CN115929521A - Air inlet component for air filter assembly, air filter assembly and motorcycle - Google Patents

Abstract

The invention discloses an air inlet component for an air filter assembly, the air filter assembly and a motorcycle, wherein the air inlet component comprises an air inlet pipeline and an air inlet end head, one end of the air inlet pipeline is used for being connected with an air filter body, the air inlet end head comprises an end head body and an inward extending pipeline, the end head body is connected with the other end of the air inlet pipeline, one end of the inward extending pipeline is arranged on the end head body, the other end of the inward extending pipeline extends into the air inlet pipeline, the end head body is provided with an air inlet, and the end head body is communicated with the inward extending pipeline through the air inlet; the air filter assembly comprises the air inlet component, an air filter body and an air outlet component; the motorcycle comprises the air filter assembly. The other end of the internal extension pipeline extends into the air inlet pipeline, so that the cross section area of the air inlet pipeline generates mutation at the position, the pressure wave impedance mismatch is propagated to the position, and then a part of pressure waves are reflected to one side of the engine, so that the suction noise generated by the pressure waves is reduced, and the silencing and noise reduction effects are realized.

Description

Air inlet component for air filter assembly, air filter assembly and motorcycle

Technical Field

The application relates to the technical field of motorcycles, in particular to an air inlet assembly for an air filter assembly, the air filter assembly and a motorcycle.

Background

The motorcycle provides a power source through an engine, the engine, a throttle valve, an air filter assembly and other components are configured together to work, and the air filter assembly comprises an air inlet component, an air filter body and an air outlet component. During assembly, the air inlet assembly, the air filter body, the air outlet assembly and the engine are sequentially connected. When the engine is in an intake stroke, external fresh air sequentially passes through the air inlet assembly, the air filter body and the air outlet assembly and finally enters a cylinder of the engine.

The air filter assembly plays a role not only in filtering air but also in reducing intake noise in the intake system of the engine. In order to reduce the suction noise of the air filter assembly, various noise reduction structures are usually disposed inside the air filter assembly or a separate resonant cavity structure is disposed outside the air filter assembly. However, due to the structural design of the motorcycle itself, the need for the appearance of the motorcycle, and the internal volume of the air filter assembly, the suction noise cannot be further reduced by adding an internal noise reduction structure or an external resonant cavity structure.

Disclosure of Invention

Based on this, to the problem that traditional structure has can't further reduce the air suction noise of air filter assembly, provide an air intake assembly, air filter assembly and motorcycle that are used for air filter assembly.

The technical scheme is as follows:

in one aspect, the present application provides an air intake assembly for an air filter assembly, comprising:

one end of the air inlet pipeline is used for being connected with the air filter body;

the air inlet end comprises an end body and an inward extending pipeline, the end body is connected with the other end of the air inlet pipeline, one end of the inward extending pipeline is arranged on the end body, the other end of the inward extending pipeline extends into the air inlet pipeline, the end body is provided with an air inlet, and the end body is communicated with the inward extending pipeline through the air inlet.

In the air inlet component for the air filter assembly, external air enters from the air inlet and enters the air inlet pipeline through the inward extending pipeline, and finally further reaches the cylinder of the engine through the air filter body; according to the wave reflection theory, when the intake pressure wave excited by the valve end of the engine is transmitted towards one side of the air inlet assembly of the air filter assembly, when the pressure wave is transmitted to the position of the air inlet pipeline where the other end of the inward extending pipeline is located, because the cross section area of the air inlet pipeline generates sudden change due to the existence of the inward extending pipeline, the impedance mismatching of the pressure wave transmitted to the position is caused, and then a part of the pressure wave is reflected back to one side of the engine, so that the suction noise generated by the pressure wave is reduced, and the effects of noise reduction and noise reduction are realized.

The technical solution is further explained as follows:

in one embodiment, a gap is formed between the outer wall of the inner extension pipeline and the inner wall of the air inlet pipeline, so that a resonant cavity is formed between the inner extension pipeline and the air inlet pipeline, and a cavity opening of the resonant cavity faces to one side of the air inlet pipeline, which is far away from the end head body.

