Oil-gas separation device, engine and vehicle

Abstract

The oil-gas separation device comprises a first separation part and a pump body, the first separation part is provided with a first separation cavity, a main gas inlet, a first gas outlet and a second gas outlet, the main gas inlet, the first gas outlet and the second gas outlet communicate with the first separation cavity, and the main gas inlet, the first gas outlet and the second gas outlet are arranged at intervals; the pump body is provided with a pump cavity and a first air inlet channel and a second air inlet channel communicated with the pump cavity, the end, away from the pump cavity, of the first air inlet channel is communicated with the first air outlet, and the end, away from the pump cavity, of the second air inlet channel is communicated with the second air outlet. By arranging the two gas inlet channels of the pump body, the flow can be dispersed, the gas inlet flow speed is reduced, friction between fluid and the pipe wall is reduced, then pressure loss is reduced, and the oil-gas separation efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, and in particular to an oil-gas separation device, an engine and a vehicle. Background Art

[0002] When the vehicle is working normally, some unburned combustible mixture and combustion exhaust gas in the cylinder will enter the crankcase. These blowby gases will increase the temperature in the crankcase and increase the evaporation of the oil in the oil pan. The oil-gas separation device can effectively separate the oil mist generated by splash lubrication in the crankcase and the aerosol formed by the oil vapor evaporated at high temperature and the cylinder blowby gas, so that the oil can better lubricate the engine and reduce the emission of pollutants.

[0003] The existing oil-gas separation device is only provided with a single air inlet. When the air is taken in, the flow velocity is fast, and the pressure loss caused by the friction between the fluid and the pipe wall is large, which affects the oil-gas separation effect and efficiency. Utility Model Content

[0004] The utility model aims to provide an oil-gas separation device, an engine and a vehicle, which can solve the problem of large pressure loss of a single air inlet.

[0005] In order to achieve the purpose of the utility model, the utility model provides the following technical solutions:

[0006] In the first aspect, the utility model provides an oil-gas separation device, comprising a first separation component and a pump body, the first separation component having a first separation chamber and a main air inlet, a first air outlet, and a second air outlet all connected to the first separation chamber, the main air inlet, the first air outlet, and the second air outlet being arranged at intervals; the pump body having a pump chamber and a first air inlet channel and a second air inlet channel connected to the pump chamber, the end of the first air inlet channel away from the pump chamber being connected to the first air outlet, and the end of the second air inlet channel away from the pump chamber being connected to the second air outlet.

[0007] In one embodiment, the main air inlet is opened on one side surface of the first separator, the first air outlet and the second air outlet are opened on the other side surface of the first separator at intervals in the vertical direction, and the main air inlet is located between the first air outlet and the second air outlet in the vertical direction.

[0008] In one embodiment, an angle α is formed between an extension direction of the first air intake passage and an extension direction of the second air intake passage, and satisfies: 20°≤α≤60°.

[0009] In one embodiment, the pump body also has an air outlet channel, which is connected to the pump chamber and extends between the first air inlet channel and the second air inlet channel, and the extension direction of the air outlet channel intersects with the extension direction of the first air inlet channel; the end of the air outlet channel away from the pump chamber is a third air outlet, and the third air outlet is located between the pump chamber and the first separation chamber.

[0010] In one embodiment, the pump body includes a first shell and a second shell, the first shell has the first air inlet channel, the second shell has the second air inlet channel, and the first shell and the second shell are spliced ​​and together enclose the pump chamber and the air outlet channel.

[0011] In one embodiment, the oil-gas separation device also includes a second separation component and a first separation valve, the second separation component is connected to the first separation component, the second separation component is provided with a second separation chamber, the bottom wall of the first separation component is provided with an oil outlet, the oil outlet connects the first separation chamber and the second separation chamber, and the first separation valve is cooperatively connected to the oil outlet.

[0012] In one embodiment, the second separation member also has a third separation chamber connected to both the air outlet channel and the second separation chamber, and a return oil port is provided on the bottom wall of the third separation chamber. The oil-gas separation device also includes a second separation valve, and the second separation valve is cooperatively connected to the return oil port.

