Oil-gas separation device, engine and motorcycle

Abstract

The invention relates to an oil-gas separation device, an engine and a motorcycle. A first through hole, a second through hole and an exhaust hole of a separation mechanism communicate with a breathing chamber; the blocking mechanism is arranged in the breathing chamber and used for changing the flowing direction of the oil-gas mixture in the breathing chamber so that engine oil and gas in the oil-gas mixture can be separated. When the oil-gas separation device is in an installation and use state, the height of the exhaust hole is larger than that of the second through hole, and the height of the second through hole is larger than that of the first through hole. Compared with the prior art, according to the oil-gas separation device, the first through hole with the lowest relative height is not only used for guiding an oil-gas mixture in the crankcase into the breathing chamber, but also used for guiding engine oil staying in the breathing chamber back into the crankcase, and therefore when the second through hole is blocked due to deposition of impurities, the oil-gas mixture in the crankcase can be prevented from entering the breathing chamber. The oil-gas mixture can still flow to the breathing chamber through the first through hole, and the phenomenon that the pressure in the crankcase is abnormally increased due to the fact that blow-by gas in the crankcase is not smoothly discharged is prevented.

Description

Technical Field

[0001] This application relates to the technical field of motorcycles, and in particular to an oil-gas separator, an engine, and a motorcycle. Background Technology

[0002] During engine operation, some gas in the combustion chamber may leak into the crankcase through parts such as piston rings. This leaked gas has a certain pressure. If it is not discharged in time, it will cause the internal pressure to continue to rise, resulting in a decrease in the sealing performance of the sealing components in the engine and causing potential hazards such as oil leakage.

[0003] To avoid the above problems, the gas in the crankcase is usually vented to the air filter. However, since the crankcase is filled with oil vapor and liquid engine oil, the blow-by gas will mix with the engine oil to form an oil-gas mixture. During the exhaust process, the oil-gas mixture will also enter the air filter, causing an abnormal increase in engine oil consumption, which in turn leads to insufficient lubrication and affects the normal operation of various moving parts of the engine.

[0004] In traditional technology, a labyrinth chamber is typically installed at the gas outlet of the crankcase. This labyrinth chamber separates and traps the oil in the air-fuel mixture, while the blow-by gas enters the air filter. However, impurities in the air-fuel mixture easily accumulate and clog the inlet of the labyrinth chamber, hindering the discharge of blow-by gas from the crankcase. This leads to an abnormal increase in crankcase pressure, which in turn causes a decline in the sealing performance of the engine's sealing components, affecting the engine's reliability. Summary of the Invention

[0005] Therefore, it is necessary to provide an oil-gas separation device, engine, and motorcycle to address the problem that impurities in the oil-gas mixture in traditional technologies tend to accumulate and clog the entrance of the labyrinth cavity, leading to poor blow-by in the crankcase and affecting the reliability of the engine.

[0006] The technical solution is as follows:

[0007] One embodiment provides an oil-gas separation device, comprising:

[0008] The separation mechanism includes a breathing chamber, a first through hole, a second through hole, and an exhaust hole, wherein the first through hole, the second through hole, and the exhaust hole are all connected to the breathing chamber.

[0009] A blocking mechanism is provided in the breathing chamber, and the blocking mechanism is used to change the flow direction of the oil-gas mixture in the breathing chamber so as to separate the oil and gas in the oil-gas mixture;

[0010] When the oil-gas separator is in use, the height of the exhaust port is higher than the height of the second through hole, and the height of the second through hole is higher than the height of the first through hole.

[0011] When the aforementioned oil-gas separator is in use, the oil-gas mixture in the crankcase enters the breather chamber through the relatively low first and second through holes. Under the action of the blocking mechanism, the flow direction of the oil-gas mixture in the breather chamber is changed, causing the relatively denser oil to impact and remain on the inner wall of the separator or the breather chamber due to inertia, while the relatively less dense blow-by gas continues to flow and exits through the relatively high exhaust hole towards the air filter. The oil remaining in the breather chamber flows towards the first through hole under gravity and then flows back through the first through hole. The oil-gas mixture is directed into the crankcase, thus preventing oil from entering the air filter and causing an abnormal increase in oil consumption. Compared with traditional technology, the first through-hole, which has the lowest relative height, is used not only to guide the oil-gas mixture in the crankcase into the breather chamber, but also to guide the oil remaining in the breather chamber back into the crankcase. In this way, when the second through-hole becomes blocked due to the deposition of impurities, the oil-gas mixture can still flow into the breather chamber through the first through-hole, preventing the abnormal increase in crankcase pressure caused by poor blow-by in the crankcase and improving the reliability of engine use.

