Cylinder head cover and motorcycle

Abstract

The present application relates to a cylinder head cover and a motorcycle. The cylinder head cover of the present application includes a cover body, a baffle, a vent plate and an oil baffle. The cover body is provided with an exhaust port, which is used to discharge the oil-gas mixture; the baffle is convexly provided on the inner surface of the cover body; the vent plate is provided on the baffle and cooperates with the baffle to form an oil-gas separation chamber and an oil-gas inlet, and the oil-gas inlet is connected to the exhaust port through the oil-gas separation chamber; the oil baffle is connected to the vent plate, and the oil baffle extends from the position of the oil-gas inlet in the opposite direction of the flow direction of the oil-gas inlet to form an eaves structure, and the eaves structure is spaced apart from the cover body under the support of the baffle. The cylinder head cover provided by the present application has the function of blocking most of the engine oil in the oil-gas mixture without affecting the air intake capacity of the oil-gas separation chamber, so as to improve the ability of the cylinder head cover to separate the engine oil and exhaust gas and reduce the enclosure cost of the motorcycle engine.

Description

Technical Field

[0001] The present application relates to the technical field of motorcycle engines, and in particular to a cylinder head cover and a motorcycle. Background Art

[0002] On motorcycle engines, the cylinder head cover is equipped with a vent pipe connector to vent exhaust gas mixed with oil from the engine crankcase out of the cylinder head cover. Traditional cylinder head covers are equipped with an oil-gas separation chamber. As the exhaust gas circulates within the labyrinth structure, the oil in the exhaust gas is retained on the inner walls of the labyrinth structure, separating the exhaust gas and the oil. This reduces the amount of oil discharged with the exhaust gas out of the cylinder head cover, thereby reducing oil loss. However, when the engine is operating at high load, the exhaust gas contains a large amount of oil. Traditional cylinder head covers are not sufficient to fully reduce the amount of oil discharged, resulting in significant oil loss. Summary of the Invention

[0003] Based on this, it is necessary to provide a cylinder head cover and a motorcycle to address the problem that a large amount of engine oil in the crankcase enters the air filter along with the exhaust gas when the engine is working at high load.

[0004] In one aspect, the present application provides a cylinder head cover, comprising:

[0005] The cover body is provided with an exhaust port, wherein the exhaust port is used to discharge the oil-gas mixture;

[0006] a barrier member protruding from the inner surface of the cover;

[0007] a vent plate, which is covered on the baffle and cooperates with the baffle to form an oil-gas separation chamber and an oil-gas inlet, wherein the oil-gas inlet is connected to the exhaust port through the oil-gas separation chamber; and

[0008] The oil baffle is connected to the vent plate, and the oil baffle extends from the position of the oil and gas inlet in the opposite direction of the flow direction of the oil and gas inlet to form an eaves structure. The eaves structure is spaced apart from the cover body under the support of the baffle.

[0009] In one embodiment, the edge of the oil baffle is provided with a chamfer.

[0010] In one embodiment, the baffle includes a first baffle wall and a second baffle wall, one end of the first baffle wall is connected to the cover body, and one end of the second baffle wall is connected to the cover body. The end of the first baffle wall connected to the cover body and the end of the second baffle wall connected to the cover body are respectively located on both sides of the exhaust port, so as to separate the oil from the oil-gas mixture in the oil-gas separation chamber and discharge the exhaust gas through the exhaust port.

[0011] In one embodiment, the barrier member further includes a third barrier wall, which is spaced apart between an end of the first barrier wall away from the exhaust port and an end of the second barrier wall away from the exhaust port, and the oil and gas inlet includes a first inlet and a second inlet, the first inlet is formed between the first barrier wall and the third barrier wall, and the second inlet is formed between the second barrier wall and the third barrier wall.

[0012] In one embodiment, the barrier member further includes a fourth barrier wall, which is arc-shaped, disposed on the cover body and corresponding to the first entrance, with the middle of the fourth barrier wall close to the first entrance and both ends of the fourth barrier wall away from the first entrance.

