Air filter device and motorcycle

Abstract

The present application relates to an air filter device and a motorcycle. The air filter device includes: a shell assembly, wherein the shell assembly defines a filter chamber; an isolator, wherein the isolator is connected to the inner wall of the filter chamber, and wherein the isolator divides the filter chamber into an inner chamber, a first pressure-stabilizing chamber, and a second pressure-stabilizing chamber, which are not connected to each other; a first air outlet pipe and a second air outlet pipe, wherein the first air outlet pipe and the second air outlet pipe are respectively connected to the inner chamber; a first pressure-stabilizing member and a second pressure-stabilizing member, wherein the first pressure-stabilizing chamber is connected to the first air outlet pipe via the first pressure-stabilizing member; and the second pressure-stabilizing chamber is connected to the second air outlet pipe via the second pressure-stabilizing member. Since the isolator is inside the shell assembly, the integration is high, and the internal space of the shell assembly is fully utilized, which is conducive to improving the compactness of the structure and ensuring the overall layout and appearance integrity of the motorcycle. In addition, there is no need to add additional parts, which is conducive to controlling production costs.

Description

Technical Field

[0001] The present application relates to the technical field of motorcycle air filters, and in particular to an air filter device and a motorcycle. Background Art

[0002] The engine components of two-wheeled motorcycles and other vehicles primarily consist of the engine and intake system, specifically the engine intake manifold, throttle body, air filter outlet pipe, air filter body, filter element, and air filter intake manifold. During the engine's intake stroke, outside air enters the cylinder through the air filter intake manifold. The engine intake system requires low intake resistance, smooth air flow, and minimal intake noise. The air filter not only filters air but also plays a crucial role in ensuring engine performance and reducing intake noise.

[0003] For multi-cylinder engines, since the air filter outlet pipes corresponding to different cylinders are all located in the same clean air filter chamber, and there is a sequence in the intake time of the two cylinders, the two air filter outlet pipes will affect each other's intake efficiency due to the existence of pressure waves, which will affect the durability of the engine. Traditional technology uses a separately designed independent pressure stabilizing chamber component, which is installed and fastened to the outlet pipe. However, this solution requires a separate pressure stabilizing chamber component for each cylinder, which will significantly increase the number of parts and the production cost of the entire vehicle, which does not meet the production goal of cost reduction. At the same time, the independent pressure stabilizing chamber solution requires additional vehicle space, which will greatly inconvenience the overall layout of the vehicle. Summary of the Invention

[0004] Based on this, it is necessary to provide an air filter device and a motorcycle, which can effectively reduce production costs and improve the structural compactness of the air filter.

[0005] The technical solution is as follows: an air filter device, comprising: a shell assembly, wherein the shell assembly is provided with a filter chamber; an isolator, wherein the isolator is connected to the inner wall of the filter chamber, and the isolator divides the filter chamber into an inner chamber, a first pressure-stabilizing chamber, and a second pressure-stabilizing chamber that are not connected to each other; a first air outlet pipe and a second air outlet pipe, wherein the first air outlet pipe and the second air outlet pipe are respectively connected to the inner chamber; a first pressure stabilizer and a second pressure stabilizer, wherein the first pressure stabilizer is connected between the cavity wall of the first pressure-stabilizing chamber and the tube wall of the first air outlet pipe, and the first pressure-stabilizing chamber is connected to the first air outlet pipe through the first pressure stabilizer; the second pressure stabilizer is connected between the cavity wall of the second pressure-stabilizing chamber and the tube wall of the second air outlet pipe, and the second pressure-stabilizing chamber is connected to the second air outlet pipe through the second pressure stabilizer.

[0006] In the above-mentioned air filter device, during the installation process, the isolating element is installed in the shell assembly, isolating the first pressure-stabilizing chamber and the second pressure-stabilizing chamber that are not connected to the inner cavity from the isolating chamber. After the first outlet pipe and the second outlet pipe are connected to the shell assembly, the inner cavity can discharge air to the two cylinders respectively, and the first pressure-stabilizing element is installed between the first pressure-stabilizing chamber and the pipe wall of the first outlet pipe, and the second pressure-stabilizing element is installed between the pipe wall of the second pressure-stabilizing chamber and the pipe wall of the second outlet pipe. During operation, the first pressure-stabilizing chamber and the second pressure-stabilizing chamber can alleviate the pressure fluctuations on the first outlet pipe and the second outlet pipe, reduce the degree of mutual influence between the cylinders during the intake process, thereby improving the intake unevenness of the two cylinders and making the work performance of the two cylinders closer. Since the isolating element is inside the shell assembly, it has a high degree of integration and fully utilizes the internal space of the shell assembly, which is conducive to improving the compactness of the structure and ensuring the overall layout and appearance integrity of the motorcycle. In addition, there is no need to add parts, which is conducive to controlling production costs.