In one embodiment, the inner extension pipe extends along a first axis, and the length of the resonant cavity in the direction along the first axis is 1/4 of the wavelength corresponding to the noise frequency.

In one embodiment, the air inlet end head further comprises a clamping ring, the clamping ring is arranged on the end head body and surrounds the outer side of the inner extending pipeline, the inner wall of the clamping ring, the outer wall of the inner extending pipeline and the end head body are matched to form a clamping groove, and the other end of the air inlet pipeline can extend into the clamping groove, so that the air inlet pipeline is clamped and fixed with the air inlet end head through the clamping groove.

In one embodiment, the inner extension pipe has a first connection portion and a second connection portion, one end of the first connection portion is connected to the head body, the other end of the first connection portion is located in the air inlet pipe, and one end of the second connection portion is detachably connected to the first connection portion and located in the air inlet pipe.

In one embodiment, the opening of the air inlet is gradually increased in a direction away from the air inlet pipeline.

In one embodiment, the air inlet pipeline is provided with a straight part and a bent part, the bent part is connected with the straight part, and the bent part is positioned on one side of the air inlet pipeline facing the air filter body; the other end of the inward extending pipeline is positioned in the straight extending part.

In one embodiment, the air inlet assembly for the air filter assembly further comprises a corrugated pipeline, one end of the corrugated pipeline is connected with the bending part, and the other end of the corrugated pipeline is connected with the air filter body.

In another aspect, the present application further provides an air filter assembly, including:

the air filter comprises an air filter body, a filter body and a filter body, wherein the air filter body is provided with an air inlet and an air outlet;

the air inlet component for the air filter assembly according to any one of the above technical solutions, wherein the air inlet component is connected with the air filter body through the air inlet;

and one end of the air outlet assembly is connected with the air filter body through the air outlet, and the other end of the air outlet assembly is connected with an engine.

In addition, the application also provides a motorcycle, which comprises the air filter assembly in the technical scheme.

The air filter assembly and the motorcycle respectively comprise the air inlet component for the air filter assembly, external air enters from the air inlet and enters the air inlet pipeline through the inward extending pipeline, and finally further reaches the cylinder of the engine through the air filter body; according to the reflection theory of waves, when the intake pressure wave excited by the valve end of the engine is transmitted towards one side of the air inlet assembly of the air filter assembly, when the pressure wave is transmitted to the position of the air inlet pipeline where the other end of the inward extending pipeline is located, because the cross section area of the air inlet pipeline at the position generates sudden change due to the existence of the inward extending pipeline, the impedance mismatch of the pressure wave transmitted to the position is caused, and then a part of the pressure wave is reflected to one side of the engine, so that the suction noise generated by the pressure wave is reduced, and the effects of silencing and reducing noise are realized.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification.

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Furthermore, the figures are not drawn to scale with 1:1, and the relative sizes of the various elements in the figures are drawn for illustration only, and not necessarily to true scale.

FIG. 1 is a schematic structural view of an air filter assembly according to an embodiment of the present invention;

FIG. 2 is an exploded view of the structure of the air filter assembly of the embodiment of FIG. 1;

FIG. 3 is a side view block diagram of the air filter assembly of the embodiment of FIG. 1;

FIG. 4 is a cross-sectional view of the air filter assembly of the embodiment of FIG. 1;

FIG. 5 is an exploded view of the structure of the air inlet line and air inlet tip of FIG. 1;

FIG. 6 is a cross-sectional view of the air intake assembly of the air cleaner assembly of the embodiment of FIG. 1;

FIG. 7 is a graph of the suction audio spectrum of an air inlet assembly for an air filter assembly without the use of the present embodiment;

FIG. 8 is a graph of the suction audio spectrum of an air intake assembly for an air filter assembly incorporating the present embodiment;

FIG. 9 is a comparison of noise reduction effects of the two different configurations of FIGS. 7 and 8;

FIG. 10 is a graph comparing the effect of two different configurations of FIGS. 7 and 8 on the dynamic performance of an engine.

