusted according to different operating conditions of the engine.

[0066] In view of this, the embodiments of the present application provide an oil-gas separation system, method and storage medium to solve the limitations of the related art that the oil-gas separation efficiency cannot be controlled and cannot be adjusted according to the operating conditions of the engine.

[0067] In one embodiment, Figure 2 Schematic diagram of the system architecture of the oil and gas separation system in the embodiment of the present application. Figure 2 As shown, it includes: an engine 21, an oil-gas separation unit 22, a gas circulation unit 23, an oil-gas detection sensor unit 24 and a controller unit 25.

[0068] The oil-gas separation unit 22 is used to separate the mixed gas output by the engine from oil and gas, output a first mixed gas, and input the first mixed gas into the gas circulation unit 23;

[0069] The oil and gas detection sensor 24 is used to detect the oil and gas content of the first mixed gas in the gas circulation unit 23, and output the oil and gas content to the controller unit;

[0070] The controller unit 25 is used to control the separation efficiency of the oil-gas separation unit 22 according to the oil-gas content.

[0071] Through the above method, the controller unit 25 controls the separation efficiency of the oil-gas separation unit 22 according to the oil-gas content, thereby achieving control of the oil-gas separation efficiency.

[0072] In one embodiment, the controller unit 25 is used to determine the oil and gas content range to which the oil and gas content belongs, and determine the target separation efficiency corresponding to the oil and gas content value based on a first mapping relationship between the oil and gas content range and the oil and gas separation efficiency, or based on a second mapping relationship between the oil and gas content and the oil and gas separation efficiency.

[0073] The first mapping relationship between the oil and gas content range and the oil and gas separation efficiency is shown in Table 1 below:

[0074] Oil and gas content range Oil and gas separation efficiency [0,10％) 0 [10％,20％) 25％ [20％,30％) 50％ [30％,40％) 75％ [40％,50％) 100％

[0075] Table 1

[0076] Different oil and gas content ranges in the above Table 1 correspond to different separation efficiencies. The oil and gas content range and separation efficiency can be adjusted according to actual conditions. The above Table 1 is only used as an example.

[0077] The second mapping relationship between oil and gas content and oil and gas separation efficiency is shown in Table 2 below:

[0078] Oil and gas content Oil and gas separation efficiency 10％ 30％ 11％ 32％ 15％ 38％ 24％ 45％ 76％ 85％

[0079] Table 2

[0080] Different oil and gas contents in the above Table 2 correspond to different oil and gas separation efficiencies. The mapping relationship between the oil and gas contents and the oil and gas separation efficiency can be adjusted according to actual conditions. The above Table 2 is only used as an example.

[0081] In one embodiment, a filter plate with ventilation holes and a baffle plate that can cover the ventilation holes are provided in the oil-gas separation unit 22, and the controller unit 25 is used to adjust the relative position relationship between the filter plate and the baffle plate according to the oil-gas content.

[0082] Optionally, the filter plate may be a filter cotton module with ventilation holes, and a baffle is provided at the outlet of the ventilation holes in the filter cotton module. The structural schematic diagram of the filter cotton module and the baffle is shown in FIG. Figure 3 As shown, in Figure 3 In the invention, a plurality of vent holes of the same size are arranged on the filter cotton module, the filter cotton module is used to absorb the engine oil in the mixed gas, the card slot of the baffle is used to fix the baffle on the filter cotton module, the baffle can move on the filter cotton module according to a preset trajectory, the baffle can move up and down along the card slot, and can also move left and right. When the baffle moves downward, the number of vent holes on the filter cotton module will decrease.

[0083] Based on the structure of the filter plate and the baffle, the separation efficiency can be reflected based on the path opening in the oil-gas separation unit 22. The schematic diagram of different path openings in the oil-gas separation unit 22 is shown in FIG. Figure 4 As shown, Figure 4From left to right in the figure, the baffle moves upward from a path opening of 0% until it moves to a path opening of 100%. The path opening is the number of air vents in the filter cotton module through which the mixed gas passes. The larger the path opening, the more air vents the mixed gas passes through. The larger the path opening, the higher the efficiency of the oil-gas separation unit 22 in oil-gas separation.

[0084] In one embodiment, a first gas flow path and a second gas flow path are provided in the gas flow unit 23, a first oil and gas detection sensor for detecting a first oil and gas content of a first mixer in the first gas flow path, and a second oil and gas detection sensor for detecting a second oil and gas content of a second mixed gas in the second gas flow path are provided in the oil and gas detection sensor unit 24, and the controller unit 25 controls the output of the mixed gas to the first gas flow path or the second gas flow path according to the working state of the engine 21.