[0013] In one embodiment, the oil-gas separation device further includes a first filter element and a second filter element, the first filter element is accommodated in the first separation chamber, and the second filter element is accommodated in the third separation chamber.

[0014] In a second aspect, the utility model further provides an engine, comprising a crankcase and an oil-gas separation device as described in any one of the various embodiments of the first aspect, wherein the crankcase has a tortuous channel, and the tortuous channel is connected to the main air intake.

[0015] In a third aspect, the utility model further provides a vehicle, comprising a vehicle body and the engine as described in the second aspect, wherein the engine is connected to the vehicle body.

[0016] By setting a first separation component and a pump body, the first separation component has a first separation chamber and a main air inlet, a first air outlet and a second air outlet that are all connected to the first separation chamber, the pump body has a pump chamber and a first air inlet channel and a second air inlet channel that are connected to the pump chamber, and the first air inlet channel and the second air inlet channel are respectively connected to the first air outlet and the second air outlet at one end away from the pump chamber. The pump body takes in air through the two air inlet channels, which can disperse the flow rate, reduce the intake flow velocity, reduce the friction between the fluid and the pipe wall, thereby reducing the pressure loss and improving the oil and gas separation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 is a front view of an oil-gas separation device according to an embodiment;

[0019] Figure 2 is a right side view of an oil-gas separation device according to an embodiment;

[0020] Figure 3 is a top view of an oil-gas separation device according to an embodiment;

[0021] Figure 4 The diagram is a working diagram of an oil-gas separation device according to an embodiment.

[0022] Description of reference numerals:

[0023] 100-Oil and gas separation device;

[0024] 10-first separation member, 11-main air inlet pipe, 12-first air outlet, 13-second air outlet;

[0025] 20-pump body, 21-first shell, 211-first part, 212-second part, 22-second shell, 23-third air outlet;

[0026] 30-second separation member, 31-oil return port, 32-air outlet;

[0027] 40-oil return pipe;

[0028] 50- driving member;

[0029] 60-Connectors. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there can be a central component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there can be a central component at the same time.

[0032] Unless otherwise defined, all technical and scientific terms used in this utility model have the same meaning as those commonly understood by technicians in the technical field of this utility model. The terms used in the specification of this utility model are only for the purpose of describing specific embodiments and are not intended to limit this utility model. The term "and / or" used in this utility model includes any and all combinations of one or more related listed items.

[0033] In conjunction with the accompanying drawings, some embodiments of the present invention are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0034] An embodiment of the utility model provides a vehicle, comprising a vehicle body and an engine in the embodiment of the utility model, wherein the engine is connected to the vehicle body.

[0035] Optionally, the vehicle body is provided with a receiving space, and the engine is received in the receiving space of the vehicle body. The connection between the engine and the vehicle body may be a rigid connection, a flexible connection, an elastic connection, a suspension connection, etc., without limitation.

[0036] Optionally, the vehicle body is made of a material with high structural strength, specifically metal materials, high-strength plastics, ceramics, carbon fiber, etc. Metal materials include aluminum, aluminum alloys, magnesium alloys, iron and iron alloys, etc. The vehicle body is a split structure, with multiple parts connected and fixed by welding, bonding, clamping, screwing, etc.

[0037] The vehicle in the embodiment of the utility model can reduce pressure loss and improve the oil-gas separation effect and efficiency by adopting the engine in the embodiment of the utility model.

[0038] The utility model also provides an engine in an embodiment, including a crankcase and the oil-gas separation device in the utility model embodiment, the crankcase has a tortuous channel, and the tortuous channel is connected to the oil-gas separation device.

[0039] Optionally, the crankcase is a crankcase commonly used in the art, such as a flat-bottom crankcase, a gantry crankcase, a tunnel crankcase, etc., without limitation.

[0040] Optionally, the tortuous channel and the oil-gas separation device may be directly connected or indirectly connected, for example, the tortuous channel and the oil-gas separation device are connected via a pipeline, without specific limitation.

