CN213478427U - Oil-gas separation device and engine and vehicle with same - Google Patents
Oil-gas separation device and engine and vehicle with same Download PDFInfo
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- CN213478427U CN213478427U CN202021925380.7U CN202021925380U CN213478427U CN 213478427 U CN213478427 U CN 213478427U CN 202021925380 U CN202021925380 U CN 202021925380U CN 213478427 U CN213478427 U CN 213478427U
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Abstract
The utility model discloses an oil-gas separation device and engine, vehicle that have it, oil-gas separation device includes: the oil-gas separation device comprises a body, wherein an oil-gas separation cavity is defined in the body, and an inlet, an outlet, a first oil return port and a second oil return port are formed in the body; the fine separation piece is arranged in the oil-gas separation cavity and divides the oil-gas separation cavity into a first separation cavity and a second separation cavity; the oil-gas mixture entering the first separation cavity from the inlet is suitable for the oil separated by the coarse separation part to flow out from the first oil return port, the gas separated by the coarse separation part is discharged from the outlet, and the separated oil flows out from the first oil return port and/or the second oil return port. The oil-gas separation device can be separated from the cylinder head cover of the engine and is independently arranged, and the limitation on oil return height design of the engine is effectively reduced, so that the oil-gas separation efficiency is improved, and the oil consumption of the engine is further reduced.
Description
Technical Field
The utility model belongs to the technical field of the oil-gas separation technique and specifically relates to an oil-gas separation device and engine, vehicle that have it are related to.
Background
In the related art, the oil-gas separating device is integrated with a cylinder head cover of an engine. However, the internal structure of the cylinder head cover, the valve train of the engine and the oil return structure are all complex, so that the design of the oil return height of the engine is limited, and meanwhile, the oil-gas separation device is difficult to achieve the separation efficiency under the design standard, and the performance of the engine is affected.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, an object of the utility model is to provide an oil-gas separation device can reduce the restriction to the oil return high design of engine effectively to promote oil-gas separation efficiency, and then reduced the oil consumption of engine.
Another object of the utility model is to provide an engine with above-mentioned oil-gas separation device.
It is another object of the present invention to provide a vehicle having the above-mentioned engine.
According to the utility model discloses oil-gas separation device of first aspect embodiment, include: the oil-gas separation device comprises a body, wherein an oil-gas separation cavity is defined in the body, an inlet, an outlet, a first oil return port and a second oil return port are formed in the body, and the inlet, the outlet, the first oil return port and the second oil return port are all communicated with the oil-gas separation cavity; the fine separation piece is arranged in the oil-gas separation cavity and divides the oil-gas separation cavity into a first separation cavity and a second separation cavity, the inlet and the first oil return port are communicated with the first separation cavity, and the outlet and the second oil return port are communicated with the second separation cavity; the rough separation piece is arranged in the first separation cavity, the oil-gas mixture entering the first separation cavity from the inlet is suitable for flowing out of the first oil return port after being separated by the rough separation piece, the separated oil flows out of the first oil return port, the gas separated out of the oil-gas mixture after being separated by the fine separation piece is discharged from the outlet, and the separated oil flows out of the first oil return port and/or the second oil return port.
According to the utility model discloses oil-gas separation device, through establishing the smart separator in the oil-gas separation intracavity and separate into first disengagement chamber and second disengagement chamber with the oil-gas separation chamber, import and first oil return opening all communicate with first disengagement chamber, export and second oil return opening all communicate with second disengagement chamber, and the rough separation spare is established at first disengagement intracavity. From this for oil-gas separation device can break away from the cylinder head cover of engine and set up alone on the engine, can reduce the restriction to the oil return high design of engine effectively, thereby has promoted oil-gas separation efficiency, and then can reduce the oil consumption of engine effectively.
According to some embodiments of the invention, the fine separator comprises: the fine separation plate is provided with a plurality of through holes; and the filtering piece is arranged on one side surface of the fine separation plate, which is adjacent to the center of the second separation cavity, and the filtering piece covers the plurality of through holes on the fine separation plate.