[0085] Optionally, when the engine 21 is in a low-load state, the mixed gas output by the engine 21 is output to the oil-gas separation unit 22 for oil-gas separation, and then a first mixed gas is output. The oil-gas separation unit 22 outputs the first mixed gas to the first gas flow path, and the first oil-gas detection sensor performs oil-gas detection on the first mixed gas in the first gas flow path, so that the first mixed gas is input into the engine 21 through the first gas flow path.

[0086] When the engine 21 is in a high load state, the engine 21 inputs the output mixed gas into the oil-gas separation unit 22 for oil-gas separation, and then outputs a second mixed gas. The oil-gas separation unit 22 outputs the second mixed gas to the second gas flow path. The second oil-gas detection sensor performs oil-gas detection on the second mixed gas in the second gas flow path, so that the second mixed gas is input into the engine 21 through the second gas flow path.

[0087] In one embodiment, the oil-gas separation unit 22 is provided with a first oil-gas separator and a second oil-gas separator connected in sequence. When the controller unit 25 determines that the engine is in a low-load state, it controls the first oil-gas separator to turn on the oil-gas separation function, and controls the second oil-gas separator to turn off the oil-gas separation function.

[0088] When determining that the engine is in a high load state, the controller unit 25 controls the first oil-gas separator and the second oil-gas separator to start the oil-gas separation function.

[0089] Optionally, when the controller unit 25 determines that the oil and gas content is lower than the oil and gas content threshold, it determines that the engine is in a low load state, and when the controller unit 25 determines that the oil and gas content is higher than the oil and gas content threshold, it determines that the engine is in a high load state.

[0090] When the controller unit 25 determines that the engine is in a low-load state, the separation efficiency of the oil-gas separation unit 22 is determined according to the oil-gas content of the first mixed gas, and the relative position relationship between the filter plate and the baffle in the oil-gas separation unit 22 is determined according to the separation efficiency, so that the oil-gas separation unit 22 moves the baffle according to the relative position relationship, thereby realizing the control of the oil-gas separation efficiency by the oil-gas separation unit 22.

[0091] When the controller unit 25 determines that the engine is in a high-load state, the separation efficiency is determined according to the oil and gas content of the first mixture, and the relative position relationship between the filter plate and the baffle in the oil and gas separation unit 22 is determined according to the separation efficiency, so that the oil and gas separation unit 22 moves the baffle according to the relative position relationship, thereby realizing the control of the oil and gas separation efficiency by the oil and gas separation unit 22.

[0092] It should be noted that the controller unit is also used to obtain the current separation efficiency of the second oil-gas separator, and control the second oil-gas separator to perform oil-gas separation according to the current separation efficiency, thereby ensuring that the separation efficiency of the second oil-gas separator remains unchanged, that is: the relative position relationship between the filter plate and the baffle in the second oil-gas separator remains unchanged.

[0093] In one embodiment, the schematic diagram of the first path and the second path in the oil-gas separation unit 22 is as follows: Figure 5 It is shown that both the first path and the second path can circulate the mixed gas, but only the first path has the function of filtering the engine oil in the mixed gas. When the controller unit 25 determines to turn on the oil-gas separation function, the controller unit 25 will control the first path in the oil-gas separation unit 22 to open and the second path to close. Since the first path is provided with a filter plate and a baffle structure, the oil-gas separation function can be turned on by opening the first path.

[0094] When the controller unit 25 determines to turn off the oil-gas separation function, the controller unit 25 controls the first path in the oil-gas separation unit 22 to be closed and the second path to be opened, so that the mixed gas output by the engine flows to the gas circulation unit 23 through the second path.

[0095] In one embodiment, the structural diagram of the oil-gas separation system is as follows: Figure 6 As shown, in Figure 6 The oil-gas separation unit 22 includes a first oil-gas separator and a second oil-gas separator, and the gas flow unit 23 includes a first gas flow path and a second gas flow path.

[0096] The first gas flow path may be: a PCV valve, a low-load breathing pipe, an intake manifold and an engine. The first mixed gas may flow to the engine through the oil-gas separation unit 22, the PCV valve, the low-load breathing pipe and the intake manifold in sequence.

[0097] The second gas flow path can be: a high-load breathing pipe, a turbocharger, an intercooler, a throttle, an intake manifold and an engine. The second mixed gas flows to the engine through the high-load breathing pipe, the turbocharger, the intercooler, the throttle, and the intake manifold in sequence.

