Air filter with oil-gas separation function and motorcycle

Abstract

The invention discloses an air filter with an oil-gas separation function and a motorcycle. The air filter comprises an air filter shell with an air inlet mixing cavity and further comprises an oil-gas separation cavity located in the air inlet mixing cavity. The oil-gas separation cavity is provided with a waste gas inlet, a waste gas outlet and an oil-gas separation labyrinth channel which enables the waste gas inlet and the waste gas outlet to be communicated and is used for separating an oil-gas mixture. The oil-gas separation labyrinth channel is composed of a plurality of separation channels which are bent upwards in the oil-gas separation cavity in a reciprocating mode in the horizontal direction. The oil-gas separation cavity with the oil-gas separation function is integrated in the air filter shell with the air inlet mixing cavity, so that when the scheme is applied to a locomotive, the structure compactness is higher, and the pipeline arrangement of the whole locomotive can be simplified; in addition, due to the design of the oil-gas separation labyrinth channel, the oil-gas separation effect in the engine assembly can be optimized, oil return is faster, and the oil return efficiency is improved.

Description

Technical Field

[0001] This invention relates to the fields of engine intake systems and motorcycles, specifically to an air filter with oil-gas separation function and a motorcycle. Background Technology

[0002] When the crankcase exhaust gas oil-gas separator is externally mounted, it is usually designed as an independent oil-gas separator structure, and the inside is generally filled with steel wire mesh or sponge. This structure has defects such as poor oil-gas separation effect and slow oil return. At the same time, this structure is generally located between the engine and the air filter. The components in the engine assembly are scattered, and the structure of the engine assembly is loose and not compact. This results in a large space required when applied to the whole vehicle, reduced layout flexibility, and even affects the handling of the whole vehicle.

[0003] Therefore, to solve the above problems, an air filter and motorcycle with oil-gas separation function are needed, which can optimize the oil-gas separation effect of the oil-gas separation structure in the engine assembly, improve oil return efficiency, and at the same time improve the compactness of the structural layout of various components in the engine assembly, which is conducive to its application in the whole vehicle. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to overcome the defects in the prior art and provide an air filter and motorcycle with oil-gas separation function, which can optimize the oil-gas separation effect of the oil-gas separation structure in the engine assembly, improve the oil return efficiency, and at the same time improve the compactness of the structural layout of each component in the engine assembly, which is conducive to its application in the whole vehicle.

[0005] The air filter with oil-gas separation function of the present invention includes an air filter housing with an air intake mixing chamber, and an oil-gas separation chamber located in the air intake mixing chamber;

[0006] The oil-gas separation chamber has an exhaust gas inlet, an exhaust gas outlet, and an oil-gas separation labyrinth channel that connects the exhaust gas inlet and the exhaust gas outlet for separating oil-gas mixtures.

[0007] The oil-gas separation labyrinth channel is composed of several separation channels that bend upwards and back and forth in the horizontal direction within the oil-gas separation chamber;

[0008] The exhaust gas inlet is connected to the crankcase of the engine, introducing the oil-gas mixture in the crankcase into the oil-gas separation labyrinth channel. The exhaust gas outlet is connected to the intake mixing chamber, leading the gas separated by the oil-gas separation labyrinth channel out into the intake mixing chamber.

[0009] Furthermore, the bottom surface of each section of the separation channel along the horizontal direction is inclined downwards towards the corresponding air intake direction.

[0010] Furthermore, the exhaust gas inlet is located at the bottom of the oil-gas separation chamber, and the exhaust gas outlet is located at the top of the oil-gas separation chamber;

[0011] The oil-gas separation labyrinth channel is formed by several ribs that are staggered and spaced apart in the height direction in the oil-gas separation chamber;

[0012] Each of the aforementioned ribs is arranged downwards at a staggered position.

[0013] Furthermore, two adjacent ribs on the same side in the horizontal direction form a separation channel, and a rib on the opposite side of the separation channel in the horizontal direction extends into the separation channel opposite to it.

[0014] Furthermore, it also includes oil baffles, which are disposed at the bottom of the exhaust gas outlet to form a barrier or partial barrier around the exhaust gas outlet.

[0015] Furthermore, the exhaust gas inlet is located at the bottom of the air filter housing, and the bottom inner surface of the air filter housing protrudes into the air mixing chamber to form a supporting inner shell surrounding the exhaust gas inlet.

[0016] The top of the supporting inner shell is provided with a cover. After the cover and the supporting inner shell are assembled, an oil-gas separation chamber is formed, and the exhaust gas outlet is located on the cover.

[0017] Furthermore, the bottom surface of the cover protrudes downward to form a protective plate, and the rib plate is integrally formed with the protective plate and the cover;

[0018] A ribbed guard plate extends into the supporting inner shell, with the bottom end of the guard plate close to the bottom of the air filter housing.

