Treatment device, method, system and equipment for engine blow-by gas and storage medium

Abstract

The invention provides an engine blow-by treatment device, method, system and equipment and a storage medium. The device comprises an oil-gas separation module, a first blow-by gas recovery passage, a second blow-by gas recovery passage, a control module and a third blow-by gas recovery passage. And the first blow-by gas recovery passage, the second blow-by gas recovery passage and the third blow-by gas recovery passage can convey the target blow-by gas subjected to oil-gas separation to the engine. By introducing a third blow-by gas recovery passage, blow-by gas recovery is controlled according to the air pressure of the crankcase; when blow-by gas in the crankcase cannot be discharged from the intake manifold and the turbocharger, namely, the first blow-by gas recovery passage and the second blow-by gas recovery passage cannot normally recover the blow-by gas, the blow-by gas is guided into the engine through the third blow-by gas recovery passage to participate in combustion again, and air pollution caused by the fact that the blow-by gas is directly discharged into the atmosphere is avoided.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to a device, method, system, equipment and storage medium for processing engine blowby. Background Art

[0002] Normally, the engine's work includes four strokes: intake, compression, expansion, and exhaust. During the compression and expansion strokes, the pressure of the mixture in the cylinder is very high. The compressed gas will leak into the crankcase through the gap between the piston and the cylinder liner, the piston ring opening, and the gap between the piston ring and the cylinder liner, and form blowby with the engine oil.

[0003] Blow-by gas will dilute the engine oil, accelerate the aging and deterioration of the engine oil, and increase the oil consumption; at the same time, the water vapor in the blow-by gas condenses in the engine oil, forming sludge and blocking the oil circuit; the acidic gas in the blow-by gas mixes into the lubrication system, causing corrosion and accelerated wear of engine parts. To solve the above problems, the usual practice is to set up an engine crankcase ventilation system to introduce the blow-by gas in the crankcase into the combustion chamber for re-combustion.

[0004] In the prior art, when the throttle opening is small, the negative pressure of the intake manifold is usually used to introduce the blowby gas in the crankcase through the oil-gas separator and then into the intake manifold, and then to the engine to participate in combustion; when the throttle opening is large or fully open, the negative pressure generated by the turbocharger is usually used to introduce the blowby gas in the crankcase through the oil-gas separator and then into the turbocharger, and then to the engine to participate in combustion.

[0005] However, when the throttle opening is in the middle position, it is easy for the blowby gas in the crankcase to be unable to be discharged from the intake manifold and the turbocharger, which in turn causes the positive pressure in the crankcase to be directly discharged into the atmosphere through other channels, thereby causing air pollution.

[0006] It should be pointed out that the information disclosed in the background technology section of this application is only intended to deepen the understanding of the general background technology of this application, and should not be regarded as an admission or suggestion in any form that the information constitutes prior art already known to those skilled in the art. Summary of the invention

[0007] In view of this, the present application provides an engine blowby processing device, method, system, equipment and storage medium, so as to solve the problem in the prior art that when the throttle opening is in the middle position, the blowby gas in the crankcase cannot be discharged from the intake manifold and the turbocharger, thereby causing the positive pressure in the crankcase to be directly discharged into the atmosphere through other channels, thereby causing air pollution.

[0008] In a first aspect, an embodiment of the present application provides a device for processing engine blowby, which is applied to an engine system, wherein the engine system includes a turbocharger, a throttle, an intake manifold, and a crankcase, wherein the turbocharger is used to compress air to increase the intake amount, the throttle is used to control the conductance between the outlet end of the turbocharger and the intake end of the intake manifold, and the intake manifold is used to supply intake air to each cylinder of the engine, and the device includes:

[0009] An oil-gas separation module, used for performing oil-gas separation processing on the blow-by gas in the crankcase, and outputting the target blow-by gas at the gas outlet of the oil-gas separation module;

[0010] a first blow-by gas recovery passage, wherein an air inlet of the first blow-by gas recovery passage is communicated with an air outlet of the oil-gas separation module, and an air outlet of the first blow-by gas recovery passage is communicated with an air inlet of the intake manifold, and the first blow-by gas recovery passage is used to transport the target blow-by gas after oil-gas separation to the intake manifold according to a pressure difference between the air outlet of the oil-gas separation module and the air inlet of the intake manifold;