[0007] In one embodiment, the shell assembly includes an upper shell and a lower shell, the upper shell and the lower shell are detachably connected and together form the filter chamber, the isolation member is connected to the inner wall of the upper shell and / or the lower shell, the first air outlet pipe is connected to the upper shell or the lower shell, the second air outlet pipe is connected to the upper shell or the lower shell, the first pressure stabilizer is connected to the upper shell or the lower shell, and the second pressure stabilizer is connected to the upper shell or the lower shell.

[0008] In one embodiment, the isolation member includes a first partition and a second partition, the first partition is connected to the inner wall of the lower shell, the second partition is respectively connected to the first partition and the inner wall of the lower shell, and the upper shell is provided with a mating groove, the first partition and the second partition are both sealed with the mating groove, and the upper shell, the lower shell, the first partition and the second partition together enclose the first pressure stabilizing chamber and the second pressure stabilizing chamber.

[0009] In one embodiment, the lower shell is provided with a first mounting hole and a second mounting hole respectively connected to the inner cavity, the first air outlet pipe is connected to the lower shell through the first mounting hole, and the second air outlet pipe is connected to the lower shell through the second mounting hole.

[0010] In one embodiment, a third mounting hole is provided on the bottom wall of the first pressure-stabilizing chamber, a fourth mounting hole is provided on the bottom wall of the second pressure-stabilizing chamber, the first pressure-stabilizing component and the second pressure-stabilizing component are both located outside the shell assembly, the first pressure-stabilizing component is connected to the cavity wall of the first pressure-stabilizing chamber through the third mounting hole, and the second pressure-stabilizing component is connected to the cavity wall of the second pressure-stabilizing chamber through the fourth mounting hole.

[0011] In one embodiment, the first pressure stabilizer includes a first connecting tube, and the second pressure stabilizer includes a second connecting tube. The opposite ends of the first connecting tube are respectively connected to the first pressure stabilizing chamber and the first air outlet pipe, and the opposite ends of the second connecting tube are respectively connected to the second pressure stabilizing chamber and the second air outlet pipe.

[0012] In one embodiment, a first connecting base is provided on the tube wall of the first air outlet pipe, the first connecting base is communicated with the first air outlet pipe, and the first pressure stabilizer is connected to the first connecting base; a second connecting base is provided on the tube wall of the second air outlet pipe, the second connecting base is communicated with the second air outlet pipe, and the second pressure stabilizer is connected to the second connecting base.

[0013] In one embodiment, the first air outlet pipe is further provided with a first fastener, and the first pressure stabilizer is fastened to the first connecting base via the first fastener; the second air outlet pipe is further provided with a second fastener, and the second pressure stabilizer is fastened to the second connecting base via the second fastener.

[0014] In one embodiment, the isolation member also separates the filter cavity into a third pressure-stabilizing cavity, and the third pressure-stabilizing cavity is not connected to the first pressure-stabilizing cavity, the second pressure-stabilizing cavity, and the inner cavity. The air filter device also includes a third air outlet pipe and a third pressure-stabilizing member. The third air outlet pipe is connected to the inner cavity, and the third pressure-stabilizing member is connected between the cavity wall of the third pressure-stabilizing cavity and the tube wall of the third air outlet pipe. The third pressure-stabilizing cavity is connected to the third air outlet pipe through the third pressure-stabilizing member.

[0015] A motorcycle comprises the air filter device described in any one of the above.

