Oil tank of oil-gas separator and vehicle

Abstract

The utility model provides an oil-gas separator oil tank and a vehicle. The oil-gas separator oil tank comprises a tank body, an oil-gas separation cavity is formed in the tank body, an oil inlet channel, an oil outlet channel and an exhaust channel which communicate with the oil-gas separation cavity are further arranged on the wall body of the tank body, and the exhaust channel, the oil inlet channel and the oil outlet channel are sequentially arranged at intervals from top to bottom; the oil inlet channel comprises an inlet formed in the outer wall face of the tank body and an outlet formed in the inner wall face of the tank body, and the flow area of the inlet in the oil inlet channel is smaller than that of the outlet. The oil inlet channel of the oil tank of the oil-gas separator is trumpet-shaped, so that the separation effect of oil gas and oil liquid in engine oil flowing back to the oil tank of the oil-gas separator is improved, and the problem that a crankcase ventilation system has a failure risk is solved.

Description

Technical Field

[0001] The present application relates to the technical field of lubrication systems, and more specifically, to an oil tank of an oil-gas separator and a vehicle. Background Art

[0002] Vehicles are generally equipped with an engine lubrication system to lubricate the engine oil. Currently, there are two types of engine lubrication systems: wet lubrication systems and dry lubrication systems. However, some vehicles with better performance may have extreme operating conditions (such as rapid acceleration and deceleration, sharp turns, etc.). At this time, the wet lubrication system cannot meet the oil return requirements under extreme operating conditions. Therefore, a dry lubrication system is usually used.

[0003] However, the dry lubrication system and the oil tank are poorly matched, that is, the lubricating oil that flows back to the oil tank after lubrication by the dry lubrication system does not consider the problem of oil-gas separation, resulting in a high oil-gas mixture concentration in the oil tank, which may cause the crankcase ventilation system on the upper part of the engine to be at risk of failure. Utility Model Content

[0004] The present application provides an oil tank and a vehicle of an oil-gas separator, wherein the oil inlet passage of the oil tank of the oil-gas separator is trumpet-shaped, thereby improving the separation effect of oil gas and oil liquid in the engine oil returning to the oil tank of the oil-gas separator, and avoiding the risk of failure of the crankcase ventilation system.

[0005] In a first aspect, an oil tank of an oil-gas separator is provided, which includes a tank body, an oil-gas separation chamber is arranged in the tank body, and an oil inlet channel, an oil outlet channel and an exhaust channel are also arranged on the wall of the tank body, all of which are connected to the oil-gas separation chamber, and the exhaust channel, the oil inlet channel and the oil outlet channel are arranged in sequence from top to bottom; the oil inlet channel includes an inlet on the outer wall surface of the tank body and an outlet arranged on the inner wall surface of the tank body, wherein the flow area of ​​the inlet in the oil inlet channel is smaller than the flow area of ​​the outlet.

[0006] In the above technical solution, the oil inlet channel is trumpet-shaped as a whole, with a small inlet and a large outlet, so that the oil gas and oil liquid entering the oil inlet channel can be initially separated under the action of gravity, that is, the oil liquid will flow along the lowest point of the oil inlet channel under the action of gravity and fall into the lower part of the oil-gas separation chamber, and the oil gas will flow along the highest point of the oil inlet channel and enter the upper part of the oil-gas separation chamber. In this way, the separation effect of oil gas and oil liquid in the engine oil returned to the oil-gas separator oil tank is improved, thereby avoiding the risk of failure of the crankcase ventilation system, and thus ensuring the reliability of the engine.

[0007] In combination with the first aspect, in some possible implementations, the tank body includes a main body and a joint part, an oil-gas separation chamber is provided inside the main body, the joint part is connected to the wall of the main body, and the oil inlet channel is formed in the wall of the main body and inside the joint part.

[0008] In the above technical solution, the joint part can seal the oil inlet channel in the tank body to avoid a certain gap between the trumpet-shaped oil inlet channel and the wall of the tank body, which may cause the oil and gas in the separated engine oil to enter these gaps, that is, there is a problem of oil and gas leakage.

[0009] In combination with the first aspect and the above-mentioned implementation methods, in some possible implementation methods, the joint portion protrudes from the outer wall surface of the main body portion, the inlet of the oil inlet channel is arranged on the outer wall surface of the main body portion, the outlet of the oil inlet channel is arranged on the inner wall surface of the main body portion, and the direction of the outlet is arranged along the tangent direction of the inner wall surface of the main body portion.