Reference is made to the accompanying drawings in which:

110. an air intake line; 111. a straight extension portion; 112. a bending section; 120. an air inlet end; 121. an end body; 1211. an air inlet; 122. extending the pipeline inwards; 123. a snap ring; 124. a resonant cavity; 125. a card slot; 130. a corrugated pipe; 200. an air filter body.

Detailed Description

Embodiments of the present invention are described in detail below with reference to the accompanying drawings:

in order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

Referring to fig. 1, the present embodiment provides an air inlet assembly for an air cleaner assembly, which is used to be connected to an air cleaner body 200 to supply external air into the air cleaner body 200, and further to be supplied into a cylinder of an engine through an air outlet assembly of the air cleaner body 200. Specifically, the method comprises the following steps:

the air intake assembly for the air cleaner assembly includes an air intake duct 110 and an air intake tip 120, the air intake tip 120 serving to introduce external air into the air intake duct 110, and the air intake duct 110 communicating with the air cleaner body 200.

Wherein:

as shown in fig. 1, one end of the air intake pipe 110 is used for connection with an air cleaner body 200.

The air intake duct 110 may communicate directly with the air cleaner body 200; the air filter body 200 can be communicated with other pipelines to realize indirect communication. For example, the air intake conduit 110 may communicate with the air cleaner body 200 through the bellows conduit 130.

As shown in fig. 2, the air inlet end head 120 includes an end head body 121 and an internal extending pipeline 122, the end head body 121 is connected to the other end of the air inlet pipeline 110, one end of the internal extending pipeline 122 is disposed on the end head body 121, the other end of the internal extending pipeline 122 extends into the air inlet pipeline 110, the end head body 121 is provided with an air inlet 1211, and the end head body 121 is communicated with the internal extending pipeline 122 through the air inlet 1211.

The air inlet 1211 allows external air to enter the air inlet head 120, and the inward pipe 122 further introduces the air into the air inlet pipe 110, thereby transporting the air toward the air cleaner body 200.

In the air intake component for the air filter assembly, external air enters from the air inlet 1211 and enters the air intake pipeline 110 through the inward extending pipeline 122, and finally further reaches the cylinder of the engine through the air filter body 200; according to the reflection theory of the wave, when the intake pressure wave excited by the valve end of the engine propagates towards the side of the intake component of the air filter assembly, when the pressure wave propagates to the position of the intake pipeline 110 where the other end of the inward extending pipeline 122 is located, because the cross-sectional area of the intake pipeline 110 at this position generates sudden change due to the existence of the inward extending pipeline 122, the impedance of the pressure wave propagating to this position is mismatched, and then a part of the pressure wave is reflected back to the side of the engine, so that the suction noise generated by the pressure wave is reduced, and the effects of silencing and reducing noise are realized.

In one embodiment, referring to fig. 6, an outer wall of the extending pipe 122 is spaced from an inner wall of the air inlet pipe 110, so that a resonant cavity 124 is formed between the extending pipe 122 and the air inlet pipe 110, and an opening of the resonant cavity 124 faces a side of the air inlet pipe 110 away from the tip body 121.

As shown in fig. 6, the extending pipe 122 extends into the air inlet pipe 110 and is sleeved in the air inlet pipe 110, and a space is provided between the extending pipe 122 and the air inlet pipe 110 to form an annular resonant cavity 124. As shown in fig. 6, a side of resonant cavity 124 facing head body 121 is closed as a bottom of resonant cavity 124, and a side of resonant cavity 124 facing away from head body 121 is an opening of resonant cavity 124, the opening being a side facing away from head body 121, that is, a side facing air filter body 200, through which pressure waves enter resonant cavity 124, thereby passing through resonant cavity 124 and pressure waves transmitted from the engine through air filter body 200.