[0016] In the above-mentioned motorcycle, during the installation process, the isolating element is installed in the shell assembly, isolating the first pressure-stabilizing chamber and the second pressure-stabilizing chamber that are not connected to the inner cavity from the isolating chamber. After the first air outlet pipe and the second air outlet pipe are connected to the shell assembly, the inner cavity can discharge air to the two cylinders respectively, and the first pressure-stabilizing element is installed between the first pressure-stabilizing chamber and the pipe wall of the first air outlet pipe, and the second pressure-stabilizing element is installed between the pipe wall of the second pressure-stabilizing chamber and the pipe wall of the second air outlet pipe. During operation, the first pressure-stabilizing chamber and the second pressure-stabilizing chamber can alleviate the pressure fluctuations on the first air outlet pipe and the second air outlet pipe, reduce the degree of mutual influence between the cylinders during the intake process, thereby improving the intake unevenness of the two cylinders and making the work performance of the two cylinders closer. Since the isolating element is inside the shell assembly, it has a high degree of integration and fully utilizes the internal space of the shell assembly, which is conducive to improving the compactness of the structure and ensuring the overall layout and appearance integrity of the motorcycle. In addition, there is no need to add parts, which is conducive to controlling production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings that constitute a part of this application are used to provide further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute improper limitations on this application.

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0019] Figure 1 Schematic diagram of the overall structure of the air filter device described in one embodiment.

[0020] Figure 2 Schematic diagram of the structure inside the lower shell described in one embodiment.

[0021] Figure 3 Schematic diagram of the structure of the upper shell described in one embodiment.

[0022] Figure 4 Schematic diagram of the installation positions of the first voltage stabilizer and the second voltage stabilizer described in one embodiment.

[0023] Figure 5 Schematic diagram of the structure of the first air outlet pipe and the second air outlet pipe in one embodiment.

[0024] Description of reference numerals:

[0025] 100. Air filter device; 110. Shell assembly; 111. Filter cavity; 112. Upper shell; 113. Lower shell; 1131. First mounting hole; 1132. Second mounting hole; 114. Inner cavity; 115. First pressure-stabilizing cavity; 1151. Third mounting hole; 116. Second pressure-stabilizing cavity; 1161. Fourth mounting hole; 117. Fitting groove; 120. Isolator; 121. First partition; 122. Second partition; 130. First air outlet pipe; 131. First connecting base; 132. First fastener; 140. Second air outlet pipe; 141. Second connecting base; 142. Second fastener; 150. First pressure-stabilizing member; 160. Second pressure-stabilizing member; 170. Air filter cover; 171. Filter element; 172. Inlet pipe. DETAILED DESCRIPTION

[0026] 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.

[0027] In the description of the present application, it should be understood that 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" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do 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 should not be understood as a limitation on the present application.

[0028] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. Throughout the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0029] In this application, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0030] In this application, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is "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 "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.

[0031] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0032] See also Figure 1 , Figure 1 The overall structural diagram of an air filter device 100 described in one embodiment of the present application is shown. An embodiment of the present application provides an air filter device 100, comprising: a housing assembly 110, an isolator 120, a first air outlet pipe 130, a second air outlet pipe 140, a first pressure stabilizer 150, and a second pressure stabilizer 160. The housing assembly 110 defines a filter chamber 111. The isolator 120 is connected to the inner wall of the filter chamber 111. The isolator 120 divides the filter chamber 111 into an inner chamber 114, a first pressure-stabilizing chamber 115, and a second pressure-stabilizing chamber 116, which are not connected to each other. The first air outlet pipe 130 and the second air outlet pipe 140 are respectively connected to the inner chamber 114. The first pressure stabilizer 150 is connected between the wall of the first pressure-stabilizing chamber 115 and the wall of the first air outlet pipe 130. The first pressure-stabilizing chamber 115 is connected to the first air outlet pipe 130 via the first pressure stabilizer 150. The second pressure stabilizing member 160 is connected between the cavity wall of the second pressure stabilizing chamber 116 and the tube wall of the second gas outlet pipe 140 . The second pressure stabilizing chamber 116 is in communication with the second gas outlet pipe 140 through the second pressure stabilizing member 160 .