[0013] In one embodiment, the barrier member further includes a ridge, which includes a plurality of ridges, which are spaced apart and extend toward the barrier member. The ridge is used to form an oil-gas separation channel with the barrier member in the oil-gas separation chamber to adhere to the engine oil in the oil-gas mixture.

[0014] In one embodiment, the cover body is provided with a perforation, the ventilation sheet is provided with an observation hole, the observation hole corresponds to the perforation, and the perforated upper cover is provided with an eyepiece, the eyepiece is opposite to the observation hole.

[0015] In one embodiment, the perforations are located on the ridges.

[0016] In one embodiment, the cover body is provided with two mounting holes, the two mounting holes are arranged diagonally, and part of the first retaining wall or the second retaining wall is arranged around a part of the edge of at least one of the mounting holes.

[0017] On the other hand, the present application also provides a motorcycle, comprising a body, an engine, an air filter and the above-mentioned cylinder head cover, wherein the engine is arranged on the body, the cylinder head cover is arranged on the engine, and the exhaust port is connected to the air filter.

[0018] The above-mentioned cylinder head cover, by arranging an oil baffle with a flying eaves structure on the vent plate, can prevent the oil in the engine from entering the oil-gas separation chamber along with the exhaust gas without significantly affecting the air intake of the oil-gas separation chamber, thereby reducing the amount of oil leakage when the engine is operating at high load, and reducing the maintenance cost of the engine. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic structural diagram of a cylinder head cover in one embodiment of the present application.

[0020] Figure 2 Schematic diagram of the structure of the cover body in one embodiment of the present application.

[0021] Figure 3 This is a structural diagram of the cover body at another angle in one embodiment of the present application.

[0022] Description of the attached figure:

[0023] 100. Cover; 101. Exhaust port; 110. First air-avoiding portion; 111. Perforation; 120. Second air-avoiding portion; 121. First mounting hole; 130. Third air-avoiding portion; 131. Second mounting hole; 140. Eyepiece; 150. Ventilation pipe joint; 200. Partition; 201. First entrance; 202. Second entrance; 210. First baffle; 220. Second baffle; 230. Third baffle; 240. Fourth baffle; 250. Raised ridge; 251. Straight ridge; 252. Supporting ridge; 300. Ventilation sheet; 310. Observation hole; 400. Oil-blocking member. DETAILED DESCRIPTION

[0024] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0025] In the description of this application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0026] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of this application, if the term "plurality" appears, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0027] In this application, unless otherwise specified or limited, the terms "mounted," "connected," "connected," "fixed," etc., should be interpreted broadly. For example, these terms may refer to fixed connections, removable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediary; and internal communication between two components or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0028] In this application, unless otherwise expressly specified or limited, if a first feature is described as being "above" or "below" a second feature, or similar descriptions, this may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is described as being "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is described as being "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0029] As described in the background, when a motorcycle engine is operating at high load, conventional cylinder head covers easily allow the engine oil to escape from the cylinder head cover along with the exhaust gas and enter the air filter, causing rapid loss of the engine oil and air filter, and increasing the maintenance cost of the motorcycle engine. Therefore, the present application provides the following cylinder head cover.

[0030] See Figure 1 , Figure 1 The structural schematic diagram of the cylinder head cover in one embodiment of the present application is shown. The cylinder head cover includes a cover body 100, a baffle 200, a vent plate 300 and an oil baffle 400. The cover body 100 is provided with an exhaust port 101 for discharging the oil-gas mixture. The baffle 200 is protruding from the inner surface of the cover body 100, and the vent plate 300 is covered on the baffle 200 and cooperates with the baffle 200 to form an oil-gas separation chamber and an oil-gas inlet, and the oil-gas inlet is connected to the exhaust port 101 through the oil-gas separation chamber. The oil baffle 400 is connected to the vent plate 300, and the oil baffle 400 extends from the position of the oil-gas inlet in the opposite direction of the flow direction of the oil-gas inlet to form an eaves structure. The eaves structure is spaced apart from the cover body 100 under the support of the baffle 200.