[0011] a second blow-by gas recovery passage, an air inlet of the second blow-by gas recovery passage being communicated with an air outlet of the oil-gas separation module, an air outlet of the second blow-by gas recovery passage being communicated with an air inlet of the turbocharger, the second blow-by gas recovery passage being used to deliver the target blow-by gas after oil-gas separation to the intake manifold according to a pressure difference between the air outlet of the oil-gas separation module and the air inlet of the turbocharger;

[0012] A control module, used for obtaining the gas pressure of the crankcase;

[0013] A third blow-by gas recovery passage, an air inlet of the third blow-by gas recovery passage is connected to an air outlet of the oil-gas separation module, an air outlet of the third blow-by gas recovery passage is connected to an air inlet of the throttle valve, and the third blow-by gas recovery passage is used to control the opening of the third blow-by gas recovery passage according to the air pressure of the crankcase.

[0014] It should be pointed out that when the throttle opening is small, the negative pressure of the intake manifold is usually used to introduce the blowby gas in the crankcase through the oil-gas separator and then into the intake manifold, and then conduct it to the engine to participate in combustion. At this time, the first blowby gas recovery passage is working; when the throttle opening is large or fully open, the negative pressure generated by the turbocharger is usually used to introduce the blowby gas in the crankcase through the oil-gas separator and then into the turbocharger, and then conduct it to the engine to participate in combustion. At this time, the second blowby gas recovery passage is working.

[0015] In the embodiment of the present application, the first blow-by gas recovery passage, the second blow-by gas recovery passage, and the third blow-by gas recovery passage can all deliver the target blow-by gas after oil and gas separation to the engine. By introducing the third blow-by gas recovery passage, the blow-by gas recovery is controlled according to the air pressure of the crankcase. When the blow-by gas in the crankcase cannot be discharged from the intake manifold and the turbocharger, that is, when the first blow-by gas recovery passage and the second blow-by gas recovery passage cannot normally recover the blow-by gas, the blow-by gas is introduced into the engine through the third blow-by gas recovery passage to participate in combustion again, thereby avoiding the blow-by gas being directly discharged into the atmosphere and causing air pollution.

[0016] In a possible implementation, the opening degree of the third blow-by gas recovery passage is proportional to the gas pressure of the crankcase.

[0017] In the embodiment of the present application, the opening degree of the third blow-by gas recovery passage is proportional to the gas pressure of the crankcase, which improves the recovery rate of the blow-by gas and thereby avoids the blow-by gas being directly discharged into the atmosphere and causing air pollution.

[0018] In a possible implementation, the third blowby gas recovery passage specifically includes:

[0019] A pressure regulating valve, wherein the air inlet of the pressure regulating valve is connected to the air outlet of the oil-gas separation module through a high-load breathing pipe, the air outlet of the pressure regulating valve is connected to the air inlet of the throttle valve, and the pressure regulating valve is used to control the opening of the third blowby gas recovery passage.

[0020] In the embodiment of the present application, the third blow-by gas recovery passage includes a pressure regulating valve, thereby realizing control over the opening of the third blow-by gas recovery passage. To a certain extent, the recovery rate of the blow-by gas is improved, thereby avoiding direct discharge of the blow-by gas into the atmosphere and causing air pollution. At the same time, the intelligence level of the device is improved.

[0021] In a possible implementation, the third blowby gas recovery passage further includes:

[0022] A venturi tube, wherein the air inlet of the venturi tube is connected to the air outlet of the pressure regulating valve, the air outlet of the venturi tube is connected to the air inlet of the throttle valve, and the venturi tube is used to adjust the flow rate of the target blowby gas.

[0023] In the embodiment of the present application, the third blow-by gas recovery passage further includes a venturi tube, wherein the air inlet of the venturi tube is connected to the air outlet of the pressure regulating valve, and the air outlet of the venturi tube is connected to the air inlet of the throttle valve. The venturi tube can be used to adjust the target blow-by gas flow rate, and to a certain extent, avoid the blow-by gas being directly discharged into the atmosphere to cause air pollution.