In the view shown in fig. 6, the upper side of the resonant cavity 124 is closed, and the lower side of the resonant cavity 124 is open, which is the opening of the resonant cavity 124 and faces the lower side, so as to receive and neutralize the pressure wave transmitted from the engine.

In one embodiment, referring to fig. 6, the inner pipe 122 extends along the first axis, and the length of the resonant cavity 124 along the first axis is 1/4 of the wavelength corresponding to the noise frequency.

As shown in fig. 6, the inner extension pipe 122 is of a substantially straight pipe structure extending along the first axis, while the portion of the inlet pipe 110 corresponding to the inner extension pipe 122 is also of a straight pipe structure extending along the first axis, and an annular resonant cavity 124 extending along the first axis is formed between the inner extension pipe 122 and the inlet pipe 110. The length of the cavity 124 along the first axis is 1/4 of the wavelength corresponding to the frequency of the noise to be reduced to significantly reduce the noise at a particular frequency.

For example, to reduce the noise at a frequency of 1000Hz, which is very irritating to the human ear, the 1000Hz noise is significantly attenuated by adding a resonator 124 having a length along the first axis that is 1/4 of the wavelength corresponding to 1000 Hz.

In one embodiment, referring to fig. 6, the air inlet end head 120 further includes a clamp ring 123, the clamp ring 123 is disposed on the end head body 121 and surrounds the outer side of the internal extension pipe 122, an inner wall of the clamp ring 123, an outer wall of the internal extension pipe 122 and the end head body 121 cooperate to form a clamp groove 125, and the other end of the air inlet pipe 110 can extend into the clamp groove 125, so that the air inlet pipe 110 is clamped and fixed with the air inlet end head 120 through the clamp groove 125.

As shown in fig. 6, the clamp ring 123 surrounds the outer side of the internal extending pipe 122, and a space is provided between the inner wall of the clamp ring 123 and the outer wall of the internal extending pipe 122 to form a clamp groove 125. During assembly, the air inlet end head 120 is clamped to the other end of the air inlet pipeline 110 through the clamping groove 125, so that the air inlet end head 120 and the air inlet pipeline 110 are fixed.

As shown in fig. 6, the other end of the air inlet end 120 extends into the clamping groove 125, and the outer wall of the air inlet end 120 abuts against the inner wall of the clamping ring 123 to achieve clamping fixation.

Optionally, the inner extension pipe 122 is a circular pipe, the snap ring 123 is a circular ring, and the air inlet pipe 110 is a circular pipe, so that an annular resonant cavity 124 is formed between the inner extension pipe 122 and the air inlet pipe 110, and an annular snap groove 125 is formed between the inner extension pipe 122 and the snap ring 123.

In one embodiment, the snap ring 123 and the inwardly extending pipe 122 are both located on the same side of the head body 121, and the extension length of the snap ring 123 in the direction toward the air filter body 200 is smaller than that of the inwardly extending pipe 122 in the direction toward the air filter body 200, so that the structure is more compact on one hand, and the snap fit of the snap ring 123 and the air inlet pipe 110 is convenient to implement on the other hand.

In other embodiments, the intake tip 120 may also be threaded with the intake conduit 110.

For example, the outer surface of the tip body 121 is provided with a first thread to be screwed with the inner thread of the air inlet pipe 110, so as to fix the air inlet tip 120 and the air inlet pipe 110.

For another example, the air inlet end head 120 further includes a screw joint ring, the screw joint ring is disposed on the end head body 121, the screw joint ring is disposed around the outer side of the inner extending pipeline 122, a gap is formed between the screw joint ring and the inner extending pipeline 122 to form a matching groove, and the other end of the air inlet pipeline 110 extends into the matching groove, so that the external thread of the air inlet pipeline 110 is screwed with the screw joint ring, and the air inlet end head 120 and the air inlet pipeline 110 are fixed in the same manner.

In one embodiment, the tip body 121, the inner extension tube 122, and the snap ring 123 are a unitary structure.