[0031] The cylinder head cover described in this application features an oil baffle 400 with a cornice structure on the vent plate 300. This prevents most oil droplets in the oil-gas mixture from entering the oil-gas separation chamber through the oil-gas inlet, thereby reducing the oil content in the exhaust gas discharged from the cylinder head cover. This prevents increased oil discharge even during high-load engine operation, effectively reducing engine maintenance costs. Furthermore, the cornice structure, supported by the baffle 200 and spaced apart from the cover body 100, does not add resistance to the flow of the oil-gas mixture, ensuring that the oil-gas mixture can enter the oil-gas separation chamber normally.

[0032] For example, refer to Figure 1 and Figure 3 The cover 100 is placed over the crankcase (not shown), with the inner wall of the cover 100 facing the crankcase. A barrier 200 is provided on the inner wall of the cover 100. The barrier 200 includes a plurality of ridges, each of which is a smoothly curved, long strip. The shape of the vent 300 corresponds to the shape formed by the outermost ridges of the barrier 200. The vent 300 is fixedly mounted on the ridges, forming an oil-gas separation chamber with the ridges and the inner surface of the cover 100. The chamber walls and the outer walls of the ridges can both adhere to the oil in the oil-gas mixture to separate the oil and exhaust gas. It is understood that the outermost ridges are intermittent in design, with the oil and gas inlet formed at the point where the ridges are disconnected. Exhaust port 101 is located on cover 100 and communicates with the oil-gas separation chamber. Therefore, a mixture of engine oil and exhaust gas enters the oil-gas separation chamber from the oil-gas inlet, where the oil and exhaust gas are separated and then guided by the ridges toward exhaust port 101. A vent pipe connector 150 is located within exhaust port 101 to facilitate connection to an air pipe (not shown) on the outside of cover 100, which then directs the exhaust gas elsewhere.

[0033] In particular, the oil blocking member 400 is connected to the vent plate 300 and corresponds to the oil and gas inlet. Figure 1 and Figure 2As can be understood, at the oil and gas inlet below the cover 100, the oil and gas mixture enters the oil and gas separation chamber approximately in the left-right direction. On the left side of the oil and gas inlet, the oil and gas mixture flows from left to right, and on the right side of the oil and gas inlet, the oil and gas mixture flows from right to left. Correspondingly, the eaves structure of the oil baffle 400 extends away from the oil and gas inlet in the left and right directions on both sides of the oil and gas inlet, thereby improving the ability to block oil droplets in the oil and gas mixture, blocking the oil droplets outside the oil and gas separation chamber, and reducing the oil content of the oil and gas mixture in the oil and gas separation chamber. As can be understood, at the oil and gas inlet on the right side of the cover 100, the oil and gas mixture flows from bottom to top, and correspondingly, the eaves structure of the oil baffle 400 extends away from the oil and gas inlet in the downward direction. In this embodiment, the extension distance of the eaves structure is 1-3 cm. Within this length range, the oil blocking member 400 can block most of the oil droplets without excessively increasing the resistance of the oil-gas mixture entering the oil-gas inlet, achieving the best effect.

[0034] Continue to refer Figure 1 In some embodiments, the edges of the oil baffle 400 are chamfered. For example, the oil baffle 400 and the vent sheet 300 are arranged on the same plane. The oil baffle 400 extends from the edge of the vent sheet 300 toward the inner wall of the cover 100, completely covering the oil and gas inlet. The outer edges of the oil baffle 400 extending from the eaves structure of the vent sheet 300 form two right angles. Both right angles are chamfered to prevent scratches on the interior of the cover 100 or the hands of the installer during installation or removal of the oil baffle 400, providing greater safety.

[0035] In some embodiments, the oil blocking member 400 is integrally formed with the vent sheet 300, that is, the vent sheet 300 and the oil blocking member 400 are one structural member. Figure 1 As shown, the vent sheet 300 and the oil baffle 400 are an integral plate, wherein, in order to facilitate understanding of the cornice structure formed by the oil baffle 400, Figure 1 A dotted line is used to separate the vent sheet 300 and the oil deflector 400. In reality, since the oil deflector 400 and vent sheet 300 are integrally formed, there is no apparent boundary between them. After the vent sheet 300 and the oil deflector 400 are installed on the cover 100, the overhanging structure is defined by the structure extending in the opposite direction of the oil and gas inlet flow direction.