According to some embodiments of the invention, the fine separator further comprises: the mounting panel is established the neighbouring of smart separation plate one side at second separation chamber center, filter and press from both sides and establish smart separation plate with between the mounting panel.
According to some embodiments of the utility model, be equipped with the extension of upwards extending on the diapire of oil-gas separation chamber, be formed with first recess on the top surface of extension, the lower extreme cooperation of smart separation plate is in the first recess.
According to some embodiments of the present invention, the fine separation plate includes a first plate portion and a second plate portion, the second plate portion is followed the periphery of first plate portion is along outwards extending, be formed with a plurality ofly on the first plate portion the through-hole, both sides in the thickness direction of first plate portion all bulge in both sides in the thickness direction of second plate portion, a part cooperation of second plate portion is in the first recess, just the lower surface of first plate portion with the top surface of extension ends.
According to the utility model discloses a some embodiments, be formed with the second recess on the roof in the oil-gas separation intracavity, the top of smart separation plate is equipped with the convex bellying that makes progress, the bellying cooperation is in the second recess.
According to some embodiments of the utility model, the rough separation piece is the rough separation baffle, the rough separation piece with the import is just right, the import is in orthographic projection on the rough separation piece is located on the rough separation piece.
According to some embodiments of the invention, the body comprises: a housing, a top of which is open, the inlet being formed on a sidewall of the housing, the first oil return port and the second oil return port being formed at a bottom of the housing to be spaced apart from each other; the lid, the lid is established the top of casing, the lid with the casing is injectd jointly the oil-gas separation chamber, the rough separation piece with the fine separation piece is all established the bottom of lid, the export forms on the lid.
According to the utility model discloses engine of second aspect embodiment includes: a timing cover; oil-gas separation device, oil-gas separation device is according to the utility model discloses the oil-gas separation device of above-mentioned first aspect embodiment, oil-gas separation device establishes in the shroud in right time.
According to the utility model discloses vehicle of third aspect embodiment, include according to the utility model discloses the engine of above-mentioned second aspect embodiment.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is an exploded view of an oil-gas separation device according to an embodiment of the present invention;
FIG. 2 is a partial cross-sectional view of an oil and gas separation device according to an embodiment of the present invention;
fig. 3 is an assembled side view of a timing cover and an oil-gas separation device according to an embodiment of the present invention.
Reference numerals:
100: an oil-gas separation device;
1: a body; 11: a housing; 111: an inlet; 112: a first oil return port;
113: a second oil return port; 12: a cover body; 121: an outlet; 13: an oil-gas separation chamber;
131: a first separation chamber; 132: a second separation chamber; 14: mounting a plate; 15: an extension portion;
151: a first groove; 2: a fine separation member; 21: a fine separation plate; 211: a first plate portion;
2111: a through hole; 212: a second plate portion; 213: a boss portion; 22: a filter member; 3: a coarse separator;
200: a timing cover.
Detailed Description
Embodiments of the present invention are described in detail below, and the embodiments described with reference to the drawings are exemplary.
An oil-gas separation device 100 according to an embodiment of the present invention is described below with reference to fig. 1 to 3. In the following description of the present application, the oil-gas separation device 100 is explained by taking an example of its application to an engine. Of course, the oil and gas separation device 100 may also be applied to other types of power plants, not limited to engines.
As shown in fig. 1-2, the oil-gas separation device 100 according to the embodiment of the present invention includes a body 1, a fine separator 2, and a coarse separator 3.
Specifically, an oil-gas separation cavity 13 is defined in the body 1, an inlet 111, an outlet 121, a first oil return port 112 and a second oil return port 113 are formed on the body 1, and the inlet 111, the outlet 121, the first oil return port 112 and the second oil return port 113 are all communicated with the oil-gas separation cavity 13. For example, in the example of fig. 1 and 2, when the oil-gas separation device 100 is in operation, the oil-gas mixture may enter the oil-gas separation chamber 13 from the inlet 111, and the separation of oil and gas is completed in the oil-gas separation chamber 13, the separated oil may flow back to the oil pan of the engine from the first oil return port 112 or the second oil return port 113, and the separated gas may be discharged from the outlet 121 and enter the intake system of the engine for recycling. And finally, completing the oil-gas separation process of the oil-gas mixture.