In one embodiment, inner extension tube 122 has a first series connection with one end connected to tip body 121 and the other end located within air inlet tube 110, and a second series connection with one end detachably connectable to the first series connection and located within air inlet tube 110.

Considering that the length of the resonant cavity 124 along the first axis is related to the wavelength corresponding to the frequency of the noise to be eliminated, the length of the inner pipe 122 can be adjusted to eliminate the noise at different frequencies.

Specifically, the method comprises the following steps: first tandem connection portion and second tandem connection portion are equivalent to the different pipeline sections of interior pipeline 122 that stretch in, make interior pipeline 122 that stretches out can carry out the regulation of length, when the pipeline 122 is stretched in that needs are longer, then first tandem connection portion and second tandem connection portion concatenate and be in the same place, when the pipeline 122 is stretched in not needing to be longer, then demolish second tandem connection portion from first tandem connection portion, in order to reduce the length of stretching in pipeline 122, in order to satisfy the demand of making an uproar that falls of different frequency noise, the inlet line 110 of the different specification and size of adaptation also simultaneously, widen inlet end 120's application scope.

In one embodiment, referring to fig. 6, the opening of the air inlet 1211 gradually increases in a direction away from the air inlet pipe 110.

As shown in fig. 6, the opening of the air inlet 1211 is substantially flared to introduce the external air into the air inlet end 120 and further transport the external air toward the air filter body 200 through the air inlet pipe 110.

In one embodiment, please refer to fig. 5 and 6, the air intake duct 110 has a straight portion 111 and a curved portion 112, the curved portion 112 is connected to the straight portion 111, and the curved portion 112 is located on a side of the air intake duct 110 facing the air filter body 200; the other end of the inner extension tube 122 is located within the straight portion 111.

As shown in fig. 5, a portion of the air intake duct 110 is a straight portion 111 that extends in a straight line, and a portion thereof is a curved portion 112 that extends in a curved line, and the curved portion is located on a side of the air intake duct 110 near the air cleaner body 200. As shown in fig. 6, the other end of the inner extension tube 122 is located within the straight portion 111 such that the inner extension tube 122 extending into the inlet tube 110 is located within the straight portion 111 such that an annular resonant cavity 124 is formed between the inner extension tube 122 and the inlet tube 110.

In one embodiment, referring to fig. 1 and 6, the air intake assembly for the air filter assembly further includes a corrugated pipe 130, one end of the corrugated pipe 130 is connected to the bending portion 112, and the other end of the corrugated pipe 130 is connected to the air filter body 200.

The present embodiment also provides an air filter assembly, including:

the air filter comprises an air filter body 200, wherein the air filter body 200 is provided with an air inlet and an air outlet;

the air inlet assembly for the air filter assembly according to any one of the above embodiments, the air inlet assembly being connected to the air filter body 200 through an air inlet;

and one end of the air outlet assembly is connected with the air filter body 200 through an air outlet, and the other end of the air outlet assembly is used for being connected with an engine.

In addition, the embodiment also provides a motorcycle comprising the air filter assembly as described in the above embodiment.

The air filter assembly and the motorcycle both comprise the air inlet component for the air filter assembly, external air enters from the air inlet 1211 and enters the air inlet pipeline 110 through the inward extending pipeline 122, and finally further reaches the cylinder of the engine through the air filter body 200; according to the reflection theory of waves, when the intake pressure wave excited by the valve end of the engine propagates towards one side of the intake assembly of the air filter assembly, when the pressure wave propagates to the position of the intake pipeline 110 where the other end of the inward extending pipeline 122 is located, because the cross section area of the intake pipeline 110 at the position generates sudden change due to the existence of the inward extending pipeline 122, the impedance of the pressure wave propagating to the position is mismatched, and then a part of the pressure wave is reflected back to one side of the engine, so that the suction noise generated by the pressure wave is reduced, and the effects of sound attenuation and noise reduction are realized.