[0036] In other embodiments, the oil deflector 400 may also be a sheet that is detachably mounted on the vent sheet 300. It is understood that when the oil deflector 400 is detachably mounted on the vent sheet 300, sheets with eave structures of different sizes or shapes may be installed according to actual needs to achieve the best oil deflection effect.

[0037] refer to Figure 2In some embodiments, the barrier 200 includes a first barrier wall 210 and a second barrier wall 220. One end of the first barrier wall 210 is connected to the side wall of the cover 100, and one end of the second barrier wall 220 is also connected to the side wall of the cover 100. The end of the first barrier wall 210 connected to the side wall of the cover 100 and the end of the second barrier wall 220 connected to the side wall of the cover 100 are respectively located on both sides of the exhaust port 101, so as to separate the oil from the oil-gas mixture in the oil-gas separation chamber and discharge the exhaust gas through the exhaust port 101. Figure 2 For example, illustratively, the first baffle wall 210 and the second baffle wall 220 are smoothly curved convex grooves. In the middle of the inner surface of the cover body 100, the first baffle wall 210 and the second baffle wall 220 are away from each other to form an oil-gas separation chamber, and the upper ends of the first baffle wall 210 and the second baffle wall 220 converge at the upper and lower sides of the exhaust port 101, so that in the process of guiding the oil-gas mixture from the oil-gas separation chamber to the exhaust port 101, the first baffle wall 210 and the second baffle wall 220 adhere to the oil in the oil-gas mixture, thereby separating the oil in the oil-gas mixture from the exhaust gas, so that the separated exhaust gas is discharged from the exhaust port 101, and the probability of oil being discharged from the exhaust port 101 is reduced.

[0038] In some embodiments, the barrier 200 further includes a third barrier wall 230, which is spaced apart between an end of the first barrier wall 210 away from the exhaust port and an end of the second barrier wall 220 away from the exhaust port. The oil and gas inlet includes a first inlet 201 and a second inlet 202, wherein the first inlet 201 is formed between the first barrier wall 210 and the third barrier wall 230, and the second inlet 202 is formed between the second barrier wall 220 and the third barrier wall 230. Figure 2 For example, the distance between the lower ends of the first baffle wall 210 and the second baffle wall 220 is large enough to accommodate the third baffle wall 230. The lower end of the third baffle wall 230 is spaced a certain distance from the lower end of the first baffle wall 210 to form the first inlet 201. The upper end of the third baffle wall 230 is spaced apart from the lower end of the second baffle wall 230 to form the second inlet 202. The third baffle wall 230, in conjunction with the first baffle wall 210 and the second baffle wall 220, forms two oil-gas inlets on the cover 100, allowing the oil-gas mixture to enter the oil-gas separation chamber in a diverted manner, thereby improving the oil-gas separation chamber's ability to separate the engine oil from the oil-gas mixture.

[0039] Continue to refer Figure 2In some embodiments, the barrier member 200 further includes a fourth barrier wall 240. The fourth barrier wall 240 is curved and positioned on the cover 100, corresponding to the first inlet 201. The middle portion of the fourth barrier wall 240 is adjacent to the first inlet 201, while both ends of the fourth barrier wall 240 are distal to the first inlet 201. Specifically, the fourth barrier wall 240 is slightly longer than the first inlet 201, with the middle portion of the fourth barrier wall 240 adjacent to the first inlet 201 and the ends of the fourth barrier wall 240 curving away from the first inlet 201. This arrangement of the fourth barrier wall 240 allows the oil-gas mixture to be directed into the first inlet 201 from both sides, increasing the intake volume and further enhancing the oil-gas separation chamber's ability to separate the oil from the oil-gas mixture. It is understood that the oil barrier member 400 also completely covers the entire fourth barrier wall 240 to reduce the amount of oil in the oil-gas mixture from entering the first inlet 201 from both sides.