[0098] The oil and gas detection sensor unit 24 includes a first oil and gas detection sensor and a second oil and gas detection sensor, and the controller unit 25 may be an ECU.

[0099] When the engine is in a low-load state, the engine needs to transfer the mixed gas from the first oil-gas separator and the second oil-gas separator to the low-load breathing pipe. The first oil-gas detection sensor detects the oil-gas content of the mixed gas in the low-load breathing pipe. The first oil-gas detection sensor sends the detected oil-gas content to the ECU. The ECU will turn on the oil-gas separation function of the first oil-gas separator according to the oil-gas content, and turn off the oil-gas separation function of the second oil-gas separator. The first path of the first oil-gas separator is opened and the second path is closed. The first path of the second oil-gas separator is closed and the second path is opened.

[0100] The ECU then determines the separation efficiency of the first oil-gas separator based on the oil-gas content. The first oil-gas separator will determine the relative position relationship between the filter plate and the baffle based on the separation efficiency, thereby realizing the efficiency of the first oil-gas separator in separating the oil and gas of the engine's mixed gas. After the first oil-gas separator separates the oil and gas in the mixed gas, a first mixed gas is obtained, and the first mixed gas is transmitted to the engine from the second oil-gas separator, the PCV valve, the low-load breathing tube, and the intake manifold.

[0101] In one embodiment, when the engine is in a high-load state, the mixed gas needs to be transmitted from the first oil-gas separator and the second oil-gas separator to the high-load breathing pipe, the second oil-gas detection sensor detects the oil-gas content of the mixed gas in the high-load breathing pipe, and determines the oil-gas content of the mixed gas. The second oil-gas detection sensor sends the detected oil-gas content to the ECU, and the ECU activates the oil-gas separation function of the first oil-gas separator and the second oil-gas separator according to the oil-gas content, opens the first path of the first oil-gas separator, closes the second path, and opens the first path of the second oil-gas separator, and closes the second path.

[0102] The ECU then determines the separation efficiency of the first oil-gas separator according to the oil-gas content. The first separator separates the oil and gas on the mixed gas according to the separation efficiency to obtain a first mixed gas, and then transmits the first mixed gas to the second oil-gas separator for oil-gas separation. The ECU will obtain the current separation efficiency of the second oil-gas separator, that is: the ECU controls the relative position relationship of the filter plate and the baffle in the second oil-gas separator to remain unchanged, so that the second oil-gas separator separates the oil and gas on the first mixed gas according to the current separation efficiency. The second oil-gas separator then transmits the first mixed gas after oil-gas separation to the high-load breathing pipe, so that the first mixed gas after oil-gas separation is mixed with the air in the air filter, and then transmitted to the engine from the turbocharger, intercooler, throttle, and intake manifold.

[0103] Based on the above system, when the engine is in a low-load state, the oil and gas content is low, so that the controller unit turns on the first oil-gas separator or the second oil-gas separator, and can adjust the separation efficiency of the oil-gas separator with the separation function turned on. On the premise of ensuring the oil-gas separation efficiency, the cost of oil-gas separation is saved. When the engine is in a high-load state, the oil and gas content is high, so that the controller unit adjusts the separation efficiency of one of the oil-gas separators while turning on the oil-gas separation functions of the first oil-gas separator and the second oil-gas separator, ensuring that the engine can quickly separate the oil and gas under high load conditions, thereby improving the efficiency of oil-gas separation.

[0104] Through the above-mentioned system, the first mixed gas 23 of the gas circulation unit 23 is subjected to oil and gas detection based on the oil and gas detection sensor unit 24, thereby sending the oil and gas content to the controller unit 25, so that the controller unit 25 can control the oil and gas separation efficiency of the oil and gas separator unit 22 according to the oil and gas content, and the controller unit 22 can select different separation efficiencies according to different working modes of the engine, thereby realizing adaptive adjustment of the separation efficiency according to the working mode of the engine.

[0105] Based on the above system, the embodiment of the present application also provides an oil-gas separation method, which determines different separation efficiencies by different target oil-gas content values, thereby realizing the control of the oil-gas separation efficiency. Among them, the method and system described in the embodiment of the present application are based on the same technical concept. Since the principles of the problems solved by the method and the system are similar, the embodiments of the system and the method can refer to each other, and the repeated parts will not be repeated.