[0012] In one embodiment, the separation mechanism includes a mounting base, a partition, and a protrusion surrounding the mounting base, the partition being disposed on the protrusion such that the mounting base, the protrusion, and the partition surround and form the breathing chamber.

[0013] In one embodiment, the oil-gas separator has a first side and a second side arranged opposite to each other along its first direction. When the oil-gas separator is in the installation and use state, the height of the second side is higher than the height of the first side. The first through hole is opened in the protrusion and is arranged towards the first side, and the exhaust hole is opened in the protrusion and is arranged towards the second side.

[0014] In one embodiment, the breathing chamber includes a first separation chamber and a second separation chamber. At least a portion of the first separation chamber extends along the first direction. The first through hole and the second through hole are both connected to the first separation chamber. At least a portion of the second separation chamber extends along a second direction of the oil-gas separation device. The second direction intersects the first direction. The second separation chamber is connected to the side of the first separation chamber facing the second side. The exhaust port is connected to the second separation chamber.

[0015] In one embodiment, the protrusion is further provided with a third through hole, which communicates with the second separation cavity and is disposed toward the first side.

[0016] In one embodiment, at least two third through holes are provided, and the at least two third through holes are spaced apart along the second direction.

[0017] In one embodiment, the second through hole is formed in the partition member;

[0018] Or / and, the mounting base is provided with a mounting part, the partition is provided with a mating part, and the mounting part is assembled with the mating part.

[0019] In one embodiment, the blocking mechanism includes a first blocking member and a second blocking member, the first blocking member extending along a first direction of the oil-gas separator, and the second blocking member extending along a second direction of the oil-gas separator, the second direction intersecting the first direction.

[0020] Another embodiment provides an engine including a crankcase, an air filter, and an oil-gas separator as described above, the oil-gas separator being disposed in the crankcase, the first through hole and the second through hole both communicating with the interior of the crankcase, and the air filter communicating with the exhaust port.

[0021] In the aforementioned engine, when the oil-gas separator is in use, the oil-gas mixture in the crankcase enters the breather chamber through the relatively lower first and second through holes. Under the action of the blocking mechanism, the flow direction of the oil-gas mixture in the breather chamber is changed, causing the relatively denser oil to impact and remain on the inner wall of the separator or the breather chamber due to inertia, while the relatively less dense blow-by gas continues to flow and exits through the relatively higher exhaust port towards the air filter. The oil remaining in the breather chamber flows towards the first through hole under gravity and passes through the first through hole... The oil flows back into the crankcase through the orifice, thus preventing oil from entering the air filter and causing an abnormal increase in oil consumption. Compared with traditional technology, in the engine described above, the first through-hole, which has the lowest relative height, is not only used to guide the oil-air mixture in the crankcase into the breather chamber, but also to guide the oil remaining in the breather chamber back into the crankcase. In this way, when the second through-hole becomes blocked due to the deposition of impurities, the oil-air mixture can still flow into the breather chamber through the first through-hole, preventing the abnormal increase in crankcase pressure caused by poor blow-by in the crankcase and improving the reliability of the engine.

[0022] Another embodiment provides a motorcycle including a body and an engine as described above, the engine being disposed on the body.

[0023] In the aforementioned motorcycle, when the engine's oil-gas separator is in use, the oil-gas mixture in the crankcase enters the breather chamber through the relatively lower first and second through holes. Under the action of the blocking mechanism, the flow direction of the oil-gas mixture in the breather chamber is changed, causing the relatively denser oil to impact and remain on the inner wall of the separator or the breather chamber due to inertia, while the relatively less dense blow-by gas continues to flow and exits through the relatively higher exhaust port towards the air filter. The oil remaining in the breather chamber flows towards the first through hole under gravity and then through the second through hole... One through-hole returns the oil to the crankcase, thus preventing oil from entering the air filter and causing an abnormal increase in oil consumption. Compared with traditional technology, in the motorcycle described above, the first through-hole, which has the lowest relative height, is not only used to guide the oil-air mixture in the crankcase into the breather chamber, but also to guide the oil remaining in the breather chamber back into the crankcase. In this way, when the second through-hole becomes blocked due to the deposition of impurities, the oil-air mixture can still flow to the breather chamber through the first through-hole, preventing the abnormal increase in crankcase pressure caused by poor blow-by in the crankcase and improving the reliability of the engine. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the structure of the breathing chamber in one embodiment of this application.