[0041] When the vehicle is working normally, some unburned combustible mixture and combustion exhaust gas in the cylinder will enter the crankcase. These blowby gases will increase the temperature in the crankcase and increase the evaporation of the oil in the oil pan. The oil-gas separation device can effectively separate the oil mist generated by splash lubrication in the crankcase and the aerosol formed by the oil vapor evaporated at high temperature and the cylinder blowby gas, so that the oil can better lubricate the engine and reduce the emission of pollutants.

[0042] The engine in the embodiment of the utility model can reduce pressure loss and improve the oil-gas separation effect and efficiency by adopting the oil-gas separation device in the embodiment of the utility model.

[0043] The oil-gas separation device in the embodiment of the utility model is described in detail below.

[0044] Please refer to Figure 1 , Figure 2 and Figure 3 An embodiment of the utility model provides an oil-gas separation device 100 , including a first separation element 10 and a pump body 20 .

[0045] Optionally, the first separation element 10 has a first separation chamber (not shown in the figure) and a main air inlet, a first air outlet 12 and a second air outlet 13 which are all connected to the first separation chamber, and the main air inlet, the first air outlet 12 and the second air outlet 13 are arranged at intervals.

[0046] Optionally, the shapes of the main air inlet, the first air outlet 12 and the second air outlet 13 are not limited and may be circular, elliptical, triangular, polygonal, etc.

[0047] Optional, such as Figure 1 As shown, the main air inlet is connected to a main air inlet pipe 11, and the main air inlet pipe 11 can be a commonly used pipe in the art, and is not specifically limited.

[0048] Optionally, the main air inlet, the first air outlet 12 and the second air outlet 13 may be located on the surface of the same side of the first separation element 10 , or on the surfaces of different sides, without any specific limitation.

[0049] Optionally, the first air outlet 12 and the second air outlet 13 may be spaced apart in the vertical direction, may be spaced apart in the horizontal direction, or may be spaced apart along the diagonal line, and there is no specific limitation thereto.

[0050] Optionally, the vertical direction X is a direction perpendicular to the ground when the vehicle is placed on the horizontal ground.

[0051] Optionally, the surface where the main air inlet is opened and the surfaces where the first air outlet 12 and the second air outlet 13 are opened can be two adjacent surfaces or two opposite surfaces, without limitation. Figure 1 As shown, the first air outlet 12 and the second air outlet 13 are spaced apart and arranged on a side surface of the first separation element 10 opposite to the main air inlet.

[0052] Optionally, the first separation member 10 may also be provided with a third air outlet, a fourth air outlet, etc., without limitation.

[0053] Optionally, the pump body 20 has a pump chamber and a first air inlet channel and a second air inlet channel connected to the pump chamber, the end of the first air inlet channel away from the pump chamber is connected to the first air outlet 12, and the end of the second air inlet channel away from the pump chamber is connected to the second air outlet 13.

[0054] Optionally, the pump body 20 may be a power pump commonly used in the art, such as an impeller pump, a gear pump, a screw pump, and the like.

[0055] Optionally, the first air inlet channel and the second air inlet channel may extend in a straight line or in a curved shape, without any specific limitation.

[0056] Optionally, the pump body 20 and the first separation member 10 are connected by welding, bonding, clamping, screwing, etc., which are not specifically limited.

[0057] In the existing oil-gas separation device 100, only one air inlet is usually connected to the pump body 20. When the load is high or the engine needs more air, the air intake speed is fast, and the friction between the fluid and the pipe wall is large, which leads to increased pressure loss. When the pressure loss is too large, the flow of the oil-gas mixture will be greatly hindered, resulting in incomplete oil-gas separation.