[0106] Figure 7 FIG. 1 is a flow chart of an oil-gas separation method in an embodiment. The flow chart can be executed by an oil-gas separation system. The system can be implemented by software, hardware, or a combination of software and hardware. Figure 5 As shown, the process includes the following steps:

[0107] Step S701: After the mixed gas outputted by the engine is separated into oil and gas by the oil-gas separation unit, a first mixed gas is outputted and the first mixed gas is inputted into the gas circulation unit.

[0108] The oil-gas separation unit obtains the mixed gas output by the engine, performs oil-gas separation, obtains the first mixed gas, and then inputs the first mixed gas into the gas circulation unit.

[0109] Step S702: determining the oil and gas content of the first mixed gas in the gas circulation unit through the oil and gas detection sensor unit, and outputting the oil and gas content to the controller unit.

[0110] After the first mixed gas is input into the gas circulation unit, the oil and gas detection sensor unit includes a first oil and gas detection sensor and a second oil and gas detection sensor. The first oil and gas detection sensor is used to detect the oil and gas content of the first mixed gas in the first gas circulation path in the gas circulation unit, and the second oil and gas detection sensor is used to detect the oil and gas content of the second mixed gas in the second gas circulation path in the gas circulation unit.

[0111] When the engine is in a low load state, the first oil and gas detection sensor sends the oil and gas content of the first mixed gas in the first gas flow path to the controller unit.

[0112] When the engine is in a high load state, the second oil and gas detection sensor sends the oil and gas content of the second mixed gas in the second gas flow path to the controller unit.

[0113] Through the above method, the oil and gas detection sensor unit monitors the oil and gas content of the first mixed gas in the gas flow path, so that the controller unit can determine the separation efficiency of the oil and gas separation unit according to the oil and gas content, thereby controlling the oil and gas separation unit to separate the oil and gas in the first mixed gas according to the separation efficiency.

[0114] Step S703: controlling the separation efficiency of the oil-gas separation unit according to the oil-gas content through the controller unit.

[0115] After the controller unit determines the oil and gas content of the first mixed gas, it needs to determine the oil and gas content range to which the oil and gas content belongs, and determine the target separation efficiency corresponding to the oil and gas content value based on a first mapping relationship between the oil and gas content range and the oil and gas separation efficiency, or based on a second mapping relationship between the oil and gas content and the oil and gas separation efficiency.

[0116] The target separation efficiency can also be determined by the relative position relationship between the filter plate and the baffle in the oil and gas separation unit. The target separation efficiency is different, and the relative position relationship between the filter plate and the baffle is different. The embodiment of the present application can also determine the target path opening corresponding to the target separation efficiency through the mapping relationship between the path opening and the separation efficiency. The larger the path opening, the higher the separation efficiency, thereby controlling the movement of the baffle according to the target path opening.

[0117] The mapping relationship between the path opening and the separation efficiency can be shown in Table 3 below:

[0118]

[0119]

[0120] Table 3

[0121] In the above Table 3, the mapping relationship between the path opening and the separation efficiency is only used as an example. The specific parameters in the above Table 3 can be adjusted according to the actual situation, and no further explanation is given here.

[0122] After determining the separation efficiency, the controller unit controls the oil-gas separation unit to perform oil-gas separation on the first mixed gas according to the separation efficiency, and the oil-gas separation unit inputs the first mixed gas after oil-gas separation into the gas circulation unit.

[0123] When the oil-gas separation unit includes a first oil-gas separator and a second oil-gas separator, when the engine is in a low load state, the oil-gas separation function of the first oil-gas separator can be turned on, and the oil-gas separation function of the second oil-gas separator can be turned off; when the engine is in a high load state, the oil-gas separation function of the first oil-gas separator can be turned on, and the oil-gas separation function of the second oil-gas separator can be turned on.

[0124] Both the first oil-gas separator and the second oil-gas separator are provided with a first path and a second path. The first path is used for oil-gas separation, and the second path is only used for circulating gas. The controller unit turns on the oil-gas separation function by opening the first path and closing the second path, and the controller unit turns off the oil-gas separation function by closing the first path and opening the second path.

[0125] When the engine is in a low load state, the controller unit can determine the separation efficiency based on the oil and gas content. Since the method for determining the separation efficiency has been described above, it will not be repeated here. The controller unit controls the first oil and gas separation unit to perform oil and gas separation according to the separation efficiency.

[0126] When the engine is in a high load state, the controller unit can determine the separation efficiency based on the content, and control the first oil-gas separator to perform oil-gas separation according to the separation efficiency. The controller unit is also used to obtain the current separation efficiency of the second oil-gas separator, so that the second oil-gas separator performs oil-gas separation according to the current separation efficiency, thereby ensuring that the separation efficiency of the second oil-gas separator remains unchanged.