[0026] Figure 2 This is a schematic diagram of the structure of the partition after installation in one embodiment of this application.

[0027] Attached image annotations:

[0028] 100. Separation mechanism; 110. Breathing chamber; 111. First separation chamber; 112. Second separation chamber; 121. First through hole; 122. Second through hole; 123. Third through hole; 124. Exhaust port; 130. Mounting base; 131. Mounting part; 140. Partition; 141. Fitting part; 150. Protrusion; 200. Blocking mechanism; 210. First blocking member; 220. Second blocking member; 230. Third blocking member; 310. First side; 320. Second side. Detailed Implementation

[0029] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0030] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0031] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0032] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0033] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0034] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0035] Please see Figure 1 and Figure 2 One embodiment of this application provides an oil-gas separation device, including a separation mechanism 100 and a blocking mechanism 200. The separation mechanism 100 is provided with a breathing chamber 110, a first through hole 121, a second through hole 122, and an exhaust hole 124. The first through hole 121, the second through hole 122, and the exhaust hole 124 are all connected to the breathing chamber 110. The blocking mechanism 200 is disposed in the breathing chamber 110 and is used to change the flow direction of the oil-gas mixture in the breathing chamber 110 so as to separate the oil and gas in the oil-gas mixture. When the oil-gas separation device is in the installation and use state, the height of the exhaust hole 124 is higher than the height of the second through hole 122, and the height of the second through hole 122 is higher than the height of the first through hole 121.

[0036] When the aforementioned oil-gas separator is in use, the oil-gas mixture in the crankcase enters the breather chamber 110 through the relatively lower first through-hole 121 and second through-hole 122. Under the action of the blocking mechanism 200, the flow direction of the oil-gas mixture in the breather chamber 110 is changed, causing the relatively denser oil to impact and remain on the inner wall of the separator 100 or the breather chamber 110 due to inertia, while the relatively less dense blow-by gas continues to flow and flows out through the relatively higher exhaust port 124 and towards the air filter; the oil remaining in the breather chamber 110 flows towards the first through-hole 121 under the action of gravity, and then through the second through-hole 122... The first through-hole 121 returns the oil to the crankcase, thus preventing oil from entering the air filter and causing an abnormal increase in oil consumption. Compared with traditional technology, the first through-hole 121, which has the lowest relative height, is used not only to guide the oil-gas mixture in the crankcase into the breather chamber 110, but also to guide the oil remaining in the breather chamber 110 back into the crankcase. In this way, when the second through-hole 122 is blocked due to the deposition of impurities, the oil-gas mixture can still flow to the breather chamber 110 through the first through-hole 121, preventing the abnormal increase in crankcase pressure caused by poor blow-by in the crankcase and improving the reliability of the engine.

[0037] For illustrative purposes, the blocking mechanism 200 provided in the breathing chamber 110 can be a block, a strip, or a baffle, as long as it can change the flow direction of the oil-gas mixture in the breathing chamber 110, and no specific limitation is made here.

[0038] As a further explanation, channels for the flow of oil-gas mixture are formed between the structures of the blocking mechanism 200 itself or between the blocking mechanism 200 and the cavity wall of the breather chamber 110. These channels combine to form a "maze"-like structure. When the oil-gas mixture flows in the channels, due to the higher density of the oil in the oil-gas mixture, inertia causes it to collide with the cavity wall of the blocking mechanism 200 or the breather chamber 110. Due to its own viscosity, the oil will be adsorbed on the cavity wall of the blocking mechanism 200 or the breather chamber 110. When a large oil droplet is formed, it flows to the first through hole 121 under the action of gravity and eventually flows back into the crankcase, thus avoiding the phenomenon of abnormal increase in oil consumption.

[0039] Understandably, in the above embodiments, the oil-gas separator being in the installation and use state refers to the position of the oil-gas separator when the motorcycle is normally driving in a position parallel to the ground. In this state, the height of the exhaust port 124 is higher than the second through port 122, and the height of the second through port 122 is higher than the first through port 121. The density of the gas in the oil-gas mixture is much smaller than the density of the engine oil, allowing the gas to naturally rise under the action of buoyancy, while the engine oil will sink downwards due to gravity. The first through port 121 can guide the oil-gas mixture to the breather chamber while also serving to return the engine oil to the crankcase. The breather chamber 110 adopts a dual-inlet design (i.e., the first through port 121 and the second through port 122), which effectively avoids the phenomenon of abnormal pressure increase in the crankcase due to the blockage of the inlets causing poor exhaust of the blow-by gas in the crankcase.