Referring to fig. 2, the fine separation member 2 is disposed in the oil-gas separation chamber 13 and divides the oil-gas separation chamber 13 into a first separation chamber 131 and a second separation chamber 132, the inlet 111 and the first oil return port 112 are both communicated with the first separation chamber 131, and the outlet 121 and the second oil return port 113 are both communicated with the second separation chamber 132. The coarse separator 3 is arranged in the first separation chamber 131.
The oil-gas mixture entering the first separation chamber 131 from the inlet 111 is suitable for the separated oil after being separated by the coarse separator 3 to flow out from the first oil return port 112. The oil-gas mixture passes through the coarse separator 3 in the first separation chamber 131, so that oil with large particle size can be separated out, and the oil-gas mixture can flow back to the oil pan through the first oil return opening 112, so that coarse separation of the oil-gas mixture is realized. After the oil-gas mixture after the coarse separation is separated by the fine separator 2, the separated gas is discharged from the outlet 121 and the separated oil flows out from the first oil return port 112 and/or the second oil return port 113, so that the oil with a small particle size in the oil-gas mixture after the coarse separation is separated and can flow back to the oil pan through the first oil return port 112 or the second oil return port 113, and the separated gas can flow from the outlet 121 to the intake system of the engine to be recycled.
Therefore, after the oil-gas mixture is subjected to rough separation and fine separation, most of oil in the oil-gas mixture is separated and flows back to the oil pan through the first oil return port 112 and the second oil return port 113, and the oil consumption of the engine can be effectively reduced. In addition, compare with traditional oil-gas separation device, oil-gas separation device 100 in this application is the individual structure, and oil-gas separation device 100 can break away from the cylinder head cover of engine, sets up alone in suitable position on the engine to improve the mounted position of oil-gas separation device 100 and the diversification of direction of installation, and the diversification of rough separation spare 3 and smart separation spare 2, can reduce the restriction of the oil return high design to the engine simultaneously effectively. In addition, because the oil-gas mixture can be in oil-gas separation chamber 13 through rough separation and fine separation, the separation efficiency of oil-gas separation device 100 has been improved effectively for oil-gas separation device 100 can satisfy separation efficiency under the design standard, simultaneously, through separating oil-gas separation chamber 13 into first separation chamber 131 and second separation chamber 132, make the oil-gas mixture can separate in the cavity of difference, has further guaranteed oil-gas separation device 100's separation efficiency.
According to the utility model discloses oil-gas separation device 100, through establishing smart separator 2 in oil-gas separation chamber 13 and separate into first separation chamber 131 and second separation chamber 132 with oil-gas separation chamber 13, import 111 and first oil return opening 112 all communicate with first separation chamber 131, export 121 and second oil return opening 113 all communicate with second separation chamber 132, and rough separator 3 is established in first separation chamber 131. From this for oil-gas separation device 100 can break away from the cylinder head cover of engine and set up alone on the engine, can reduce the restriction to the oil return high design of engine effectively, thereby has promoted oil-gas separation efficiency, and then can reduce the oil consumption of engine effectively.