[0010] In combination with the first aspect and the above-mentioned implementations, in some possible implementations, the outlet of the oil inlet channel is arranged in an elliptical shape, and the major axis extension direction of the outlet is arranged parallel to the axial direction of the main body.

[0011] In the above technical solution, by setting the major axis extension direction of the elliptical outlet parallel to the axial direction of the main body, the oil can flow slowly along the cavity wall of the oil-gas separation cavity after passing through the outlet, so as to avoid the problem of oil-gas and oil-liquid mixing in the oil tank of the oil-gas separator due to excessive gravity and excessive flow rate, which further ensures the separation effect of the oil inlet channel. At the same time, the major axis extension direction of the outlet is set parallel to the axial direction of the main body, so that the height difference between the upper part of the oil inlet channel and the lower part of the oil inlet channel is large, further improving the separation effect of oil-gas and oil-liquid in the engine oil.

[0012] In combination with the first aspect and the above implementations, in certain possible implementations, the lowest point of the oil outlet channel is higher than the bottom wall of the oil-gas separation chamber.

[0013] In the above technical solution, impurities mixed in the oil that falls into the bottom wall of the oil-gas separation chamber will be blocked by the wall formed by the height difference, thereby playing a role in intercepting and depositing, avoiding the problem that impurities mixed in the oil flow out from the oil outlet channel and finally flow into the engine moving parts to participate in lubrication, causing abnormal wear of the engine moving parts and affecting the service life of the moving parts, thereby ensuring the service life of the engine oil.

[0014] In combination with the first aspect and the above-mentioned implementation methods, in some possible implementation methods, an annular rib is also included; the annular rib is connected to the main body and protrudes from the cavity wall of the oil-gas separation cavity, and the annular rib is located below the oil inlet channel and above the oil outlet channel.

[0015] In the above technical solution, the annular rib can block the impurities falling from the oil inlet channel. In this way, by setting the annular rib and designing a height difference between the lowest point of the oil outlet channel and the bottom wall of the oil-gas separation chamber, the impurities mixed in the oil can be blocked to avoid the impurities mixed in the oil flowing out from the oil outlet channel and finally flowing into the engine moving parts to participate in lubrication, causing abnormal wear of the engine moving parts and affecting the service life of the moving parts, thereby ensuring the service life of the engine oil.

[0016] In combination with the first aspect and the above-mentioned implementation methods, in some possible implementation methods, the main body includes a first tank body and a second tank body, the first tank body is provided with an oil inlet channel, the second tank body is connected to the lower part of the first tank body and is provided with an oil outlet channel, and the inner diameter of the first tank body is larger than the inner diameter of the second tank body; the wall surface of the first tank body facing the second tank body and the wall surface of the second tank body facing the first tank body are respectively provided with a plurality of one-to-one corresponding connecting holes; the oil tank of the oil-gas separator also includes a flange, the flange includes a flange body and a plurality of threaded columns arranged on the flange body, the plurality of threaded columns correspond one-to-one to the plurality of connecting holes, and are connected to the annular rib as a whole.

[0017] In the above technical solution, the first tank body and the second tank body are connected under the fixing effect of bolts and other fasteners, and the connection is strong and easy to disassemble and assemble. At the same time, the flange is set to avoid the problem of bolt wear caused by long-term contact between the bolt and the oil, and the multiple threaded columns and the annular ribs are connected as a whole, which plays a role in strengthening the connection, improves the connection stiffness between each threaded column and the oil tank of the oil and gas separator, avoids the problem of fracture failure, and ensures the connection reliability of the first tank body and the second tank body.

[0018] In combination with the first aspect and the above-mentioned implementations, in some possible implementations, an annular baffle is further included, which is connected to the main body and protrudes from the cavity wall of the oil-gas separation cavity and is located below the oil inlet channel and above the oil outlet channel.

[0019] In the above technical solution, when the vehicle is under extreme operating conditions and the oil in the oil tank of the oil-gas separator shakes, the shaking oil will be blocked by the annular baffle and fall down, that is, the space for the oil to shake becomes smaller, thereby avoiding large-scale shaking of the oil in the oil tank of the oil-gas separator, thereby affecting the oil discharge effect of the oil tank of the oil-gas separator, thereby ensuring the oil discharge effect of the oil tank of the oil-gas separator.

[0020] In combination with the first aspect and the above-mentioned implementation methods, in some possible implementation methods, it also includes a separation baffle connected to the tank body and located in the oil-gas separation chamber, the separation baffle is located above the oil inlet channel, and the oil-gas mixture flows through the separation baffle and is discharged through the exhaust channel.