[0127] Optionally, when the oil and gas content is lower than the oil and gas content threshold, it is determined that the operating state of the engine is a low-load operating state; when the oil and gas content is higher than the oil and gas content threshold, it is determined that the operating state of the engine is a high-load operating state.

[0128] Through the method described above, the separation efficiency corresponding to the oil and gas content is determined according to the first mapping relationship or the second mapping relationship, so that the oil and gas separation unit can achieve different oil and gas separation efficiencies according to different oil and gas contents, and can determine different separation efficiencies according to different working conditions of the engine, thereby realizing the control of the oil and gas separation efficiency.

[0129] It should be understood that although Figure 8 The steps in the flowchart are shown in sequence as indicated by the arrows, but these steps are not necessarily executed in the order indicated by the arrows. Unless otherwise specified in this document, there is no strict order restriction for the execution of these steps, and these steps can be executed in other orders. Moreover, Figure 8 At least part of the steps may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily executed at the same time, but can be executed at different times. The execution order of these sub-steps or stages is not necessarily sequential, but can be executed in turn or alternately with other steps or at least part of the sub-steps or stages of other steps.

[0130] In one embodiment, a computer device is provided. The computer device may be a server, and its internal structure diagram may be as follows: Figure 8 As shown. The computer device includes a processor, a memory, a network interface and a database connected through a system bus. Among them, the processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program and a database. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The database of the computer device is used to store oil and gas separation data. The network interface of the computer device is used to communicate with an external terminal through a network connection. When the computer program is executed by the processor, an oil and gas separation method is implemented.

[0131] Those skilled in the art will understand that Figure 8The structure shown in the figure is only a block diagram of a part of the structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than those shown in the figure, or combine certain components, or have a different arrangement of components.

[0132] In one embodiment, a computer readable storage medium is provided, on which a computer program is stored, and when the computer program is executed by a processor, the following steps are implemented:

[0133] The oil-gas separation unit is used to separate the mixed gas output by the engine from oil and gas, output a first mixed gas, and input the first mixed gas into the gas circulation unit;

[0134] The oil and gas detection sensor unit is used to detect the oil and gas content of the first mixed gas in the gas circulation unit, and output the oil and gas content to the controller unit;

[0135] The controller unit is used to control the separation efficiency of the oil-gas separation unit according to the oil-gas content.

[0136] In one embodiment, when the computer program is executed by a processor, the following steps are also implemented:

[0137] Determine the oil and gas content range to which the oil and gas content belongs, and determine the target separation efficiency corresponding to the oil and gas content value according to a first mapping relationship between the oil and gas content range and the oil and gas separation efficiency; or

[0138] According to the second mapping relationship between the oil-gas content and the oil-gas separation efficiency, a target separation efficiency corresponding to the oil-gas content value is determined.

[0139] In one embodiment, when the computer program is executed by a processor, the following steps are also implemented:

[0140] A filter plate with ventilation holes and a baffle plate capable of shielding the ventilation holes;

[0141] The controller unit is used to adjust the relative position relationship between the filter plate and the baffle according to the oil and gas content.

[0142] In one embodiment, when the computer program is executed by a processor, the following steps are also implemented:

[0143] The oil and gas detection sensor unit includes: a first oil and gas detection sensor for detecting a first oil and gas content of the first mixed gas in the first gas flow path, and a second oil and gas detection sensor for detecting a second oil and gas content of the second mixed gas in the second gas flow path;

[0144] The controller unit controls the mixed gas to be output to the first gas flow path or the second gas flow path according to an operating state of the engine.

[0145] In one embodiment, when the computer program is executed by a processor, the following steps are also implemented:

[0146] When the controller unit determines that the engine is in a low-load state, the controller unit controls the first oil-gas separator to start the oil-gas separation function, and controls the second oil-gas separator to stop the oil-gas separation function;

[0147] When determining that the engine is in a high load state, the controller unit controls the first oil-gas separator and the second oil-gas separator to start an oil-gas separation function.

[0148] In one embodiment, when the computer program is executed by a processor, the following steps are also implemented:

[0149] When determining that the engine is in a low-load state, the controller unit determines the separation efficiency according to the oil-gas content of the first mixed gas, and controls the first oil-gas separator to perform oil-gas separation according to the separation efficiency.