[0024] In a possible implementation, the first blowby gas recovery path specifically includes:

[0025] A PCV valve, wherein the air inlet of the PCV valve is connected to the air outlet of the oil-gas separation module, and the air outlet of the PCV valve is connected to the air inlet of the intake manifold through a low-load breathing tube. The PCV valve is used to transport the target blowby gas after oil-gas separation to the intake manifold when the air pressure at the air outlet of the oil-gas separation module is greater than the air pressure at the air inlet of the intake manifold.

[0026] In the embodiment of the present application, the first blow-by gas recovery passage transports the target blow-by gas after oil and gas separation to the intake manifold through the PCV valve, which can avoid the backflow of gas to a certain extent, so that the target blow-by gas can only flow in one direction based on the air pressure between the outlet of the oil and gas separation module and the inlet of the intake manifold, which avoids the backflow of the target blow-by gas to a certain extent, thereby causing the target blow-by gas to be discharged into the atmosphere and cause air pollution.

[0027] In a second aspect, an embodiment of the present application provides a method for treating blowby gas in an engine, wherein the engine includes a crankcase, and the method includes:

[0028] obtaining the air pressure of the crankcase;

[0029] Determining whether the air pressure of the crankcase is greater than a preset air pressure;

[0030] When the crankcase air pressure is greater than the preset air pressure, the third blow-by gas recovery passage is controlled to be opened, and the third blow-by gas recovery passage is used to transmit the target blow-by gas to the air intake of the engine.

[0031] In the embodiment of the present application, the crankcase air pressure is first obtained; then, it is determined whether the crankcase air pressure is greater than the preset air pressure; when the crankcase air pressure is greater than the preset air pressure, the third blowby gas recovery passage is controlled to be opened. It can be understood that when the blowby gas in the crankcase cannot be discharged from the intake manifold and the turbocharger, that is, when the first blowby gas recovery passage and the second blowby gas recovery passage cannot normally recover the blowby gas, the blowby gas is introduced into the engine through the third blowby gas recovery passage to participate in combustion again, thereby avoiding the blowby gas being directly discharged into the atmosphere and causing air pollution.

[0032] In a possible implementation, the opening degree of the third blow-by gas recovery passage is proportional to the gas pressure of the crankcase.

[0033] In the embodiment of the present application, the opening degree of the third blow-by gas recovery passage is proportional to the gas pressure of the crankcase, which improves the recovery rate of the blow-by gas and thereby avoids the blow-by gas being directly discharged into the atmosphere and causing air pollution.

[0034] In a third aspect, an embodiment of the present application provides a system for treating engine blowby, comprising:

[0035] An engine system and any one of the engine blowby treatment devices described in the first aspect.

[0036] In a fourth aspect, an embodiment of the present application provides an electronic device, including:

[0037] processor;

[0038] Memory;

[0039] And a computer program, wherein the computer program is stored in the memory, and the computer program includes instructions, and when the instructions are executed by the processor, the electronic device executes any one of the methods described in the second aspect.

[0040] In a fifth aspect, an embodiment of the present application provides a computer-readable storage medium, wherein the computer-readable storage medium includes a stored program, wherein when the program is running, the device where the computer-readable storage medium is located is controlled to execute any one of the methods described in the second aspect.

[0041] It can be understood that the engine blowby treatment system provided in the third aspect, the electronic device provided in the fourth aspect, and the computer-readable storage medium provided in the fifth aspect are all used to execute the method provided in the present application. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects in the corresponding methods and devices, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0043] Figure 1 A schematic diagram of an application scenario provided for an embodiment of the present application.

[0044] Figure 2 A structural schematic diagram of an engine blowby gas treatment device provided in the related art.

[0045] Figure 3 A schematic diagram of the structure of an engine blowby treatment device provided in an embodiment of the present application.

[0046] Figure 4 A schematic diagram of the structure of another engine blowby treatment device provided in an embodiment of the present application.

[0047] Figure 5 A schematic diagram of the structure of another engine blowby treatment device provided in an embodiment of the present application.

[0048] Figure 6 A schematic diagram of the structure of another engine blowby treatment device provided in an embodiment of the present application.