[0040] Furthermore, in the above embodiments, the oil and gas in the oil-gas mixture refer to the liquid oil in the crankcase and the blow-by gas in the crankcase, respectively, which will not be elaborated here.

[0041] Please see Figure 1 and Figure 2 In one embodiment, the separation mechanism 100 includes a mounting base 130, a partition 140, and a protrusion 150 surrounding the mounting base 130. The partition 140 is disposed on the protrusion 150 so that the mounting base 130, the protrusion 150, and the partition 140 surround and form a breathing chamber 110.

[0042] The protrusion 150 surrounds the mounting base 130 to form a groove-like structure on the surface of the mounting base 130. The partition 140 is disposed on the protrusion 150 and covers the groove-like structure, thereby surrounding the breather chamber 110 that forms the separation mechanism 100. At least part of the oil in the oil-gas mixture will adhere to the outer protrusion 150 and flow to the first through hole 121 under the action of gravity and flow back into the crankcase. The partition 140 can separate the space inside the crankcase from the breather chamber 110 so as to achieve oil-gas separation of the oil-gas mixture in the breather chamber 110.

[0043] Furthermore, the protrusion 150 can serve as the side wall of the breathing chamber 110, while the platform of the mounting base 130 and the partition 140 can serve as the bottom wall and top wall of the breathing chamber 110, respectively.

[0044] In some embodiments, the mounting base 130 is an engine cylinder head cover, which is positioned at a relatively high position on the engine to allow for the discharge of the air-fuel mixture.

[0045] In some embodiments, the protrusion 150 is a ridge connected end to end to form a groove-like structure on the mounting base 130, and the shape of the partition 140 matches the shape of the ridge to cover the groove-like structure formed by the ridge.

[0046] Optionally, the first through hole 121 and the second through hole 122 can be formed on either the protrusion or the partition 140, as long as the breathing chamber 110 can be connected to the crankcase. No specific limitation is made here.

[0047] exist Figure 1 and Figure 2 In the embodiment shown, the first through hole 121 is formed in the protrusion 150, and the second through hole 122 is formed in the partition 140.

[0048] Please see Figure 1 and Figure 2 In one embodiment, the oil-gas separator has a first side 310 and a second side 320 arranged opposite to each other along its first direction. When the oil-gas separator is in the installation and use state, the height of the second side 320 is higher than the height of the first side 310. The first through hole 121 is opened on the protrusion 150 and is arranged towards the first side 310, and the exhaust hole 124 is opened on the protrusion 150 and is arranged towards the second side 320.

[0049] The first through hole 121 is opened on the protrusion 150 and is positioned towards the first side 310 with a relatively lower height. The exhaust hole 124 is opened on the protrusion 150 and is positioned towards the second side 320 with a relatively higher height, so that the relatively dense oil can flow smoothly back into the crankcase from the first through hole 121, while the relatively less dense blow-by gas flows upward and enters the air filter from the exhaust port, thereby achieving oil-gas separation of the oil-gas mixture.

[0050] For explanation purposes, the first direction of the oil-gas separator is its own width direction, that is... Figure 1 and Figure 2 The direction A in the diagram will not be elaborated upon here.

[0051] Furthermore, when the oil-gas separator is in the installation and use state, the oil-gas separator is in an inclined state so that the height of the second side 320 is higher than the height of the first side 310.

[0052] Please see Figure 1 and Figure 2In one embodiment, the breathing chamber 110 includes a first separation chamber 111 and a second separation chamber 112. At least a portion of the first separation chamber 111 extends along a first direction, and a first through hole 121 and a second through hole 122 are both connected to the first separation chamber 111. At least a portion of the second separation chamber 112 extends along a second direction of the oil-gas separation device, and the second direction intersects with the first direction. The second separation chamber 112 is connected to the side of the first separation chamber 111 facing the second side 320, and an exhaust port 124 is connected to the second separation chamber 112.