[0021] In the above technical scheme, by setting a separation baffle, the separation effect of the oil-gas separation oil tank on the engine oil is further improved. In this way, through the double separation of the engine oil, the separation effect of the oil-gas separation oil tank is improved, and the risk of failure of the crankcase ventilation system is avoided, thereby ensuring the reliability of the engine, and further ensuring the reliability of the vehicle using the engine and lubrication system.

[0022] In a second aspect, an embodiment of the present application provides a vehicle, including an engine and a lubrication system connected to the engine, the lubrication system including an oil tank of the oil-gas separator described in any optional manner of the first aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of a lubrication system provided in an embodiment of the present application;

[0024] Figure 2 It is a schematic cross-sectional structure diagram of an oil tank of an oil-gas separator provided in an embodiment of the present application;

[0025] Figure 3 It is a structural schematic diagram of an oil inlet channel provided in an embodiment of the present application;

[0026] Figure 4 It is a structural schematic diagram of an oil tank of an oil-gas separator provided in an embodiment of the present application;

[0027] Figure 5 It is a structural schematic diagram of another oil tank of an oil-gas separator provided in an embodiment of the present application;

[0028] Figure 6 It is a structural schematic diagram of another oil tank of an oil-gas separator provided in an embodiment of the present application;

[0029] Figure 7 It is a schematic diagram of the exploded structure of an oil tank of an oil-gas separator provided in an embodiment of the present application;

[0030] Figure 8 This is a schematic diagram of the exploded structure of another oil tank of an oil-gas separator provided in an embodiment of the present application;

[0031] Fig. 9 It is a partial structural schematic diagram of an oil tank of an oil-gas separator provided in an embodiment of the present application;

[0032] Fig.10 This is a schematic diagram of the exploded structure of another oil tank of an oil-gas separator provided in an embodiment of the present application.

[0033] Among them, the reference numerals in the figure are:

[0034] 1. Oil tank of oil-gas separator; 11. Tank body; 11a. Oil-gas separation chamber; 11b. Oil drain hole; 111. Oil inlet channel; 111a. Inlet; 111b. Outlet; 112. Oil outlet channel; 113. Exhaust channel; 114. Main body; 1141. First tank body; 1142. Second tank body; 115. Joint; 115a. Through hole; 12. Annular rib; 13. Flange; 131. Flange body; 132. Threaded column; 14. Annular baffle; 15. Separation baffle; 16. Screw plug; 2. Dry oil sump; 3. Combined oil pump; 4. Oil supply pipe; 5. Oil cooler; 6. Oil return pipe; 7. Oil filter. DETAILED DESCRIPTION

[0035] The technical solution in the present application will be described clearly and in detail below in conjunction with the accompanying drawings. In the description of the embodiments of the present application, unless otherwise specified, " / " means or, for example, A / B can mean A or B: "and / or" in the text 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 mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, in the description of the embodiments of the present application, "multiple" means two or more than two.

[0036] In the following, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as suggesting or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features.

[0037] With the advancement of science and technology, the rapid development of the vehicle industry and the improvement of social living standards, people have put forward more requirements for the use of vehicles. For example, vehicles are generally equipped with an engine lubrication system to lubricate the oil in the engine. At present, the engine lubrication system usually has two types: wet lubrication system and dry lubrication system.

[0038] A wet lubrication system usually includes an oil pan and an oil pump. When the wet lubrication system is in operation, the oil pump will deliver the oil in the oil pan to the moving parts and hydraulic components of the engine. The oil after lubrication will quickly return to the oil pan, so that the oil in the engine can be continuously circulated in the moving parts and hydraulic components through the oil pump. However, some vehicles with better performance have an acceleration greater than 1g under extreme operating conditions (such as rapid acceleration and deceleration, sharp turns, etc.). When a wet lubrication system is used, it may be difficult for the oil to return (i.e., the oil in the oil pan deviates to the side, causing the oil pump to suck empty), which affects the normal operation of the wet lubrication system and causes the engine to be damaged.