[0058] The oil-gas separation device 100 in the embodiment of the utility model is provided with a first separation component 10 and a pump body 20. The first separation component 10 has a first separation chamber and a main air inlet, a first air outlet 12 and a second air outlet 13 which are all connected to the first separation chamber. The pump body 20 has a pump chamber and a first air inlet channel and a second air inlet channel which are connected to the pump chamber. The ends of the first air inlet channel and the second air inlet channel which are away from the pump chamber are respectively connected to the first air outlet 12 and the second air outlet 13. The pump body 20 takes in air through the two air inlet channels, which can disperse the flow rate, reduce the intake flow velocity, reduce the friction between the fluid and the pipe wall, thereby reducing the pressure loss and improving the oil-gas separation efficiency.

[0059] In addition, by providing two air outlets of the first separator 10 and connecting them to the first air inlet channel and the second air inlet channel respectively, the flow rate can be reduced while the flow rate can be dispersed to reduce the fluid impact force at the entrance of a single air inlet channel, thereby reducing the pressure loss.

[0060] Optional, such as Figure 1As shown, the main air inlet is opened on one side surface of the first separator 10, and the first air outlet 12 and the second air outlet 13 are opened on the other side surface of the first separator 10 at intervals in the vertical direction X. The main air inlet is located between the first air outlet 12 and the second air outlet 13 in the vertical direction.

[0061] Optionally, the first air outlet 12 and the second air outlet 13 are spaced apart in the vertical direction X on the other side surface of the first separation element 10 opposite to the main air inlet.

[0062] Optionally, the vertical direction X is a direction perpendicular to the ground when the vehicle is normally placed on the ground.

[0063] By arranging the first air outlet 12 and the second air outlet 13 at intervals in the vertical direction X, and the main air inlet is located between the first air outlet 12 and the second air outlet 13 in the vertical direction X, the air entering the pump body 20 can be made more uniform, reducing eddy currents and turbulence, thereby reducing pressure loss caused by fluid impact.

[0064] Optionally, an angle α is formed between an extension direction of the first air intake passage and an extension direction of the second air intake passage, and satisfies: 20°≤α≤60°.

[0065] Optionally, the first air intake channel and the second air intake channel both extend along a straight line, and both the first air intake channel and the second air intake channel have an axis, and an angle α is formed between the axes.

[0066] Optionally, the value of the angle α may be 20°, 30°, 40°, etc., without specific limitation.

[0067] By setting an included angle α between the first air intake channel and the second air intake channel to satisfy: 20°≤α≤60°, the flow rate can be dispersed, the intake flow velocity can be reduced, the friction between the fluid and the tube wall can be reduced, and the pressure loss can be reduced, thereby improving the oil-gas separation efficiency.

[0068] Optional, such as Figure 2 As shown, the pump body 20 also has an air outlet channel, which is communicated with the pump chamber and extends between the first air inlet channel and the second air inlet channel. The extension direction of the air outlet channel intersects with the extension direction of the first air inlet channel.

[0069] Optionally, the pump body 20 is generally annular with a notch, the first air inlet channel and the second air inlet channel are connected to one end of the pump chamber, and the air outlet channel is connected to the other end of the pump chamber.

[0070] Optionally, one end of the air outlet channel away from the pump chamber is a third air outlet 23, and the third air outlet 23 is located between the pump chamber and the first separation chamber.

[0071] The pump body 20 is also provided with an air outlet channel, which is connected to the pump chamber and is located between the first air inlet channel and the second air inlet channel. The extension direction of the air outlet channel and the extension direction of the first air inlet channel have a second angle. The air outlet channel is arranged between the first air inlet channel and the second air inlet channel. The third air outlet 23 is located between the pump chamber and the first separation chamber. The degree of integration is high and the volume is small.

[0072] Optionally, the pump body 20 includes a first shell 21 and a second shell 22, the first shell 21 has a first air inlet channel, the second shell 22 has a second air inlet channel, and the first shell 21 and the second shell 22 are spliced ​​and jointly enclose a pump chamber and an air outlet channel.

[0073] Optionally, the first shell 21 and the second shell 22 may be connected by welding, bonding, clamping, screwing, etc., without specific limitation.