According to some embodiments of the present invention, the fine separating element 2 includes a fine separating plate 21 and a filtering element 22, and a plurality of through holes 2111 are formed on the fine separating plate 21. In the description of the present invention, "a plurality" means two or more. The filter member 22 is provided on a side surface of the fine separation plate 21 adjacent to the center of the second separation chamber 132, and the filter member 22 covers the plurality of through holes 2111 of the fine separation plate 21. For example, referring to fig. 2 in combination with fig. 1, the through holes 2111 may be arranged in a substantially array on the fine separation plate 21, the oil-gas mixture after the coarse separation may be subjected to a first fine separation in the process of flowing through the fine separation plate 21, and the oil after the first fine separation may flow back to the oil pan through the first oil return port 112 or the second oil return port 113. Since the plurality of through holes 2111 on the fine separation plate 21 are covered by the filtering member 22, the oil-gas mixture after the first fine separation can directly flow to the filtering member 22 for the second fine separation, the oil after the second fine separation can flow back to the oil pan through the second oil return port 113, and the separated gas flows out from the outlet 121. Therefore, the separation efficiency of the oil-gas mixture can be effectively increased, and the oil consumption of the engine is further reduced.
Further, referring to fig. 2, the fine separation member 2 further includes a mounting plate 14, the mounting plate 14 is disposed on one side of the fine separation plate 21 adjacent to the center of the second separation chamber 132, and the filter member 22 is sandwiched between the fine separation plate 21 and the mounting plate 14. The mounting plate 14 may be connected to a side of the fine separation plate 21 adjacent to the center of the second separation chamber 132 by a snap-fit structure, and the filter member 22 may be fixed between the fine separation plate 21 and the mounting plate 14. So set up for filter 22 can press from both sides tightly between smart separation plate 21 and mounting panel 14, has improved filter 22's firm nature effectively, avoids filter 22 to take place to drop when the engine is worked, and has made things convenient for the installation of filtering 22.
In some alternative embodiments, the filter 22 is a non-woven fabric or a filter cotton. The non-woven fabrics and the filter cotton have the performance of filtering extremely small molecules and have good filtering performance, and meanwhile, the non-woven fabrics or the filter cotton have the advantages of corrosion resistance, long service life, low cost and the like. But is not limited thereto.
According to some embodiments of the utility model, be equipped with the extension 15 that upwards extends on the diapire of oil-gas separation chamber 13, be formed with first recess 151 on the top surface of extension 15, the lower extreme cooperation of smart separation plate 21 is in first recess 151. Referring to fig. 2, the extension 15 extends from the bottom wall of the oil gas separation chamber 13 toward the center of the oil gas separation chamber 13, a first groove 151 is formed at the top of the extension 15, and the shape of the first groove 151 may be adapted to the shape of the lower end of the fine separation plate 21. When the fine separator plate 21 is installed, the lower end of the fine separator plate 21 is matched with the first groove 151 to ensure the stability of the fine separator plate 21 during operation, and meanwhile, the fine separator plate 21 and the extension part 15 can separate the oil-gas separation cavity 13 into the first separation cavity 131 and the second separation cavity 132, so that oil-gas mixtures can be effectively separated in different cavities.
Further, the fine separation plate 21 includes a first plate portion 211 and a second plate portion 212, the second plate portion 212 extends outward from the outer periphery of the first plate portion 211, a plurality of through holes 2111 are formed in the first plate portion 211, both sides of the first plate portion 211 in the thickness direction protrude out of both sides of the second plate portion 212 in the thickness direction, a portion of the second plate portion 212 fits in the first groove 151, and the lower surface of the first plate portion 211 abuts against the top surface of the extension portion 15. For example, in the example of fig. 1, the first plate portion 211 is substantially rectangular in shape, and the plurality of through holes 2111 may be arranged in an array at the first plate portion 211, with both sides in the thickness direction of the first plate portion 211 being opposed to the rough separation member 3 and the filter member 22, respectively. From this, can guarantee effectively that the oil-gas mixture through the rough separation can directly get into smart separation board 21 and carry out the first smart separation, the oil-gas mixture after the first smart separation can get into effectively and filter piece 22 and carry out the smart separation of second to can improve oil-gas separation device 100's separation efficiency effectively. Moreover, because the lower end of the second plate portion 212 is fitted in the first groove 151 of the extension portion 15, and the lower surface of the first plate portion 211 abuts against the top surface of the extension portion 15, the sealing performance of the first groove 151 of the extension portion 15 can be effectively ensured, and the oil-gas mixture after the first fine separation is prevented from directly entering the second separation chamber 132 without being separated by the fine separation member 2.