[0049] Figure 7 A flow chart of a method for treating engine blowby is provided for an embodiment of the present application.

[0050] Figure 8 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0051] In order to better understand the technical solution of the present application, the embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0052] It should be clear that the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0053] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application. The singular forms "a", "said" and "the" used in the embodiments of the present application and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings.

[0054] It should be understood that the term "and / or" used in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0055] To facilitate understanding, a specific application scenario is first exemplified below.

[0056] See also Figure 1 , is a schematic diagram of an application scenario provided by an embodiment of the present application. Figure 1 As shown, a vehicle is shown in the application scenario, and the vehicle includes: an engine, a turbocharger, a throttle valve, and an intake manifold. The turbocharger is used to compress air to increase the intake volume; the throttle valve is used to control the conductance between the outlet end of the turbocharger and the intake end of the intake manifold; and the intake manifold is used to supply intake air to each cylinder of the engine.

[0057] It should be pointed out that Figure 1This is only an exemplary description of the application scenarios involved in the embodiments of the present application, and should not be used as a limitation on the scope of protection of the present application. For example, the vehicles involved in the above application scenarios may be passenger cars, buses, trucks, etc., and the embodiments of the present application do not specifically limit the types of vehicles. In addition, it is understood that in addition to Figure 1 In addition to the engine, turbocharger, throttle and intake manifold involved, there are other functional units or modules, which will not be described in detail in the embodiments of the present application.

[0058] In actual applications, the engine work includes four strokes: intake, compression, expansion, and exhaust. During the compression and expansion strokes, the pressure of the mixture in the cylinder is very high. The compressed gas will leak into the crankcase through the gap between the piston and the cylinder liner, the piston ring opening, the gap between the piston ring and the cylinder liner, etc., and form blowby with the engine oil.

[0059] Blow-by gas will dilute the engine oil, accelerate the aging and deterioration of the engine oil, and increase the oil consumption; at the same time, the water vapor in the blow-by gas condenses in the engine oil, forming sludge and blocking the oil circuit; the acidic gas in the blow-by gas mixes into the lubrication system, causing corrosion and accelerated wear of engine parts. To solve the above problems, the usual practice is to set up an engine crankcase ventilation system to introduce the blow-by gas in the crankcase into the combustion chamber for re-combustion.

[0060] In the prior art, when the throttle opening is small, the negative pressure of the intake manifold is usually used to introduce the blowby gas in the crankcase through the oil-gas separator and then into the intake manifold, and then to the engine to participate in combustion; when the throttle opening is large or fully open, the negative pressure generated by the turbocharger is usually used to introduce the blowby gas in the crankcase through the oil-gas separator and then into the turbocharger, and then to the engine to participate in combustion.

[0061] For easier understanding, see Figure 2 , a structural schematic diagram of an engine blowby gas processing device provided by the related technology. As shown in the figure, a vehicle is shown in the figure, and the vehicle includes: an engine, a turbocharger, a throttle, an intake manifold, a crankcase, an oil-gas separator, a first blowby gas recovery path, and a second blowby gas recovery path. It can be understood that when the engine is started, the outside air enters the engine through the air filter, the turbocharger, the intercooler, the throttle and the intake manifold. After the engine is working, blowby gas may be generated in the crankcase. Then, the oil-gas separation module separates the blowby gas generated in the crankcase from oil and gas. Finally, through the first blowby gas recovery path or the second blowby gas recovery path, the target blowby gas is conducted to the engine to participate in combustion.

[0062] When the engine load is low, the throttle opening is low, and there is a large pressure difference at both ends of the first blowby gas recovery passage, so the target blowby gas is conducted to the engine through the first recovery passage to participate in combustion; as the engine load continues to increase, the turbocharger intervenes and the throttle opening increases. At this time, due to the suction force of the turbocharger, the target blowby gas is conducted to the engine through the second blowby gas recovery passage to participate in combustion.