[0039] Therefore, in order to make the center of gravity of the engine and the lubrication system meet the special needs of the vehicle under extreme operating conditions, a dry lubrication system is usually used in the relevant technology. Exemplarily, the dry lubrication system in the relevant technology usually includes a dry oil pan, a combined oil pump and an oil tank. It is worth noting that the dry oil pan does not have an oil storage function, and the combined oil pump usually includes at least two oil pumps, that is, at least one return oil pump and one oil supply pump. When the dry lubrication system is in operation, the oil involved in the working of the moving parts and hydraulic components falls back to the dry oil pan, and is quickly sucked away by the return oil pump in the combined oil pump, and then flows to the oil tank for storage. The oil stored in the oil tank is sucked away by the oil supply pump in the combined oil pump, and then flows to the moving parts and hydraulic components of the engine. However, the dry lubrication system and the oil tank are poorly matched, that is, the lubricating oil that flows back to the oil tank after lubrication by the dry lubrication system does not take into account the problem of oil-gas separation, resulting in a high oil-gas mixture concentration in the oil tank, which may cause the crankcase ventilation system on the upper part of the engine to have a risk of failure and even affect the normal use of the engine.

[0040] To this end, an embodiment of the present application provides an oil-gas separator oil tank and a vehicle, wherein the oil inlet channel of the oil-gas separator oil tank is trumpet-shaped, thereby improving the separation effect of oil gas and oil liquid in the engine oil flowing back to the oil-gas separator oil tank, and avoiding the risk of failure of the crankcase ventilation system.

[0041] The following is an exemplary description of the oil tank and vehicle of the oil-gas separator provided in the embodiment of the present application in conjunction with the drawings.

[0042] The vehicle provided in the embodiment of the present application may include an engine and a lubrication system connected to the engine, wherein: Figure 1 As shown, the lubrication system may include an oil-gas separator oil tank 1, a dry oil sump 2 and a combined oil pump 3. The oil-gas separator oil tank 1 is connected to the dry oil sump 2. The return oil pump in the combined oil pump 3 can absorb the oil falling back to the dry oil sump 2 and transport it to the oil-gas separator oil tank 1. The oil-gas separator oil tank 1 separates the oil and gas into oil gas and oil liquid. The oil supply pump in the combined oil pump 3 absorbs the oil liquid in the oil and transports it to the engine moving parts and hydraulic components, etc., to complete the lubrication of the oil.

[0043] Among them, Figure 2As shown, the oil tank 1 of the oil-gas separator includes a tank body 11, and an oil-gas separation chamber 11a may be formed in the tank body 11. The wall of the tank body 11 is also provided with an oil inlet channel 111, an oil outlet channel 112 and an exhaust channel 113, all of which are connected to the oil-gas separation chamber 11a. The exhaust channel 113, the oil inlet channel 111, and the oil outlet channel 112 are sequentially arranged at intervals from top to bottom. Here, it can be understood that the return oil pump can transport the engine oil to the oil tank 1 of the oil-gas separator through the oil inlet channel 111, and the oil and gas separated by the oil tank 1 of the oil-gas separator are discharged through the exhaust channel 113, and the oil supply pump can absorb the oil separated by the oil tank 1 of the oil-gas separator through the oil outlet channel 112.

[0044] In order to improve the separation effect of oil gas and oil liquid in the engine oil returned to the oil gas separator oil tank 1, in one example, as Figure 2 As shown, the oil inlet channel 111 may include an inlet 111a on the outer wall of the tank body 11 and an outlet 111b arranged on the inner wall of the tank body 11. In order to improve the separation effect of oil gas and oil liquid, as shown in FIG. Figure 3 As shown, the flow area of ​​the inlet 111a in the oil inlet channel 111 is smaller than the flow area of ​​the outlet 111b, that is, the oil inlet channel 111 is in the shape of a trumpet as a whole, and the inlet 111a is small and the outlet 111b is large, so that the oil gas and oil liquid entering the oil inlet channel 111 are conveniently separated under the action of gravity, that is, the oil liquid will flow along the lowest point of the oil inlet channel 111 under the action of gravity and fall into the lower part of the oil-gas separation chamber 11a, and the oil gas will flow along the highest point of the oil inlet channel 111 and enter the upper part of the oil-gas separation chamber 11a. In this way, the oil inlet channel 111 of the oil-gas separator oil tank 1 is set to be trumpet-shaped, which improves the separation effect of the oil gas and oil liquid in the engine oil flowing back to the oil-gas separator oil tank 1, thereby avoiding the problem of failure risk of the crankcase ventilation system, and thus ensuring the reliability of the engine.

[0045] Optionally, the inlet 111a to the outlet 111b of the oil inlet channel 111 can be gradually enlarged or can be increased in a step-wise manner. This can be set according to actual needs, and this application does not impose any specific restrictions.