[0033] During the installation of the above-mentioned air filter device 100, the isolation member 120 is installed in the shell assembly 110, and the first pressure-stabilizing chamber 115 and the second pressure-stabilizing chamber 116 that are not connected to the inner chamber 114 are isolated from the isolation chamber. After the first air outlet pipe 130 and the second air outlet pipe 140 are connected to the shell assembly 110, the inner chamber 114 can discharge air to the two cylinders respectively, and the first pressure-stabilizing member 150 is installed between the first pressure-stabilizing chamber 115 and the pipe wall of the first air outlet pipe 130, and the second pressure-stabilizing member 160 is installed between the pipe wall of the second pressure-stabilizing chamber 116 and the second air outlet pipe 140. During operation, the first pressure-stabilizing chamber 115 and the second pressure-stabilizing chamber 116 can alleviate the pressure fluctuations on the first air outlet pipe 130 and the second air outlet pipe 140, reduce the degree of mutual influence between the cylinders during the intake process, thereby improving the intake unevenness of the two cylinders, and making the work performance of the two cylinders become closer. Because the isolator 120 is located within the housing assembly 110, it boasts a high level of integration, fully utilizing the internal space of the housing assembly 110. This improves structural compactness and ensures the integrity of the motorcycle's overall layout and appearance. Furthermore, the absence of additional components helps control production costs. Furthermore, this pressure-stabilizing chamber solution also functions as a Helmholtz resonator, effectively reducing suction noise within a specific frequency range.

[0034] See also Figure 2 and Figure 3 , Figure 2 Schematic diagram of the structure inside the lower housing 113 described in one embodiment of the present application is shown; Figure 3 A structural schematic diagram of the upper shell 112 described in one embodiment of the present application is shown; in one embodiment, the shell assembly 110 includes an upper shell 112 and a lower shell 113. The upper shell 112 and the lower shell 113 are detachably connected and together form a filter chamber 111, the isolation member 120 is connected to the inner wall of the upper shell 112 and / or the lower shell 113, the first air outlet pipe 130 is connected to the upper shell 112 or the lower shell 113, the second air outlet pipe 140 is connected to the upper shell 112 or the lower shell 113, the first pressure stabilizer 150 is connected to the upper shell 112 or the lower shell 113, and the second pressure stabilizer 160 is connected to the upper shell 112 or the lower shell 113. In this way, assembly is convenient, production cost is low, and maintenance is simple. When the first pressure stabilizing chamber 115 and the second pressure stabilizing chamber 116 need maintenance, the upper shell 112 and the lower shell 113 can be disassembled, which is conducive to improving maintenance convenience.

[0035] It should be noted here that the connection between the isolation member 120 and the inner wall of the upper shell 112 and / or the lower shell 113 should be understood as the isolation member 120 being set only on the upper shell 112, or only on the lower shell 113, or the isolation member 120 being connected to both the upper shell 112 and the lower shell 113.

[0036] Optionally, the isolation member 120 may be a plate structure, a cavity structure, a shell structure, a cylinder structure or other types of structures.

[0037] In one embodiment, see Figure 1 and Figure 2 The isolation member 120 includes a first partition 121 and a second partition 122. The first partition 121 is connected to the inner wall of the lower shell 113, and the second partition 122 is connected to the first partition 121 and the inner wall of the lower shell 113 respectively, and the upper shell 112 is provided with a matching groove 117, and the first partition 121 and the second partition 122 are both sealed with the matching groove 117. The upper shell 112, the lower shell 113, the first partition 121 and the second partition 122 together enclose the first pressure-stabilizing chamber 115 and the second pressure-stabilizing chamber 116. For example, the first partition 121 and the second partition 122 are vertically arranged to form a "T" shape, and after being connected to the lower shell 113, two independent rectangular first pressure-stabilizing chambers 115 and second pressure-stabilizing chambers 116 are formed. The structure is simple, and installation and processing are convenient. There is no need to remake the casting mold, which is conducive to reducing production costs.

[0038] In other embodiments, the shapes of the first pressure-stabilizing chamber 115 and the second pressure-stabilizing chamber 116 may also be circular, triangular, regular polygonal or other irregular shapes, which are not specifically limited here.

[0039] See also Figure 4 , Figure 4 A schematic diagram illustrating the installation positions of the first pressure stabilizer 150 and the second pressure stabilizer 160 described in one embodiment of the present application is shown. In one embodiment, the lower housing 113 defines a first mounting hole 1131 and a second mounting hole 1132, respectively communicating with the inner cavity 114. The first air outlet pipe 130 is connected to the lower housing 113 through the first mounting hole 1131, and the second air outlet pipe 140 is connected to the lower housing 113 through the second mounting hole 1132. This facilitates the installation of the first and second air outlet pipes 130, 140.