[0040] Continue to refer Figure 2 In some embodiments, the barrier 200 further includes a rib 250 comprising a plurality of ribs 252 spaced apart and extending toward the barrier 200. The ribs 250 and the barrier 200 form an oil-gas separation channel within the oil-gas separation chamber to attract the oil in the oil-gas mixture. In an exemplary embodiment, the rib 250 includes a straight rib 251 and four ribs 252 extending from the straight rib 251. Two of the ribs 252 extend toward the first barrier wall 210, and the remaining two ribs 252 extend toward the third barrier wall 230. The rib 250, comprising the straight rib 251 and the plurality of ribs 252, forms an oil-gas separation channel within the oil-gas separation chamber. This channel has a maze-like structure, increasing the distance the oil-gas mixture travels within the chamber and helping the oil in the oil-gas mixture adhere to the rib 250 and the three barrier walls, thereby separating the oil from the exhaust gas.

[0041] Also refer to Figure 1 、 Figure 2 and Figure 3In some embodiments, the cover 100 is provided with a perforation 111, and the vent plate 300 is provided with an observation hole 310. The observation hole 310 corresponds to the perforation 111. An eyepiece 140 is provided above the perforation 111, and the eyepiece 140 faces the observation hole 310. Specifically, the cover 100 is provided with a first airtight portion 110. The first airtight portion 110 is located in the middle of the cover 100. The first airtight portion 110 is circular and recessed from the side of the cover 100 facing away from the crankcase toward the vent plate 300. The observation hole 310 is provided on the vent plate 300 at a position corresponding to the perforation 111. The eyepiece 140 is provided above the first airtight portion 110. The eyepiece 140 can be used to observe the working conditions within the cover 100 through the perforation 111 and the observation hole 310, while also preventing the oil-gas mixture within the cover 100 from being ejected out of the perforation 111 through the observation hole 310.

[0042] refer to Figure 2 and Figure 3 In some embodiments, the perforation 111 is provided on the ridge 250. For example, the first avoidance portion 110 corresponds to the straight ridge 251 and cuts off the straight ridge 251 in the middle. The perforation 111 is located on the straight ridge 251. This avoids the perforation 111 from being located on the oil-gas separation channel within the oil-gas separation chamber, preventing oil droplets adhering to the oil-gas separation chamber from affecting observation, resulting in a more ideal observation effect.

[0043] refer to Figure 1 、 Figure 2 and Figure 3 In some embodiments, the cover body is provided with two mounting holes, which are arranged diagonally. For example, the two mounting holes are respectively a first mounting hole 121 and a second mounting hole 131. The cover body 100 is further provided with a second avoidance portion 120 and a third avoidance portion 130. The first avoidance portion 110 and the second avoidance portion 120 are both recessed from the cover body 100 toward the side where the vent sheet 300 is located. The first mounting hole 121 is provided on the second avoidance portion 120, and the second mounting hole 131 is provided on the third avoidance portion 130. The first mounting hole 121 and the second mounting hole 131 are both used to install bolts (not shown). By arranging the first avoidance portion 110 and the second avoidance portion 120 diagonally on the cover body 100, the cover body 100 can be more securely mounted on the crankcase.

[0044] refer to Figure 2In some embodiments, a portion of the first retaining wall 210 or the second retaining wall 220 is disposed around a portion of the edge of at least one mounting hole. In an exemplary embodiment, a portion of the second retaining wall 220 is disposed congruently on the inner wall of the cover 100. On the inner surface of the cover 100, above the second mounting hole 131, the second retaining wall 220 extends downward perpendicularly from the inner wall of the cover 100 and is congruently disposed around approximately one-quarter of the lower left edge of the third through-hole 131. Because the portion of the second retaining wall 220 surrounding a portion of the edge of the second mounting hole 131 is disposed, the barrier 200 is also subjected to the compressive force of the bolts when the cover 100 is secured to the crankcase using bolts, thereby improving the securing effect between the barrier 200 and the vent 300, and enhancing the oil-gas separation chamber's ability to separate engine oil and exhaust gas.