[0063] However, when the throttle opening is continuously increased, the turbocharger intervenes in the working condition with low suction force. At this time, there may be no positive pressure difference between the two ends of the first blowby gas recovery passage, and the suction force of the turbocharger is not enough to allow the target blowby gas to pass through the second blowby gas recovery passage to the engine. It can be understood that there is a situation where the blowby gas in the crankcase cannot be discharged from the intake manifold and the turbocharger. At this time, the positive pressure in the crankcase may be directly discharged into the atmosphere through other channels, thereby causing air pollution.

[0064] In view of the above problems, in the embodiment of the present application, the first blow-by gas recovery passage, the second blow-by gas recovery passage, and the third blow-by gas recovery passage can all deliver the target blow-by gas after oil and gas separation to the engine. It can be understood that by introducing the third blow-by gas recovery passage to control the recovery of blow-by gas according to the air pressure of the crankcase, when the blow-by gas in the crankcase cannot be discharged from the intake manifold and the turbocharger, that is, when the first blow-by gas recovery passage and the second blow-by gas recovery passage cannot normally recover the blow-by gas, the blow-by gas is introduced into the engine through the third blow-by gas recovery passage to participate in combustion again, thereby avoiding the blow-by gas from being directly discharged into the atmosphere and causing air pollution. Specifically, a detailed description is given below in conjunction with the accompanying drawings and specific embodiments.

[0065] See also Figure 3 , is a schematic diagram of the structure of an engine blowby treatment device provided in an embodiment of the present application. Figure 2 The invention also includes: a control module and a third blowby gas recovery passage. The control module is used to obtain the gas pressure of the crankcase; the third blowby gas recovery passage is used to control the opening of the third blowby gas recovery passage according to the gas pressure of the crankcase.

[0066] like Figure 3The connection relationship of the various components shown is as follows: an air inlet of a first blow-by gas recovery passage is connected to an air outlet of an oil-gas separation module, and an air outlet of the first blow-by gas recovery passage is connected to an air inlet of an intake manifold, and the first blow-by gas recovery passage is used to deliver target blow-by gas after oil and gas separation to the intake manifold according to a pressure difference between the air outlet of the oil-gas separation module and the air inlet of the intake manifold; an air inlet of a second blow-by gas recovery passage is connected to an air outlet of the oil-gas separation module, and an air outlet of the second blow-by gas recovery passage is connected to an air inlet of a turbocharger, and the second blow-by gas recovery passage is used to deliver the target blow-by gas after oil and gas separation to the intake manifold according to a pressure difference between the air outlet of the oil-gas separation module and the air inlet of the turbocharger; an air inlet of a third blow-by gas recovery passage is connected to an air outlet of the oil-gas separation module, and an air outlet of the third blow-by gas recovery passage is connected to an air inlet of a throttle valve, and the third blow-by gas recovery passage is used to control the opening of the third blow-by gas recovery passage according to the air pressure of a crankcase.

[0067] In the embodiment of the present application, a third blow-by gas recovery passage is introduced to control the recovery of blow-by gas according to the air pressure of the crankcase. When the blow-by gas in the crankcase cannot be discharged from the intake manifold and the turbocharger, that is, when the first blow-by gas recovery passage and the second blow-by gas recovery passage are unable to recover the blow-by gas normally, the blow-by gas is introduced into the engine through the third blow-by gas recovery passage to participate in combustion again, thereby avoiding the blow-by gas being directly discharged into the atmosphere and causing air pollution.

[0068] In a possible implementation, the opening degree of the third blowby gas recovery passage is proportional to the crankcase air pressure. It is understandable that when the crankcase air pressure is higher, the opening degree of the third blowby gas recovery passage is greater; when the crankcase air pressure is lower, the opening degree of the third blowby gas recovery passage is smaller.

[0069] In the embodiment of the present application, by setting the opening of the third blow-by gas recovery passage to be proportional to the crankcase air pressure, the blow-by gas recovery rate is improved, thereby preventing the blow-by gas from being directly discharged into the atmosphere and causing air pollution.