[0053] At least a portion of the first separation chamber 111 extends along a first direction, and at least a portion of the second separation chamber 112 extends along a second direction. Thus, when the oil-gas mixture enters the breathing chamber 110 through the first through hole 121 and the second through hole 122, it will flow from the first separation chamber 111 to the second separation chamber 112. During this process, the flow direction of the oil-gas mixture will change from the first direction to the second direction, so as to improve the separation effect of oil and gas in the oil-gas mixture.

[0054] Furthermore, at least a portion of the first separation chamber 111 is configured to extend along a first direction, and at least a portion of the second separation chamber 112 is configured to extend along a second direction, so that the breathing chamber 110 can effectively fill the space on the mounting base 130, increasing the flow distance of the oil-gas mixture in the breathing chamber 110, so as to ensure that the oil and gas in the oil-gas mixture can be fully separated.

[0055] For explanation purposes, the second direction refers to the width direction of the oil-gas separator, that is... Figure 1 and Figure 2 The direction B in the diagram will not be elaborated upon here.

[0056] Furthermore, at least a portion of the first separation chamber 111 extends along a first direction, and at least a portion of the second separation chamber 112 extends along a second direction, so that the breathing chamber 110 has an "L"-shaped structure. This can effectively change the flow direction of the oil-gas mixture, improve the space utilization on the mounting base 130, and facilitate the arrangement of the first through hole 121, the second through hole 122, and the exhaust hole 124. The first through hole 121 and the second through hole 122 are arranged near the side of the first separation chamber 111 away from the second separation chamber 112, and the exhaust hole 124 is arranged near the side of the second separation chamber 112 away from the first separation chamber 111. When the oil-gas separation device is in the installation and use state, the exhaust hole 124 is in a higher position, while the first through hole 121 and the second through hole 122 are in a lower position.

[0057] For illustrative purposes, at least a portion of the first separation chamber 111 extends along a first direction, meaning that at least a portion of the first separation chamber 111 extends in the first direction so that the overall movement direction of the oil-gas mixture is the first direction; at least a portion of the second separation chamber 112 extends along a second direction, meaning that at least a portion of the second separation chamber 112 extends in the second direction so that the overall movement direction of the oil-gas mixture is the second direction, and so on.

[0058] Further, please refer to Figure 1 and Figure 2 The first separation chamber 111 and the second separation chamber 112 are connected by a narrow channel. When the oil-gas mixture passes through the narrow channel, its speed will increase sharply. The gas in the oil-gas mixture has a low density and light weight, and can quickly follow the airflow to accelerate and pass through the narrow channel smoothly. However, the oil has a high density and heavy weight, and cannot accelerate with the airflow at the same speed, resulting in obvious motion lag, so as to achieve the separation of oil and gas.

[0059] Please see Figure 1 and Figure 2 In one embodiment, the protrusion 150 is further provided with a third through hole 123, which communicates with the second separation cavity 112 and is disposed toward the first side 310.

[0060] The third through hole 123, which communicates with the second separation chamber 112, is positioned toward the first side 310, which is at a relatively lower height. This allows the oil in the second separation chamber 112 to flow back into the crankcase through the third through hole 123, which is at a relatively lower height. This ensures that the oil separated in the second separation chamber 112 can also flow back into the crankcase effectively.

[0061] As an explanation, since the second separation chamber 112 is located downstream of the first separation chamber 111, and the extension direction of the second separation chamber 112 is different from that of the first separation chamber 111, the oil separated from the oil-gas mixture in the second separation chamber 112 is difficult to flow back to the crankcase through the first through hole 121. By providing the third through hole 123, the oil separated in the second separation chamber 112 can flow back to the crankcase through the third through hole 123, simplifying the oil return path in the second separation chamber 112 and improving the reliability of oil return.

[0062] Please see Figure 1 and Figure 2 In one embodiment, at least two third through holes 123 are provided, and the at least two third through holes 123 are spaced apart along the second direction.

[0063] This design allows the oil separated at different locations within the second separation chamber 112 to flow back fully into the crankcase, thereby reducing engine oil consumption.

[0064] Furthermore, at least one third through hole 123 is provided on one side of the blocking mechanism 200 in the second separation chamber 112, and at least one third through hole 123 is provided on the other side of the blocking mechanism 200 in the second separation chamber 112, so that the oil separated on both sides of the blocking mechanism 200 can flow back to the crankcase in a timely manner, and the phenomenon of the blocking mechanism 200 preventing the oil from flowing back is avoided.

[0065] Please see Figure 1 and Figure 2 In one embodiment, the second through hole 122 is formed in the partition 140.