[0045] On the other hand, the present application also provides a motorcycle, which includes a vehicle body (not shown), an engine (not shown), an air filter (not shown) and the cylinder head cover mentioned above. The engine is arranged on the vehicle body to provide power for the vehicle body. The cylinder head cover is arranged on the crankcase of the engine to separate the engine oil from the oil-gas mixture discharged by the engine and reduce the oil content in the exhaust gas. The exhaust port 101 is provided with a vent pipe joint 150, and the vent pipe joint 150 is connected to the air filter through an air pipe (not shown). The exhaust gas enters the air filter through the exhaust port 101, is filtered by the air filter, and is discharged into the air. By arranging an oil baffle 400 on the vent sheet 300, the amount of oil entering the air filter is greatly reduced, the maintenance cost of the motorcycle is reduced, and the product competitiveness of the motorcycle is enhanced.

[0046] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned 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.

[0047] The above-described embodiments merely represent several implementation methods of the present application. 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 a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A cylinder head cover, characterized in that: The cylinder head cover comprises: The cover body is provided with an exhaust port, wherein the exhaust port is used to discharge the oil-gas mixture; a barrier member protruding from the inner surface of the cover; a vent sheet, which is covered on the baffle and cooperates with the baffle to form an oil-gas separation chamber and an oil-gas inlet, wherein the oil-gas inlet is connected to the exhaust port through the oil-gas separation chamber; and An oil baffle is connected to the vent sheet, and the oil baffle extends from the oil and gas inlet in a direction opposite to the flow direction of the oil and gas inlet to form an eaves structure, and the eaves structure is spaced apart from the cover body under the support of the baffle; The baffle comprises a first baffle wall, a second baffle wall, a third baffle wall and a fourth baffle wall, one end of the first baffle wall is connected to the cover body, one end of the second baffle wall is connected to the cover body, the end of the first baffle wall connected to the cover body and the end of the second baffle wall connected to the cover body are respectively located on both sides of the exhaust port, so as to separate the oil and gas mixture from the oil in the oil-gas separation chamber and discharge the exhaust gas through the exhaust port, the third baffle wall is arranged at intervals between the end of the first baffle wall away from the exhaust port and the end of the second baffle wall away from the exhaust port, the oil and gas inlet comprises a first inlet and a second inlet, The first inlet is formed between the first baffle wall and the third baffle wall, the second inlet is formed between the second baffle wall and the third baffle wall, the fourth baffle wall is arc-shaped, the fourth baffle wall is arranged on the cover body and corresponds to the first inlet, and the middle part of the fourth baffle wall is close to the first inlet, and the two ends of the fourth baffle wall are away from the first inlet; the partition member also includes a ridge, the ridge includes a plurality of branch ridges, the plurality of branch ridges are arranged at intervals and extend toward the partition member, the ridge is used to form an oil-gas separation channel in the oil-gas separation chamber with the partition member to adhere the engine oil in the oil-gas mixture.

2. The cylinder head cover according to claim 1, characterized in that: The edge of the oil baffle is provided with a chamfer.

3. The cylinder head cover according to claim 1, characterized in that: The cover body is provided with a perforation, the ventilation sheet is provided with an observation hole, the observation hole corresponds to the perforation, the perforated upper cover is provided with an eyepiece, and the eyepiece is opposite to the observation hole.

4. The cylinder head cover according to claim 3, characterized in that: The through holes are located on the ridges.

5. The cylinder head cover according to claim 1, characterized in that: The cover body is provided with two mounting holes, the two mounting holes are arranged diagonally, and part of the first retaining wall or the second retaining wall is arranged around a part of the edge of at least one of the mounting holes.

6. A motorcycle, characterized in that: The vehicle comprises a vehicle body, an engine, an air filter and the cylinder head cover according to any one of claims 1 to 5, wherein the engine is arranged on the vehicle body, the cylinder head cover is arranged on the engine, and the exhaust port is connected to the air filter.

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