[0070] In a possible implementation, the third blowby gas recovery passage specifically includes: a pressure regulating valve. For ease of understanding, see Figure 4 , is a schematic diagram of the structure of another engine blowby treatment device provided in an embodiment of the present application. Figure 3 On the basis of the third blowby gas recovery passage, the third blowby gas recovery passage specifically includes a pressure regulating valve; the air inlet of the pressure regulating valve is connected to the air outlet of the oil-gas separation module through a high-load breathing pipe, and the air outlet of the pressure regulating valve is connected to the air inlet of the throttle valve. The pressure regulating valve is used to control the opening of the third blowby gas recovery passage.

[0071] In the embodiment of the present application, the third blow-by gas recovery passage includes a pressure regulating valve, thereby realizing control over the opening of the third blow-by gas recovery passage. To a certain extent, the recovery rate of the blow-by gas is improved, thereby avoiding direct discharge of the blow-by gas into the atmosphere and causing air pollution. At the same time, the intelligence level of the device is improved.

[0072] In a possible implementation, the third blowby gas recovery passage further includes a venturi tube. Figure 5 , is a schematic diagram of the structure of another engine blowby treatment device provided in an embodiment of the present application. Figure 4 On the basis of the third blow-by gas recovery passage, the third blow-by gas recovery passage further includes a venturi tube. The air inlet of the venturi tube is connected to the air outlet of the pressure regulating valve, and the air outlet of the venturi tube is connected to the air inlet of the throttle valve. The venturi tube is used to adjust the flow rate of the target blow-by gas.

[0073] In the embodiment of the present application, the third blow-by gas recovery passage further includes a venturi tube, wherein the air inlet of the venturi tube is connected to the air outlet of the pressure regulating valve, and the air outlet of the venturi tube is connected to the air inlet of the throttle valve. The venturi tube can be used to adjust the target blow-by gas flow rate, and to a certain extent, avoid the blow-by gas being directly discharged into the atmosphere to cause air pollution.

[0074] In a possible implementation, the first blowby gas recovery passage specifically includes: a crankcase (Positive Crankcase Ventilation, PCV) valve, for ease of understanding, see Figure 6 , is a schematic diagram of the structure of another engine blowby treatment device provided in an embodiment of the present application. Figure 5 On the basis of the invention, the third blow-by gas recovery passage further includes a PCV valve. The air inlet of the PCV valve is connected to the air outlet of the oil-gas separation module, and the air outlet of the PCV valve is connected to the air inlet of the intake manifold through a low-load breathing pipe. The PCV valve is used to transport the target blow-by gas after oil-gas separation to the intake manifold when the air pressure at the air outlet of the oil-gas separation module is greater than the air pressure at the air inlet of the intake manifold.

[0075] In the embodiment of the present application, the first blow-by gas recovery passage transports the target blow-by gas after oil and gas separation to the intake manifold through the PCV valve, which can avoid the backflow of gas to a certain extent, so that the target blow-by gas can only flow in one direction based on the air pressure between the outlet of the oil and gas separation module and the inlet of the intake manifold, which avoids the backflow of the target blow-by gas to a certain extent, thereby causing the target blow-by gas to be discharged into the atmosphere and cause air pollution.

[0076] Corresponding to the above embodiment, the present application also provides a method for treating engine blowby. Figure 7, a flow chart of a method for treating blowby of an engine is provided in an embodiment of the present application. As shown in the figure, the method specifically includes the following steps.

[0077] Step S701: Acquire the crankcase air pressure.

[0078] It can be understood that in the embodiment of the present application, the air pressure of the crankcase is first obtained using a pressure sensor.

[0079] Step S702: Determine whether the crankcase pressure is greater than a preset pressure.

[0080] In the embodiment of the present application, the control module determines whether the crankcase air pressure is greater than the preset air pressure. When the crankcase air pressure is greater than the preset air pressure, step S703 is executed.

[0081] Step S703: When the crankcase pressure is greater than the preset pressure, the third blowby gas recovery passage is controlled to be opened.

[0082] In the embodiment of the present application, when the crankcase pressure is greater than a preset pressure, the third blowby gas recovery passage is controlled to be opened, wherein the third blowby gas recovery passage is used to transmit the target blowby gas to the air intake of the engine.

[0083] In one possible implementation, the opening of the third blowby gas recovery passage is proportional to the crankcase air pressure. In the embodiment of the present application, the opening of the third blowby gas recovery passage is proportional to the crankcase air pressure, which improves the recovery rate of the blowby gas, thereby avoiding the blowby gas from being directly discharged into the atmosphere and causing air pollution.