[0066] The oil-gas mixture in the crankcase can flow into the breather chamber 110 through the second through hole 122 on the partition 140 for subsequent oil-gas separation.

[0067] Furthermore, the partition 140 is a partition plate, with one side of the partition plate facing the mounting base 130 and the other side of the partition plate facing the inside of the crankcase. The second through hole 122 is opened in the partition plate and connects the inside of the crankcase with the breathing chamber 110 to realize the flow of oil-gas mixture.

[0068] Please see Figure 1 and Figure 2 In one embodiment, the mounting base 130 is provided with a mounting part 131, and the partition 140 is provided with a mating part 141, and the mounting part 131 and the mating part 141 are assembled together.

[0069] The mating part 141 of the partition 140 can be assembled with the mounting part 131 on the mounting base 130 to realize the connection between the partition 140 and the mounting base 130.

[0070] As an example, in some embodiments, the mounting portion 131 of the mounting base 130 is provided with a positioning pin, and the mating portion 141 of the partition member 140 is provided with a pin hole, through which the positioning pin passes to achieve the assembly of the partition member 140 and the mounting base 130; in other embodiments, a bolt can also be used to pass through the through hole on the mating portion 141 and screw it into the screw hole on the mounting portion 131, as long as the connection between the partition member 140 and the mounting base 130 can be achieved through the assembly between the mounting portion 131 and the mating portion 141, no specific limitation is made here.

[0071] Please see Figure 1 and Figure 2 In one embodiment, the blocking mechanism 200 includes a first blocking member 210 and a second blocking member 220. The first blocking member 210 extends along a first direction of the oil-gas separator, and the second blocking member 220 extends along a second direction of the oil-gas separator, the second direction intersecting the first direction.

[0072] A first blocking member 210 extending in a first direction and a second blocking member 220 extending in a second direction are provided in the breathing chamber 110 to fully change the flow direction of the oil-gas mixture. Oil-gas separation is achieved by the oil-gas mixture colliding with the first blocking member 210 and the second blocking member 220. The oil will adhere to the first blocking member 210 and / or the second blocking member 220 and flow back to the crankcase under the action of gravity through the first through hole 121 and / or the third through hole 123, so as to effectively avoid the phenomenon of increased oil consumption.

[0073] In some embodiments, the blocking mechanism 200 further includes a third blocking member 230, which is disposed in the breathing chamber 110 and can extend in any preset direction, as long as it can change the flow direction of the oil-gas mixture, and is not specifically limited here.

[0074] Furthermore, in some embodiments, the third blocking member 230 may extend along a straight line or along a curve, without being specifically limited here.

[0075] Another embodiment provides an engine including a crankcase, an air filter, and an oil-gas separator as described above. The oil-gas separator is located in the crankcase, and both the first through hole 121 and the second through hole 122 are connected to the interior of the crankcase. The air filter is connected to the exhaust port 124.

[0076] In the aforementioned engine, when the oil-gas separator is in use, the oil-gas mixture in the crankcase enters the breather chamber 110 through the relatively lower first through-hole 121 and second through-hole 122. Under the action of the blocking mechanism 200, the flow direction of the oil-gas mixture in the breather chamber 110 is changed, causing the relatively denser oil to impact and remain on the inner wall of the separator 100 or the breather chamber 110 due to inertia, while the relatively less dense blow-by gas continues to flow and exits through the relatively higher exhaust port 124 towards the air filter. The oil remaining in the breather chamber 110 flows towards the first through-hole 121 under the influence of gravity, and then... The oil flows back to the crankcase through the first through hole 121, thus preventing oil from entering the air filter and causing an abnormal increase in oil consumption. Compared with conventional technology, in the above-mentioned engine, the first through hole 121, which has the lowest relative height, is not only used to guide the oil-air mixture in the crankcase into the breather chamber 110, but also to guide the oil remaining in the breather chamber 110 back to the crankcase. In this way, when the second through hole 122 is blocked due to the deposition of impurities, the oil-air mixture can still flow to the breather chamber 110 through the first through hole 121, preventing the abnormal increase in crankcase pressure caused by poor blow-by in the crankcase and improving the reliability of the engine.

[0077] Furthermore, since the air filter is under negative pressure, the blow-by gas in the crankcase will enter the air filter through the breather chamber 110 under the negative pressure generated by the air filter. In this process, the oil and gas in the oil-gas mixture can be separated to prevent the abnormal increase in oil consumption caused by oil entering the air filter.