[0046] Due to the special trumpet-shaped design of the oil inlet channel 111 as a whole, there may be a certain gap between its outer wall and the wall of the tank body 11. In order to avoid a certain gap between the trumpet-shaped oil inlet channel 111 and the wall of the tank body 11, the oil and gas in the separated engine oil may enter these gaps, that is, there is a problem of oil and gas leakage. In an example, Figure 4As shown, the tank body 11 may include a main body 114 and a joint 115, an oil-gas separation chamber 11a is formed inside the main body 114, the joint 115 is connected to the wall of the main body 114, an oil inlet passage 111 is formed inside the wall of the main body 114 and the joint 115, and the oil inlet passage 111 may be connected to the oil return pump in the combined oil pump 3 through the joint 115. In this way, the joint 115 may seal the oil inlet passage 111 in the tank body 11 to avoid a certain gap between the trumpet-shaped oil inlet passage 111 and the wall of the tank body 11, which may cause the oil and gas in the separated oil to enter these gaps, that is, there is a problem of oil and gas leakage.

[0047] Optional, such as Figure 5 As shown, the main body 114 can be a cylindrical tube, and the joint part 115 can be a component provided with a through hole 115a. Part of the oil inlet channel 111 is formed on the wall of the cylindrical tube, and part is located inside the joint part 115. The inlet 111a of the oil inlet channel 111 is arranged corresponding to the through hole 115a on the joint part 115. In this way, the engine oil will flow into the inlet 111a of the oil inlet channel 111 through the through hole 115a on the joint part 115.

[0048] Optionally, the joint portion 115 may be flush with the outer wall surface of the main body portion 114, or may protrude from the outer wall surface of the main body portion 114. For example, Figure 5 As shown, the joint part 115 protrudes from the outer wall surface of the main body 114. At this time, the inlet 111a of the oil inlet channel 111 can be set on the outer wall surface of the main body 114, and the outlet 111b of the oil inlet channel 111 can be set on the inner wall surface of the main body 114, and the outlet 111b is set along the tangent direction of the inner wall surface of the main body 114. Here, it is worth noting that in order to simplify the manufacturing process, the main body 114 and the joint part 115 can be an integrated design, or they can be designed separately and then assembled. This application does not make any specific restrictions on this.

[0049] In order to further ensure the separation effect of the oil inlet channel 111, optionally, as Figure 1 and Figure 2As shown, the outlet 111b of the oil inlet channel 111 can be set in an elliptical shape, and the major axis extension direction of the outlet 111b is set parallel to the axial direction of the main body 114, so that the oil separated by the oil inlet channel 111 is located in the bottom elliptical arc under the action of gravity. Since the major axis extension direction of the outlet 111b is parallel to the axial direction of the main body 114 at this time, the oil located in the bottom elliptical arc will flow out of the outlet 111b under the guidance of the trumpet shape, and flow along the cavity wall of the oil-gas separation cavity 11a, and flow slowly, so as to prevent the oil from directly flowing into the oil-gas separation cavity 11a through the outlet 111b. Due to the excessive gravity, it contacts the oil deposited at the bottom of the oil-gas separation cavity 11a to generate splashed oil, and the splashed oil may be mixed with the separated oil and gas again, resulting in the problem of oil and gas mixing in the oil tank 1 of the oil-gas separator, affecting the separation effect of the oil tank 1 of the oil-gas separator. In this way, by setting the long axis extension direction of the elliptical outlet 111b parallel to the axial direction of the main body 114, the oil can flow along the cavity wall of the oil-gas separation cavity 11a after passing through the outlet 111b, and flow slowly, so as to avoid the problem of oil-gas and oil-liquid mixing in the oil tank 1 of the oil-gas separator due to excessive gravity and excessive flow rate, that is, further ensuring the separation effect of the oil inlet channel 111. At the same time, the long axis extension direction of the outlet 111b is set parallel to the axial direction of the main body 114, so that the height difference between the upper part of the oil inlet channel 111 and the lower part of the oil inlet channel 111 is large, further improving the separation effect of oil-gas and oil-liquid in the engine oil.

[0050] Optionally, the outlet 111b of the oil inlet channel 111 may be flush with the wall of the oil-gas separation chamber 11a, or may be suspended above the wall of the oil-gas separation chamber 11a by a certain height, for example, 20 mm (millimeter) to 30 mm, and the present application does not impose any specific limitation on this.

[0051] In summary, by setting the oil inlet channel 111 of the oil-gas separator oil tank 1 to be trumpet-shaped, the oil and gas in the engine oil flowing back to the oil-gas separator oil tank 1 can enter the upper part of the oil-gas separation chamber 11a, and the oil liquid falls into the lower part of the oil-gas separation chamber 11a under the action of gravity, so as to improve the separation effect of the oil and gas and the oil liquid in the engine oil, thereby avoiding the risk of failure of the crankcase ventilation system and ensuring the reliability of the engine.