Further, a second groove is formed on the top wall in the oil-gas separation cavity 13, a protruding portion 213 protruding upwards is arranged at the top of the fine separation plate 21, and the protruding portion 213 is matched in the second groove. Referring to fig. 1 and 2, a protrusion 213 protrudes upward from the top surface of the fine separation plate 21 and extends along the length direction of the fine separation plate 21, a second groove is formed on the side of the body 1 facing the oil-gas separation chamber 13, and the shape of the second groove may be matched with the shape of the protrusion 213. When the fine separating plate 21 is installed, the protruding portion 213 is matched with the second groove, so that the fine separating plate 21 is conveniently installed, and the assembling efficiency can be improved.
Alternatively, when the protrusion 213 is fitted in the second groove, the protrusion 213 may be welded in the second groove by welding, and thus, the connection between the fine separating plate 21 and the body 1 may be further improved.
According to some embodiments of the present invention, as shown in fig. 2, coarse separator 3 is a coarse separator, coarse separator 3 is opposite to inlet 111, and the orthographic projection of inlet 111 on coarse separator 3 is located on coarse separator 3. So set up for the oil-gas mixture who gets into in the oil-gas separation chamber 13 from import 111 can flow to rough separation piece 3 effectively and carry out rough separation, guarantees rough separation piece 3's separation efficiency, and rough separation piece 3's simple structure is convenient for process simultaneously.
According to some embodiments of the utility model, referring to fig. 1 and 2, body 1 includes casing 11 and lid 12, and casing 11's top is opened, and import 111 forms on casing 11's lateral wall, and import 111 communicates with oil-gas separation chamber 13, and the oil-gas mixture of being convenient for gets into inside body 1. First oil return opening 112 and second oil return opening 113 separate each other and form in the bottom of casing 11, and lid 12 is established at the top of casing 11, and lid 12 and casing 11 inject oil-gas separation chamber 13 jointly for oil-gas separation chamber 13 is for closed chamber, makes things convenient for the oil-gas mixture to carry out oil-gas separation in oil-gas separation chamber 13, can effectively avoid revealing of oil-gas mixture simultaneously. The rough separating piece 3 and the fine separating piece 2 are both arranged at the bottom of the cover body 12, so that the rough separating piece 3 and the fine separating piece 2 are positioned in the oil-gas separating cavity 13, and oil-gas separation is carried out on oil-gas mixtures in the oil-gas separating cavity 13. An outlet 121 is formed on the cover body 12 so that the gas separated by the oil-gas mixture through the rough separator 3 and the fine separator 2 can be discharged from the outlet 121. In addition, the body 1 is provided with the shell 11 and the cover 12, so that the rough separating part 3 and the fine separating part 2 can be directly assembled on the cover 12, and then the cover 12 is directly installed on the top of the shell 11, thereby facilitating the assembly and disassembly of the shell 11 and the cover 12 and improving the assembly efficiency of the oil-gas separation device 100.
As shown in fig. 3, an engine (not shown) according to an embodiment of the present invention includes a timing cover 200 and an oil-gas separation device 100. The oil-gas separation device 100 is arranged in the timing cover 200, and the oil-gas separation device 100 is the oil-gas separation device 100 according to the above-mentioned first aspect of the present invention.
According to the utility model discloses engine through establishing oil-gas separation device 100 in timing shroud 200, make full use of the inside unnecessary space of timing shroud 200 for the engine can realize the design of not unidimensional oil return height, reduces the oil consumption of engine.
According to a third aspect of the present invention, a vehicle (not shown) includes an engine according to the second aspect of the present invention.
According to the utility model discloses the vehicle, through adopting above-mentioned engine, oil consumption when can reducing the vehicle effectively and travel to improve the performance of vehicle.
Other configurations and operations of vehicles according to embodiments of the present invention are known to those of ordinary skill in the art and will not be described in detail herein.