[0019] Furthermore, the periphery of the cover extends circumferentially and bends downward to form an "n"-shaped limiting groove, through which the cover is fastened to the top edge of the supporting inner shell.

[0020] Furthermore, the exhaust gas outlet is provided with a connecting pipe, which is used to bring the exhaust gas outlet close to the air inlet of the air mixing chamber.

[0021] This solution also discloses a motorcycle, including the air filter with oil-gas separation function.

[0022] The beneficial effects of this invention are as follows: The air filter and motorcycle with oil-gas separation function disclosed in this invention integrate the oil-gas separation chamber with the oil-gas separation function into the air filter housing with the intake mixing chamber. This makes the structure more compact when applied to motorcycles, simplifies the overall vehicle piping layout, optimizes the spatial layout, and enhances the system's sealing performance. Furthermore, the design of the oil-gas separation labyrinth channel in this solution connects to the crankcase, which can balance the pressure inside and outside the crankcase, reduce the risk of oil leakage caused by pressure differences, and optimize the oil-gas separation effect of the oil-gas separation structure in the engine assembly, resulting in faster oil return and improved oil return efficiency. The separated oil returns to the lubrication system through the return oil pipe, avoiding direct discharge into the external environment, thus improving environmental friendliness. Attached Figure Description

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0024] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ;

[0025] Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 ;

[0026] Figure 3 This is a schematic diagram of the structure of the present invention. Figure 3 ;

[0027] Figure 4 This is a schematic diagram of the structure of the present invention. Figure 4 ;

[0028] Figure 5 For the present invention Figure 2 A top-view structural diagram;

[0029] Figure 6 For the present invention Figure 5 A schematic diagram of the structure along the AA direction. Detailed Implementation

[0030] Figures 1-6As shown in the schematic diagram of the present invention, the air filter with oil-gas separation function in this embodiment includes an air filter housing with an air inlet mixing chamber 001; it also includes an oil-gas separation chamber located within the air inlet mixing chamber 001; the oil-gas separation chamber has an exhaust gas inlet 1, an exhaust gas outlet 2, and an oil-gas separation labyrinth channel 002 connecting the exhaust gas inlet 1 and the exhaust gas outlet 2 for separating the oil-gas mixture; the oil-gas separation labyrinth channel 002 is composed of several sections of separation channels 3 that bend upwards and reciprocate horizontally within the oil-gas separation chamber; the exhaust gas inlet 1 is located at the bottom of the oil-gas separation chamber, and the... The exhaust gas outlet 2 is located at the top of the oil-gas separation chamber; the exhaust gas inlet 1 is connected to the engine crankcase, introducing the oil-gas mixture in the crankcase into the oil-gas separation labyrinth channel 002; the exhaust gas outlet 2 is connected to the intake mixing chamber 001, leading the gas separated by the oil-gas separation labyrinth channel out to the intake mixing chamber 001; the oil separated by the oil-gas separation labyrinth channel 002 flows back to the exhaust gas inlet 1 located at the bottom of the oil-gas separation chamber and returns to the crankcase; the gas separated by the oil-gas separation labyrinth channel 002 is sent to the intake mixing chamber 001 and mixed with the intake air in the intake mixing chamber 001, and then sent to the engine. By integrating the oil-gas separation chamber with oil-gas separation function into the air filter housing with the intake mixing chamber 001, this solution can be applied to locomotives with a more compact structure, simplifying the overall vehicle piping layout, optimizing the space layout, and enhancing the system's sealing performance. Furthermore, the design of the oil-gas separation labyrinth channel 002 in this solution connects to the crankcase, which can balance the pressure inside and outside the crankcase, reduce the risk of oil leakage caused by pressure difference, and optimize the oil-gas separation effect of the oil-gas separation structure in the engine assembly, so that the oil after oil-gas separation flows back faster and improves the oil return efficiency; the separated oil returns to the crankcase, avoiding direct discharge into the external environment, which is more environmentally friendly.

[0031] In this embodiment, the bottom surface of each section of the separation channel 3 along the horizontal direction is inclined downwards towards the corresponding air intake direction, so that the oil return direction and the air outlet direction are opposite. This facilitates oil recycling and collection, reduces the oil mist content sent to the air intake mixing chamber 001, and improves the oil recovery capability.