[0052] After separation, there may still be an oil-gas mixture in the oil and gas that enters the upper part of the oil-gas separation chamber 11a. In order to further separate the separated oil and gas to further improve the separation effect, in one example, the oil-gas separator oil tank 1 may also include a separation baffle 15, which is connected to the tank body 11 and is located in the oil-gas separation chamber 11a. After the oil-gas mixture separated by the oil inlet channel 111 flows through the separation baffle 15, the oil and liquid in the oil-gas mixture will be blocked by the separation baffle 15 and eventually fall into the lower part of the oil-gas separation chamber 11a to further separate the oil and gas and the oil in the oil-gas mixture. The separated oil and gas are finally discharged through the exhaust channel 113. In this way, the separation effect of the oil and gas and the oil in the engine oil is further improved by setting the separation baffle 15, avoiding the risk of failure of the crankcase ventilation system, thereby ensuring the reliability of the engine.

[0053] Optionally, the separation baffle 15 may be disposed above the outlet 111b of the oil inlet passage 111, or may be disposed at the upper portion of the oil-gas separation chamber 11a. Figure 6 As shown, the separation baffle 15 can be arranged at the upper part of the oil-gas separation chamber 11a. In order to further improve the separation effect of the separation baffle 15, as shown in FIG. Figure 7 As shown, the oil tank 1 of the oil-gas separator may include a plurality of separation baffles 15, and the plurality of separation baffles 15 are arranged in an array to form a "honeycomb" shape. For example, 16 baffles may be provided to form a 4*4 array, that is, 4 rows and 4 columns are arranged in the upper part of the oil-gas separation chamber 11a to improve the separation effect of the oil-gas and oil liquid in the oil-gas mixture.

[0054] Optionally, the oil tank 1 of the oil-gas separator may also include a third tank body, and the separation baffle 15 may be placed inside the third tank body, for example, on the top or side wall of the third tank body, and the third tank body may be detachably connected to the top of the first tank body 1141.

[0055] In this way, by setting the oil inlet channel 111 to be trumpet-shaped and setting the separation baffle 15, double separation of the engine oil is achieved, the separation effect of the oil-gas separation oil tank 1 is improved, and the risk of failure of the crankcase ventilation system is avoided, thereby ensuring the reliability of the engine and further ensuring the reliability of the vehicle using the engine and lubrication system.

[0056] The oil returned from the oil return pump to the oil-gas separator oil tank 1 is usually mixed with some impurities. These impurities will fall into the lower part of the oil-gas separation chamber 11a together with the oil under the action of gravity, which may cause the impurities to be mixed with the oil and flow out from the oil outlet channel 112 and finally flow into the engine moving pair. In this way, the impurities participating in the lubrication may cause abnormal wear of the engine moving pair, affecting the service life of the moving pair, and at the same time, it will also affect the service life of the engine oil. For this reason, in one example, Figure 6 As shown, the lowest point of the oil outlet channel 112 can be higher than the bottom wall of the oil-gas separation chamber 11a, that is, there is a height difference designed between the lowest point of the oil outlet channel 112 and the bottom wall of the oil-gas separation chamber 11a. For example, the height difference can be 5mm to 10mm. In this way, impurities mixed in the oil falling into the bottom wall of the oil-gas separation chamber 11a will be blocked by the wall formed by the height difference, thereby playing a role in intercepting and depositing, avoiding the problem that impurities mixed in the oil flow out from the oil outlet channel 112 and finally flow into the engine moving pair to participate in lubrication, causing abnormal wear of the engine moving pair and affecting the service life of the moving pair, thereby ensuring the service life of the engine oil.

[0057] In order to facilitate the discharge of impurities deposited on the bottom wall of the oil-gas separation chamber 11a and to facilitate the replacement of engine oil when the vehicle reaches the maintenance mileage, in one example, Figure 8 As shown, the bottom wall of the oil-gas separation chamber 11a is provided with an oil drain hole 11b. When impurities do not need to be discharged and the engine oil does not need to be replaced, the oil drain hole can be blocked by a screw plug 16. When impurities need to be discharged and the engine oil needs to be replaced, the screw plug 16 can be removed to allow the impurities to be discharged together with the engine oil.