[0040] Specifically, the first air outlet pipe 130 extends into the inner cavity 114 through the first mounting hole 1131, with the outer wall of the first air outlet pipe 130 sealingly mating with the inner wall of the first mounting hole 1131. The second air outlet pipe 140 extends into the inner cavity 114 through the second mounting hole 1132, with the outer wall of the second air outlet pipe 140 sealingly mating with the inner wall of the second mounting hole 1132. Optionally, the sealing method may include providing a raised edge, a sealing ring, a sealing strip, or other sealing material. Thus, air leakage between the air outlet pipe and the lower housing 113 can be prevented.

[0041] In one embodiment, see Figure 2The bottom wall of the first pressure-stabilizing chamber 115 is provided with a third mounting hole 1151, and the bottom wall of the second pressure-stabilizing chamber 116 is provided with a fourth mounting hole 1161. Both the first pressure-stabilizing component 150 and the second pressure-stabilizing component 160 are located outside the housing assembly 110. The first pressure-stabilizing component 150 is connected to the wall of the first pressure-stabilizing chamber 115 via the third mounting hole 1151, and the second pressure-stabilizing component 160 is connected to the wall of the second pressure-stabilizing chamber 116 via the fourth mounting hole 1161. Therefore, the use of the third mounting hole 1151 and the fourth mounting hole 1161 facilitates installation and facilitates simple modification of the existing air filter, thereby reducing production costs.

[0042] In one embodiment, see Figure 2 The bottom wall of the first pressure stabilizing chamber 115 is provided with an arcuate transition surface. The bottom wall of the second pressure stabilizing chamber 116 is provided with an arcuate transition surface. Therefore, the transition effect of the arcuate transition surface is conducive to reducing the friction between the high-pressure gas and the chamber wall, thereby reducing noise.

[0043] Optionally, the first pressure stabilizer 150 may be provided in a tank structure, a tank structure, a pipe structure, a pump structure, a piston structure or other structural types.

[0044] In one embodiment, see Figure 1 and Figure 4 The first pressure stabilizer 150 includes a first connecting pipe, and the second pressure stabilizer 160 includes a second connecting pipe. The opposite ends of the first connecting pipe are respectively connected to the first pressure-stabilizing chamber 115 and the first air outlet pipe 130, and the opposite ends of the second connecting pipe are respectively connected to the second pressure-stabilizing chamber 116 and the second air outlet pipe 140. In this way, the two pressure-stabilizing chambers and the two air outlet pipes are connected in the housing assembly 110 via two connecting pipes. The installation method is simple and reliable, and effectively improves the intake uniformity of the two cylinders of the two-cylinder engine, making the power performance of the two cylinders more similar, which is beneficial to improving the durability of the engine. This embodiment only provides a specific implementation of the first pressure stabilizer 150 and the second pressure stabilizer 160, but is not limited to this.

[0045] In one embodiment, see Figure 1 and Figure 5 , Figure 5A schematic diagram of the structure of the first air outlet pipe and the second air outlet pipe described in one embodiment of the present application is shown. A first connecting base 131 is provided on the tube wall of the first air outlet pipe 130, the first connecting base 131 is connected to the first air outlet pipe 130, and the first pressure stabilizer 150 is connected to the first connecting base 131. A second connecting base 141 is provided on the tube wall of the second air outlet pipe 140, the second connecting base is connected to the second air outlet pipe 140, and the second pressure stabilizer 160 is connected to the second connecting base 141. In this way, the installation and removal of the first pressure stabilizer 150 and the second pressure stabilizer 160 on the first air outlet pipe 130 and the second air outlet pipe 140, respectively, are facilitated, thereby improving the convenience of assembly and disassembly.

[0046] Optionally, the first connection base 131 and the first pressure stabilizer 150 may be connected by bolts, threads, plugs, clamps, adhesives, rivets, pins, or other connection methods. The second connection base 141 and the second pressure stabilizer 160 may be connected by bolts, threads, plugs, clamps, adhesives, rivets, pins, or other connection methods.