[0032] In this embodiment, as Figure 6As shown, the oil-gas separation labyrinth channel 002 is formed by several ribs 4 arranged alternately and at intervals in the vertical direction within the oil-gas separation chamber. Each rib 4 is inclined downwards towards the staggered position. Two ribs 4 that are vertically adjacent on the same side in the horizontal direction form a separation channel 3. The rib 4 on the opposite side of the horizontal separation channel 3 extends into the corresponding separation channel 3. The top and bottom walls of the oil-gas separation chamber also form separation channels 3 with the ribs 4 that are adjacent to it in the vertical direction. In this design, the oil-gas separation labyrinth channel 002 formed by several ribs 4 and the top and bottom walls of the oil-gas separation chamber makes the outlet size of each separation channel 3 smaller, increases the flow velocity of the oil-gas mixture and increases the impact surface of the oil droplets, ensures stable bending of the airflow, ensures the separation and interception of oil droplets, and improves the oil-gas separation effect. The intersecting ribs 4 can also effectively guide the oil-gas mixture, further define the direction of the oil-gas mixture, prevent the oil-gas mixture from splitting and escaping out of the oil-gas separation chamber, and improve the separation effectiveness of the oil-gas mixture.

[0033] In this embodiment, as Figure 6 As shown, it also includes an oil-blocking rib 5, which is disposed at the bottom of the exhaust gas outlet 2 to form a barrier or partial barrier around the exhaust gas outlet 2. This prevents oil droplets from accumulating at the exhaust gas outlet 2, reduces the amount of oil mist escaping, and especially prevents oil droplets from being blown out of the oil-gas separation chamber, ensuring the relative cleanliness of the exhaust gas. In this design, the oil-blocking rib 5 is horizontally positioned opposite to the adjacent rib plate 4. The oil-blocking rib 5 and the opposite rib plate 4 are respectively located on both sides of the exhaust gas outlet 2 in the horizontal direction, together forming a barrier around the exhaust gas outlet 2. Figure 6 As shown, the oil baffle 5 and the rib plate 4 connecting the bottom of the exhaust gas outlet 2 are opposite each other in the horizontal direction, and the rib plate 4 located at the bottom of the exhaust gas outlet 2 blocks the bottom of the exhaust gas outlet.

[0034] In this embodiment, as Figures 2-6 As shown, the exhaust gas inlet 1 is located at the bottom of the air filter housing. Specifically, the exhaust gas inlet 1 is formed by protruding downward from the bottom of the air filter housing. The inner surface of the bottom of the air filter housing protrudes into the air mixing chamber 001 to form a supporting inner shell 6 surrounding the exhaust gas inlet 1. The supporting inner shell 6 and the air filter housing are integrally formed, which improves structural reliability and reduces assembly processes, thereby reducing manufacturing costs.

[0035] A cover 7 is provided at the top of the support inner shell 6. After the cover 7 is assembled with the support inner shell 6, an oil-gas separation chamber is formed. The exhaust gas outlet 2 is located on the cover 7. A plurality of rib plates 4 are integrally formed with the cover 7. Specifically, the bottom surface of the cover 7 protrudes downward to form a guard plate 8. The horizontal cross-section of the guard plate 8 is in a "C" shape with one side open. The rib plates 4 are integrally formed on the two opposite sides of the "C" shape of the guard plate 8. Among them, the rib plate 4 close to the exhaust gas outlet 2 and the oil-blocking rib 5 are formed on the bottom surface of the cover 7, ensuring the structural strength, and making the manufacturing of the cover 7 easier, improving the economy. During assembly, the open side of the "C" shape of the cover 7 faces the circumferential wall of the air filter housing. The guard plate 8 with rib plates 4 extends into the support inner shell 6 and is surrounded by the support inner shell 6. The bottom end of the guard plate 8 is close to the bottom of the air filter housing to further improve the structural reliability. There are also a number of ribs for increasing the structural strength at the bottom of the air filter housing. The ribs corresponding to the position of the support inner shell 6 are also used to limit the position of the cover 7. Specifically, these ribs are used to limit the position of the guard plate 8 on the cover 7. A notch corresponding to the ribs is formed at the bottom of the guard plate 8, which can improve the assembly efficiency of the cover 7 and the support inner shell 6.

[0036] In this embodiment, as Figure 6 shown, the peripheral edge of the cover 7 also extends circumferentially and bends downward to form an "n"-shaped limiting groove 9. The cover 7 is buckled on the top edge of the support inner shell 6 through the "n"-shaped limiting groove 9, improving the assembly reliability of the cover 7 and the support inner shell 6. And, in this solution, a sealing ring is also provided between the cover 7 and the support inner shell 6 to improve the sealing reliability and reduce the exhaust gas leakage.

[0037] In this embodiment, as Figure 2 shown, a connecting pipe 003 is provided at the exhaust gas outlet 2. The connecting pipe 003 makes the exhaust gas outlet 2 closer to the air inlet of the intake mixing chamber 001 to improve the air mixing efficiency. More preferably, the connecting pipe 003 makes the outlet direction of the exhaust gas outlet 2 face the air inlet of the intake mixing chamber 001 to further improve the air mixing uniformity and ensure the air mixing efficiency. A support portion 10 for limiting and supporting the connecting pipe 003 is provided on the cover 7. The support portion 10 and the cover 7 are integrally formed on the side of the cover 7. The support portion 10 has a through hole for limiting and supporting the connecting pipe 003. The connecting pipe 003 passes through the through hole to connect the exhaust gas outlet 2 and the mixing chamber, making the exhaust gas outlet 2 and the air inlet of the intake mixing chamber 001 close, and correspondingly making the outlet direction of the exhaust gas outlet 2 face the air inlet of the intake mixing chamber 001.