[0058] In order to further improve the effect of intercepting and depositing impurities, in one example, the oil tank 1 of the oil-gas separator can also be provided with an annular rib 12, which is connected to the main body 114 and protrudes from the wall surface of the oil-gas separation chamber 11a, and the annular rib 12 is located below the oil inlet channel 111 and above the oil outlet channel 112, so as to block the impurities falling from the oil inlet channel 111. In this way, by designing a height difference between the lowest point of the annular rib 12 and the oil outlet channel 112 and the bottom wall of the oil-gas separation chamber 11a, the impurities mixed in the oil can be blocked to avoid the impurities mixed in the oil flowing out of the oil outlet channel 112 and finally flowing into the engine moving pair to participate in lubrication, causing abnormal wear of the engine moving pair and affecting the service life of the moving pair, thereby ensuring the service life of the engine oil.

[0059] Here, it is worth noting that the tank body 11 in the present application can be an integrated structure, or a component that is designed and manufactured separately and then assembled. For example, Figure 6As shown, the main body 114 may include a first tank body 1141 and a second tank body 1142, wherein the first tank body 1141 is provided with an oil inlet passage 111, the second tank body 1142 is connected to the lower part of the first tank body 1141, and is provided with an oil outlet passage 112, and the inner diameter of the first tank body 1141 is greater than the inner diameter of the second tank body 1142. At this time, the tank body 11 is funnel-shaped as a whole. In order to facilitate the disassembly and assembly of the first tank body 1141 and the second tank body 1142, a plurality of one-to-one corresponding connecting holes are respectively provided on the wall surface of the first tank body 1141 facing the second tank body 1142 and the wall surface of the second tank body 1142 facing the first tank body 1141, which can be penetrated by fasteners such as bolts in the two one-to-one corresponding connecting holes, so that the first tank body 1141 and the second tank body 1142 are connected under the fixing effect of fasteners such as bolts, and the connection is strong and easy to disassemble and assemble.

[0060] Since one end of a fastener such as a bolt may protrude from the first tank 1141, in order to prevent the bolt from being worn due to long-term contact with the engine oil, further, as Fig. 9 As shown, the oil tank 1 of the oil-gas separator may further include a flange 13, and the flange 13 may include a flange body 131 and a plurality of threaded columns 132 disposed on the flange body 131, and the plurality of threaded columns 132 correspond to the plurality of connection holes one by one, and are connected as a whole with the annular rib 12. In this way, the problem of bolt wear caused by long-term contact between the bolt and the engine oil is avoided by providing the flange 13, and the plurality of threaded columns 132 are connected as a whole with the annular rib 12, which plays a role in strengthening the connection, improves the connection stiffness between each threaded column 132 and the oil tank 1 of the oil-gas separator, avoids the problem of fracture failure, and ensures the connection reliability of the first tank body 1141 and the second tank body 1142.

[0061] In order to prevent the oil in the oil tank 1 of the oil-gas separator from shaking in a large range under the extreme use conditions of the vehicle, thereby affecting the oil discharge effect of the oil tank 1 of the oil-gas separator, in one example, Fig.10 As shown, an annular baffle 14 can also be provided in the oil tank 1 of the oil-gas separator. The annular baffle 14 is connected to the main body 114 and protrudes from the cavity wall of the oil-gas separation cavity 11a, and is located below the oil inlet channel 111 and above the oil outlet channel 112. In this way, when the oil in the oil tank 1 of the oil-gas separator shakes under the extreme use conditions of the vehicle, the shaking oil will be blocked by the annular baffle 14 and fall, that is, the space for the oil to shake becomes smaller, avoiding the problem that the oil in the oil tank 1 of the oil-gas separator shakes in a large range, thereby affecting the oil discharge effect of the oil tank 1 of the oil-gas separator, and ensuring the oil discharge effect of the oil tank 1 of the oil-gas separator.

[0062] Optionally, in order to reduce the center of mass of a vehicle using the oil-gas separator tank 1, the oil-gas separator tank 1 may be disposed outside the engine, and this application does not impose any specific limitation on this.

[0063] like Figure 1 As shown, the lubrication system provided in the embodiment of the present application may also include an oil supply pipe 4, an oil cooler 5, an oil return pipe 6, an oil filter 7, etc., wherein one end of the oil supply pipe 4 is connected to the oil-gas separator oil tank 1, and the other end is connected to the dry oil sump 2, and they may be flange-connected to each other, and one end of the oil return pipe 6 is connected to the oil-gas separator oil tank 1, and the other end is connected to the cylinder block in the vehicle, and they may be flange-connected to each other. The lubrication system provided in the embodiment of the present application may also include other devices, which will not be described in detail in the present application.