[0078] Another embodiment provides a motorcycle, which includes a body and an engine as described above, the engine being disposed on the body.

[0079] In the aforementioned motorcycle, when the engine's oil-gas separator is in use, the oil-gas mixture in the crankcase enters the breather chamber 110 through the relatively low-height first through-hole 121 and second through-hole 122. Under the action of the blocking mechanism 200, the flow direction of the oil-gas mixture in the breather chamber 110 is changed. This causes the relatively denser oil to impact and remain on the inner wall of the separator 100 or the breather chamber 110 due to inertia, while the relatively less dense blow-by gas continues to flow and exits through the relatively high-height exhaust port 124 towards the air filter. The oil remaining in the breather chamber 110 flows towards the first through-hole 121 under the influence of gravity. The oil flows back into the crankcase through the first through-hole 121, thus preventing oil from entering the air filter and causing an abnormal increase in oil consumption. Compared with traditional technology, in the motorcycle described above, the first through-hole 121, which has the lowest relative height, is not only used to guide the oil-air mixture in the crankcase into the breather chamber 110, but also to guide the oil remaining in the breather chamber 110 back into the crankcase. In this way, when the second through-hole 122 is blocked due to the deposition of impurities, the oil-air mixture can still flow to the breather chamber 110 through the first through-hole 121, preventing the abnormal increase in crankcase pressure caused by poor blow-by in the crankcase and improving the reliability of the engine.

[0080] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0081] The above embodiments merely illustrate several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. An oil-gas separation device, characterized in that, include: The separation mechanism includes a breathing chamber, a first through hole, a second through hole, and an exhaust hole, wherein the first through hole, the second through hole, and the exhaust hole are all connected to the breathing chamber. A blocking mechanism is provided in the breathing chamber, and the blocking mechanism is used to change the flow direction of the oil-gas mixture in the breathing chamber so as to separate the oil and gas in the oil-gas mixture; When the oil-gas separator is in use, the height of the exhaust port is higher than the height of the second through hole, and the height of the second through hole is higher than the height of the first through hole.

2. The oil-gas separation device according to claim 1, characterized in that, The separation mechanism includes a mounting base, a partition, and a protrusion surrounding the mounting base. The partition is disposed on the protrusion so that the mounting base, the protrusion, and the partition surround and form the breathing chamber.

3. The oil-gas separation device according to claim 2, characterized in that, The oil-gas separator has a first side and a second side arranged opposite to each other along its first direction. When the oil-gas separator is in the installation and use state, the height of the second side is higher than the height of the first side. The first through hole is opened on the protrusion and is arranged towards the first side, and the exhaust hole is opened on the protrusion and is arranged towards the second side.

4. The oil-gas separation device according to claim 3, characterized in that, The breathing chamber includes a first separation chamber and a second separation chamber. At least a portion of the first separation chamber extends along the first direction. The first through hole and the second through hole are both connected to the first separation chamber. At least a portion of the second separation chamber extends along the second direction of the oil-gas separation device. The second direction intersects with the first direction. The second separation chamber is connected to the side of the first separation chamber facing the second side. The exhaust port is connected to the second separation chamber.

5. The oil-gas separation device according to claim 4, characterized in that, The protrusion is also provided with a third through hole, which communicates with the second separation cavity and is positioned toward the first side.

6. The oil-gas separation device according to claim 5, characterized in that, The third through hole is provided in at least two, and the at least two third through holes are spaced apart along the second direction.

7. The oil-gas separation device according to claim 2, characterized in that, The second through hole is formed in the partition; Or / and, the mounting base is provided with a mounting part, the partition is provided with a mating part, and the mounting part is assembled with the mating part.

8. The oil-gas separation device according to claim 1, characterized in that, The blocking mechanism includes a first blocking member and a second blocking member. The first blocking member extends along a first direction of the oil-gas separator, and the second blocking member extends along a second direction of the oil-gas separator, the second direction intersecting the first direction.

9. An engine, characterized in that, The engine includes a crankcase, an air filter, and an oil-gas separator as described in any one of claims 1-8. The oil-gas separator is located in the crankcase, and the first through hole and the second through hole are both connected to the interior of the crankcase. The air filter is connected to the exhaust port.

10. A motorcycle, characterized in that, The motorcycle includes a body and an engine as described in claim 9, the engine being disposed on the body.

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