[0074] Optionally, the first shell 21 includes a first part 211 and a second part 212, the first part 211 and the second part 212 are connected, the first part 211 is columnar, and the first part 211 has a first air intake channel; the second part 212 is semi-cylindrical, and the second part 212 has a first empty groove, and the first empty groove is connected to the first air intake channel.

[0075] Optionally, the structure of the second shell 22 is roughly symmetrical to the first shell 21, and the second shell 22 has a second hollow groove. When the first shell 21 and the second shell 22 are spliced ​​together, the wall surface of the first hollow groove and the wall surface of the second hollow groove jointly enclose a pump chamber.

[0076] Optionally, an end of the second portion 212 of the first shell 21 away from the first portion 211 and an end corresponding to the second shell 22 together enclose an air outlet channel.

[0077] The pump body 20 includes a first shell 21 and a second shell 22, wherein the first shell 21 has a first air inlet passage, and the second shell 22 has a second air inlet passage. The first shell 21 and the second shell 22 are spliced ​​and jointly enclose a pump chamber and an air outlet passage, which has a simple structure and a high degree of integration.

[0078] Optionally, the oil-gas separation device 100 also includes a second separation component 30, which is connected to the first separation component 10, and the second separation component 30 is provided with a second separation chamber (not shown in the figure). The bottom wall of the first separation component 10 is provided with an oil outlet (not shown in the figure), and the oil outlet connects the first separation chamber and the second separation chamber.

[0079] Optionally, the second separating member 30 and the first separating member 10 may be connected by welding, bonding, clamping, screwing, etc., without limitation.

[0080] Optionally, the shape of the oil outlet can be circular, triangular, square, etc., without limitation. The bottom wall of the first separation member 10 is provided with an oil outlet so that the oil in the oil-gas mixture entering from the main air inlet falls under the action of gravity and enters the second separation chamber from the oil outlet to achieve separation of oil and gas.

[0081] Optionally, the oil-gas separation device 100 further includes a first separation valve (not shown in the figure), which is cooperatively connected to the oil outlet and is used to block the gas in the oil-gas mixture from passing through.

[0082] Optionally, the first separation valve is an oil-gas separation valve commonly used in the field, which separates the oil particles in the gas through the principles of filtration and sedimentation, allowing the oil to pass through but blocking the passage of gas, such as a straight-through oil-gas separation valve, a three-way oil-gas separation valve, and a ball valve oil-gas separation valve, etc., without specific limitation.

[0083] Optionally, the first separation valve is accommodated in the first separation chamber, and the separation valve and the oil outlet may be connected by welding, bonding, clamping, screwing, etc., without limitation.

[0084] By setting the oil-gas separation device 100 to include a first separation valve, the first separation valve is connected with the oil outlet, which can allow oil to pass through but prevent gas from passing through, thereby achieving oil-gas separation.

[0085] Optionally, the second separation element 30 also has a third separation chamber (not shown in the figure) that is connected to both the air outlet channel and the second separation chamber, and a return oil port 31 is provided on the bottom wall of the third separation chamber. The oil-gas separation device 100 also includes a second separation valve, which is cooperatively connected to the return oil port 31.

[0086] Optionally, the third separation chamber and the gas outlet channel may be directly connected or indirectly connected, and there is no specific limitation.

[0087] Optional, such as Figure 2 As shown, the oil-gas separation device also includes a connector 60, and the third separation chamber and the air outlet channel are connected through the connector 60. The connection method between the connector 60 and the third air outlet 23 can be welding, bonding, clamping, screwing, etc., without limitation.

[0088] Optionally, the second separation valve is similar to the aforementioned first separation valve, and is referred to for reference only and will not be described in detail.

[0089] Optionally, the second separation valve and the oil return port 31 may be connected by welding, bonding, clamping, screwing, etc., without limitation.

[0090] Optionally, the oil-gas separation device 100 further includes an oil return pipe 40 , one end of which is cooperatively connected to the oil return port 31 , and the other end of which is connected to the crankcase.