[0064] Through the description of the above implementation methods, technical personnel in the relevant field can understand that for the convenience and simplicity of description, only the division of the above-mentioned functional modules is used as an example. In actual applications, the above-mentioned functions can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above.

[0065] In the embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic, for example, the division of modules or units is only a logical function division, and there may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another device, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0066] The above contents are only specific implementation methods of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. An oil tank (1) for an oil-gas separator, characterized in that: The invention comprises a tank body (11), wherein an oil-gas separation chamber (11a) is arranged in the tank body (11), and an oil inlet channel (111), an oil outlet channel (112) and an exhaust channel (113) which are all in communication with the oil-gas separation chamber (11a) are also arranged on the wall of the tank body (11), wherein the exhaust channel (113), the oil inlet channel (111) and the oil outlet channel (112) are arranged in sequence from top to bottom; The oil inlet passage (111) comprises an inlet (111a) on the outer wall surface of the tank body (11) and an outlet (111b) arranged on the inner wall surface of the tank body (11), wherein the flow area of ​​the inlet (111a) in the oil inlet passage (111) is smaller than the flow area of ​​the outlet (111b).

2. The oil tank (1) of the oil-gas separator according to claim 1, characterized in that: The tank body (11) comprises a main body (114) and a joint (115); the oil-gas separation chamber (11a) is arranged inside the main body (114); the joint (115) is connected to the wall of the main body (114); and the oil inlet passage (111) is formed inside the wall of the main body (114) and the joint (115).

3. The oil tank (1) of the oil-gas separator according to claim 2, characterized in that: The joint portion (115) protrudes from the outer wall surface of the main body portion (114); the inlet (111a) of the oil inlet passage (111) is arranged on the outer wall surface of the main body portion (114); the outlet (111b) of the oil inlet passage (111) is arranged on the inner wall surface of the main body portion (114); and the outlet (111b) is arranged along a tangent direction of the inner wall surface of the main body portion (114).

4. The oil tank (1) of the oil-gas separator according to claim 2, characterized in that: The outlet (111b) of the oil inlet channel (111) is arranged in an elliptical shape, and the major axis extension direction of the outlet (111b) is arranged parallel to the axial direction of the main body (114).

5. The oil tank (1) of the oil-gas separator according to any one of claims 1 to 4, characterized in that: The lowest point of the oil outlet channel (112) is higher than the bottom wall of the oil-gas separation chamber (11a).

6. The oil tank (1) of the oil-gas separator according to any one of claims 2 to 4, characterized in that: Also includes an annular rib (12); The annular rib (12) is connected to the main body (114) and protrudes from the cavity wall surface of the oil-gas separation cavity (11a), and the annular rib (12) is located below the oil inlet channel (111) and above the oil outlet channel (112).

7. The oil tank (1) of the oil-gas separator according to claim 6, characterized in that: The main body (114) comprises a first tank body (1141) and a second tank body (1142), the first tank body (1141) being provided with the oil inlet passage (111), the second tank body (1142) being connected to the lower part of the first tank body (1141) and being provided with the oil outlet passage (112), and the inner diameter of the first tank body (1141) being greater than the inner diameter of the second tank body (1142); A plurality of one-to-one corresponding connection holes are respectively provided on the wall surface of the first tank body (1141) facing the second tank body (1142) and on the wall surface of the second tank body (1142) facing the first tank body (1141); The oil tank (1) of the oil-gas separator also includes a flange (13), wherein the flange (13) includes a flange body (131) and a plurality of threaded columns (132) arranged on the flange body (131), wherein the plurality of threaded columns (132) correspond to the plurality of connecting holes one by one and are connected to the annular rib (12) as a whole.

8. The oil tank (1) of the oil-gas separator according to claim 6, characterized in that: It also comprises an annular baffle (14), which is connected to the main body (114) and protrudes from the cavity wall surface of the oil-gas separation cavity (11a), and is located below the oil inlet channel (111) and above the oil outlet channel (112).

9. The oil tank (1) of the oil-gas separator according to any one of claims 1 to 4, characterized in that: It also comprises a separation baffle (15) connected to the tank body (11) and located in the oil-gas separation chamber (11a); the separation baffle (15) is located above the oil inlet channel (111); after the oil-gas mixture flows through the separation baffle (15), it is discharged through the exhaust channel (113).

10. A vehicle, characterized in that: It comprises an engine and a lubrication system connected to the engine, wherein the lubrication system comprises an oil tank (1) of the oil-gas separator according to any one of claims 1 to 9.

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