[0084] In the embodiment of the present application, the crankcase air pressure is first obtained; then, it is determined whether the crankcase air pressure is greater than the preset air pressure; when the crankcase air pressure is greater than the preset air pressure, the third blowby gas recovery passage is controlled to be opened. It can be understood that when the blowby gas in the crankcase cannot be discharged from the intake manifold and the turbocharger, that is, when the first blowby gas recovery passage and the second blowby gas recovery passage cannot normally recover the blowby gas, the blowby gas is introduced into the engine through the third blowby gas recovery passage to participate in combustion again, thereby avoiding the blowby gas being directly discharged into the atmosphere and causing air pollution.

[0085] Corresponding to the above embodiment, the present application also provides a system for processing engine blowby, which specifically includes an engine system and the above-mentioned engine blowby processing device.

[0086] The specific contents involved in the embodiments of the present application can be found in the description of the above embodiments. For the sake of brevity, they will not be repeated here.

[0087] Corresponding to the above embodiment, the present application also provides an electronic device. Figure 8, is a schematic diagram of the structure of an electronic device provided in an embodiment of the present application. The electronic device 800 may include: a processor 801, a memory 802, and a communication unit 803. These components communicate through one or more buses. Those skilled in the art will understand that the structure of the electronic device shown in the figure does not constitute a limitation on the embodiment of the present invention. It can be a bus structure or a star structure, and may include more or fewer components than shown in the figure, or combine certain components, or arrange the components differently.

[0088] The communication unit 803 is used to establish a communication channel so that the electronic device can communicate with other devices, receive user data sent by other devices or send user data to other devices.

[0089] The processor 801 is the control center of the electronic device. It uses various interfaces and lines to connect various parts of the entire electronic device. It runs or executes software programs, instructions, and / or modules stored in the memory 802, and calls data stored in the memory to perform various functions of the electronic device and / or process data. The processor can be composed of an integrated circuit (IC), for example, it can be composed of a single packaged IC, or it can be composed of a plurality of packaged ICs with the same or different functions. For example, the processor 801 can include only a central processing unit (CPU). In the embodiment of the present invention, the CPU can be a single computing core or multiple computing cores.

[0090] The memory 802 is used to store the execution instructions of the processor 801. The memory 802 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk or optical disk.

[0091] When the execution instruction in the memory 802 is executed by the processor 801, the electronic device 800 can execute Figure 1 Some or all of the steps in the illustrated embodiments.

[0092] In a specific implementation, the present invention further provides a computer storage medium, wherein the computer storage medium may store a program, and when the program is executed, the program may include some or all of the steps in each embodiment of the simulation scene generation method provided by the present invention. The storage medium may be a disk, an optical disk, a read-only memory (ROM) or a random access memory (RAM), etc.

[0093] In a specific implementation, the present invention further provides a computer program product, wherein the computer program product includes executable instructions, and when the executable instructions are executed on a computer, the computer executes part or all of the steps in each embodiment of the simulation scene generation method provided by the present invention.

[0094] In the embodiments of the present application, "at least one" refers to one or more, and "plurality" refers to two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent the existence of A alone, the existence of A and B at the same time, and the existence of B alone. Among them, A and B can be singular or plural. The character " / " generally indicates that the previous and subsequent associated objects are in an "or" relationship. "At least one of the following" and similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one of a, b and c can be represented by: a, b, c, ab, ac, bc, or abc, where a, b, c can be single or multiple.

[0095] Those of ordinary skill in the art will appreciate that the various units and algorithm steps described in the embodiments disclosed herein can be implemented in a combination of electronic hardware, computer software, and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0096] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0097] In several embodiments provided in the present application, if any function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), disk or optical disk, etc., various media that can store program codes.

[0098] In this specification, the same or similar parts between the various embodiments can be referred to each other. In particular, for the device embodiment and the terminal embodiment, since they are basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the description in the method embodiment.