[0047] In one embodiment, see Figure 1 , the first air outlet pipe 130 is also provided with a first fastener 132, and the first pressure stabilizer 150 is fastened to the first connecting base 131 through the first fastener 132. The second air outlet pipe 140 is also provided with a second fastener 142, and the second pressure stabilizer 160 is fastened to the second connecting base 141 through the second fastener 142. For example, the first fastener 132 and the second fastener 142 are both retaining springs. In this way, after the first pressure stabilizer 150 and the second pressure stabilizer 160 are respectively connected to the first connecting base 131 and the second connecting base 141, they are fastened by retaining springs, which can prevent the first pressure stabilizer 150 from being loosened due to shock waves during operation, thereby improving working reliability. This embodiment only provides a specific setting method for the first pressure stabilizer 150 and the first connecting base 131, but is not limited to this.

[0048] In other embodiments, the specific number of pressure stabilizing chambers can be set according to the number of engine cylinders. Specifically, different numbers of pressure stabilizing chambers can be formed by changing the structure of the partition, so as to be suitable for the air filter and intake of a multi-cylinder engine.

[0049] For example, the isolation member 120 also separates the filter chamber 111 into a third pressure-stabilizing chamber (not shown in the figure), and the third pressure-stabilizing chamber is not connected to the first pressure-stabilizing chamber 115, the second pressure-stabilizing chamber 116, and the inner chamber 114. The air filter device 100 also includes a third air outlet pipe and a third pressure-stabilizing member. The third air outlet pipe is connected to the inner chamber 114, and the third pressure-stabilizing member is connected between the cavity wall of the third pressure-stabilizing chamber and the tube wall of the third air outlet pipe. The third pressure-stabilizing chamber is connected to the third air outlet pipe through the third pressure-stabilizing member.

[0050] In one embodiment, see Figure 1and Figure 3 The upper housing 112 defines an air inlet. The housing assembly 110 further includes an air filter cover 170, which covers the air inlet. An air inlet pipe 172 is connected to the air filter cover 170, and a filter element 171 is provided on the wall of the air inlet. As a result, air enters the inner cavity 114 through the air inlet pipe 172, where it is filtered of impurities by the filter element 171, and then discharged through the first and second air outlet pipes 130 and 140.

[0051] In one embodiment, a motorcycle (not shown) includes any one of the above-mentioned air filter devices 100 .

[0052] In the above-mentioned motorcycle, during the installation process, the isolation member 120 is installed in the shell assembly 110, and the first pressure-stabilizing chamber 115 and the second pressure-stabilizing chamber 116 that are not connected to the inner chamber 114 are isolated from the isolation chamber. After the first air outlet pipe 130 and the second air outlet pipe 140 are connected to the shell assembly 110, the inner chamber 114 can discharge air to the two cylinders respectively, and the first pressure-stabilizing member 150 is installed between the first pressure-stabilizing chamber 115 and the pipe wall of the first air outlet pipe 130, and the second pressure-stabilizing member 160 is installed between the pipe wall of the second pressure-stabilizing chamber 116 and the second air outlet pipe 140. During operation, the first pressure-stabilizing chamber 115 and the second pressure-stabilizing chamber 116 can alleviate the pressure fluctuations on the first air outlet pipe 130 and the second air outlet pipe 140, reduce the degree of mutual influence between the cylinders during the intake process, thereby improving the intake unevenness of the two cylinders, and making the work performance of the two cylinders become closer. Because the isolator 120 is located within the housing assembly 110, it boasts a high level of integration, fully utilizing the internal space of the housing assembly 110. This improves structural compactness and ensures the integrity of the motorcycle's overall layout and appearance. Furthermore, the absence of additional components helps control production costs. Furthermore, this pressure-stabilizing chamber solution also functions as a Helmholtz resonator, effectively reducing suction noise within a specific frequency range.

[0053] 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.