[0091] Optionally, the bottom walls of the second separation chamber and the third separation chamber both extend in a step-like shape toward the oil return port 31, and the oil separated in the second separation chamber flows into the third separation chamber along the bottom wall of the second separation chamber, and flows along the bottom wall of the third separation chamber to the oil return port 31, and flows out from the oil return port 31.

[0092] Optionally, the second separation element 30 is further provided with an air outlet 32 ​​, which is communicated with the third separation chamber and is used to discharge the gas entering the second separation element 30 from the pump body 20 .

[0093] By setting up the second separation element 30, a second separation chamber connected to both the air outlet channel and the first separation chamber is provided. An oil return port 31 is provided on the bottom wall of the second separation chamber. The oil-gas separation device 100 also includes a second separation valve, which is cooperatively connected to the oil return port 31 to prevent gas from overflowing from the oil return port 31, thereby improving the oil-gas separation effect.

[0094] Optionally, the oil-gas separation device 100 also includes a first filter element (not shown in the figure) and a second filter element (not shown in the figure), the first filter element is accommodated in the first separation element 10, and the second filter element is accommodated in the second separation chamber, and the first filter element and the second filter element are used to filter the oil in the oil-gas mixture.

[0095] Optionally, the first separation element 10 is provided with a receiving cavity (not shown in the figure), and the main air inlet, the first air outlet 12 and the second air outlet 13 are all connected to the receiving cavity. The first filter element is received in the first separation cavity and connected to the inner wall of the first separation cavity, and the connection method can be welding, bonding, clamping, screwing, etc., without limitation.

[0096] Optionally, the first filter element may be a porous plate, felt, etc., which is used to block oil droplets in the oil-gas mixture entering from the main air inlet to preliminarily separate the oil and gas.

[0097] Optionally, the type of the second filter element and the connection method between the second filter element and the third separation chamber are similar to those of the first filter element, which can be referred to and will not be described in detail. The second filter element can perform secondary separation on the oil-gas mixture gushing out from the air outlet channel, and the oil is adsorbed or blocked by the second filter element to form oil droplets, and flows along the bottom wall of the second separation chamber to the oil return port 31.

[0098] By setting the oil-gas separation device 100 to also include a first filter element and a second filter element, the first filter element is accommodated in the first separation element 10, and the second filter element is accommodated in the second separation chamber. The first filter element and the second filter element separate the oil-gas mixture twice respectively, which can improve the oil-gas separation effect.

[0099] Optional, such as Figure 4As shown, when the oil-gas separation device 100 is working, the path of the oil-gas mixture is shown by arrow A in the figure, the path of the gas is shown by arrow B in the figure, and the path of the oil is shown by arrow C in the figure.

[0100] When the oil-gas mixture enters the first separation chamber through the main air inlet, part of the oil falls under the action of the first filter element and gravity, enters the second separation chamber through the oil outlet, and flows to the oil return port 31 along the bottom wall of the second separation chamber.

[0101] Subsequently, after the oil-gas mixture entering the pump body through the first air inlet channel and the second air inlet channel is centrifugally separated, the gas and oil are separated and enter the third separation chamber along the third air outlet, wherein the oil flows along the bottom wall of the third separation chamber to the oil return port 31 under the action of the second filter element and gravity, and then is discharged along the oil return pipe 40, while the gas is discharged through the air outlet 32.

[0102] Optional, such as Figure 1 and Figure 3 As shown, the oil-gas separation device 100 further includes a driving member 50 , and the driving member 50 is connected to the pump body 20 .

[0103] Optionally, the driving member 50 is connected to the pump body 20 and drives the blades in the pump body 20 to rotate. The driving member 50 can be a driving motor commonly used in the art, such as various DC motors or AC motors, etc., and is not specifically limited.

[0104] Optionally, the driving member 50 and the pump body 20 may be directly connected or indirectly connected. For example, the driving member 50 and the pump body 20 are connected via a rotating shaft, etc., without specific limitation.

[0105] Optionally, the oil-gas separation device 100 further includes a detector, which is used to detect pressure parameters in the air intake chamber.