Because the mode of adding a sound attenuation structure on the air filter body 200 or arranging an independent resonant cavity 124 structure outside is not adopted, the effect of effectively reducing the suction noise is realized on the premise of not changing the structure of the air filter assembly and the overall appearance of the motorcycle.

As can be seen from fig. 7 to 9, compared with an air filter assembly without the air intake component provided in the present application, the air filter assembly of the present application has significantly reduced sound pressure of suction sound and total sound pressure of suction sound in a frequency band with high noise; meanwhile, as can be seen from fig. 10, after the air filter assembly of the air intake assembly provided by the present application is adopted, the dynamic performance of the engine is not substantially affected.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be interconnected within two elements or in a relationship where two elements interact with each other unless otherwise specifically limited. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "above," and "over" a second feature may be directly on or obliquely above the second feature, or simply mean that the first feature is at a higher level than the second feature. A first feature "under," "beneath," and "under" a second feature may be directly under or obliquely under the second feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. As used herein, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are for purposes of illustration only and do not denote a single embodiment.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is specific and detailed, but not to be understood as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent should be subject to the appended claims.

Claims (10)

1. An air intake assembly for an air filter assembly, comprising:

one end of the air inlet pipeline is used for being connected with the air filter body;

the air inlet end comprises an end body and an inner extending pipeline, the end body is connected with the other end of the air inlet pipeline, one end of the inner extending pipeline is arranged on the end body, the other end of the inner extending pipeline extends into the air inlet pipeline, the end body is provided with an air inlet, and the end body is communicated with the inner extending pipeline through the air inlet.

2. The air inlet assembly for the air filter assembly according to claim 1, wherein a space is formed between the outer wall of the inner extension pipe and the inner wall of the air inlet pipe, so that a resonant cavity is formed between the inner extension pipe and the air inlet pipe, and a cavity opening of the resonant cavity faces to one side of the air inlet pipe, which is far away from the end head body.

3. The air intake assembly for an air cleaner assembly according to claim 2, wherein the inwardly extending pipe extends along a first axis, and a length of the resonant cavity in a direction along the first axis is 1/4 of a wavelength corresponding to a noise frequency.

4. The air inlet assembly for the air filter assembly according to claim 1, wherein the air inlet end further comprises a clamping ring, the clamping ring is arranged on the end body and surrounds the outer side of the inward extending pipeline, the inner wall of the clamping ring, the outer wall of the inward extending pipeline and the end body are matched to form a clamping groove, and the other end of the air inlet pipeline can extend into the clamping groove, so that the air inlet pipeline is clamped and fixed with the air inlet end through the clamping groove.

5. The air intake assembly for an air filter assembly according to claim 1, wherein the inner extension pipe has a first series connection portion and a second series connection portion, one end of the first series connection portion is connected to the head body, the other end of the first series connection portion is located in the air intake pipe, and one end of the second series connection portion is detachably connected to the first series connection portion and located in the air intake pipe.

6. The air intake assembly for an air cleaner assembly according to any one of claims 1 to 5, wherein the opening of the air intake is gradually increased in a direction away from the air intake pipe.

7. The air intake assembly for an air cleaner assembly according to claim 6, wherein the air intake duct has a straight portion and a curved portion, the curved portion being connected to the straight portion, the curved portion being located on a side of the air intake duct that faces the air cleaner body; the other end of the inward extending pipeline is positioned in the straight extending part.

8. The air intake assembly for an air filter assembly according to claim 7, further comprising a corrugated pipe, one end of the corrugated pipe being connected to the bent portion, and the other end of the corrugated pipe being connected to the air filter body.

9. An air filter assembly, comprising:

the air filter comprises an air filter body, a filter body and a filter body, wherein the air filter body is provided with an air inlet and an air outlet;

an air inlet assembly for an air filter assembly as claimed in any one of claims 1 to 8, said air inlet assembly being connected to said air filter body via said air inlet;

and one end of the air outlet assembly is connected with the air filter body through the air outlet, and the other end of the air outlet assembly is connected with an engine.

10. A motorcycle comprising the air filter assembly of claim 9.

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