[0038] In this embodiment, as Figure 1 shown, the air filter housing includes a bottom shell 101 provided with an oil-gas separation chamber and a top cover 102 that is buckled and sealed and assembled to the bottom shell. The intake mixing chamber 001 is formed between the bottom shell and the top cover. The air inlet 103 of the intake mixing chamber 001 is located at the bottom of the bottom shell.

[0039] This solution also discloses a motorcycle, including the aforementioned air filter with oil-gas separation function. By integrating the oil-gas separation chamber with oil-gas separation function into the air filter housing with intake mixing chamber 001, this solution can achieve a more compact structure when applied to motorcycles, simplifying the overall vehicle piping layout, optimizing space layout, and enhancing system sealing. Furthermore, the design of the oil-gas separation labyrinth channel 002 in this solution connects to the crankcase, which can balance the pressure inside and outside the crankcase, reduce the risk of oil leakage caused by pressure difference, and optimize the oil-gas separation effect of the oil-gas separation structure in the engine assembly, resulting in faster oil return and improved oil return efficiency; the separated oil returns to the crankcase, avoiding direct discharge into the external environment, thus improving environmental friendliness.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. An air filter with oil-gas separation function, characterized in that: It includes an air filter housing with an intake mixing chamber, and an oil-gas separation chamber located within the intake mixing chamber; The oil-gas separation chamber has an exhaust gas inlet, an exhaust gas outlet, and an oil-gas separation labyrinth channel that connects the exhaust gas inlet and the exhaust gas outlet for separating oil-gas mixtures. The oil-gas separation labyrinth channel is composed of several separation channels that bend upwards and back and forth in the horizontal direction within the oil-gas separation chamber; The exhaust gas inlet is connected to the crankcase of the engine, introducing the oil-gas mixture in the crankcase into the oil-gas separation labyrinth channel. The exhaust gas outlet is connected to the intake mixing chamber, leading the gas separated by the oil-gas separation labyrinth channel out into the intake mixing chamber.

2. The air filter with oil-gas separation function according to claim 1, characterized in that: The bottom surface of each separation channel along the horizontal direction is inclined downwards towards the corresponding air intake direction.

3. The air filter with oil-gas separation function according to claim 2, characterized in that: The exhaust gas outlet is located at the top of the oil-gas separation chamber, and the exhaust gas inlet is located at the bottom of the oil-gas separation chamber. The oil-gas separation labyrinth channel is formed by several ribs that are staggered and spaced apart in the height direction in the oil-gas separation chamber; Each of the aforementioned ribs is arranged downwards at a staggered position.

4. The air filter with oil-gas separation function according to claim 3, characterized in that: Two adjacent ribs on the same side in the horizontal direction form a separation channel, and a rib on the opposite side of the separation channel in the horizontal direction extends into the separation channel opposite to it.

5. The air filter with oil-gas separation function according to claim 1, characterized in that: It also includes oil baffles, which are set at the bottom of the exhaust gas outlet to form a barrier or partial barrier around the exhaust gas outlet.

6. The air filter with oil-gas separation function according to claim 1, characterized in that: The exhaust gas inlet is located at the bottom of the air filter housing, and the bottom inner surface of the air filter housing protrudes into the air mixing chamber to form a supporting inner shell surrounding the exhaust gas inlet. The top of the supporting inner shell is provided with a cover. After the cover and the supporting inner shell are assembled, an oil-gas separation chamber is formed, and the exhaust gas outlet is located on the cover.

7. The air filter with oil-gas separation function according to claim 6, characterized in that: The bottom surface of the cover protrudes downward to form a protective plate, and the rib plate is integrally formed with the protective plate and the cover; A ribbed guard plate extends into the supporting inner shell, with the bottom end of the guard plate close to the bottom of the air filter housing.

8. The air filter with oil-gas separation function according to claim 6, characterized in that: The periphery of the cover extends circumferentially and bends downward to form an "n"-shaped limiting groove, which is used to fasten the cover to the top edge of the supporting inner shell.

9. The air filter with oil-gas separation function according to claim 1, characterized in that: The exhaust gas outlet is provided with a connecting pipe, which is used to bring the exhaust gas outlet close to the air inlet of the air mixing chamber.

10. A motorcycle, characterized in that: Includes the air filter with oil-gas separation function as described in any one of claims 1-9.

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