In the description of the present invention, it is to be understood that the terms "center", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", "circumferential" and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. An oil-gas separation device, comprising:
the oil-gas separation device comprises a body, wherein an oil-gas separation cavity is defined in the body, an inlet, an outlet, a first oil return port and a second oil return port are formed in the body, and the inlet, the outlet, the first oil return port and the second oil return port are all communicated with the oil-gas separation cavity;
the fine separation piece is arranged in the oil-gas separation cavity and divides the oil-gas separation cavity into a first separation cavity and a second separation cavity, the inlet and the first oil return port are communicated with the first separation cavity, and the outlet and the second oil return port are communicated with the second separation cavity;
the rough separation piece is arranged in the first separation cavity, the oil-gas mixture entering the first separation cavity from the inlet is suitable for flowing out of the first oil return port after being separated by the rough separation piece, the separated oil flows out of the first oil return port, the gas separated out of the oil-gas mixture after being separated by the fine separation piece is discharged from the outlet, and the separated oil flows out of the first oil return port and/or the second oil return port.
2. The oil and gas separation device of claim 1, wherein the fine separator comprises:
the fine separation plate is provided with a plurality of through holes;
and the filtering piece is arranged on one side surface of the fine separation plate, which is adjacent to the center of the second separation cavity, and the filtering piece covers the plurality of through holes on the fine separation plate.
3. The oil and gas separation device of claim 2, wherein the fine separator further comprises:
the mounting panel is established the neighbouring of smart separation plate one side at second separation chamber center, filter and press from both sides and establish smart separation plate with between the mounting panel.
4. The oil-gas separation device according to claim 2, wherein an extension part extending upwards is arranged on the bottom wall of the oil-gas separation chamber, a first groove is formed on the top surface of the extension part, and the lower end of the fine separation plate is fitted in the first groove.
5. The oil-gas separation device according to claim 4, wherein the fine separation plate includes a first plate portion and a second plate portion, the second plate portion extends outward from an outer periphery of the first plate portion, the first plate portion is formed with a plurality of the through holes, both sides in a thickness direction of the first plate portion protrude from both sides in the thickness direction of the second plate portion, a part of the second plate portion fits in the first groove, and a lower surface of the first plate portion abuts against a top surface of the extension portion.
6. The oil-gas separation device according to claim 2, wherein a second groove is formed on the top wall in the oil-gas separation chamber, and a protruding part protruding upwards is arranged on the top of the fine separation plate and is fitted in the second groove.
7. The oil-gas separation device according to any one of claims 1 to 6, wherein the coarse separation member is a coarse separation baffle, the coarse separation member is directly opposite to the inlet, and an orthographic projection of the inlet on the coarse separation member is positioned on the coarse separation member.
8. The oil and gas separation device of any one of claims 1-6, wherein the body comprises:
a housing, a top of which is open, the inlet being formed on a sidewall of the housing, the first oil return port and the second oil return port being formed at a bottom of the housing to be spaced apart from each other;
the lid, the lid is established the top of casing, the lid with the casing is injectd jointly the oil-gas separation chamber, the rough separation piece with the fine separation piece is all established the bottom of lid, the export forms on the lid.
9. An engine, comprising:
a timing cover;
the oil-gas separation device according to any one of claims 1 to 8, which is provided in the timing cover.
10. A vehicle characterized by comprising the engine according to claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021925380.7U CN213478427U (en) | 2020-09-04 | 2020-09-04 | Oil-gas separation device and engine and vehicle with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021925380.7U CN213478427U (en) | 2020-09-04 | 2020-09-04 | Oil-gas separation device and engine and vehicle with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213478427U true CN213478427U (en) | 2021-06-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021925380.7U Active CN213478427U (en) | 2020-09-04 | 2020-09-04 | Oil-gas separation device and engine and vehicle with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213478427U (en) |
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2020
- 2020-09-04 CN CN202021925380.7U patent/CN213478427U/en active Active
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