Claims

1. A blowby treatment device for an engine, applied to an engine system, the engine system comprising a turbocharger, a throttle, an intake manifold and a crankcase, the turbocharger being used to compress air to increase the intake volume, the throttle being used to control the conductance between the outlet end of the turbocharger and the intake end of the intake manifold, the intake manifold being used to supply intake air to each cylinder of the engine, characterized in that: The device comprises: An oil-gas separation module, used for performing oil-gas separation processing on the blow-by gas in the crankcase, and outputting the target blow-by gas at the gas outlet of the oil-gas separation module; a first blow-by gas recovery passage, wherein an air inlet of the first blow-by gas recovery passage is communicated with an air outlet of the oil-gas separation module, and an air outlet of the first blow-by gas recovery passage is communicated with an air inlet of the intake manifold, and the first blow-by gas recovery passage is used to transport the target blow-by gas after oil-gas separation to the intake manifold according to a pressure difference between the air outlet of the oil-gas separation module and the air inlet of the intake manifold; a second blow-by gas recovery passage, an air inlet of the second blow-by gas recovery passage being communicated with an air outlet of the oil-gas separation module, an air outlet of the second blow-by gas recovery passage being communicated with an air inlet of the turbocharger, the second blow-by gas recovery passage being used to deliver the target blow-by gas after oil-gas separation to the intake manifold according to a pressure difference between the air outlet of the oil-gas separation module and the air inlet of the turbocharger; A control module, used for obtaining the gas pressure of the crankcase; A third blow-by gas recovery passage, an air inlet of the third blow-by gas recovery passage is connected to an air outlet of the oil-gas separation module, an air outlet of the third blow-by gas recovery passage is connected to an air inlet of the throttle valve, and the third blow-by gas recovery passage is used to control the opening of the third blow-by gas recovery passage according to the air pressure of the crankcase.

2. The device according to claim 1, characterized in that The opening degree of the third blow-by gas recovery passage is proportional to the gas pressure of the crankcase.

3. The device according to claim 1, characterized in that The third blowby gas recovery passage specifically includes: A pressure regulating valve, wherein the air inlet of the pressure regulating valve is connected to the air outlet of the oil-gas separation module through a high-load breathing pipe, the air outlet of the pressure regulating valve is connected to the air inlet of the throttle valve, and the pressure regulating valve is used to control the opening of the third blowby gas recovery passage.

4. The device according to claim 1, characterized in that The third blowby gas recovery passage further includes: A venturi tube, wherein the air inlet of the venturi tube is connected to the air outlet of the pressure regulating valve, the air outlet of the venturi tube is connected to the air inlet of the throttle valve, and the venturi tube is used to adjust the flow rate of the target blowby gas.

5. The device according to claim 1, characterized in that The first blowby gas recovery path specifically includes: A PCV valve, wherein the air inlet of the PCV valve is connected to the air outlet of the oil-gas separation module, and the air outlet of the PCV valve is connected to the air inlet of the intake manifold through a low-load breathing tube. The PCV valve is used to transport the target blowby gas after oil-gas separation to the intake manifold when the air pressure at the air outlet of the oil-gas separation module is greater than the air pressure at the air inlet of the intake manifold.

6. A method for treating blowby of an engine, the engine comprising a crankcase, characterized in that: The method comprises: obtaining the air pressure of the crankcase; Determining whether the air pressure of the crankcase is greater than a preset air pressure; When the crankcase air pressure is greater than the preset air pressure, the third blow-by gas recovery passage is controlled to be opened, and the third blow-by gas recovery passage is used to transmit the target blow-by gas to the air intake of the engine.

7. The method according to claim 1, characterized in that The opening degree of the third blow-by gas recovery passage is proportional to the gas pressure of the crankcase.

8. A system for treating engine blowby, characterized in that: include: An engine system and a device for treating engine blowby gas according to any one of claims 1 to 5.

9. An electronic device, characterized in that: include: processor; Memory; and a computer program, wherein the computer program is stored in the memory, and the computer program includes instructions, which, when executed by the processor, enable the electronic device to perform the method according to any one of claims 6 to 7.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium includes a stored program, wherein when the program is executed, the device where the computer-readable storage medium is located is controlled to execute the method according to any one of claims 6 to 7.

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