[0150] In one embodiment, when the computer program is executed by a processor, the following steps are also implemented:

[0151] When determining that the engine is in a high-load state, the controller unit determines the separation efficiency according to the oil-gas content of the first mixed gas, and controls the first oil-gas separator to perform oil-gas separation according to the separation efficiency.

[0152] In one embodiment, when the computer program is executed by a processor, the following steps are also implemented:

[0153] Controlling the first path in the first oil-gas separator or the second oil-gas separator to be closed and the second path to be opened, so as to close the oil-gas separation function; or

[0154] The second path in the first oil-gas separator or the second oil-gas separator is controlled to be closed, and the first path is opened, so as to enable the oil-gas separation function.

[0155] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, storage, database or other media used in the embodiments provided in this application can include non-volatile and / or volatile memory. Non-volatile memory can include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM) or flash memory. Volatile memory can include random access memory (RAM) or external cache memory. As an illustration and not limitation, RAM is available in many forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).

[0156] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0157] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

Claims

1. An oil-gas separation system, characterized in that: The oil-gas separation system comprises: an oil-gas detection sensor unit, an oil-gas separation unit, a controller unit, a gas circulation unit and an engine; The oil-gas separation unit is used to separate the mixed gas output by the engine from oil and gas, output a first mixed gas, and input the first mixed gas into the gas circulation unit; The oil and gas detection sensor unit is used to detect the oil and gas content of the first mixed gas in the gas circulation unit, and output the oil and gas content to the controller unit; The controller unit is used to control the separation efficiency of the oil-gas separation unit according to the oil-gas content.

2. The system according to claim 1, characterized in that The controller unit is used to: Determine the oil and gas content range to which the oil and gas content belongs, and determine the target separation efficiency corresponding to the oil and gas content value according to a first mapping relationship between the oil and gas content range and the oil and gas separation efficiency; or According to the second mapping relationship between the oil-gas content and the oil-gas separation efficiency, a target separation efficiency corresponding to the oil-gas content value is determined.

3. The system according to claim 1, characterized in that The oil-gas separation unit comprises: A filter plate with ventilation holes and a baffle plate capable of shielding the ventilation holes; The controller unit is used to adjust the relative position relationship between the filter plate and the baffle according to the oil and gas content.

4. The system according to claim 1, characterized in that The gas flow unit includes: a first gas flow path and a second gas flow path; The oil and gas detection sensor unit includes: a first oil and gas detection sensor for detecting a first oil and gas content of the first mixed gas in the first gas flow path, and a second oil and gas detection sensor for detecting a second oil and gas content of the second mixed gas in the second gas flow path; The controller unit controls the mixed gas to be output to the first gas flow path or the second gas flow path according to an operating state of the engine.

5. The system according to claim 1, characterized in that The oil-gas separation unit comprises: a first oil-gas separator and a second oil-gas separator connected in sequence; When the controller unit determines that the engine is in a low-load state, the controller unit controls the first oil-gas separator to start the oil-gas separation function, and controls the second oil-gas separator to stop the oil-gas separation function; When determining that the engine is in a high load state, the controller unit controls the first oil-gas separator and the second oil-gas separator to start an oil-gas separation function.

6. The system according to claim 5, characterized in that The oil-gas separation unit comprises: When determining that the engine is in a low-load state, the controller unit determines the separation efficiency according to the oil-gas content of the first mixed gas, and controls the first oil-gas separator to perform oil-gas separation according to the separation efficiency.

7. The system according to claim 5, characterized in that The oil-gas separation unit comprises: When determining that the engine is in a high-load state, the controller unit determines the separation efficiency according to the oil-gas content of the first mixed gas, and controls the first oil-gas separator to perform oil-gas separation according to the separation efficiency.

8. The system according to any one of claims 5 to 7, characterized in that: The controller unit is used to: Controlling the first path in the first oil-gas separator or the second oil-gas separator to be closed and the second path to be opened, so as to close the oil-gas separation function; or The second path in the first oil-gas separator or the second oil-gas separator is controlled to be closed, and the first path is opened, so as to enable the oil-gas separation function.

9. An oil-gas separation method, characterized in that: include: After the mixed gas outputted by the engine is separated into oil and gas by the oil-gas separation unit, a first mixed gas is outputted, and the first mixed gas is inputted into the gas circulation unit; determining the oil and gas content of the first mixed gas in the gas circulation unit through an oil and gas detection sensor unit, and outputting the oil and gas content to a controller unit; The controller unit controls the separation efficiency of the oil-gas separation unit according to the oil-gas content.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the method according to claim 9 is implemented.

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