[0106] Optionally, the detector is a commonly used air pressure detector in the art, without specific limitation.

[0107] Optionally, the detector is built into the drive member 50, and the pump body 20 is an impeller pump. The detector is used to detect the main air inlet pressure of the oil mist separation device, and add the pump air pressure loss of the pipeline to indirectly calculate the crankcase pressure. The pressure signal is then input into the ECU (electronic control unit) and then transmitted back to the control part of the motor to adjust the impeller pump speed. By controlling the amount of blowby gas extracted, the crankcase pressure is controlled to fluctuate slightly around the set value, so that the crankcase pressure is stably maintained within a certain negative pressure range, which can achieve closed-loop control of the crankcase pressure and improve the separation efficiency of the oil-gas separation device 100.

[0108] In the description of the embodiments of the present invention, it should be noted that the orientation or positional relationship of terms such as "center", "up", "down", "left", "right", "vertical", "horizontal", "inside" and "outside" are based on the orientation or positional relationship described in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0109] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made according to the claims of the present invention still fall within the scope covered by the present invention.

Claims

1. An oil-gas separation device, characterized in that: include: A first separation member comprises a first separation chamber and a main air inlet, a first air outlet and a second air outlet which are all connected to the first separation chamber, wherein the main air inlet, the first air outlet and the second air outlet are arranged at intervals from each other; The pump body comprises a pump chamber and a first air inlet channel and a second air inlet channel connected to the pump chamber, wherein an end of the first air inlet channel away from the pump chamber is connected to the first air outlet, and an end of the second air inlet channel away from the pump chamber is connected to the second air outlet.

2. The oil-gas separation device according to claim 1, characterized in that: The main air inlet is opened on one side surface of the first separator, the first air outlet and the second air outlet are opened on the other side surface of the first separator at intervals in the vertical direction, and the main air inlet is located between the first air outlet and the second air outlet in the vertical direction.

3. The oil-gas separation device according to claim 2, characterized in that: An included angle α is formed between an extending direction of the first air intake passage and an extending direction of the second air intake passage, and satisfies: 20°≤α≤60°.

4. The oil-gas separation device according to claim 2, characterized in that: The pump body further comprises an air outlet passage, the air outlet passage is communicated with the pump chamber and extends between the first air inlet passage and the second air inlet passage, and an extension direction of the air outlet passage intersects with an extension direction of the first air inlet passage; One end of the air outlet passage away from the pump chamber is a third air outlet, and the third air outlet is located between the pump chamber and the first separation chamber.

5. The oil-gas separation device according to claim 4, characterized in that: The pump body comprises a first shell and a second shell, the first shell has the first air inlet passage, the second shell has the second air inlet passage, and the first shell and the second shell are spliced ​​and jointly enclose the pump chamber and the air outlet passage.

6. The oil-gas separation device according to claim 4, characterized in that: The oil-gas separation device also includes a second separation component and a first separation valve. The second separation component is connected to the first separation component. The second separation component has a second separation chamber. The bottom wall of the first separation component is provided with an oil outlet. The oil outlet connects the first separation chamber and the second separation chamber. The first separation valve is cooperatively connected to the oil outlet.

7. The oil-gas separation device according to claim 6, characterized in that: The second separation element also has a third separation chamber connected to both the air outlet channel and the second separation chamber, and the bottom wall of the third separation chamber is provided with an oil return port. The oil-gas separation device also includes a second separation valve, which is cooperatively connected to the oil return port.

8. The oil-gas separation device according to claim 7, characterized in that: The oil-gas separation device further includes a first filter element and a second filter element. The first filter element is accommodated in the first separation chamber, and the second filter element is accommodated in the third separation chamber.

9. An engine, characterized in that: It comprises a crankcase and an oil-gas separation device as claimed in any one of claims 1 to 8, wherein the crankcase has a tortuous passage, and the tortuous passage is communicated with the main air intake port.

10. A vehicle, characterized in that: It comprises a vehicle body and the engine as claimed in claim 9, wherein the engine is connected to the vehicle body.

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