[0054] 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. An air filter device, characterized in that: The air filter device comprises: A housing assembly, wherein the housing assembly is provided with a filter cavity; an isolator connected to the inner wall of the filter cavity, the isolator dividing the filter cavity into an inner cavity, a first pressure stabilizing cavity, and a second pressure stabilizing cavity that are not connected to each other; a first air outlet pipe and a second air outlet pipe, wherein the first air outlet pipe and the second air outlet pipe are respectively connected to the inner cavity; A first pressure stabilizer and a second pressure stabilizer, the first pressure stabilizer is connected between the cavity wall of the first pressure-stabilizing chamber and the tube wall of the first air outlet pipe, and the first pressure-stabilizing chamber is communicated with the first air outlet pipe through the first pressure stabilizer; the second pressure stabilizer is connected between the cavity wall of the second pressure-stabilizing chamber and the tube wall of the second air outlet pipe, and the second pressure-stabilizing chamber is communicated with the second air outlet pipe through the second pressure stabilizer.

2. The air filter device according to claim 1, characterized in that The shell assembly includes an upper shell and a lower shell, the upper shell and the lower shell are detachably connected and together form the filter chamber, the isolation member is connected to the inner wall of the upper shell and / or the lower shell, the first air outlet pipe is connected to the upper shell or the lower shell, the second air outlet pipe is connected to the upper shell or the lower shell, the first pressure stabilizer is connected to the upper shell or the lower shell, and the second pressure stabilizer is connected to the upper shell or the lower shell.

3. The air filter device according to claim 2, characterized in that: The isolation member includes a first partition and a second partition, the first partition is connected to the inner wall of the lower shell, the second partition is respectively connected to the first partition and the inner wall of the lower shell, and the upper shell is provided with a matching groove, the first partition and the second partition are both sealed with the matching groove, and the upper shell, the lower shell, the first partition and the second partition together enclose the first pressure-stabilizing chamber and the second pressure-stabilizing chamber.

4. The air filter device according to claim 3, characterized in that: The lower shell is provided with a first mounting hole and a second mounting hole respectively connected to the inner cavity. The first air outlet pipe is connected to the lower shell through the first mounting hole, and the second air outlet pipe is connected to the lower shell through the second mounting hole.

5. The air filter device according to claim 1, characterized in that: A third mounting hole is provided on the bottom wall of the first pressure-stabilizing chamber, and a fourth mounting hole is provided on the bottom wall of the second pressure-stabilizing chamber. The first pressure-stabilizing component and the second pressure-stabilizing component are both located outside the shell assembly. The first pressure-stabilizing component is connected to the cavity wall of the first pressure-stabilizing chamber through the third mounting hole, and the second pressure-stabilizing component is connected to the cavity wall of the second pressure-stabilizing chamber through the fourth mounting hole.

6. The air filter device according to claim 1, characterized in that The first pressure stabilizer includes a first connecting pipe, and the second pressure stabilizer includes a second connecting pipe. The opposite ends of the first connecting pipe are respectively connected to the first pressure stabilizing chamber and the first air outlet pipe, and the opposite ends of the second connecting pipe are respectively connected to the second pressure stabilizing chamber and the second air outlet pipe.

7. The air filter device according to claim 6, characterized in that: A first connecting base is provided on the tube wall of the first air outlet pipe, the first connecting base is communicated with the first air outlet pipe, and the first pressure stabilizer is connected to the first connecting base; a second connecting base is provided on the tube wall of the second air outlet pipe, the second connecting base is communicated with the second air outlet pipe, and the second pressure stabilizer is connected to the second connecting base.

8. The air filter device according to claim 7, characterized in that: The first air outlet pipe is further provided with a first fastener, and the first pressure stabilizer is fastened to the first connecting base via the first fastener; the second air outlet pipe is further provided with a second fastener, and the second pressure stabilizer is fastened to the second connecting base via the second fastener.

9. The air filter device according to any one of claims 1 to 8, characterized in that: The isolation member also separates the filter cavity into a third pressure-stabilizing cavity, and the third pressure-stabilizing cavity is not connected to the first pressure-stabilizing cavity, the second pressure-stabilizing cavity, and the inner cavity. The air filter device also includes a third air outlet pipe and a third pressure-stabilizing member. The third air outlet pipe is connected to the inner cavity, and the third pressure-stabilizing member is connected between the cavity wall of the third pressure-stabilizing cavity and the tube wall of the third air outlet pipe. The third pressure-stabilizing cavity is connected to the third air outlet pipe through the third pressure-stabilizing member.

10. A motorcycle, characterized in that: The motorcycle comprises the air filter device according to any one of claims 1 to 9.

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